Via connector

Abstract

The utility model relates to the technical field of via hole connector, specifically disclose via hole connector, including casing, hole column, silica gel sleeve and screw cap, be equipped with the wire through -hole on the casing, the both ends of wire through -hole are equipped with first opening and second opening respectively, the port department of first opening and second opening is equipped with respectively for the first annular groove and second annular groove of location, the hole column is columnar, and the outer circumferential surface middle part protrudes and has annular limit board, the hole column is inserted from first opening along wire through -hole axial direction, the upper end of hole column is equipped with external thread, and the screw cap is screwed on the external thread of hole column, the inside of hole column is equipped with wire passageway along the axial direction, the cross section of silica gel sleeve is T -shaped, including the limit head and insertion rod department of connection, and the silica gel sleeve is inserted from second opening along wire through -hole axial direction, and its limit head is in butt joint in second annular groove. The utility model has realized firm assembly, reliable sealing, cable protection and the effect of convenient dismounting, has promoted product use stability and practicality.

Description

Technical Field

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

[0002] Through-hole connectors are critical components used in electronic and communication equipment to allow cables to pass through the device housing and achieve fixation and sealing. They are widely used in scenarios requiring cable penetration, and their performance directly affects the assembly stability, sealing protection effect, and cable lifespan. Currently, through-hole connectors on the market generally suffer from unreasonable assembly structure design. Some products use a single snap-fit ​​or threaded connection for fixation, which is prone to axial loosening, affecting the stability of use. The sealing structure often uses simple gaskets or sleeves, resulting in insufficient sealing fit, making them susceptible to the intrusion of environmental dust and moisture, leading to moisture damage to internal components. At the same time, there is a lack of effective protection at the contact point between the cable and the inner wall of the connector. Over long-term use, friction can easily cause wear on the cable insulation layer, leading to safety hazards. In addition, some products are cumbersome to disassemble and assemble, which is not conducive to later maintenance. Utility Model Content

[0003] In view of the shortcomings of the prior art, the through-hole connector provided by this utility model achieves the effects of firm assembly, reliable sealing, cable protection and convenient disassembly and assembly, improves the stability and practicality of product use, and solves the problems of loose assembly, poor sealing, easy cable wear and inconvenient disassembly and assembly of through-hole connectors.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A through-hole connector includes a housing, a post, a silicone sleeve, and a nut. The housing has a through-hole for wires, with a first opening and a second opening at each end. The first and second openings have a first annular groove and a second annular groove for limiting movement, respectively. The inner side of the second annular groove forms a side end face, which is used to axially limit the inserted post. The post is cylindrical, with an annular limiting plate protruding from the center of its outer circumference. The post is inserted axially through the through-hole from the first opening, and the annular limiting plate abuts against the first annular groove. The lower end of the post abuts against the side end face, and the upper end of the post is provided with an external thread. The nut is threadedly connected to the external thread of the post to lock the assembly position of the post and the through hole. The post has a through channel along the axial direction inside. The threaded end of the post is divided into at least two elastic flaps along the circumferential direction. The cross-section of the silicone sleeve is T-shaped, including a limiting head and an insertion rod connected to each other. The silicone sleeve is inserted axially along the through hole through the second opening. Its limiting head is limited and abuts against the second annular groove, and the insertion rod extends into the post and fits against the inner wall of the post.

[0006] Preferably, the upper end face of the annular limiting plate is provided with waterproof adhesive and a waterproof ring. The waterproof adhesive is sandwiched between the annular limiting plate and the waterproof ring. The inner side of the nut is provided with a stepped surface that matches the waterproof ring. When the nut is threadedly connected to the external thread of the hole post, the stepped surface presses the waterproof ring, and the waterproof seal at the through hole assembly is achieved by the waterproof ring squeezing the waterproof adhesive.

