An optical fiber plug connector and a connector assembly

Abstract

The present invention relates to the technical field of connectors, and particularly relates to an optical fiber plug connector and a connector assembly. The optical fiber plug connector includes: a plug housing and a conductive member; a contact member is provided inside the plug housing, the front end of the plug housing is a plug-in end for connecting with a mating socket, and a cable through hole is provided at the rear end of the plug housing for a cable to pass through and connect with the contact member; the conductive member is disposed inside the plug housing, the front end of the conductive member is used for directly electrically contacting or indirectly electrically connecting with the chassis where the mating socket is installed, and the rear end of the conductive member is used for directly electrically contacting or indirectly electrically connecting with the metal armor tube inside the cable, so that the static charge on the metal armor tube is introduced into the chassis through the conductive member, realizing the grounding of the metal armor tube.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, and in particular to an optical fiber plug connector and a connector assembly. Background Art

[0002] Existing connectors, such as the optical fiber plug connector plug disclosed in the Chinese invention patent application with application publication number CN110346876A, include a plug housing and a ferrule component, which is arranged in the plug housing. The rear end of the plug housing is provided with an optical cable insertion channel for the optical cable to pass through; the ferrule component includes an optical cable fixing structure, which includes a support sleeve and a crimping sleeve, and the optical cable housing of the optical cable is fixed by the support sleeve and the crimping sleeve.

[0003] Normally, the above-mentioned fiber optic connectors need to be connected to optical fibers when in use. Optical fibers are made of non-metallic materials and are not subject to electromagnetic interference, so lightning disasters and strong electricity effects can be ignored. However, communication optical cables actually need to adapt to various installation methods such as overhead, pipeline and direct burial, withstand various stretching, impact, extrusion, bending, torsion and high and low temperature tests, and be able to prevent damage by rodents. Therefore, when manufacturing optical cables, metal armor tubes or steel wire reinforcement lines are added to form armored optical cables that can adapt to various environments.

[0004] Armored optical cables reduce the risk of network downtime caused by construction problems, external cable pressure, rodents or other factors. However, due to the presence of metal parts in the cable, when it is installed in an open outdoor environment, it is easy to have a concentration of induced charges, causing interference from a strong magnetic field around it. Therefore, in the electromagnetic field formed by lightning clouds, the optical cable line is very likely to be struck by lightning due to tip discharge. Even if there is no direct lightning strike, the optical cable line will directly cause a high-amplitude lightning operation wave on the optical cable line due to the electromagnetic induction of static charges, and generate a ground current rotation at the terminal, causing the charges in the cloud to flow into the earth to generate strong energy and instantaneous power, which often brings serious damage to the optical cable line. Therefore, doing a good job of lightning protection for optical cable lines has very important practical application value and realistic significance for protecting optical fiber communication line equipment and maintenance personnel from the hazards of strong electricity and lightning strikes. Summary of the invention

[0005] The purpose of the present invention is to provide a fiber optic plug connector, so that when the fiber optic plug connector is connected to the adapter socket, the metal armor tube in the optical cable can be grounded to reduce the harm caused by the external electric charge of the armored optical cable; the purpose of the present invention is also to provide a connector assembly, which is used to achieve the grounding of the metal armor tube in the optical cable to reduce the harm caused by the external electric charge of the armored optical cable.

[0006] To achieve the above-mentioned purpose, the technical solution 1 of the optical fiber plug connector of the present invention is:

[0007] The fiber optic plug connector includes:

[0008] A plug housing with a contact member inside. The front end of the plug housing is a plug-in end for connecting with a mating socket. The rear end of the plug housing is provided with an optical cable through hole for the optical cable to pass through and connect with the contact member.

[0009] It further includes:

[0010] A conductive member disposed inside the plug housing. The front end of the conductive member is used for direct conductive contact or indirect conductive connection with the chassis where the mating socket is installed. The rear end of the conductive member is used for direct conductive contact or indirect conductive connection with the metal armor tube inside the optical cable, so that the static charge on the metal armor tube is introduced into the chassis through the conductive member, realizing the grounding of the metal armor tube.

[0011] The beneficial effect of the present invention is: When in use, the optical cable is fixed at the rear end of the fiber optic plug connector. After the fiber optic plug connector is connected to the mating socket, the front end of the conductive member is in direct contact with the chassis where the mating socket is installed, or the front end of the conductive member is indirectly conductively connected to the chassis where the mating socket is installed through other conductive components, realizing the conduction between the conductive member and the chassis; the rear end of the conductive member is in direct conductive contact with the metal armor tube, or the rear end of the conductive member is indirectly conductively connected to the metal armor tube inside the optical cable through other conductive components, realizing the conduction between the conductive member and the metal armor tube inside the optical cable, so that the static charge on the metal armor tube is introduced into the chassis through the conductive member and finally introduced into the ground through the chassis, realizing the grounding of the metal armor tube in the optical cable.

[0012] Technical solution 2 obtained by improving on the basis of technical solution 1 of the fiber optic plug connector:

[0013] A support sleeve is provided inside the plug housing. The support sleeve supports the contact member. The support sleeve is provided with a core through hole for the core of the optical cable to pass through and connect with the contact member.

[0014] The support sleeve is a conductive support sleeve for conductive connection with the metal armor tube.

[0015] The conductive member is a rod or sheet extending in the front-rear direction. The rear end of the conductive member is conductively connected to the support sleeve, so that the rear end of the conductive member is indirectly conductively connected to the metal armor tube through the support sleeve. The front end of the conductive member forms an overhanging end for direct conductive contact with the chassis, so that the static charge on the metal armor tube is introduced into the chassis through the support sleeve and the conductive member, realizing grounding.

[0016] Beneficial effect: Utilize the support sleeve of the fiber optic plug connector itself to realize the conductive connection between the conductive member and the metal armor tube. Only need to make adaptive improvements to the support sleeve on the basis of the existing fiber optic plug connector, which is convenient for design and processing and is beneficial to simplifying the overall structure of the fiber optic plug connector.

[0017] Technical solution 3 obtained by improving on the basis of technical solution 2 of the fiber optic plug connector:

[0018] The rear end of the core perforation is a stepped hole, and the stepped hole has a rear-facing stepped surface. The large-diameter section of the stepped hole is used for plugging and mating with the metal armor tube, so that the support sleeve and the metal armor tube are in conductive contact;

[0019] The rear end of the support sleeve is provided with a crimping section, so that when the metal armor tube is inserted and mated with the stepped hole, the metal armor tube and the crimping section can be crimped and fixed through a crimping sleeve sleeved on the crimping section, so that the metal armor tube and the support sleeve remain in conductive contact.

[0020] Beneficial effect: It is beneficial to achieve reliable conductive contact between the metal armor tube and the support sleeve.

[0021] Technical solution 4 obtained by improving on the basis of technical solution 2 of the fiber optic plug connector:

[0022] The rear end of the support sleeve is provided with a cylindrical crimping section for the protruding part of the metal armor tube to overlap, and the protruding part is fixed on the crimping section through a crimping sleeve sleeved on the crimping section, so that the metal armor tube and the support sleeve remain in conductive contact.

[0023] Beneficial effect: It is beneficial to achieve reliable conductive contact between the metal armor tube and the support sleeve.

[0024] Technical solution 5 obtained by improving on the basis of any one of technical solutions 2 to 4 of the fiber optic plug connector:

[0025] The support sleeve is provided with a threaded hole, and the rear end of the conductive part is provided with a fixing hole. The conductive part is fixedly connected through a screw passing through the fixing hole and threadedly connected to the threaded hole, so as to realize the conductive connection between the conductive part and the support sleeve.

[0026] Beneficial effect: The connection structure between the support sleeve and the conductive part is simple, convenient for design and processing, and has good connection stability.

[0027] Technical solution 6 obtained by improving on the basis of technical solution 5 of the fiber optic plug connector:

[0028] The threaded hole is a counterbore.

[0029] Beneficial effect: It is beneficial to increase the contact area between the rear end of the conductive part and the support sleeve, thereby increasing the conductive connection stability between the conductive part and the support sleeve.

[0030] Technical solution 7 obtained by improving on the basis of any one of technical solutions 2 to 4 of the fiber optic plug connector:

[0031] The rear end of the conductive member is provided with a C-shaped spring claw, and the support sleeve is provided with a C-shaped groove. The C-shaped groove is adapted to the C-shaped spring claw, and the C-shaped spring claw is tightly fixed on the bottom of the C-shaped groove to achieve conductive connection between the conductive member and the support sleeve.

[0032] Beneficial effect: It facilitates the conductive connection between the conductive part and the supporting sleeve.

[0033] Technical solution 8 obtained by improving any one of technical solutions 2 to 4 of the optical fiber plug connector:

[0034] Two elastic arms are provided at the rear end of the conductive member, one end of the two elastic arms is fixed and the other end is arranged at intervals to form an opening, and the two elastic arms are provided with hooks close to each other at the opening position, and a groove is provided on the support sleeve, and the groove is adapted to the two elastic arms. The two elastic arms are sleeved on the groove, and the hook is hooked and matched with the bottom of the groove to realize the conductive connection between the conductive member and the support sleeve.

[0035] Beneficial effect: It facilitates the conductive connection between the conductive part and the supporting sleeve.

