# US 12,222,555 B2 · Optical connector plug for outdoor waterproof onsite assembly and method for manufacturing the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,222,555 B2 - Document ID: US12222555B2 - Status: Granted - Kind: B2 - Application number: 17/640,578 - Filed: 2020-08-24 - Published: 2022-10-13 - Granted: 2025-02-11 - Earliest claimed: 2019-09-25 - Assignees: UCL Co., Ltd. - Applicants: UCL Co., Ltd. - Inventors: Kun Ik Jun; Pil Soon Kang; Chan Soul Park - Web page: https://patentgrep.com/patent/US12222555B2 ## CPC - G02B 6/3849: {using mechanical protective elements, e.g. caps, hoods, sealing membranes (G02B6/3816 takes precedence; provisionally see H01R13/44)} - G02B 6/3816: {for use under water, high pressure connectors (provisionally see G02B6/4428)} - G02B 6/3846: {with fibre stubs} - G02B 6/38875: {Protection from bending or twisting} - G02B 6/3897: {Connectors fixed to housings, casing, frames or circuit boards (G02B6/44528 takes precedence)} - G02B 6/4471: {Terminating devices (demountable connectors G02B6/3807); Cable clamps} - Y02A 30/00: Adapting or protecting infrastructure or their operation - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE ## Abstract An optical connector plug for outdoor waterproof onsite assembly. A frame having slits sheathes and is fixed to an optical cable when the optical cable is constructed on a site. The optical connector plug is waterproofed by a protective tube and an O-ring. The optical cable has a tip at one side which is attached to an assembly in a sealing or mechanical manner, and the frame sheathing an outer side of the optical cable has one side end to which an outer peripheral edge of the assembly is coupled, has the one or more slits which are cut from a middle to the other side end and are formed to be widened and narrowed in compliance with an outer diameter of the optical cable, and has a step on an outer peripheral edge at one side end to be held by an inner peripheral edge of a housing. ## Claims ### Claim 1 An optical connector plug for outdoor waterproof onsite assembly, comprising: an optical connector that is coupled to a tip of an optical cable cut on a site, wherein the tip at one side of the optical cable (10) is attached to an assembly (20) in a sealing or mechanical manner, and a frame (40) sheathing an outer side of the optical cable (10) has one side end to which an outer peripheral edge of the assembly (20) is coupled, has one or more slits (42) which are cut from a middle to another side end and are formed to be widened and narrowed in compliance with an outer diameter of the optical cable (10), and has a step (41) on an outer peripheral edge at one side end to be held by an inner peripheral edge of a housing (60) so as to withstand tensile strength applied to the optical cable (10) wherein the frame (40) sheathes a sleeve (30) and the optical cable (10), wherein the sleeve (30) sheathes a sealing part at which a cut tip at one side of the optical cable (10) is attached to an end of an optical fiber of the optical cable (10) of the assembly (20), wherein a fixing unit (50) is coupled to the other side end of the frame (40) to fix the frame (40) to an outer peripheral edge of the optical cable (10), wherein the housing (60) is coupled to an outer side of the frame (40), and a protective cap (100) is coupled to one end of the housing (60) through a rotation cap (70), wherein a protective tube (80) is coupled to sheathe another end of the housing (60) and the optical cable (10), and wherein a boot (90) is coupled to an outer side of the protective tube (80) and inhibits the optical cable (10) from being excessively bent. ### Claim 2 (depends on 1) The optical connector plug for outdoor waterproof onsite assembly according to claim 1, wherein the sleeve (30) is configured of a shrinkable tube or an adhesive reinforcing member, and the protective tube (80) is configured of a shrinkable tube. ### Claim 3 (depends on 2) A method for manufacturing an optical connector plug for outdoor waterproof onsite assembly according to claim 2, comprising: a step (S10) of cutting the optical cable (10) based on a construction length of the optical cable on a site where the optical cable (10) is constructed; a step (S20) of connecting the tip at one side end of the cut optical cable (10) to another side end of the optical cable (10) which is coupled to the assembly (20) and sheathing an attachment part by inserting the sleeve (30) into a connection part; a step (S30) of sheathing an outer side of the connected optical cable (10) with the frame (40) and inserting and fixing the assembly (20) into an edge at one side of the frame (40); a step (S40) of coupling the fixing unit (50) to an edge at another side of the frame (40) to fix the frame (40) through compression; a step (S50) of coupling the protective cap (100) protecting the assembly (20) to one end of the frame (40) and coupling and fixing the housing (60) to the outer peripheral edge of the frame (40) by coupling the protective cap (100) to the rotation cap (70); a step (S60) of coupling the protective tube (80) such that a side of the housing (60) is partially sheathed to fulfill waterproofing and the outer peripheral edge of the optical cable (10) is sheathed; and a step (S70) of protecting the optical cable from excessive bending by coupling the boot (90) to the outer side of the protective tube (80). ### Claim 4 (depends on 1) The optical connector plug for outdoor waterproof onsite assembly according to claim 1, wherein