[0007] Preferably, a protective cover is detachably connected to the housing. The inner side of the protective cover is provided with a slot, and the housing is provided with a buckle that matches the slot. The protective cover is fixed to the housing by the cooperation of the slot and the buckle. A waterproof pad is provided on the side of the protective cover that is in contact with the housing. The protective cover is provided with an avoidance opening corresponding to the cable through hole. The avoidance opening is used for the cable to pass through.

[0008] Preferably, there are three through holes, and the number of post holes, silicone sleeves and nuts are all set to correspond to the number of through holes. The number of clearance openings on the protective cover is the same as the number of through holes, and the position of each clearance opening is coaxial with the axis of the corresponding through hole.

[0009] Preferably, the outer circumferential surface of the waterproof pad is provided with an annular anti-detachment protrusion, and the contact surface of the protective cover is provided with an anti-detachment groove that matches the annular anti-detachment protrusion, with the annular anti-detachment protrusion embedded in the anti-detachment groove.

[0010] Preferably, the inner wall of the clearance opening is provided with an elastic sealing lip, which protrudes in the axial direction of the clearance opening to fit the cable passing through it.

[0011] Preferably, the inner wall of the first annular groove is provided with an annular sealing groove, and a sealing ring is embedded in the annular sealing groove. The sealing ring is interference-fitted with the outer circumferential surface of the annular limiting plate of the orifice.

[0012] Preferably, the outer circumferential surface of the insertion rod is provided with at least two annular sealing protrusions, which are interference-fitted with the inner wall of the hole column.

[0013] Preferably, an anti-loosening washer is provided between the nut and the annular limiting plate, and the upper and lower end faces of the anti-loosening washer are respectively attached to the stepped surface of the nut and the waterproof ring.

[0014] Preferably, a metal spring is provided on the outer wall where the post meets the through hole.

[0015] The beneficial effects of this utility model are as follows: the first and second annular grooves of the shell axially limit the annular limiting plate of the hole column and the limiting head of the silicone sleeve, respectively. Combined with the threaded connection between the nut and the external thread of the hole column, the assembly position is effectively locked, solving the problem of loose assembly. The elastic flap at the threaded end of the hole column can adapt to the outer diameter of the cable. Combined with the tight fit between the T-shaped silicone sleeve insertion rod and the inner wall of the hole column, it not only enhances the sealing performance and prevents dust and moisture from entering, but also avoids direct friction between the cable and the inner wall of the hole column, solving the problem of cable wear. The overall structure, through the precise cooperation of each component, ensures a firm seal. The threaded connection design of the nut makes disassembly and assembly more convenient, facilitates later maintenance, and is compatible with different specifications of cables, improving the product's adaptability, service life, and safety. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure from a bottom view of Embodiment 1 of this utility model;

[0018] Figure 3 This is an exploded structural diagram of Embodiment 1 of the present invention;

[0019] Figure 4 This is an exploded view of Embodiment 1 of the present invention from a bottom angle.

[0020] Figure 5 This is a cross-sectional structural diagram of Embodiment 1 of the present utility model;

[0021] Figure 6 This is a cross-sectional view of Embodiment 2 of the present invention.

[0022] Figure 7 This is Embodiment Two of the present utility model. Figure 6 Enlarged structural diagram of section A;

[0023] Explanation of reference numerals in the attached diagram: 10-Housing, 11-Through hole, 12-First opening, 13-Second opening, 14-First annular groove, 15-Second annular groove, 16-Snap fastener, 20-Post hole, 21-Annular limiting plate, 22-Waterproof adhesive, 23-Waterproof ring, 24-External thread, 25-Elastic flap, 26-Metal spring, 27-Sealing ring, 30-Silicone sleeve, 31-Limiting head, 32-Insertion rod, 33-Annular sealing ridge, 40-Nut, 41-Step surface, 50-Protective cover, 51-Slot, 52-Allowing opening, 53-Elastic sealing lip, 60-Waterproof pad, 61-Annular anti-detachment boss, 70-Cable. Detailed Implementation