[0036] Technical solution 9 obtained by improving any one of technical solutions 2 to 4 of the optical fiber plug connector:

[0037] The conductive member is an elastic member with an overhanging front end, which makes it elastic. The front end and the rear end of the conductive member are staggered in a direction perpendicular to the plugging direction of the optical fiber plug connector. The front end of the conductive member is arranged away from the center line of the optical fiber plug connector, and the rear end is arranged close to the center line of the optical fiber plug connector, so that the front end of the conductive member is in elastic top pressure contact with the chassis where the adapter socket is installed.

[0038] Beneficial effect: It is helpful to improve the stability of conductive contact between the conductive part and the chassis.

[0039] Technical solution 10 is improved on the basis of technical solution 9 of the optical fiber plug connector:

[0040] A conductive protrusion is provided at the front end of the conductive member, and the conductive protrusion is used to protrude toward the chassis. The conductive protrusion is in elastic pressing contact with the chassis on which the adapter socket is installed, so as to achieve elastic pressing contact between the front end of the conductive member and the chassis on which the adapter socket is installed.

[0041] Beneficial effect: The conductive protrusion is helpful to increase the elastic force exerted by the conductive member on the chassis, which is helpful to further improve the stability of the conductive contact between the conductive member and the chassis.

[0042] Technical solution 11 is improved on the basis of technical solution 9 of the optical fiber plug connector:

[0043] The conductive protrusion is in the shape of an arc, a circular ring or an inverted triangle, and is formed by bending the front end of the conductive member;

[0044] Alternatively, the conductive protrusion is spherical.

[0045] Beneficial effects: The conductive protrusion has a simple structure and is easy to design and process.

[0046] Technical solution 12 is improved on the basis of technical solution 1 of the optical fiber plug connector:

[0047] The conductive member is a rod or sheet extending in the front-to-back direction, the rear end of the conductive member is used for direct conductive contact with the metal armor tube, and the front end forms a cantilevered end, which is used for direct conductive contact with the chassis, so that the static charge on the metal armor tube is introduced into the chassis through the conductive member.

[0048] Beneficial effect: Both ends of the conductive part are in conductive contact with the metal armor tube and the chassis respectively, and no other parts are required for transition connection in the middle, so that the overall structure of the optical fiber plug connector is simple and the design and processing are convenient.

[0049] Technical solution 13 is improved on the basis of technical solution 12 of the optical fiber plug connector:

[0050] The conductive member is an elastic member with an overhanging front end, which makes it elastic. The front end and the rear end of the conductive member are staggered in a direction perpendicular to the plugging direction of the optical fiber plug connector. The front end of the conductive member is arranged away from the center line of the optical fiber plug connector, and the rear end is arranged close to the center line of the optical fiber plug connector, so that the front end of the conductive member is in elastic top pressure contact with the chassis where the adapter socket is installed.

[0051] Beneficial effect: It is helpful to improve the stability of conductive contact between the conductive part and the chassis.

[0052] Technical solution 14 is improved on the basis of technical solution 13 of the optical fiber plug connector:

[0053] A conductive protrusion is provided at the front end of the conductive member, and the conductive protrusion is used to protrude toward the chassis. The conductive protrusion is in elastic pressing contact with the chassis on which the adapter socket is installed, so as to achieve elastic pressing contact between the front end of the conductive member and the chassis on which the adapter socket is installed.

[0054] Beneficial effect: The conductive protrusion is helpful to increase the elastic force exerted by the conductive member on the chassis, which is helpful to further improve the stability of the conductive contact between the conductive member and the chassis.

[0055] Technical solution 15 is improved on the basis of technical solution 14 of the optical fiber plug connector:

[0056] The conductive protrusion is in an arc shape, a circular ring shape or an inverted triangle shape, and the conductive protrusion is formed by bending the front end of the conductive member;

[0057] Alternatively, the conductive protrusion is spherical.

[0058] Beneficial effects: The conductive protrusion has a simple structure and is convenient for design and processing.

[0059] Technical solution 16 obtained by improving on any one of technical solutions 12 to 15 of the fiber optic plug connector:

[0060] A bonding sleeve is provided inside the plug housing. The bonding sleeve allows the rear end of the conductive member and the front end of the metal armor tube inside the optical cable to extend therein, so that the metal armor tube is in direct conductive contact with the conductive member, and the metal armor tube and the conductive member are fixed in the bonding sleeve by the colloid formed after the glue liquid poured into the bonding sleeve solidifies.

[0061] Beneficial effects: It is convenient to achieve stable conductive contact between the conductive member and the metal armor tube.

[0062] Technical solution 17 obtained by improving on technical solution 1 of the fiber optic plug connector:

[0063] The plug housing includes an outer housing and an inner sleeve. The inner sleeve is inserted into the outer housing, and there is a gap between the front end of the inner sleeve and the outer housing for the mating socket to be inserted;

[0064] A support sleeve is provided inside the inner sleeve. The support sleeve supports the contact member, and a core through-hole is provided on the support sleeve for the core of the optical cable to pass through and be connected to the contact member;

[0065] The support sleeve constitutes the conductive member. The front end of the support sleeve is in plug-in fit with the inner sleeve, so that the front end of the conductive member is indirectly conductively connected to the chassis where the mating socket is installed through the inner sleeve. The rear end of the support sleeve is used for direct conductive contact with the metal armor tube, so that the static charge on the metal armor tube is conducted into the chassis through the conductive member.

[0066] Beneficial effects: Utilize the components of the fiber optic plug connector itself to achieve the conductive connection between the metal armor tube and the chassis. Only need to make adaptive improvements to the support sleeve and the inner sleeve on the basis of the existing fiber optic plug connector, which is convenient for design and processing and is beneficial to simplifying the overall structure of the fiber optic plug connector.

[0067] Technical solution 18 obtained by improving on technical solution 17 of the fiber optic plug connector:

[0068] The rear end of the core through-hole is a stepped hole, and the stepped hole has a rear-facing stepped surface. The large-diameter section of the stepped hole is used for plug-in fit with the metal armor tube to make the support sleeve and the metal armor tube conductively contact;

[0069] A crimping section is provided at the rear end of the support sleeve. When the metal armored tube is inserted and fitted with the stepped hole, a crimping sleeve sleeved on the crimping section is used to crimp and fix the metal armored tube and the crimping section, so that the metal armored tube and the support sleeve maintain electrical contact.

[0070] Technical solution 19 obtained by improving on the basis of technical solution 17 of the fiber optic plug connector:

[0071] The rear end of the support sleeve is provided with a cylindrical crimping section for the protruding part of the metal armored tube to overlap, and a crimping sleeve sleeved on the crimping section is used to fix the protruding part on the crimping section, so that the metal armored tube and the support sleeve maintain electrical contact.

[0072] Beneficial effects: It is beneficial to realize reliable electrical contact between the metal armored tube and the support sleeve.

[0073] To achieve the above object, technical solution 1 of the connector assembly of the present invention is:

[0074] The connector assembly includes:

[0075] An optical cable, including a metal armored tube and a cable core, and the cable core is arranged inside the metal armored tube;

[0076] A fiber optic plug connector, and the optical cable is connected to the rear end of the fiber optic plug connector;

[0077] The fiber optic plug connector includes:

[0078] A plug housing, inside which there is a contact. The front end of the plug housing is a plug-in end for connecting with a mating socket. The rear end of the plug housing is provided with an optical cable through hole for the optical cable to pass through and connect with the contact;

[0079] A conductive member is arranged inside the plug housing. The front end of the conductive member is used for direct electrical contact or indirect electrical connection with the chassis where the mating socket is installed. The rear end of the conductive member is in direct electrical contact or indirect electrical connection with the metal armored tube, so that the static charge on the metal armored tube is introduced into the chassis through the conductive member to realize the grounding of the metal armored tube.

[0080] The beneficial effects of the present invention are as follows: When in use, the optical cable is fixed to the rear end of the fiber optic plug connector. After the fiber optic plug connector is connected to the mating socket, the front end of the conductive member is in direct contact with the chassis on which the mating socket is installed, or the front end of the conductive member is conductively connected to the chassis on which the mating socket is installed indirectly through other conductive components, so as to achieve conduction between the conductive member and the chassis; the rear end of the conductive member is in direct conductive contact with the metal armor tube, or the rear end of the conductive member is conductively connected to the metal armor tube indirectly through other conductive components, so as to achieve conduction between the conductive member and the metal armor tube inside the optical cable, enabling the static charges on the metal armor tube to be introduced into the chassis through the conductive member and finally introduced into the ground through the chassis, thus achieving grounding of the metal armor tube in the optical cable.

[0081] Connector assembly technical solution 2 obtained by improving on the basis of connector assembly technical solution 1:

[0082] A support sleeve is provided inside the plug housing. The support sleeve supports the contact member, and a core through-hole is provided on the support sleeve for the core of the optical cable to pass through and be connected to the contact member;

[0083] The support sleeve is a conductive support sleeve, and the support sleeve is conductively connected to the metal armor tube;

[0084] The conductive member is a rod or sheet extending in the front-rear direction. The rear end of the conductive member is conductively connected to the support sleeve, so that the rear end of the conductive member is conductively connected to the metal armor tube indirectly through the support sleeve. The front end of the conductive member forms a protruding end, and the protruding end is used for direct conductive contact with the chassis, so that the static charges on the metal armor tube are introduced into the chassis through the support sleeve and the conductive member, realizing grounding.

