A sealed waterproof optical fiber cable electrical connector

Abstract

The utility model relates to the field of electric connector provides a sealed waterproof type optical fiber cable electric connector. Including head subassembly, tail part subassembly, optical fiber cable and connector joint, tail part subassembly installs in the tail of head subassembly, and tail part subassembly includes sheath and tail cap, and the front end of sheath is installed with the trumpet mouth rubber bushing cooperation with conical rubber bushing, and the trumpet mouth rubber bushing coaxially covers conical rubber bushing, and optical fiber cable passes through trumpet mouth rubber bushing and conical rubber bushing, through the combination of trumpet mouth rubber bushing and conical rubber bushing between sheath and head casing, after cable passes through, extrusion realizes the sealing in the tail of head casing, realizes the secondary sealing in the tail of sheath through the extrusion cooperation of sealing rubber bushing and wedge sleeve in sheath, through the mode of double sealing, realize the close support and waterproof of optical fiber cable. Through the mode of setting spring, can effectively avoid the friction between optical fiber cable and tail cap and reduce the damage caused when cable bending, improve its service life.

Description

Technical Field

[0001] This utility model relates to the field of electrical connectors, specifically to a sealed and waterproof fiber optic cable electrical connector. Background Technology

[0002] Fiber optic cable connectors are generally used in high-speed signal transmission applications, such as radar signal transmission. One end of the fiber optic cable provides a connector for connecting to external devices or radar equipment via a header assembly or connector assembly, while the other end connects to devices such as computers via a PC connector or LC connector.

[0003] The optical fiber in fiber optic cable connectors is a crucial component for signal transmission. The end where the fiber connects to the head assembly or connector typically uses a tail assembly for cable fixation and sealing. Existing tail structures use clamping plates to secure the cable, preventing damage to the connection between the cable and head assembly due to pulling or other actions during use. However, due to the diverse applications of fiber optic cable connectors, especially in humid environments such as outdoors or at sea, the tail structure needs to be waterproof and sealant to prevent corrosion of the internal connection structure. Furthermore, appropriate structural designs are required to prevent internal connection failures or damage to the cable's outer sheath caused by repeated bending during use, thereby improving the reliability and lifespan of the fiber optic cable connector. Summary of the Invention

[0004] To meet the requirements of fiber optic cable connectors in special scenarios such as radar and to improve their reliability and service life, this utility model provides a sealed and waterproof fiber optic cable connector.

[0005] The technical solution adopted by this utility model is as follows: A sealed and waterproof fiber optic cable connector includes a head assembly, a tail assembly, a fiber optic cable, and a connector joint. One end of the fiber optic cable is electrically connected to a pin in the head assembly, and the other end is electrically connected to the connector joint. The tail assembly is installed at the tail of the head assembly, and the fiber optic cable passes through the tail assembly. The tail assembly includes a sheath and a tail cap. The sheath is inserted into the interior of the head assembly housing, and the sheath engages with the internal thread of the head assembly housing via an external thread at the insertion end. A tapered rubber sleeve is installed inside the head assembly housing, and the end face of the tapered rubber sleeve is limited by a stepped surface inside the head assembly housing. The front end of the sheath is fitted with a flared sleeve that mates with the tapered sleeve. The flared sleeve is coaxially fitted with the tapered sleeve, and the optical fiber cable passes through the flared sleeve and the tapered sleeve. A tail cap is installed at the tail of the sheath, and the internal thread of the tail cap mates with the external thread at the tail of the sheath. A sealing sleeve is installed inside the rear end of the sheath, and the optical fiber cable passes through the sealing sleeve. The sealing sleeve is limited by a stepped surface inside the sheath. The tail of the sealing sleeve is tapered, and a wedge sleeve is pressed between the tapered surface of the sealing sleeve and the inner wall of the sheath. The tail cap presses the wedge sleeve along the axis of the wedge sleeve.

[0006] Furthermore, the tail cap has a spring hole at its center and a spring groove on its inner side. The end of the spring is limited by the spring groove, and the spring extends out of the outer side of the tail cap. The spring is fitted onto the optical fiber cable.