[0024] To more clearly illustrate the structural features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments:

[0025] Example 1: As Figure 1-5 As shown, the through-hole connector includes a housing 10, post 20, silicone sleeve 30, and nut 40. The housing 10 has three through-holes 11. The number of post 20, silicone sleeve 30, and nut 40 corresponds to the number of through-holes 11. The number of through-holes 11 and their corresponding components can be flexibly adjusted according to the requirements of the cable 70. Each through-hole 11 has a first opening 12 and a second opening 13 at both ends. At the port, a first annular groove 14 and a second annular groove 15 are respectively provided for limiting. The inner side of the second annular groove 15 forms a side end face, which is used to axially limit the inserted post 20. The post 20 is columnar, and an annular limiting plate 21 protrudes from the middle of its outer circumference. The post 20 is axially inserted through the first opening 12 along the through hole 11. The annular limiting plate 21 limits and abuts against the first annular groove 14, and the lower end of the post 20 abuts against the side end face. The double limiting of the first annular groove 14 and the side end face achieves axial bidirectional positioning of the hole post 20, preventing movement after assembly and improving structural stability. The upper end of the hole post 20 is provided with an external thread 24, and the nut 40 is threaded onto the external thread 24 of the hole post 20 to lock the assembly position of the hole post 20 and the through hole 11. The upper end face of the annular limiting plate 21 is provided with waterproof adhesive 22 and waterproof ring 23. The waterproof adhesive 22 is sandwiched between the annular limiting plate 21 and the waterproof ring 23. The nut 40 The inner side is provided with a stepped surface 41 that is compatible with the waterproof ring 23. When the nut 40 is threadedly connected to the external thread 24 of the post 20, the stepped surface 41 presses the waterproof ring 23. The waterproof seal at the assembly point of the through hole 11 is achieved by the waterproof ring 23 squeezing the waterproof adhesive 22, making the sealing surface fit more tightly and effectively preventing water vapor and dust from entering. At the same time, the fixing method of the nut 40 threaded connection and the ring limiting plate 21 abutting is convenient for disassembly and maintenance. At the same time, the structure is rigid and has excellent vibration resistance after locking.

[0026] The post 20 has an axially oriented cable passage inside. The threaded end of the post 20 is circumferentially divided into six elastic petals 25. These elastic petals 25 have radial elastic deformation capability, allowing them to adapt to cables 70 of different diameters and reduce tolerance requirements. They also provide flexible clamping for the cable 70, reducing stress concentration during tension and protecting the cable sheath from damage. The silicone sleeve 30 has a T-shaped cross-section, including a connected limiting head 31 and an insertion rod 32. The silicone sleeve 30 has a second opening 13. Inserted axially along the through hole 11, its limiting head 31 is limited and abuts against the second annular groove 15, and the insertion rod 32 extends into the hole post 20 and fits against the inner wall of the hole post 20. The limiting head 31 of the silicone sleeve 30 is precisely limited by the second annular groove 15, and the insertion rod 32 fits tightly against the inner wall of the hole post 20. This not only enhances the secondary sealing of the through channel, but also reduces the hard contact wear between the hole post 20 and the cable 70 through the buffering effect of the silicone material, thus extending the service life of the cable 70.

[0027] A protective cover 50 is detachably connected to the housing 10. The inner side of the protective cover 50 has a slot 51, and the housing 10 has a buckle 16 that matches the slot 51. The protective cover 50 is fixed to the housing 10 through the cooperation of the slot 51 and the buckle 16. The detachable connection between the slot 51 and the buckle 16 allows the protective cover 50 to be installed and removed without tools, facilitating future maintenance or replacement of the cable 70. A waterproof pad 60 is provided on the side of the protective cover 50 that fits against the housing 10, filling the gap between the housing 10 and the protective cover 50. To prevent external moisture from seeping in from the connection point and enhance the overall sealing effect, the protective cover 50 is provided with a clearance opening 52 corresponding to the through hole 11. The clearance opening 52 is used for the cable 70 to pass through. The number of clearance openings 52 on the protective cover 50 is the same as that of the through hole 11, and the position of each clearance opening 52 is coaxially set with the axis of the corresponding through hole 11. The protective cover 50 completely covers the core assembly part, which can not only prevent dust and water, but also prevent damage to the components caused by external impact, and improve the impact resistance of the connector.