[0085] Beneficial effects: The conductive connection between the conductive member and the metal armor tube is realized by using the support sleeve of the fiber optic plug connector itself. It only needs to make adaptive improvements to the support sleeve on the basis of the existing fiber optic plug connector, which is convenient for design and processing and is conducive to simplifying the overall structure of the fiber optic plug connector.

[0086] Connector assembly technical solution 3 obtained by improving on the basis of connector assembly technical solution 2:

[0087] The rear end of the core through-hole is a stepped hole, and the stepped hole has a rear-facing stepped surface. The large-diameter section of the stepped hole is inserted and matched with the metal armor tube, so that the support sleeve and the metal armor tube are in conductive contact;

[0088] A crimping section is provided at the rear end of the support sleeve. The metal armor tube is crimped and fixed to the crimping section through a crimping sleeve sleeved on the crimping section, so that the metal armor tube and the support sleeve remain in conductive contact.

[0089] Beneficial effects: It is beneficial to achieve reliable conductive contact between the metal armor tube and the support sleeve.

[0090] Technical solution 4 of the connector assembly, which is improved on the basis of technical solution 2 of the connector assembly:

[0091] A cylindrical crimping section is provided at the rear end of the support sleeve. An extending portion is provided at the front end of the metal armor tube. The extending portion overlaps on the crimping section, and the extending portion is fixed on the crimping section by a crimping sleeve sleeved on the crimping section, so that the metal armor tube and the support sleeve maintain electrical contact.

[0092] Beneficial effect: It is beneficial to realize reliable electrical contact between the metal armor tube and the support sleeve.

[0093] Technical solution 5 of the connector assembly, which is improved on the basis of any one of technical solutions 2 to 4 of the connector assembly:

[0094] A threaded hole is provided on the support sleeve, and a fixing hole is provided at the rear end of the conductive member. The conductive member is fixedly connected by a screw passing through the fixing hole and threadedly connected to the threaded hole, so as to realize the electrical connection between the conductive member and the support sleeve.

[0095] Beneficial effect: The connection structure between the support sleeve and the conductive member is simple, convenient for design and processing, and has good connection stability.

[0096] Technical solution 6 of the connector assembly, which is improved on the basis of technical solution 5 of the connector assembly:

[0097] The threaded hole is a counterbore.

[0098] Beneficial effect: It is beneficial to increase the contact area between the rear end of the conductive member and the support sleeve, thereby increasing the electrical connection stability between the conductive member and the support sleeve.

[0099] Technical solution 7 of the connector assembly, which is improved on the basis of any one of technical solutions 2 to 4 of the connector assembly:

[0100] A C-shaped spring claw is provided at the rear end of the conductive member, and a C-shaped groove is provided on the support sleeve. The C-shaped groove is adapted to the C-shaped spring claw, and the C-shaped spring claw is tightly held and fixed on the bottom of the C-shaped groove to realize the electrical connection between the conductive member and the support sleeve.

[0101] Beneficial effect: It is convenient for the electrical connection between the conductive member and the support sleeve.

[0102] Technical solution 8 of the connector assembly, which is improved on the basis of any one of technical solutions 2 to 4 of the connector assembly:

[0103] Two elastic arms are provided at the rear end of the conductive member, one end of the two elastic arms is fixed and the other end is arranged at intervals to form an opening, and the two elastic arms are provided with hooks close to each other at the opening position, and a groove is provided on the support sleeve, and the groove is adapted to the two elastic arms. The two elastic arms are sleeved on the groove, and the hook is hooked and matched with the bottom of the groove to realize the conductive connection between the conductive member and the support sleeve.

[0104] Beneficial effect: It facilitates the conductive connection between the conductive part and the supporting sleeve.

[0105] Technical solution 9 of the connector assembly obtained by improving any one of the technical solutions 1 to 3 of the connector assembly:

[0106] The conductive member is an elastic member with an overhanging front end, which makes it elastic. The front end and the rear end of the conductive member are staggered in a direction perpendicular to the plugging direction of the optical fiber plug connector. The front end of the conductive member is arranged away from the center line of the optical fiber plug connector, and the rear end is arranged close to the center line of the optical fiber plug connector, so that the front end of the conductive member is in elastic top pressure contact with the chassis on which the adapter socket is installed.

[0107] Beneficial effect: It is helpful to improve the stability of conductive contact between the conductive part and the chassis.

[0108] Technical solution 10 of the connector assembly is improved on the basis of technical solution 9 of the connector assembly:

[0109] A conductive protrusion is provided at the front end of the conductive member, and the conductive protrusion is used to protrude toward the chassis. The conductive protrusion is in elastic pressing contact with the chassis on which the adapter socket is installed, so as to achieve elastic pressing contact between the front end of the conductive member and the chassis on which the adapter socket is installed.

[0110] Beneficial effect: The conductive protrusion is helpful to increase the elastic force exerted by the conductive member on the chassis, which is helpful to further improve the stability of the conductive contact between the conductive member and the chassis.

[0111] Technical solution 11 of the connector assembly is improved on the basis of technical solution 10 of the connector assembly:

[0112] The conductive protrusion is in the shape of an arc, a circular ring or an inverted triangle, and is formed by bending the front end of the conductive member;

[0113] Alternatively, the conductive protrusion is spherical.

[0114] Beneficial effects: The conductive protrusion has a simple structure and is easy to design and process.

[0115] Technical solution 12 of the connector assembly is improved on the basis of technical solution 1 of the connector assembly:

[0116] The conductive member is a rod or sheet extending in the front-to-back direction, the rear end of the conductive member is in direct conductive contact with the metal armor tube, and the front end forms a cantilevered end, which is used to make direct conductive contact with the chassis, so that the static charge on the metal armor tube is introduced into the chassis through the conductive member.

[0117] Beneficial effect: Both ends of the conductive part are in conductive contact with the metal armor tube and the chassis respectively, and no other parts are required for transition connection in the middle, so that the overall structure of the optical fiber plug connector is simple and the design and processing are convenient.

[0118] Technical solution 13 of the connector assembly is improved on the basis of technical solution 12 of the connector assembly:

[0119] The conductive member is an elastic member with an overhanging front end, which makes it elastic. The front end and the rear end of the conductive member are staggered in a direction perpendicular to the plugging direction of the optical fiber plug connector. The front end of the conductive member is arranged away from the center line of the optical fiber plug connector, and the rear end is arranged close to the center line of the optical fiber plug connector, so that the front end of the conductive member is in elastic top pressure contact with the chassis on which the adapter socket is installed.

[0120] Beneficial effect: It is helpful to improve the stability of conductive contact between the conductive part and the chassis.

[0121] Technical solution 14 of the connector assembly is improved on the basis of technical solution 12 of the connector assembly:

[0122] A conductive protrusion is provided at the front end of the conductive member, and the conductive protrusion is used to protrude toward the chassis. The conductive protrusion is in elastic pressing contact with the chassis on which the adapter socket is installed, so as to achieve elastic pressing contact between the front end of the conductive member and the chassis on which the adapter socket is installed.

[0123] Beneficial effect: The conductive protrusion is helpful to increase the elastic force exerted by the conductive member on the chassis, which is helpful to further improve the stability of the conductive contact between the conductive member and the chassis.

[0124] Technical solution 15 of the connector assembly is improved on the basis of technical solution 14 of the connector assembly:

[0125] The conductive protrusion is in the shape of an arc, a circular ring or an inverted triangle, and is formed by bending the front end of the conductive member;

[0126] Alternatively, the conductive protrusion is spherical.

[0127] Beneficial effects: The conductive protrusion has a simple structure and is easy to design and process.

[0128] Technical solution 16 of the connector assembly obtained by improving any one of the technical solutions 12 to 15 of the connector assembly:

[0129] A bonding sleeve is provided inside the plug housing. The rear end of the conductive member and the front end of the metal armor tube inside the optical cable extend into the bonding sleeve, so that the metal armor tube is in direct conductive contact with the conductive member, and the metal armor tube and the conductive member are fixed in the bonding sleeve by the colloid formed after the glue poured into the bonding sleeve solidifies.

[0130] Beneficial effect: It is convenient to realize stable conductive contact between the conductive member and the metal armor tube.

[0131] Connector assembly technical solution 17 obtained by improving on the basis of connector assembly technical solution 1:

[0132] The plug housing includes an outer housing and an inner sleeve. The inner sleeve is inserted into the outer housing, and there is a gap between the front end of the inner sleeve and the outer housing for the mating socket to be inserted;

[0133] A support sleeve is provided inside the inner sleeve. The support sleeve supports the contact member, and a cable core through-hole is provided on the support sleeve for the cable core of the optical cable to pass through and be connected to the contact member;

[0134] The support sleeve constitutes the conductive member. The front end of the support sleeve is in plug-in fit with the inner sleeve, so that the front end of the conductive member is indirectly conductively connected to the chassis where the mating socket is installed through the inner sleeve. The rear end of the support sleeve is in direct conductive contact with the metal armor tube, so that the static charge on the metal armor tube is introduced into the chassis through the conductive member.

[0135] Beneficial effect: Utilize the components of the fiber optic plug connector itself to realize the conductive connection between the metal armor tube and the chassis. Only need to make adaptive improvements to the support sleeve and the inner sleeve on the basis of the existing fiber optic plug connector, which is convenient for design and processing and is beneficial to simplifying the overall structure of the fiber optic plug connector.

