CN115407459A

CN115407459A - MT card holder, MT card holder assembling method and adapter assembly

Info

Publication number: CN115407459A
Application number: CN202110587514.1A
Authority: CN
Inventors: 黄火清; 颜波; 杜安学; 黄新华
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-05-27
Filing date: 2021-05-27
Publication date: 2022-11-29

Abstract

The application discloses an MT card holder, an assembling method thereof and an adapter assembly, and belongs to the technical field of connectors. The MT clamping clamp is used for being connected with an MT optical fiber, the MT optical fiber comprises an optical fiber head and a tail optical fiber which are connected with each other, a guide hole is formed in the optical fiber head, and the MT clamping clamp comprises: a clamping seat and a guide rod; the first end of the guide rod is fixedly connected with the clamping seat, and the second end of the guide rod is configured as follows: one end of the guide hole close to the tail fiber is inserted into the guide hole, and the other end of the guide hole far away from the tail fiber is exposed, and the first end and the second end of the guide rod are two opposite ends of the guide rod; the card seat is internally provided with a containing part which is configured to pass the tail fiber of the MT optical fiber after the guide rod is plugged with the guide hole. This application can improve the dismouting efficiency of MT clamping.

Description

MT card holder, MT card holder assembling method and adapter assembly

Technical Field

The application relates to the technical field of connectors, in particular to an MT card holder, an assembling method thereof and an adapter assembly.

Background

A Multi-fiber Push On (MPO) adapter is also called an MT/MPO adapter, and is an important device in a single board of an optical communication device. The two ends of the MT-MPO adapter are an MT port and an MPO port respectively. The MT port is used for being connected with an MT plug, and the MPO port is used for being connected with an MPO plug. The MT plug includes MT fibers and an MT card holder through which the MT fibers need to be connected to the MT ports.

The current MT clamp comprises a base and a cover plate, wherein the base and the cover plate are sleeved on an optical fiber head of the MT optical fiber after being fixed by screws, so that the MT clamp and the MT optical fiber are fixed. However, the MT card holder requires a special tool to be attached and detached, which results in low efficiency of attachment and detachment.

Disclosure of Invention

The embodiment of the application provides an MT card holder, an MT card holder assembling method and an adapter assembly. The technical scheme is as follows:

in a first aspect, the present application provides an MT holder for connecting an MT optical fiber, the MT optical fiber including an optical fiber stub and a pigtail connected to each other, the optical fiber stub having a guiding hole thereon, the MT holder comprising: a clamping seat and a guide rod; the first end of the guide rod is fixedly connected with the clamping seat, and the second end of the guide rod is configured as follows: one end of the guide hole of the optical fiber head, which is close to the tail fiber, is spliced with the guide hole, one end of the guide hole, which is far away from the tail fiber, is exposed, and the first end and the second end of the guide rod are two opposite ends of the guide rod; the card seat is internally provided with a containing part which is configured to pass the tail fiber of the MT optical fiber after the guide rod is plugged with the guide hole.

According to the MT clamp provided by the embodiment of the application, after the clamp seat is connected with the MT optical fiber through the guide rod fixed on the clamp seat, the tail optical fiber penetrates through the accommodating part of the clamp seat, and therefore the MT clamp and the MT optical fiber can be assembled. Therefore, the disassembly and the assembly of special tools are not needed, and the disassembly and the assembly efficiency are effectively improved. The MT card holder has a simpler structure and occupies less space, and the whole miniaturization of the MT plug can be realized.

Optionally, the cartridge is of a removable construction. The cassette is designed to be detachable, so that the miniaturization of each part of the cassette can be realized, and the replacement of each part can be realized. When a certain part has the problems of abrasion and the like, the part can be replaced, so that the service life of the clamping seat is prolonged, and the maintenance cost is reduced.

For example, the cartridge includes: the first supporting seat, the second supporting seat and the connecting rod; the first supporting seat and the second supporting seat are connected through the connecting rod, and the first supporting seat and the second supporting seat after connection are arranged along the extending direction of the guide rod; the first supporting seat is provided with a first sub-groove, the second supporting seat is provided with a second sub-groove, and after the first supporting seat and the second supporting seat are connected through the connecting rod, the first sub-groove is communicated with the second sub-groove to form the accommodating part.