the housing (60) has an O-ring groove (62) on an outer peripheral edge at one side to which an O-ring (61) is coupled, and the one side having the O-ring groove (62) is coupled to an adaptor formed in an optical terminal box such that waterproofing is fulfilled with the O-ring (61) in the O-ring groove (62). ### Claim 5 (depends on 4) A method for manufacturing an optical connector plug for outdoor waterproof onsite assembly according to claim 4, comprising: a step (S10) of cutting the optical cable (10) based on a construction length of the optical cable on a site where the optical cable (10) is constructed; a step (S20) of connecting the tip at one side end of the cut optical cable (10) to another side end of the optical cable (10) which is coupled to the assembly (20) and sheathing an attachment part by inserting the sleeve (30) into a connection part; a step (S30) of sheathing an outer side of the connected optical cable (10) with the frame (40) and inserting and fixing the assembly (20) into an edge at one side of the frame (40); a step (S40) of coupling the fixing unit (50) to an edge at another side of the frame (40) to fix the frame (40) through compression; a step (S50) of coupling the protective cap (100) protecting the assembly (20) to one end of the frame (40) and coupling and fixing the housing (60) to the outer peripheral edge of the frame (40) by coupling the protective cap (100) to the rotation cap (70); a step (S60) of coupling the protective tube (80) such that a side of the housing (60) is partially sheathed to fulfill waterproofing and the outer peripheral edge of the optical cable (10) is sheathed; and a step (S70) of protecting the optical cable from excessive bending by coupling the boot (90) to the outer side of the protective tube (80). ### Claim 6 (depends on 1) The optical connector plug for outdoor waterproof onsite assembly according to claim 1, wherein one side end of the assembly (20) is formed to protrude more than one side end of the housing (60) so as to be easily connected to an adaptor formed in an optical terminal box when being coupled to the adaptor. ### Claim 7 (depends on 6) A method for manufacturing an optical connector plug for outdoor waterproof onsite assembly according to claim 6, comprising: a step (S10) of cutting the optical cable (10) based on a construction length of the optical cable on a site where the optical cable (10) is constructed; a step (S20) of connecting the tip at one side end of the cut optical cable (10) to another side end of the optical cable (10) which is coupled to the assembly (20) and sheathing an attachment part by inserting the sleeve (30) into a connection part; a step (S30) of sheathing an outer side of the connected optical cable (10) with the frame (40) and inserting and fixing the assembly (20) into an edge at one side of the frame (40); a step (S40) of coupling the fixing unit (50) to an edge at another side of the frame (40) to fix the frame (40) through compression; a step (S50) of coupling the protective cap (100) protecting the assembly (20) to one end of the frame (40) and coupling and fixing the housing (60) to the outer peripheral edge of the frame (40) by coupling the protective cap (100) to the rotation cap (70); a step (S60) of coupling the protective tube (80) such that a side of the housing (60) is partially sheathed to fulfill waterproofing and the outer peripheral edge of the optical cable (10) is sheathed; and a step (S70) of protecting the optical cable from excessive bending by coupling the boot (90) to the outer side of the protective tube (80). ### Claim 8 (depends on 1) The optical connector plug for outdoor waterproof onsite assembly according to claim 1, wherein one end of a connection body (101) connected to the housing (60) is coupled to an outer peripheral edge of the protective cap (100), and another end of the connection body (101) is formed in a clip shape to be inserted into and coupled to an outer peripheral edge of the housing (60), and wherein an inner peripheral edge at a side of the protective cap has threads which are coupled to and fixed to the rotation cap (70) through rotation of threads formed on an outer peripheral edge of the rotation cap (70). ### Claim 9 (depends on 8) A method for manufacturing an optical connector plug for outdoor waterproof onsite assembly according to claim 8, comprising: a step (S10) of cutting the optical cable (10) based on a construction length of the optical cable on a site where the optical cable (10) is constructed; a step (S20) of connecting the tip at one side end of the cut optical cable (10) to another side end of the optical cable (10) which is coupled to the assembly (20) and sheathing an attachment part by inserting the sleeve (30) into a connection part; a step (S30) of sheathing an outer side of the connected optical cable (10) with the frame (40) and inserting and fixing the assembly (20) into an edge at one side of the frame (40); a step (S40) of coupling the fixing unit (50) to an edge at another side of the frame (40) to fix the frame (40) through compression; a step (S50) of coupling the protective cap (100) protecting the assembly (20) to one end of the frame (40) and coupling and fixing the housing (60) to the outer peripheral edge of the frame (40) by coupling the protective cap (100) to the rotation cap (70); a step (S60) of coupling the protective tube (80) such that a side of the housing (60) is partially sheathed to fulfill waterproofing and the outer peripheral edge of the optical