[0136] Connector assembly technical solution 18 obtained by improving on the basis of connector assembly technical solution 17:

[0137] The rear end of the cable core through-hole is a stepped hole with a stepped surface facing backward. The large-diameter section of the stepped hole is in plug-in fit with the metal armor tube, so that the support sleeve and the metal armor tube are in conductive contact;

[0138] A crimping section is provided at the rear end of the support sleeve. The metal armor tube and the crimping section are crimped and fixed by a crimping sleeve sleeved on the crimping section, so that the metal armor tube and the support sleeve remain in conductive contact.

[0139] Connector assembly technical solution 19 obtained by improving on the basis of connector assembly technical solution 17:

[0140] The rear end of the support sleeve is provided with a cylindrical crimping section. The front end of the metal armor tube has an extending part, which is lapped on the crimping section, and the extending part is fixed on the crimping section through a crimping sleeve sleeved on the crimping section, so that the metal armor tube and the support sleeve maintain electrical contact.

[0141] Advantageous effects: It is beneficial to achieve reliable electrical contact between the metal armor tube and the support sleeve. Description of the drawings

[0142] Figure 1 Schematic structural diagram of Specific Embodiment 1 of the optical fiber plug connector of the present invention;

[0143] Figure 2 is Figure 1 exploded structural diagram;

[0144] Figure 3 is Figure 1 cross-sectional view of the front view;

[0145] Figure 4 is Figure 3 structural diagram when the inner core of the plug is removed;

[0146] Figure 5 is Figure 2 connection structural diagram of the conductive part, optical cable, support sleeve and crimping sleeve in;

[0147] Figure 6 is Figure 5 cross-sectional view of the front view;

[0148] Figure 7 is Figure 2 exploded structural diagram of the support sleeve and the conductive part in;

[0149] Figure 8 is Figure 2 internal structural diagram of the inner sleeve in;

[0150] Figure 9 is Figure 1 state diagram when the optical fiber plug connector is adaptively connected to the mating socket on the chassis;

[0151] Figure 10 is Figure 9 cross-sectional view of the front view;

[0152] Figure 11 is Figure 10 conductive connection diagram between the optical cable and the chassis in;

[0153] Figure 12 connection structural diagram of the conductive part and the support sleeve in Specific Embodiment 2 of the optical fiber plug connector of the present invention;

[0154] Figure 13 Schematic diagram of the connection structure between the conductive member and the support sleeve in the specific embodiment 3 of the fiber optic plug connector of the present invention;

[0155] Figure 14 Schematic diagram of the front end structure of the conductive member in the specific embodiment 4 of the fiber optic plug connector of the present invention;

[0156] Figure 15 Schematic diagram of the front end structure of the conductive member in the specific embodiment 5 of the fiber optic plug connector of the present invention;

[0157] Figure 16 Schematic diagram of the front end structure of the conductive member in the specific embodiment 6 of the fiber optic plug connector of the present invention;

[0158] Figure 17 Schematic diagram of the connection structure between the optical cable and the support sleeve in the specific embodiment 8 of the fiber optic plug connector of the present invention;

[0159] Figure 18 is Figure 17 Cross-sectional view of the front view of;

[0160] Figure 19 is Figure 17 Schematic diagram of the structure when the crimping sleeve is removed;

[0161] Figure 20 is Figure 19 Exploded structure diagram of;

[0162] Figure 21 Schematic diagram of the structure of the specific embodiment 11 of the fiber optic plug connector of the present invention;

[0163] Figure 22 is Figure 21 Exploded structure diagram of;

[0164] Figure 23 is Figure 21 Cross-sectional view of the front view of;

[0165] Figure 24 is Figure 22 Exploded structure diagram of the bonding structure in;

[0166] Figure 25 is Figure 22 Exploded structure diagram of the optical cable, bonding structure and conductive member in;

[0167] Figure 26 is Figure 22 Schematic diagram of the bonding sleeve structure in;

[0168] Figure 27 is Figure 23 Schematic diagram of the inner sleeve structure in;

[0169] Figure 28 is Figure 22 a state diagram when the fiber optic plug connector in

[0170] Figure 29 is Figure 28 a sectional view of the front view of

[0171] Figure 30 a schematic structural view of Specific Embodiment 12 of the fiber optic plug connector of the present invention;

[0172] Figure 31 is Figure 30 a schematic exploded view of

[0173] Figure 32 is Figure 30 a sectional view of the front view of

[0174] Figure 33 is Figure 30 a state diagram when the fiber optic plug connector in

[0175] Figure 34 is Figure 33 a sectional view of the front view of.

[0176] In the figure: 1 - fiber optic plug connector; 2 - chassis; 3 - adapter socket; 31 - flange; 32 - bolt; 4 - optical cable; 41 - metal armor tube; 42 - optical cable outer sheath; 10 - outer housing; 101 - tapered hole section; 102 - positioning ring groove; 11 - inner sleeve; 111 - anti-rotation groove; 12 - positioning spring; 13 - O-ring; 14 - rubber pad; 15 - support sleeve; 151 - step surface; 152 - larger outer diameter section; 153 - smaller outer diameter section; 154 - threaded hole; 155 - anti-rotation block; 16 - crimping sleeve; 17 - conductive sheet; 171 - fixing hole; 172 - arc-shaped end; 18 - screw; 19 - spring claw; 20 - rubber ring; 21 - nut; 22 - anti-bending spring; 221 - extended section; 1700 - conductive sheet; 17001 - C-shaped spring claw; 1500 - support sleeve; 15001 - C-shaped groove; 1701 - conductive sheet; 17011 - U-shaped structure; 1501 - support sleeve; 15011 - groove; 1702 - conductive sheet; 17021 - circular end; 1703 - conductive sheet; 17031 - inverted triangular end; 1704 - conductive sheet; 17041 - spherical end; 43 - extended part; 5 - bonding sleeve; 51 - extended section; 52 - anti-rotation groove; 40 - optical cable; 401 - metal armor tube; 402 - optical cable outer sheath; 403 - extended part; 6 - connecting piece; 7 - colloid; 110 - inner sleeve; 1101 - spring claw; 1102 - anti-rotation block; 1103 - inclined surface; 100 - outer housing; 1001 - tapered hole section; 170 - conductive sheet; 1100 - inner sleeve; 1111 - contact mating surface; 150 - support sleeve; 1501 - step surface; 1502 - larger outer diameter section; 1503 - smaller outer diameter section; 1504 - anti-rotation block; 160 - crimping sleeve; 200 - fiber optic plug. Detailed implementation mode

[0177] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Generally, the components of the embodiments of the present invention described and shown in the accompanying drawings herein can be arranged and designed in various different configurations.

[0178] Therefore, the detailed description of the embodiments of the present invention provided in the accompanying drawings below is not intended to limit the scope of the claimed present invention, but only represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention.

[0179] It should be noted that relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0180] The features and performance of the present invention will be further described in detail below in conjunction with embodiments.

[0181] Specific Embodiment 1 of the fiber optic plug connector of the present invention:

[0182] As Figures 1 to 4 shown, the fiber optic plug connector includes a plug housing and a plug inner core disposed inside the plug housing, and the plug inner core includes a contact. The front end of the plug housing is a plug-in end for connecting with a mating socket; the rear end of the plug housing is provided with an optical cable through hole for the optical cable 4 to penetrate and connect with the contact.

[0183] As Figures 2 to 4 shown, the plug housing includes an outer housing 10 and an inner sleeve 11. The inner sleeve 11 is inserted into the outer housing 10. There is a gap between the front end of the inner sleeve 11 and the outer housing 10 for the socket housing of the mating socket to be inserted. A positioning spring 12 is provided between the outer housing 10 and the inner sleeve 11. The positioning spring 12 is a ring-shaped sheet structure with an opening. The sheet structure is provided with a plurality of elastic pieces that can be deformed in a direction perpendicular to the plugging direction. A positioning ring groove 102 is provided inside the outer housing 10. The positioning spring 12 is sleeved and fixed on the inner sleeve 11 through the opening and is inserted into the positioning ring groove 102 along with the inner sleeve 11 to achieve axial positioning between the outer housing 10 and the inner sleeve 11, enabling the outer housing 10 and the inner sleeve 11 to rotate relative to each other along the axis and ensuring that the inner sleeve 11 does not fall out of the outer housing 10.

[0184] As Figure 3 and Figure 4 shown, an O-ring 13 is also provided between the outer housing 10 and the inner sleeve 11. The O-ring 13 plays a damping role to prevent the outer housing 10 and the inner sleeve 11 from easily rotating relative to each other along the axis. A sealing ring groove is provided at the front end of the inner sleeve 11, and a rubber pad 14 is sleeved and fixed in the sealing ring groove. When the fiber optic plug connector is mated and connected with the mating socket, the rubber pad 14 plays a role in sealing the connection between the fiber optic plug connector and the mating socket.

[0185] As shown Figures 2 to 4 in the figure, the inner core of the plug further includes a support sleeve 15 and a crimping sleeve 16. The support sleeve 16 is inserted inside the inner sleeve 11. The support sleeve 15 is a conductive support sleeve. The support sleeve 15 supports and assembles an optical fiber plug. The above-mentioned contact member is provided inside the optical fiber plug. A cable core perforation is provided on the support sleeve 15 for the cable core of the optical cable to pass through and be connected to the contact member. The rear end of the cable core perforation is a stepped hole, and the stepped hole has a rear-facing stepped surface 151. When fixing the optical cable 4 on the optical fiber plug connector, the cable core of the optical cable 4 passes through the cable core perforation. The metal armor tube 41 of the optical cable 4 is inserted and matched with the stepped hole, and the front end of the metal armor tube 41 is in blocking cooperation with the stepped surface 151, so that the metal armor tube 41 of the optical cable 4 is in conductive contact with the support sleeve 15. At the same time, the rear end face of the support sleeve 15 is in blocking cooperation with the cable outer sheath 42 of the optical cable 4.