Illustratively, the connecting rod comprises a rod body, a first clamping part and a second clamping part, wherein the first clamping part and the second clamping part are positioned at two ends of the rod body; the first supporting seat is provided with a first containing groove, and the second supporting seat is provided with a second containing groove; the first accommodating groove is configured to accommodate a part of the connecting rod and is provided with a third clamping portion clamped with the first clamping portion, and the second accommodating groove is configured to accommodate the other part of the connecting rod and is provided with a fourth clamping portion clamped with the second clamping portion. Illustratively, one of the first clamping part and the third clamping part is a clamping protrusion, and the other is a clamping groove; and/or one of the second clamping part and the fourth clamping part is a clamping protrusion, and the other one is a clamping groove.

If the first end of the guide rod is fixedly connected with the first support seat, the second support seat can receive the thrust in the target direction, so as to realize the insertion of the card seat and the MT port. The MT card holder further comprises: the elastic element is positioned in the clamping seat; the second support seat is further configured to: after receiving the thrust of the target direction, the elastic element is deformed by moving in the target direction, and the target direction is the inserting direction of the guide rod and the guide hole; the elastic element is configured to: after the deformation is generated, the elastic element transmits the thrust to the first supporting seat and provides elastic force opposite to the target direction to the second supporting seat.

Through set up elastic element in the cassette, buffering and the atress when can realize MT plug and MT port grafting are balanced, avoid the direct collision and the wearing and tearing of first supporting seat and second supporting seat, also avoid the guide arm too concentrated in stress when pegging graft, so reduce the probability of MT clamping damage, improve the butt joint reliability to improve the life of MT clamping, reduce the maintenance cost.

The embodiments of the present application are described by taking the following two assembling relationships as examples.

The first assembly relationship is: after the connecting rod is clamped in the first accommodating groove and the second accommodating groove, at least part of the elastic element is positioned between the first supporting seat and the second supporting seat. Suppose that the first clamping portion is clamped in the third clamping portion and the second clamping portion is clamped in the fourth clamping portion. In a first alternative, two ends of the elastic element are respectively abutted with the third clamping part and the fourth clamping part. In a second alternative, two ends of the elastic element are respectively abutted against one surface of the first supporting seat facing the second supporting seat and the fourth clamping portion. In a third alternative, two ends of the elastic element are respectively abutted against the third clamping part and one surface of the second supporting seat facing the first supporting seat.

In the second alternative and the third alternative, one end of the elastic element may abut against the clamping portion of one of the supporting seats, and the other end of the elastic element may abut against the other supporting seat in various ways. For example, the size of the opening of the first accommodating groove and the second accommodating groove b1 for the connecting rod to pass through may be different, and along the deformation direction of the elastic element, the outer diameter of the elastic element is unchanged, so that one end of the elastic element may reach the clamping portion in the accommodating groove through the opening of one accommodating groove, and the other end may not pass through the opening of the other accommodating groove, thereby abutting against the supporting seat.

For another example, the sizes of the openings of the first receiving groove and the second receiving groove for the connecting rod to pass through may be equal, and along the deformation direction of the elastic element, the outer diameter of the elastic element may be variable, so that one end of the elastic element may pass through the opening of one receiving groove (for example, the outer diameter of one end of the elastic element is smaller than the minimum size of the opening of the receiving groove) to reach the clamping portion in the receiving groove, and the other end of the elastic element may not pass through the opening of the other receiving groove (for example, the outer diameter of the other end of the elastic element is larger than the maximum size of the opening of the receiving groove), so as to abut against the supporting seat.

Illustratively, the elastic element is a compression spring, and the compression spring is sleeved on the rod body. Through cup jointing with the connecting rod, can reduce elastic element and shake in its radial ascending, keep elastic element's stability.

For example, the connecting rod is for having the columnar structure of different diameters, and the connecting rod both ends are the column joint arch, and cylindric joint is protruding for example, and third joint portion and fourth joint portion are the joint recess that has the column cavity, for example have the joint recess of cylindric cavity. The clamping seat with the structure is convenient to manufacture and disassemble.