[0007] Furthermore, the optical fiber cable is divided into multiple branch lines by a splitter, and each branch line is equipped with a connector.

[0008] Furthermore, the head component is replaced with a seat component.

[0009] Furthermore, the outer side of the sheath is provided with a stepped surface, which mates with the end face of the head assembly housing, and a sealing ring is provided on the stepped surface.

[0010] Furthermore, the root of the conical rubber sleeve is provided with a cylindrical section, and the side of the cylindrical section is provided with a sealing ring that mates with the inner wall of the head assembly housing.

[0011] Furthermore, the inner side of the sheath is provided with a stepped surface, and a retaining spring groove is provided in front of the stepped surface. A retaining spring is installed in the retaining spring groove, and the retaining spring limits the rear end face of the flared mouth rubber sleeve.

[0012] After adopting the above technical solution, the beneficial effects of this utility model are as follows: The combination of the flared and conical rubber sleeves between the sheath and the head housing achieves a seal at the tail of the head housing through compression after the cable passes through. A secondary seal at the tail of the sheath is achieved through the compression cooperation between the sealing rubber sleeve inside the sheath and the wedge sleeve. This double sealing method provides both tight support for the optical fiber cable and sufficient waterproofing. The spring design effectively avoids friction between the optical fiber cable and the tail cap, reduces damage caused by cable bending, and improves its service life. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the tail assembly.

[0015] In the diagram: Head assembly 1, Fiber optic cable 2, Connector 3, Sheath 4, Tail cap 5, Sealing ring 6, Conical sleeve 7, Sealing ring 8, Horn sleeve 9, Sealing sleeve 10, Wedge sleeve 11, Spring groove 12, Spring 13, Splitter 14, Splitter body 15. Detailed Implementation

[0016] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings: like Figure 1 As shown, a sealed and waterproof fiber optic cable connector comprises a head assembly 1, a tail assembly, a fiber optic cable 2, and a connector 3, used for high-speed signal transmission in radar. Depending on the specific application requirements, a base assembly can be used instead of the head assembly. Both the base assembly and the head assembly are J599 circular electrical connectors.

[0017] One end of the optical fiber cable 2 is electrically connected to the pins in the head assembly, and the head assembly 1 is connected to the base assembly of the radar equipment to realize signal transmission; the other end of the optical fiber cable 2 is electrically connected to the connector 3, and is connected to a computer or processing equipment through the connector 3 to output and process the radar signal.

[0018] To achieve sealing, protection, and fixation of the cable, a tail assembly is installed at the tail of the head assembly housing 1. The optical fiber cable passes through the tail assembly and is fixed and sealed by it. The tail assembly consists of a sheath 4 and a tail cap 5. The sheath 4 is inserted into the inner cavity of the tail of the head assembly housing, and is fixed by the external thread of the sheath 4 engaging with the internal thread of the head assembly housing. The outer side of the sheath 4 has a stepped surface that mates with the end face of the tail of the head assembly housing. A sealing ring 6 is provided on the stepped surface to achieve a seal.

[0019] A conical rubber sleeve 7 is installed inside the head assembly housing. The end face of the conical rubber sleeve 7 is limited by a stepped surface inside the head assembly housing. The root of the conical rubber sleeve 7 has a cylindrical section, and the side of the cylindrical section has a sealing ring 8 that mates with the inner wall of the head assembly housing. A flared rubber sleeve 9 that mates with the conical rubber sleeve is installed at the front end of the sheath 4. The flared rubber sleeve 9 is coaxially fitted onto the conical rubber sleeve 7, and the optical fiber cable passes through the flared rubber sleeve 9 and the conical rubber sleeve 7. A stepped surface is provided on the inner side of the sheath 4, and a retaining spring groove is provided in front of the stepped surface. A retaining spring is installed in the retaining spring groove, and the retaining spring limits the rear end face of the flared rubber sleeve 9. When the sheath 4 is connected to the head assembly housing, the two rubber sleeves press against each other, fixing the optical fiber cable 2 and tightly filling the inner cavity of the head housing and the inner cavity on the front side of the sheath 4, thus achieving a seal.