[0186] It should be noted here that the support sleeve here can play a conductive role. It is not only used to realize the conductive connection between the armor wire and the conductive member, but also plays the supporting role it itself has, and is used to fixedly install the optical fiber plug.

[0187] As shown Figure 6 in the figure, the support sleeve 15 includes a large-diameter section 152 and a small-diameter section 153. The small-diameter section 153 is arranged at the rear side of the large-diameter section 152. The small-diameter section 153 constitutes a corresponding crimping section. The crimping sleeve 16 is sleeved on the small-diameter section 153 of the support sleeve 15, and the front end of the crimping sleeve 16 is in blocking cooperation with the rear end face of the large-diameter section 152 of the support sleeve 15. By crimping the crimping sleeve 16, the stable fixation of the metal armor tube 41 and the cable outer sheath 42 on the support sleeve 15 is realized, and the inner core of the optical cable 4 has a tensile resistance effect. As shown Figures 2 to 4 in the figure, the inner core of the plug further includes a conductive sheet 17. The conductive sheet 17 is used as the conductive member in this embodiment. As shown Figure 5 and Figure 7 in the figure, the conductive sheet 17 extends in the front-rear direction. A threaded hole 154 is provided on the above-mentioned support sleeve 15. The threaded hole 154 is a counterbore. A fixing hole 171 is provided at the rear end of the conductive sheet 17. A screw 18 passes through the fixing hole 171 and is threadedly connected to the threaded hole 154 to realize the conductive connection between the conductive sheet 17 and the support sleeve 15, so that the rear end of the conductive sheet 17 is indirectly conductively connected to the metal armor tube 41 through the support sleeve 15.

[0188] In this embodiment, the cross-section of the fiber optic plug connector is circular. The insertion direction of the fiber optic plug connector is the axial direction of the fiber optic plug connector, and the direction perpendicular to the insertion direction of the fiber optic plug connector is the radial direction of the fiber optic plug connector. When the rear end of the conductive sheet 17 is electrically connected to the support sleeve 15, the front end of the conductive sheet 17 forms an overhanging end. The conductive sheet 17 is an elastic member with elastic deformation due to the front end overhanging, and the front end of the conductive sheet 17 can elastically deform along the radial direction of the fiber optic plug connector.

[0189] The front end and the rear end of the above-mentioned conductive sheet 17 are arranged offset in the radial direction of the fiber optic plug connector, and the front end is arranged away from the axis of the fiber optic plug connector, and the rear end is arranged close to the axis of the fiber optic plug connector.

[0190] In addition, the front end of the above-mentioned conductive sheet 17 is a circular arc end 172, and the circular arc end 172 protrudes away from the center line of the fiber optic plug connector. The circular arc end 172 is formed by bending the front end of the conductive sheet 17, and the circular arc end 172 constitutes a conductive protrusion. When the fiber optic plug connector is adaptively connected to the adaptor socket, the circular arc end 172 is in direct elastic pressing contact with the chassis of the adaptor socket installed, so as to achieve direct electrical contact between the front end of the conductive member and the chassis of the adaptor socket installed. The circular arc end 172 can prevent the inner core of the plug from scratching the surface of the adaptor socket during disassembly and assembly.

[0191] As Figure 8 shown, the above-mentioned inner sleeve 11 is provided with an anti-rotation groove 111. As Figure 2 and Figure 7 shown, the support sleeve 15 is provided with an anti-rotation block 155. The anti-rotation block 155 and the anti-rotation groove 111 are in circumferential blocking cooperation to prevent the inner core of the plug from rotating along the axis of the plug housing after the fiber optic plug connector is adaptively connected to the adaptor socket.

[0192] As Figures 2 to 4 shown, the fiber optic plug connector further includes a spring claw 19 and a rubber ring 20. The rubber ring 20 is sleeved on the rear part of the inner sleeve 11 and is wrapped inside the spring claw 19. The rear part of the outer housing 10 has a tapered hole section 101, and the front aperture of the tapered hole section 101 is larger than the rear aperture. When the outer housing 10 and the inner sleeve 11 axially float relative to each other, the hole wall of the tapered hole section 101 squeezes the rear part of the spring claw 19, so that the rubber ring 20 tightly holds the optical cable 4, thereby achieving the effect of internal sealing.

[0193] As Figures 1 to 4As shown, the rear of the optical fiber plug connector is also provided with an anti-bending spring 22, which is used to be sleeved on the outside of the optical cable 4 to prevent the optical cable 4 at the rear of the optical fiber plug connector from excessive bending. The front end of the anti-bending spring 22 has an extension section 221, which protrudes radially outward of the anti-bending spring 22. The rear of the outer shell 10 is threadedly connected with a nut 21, which has an inner flange. The extension section 221 is clamped between the rear end face of the outer shell 10 and the inner flange of the nut 21, so as to fix the anti-bending spring 22.

[0194] like Figures 9 to 11 As shown, the rear end of the conductive sheet 17 is indirectly conductively connected to the metal armor tube 41 through the support sleeve 15. After the plug-in end of the optical fiber plug connector is plugged into the chassis 2 on which the adapter socket is installed, the arc-shaped end 172 of the conductive sheet 17 is in direct elastic top-pressing contact with the chassis 2. When affected by lightning disasters and strong electricity, the static charge generated by the induction of the metal armor tube 41 in the optical cable 4 will be successively introduced into the chassis 2 through the support sleeve 15 and the conductive sheet 17, and then introduced into the ground through the chassis 2, thereby achieving the grounding of the metal armor tube 41, and finally achieving the grounding of the metal armor tube in the optical cable.

[0195] Specific embodiment 2 of the optical fiber plug connector of the present invention:

[0196] The main difference between the optical fiber plug connector and the specific embodiment 1 is that the conductive member and the support sleeve of the specific embodiment 1 of the optical fiber plug connector are fixedly connected by screws. Figure 12 As shown, in this embodiment, a C-shaped claw 17001 is provided at the rear end of the conductive member 1700, and a C-shaped groove 15001 is provided on the outer peripheral surface of the support sleeve 1500. The C-shaped groove 15001 is adapted to the C-shaped claw 17001, and the C-shaped claw 17001 is tightly fixed on the bottom of the C-shaped groove 15001 to realize the conductive connection between the conductive member 1700 and the support sleeve 1500.

[0197] Specific embodiment 3 of the optical fiber plug connector of the present invention:

[0198] The main difference between the optical fiber plug connector and the specific embodiment 1 is that the conductive member and the support sleeve of the specific embodiment 1 of the optical fiber plug connector are fixedly connected by screws. Figure 13 As shown, in this embodiment, two elastic arms are provided at the rear end of the conductive member 1701, one end of the two elastic arms is fixed, and the other end is arranged at intervals to form a U-shaped structure 17011 with an opening, and the two elastic arms are provided with hooks close to each other at the opening position, and a groove 15011 is provided on the outer peripheral surface of the support sleeve 1501, and the groove 15011 is adapted to the U-shaped structure 17011. The two elastic arms are sleeved on the groove 15011, and the two hooks are hooked and matched with the bottom of the groove 15011 to achieve the conductive connection between the conductive member 1701 and the support sleeve 1501.

[0199] Specific Embodiment 4 of the fiber optic plug connector of the present invention:

[0200] The main difference from Specific Embodiment 1 of the above fiber optic plug connector is that the front end of the conductive member in Specific Embodiment 1 of the above fiber optic plug connector is arc-shaped, and the arc shape is used for direct elastic conductive contact with the chassis. As Figure 14 shown, in this embodiment, the front end of the conductive member 1702 is a circular ring end 17021, and the circular ring end 17021 is formed by bending the front end of the conductive member 1702. The circular ring end 17021 constitutes a conductive protrusion for direct elastic conductive contact with the chassis.

[0201] Specific Embodiment 5 of the fiber optic plug connector of the present invention:

[0202] The main difference from Specific Embodiment 1 of the above fiber optic plug connector is that the front end of the conductive member in Specific Embodiment 1 of the above fiber optic plug connector is arc-shaped, and the arc shape is used for direct elastic conductive contact with the chassis. As Figure 15 shown, in this embodiment, the front end of the conductive member 1703 is an inverted triangular end 17031, and the inverted triangular end 17031 is formed by bending the front end of the conductive member 1703. The inverted triangular end 17031 constitutes a conductive protrusion for direct elastic conductive contact with the chassis.

[0203] Specific Embodiment 6 of the fiber optic plug connector of the present invention:

[0204] The main difference from Specific Embodiment 1 of the above fiber optic plug connector is that the front end of the conductive member in Specific Embodiment 1 of the above fiber optic plug connector is arc-shaped, and the arc shape is used for direct elastic conductive contact with the chassis. As Figure 16 shown, in this embodiment, the front end of the conductive member 1704 is a spherical end 17041, and the spherical end 17041 constitutes a conductive protrusion for direct elastic conductive contact with the chassis.