The second assembly relationship is as follows: after the connecting rod is clamped in the first accommodating groove and the second accommodating groove, the elastic element is positioned in the first supporting seat and/or the elastic element is positioned in the second supporting seat.

In an embodiment of the present invention, the first receiving groove has a first side opening, the second receiving groove has a second side opening, the first receiving groove is configured to receive a portion of the connecting rod through the first side opening, and the second receiving groove is configured to receive another portion of the connecting rod through the second side opening. Through set up the side opening at the storage tank, can assemble the connecting rod from the side to the storage tank in, realize the rapid Assembly of connecting rod, improve dismouting efficiency.

Optionally, the connecting rod has a limiting portion in the middle thereof, and the limiting portion is configured to limit a moving distance of the connecting rod in the accommodating portion. Illustratively, the limiting part is a limiting column. The limiting part can meet one or more of the following conditions: in the first case, the maximum outer diameter of the limiting part is larger than the maximum size of the opening of the first accommodating groove, so that the connecting rod is abutted against the opening of the first accommodating groove in the process of moving along the target direction to realize limiting; in the second case, the maximum outer diameter of the limiting part is larger than the maximum size of the opening of the second accommodating groove so as to be abutted against the opening of the second accommodating groove in the process that the connecting rod moves in the opposite direction of the target direction to realize limiting; in a third situation, the maximum outer diameter of the limiting part is smaller than the maximum size of the opening of the first accommodating groove and larger than the size allowed by the third clamping part, so that the connecting rod is abutted against the third clamping part in the moving process along the target direction to realize limiting; in a fourth situation, the maximum outer diameter of the limiting portion is smaller than the maximum size of the opening of the second accommodating groove and larger than the size allowed to pass through by the fourth clamping portion, so that the connecting rod is abutted against the fourth clamping portion to achieve limiting in the process of moving in the opposite direction of the target direction.

Optionally, after the MT card holder is connected to the MT optical fiber, the MT card holder is used for inserting an MT port of an MT to MPO adapter, and a card slot is formed in an inner wall of the MT port; the clamping seat is provided with a clamping fin, a buckle is arranged on the clamping fin, and the buckle is configured as follows: after the card seat is pushed in a target direction, the card seat is clamped with a card slot in the MT-to-MPO adapter, and the target direction is the inserting direction of the guide rod and the guide hole; after the clamping fin is pressed towards the clamping seat, the clamping with the clamping groove is released under the driving of the clamping fin. Therefore, the MT plug can be quickly plugged and pulled, namely the MT plug and the MT port can be quickly locked and unlocked.

When the MT clip includes the elastic member, the elastic member provides the second support base with an elastic force in the direction opposite to the target direction x after being deformed. And after the buckle is clamped with the clamping groove in the MT-to-MPO adapter, the elastic element still keeps a deformation state, so that the elastic force is still provided. Then when buckle d1 removes the joint with the draw-in groove, because the effect of elasticity, the second supporting seat is popped out to target direction x is reverse, drives first supporting seat and pops out from the MT port to make the cassette can be pulled out from the MT port fast, and play certain cushioning effect to pulling out of cassette.

Optionally, the snap fin is a single-sided snap fin. I.e. the card holder has 1 card fin. The MT plug and the MT port can be quickly locked and unlocked from one side by arranging the single-side clamping fin, and the operation space occupied by plugging and unplugging operation is small. And compared with the double-side clamping fin, the single-side clamping fin occupies smaller space. Therefore, on the premise of ensuring pluggable, the space size of the MT card holder is effectively reduced, so that the miniaturization of the MT card holder is realized, more MT-to-MPO adapters are conveniently installed on a single board of the optical communication equipment, and the high-density layout of the MT-to-MPO adapters is realized.

In an optional example, after the MT card holder is connected with the MT optical fiber, the MT card holder is used for inserting an MT port of an MT-to-MPO adapter, and an inner wall of the MT port is provided with a guide groove; the cassette is provided with a guide pin which is configured to be clamped with the guide groove. Set up the effect that the pilot pin can play and guide with the guide way cooperation to prevent that the MT card from clamping and reversely inserting, guarantee the stable and accurate plug of MT plug and MT port.