[0028] When using, first install the silicone sleeve 30, then the insertion post 20, and then install the waterproof adhesive 22, waterproof ring 23 and nut 40 in sequence, and finally fasten the protective cover 50.

[0029] Example 2: Figure 6 and 7As shown, the through-hole connector includes a housing 10, a post 20, a silicone sleeve 30, and a nut 40. The housing 10 has three through-holes 11. The number of posts 20, silicone sleeves 30, and nuts 40 corresponds to the number of through-holes 11. The number of through-holes 11 and their corresponding components can be flexibly adjusted according to the requirements of the cable 70. Each through-hole 11 has a first opening 12 and a second opening 13 at its two ends. The ports of the first opening 12 and the second opening 13 have a first annular groove 14 and a second annular groove 15 for limiting movement, respectively. The inner side of the second annular groove 15 forms a side end face, which is used to axially limit the inserted post 20. The post 20 is columnar, with an annular groove protruding from the center of its outer circumference. The limiting plate 21 and the post 20 are inserted axially through the first opening 12 along the through hole 11. The annular limiting plate 21 is positioned and abuts against the first annular groove 14, and the lower end of the post 20 abuts against the side end face. The dual limiting by the annular limiting plate 21, the first annular groove 14, and the side end face achieves bidirectional axial positioning of the post 20, preventing movement after assembly and improving structural stability. A metal spring sheet 26 is provided on the outer wall where the post 20 fits against the through hole 11. The metal spring sheet 26 has elastic deformation capability, which allows the post 20 to adapt to through holes 11 with different inner diameters, reducing the machining tolerance requirements of the housing 10 and the post 20, while improving the assembly tightness of the post 20 and the through hole 11 and reducing vibration-induced damage. The first annular groove 14 has an annular sealing groove on its inner wall, and a sealing ring 27 is embedded in the annular sealing groove. The sealing ring 27 is interference-fitted with the outer circumferential surface of the annular limiting plate 21 of the post 20. The upper end of the post 20 has an external thread 24. The nut 40 is threaded onto the external thread 24 of the post 20 to lock the assembly position of the post 20 and the through hole 11. The upper end face of the annular limiting plate 21 has a waterproof adhesive 22 and a waterproof ring 23. The waterproof adhesive 22 is sandwiched between the annular limiting plate 21 and the waterproof ring 23. The inner side of the nut 40 has a stepped surface 41 that matches the waterproof ring 23. When the nut 40 is threaded onto the external thread 24 of the post 20, the stepped surface 41 presses against the waterproof ring 23. The waterproof adhesive 22 is squeezed by the waterproof ring 23, so that the sealing surface adheres to the waterproof ring 23. The tighter fit between the sealing ring 27 and the outer circumference of the annular limiting plate 21 forms a radial seal, which works in conjunction with the axial sealing of the waterproof adhesive 22 and the waterproof ring 23 to create a dual sealing structure in both the radial and axial directions, effectively improving the waterproof and dustproof rating. The threaded connection of the nut 40 and the abutment of the annular limiting plate 21 facilitate disassembly and maintenance. At the same time, the structure is rigid and has excellent vibration resistance after locking. An anti-loosening washer is also provided between the nut 40 and the annular limiting plate 21. The upper and lower end faces of the anti-loosening washer are respectively attached to the stepped surface 41 of the nut 40 and the waterproof ring 23. By increasing the friction between the nut 40 and the waterproof ring 23, the anti-loosening washer effectively prevents the nut 40 from loosening in a high-frequency vibration environment, ensuring the long-term stability of the sealing structure and the reliability of the connection.