[0205] Specific Embodiment 7 of the fiber optic plug connector of the present invention:

[0206] The main difference from Specific Embodiment 1 of the above fiber optic plug connector is that the front end of the conductive member in Specific Embodiment 1 of the above fiber optic plug connector is arc-shaped, and the arc shape is used for direct elastic conductive contact with the chassis. In this embodiment, the front end of the conductive member is flat, and the flat shape is used for direct conductive contact with the chassis. At this time, the front end of the conductive member does not have a conductive protrusion.

[0207] Specific Embodiment 8 of the fiber optic plug connector of the present invention:

[0208] The main difference from the specific embodiment 1 of the above optical fiber plug connector is that: in the specific embodiment 1 of the above optical fiber plug connector, the rear end of the cable core perforation of the support sleeve 15 is a stepped hole with a rearward stepped surface 151. The metal armor tube 41 of the optical cable 4 is inserted into the stepped hole, and the front end of the metal armor tube 41 is in stop fit with the stepped surface 151 to achieve conductive contact between the metal armor tube 41 of the optical cable 4 and the support sleeve 15. As Figures 17 to 20 shown, in this embodiment, the smaller diameter section 153 of the outer diameter of the support sleeve 15 forms a cylindrical crimping section. The metal armor tube 41 of the optical cable 4 has an extended part 43, and the extended part 43 overlaps on the crimping section to achieve conductive contact between the metal armor tube 41 and the support sleeve 15. The optical cable 4 and the crimping section of the support sleeve 15 are fixed by a crimping sleeve 16, thereby achieving a stable conductive connection between the metal armor tube 41 and the support sleeve 15. It should be noted that in this embodiment, the cable sheath 42 of the optical cable 4 is still fixed on the support sleeve 15 by the crimping sleeve 16.

[0209] Specific embodiment 9 of the optical fiber plug connector of the present invention:

[0210] The main difference from the specific embodiment 1 of the above optical fiber plug connector is that: the conductive member in the above embodiment 1 is a conductive sheet, that is, the conductive member is sheet-shaped. The conductive member in this embodiment is a conductive rod, that is, the conductive member is rod-shaped.

[0211] Specific embodiment 10 of the optical fiber plug connector of the present invention:

[0212] The main difference from the specific embodiment 1 of the above optical fiber plug connector is that: the front end of the conductive member in the above embodiment can elastically deform in a direction perpendicular to the insertion direction of the optical fiber plug connector, and the front end of the conductive member is in elastic pressing contact with the chassis of the installation adapter socket to achieve direct conduction between the conductive member and the chassis. In this embodiment, the front end of the conductive member can elastically deform along the insertion direction of the optical fiber plug connector, and the front end of the conductive member is in elastic abutment with the rear end face of the chassis of the installation adapter socket to achieve direct conductive contact between the conductive member and the chassis.

[0213] Specific embodiment 11 of the optical fiber plug connector of the present invention:

[0214] The main difference from the specific embodiment 1 of the above optical fiber plug connector is that: the plug inner core in this embodiment does not include a support sleeve and a crimping sleeve. Specifically, as Figures 21 to 25As shown in the figure, the inner core of the plug includes an adhesive sleeve 5. When fixing the optical cable 40 on the optical fiber plug connector, the metal armor tube 401 of the optical cable 40 has an extended portion 403. Both the metal armor tube 401 and the outer sheath 402 of the optical cable 40 extend into the inner hole of the adhesive sleeve 5, and the conductive sheet 170 also extends into the inner hole of the adhesive sleeve 5. The extended portion 403 and the rear end of the conductive sheet 170 are pre-connected by a connector 6 first. The connector here can be a metal or non-metal binding strip, which should be able to fix the extended portion and the conductive sheet together, and pay attention not to separate the two. The closer they are combined, the better. Then, glue is poured into the adhesive sleeve 5. After the glue solidifies into a colloid 7, the conductive connection between the metal armor tube 401 and the conductive sheet 170 is realized. That is, in this embodiment, the metal armor tube 401 is in direct conductive contact and connection with the conductive sheet 170, rather than indirectly connecting through a support sleeve.

[0215] In addition, compared with the specific embodiment 1 of the above optical fiber plug connector, the optical fiber plug connector in this embodiment does not include a rubber sleeve, a separate spring claw, an anti-bending spring and a nut. As Figure 26 and Figure 27 shown, a rotation prevention groove 52 is provided on the outside of the adhesive sleeve 5 in this embodiment, and a rotation prevention block 1102 is provided at the rear of the inner sleeve 110. The rotation prevention block 1102 and the rotation prevention groove 52 are in circumferential blocking cooperation to prevent the inner core of the plug from rotating along the axis of the plug housing after the optical fiber plug connector is adaptively connected to the mating socket.

[0216] As Figure 23 shown, the rear part of the adhesive sleeve 5 has an extended section 51, and the extended section 51 extends out of the rear end of the outer housing 100 and supports the optical cable 40 to prevent the optical cable 40 at the rear end position of the optical fiber plug connector from being overly bent. As Figure 27 shown, four spring claws 1101 are provided at intervals along the circumference at the rear of the inner sleeve 110. The inner side surface of the spring claw 1101 is an inclined surface 1103. As Figure 23 shown, a tapered hole section 1001 is provided at the rear of the outer housing 100. The front aperture of the tapered hole section 1001 is larger than the rear aperture. When the outer housing 100 and the inner sleeve 110 axially float relative to each other, the hole wall of the tapered hole section 1001 squeezes the spring claws 1101, and the inclined surface 1103 of the spring claws 1101 squeezes the rear end of the adhesive sleeve 5, so as to achieve the effect of internal sealing.

[0217] As Figure 28 and Figure 29 shown, when the optical fiber plug connector is adaptively connected to the mating socket 3 on the chassis 2, the front end of the conductive sheet 170 is in direct conductive contact with the chassis 2. The static charges generated by induction in the metal armor tube 401 in the optical cable 40 will be conducted to the ground through the conductive sheet 170 and the chassis 2 in sequence, realizing the grounding of the metal armor tube in the optical cable 4.

[0218] In this embodiment, the front end of the conductive sheet is arc-shaped. Of course, in other embodiments, the front end of the conductive sheet can also adopt the circular ring shape, inverted triangle shape, spherical shape or flat plate shape in the specific embodiments 4-7 of the above optical fiber plug connector.

[0219] Specific embodiment 12 of the optical fiber plug connector of the present invention:

[0220] The main difference from the specific embodiment 1 of the above optical fiber plug connector is that, as Figures 30 to 32 shown, in this embodiment, the inner sleeve 1100 is a conductive inner sleeve, the support sleeve 150 is a conductive support sleeve, and the support sleeve 150 constitutes the conductive member in this embodiment. The static charge of the optical cable 4 is introduced into the chassis through the inner sleeve 1100 and the support sleeve 150, and finally introduced into the ground through the chassis.

[0221] Specifically, as Figure 32 and Figure 34 shown, the support sleeve 150 includes a large outer diameter section 1502 and a small outer diameter section 1503. The small outer diameter section 1503 is arranged at the rear side of the large outer diameter section 1502. The small outer diameter section 1503 serves as a crimping section for the crimping sleeve 160 to be sleeved and fixedly crimped. The fixing of the above optical cable 4 on the support sleeve 150 is the same as that in the specific embodiment 1 of the above optical fiber plug connector. The metal armor tube 41 is inserted into the stepped hole of the support sleeve 15, and the front end is in blocking cooperation with the step surface 1501 of the support sleeve 15 to achieve conductive contact between the metal armor tube 41 and the support sleeve 150. Then, the crimping sleeve 16 is sleeved on the small outer diameter section 1503 of the support sleeve 15, and the front end of the crimping sleeve 16 is in blocking cooperation with the rear end face of the large outer diameter section 1502 of the support sleeve 15. By crimping the crimping sleeve 16, conductive contact between the metal armor tube 41 and the support sleeve 15 is achieved. The support sleeve 150 is inserted and matched with the inner sleeve 1100 to achieve conductive contact between the support sleeve 150 and the inner sleeve 1100. The socket housing of the adapter socket 3 fixed on the chassis is made of a conductive material. When affected by lightning disasters and strong electricity, the static charge induced in the metal armor tube 41 of the optical cable 4 will be introduced into the ground through the support sleeve 150, the inner sleeve 1100, the socket housing and the chassis 2 in sequence.

[0222] In addition, the inner wall of the above inner sleeve 1100 has a forward contact mating surface 1111. As Figure 33 and Figure 34As shown, when the fiber optic plug connector is adaptively connected to the mating socket 3 on the chassis 2, the inner core of the plug is subjected to a backward force from the mating socket 3, which can cause the rear end face of the larger outer diameter section 1502 to contact the contact mating surface 1111 of the inner sleeve 1100, enabling electrical contact between the support sleeve 150 and the inner sleeve 1100 at this location. In addition, when the anti-rotation block 1504 of the support sleeve 150 and the anti-rotation groove of the inner sleeve 1100 are in circumferential anti-rotation cooperation, electrical contact between the support sleeve 150 and the inner sleeve 1100 can also be achieved.

[0223] Of course, in other embodiments, the metal armor tube of the optical cable and the support sleeve can also be electrically connected using the structure in the specific embodiment 8 of the above fiber optic plug connector.