In the embodiment of the application, the first end of the guide rod is fixedly connected with the clamping seat in a clamping manner. Wherein, through the mode of threaded connection and joint can need not the specialized tool dismouting, guarantee dismouting efficiency. Because the guide rod is fixedly connected with the card holder in a detachable connection mode, the guide rod can be detached from the card holder when not in use, so that the miniaturization of each part of the MT card holder is realized, the occupation of the MT card holder on the space when not in use is reduced, and the replacement of each part is realized. Because the wear rate of the guide rod is high, when the guide rod has the problems of wear and the like, the guide rod can be replaced, so that the service life of the clamping seat is prolonged, and the maintenance cost is reduced.

For example, the first end of the guide rod has a fifth clamping portion, the clamping seat has a sixth clamping portion, and the guide rod is fixedly connected with the clamping seat through the clamping of the fifth clamping portion and the sixth clamping portion.

In a second aspect, the present application provides an adapter assembly comprising: MT changes MPO adapter; the MT plug comprises an MT optical fiber and an MT clamping clip which are connected, the MT plug is plugged into an MT port of the MT-to-MPO adapter, and the MT clamping clip is any one of the MT clamping clips in the first aspect.

In a third aspect, the present application provides a method of assembling an MT holder for connecting an MT optical fiber, the MT optical fiber including an optical fiber head and a pigtail connected to each other, the optical fiber head having a guiding hole thereon, the MT holder including: the clamping seat and the guide rod are arranged, and the clamping seat is internally provided with an accommodating part; the method comprises the following steps:

obtaining a clamping seat fixedly connected with the first end of the guide rod; inserting the second end of the guide rod into the guide hole from one end of the guide hole of the optical fiber head close to the tail fiber, exposing the second end of the guide rod from one end of the guide hole far away from the tail fiber, and enabling the first end and the second end of the guide rod to be two opposite ends of the guide rod; and leading the tail fiber of the MT optical fiber to pass through the accommodating part in the card seat.

According to the MT clamping clamp assembly method provided by the embodiment of the application, after the clamping seat is connected with the MT optical fiber through the guide rod fixed on the clamping seat, the tail fiber penetrates through the accommodating part of the clamping seat, and then the MT clamping clamp and the MT optical fiber can be assembled. Therefore, the disassembly and assembly of special tools are not needed, and the disassembly and assembly efficiency is effectively improved. The MT card holder has a simpler structure and occupies less space, and the whole miniaturization of the MT plug can be realized.

Optionally, the cartridge comprises: the first supporting seat, the second supporting seat and the connecting rod; the method further comprises the following steps: connecting the first supporting seat and the second supporting seat through the connecting rod, wherein the first supporting seat and the second supporting seat after connection are arranged along the extending direction of the guide rod; the first supporting seat is provided with a first sub-groove, the second supporting seat is provided with a second sub-groove, and after the first supporting seat and the second supporting seat are connected through the connecting rod, the first sub-groove is communicated with the second sub-groove to form the accommodating part.

Illustratively, the first end of the guide bar is fixedly connected to the first support base, and the MT card holder further includes: an elastic element; the method further comprises the following steps: the elastic element is installed in the clamping seat, so that after the second supporting seat is subjected to thrust in a target direction, the elastic element is deformed by moving in the target direction, after the deformation is generated, the elastic element transmits the thrust to the first supporting seat and provides elastic force opposite to the target direction to the second supporting seat, and the target direction is the direction in which the guide rod is inserted into the guide hole.

Wherein, the process of installing the elastic element in the card seat may include: installing at least part of the elastic element between the first supporting seat and the second supporting seat; and/or the elastic element is arranged in the first supporting seat, and/or the elastic element is arranged in the second supporting seat.