[0020] The tail cap 5 is installed at the tail of the sheath 4, and the internal thread of the tail cap 5 is engaged with the external thread at the tail of the sheath 4 for fixation. A sealing sleeve 10 is installed inside the rear end of the sheath 4, and the optical fiber cable 2 passes through the sealing sleeve 10 and is lifted into the center hole of the tail cap 5. The sealing sleeve 10 is limited by the stepped surface inside the sheath, and the tail of the sealing sleeve 10 is tapered. A wedge sleeve 11 is pressed between the tapered surface of the sealing sleeve 10 and the inner wall of the sheath. When the tail cap 5 is installed into the sheath 4, the wedge sleeve 11 is pressed along the axial direction of the wedge sleeve 11. Through compression, the sealing sleeve 10 is tightly filled between the optical fiber cable 2 and the tail cap 5, forming a fixation and seal.

[0021] A spring hole is provided in the center of the end cap 5, and a spring groove 12 is provided on the inner side of the end cap. The end of the spring 13 is limited by the spring groove 12. The spring 13 is sleeved on the outside of the optical fiber cable 2 and extends out of the outside of the end cap 5. When the optical fiber cable bends, the spring 13 limits the bending angle and prevents it from shearing with the end cap, thereby improving its service life.

[0022] In this technical solution, the optical fiber cable 2 is split into two branch lines 15 by the splitter 14, and each branch line 15 is equipped with a connector 3.

Claims

1. A sealed and waterproof fiber optic cable connector, comprising a head assembly, a tail assembly, a fiber optic cable, and a connector joint, wherein one end of the fiber optic cable is electrically connected to a pin in the head assembly, and the other end of the fiber optic cable is electrically connected to the connector joint; the tail assembly is mounted at the tail of the head assembly, and the fiber optic cable passes through the tail assembly, characterized in that, The tail assembly includes a sheath and a tail cap. The sheath is inserted into the head assembly housing, and its external thread engages with the internal thread of the head assembly housing. A tapered rubber sleeve is installed inside the head assembly housing, with its end face limited by a stepped surface within the housing. A flared rubber sleeve is installed at the front end of the sheath, engaging with the tapered rubber sleeve. The flared rubber sleeve is coaxially fitted onto the tapered rubber sleeve, and the optical fiber cable passes through the flared rubber sleeve and the tapered rubber sleeve. The tail cap is installed at the tail of the sheath, with its internal thread engaging with the external thread at the tail of the sheath. A sealing rubber sleeve is installed at the rear end of the sheath, through which the optical fiber cable passes. The sealing rubber sleeve is limited by a stepped surface within the sheath, and its tail is tapered. A wedge sleeve is pressed between the tapered surface of the sealing rubber sleeve and the inner wall of the sheath, and the tail cap presses against the wedge sleeve along its axial direction.

2. The sealed and waterproof fiber optic cable connector according to claim 1, characterized in that, The tail cap has a spring hole in the center and a spring groove on the inner side. The end of the spring is limited by the spring groove and extends out of the outer side of the tail cap. The spring is fitted onto the optical fiber cable.

3. The sealed and waterproof fiber optic cable connector according to claim 1, characterized in that, The optical fiber cable is divided into multiple branch lines by a splitter, and each branch line is equipped with a connector.

4. A sealed and waterproof fiber optic cable connector according to claim 1, characterized in that, Replace the header component with the base component.

5. A sealed and waterproof fiber optic cable connector according to claim 1, characterized in that, The outer side of the sheath has a stepped surface, which mates with the end face of the head assembly housing, and a sealing ring is provided on the stepped surface.

6. A sealed and waterproof fiber optic cable connector according to claim 1, characterized in that, The tapered rubber sleeve has a cylindrical section at its root, and a sealing ring that mates with the inner wall of the head assembly housing is provided on the side of the cylindrical section.

7. A sealed and waterproof fiber optic cable connector according to claim 1, characterized in that, The inner side of the sheath is provided with a stepped surface, and a retaining spring groove is provided in front of the stepped surface. A retaining spring is installed in the retaining spring groove, and the retaining spring limits the rear end face of the flared mouth rubber sleeve.

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