[0030] The post 20 has an axially oriented cable passage inside. The threaded end of the post 20 is circumferentially divided into six elastic petals 25. These elastic petals 25 have radial elastic deformation capability, allowing them to adapt to cables 70 of different diameters and reduce tolerance requirements. They also provide flexible clamping for the cable 70, reducing stress concentration during pulling and protecting the cable sheath from damage. The silicone sleeve 30 has a T-shaped cross-section, including a connected limiting head 31 and an insertion rod 32. The silicone sleeve 30 is inserted axially through the second opening 13 along the cable passage hole 11. Its limiting head 31 is positioned and abuts against the second annular groove 15, and the insertion rod 32 extends into the post 20, fitting snugly against its inner wall. The limiting head 31 of the 0 is precisely limited by the second annular groove 15, and the insertion rod 32 is tightly fitted to the inner wall of the hole post 20. This not only enhances the secondary sealing of the wire passage, but also reduces the hard contact wear between the hole post 20 and the cable 70 through the buffering effect of the silicone material, thus extending the service life of the cable 70. The outer circumferential surface of the insertion rod 32 is provided with two annular sealing ridges 33. The annular sealing ridges 33 are interference-fitted with the inner wall of the hole post 20. The two annular sealing ridges 33 of the insertion rod 32 are interference-fitted with the inner wall of the hole post 20, forming a multi-level radial seal. Compared with a single contact surface, the sealing path is longer and the effect is more durable. It can effectively prevent water vapor from seeping into the wire passage along the gap between the hole post 20 and the silicone sleeve 30.

[0031] A protective cover 50 is detachably connected to the housing 10. The inner side of the protective cover 50 has a slot 51, and the housing 10 has a buckle 16 that matches the slot 51. The protective cover 50 is fixed to the housing 10 through the cooperation of the slot 51 and the buckle 16. The detachable connection between the slot 51 and the buckle 16 allows the protective cover 50 to be installed and removed without tools, facilitating future maintenance or replacement of the cable 70. A waterproof pad 60 is provided on the side of the protective cover 50 that fits against the housing 10, and the waterproof pad 60 fills the housing. The fitting gap between the body 10 and the protective cover 50 prevents external moisture from seeping in through the connection, enhancing the overall sealing effect. The outer circumferential surface of the waterproof pad 60 is provided with an annular anti-detachment protrusion 61, and the fitting surface of the protective cover 50 is provided with an anti-detachment groove that matches the annular anti-detachment protrusion 61. The annular anti-detachment protrusion 61 is embedded in the anti-detachment groove. The fitting and cooperation of the annular anti-detachment protrusion 61 and the anti-detachment groove can prevent the waterproof pad 60 from shifting or falling off during the disassembly or vibration of the protective cover 50, ensuring the sealing gap. To ensure stability and maintain the sealing effect of the waterproof pad 60, thus improving the long-term reliability of the solution, the protective cover 50 is provided with a clearance opening 52 corresponding to the through hole 11. The clearance opening 52 is used for the cable 70 to pass through. The inner wall of the clearance opening 52 is provided with an elastic sealing lip 53. The elastic sealing lip 53 protrudes in the axial direction of the clearance opening 52 to fit the cable 70 through it. This can accommodate cables 70 of different diameters and fit the surface of the cable 70 in real time, preventing external impurities from entering through the gap between the clearance opening 52 and the cable 70. At the same time, it forms a flexible wrap around the cable 70, further reducing pulling and wear. The number of clearance openings 52 on the protective cover 50 is the same as that of the through hole 11, and the position of each clearance opening 52 is coaxially set with the axis of the corresponding through hole 11. The protective cover 50 completely wraps the core assembly part, which can not only prevent dust and water, but also prevent damage to the components caused by external impact, thus improving the impact resistance of the connector.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Therefore, any modifications, equivalent substitutions, improvements, etc., made to the above embodiments based on the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A through-hole connector, comprising a housing, a post, a silicone sleeve, and a nut, characterized in that: The housing has a through hole for wires, with a first opening and a second opening at each end. At the ends of the first and second openings are respectively provided a first annular groove and a second annular groove for limiting movement. The inner side of the second annular groove forms a side end face, which is used to axially limit the inserted post. The post is columnar, with an annular limiting plate protruding from the center of its outer circumference. The post is inserted axially through the through hole from the first opening, with the annular limiting plate abutting against the first annular groove, and the lower end of the post abutting against the side end face. The upper end of the post has an external thread, and a nut is threaded onto the external thread of the post to lock the assembly position of the post and the through hole. The post has an axial through channel inside, and the threaded end of the post is divided circumferentially to form at least two elastic flaps. The cross-section of the silicone sleeve is T-shaped, including a limiting head and an insertion rod connected to each other. The silicone sleeve is inserted axially through the through hole from the second opening. Its limiting head is limited and abuts against the second annular groove, and the insertion rod extends into the post and fits against the inner wall of the post.