In an optional mode, the connecting rod comprises a rod body, and a first clamping portion and a second clamping portion which are positioned at two ends of the rod body; the first supporting seat is provided with a first containing groove, the second supporting seat is provided with a second containing groove, the first containing groove is provided with a third clamping part, and the second containing groove is provided with a fourth clamping part; should include with this first supporting seat and this second supporting seat through the process that this connecting rod is connected: installing one part of the connecting rod in the first accommodating groove, enabling the first clamping part to be clamped with the third clamping part, installing the other part of the connecting rod in the second accommodating groove, and enabling the second clamping part to be clamped with the fourth clamping part; the process of mounting at least part of the elastic element between the first supporting seat and the second supporting seat comprises: after the first accommodating groove and the second accommodating groove are connected through the connecting rod, two ends of the elastic element are respectively abutted against the third clamping part and the fourth clamping part; or, two ends of the elastic element are respectively abutted with the third clamping part and one surface of the second supporting seat facing the first supporting seat; or, two ends of the elastic element are respectively abutted against one surface of the first supporting seat facing the second supporting seat and the fourth clamping part.

In an example, the elastic element is a compression spring, and before the connecting the first supporting seat and the second supporting seat by the connecting rod, the method further includes: the compression spring is sleeved on the rod body.

In an optional manner, the first receiving groove has a first side opening, the second receiving groove has a second side opening, and the process of installing a portion of the connecting rod in the first receiving groove includes: a part of the connecting rod is arranged in the first accommodating groove through the first side opening; the process of installing the other portion of the connecting rod in the second accommodating groove includes: and installing the other part of the connecting rod in the second accommodating groove through the second side opening.

In the embodiment of the application, the MT card holder is connected with the MT optical fiber and then used for being inserted into an MT port of an MT-to-multi-push MPO adapter, and a card slot is formed in the inner wall of the MT port; the clamping seat is provided with a clamping fin, and the clamping fin is provided with a buckle; the method further comprises the following steps: when the MT card holder and the MT optical fiber which are connected are required to be inserted into the MT port, thrust in a target direction is applied to the card holder, so that the buckle is clamped with a card slot in the MT-to-MPO adapter, and the target direction is the direction in which the guide rod is inserted into the guide hole; when the MT card holder and the MT optical fiber which are connected need to be pulled out of the MT port, pressure towards the card holder is applied to the card fin, and the card is driven by the card fin to be released from being clamped with the card slot.

Optionally, the method further comprises: the first end of the guide rod is fixedly connected with the clamping seat in a clamping manner.

In a fourth aspect, the present application provides a method for detaching an MT card holder, which is applied to an MT card holder that is plugged in an MT port and connected to an MT optical fiber. The MT clamp is used for being connected with an MT optical fiber, the MT optical fiber comprises an optical fiber head and a tail optical fiber which are connected with each other, and a guide hole is formed in the optical fiber head. The MT card holder includes: the first end and the second end of the guide rod are two ends opposite to the guide rod, and the clamping seat is internally provided with an accommodating part. The method comprises the following steps: taking out the tail fiber of the MT optical fiber from the accommodating part in the card seat; and pulling the clamping seat fixedly connected with the first end of the guide rod to enable the second end of the guide rod to be pulled out of the guide hole of the optical fiber head.

According to the MT clamping fixture dismounting method provided by the embodiment of the application, the tail optical fiber is taken out from the accommodating part of the clamping fixture, and the guide rod fixed on the clamping fixture is pulled out from the guide hole of the optical fiber head, so that the clamping fixture is separated from the MT optical fiber, and the MT clamping fixture and the MT optical fiber can be dismounted. Therefore, the disassembly and assembly of special tools are not needed, and the disassembly and assembly efficiency is effectively improved.

The flow of the MT card holder detaching method provided in the embodiment of the present application is opposite to the flow of the MT card holder assembling method, so that reference may be made to the reverse flow of the MT card holder assembling method provided in the third aspect, and details of the embodiment of the present application are not repeated herein.

In a fifth aspect, the present application provides a single board, including: a plurality of adapter assemblies, the adapter assembly being any one of the adapter assemblies provided in the fourth aspect. The single plate has an opening over which the plurality of adapter assemblies are mounted by a flange. And each adapter assembly in the single board is used for plugging with the MPO plug.