cable (10) is sheathed; and a step (S70) of protecting the optical cable from excessive bending by coupling the boot (90) to the outer side of the protective tube (80). ### Claim 10 (depends on 1) The optical connector plug for outdoor waterproof onsite assembly according to claim 1, wherein the fixing unit (50) is configured of one of a clamp ring, a rotating ring, or a fastening ring. ### Claim 11 (depends on 10) A method for manufacturing an optical connector plug for outdoor waterproof onsite assembly according to claim 10, comprising: a step (S10) of cutting the optical cable (10) based on a construction length of the optical cable on a site where the optical cable (10) is constructed; a step (S20) of connecting the tip at one side end of the cut optical cable (10) to another side end of the optical cable (10) which is coupled to the assembly (20) and sheathing an attachment part by inserting the sleeve (30) into a connection part; a step (S30) of sheathing an outer side of the connected optical cable (10) with the frame (40) and inserting and fixing the assembly (20) into an edge at one side of the frame (40); a step (S40) of coupling the fixing unit (50) to an edge at another side of the frame (40) to fix the frame (40) through compression; a step (S50) of coupling the protective cap (100) protecting the assembly (20) to one end of the frame (40) and coupling and fixing the housing (60) to the outer peripheral edge of the frame (40) by coupling the protective cap (100) to the rotation cap (70); a step (S60) of coupling the protective tube (80) such that a side of the housing (60) is partially sheathed to fulfill waterproofing and the outer peripheral edge of the optical cable (10) is sheathed; and a step (S70) of protecting the optical cable from excessive bending by coupling the boot (90) to the outer side of the protective tube (80). ### Claim 12 (depends on 1) A method for manufacturing an optical connector plug for outdoor waterproof onsite assembly according to claim 1, comprising: a step (S10) of cutting the optical cable (10) based on a construction length of the optical cable on a site where the optical cable (10) is constructed; a step (S20) of connecting the tip at one side end of the cut optical cable (10) to another side end of the optical cable (10) which is coupled to the assembly (20) and sheathing an attachment part by inserting the sleeve (30) into a connection part; a step (S30) of sheathing an outer side of the connected optical cable (10) with the frame (40) and inserting and fixing the assembly (20) into an edge at one side of the frame (40); a step (S40) of coupling the fixing unit (50) to an edge at another side of the frame (40) to fix the frame (40) through compression; a step (S50) of coupling the protective cap (100) protecting the assembly (20) to one end of the frame (40) and coupling and fixing the housing (60) to the outer peripheral edge of the frame (40) by coupling the protective cap (100) to the rotation cap (70); a step (S60) of coupling the protective tube (80) such that a side of the housing (60) is partially sheathed to fulfill waterproofing and the outer peripheral edge of the optical cable (10) is sheathed; and a step (S70) of protecting the optical cable from excessive bending by coupling the boot (90) to the outer side of the protective tube (80). ### Claim 13 A method for manufacturing an optical connector plug for outdoor waterproof onsite assembly, the assembly comprising an optical connector that is coupled to a tip of an optical cable cut on a site, wherein the tip at one side of the optical cable (10) is attached to an assembly (20) in a sealing or mechanical manner, and a frame (40) sheathing an outer side of the optical cable (10) has one side end to which an outer peripheral edge of the assembly (20) is coupled, has one or more slits (42) which are cut from a middle to another side end and are formed to be widened and narrowed in compliance with an outer diameter of the optical cable (10), and has a step (41) on an outer peripheral edge at one side end to be held by an inner peripheral edge of a housing (60) so as to withstand tensile strength applied to the optical cable (10), the method comprising: a step (S10) of cutting the optical cable (10) based on a construction length of the optical cable on a site where the optical cable (10) is constructed; a step (S20) of connecting the tip at one side end of the cut optical cable (10) to another side end of the optical cable (10) which is coupled to the assembly (20) and sheathing an attachment part by inserting a sleeve (30) into a connection part; a step (S30) of sheathing an outer side of the connected optical cable (10) with the frame (40) and inserting and fixing the assembly (20) into an edge at one side of the frame (40); a step (S40) of coupling a fixing unit (50) to an edge at another side of the frame (40) to fix the frame (40) through compression; a step (S50) of coupling a protective cap (100) protecting the assembly (20) to one end of the frame (40) and coupling and fixing the housing (60) to the outer peripheral edge of the frame (40) by coupling the protective cap (100) to a rotation cap (70); a step (S60) of coupling a protective tube (80) such that a side of the housing (60) is partially sheathed to fulfill waterproofing and an outer peripheral edge of the optical cable (10) is sheathed; and a step (S70) of protecting the optical cable from excessive bending by coupling a boot (90) to an outer side of the protective tube (80).