[0224] Specific embodiment 1 of the connector assembly of the present invention:

[0225] As Figures 9 to 11 shown, the connector assembly includes a fiber optic plug connector 1 and an optical cable 4. The mating socket 3 for connecting to the fiber optic plug connector 1 is provided with a flange 31, and the flange 31 is fixed to the chassis 2 by bolts 32. The optical cable 4 is fixed to the fiber optic plug connector 1, and the fiber optic plug connector 1 is adaptively connected to the mating socket 3. The fiber optic plug connector 1 in this embodiment has the same structure as the fiber optic plug connector in the specific embodiment 1 of the above fiber optic plug connector, and will not be elaborated here. Of course, in other embodiments, the plug can also use any one of the fiber optic plug connectors in the specific embodiments 2 - 10 of the above fiber optic plug connector. For the connection method between the optical cable and the fiber optic plug connector, refer to the connection method of the optical cable in the corresponding fiber optic plug connector embodiment. The static charge induced in the metal armor tube 41 of the optical cable 4 will be sequentially conducted to the ground through the support sleeve 15, the conductive sheet 17, and the chassis 2.

[0226] It should be noted that the optical cable here is an armored optical cable, and the metal armor tube is in the shape of armor wire, that is, formed by helically winding the armor wire, which is convenient for sleeving and crimping, and also convenient for lead wire crimping operation.

[0227] Specific embodiment 2 of the connector assembly of the present invention:

[0228] The main difference from the specific embodiment 1 of the above connector assembly is that: as Figure 28 and Figure 29 shown, the fiber optic plug connector 1 in this embodiment has the same structure as the fiber optic plug connector in the specific embodiment 11 of the above fiber optic plug connector, and will not be elaborated here. The static charge induced in the metal armor tube 401 of the optical cable 40 will be sequentially conducted to the ground through the conductive sheet 170 and the chassis 2.

[0229] Specific embodiment 3 of the connector assembly of the present invention:

[0230] The main difference from the specific embodiment 1 of the above optical fiber plug connector lies in that, as shown in 33 and Figure 34 As shown, the structure of the optical fiber plug connector 1 in this embodiment is the same as that of the optical fiber plug connector in the specific embodiment 12 of the above optical fiber plug connector, and will not be elaborated here. It should be noted that the socket housing of the adapter socket 3 provided on the chassis 2 in this embodiment is made of a metal material, and the static charges induced by the metal armor tube 41 in the optical cable 4 will be introduced into the ground successively through the support sleeve 150, the inner sleeve 1100, the socket housing and the chassis 2.

[0231] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. The patent protection scope of the present invention is subject to the claims. Any equivalent structural changes made by using the content of the specification and drawings of the present invention should, by the same token, be included in the protection scope of the present invention.

Claims

1. An optical fiber plug connector, comprising: A plug housing is provided with a contact piece inside, the front end of the plug housing is a plug-in end for connecting with the adapter socket, and the rear end of the plug housing is provided with an optical cable through hole for the optical cable to pass through and connect with the contact piece; Its characteristics include: A conductive member is arranged inside the plug housing, the front end of the conductive member is used to be directly conductively contacted or indirectly conductively connected to a chassis on which the adapter socket is installed, and the rear end of the conductive member is used to be indirectly conductively connected to a metal armor tube inside the optical cable, so that the static charge on the metal armor tube is introduced into the chassis through the conductive member to achieve grounding of the metal armor tube; A support sleeve for supporting the contact piece is provided in the plug housing, and the support sleeve includes a section with a larger outer diameter and a section with a smaller outer diameter arranged at the front and rear, and the section with a smaller outer diameter constitutes a corresponding crimping section. The crimping sleeve is sleeved on the section with a smaller outer diameter of the support sleeve, and the front end of the crimping sleeve is stop-fitted with the rear end face of the section with a larger outer diameter of the support sleeve. The support sleeve is provided with a cable core through-hole for the cable core of the optical cable to pass through and connect with the contact piece, and the rear end of the cable core through-hole is a step hole with a step surface facing backwards, and the metal armor tube is inserted into and fits with the large diameter section of the step hole, and the front end of the metal armor tube is stop-fitted with the step surface.

2. The optical fiber plug connector according to claim 1, characterized in that: The support sleeve is a conductive support sleeve, and the support sleeve is used for conductive connection with the metal armor tube; The conductive member is a rod or sheet extending in the front-to-back direction, and the rear end of the conductive member is conductively connected to the support sleeve, so that the rear end of the conductive member is indirectly conductively connected to the metal armor tube through the support sleeve, and the front end of the conductive member forms a cantilevered end, which is used for direct conductive contact with the chassis, so that the static charge on the metal armor tube is introduced into the chassis through the support sleeve and the conductive member to achieve grounding.

3. The optical fiber plug connector according to claim 2, characterized in that: When the metal armor tube is inserted into the step hole, the crimping section is used to crimp and fix the metal armor tube and the crimping section through the crimping sleeve sleeved on the crimping section, so that the metal armor tube and the support sleeve maintain conductive contact.

4. The fiber optic plug connector according to claim 2, characterized in that, The rear end of the support sleeve is provided with a cylindrical crimping section for overlapping the extended part of the metal armor tube, and the extended part is fixed on the crimping section by a crimping sleeve sleeved on the crimping section, so that the metal armor tube and the support sleeve maintain conductive contact.

5. The fiber optic plug connector according to any one of claims 2-4, characterized in that, The support sleeve is provided with a threaded hole, and the rear end of the conductive member is provided with a fixing hole. The conductive member is fixedly connected by a screw passing through the fixing hole and threadedly connected to the threaded hole, so as to realize the conductive connection between the conductive member and the support sleeve.

6. The fiber optic plug connector according to claim 5, characterized in that, The threaded hole is a countersunk hole.

7. The fiber optic plug connector according to any one of claims 2-4, characterized in that, The rear end of the conductive member is provided with a C-shaped spring claw, and the support sleeve is provided with a C-shaped groove. The C-shaped groove is adapted to the C-shaped spring claw, and the C-shaped spring claw is tightly fixed on the bottom of the C-shaped groove to achieve conductive connection between the conductive member and the support sleeve.

8. The fiber optic plug connector according to any one of claims 2-4, characterized in that, Two elastic arms are provided at the rear end of the conductive member, one end of the two elastic arms is fixed and the other end is arranged at intervals to form an opening, and the two elastic arms are provided with hooks close to each other at the opening position, and a groove is provided on the support sleeve, and the groove is adapted to the two elastic arms. The two elastic arms are sleeved on the groove, and the hook is hooked and matched with the bottom of the groove to realize the conductive connection between the conductive member and the support sleeve.

9. The fiber optic plug connector according to any one of claims 2-4, characterized in that, The conductive member is an elastic member with an overhanging front end, which makes it elastic. The front end and the rear end of the conductive member are staggered in a direction perpendicular to the plugging direction of the optical fiber plug connector. The front end of the conductive member is arranged away from the center line of the optical fiber plug connector, and the rear end is arranged close to the center line of the optical fiber plug connector, so that the front end of the conductive member is in elastic top pressure contact with the chassis where the adapter socket is installed.

10. The fiber optic plug connector according to claim 9, characterized in that, A conductive protrusion is provided at the front end of the conductive member, and the conductive protrusion is used to protrude toward the chassis. The conductive protrusion is in elastic pressing contact with the chassis on which the adapter socket is installed, so as to achieve elastic pressing contact between the front end of the conductive member and the chassis on which the adapter socket is installed.

11. The fiber optic plug connector according to claim 9, wherein, The conductive protrusion is in the shape of an arc, a circular ring or an inverted triangle, and is formed by bending the front end of the conductive member; Alternatively, the conductive protrusion is spherical.

12. The fiber optic plug connector according to claim 1, characterized in that, The conductive member is a rod or sheet extending in the front-to-back direction, the rear end of the conductive member is used for direct conductive contact with the metal armor tube, and the front end forms a cantilevered end, which is used for direct conductive contact with the chassis, so that the static charge on the metal armor tube is introduced into the chassis through the conductive member.

13. The fiber optic plug connector according to claim 12, characterized in that, The conductive member is an elastic member with an overhanging front end, which makes it elastic. The front end and the rear end of the conductive member are staggered in a direction perpendicular to the plugging direction of the optical fiber plug connector. The front end of the conductive member is arranged away from the center line of the optical fiber plug connector, and the rear end is arranged close to the center line of the optical fiber plug connector, so that the front end of the conductive member is in elastic top pressure contact with the chassis where the adapter socket is installed.

14. The fiber optic plug connector according to claim 13, characterized in that, A conductive protrusion is provided at the front end of the conductive member, and the conductive protrusion is used to protrude toward the chassis. The conductive protrusion is in elastic pressing contact with the chassis on which the adapter socket is installed, so as to achieve elastic pressing contact between the front end of the conductive member and the chassis on which the adapter socket is installed.

15. The fiber optic plug connector according to claim 14, characterized in that, The conductive protrusion is in the shape of an arc, a circular ring or an inverted triangle, and is formed by bending the front end of the conductive member; Alternatively, the conductive protrusion is spherical.

16. The fiber optic plug connector according to any one of claims 12-15, characterized in that, An adhesive sleeve is provided in the plug housing, into which the rear end of the conductive part and the front end of the metal armor tube inside the optical cable extend, so that the metal armor tube and the conductive part are in direct conductive contact, and the metal armor tube and the conductive part are fixed in the adhesive sleeve by a colloid formed by solidification of the glue liquid poured into the adhesive sleeve.