In a sixth aspect, the present application further provides an optical communication device, where the optical communication device includes one or more boards of the fifth aspect, and the optical communication device may be a router, a switch, an on-board optical module, or the like.

According to the MT clamp provided by the embodiment of the application, after the clamp seat is connected with the MT optical fiber through the guide rod fixed on the clamp seat, the tail optical fiber penetrates through the accommodating part of the clamp seat, and therefore the MT clamp and the MT optical fiber can be assembled. Therefore, the disassembly and assembly of special tools are not needed, and the disassembly and assembly efficiency is effectively improved. The MT card holder has a simpler structure and occupies less space, and the whole miniaturization of the MT plug can be realized.

In addition, the MT card holder provided by the embodiment of the application can be detachably connected with the MT optical fiber, so that the dismounting efficiency is improved, meanwhile, the maintenance and replacement of the MT card holder and the MT optical fiber can be realized, and the use cost is reduced. And because the MT card holder and the MT optical fiber are connected with the MT port in a pluggable way, once the MT card holder fails, the MT card holder can be pulled out for replacement, and the use cost of the optical communication equipment is reduced.

Drawings

Fig. 1 is a schematic diagram of an application environment of an MT card holder provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram of an MT fiber according to an embodiment of the present application;

FIG. 3 is a schematic structural diagram of another MT card holder provided in the embodiment of the present application;

FIG. 4 is a schematic structural diagram of another MT card holder provided in the embodiment of the present application;

FIG. 5 is an exploded view of an MT card holder according to an embodiment of the present application;

FIG. 6 is an exploded view of another MT cardholder provided in accordance with an embodiment of the present application;

FIG. 7 is a schematic diagram of an exemplary assembly principle provided by an embodiment of the present application;

FIG. 8 is a schematic view of another exemplary assembly principle provided by an embodiment of the present application;

FIG. 9 is a schematic view of another exemplary assembly principle provided by an embodiment of the present application;

FIG. 10 is a schematic view of yet another exemplary assembly principle provided by an embodiment of the present application;

fig. 11 is a schematic structural diagram of a receiving groove according to an embodiment of the present disclosure;

FIG. 12 is a schematic diagram illustrating the principle of obtaining the preset distance L in FIG. 7;

FIG. 13 is a schematic structural diagram of still another MT card holder provided in the embodiments of the present application;

FIG. 14 is a schematic structural diagram of an MT card holder provided in another embodiment of the present application;

fig. 15 is a schematic structural view of a guide rod and a clamping seat according to an embodiment of the present disclosure;

fig. 16 is a schematic flowchart of an MT card holder assembling method according to an embodiment of the present application;

fig. 17 is a schematic flowchart of a method for detaching an MT card holder according to an embodiment of the present application;

fig. 18 is a schematic diagram of a result of detaching the MT card holder shown in fig. 13 according to an embodiment of the present application;

fig. 19 is a schematic structural diagram of an adapter assembly according to an embodiment of the present application.

Detailed Description

In order to make the principle and technical solution of the present application clearer, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

Fig. 1 is a schematic application environment diagram of an MT card holder according to an embodiment of the present application. The application environment includes:

MT-to-MPO adapter 1, MT plug 2 and MPO plug 3. The number of the MT to MPO adapters 1 may be plural, and the plural MT to MPO adapters 1 are mounted on a flange plate, and can be mounted on an opening of a single board of the optical communication device through the flange plate. For example, the optical communication device may be a router board or a switch board. The optical communication equipment can support the communication mode of light emitting from the board optical module or the chip for communication, and an optical fiber with an MT joint is connected with an MT-to-MPO adapter of the optical communication equipment. Two ends of each MT-to-MPO adapter 1 are an MT port 11 and an MPO port (not labeled in fig. 1, which is located on the opposite side of the MT port 11), respectively, the MT port 11 is used for connecting with the MT plug 2, and the MPO port is used for connecting with the MPO plug 3. The MT plug 2 comprises a connected MT cardholder 21 and a MT fibre 22. The MT card holder 21 is sleeved outside the MT optical fiber 22, and the external shape of the MT card holder 21 matches (for example, the shapes of the two are consistent or partially consistent) with the internal shape of the MT port 11, so as to realize effective plugging and unplugging of the MT plug 2 and the MT port 11.