2. The through-hole connector according to claim 1, characterized in that: The upper surface of the annular limiting plate is provided with waterproof adhesive and a waterproof ring. The waterproof adhesive is sandwiched between the annular limiting plate and the waterproof ring. The inner side of the nut is provided with a stepped surface that matches the waterproof ring. When the nut is threadedly connected to the external thread of the hole column, the stepped surface presses the waterproof ring, and the waterproof seal at the through hole assembly is achieved by the waterproof ring squeezing the waterproof adhesive.

3. The through-hole connector according to claim 1, characterized in that: A protective cover is detachably connected to the housing. The inner side of the protective cover has a slot, and the housing has a buckle that matches the slot. The protective cover is fixed to the housing by the cooperation of the slot and the buckle. A waterproof pad is provided on the side of the protective cover that is in contact with the housing. The protective cover has a clearance opening that corresponds to the cable through hole. The clearance opening is used for the cable to pass through.

4. The through-hole connector according to claim 3, characterized in that: There are three through holes. The number of post holes, silicone sleeves and nuts are all set to correspond to the number of through holes. The number of clearance openings on the protective cover is the same as the number of through holes, and the position of each clearance opening is set coaxially with the axis of the corresponding through hole.

5. The through-hole connector according to claim 3, characterized in that: The outer circumference of the waterproof pad is provided with an annular anti-detachment protrusion, and the contact surface of the protective cover is provided with an anti-detachment groove that matches the annular anti-detachment protrusion. The annular anti-detachment protrusion is embedded in the anti-detachment groove.

6. The through-hole connector according to claim 3, characterized in that: The inner wall of the clearance opening is provided with an elastic sealing lip, which protrudes in the axial direction of the clearance opening to fit the cable passing through it.

7. The through-hole connector according to any one of claims 1-6, characterized in that: The inner wall of the first annular groove is provided with an annular sealing groove, and a sealing ring is embedded in the annular sealing groove. The sealing ring is interference-fitted with the outer circumferential surface of the annular limiting plate of the orifice.

8. The through-hole connector according to any one of claims 1-6, characterized in that: The outer circumferential surface of the insertion rod is provided with at least two annular sealing protrusions, which are interference-fitted with the inner wall of the hole column.

9. The through-hole connector according to any one of claims 1-6, characterized in that: An anti-loosening washer is also provided between the nut and the annular limiting plate. The upper and lower end faces of the anti-loosening washer are respectively attached to the stepped surface of the nut and the waterproof ring.

10. The through-hole connector according to any one of claims 1-6, characterized in that: A metal spring is provided on the outer wall where the post meets the through hole.

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