17. The fiber optic plug connector according to claim 1, characterized in that, The plug housing comprises an outer housing and an inner sleeve, wherein the inner sleeve is inserted into the outer housing, and a gap is provided between the front end of the inner sleeve and the outer housing, and the gap is provided for the adapter socket to be inserted; The support sleeve is arranged inside the inner sleeve; The support sleeve constitutes the conductive part, and the front end of the support sleeve is plugged into the inner sleeve so that the front end of the conductive part is indirectly conductively connected to the chassis on which the adapter socket is installed through the inner sleeve, and the rear end of the support sleeve is used for direct conductive contact with the metal armor tube, so that the static charge on the metal armor tube is introduced into the chassis through the conductive part.

18. The fiber optic plug connector according to claim 17, characterized in that when the crimping section is inserted and fitted with the stepped hole in the metal armor tube, it is used to crimp and fix the metal armor tube and the crimping section through a crimping sleeve sleeved on the crimping section, so that the metal armor tube and the support sleeve maintain electrical contact.

19. The fiber optic plug connector according to claim 17, characterized in that, The rear end of the support sleeve is provided with a cylindrical crimping section for the extended part of the metal armor tube to overlap, and the extended part is fixed on the crimping section through a crimping sleeve sleeved on the crimping section, so that the metal armor tube and the support sleeve maintain electrical contact.

20. A connector assembly, comprising: An optical cable, including a metal armor tube and a cable core, and the cable core is arranged inside the metal armor tube; A fiber optic plug connector, and the optical cable is connected to the rear end of the fiber optic plug connector; The fiber optic plug connector includes: A plug housing, which is internally provided with contacts. The front end of the plug housing is a plug-in end for connecting with a mating socket. The rear end of the plug housing is provided with an optical cable through hole for the optical cable to pass through and connect with the contacts; Characterized in that it further includes: A conductive member, arranged inside the plug housing. The front end of the conductive member is used for direct electrical contact or indirect electrical connection with the chassis where the mating socket is installed. The rear end of the conductive member is indirectly electrically connected to the metal armor tube, so that the static charge on the metal armor tube is introduced into the chassis through the conductive member, realizing the grounding of the metal armor tube; A support sleeve for supporting the contacts is arranged inside the plug housing. The support sleeve includes a larger-diameter section and a smaller-diameter section arranged front and back. The smaller-diameter section forms a corresponding crimping section. A crimping sleeve is sleeved on the smaller-diameter section of the support sleeve, and the front end of the crimping sleeve is in abutting fit with the rear end face of the larger-diameter section of the support sleeve. A cable core through hole for the cable core of the optical cable to pass through and connect with the contacts is arranged on the support sleeve. The rear end of the cable core through hole is a stepped hole, and the stepped hole has a stepped surface facing backward. The metal armor tube is inserted and fitted with the large-diameter section of the stepped hole, and the front end of the metal armor tube is in abutting fit with the stepped surface.

21. The connector assembly according to claim 20, characterized in that The support sleeve is a conductive support sleeve, and the support sleeve is electrically connected to the metal armor tube; The conductive member is a rod or sheet member extending in the front-rear direction. The rear end of the conductive member is electrically connected to the support sleeve, so that the rear end of the conductive member is indirectly electrically connected to the metal armor tube through the support sleeve. The front end of the conductive member forms an overhanging end, and the overhanging end is used for direct electrical contact with the chassis, so that the static charge on the metal armor tube is introduced into the chassis through the support sleeve and the conductive member, realizing grounding.

22. The connector assembly according to claim 21, characterized in that The crimping section crimps and fixes the metal armor tube and the crimping section through a crimping sleeve sleeved on the crimping section, so that the metal armor tube and the support sleeve maintain electrical contact.

23. The connector assembly according to claim 21, wherein, The rear end of the support sleeve is provided with a cylindrical crimping section. The front end of the metal armor tube is provided with an extended part, and the extended part overlaps on the crimping section, and the extended part is fixed on the crimping section through a crimping sleeve sleeved on the crimping section, so that the metal armor tube and the support sleeve maintain electrical contact.

24. The connector assembly according to any one of claims 21-23, characterized in that, The support sleeve is provided with a threaded hole, and the rear end of the conductive member is provided with a fixing hole. The conductive member is fixedly connected by a screw passing through the fixing hole and threadedly connected to the threaded hole, so as to realize the conductive connection between the conductive member and the support sleeve.

25. The connector assembly according to claim 24, wherein, The threaded hole is a countersunk hole.

26. The connector assembly according to any one of claims 21 - 23, characterized in that, The rear end of the conductive member is provided with a C-shaped spring claw, and the support sleeve is provided with a C-shaped groove. The C-shaped groove is adapted to the C-shaped spring claw, and the C-shaped spring claw is tightly fixed on the bottom of the C-shaped groove to achieve conductive connection between the conductive member and the support sleeve.

27. The connector assembly according to any one of claims 21-23, characterized in that, Two elastic arms are provided at the rear end of the conductive member, one end of the two elastic arms is fixed and the other end is arranged at intervals to form an opening, and the two elastic arms are provided with hooks close to each other at the opening position, and a groove is provided on the support sleeve, and the groove is adapted to the two elastic arms. The two elastic arms are sleeved on the groove, and the hook is hooked and matched with the bottom of the groove to realize the conductive connection between the conductive member and the support sleeve.

28. The connector assembly according to any one of claims 20-22, characterized in that, The conductive member is an elastic member with an overhanging front end, which makes it elastic. The front end and the rear end of the conductive member are staggered in a direction perpendicular to the plugging direction of the optical fiber plug connector. The front end of the conductive member is arranged away from the center line of the optical fiber plug connector, and the rear end is arranged close to the center line of the optical fiber plug connector, so that the front end of the conductive member is in elastic top pressure contact with the chassis where the adapter socket is installed.

29. The connector assembly according to claim 28, wherein, A conductive protrusion is provided at the front end of the conductive member, and the conductive protrusion is used to protrude toward the chassis. The conductive protrusion is in elastic pressing contact with the chassis on which the adapter socket is installed, so as to achieve elastic pressing contact between the front end of the conductive member and the chassis on which the adapter socket is installed.

30. The connector assembly according to claim 29, wherein, The conductive protrusion is in the shape of an arc, a circular ring or an inverted triangle, and is formed by bending the front end of the conductive member; Alternatively, the conductive protrusion is spherical.

31. The connector assembly according to claim 20, wherein, The conductive member is a rod or sheet extending in the front-to-back direction, the rear end of the conductive member is in direct conductive contact with the metal armor tube, and the front end forms a cantilevered end, which is used to make direct conductive contact with the chassis, so that the static charge on the metal armor tube is introduced into the chassis through the conductive member.

32. The connector assembly according to claim 31, characterized in that, The conductive member is an elastic member with an overhanging front end, which makes it elastic. The front end and the rear end of the conductive member are staggered in a direction perpendicular to the plugging direction of the optical fiber plug connector. The front end of the conductive member is arranged away from the center line of the optical fiber plug connector, and the rear end is arranged close to the center line of the optical fiber plug connector, so that the front end of the conductive member is in elastic top pressure contact with the chassis where the adapter socket is installed.

33. The connector assembly according to claim 32, wherein, A conductive protrusion is provided at the front end of the conductive member, and the conductive protrusion is used to protrude toward the chassis. The conductive protrusion is in elastic pressing contact with the chassis on which the adapter socket is installed, so as to achieve elastic pressing contact between the front end of the conductive member and the chassis on which the adapter socket is installed.

34. The connector assembly according to claim 33, wherein, The conductive protrusion is in the shape of an arc, a circular ring or an inverted triangle, and is formed by bending the front end of the conductive member; Alternatively, the conductive protrusion is spherical.

35. The connector assembly according to any one of claims 31 - 34, characterized in that, An adhesive sleeve is provided in the plug housing, and the rear end of the conductive part and the front end of the metal armor tube inside the optical cable extend into the adhesive sleeve so that the metal armor tube and the conductive part are in direct conductive contact, and the metal armor tube and the conductive part are fixed in the adhesive sleeve by a colloid formed after the glue poured into the adhesive sleeve solidifies.

36. The connector assembly according to claim 20, wherein, The plug housing includes an outer housing and an inner sleeve. The inner sleeve is inserted into the outer housing, and there is a gap between the front end of the inner sleeve and the outer housing for the mating socket to be inserted. A support sleeve is arranged inside the inner sleeve. The support sleeve constitutes the conductive member. The front end of the support sleeve is in plug-in fit with the inner sleeve, so that the front end of the conductive member is indirectly conductively connected to the chassis where the mating socket is installed through the inner sleeve. The rear end of the support sleeve is in direct conductive contact with the metal armor tube, so that the static charge on the metal armor tube is introduced into the chassis through the conductive member.

37. The connector assembly according to claim 36, wherein The crimping section is fixedly crimped to the metal armor tube through a crimping sleeve sleeved on the crimping section, so that the metal armor tube remains in conductive contact with the support sleeve.

38. The connector assembly according to claim 36, wherein, A cylindrical crimping section is provided at the rear end of the support sleeve. The front end of the metal armor tube is provided with an extending portion. The extending portion is lapped on the crimping section and is fixed to the crimping section through a crimping sleeve sleeved on the crimping section, so that the metal armor tube remains in conductive contact with the support sleeve.

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