The traditional MT clamp comprises a base and a cover plate, wherein the base and the cover plate are sleeved on an optical fiber head of an MT optical fiber after being fixed through screws. Therefore, the MT card holder needs a special tool for dismounting, and the dismounting efficiency is lower.

The embodiment of the application provides an MT card holder, which can improve the dismounting efficiency of the MT card holder and an MT optical fiber. Fig. 2 is a schematic structural diagram of an MT fiber 22 according to an embodiment of the present disclosure. The MT fiber 22 includes a fiber head 221 and a pigtail 222 connected to each other, and the fiber head 221 has a guiding hole 221a. Fig. 3 is a schematic structural diagram of another MT card holder 21 according to an embodiment of the present application. The MT card holder 21 is used for connecting to the MT optical fiber 22 shown in fig. 2. The MT card holder 21 includes: a clamping seat 211 and a guide rod 212.

The first end 212a of the guide rod 212 is fixedly connected with the clamping seat 211. Second end 212b of guide 212 is configured to: one end of the guide hole 221a of the optical fiber head, which is close to the tail fiber, is spliced with the guide hole 221a, and the other end of the guide hole 221a, which is far away from the tail fiber, is exposed. That is, the guide rod 212 is inserted into the guide hole 221a along the target direction x in fig. 2 or 3, which is parallel to the extending direction of the guide hole. First end 212a and second end 212b of guide 212 are opposite ends of guide 212. Illustratively, the length of guide 212 may range from 11 to 15mm.

In the embodiment of the present application, the number of the guide rods 212 matches the number of the guide holes 221a. For example, the number of guide rods 212 is equal to the number of guide holes 221a. Since the fiber head 221 generally has 2 guide holes 221a. Thus, the MT card holder 21 typically comprises 2 guide rods 212.

The holder 211 has a receiving portion W therein configured to pass the pigtail 222 of the MT fiber 22 after the guide rod 212 is inserted into the guide hole 221a. The length of the clamping seat 211 ranges from 14 to 20mm (without the guide rod 212), and the width of the clamping seat 211 ranges from 2 to 4mm, for example, about 3 mm. The length refers to a length parallel to the target direction, and the width direction is perpendicular to the length direction. The size range can realize the miniaturization of the card seat, and is convenient for the assembly of the card seat and the integral disassembly and assembly of the MT card holder.

For example, as shown in fig. 3, the accommodating portion W may be a groove extending in a direction parallel to the extending direction of the guide bar 212. When the guide rod is inserted into the guide hole, the extending direction of the groove is parallel to the insertion direction (i.e. the target direction x) of the guide rod into the guide hole. The groove can facilitate the passage of the pigtail 222, and realize the quick assembly of the MT clamp and the MT optical fiber.

In practical implementation of the embodiment of the present application, the external shape of the card socket 211 is matched with the internal shape of the MT port 11 of the MT to MPO adapter, so as to achieve effective plugging and unplugging of the card socket 211 and the MT port 11.

Fig. 3 illustrates the card socket 211 as an integral structure. In practical implementation of the embodiment of the present application, the structure of the card seat 211 may also have other implementation manners. For example, it may be a removable structure. The cassette is arranged in a detachable structure, so that the miniaturization of each part of the cassette can be realized, and the replacement of each part can be realized. When a certain part has the problems of abrasion and the like, the part can be replaced, so that the service life of the clamping seat is prolonged, and the maintenance cost is reduced.

Fig. 4 is a schematic structural diagram of another MT card holder 21 provided in the embodiment of the present application. As shown in fig. 4, the card holder 211 includes: a first supporting seat 211a, a second supporting seat 211b and a connecting rod 211c.

The first supporting seat 211a and the second supporting seat 211b are connected by a connecting rod 211c, and the connected first supporting seat 211a and second supporting seat 211b are arranged along the extending direction of the guide rod 212. When the guide rod 212 is inserted into the guide hole, the extending direction of the guide rod 212 is parallel to the insertion direction of the guide rod 212 into the guide hole (i.e., the target direction x). Therefore, when the guide rod 212 is inserted into the guide hole, the first supporting seat 211a and the second supporting seat 211b are arranged along the target direction x.

The first supporting seat 211a has a first sub-groove W1, the second supporting seat 211b has a second sub-groove W2, and after the first supporting seat 211a and the second supporting seat 211b are connected by a connecting rod 211c, the first sub-groove W1 and the second sub-groove W2 are communicated to form an accommodating portion W.

It should be noted that, in fig. 3 and fig. 4, the accommodating portion W is taken as an example for description, and in the embodiment of the present application, the accommodating portion W may have another structure as long as the pigtail can pass through the accommodating portion W. For example, the receiving portion includes a groove as shown in fig. 3 or fig. 4, and a cover body detachably connected to the groove, such as by clipping. The groove is provided with two opposite openings and a side opening, and after the tail fiber passes through the groove, the cover body is arranged at the side opening of the groove to form a cavity with two ends open and the side surface closed with the groove. So, the lid can also produce certain support and limiting displacement to the tail optical fiber in the recess, reduces the displacement of tail optical fiber. But the groove structure that does not set up the lid is simpler, and the assembly process is more convenient.

In fig. 4, the holder 211 is formed by connecting a first supporting seat 211a and a second supporting seat 211b by a connecting rod 211c. Because first supporting seat and second supporting seat pass through the connecting rod and connect, consequently need not the specialized tool dismouting, guarantee dismouting efficiency.

Wherein, the connection of the first supporting seat 211a and the second supporting seat 211b through the connecting rod 211c can be realized by the following modes: one end of the connection rod 211c is connected to the first support seat 211a, and the other end of the connection rod 211c is connected to the second support seat 211b.

In an alternative implementation, the first supporting seat 211a and the second supporting seat 211b are fixedly connected (also called static connection) through a connecting rod 211c. In an alternative example, the connecting rod 211c realizes the fixed connection between the first supporting seat 211a and the second supporting seat 211b by means of clamping. For example, a portion of the connecting rod 211c is clamped in the first supporting seat 211a, the clamped connecting rod 211c is fixed to the first supporting seat 211a, another portion of the connecting rod 211c is clamped in the second supporting seat 211b, and the clamped connecting rod 211c is fixed to the second supporting seat 211b. In another alternative example, the connection rod 211c is screwed to fixedly connect the first support seat 211a and the second support seat 211b. For example, one end of the connection rod 211c is screwed to the first support seat 211a (if one end of the connection rod 211c has an external thread, the first support seat 211a has a threaded hole, and the threaded connection can be achieved by screwing one end of the connection rod 211c into the threaded hole), so as to achieve a fixed connection of one end to the first support seat 211a, and the other end of the connection rod 211c is screwed to the second support seat 211b, so as to achieve a fixed connection of the other end to the second support seat 211b (if the other end of the connection rod 211c has an external thread, the second support seat 211b has a threaded hole, and the threaded connection can be achieved by screwing the other end of the connection rod 211c into the threaded hole). In yet another alternative example, the connection rod 211c is fixedly connected to the first supporting seat 211a and the second supporting seat 211b by a threaded connection and a clamping connection. For example, one end of the connection rod 211c is screwed to one of the first and second supporting

seats

211a and 211b, and the other end of the connection rod 211c is engaged with the other of the first and second supporting

seats

211a and 211b. Because first supporting seat and second supporting seat pass through connecting rod joint and/or threaded connection, consequently need not the specialized tool dismouting, guarantee dismouting efficiency.

In another alternative implementation, the first supporting seat 211a and the second supporting seat 211b are movably connected (also called as movable connection) by a connecting rod 211c.

In an alternative example, the connecting rod 211c realizes the movable connection between the first supporting seat 211a and the second supporting seat 211b by means of clamping. The first supporting seat 211a and the second supporting seat 211b can move along the connecting rod 211c in the target direction x by a predetermined distance.

For example, a portion of the connection rod 211c is engaged with the first supporting seat 211a, and another portion of the connection rod 211c is engaged with the second supporting seat 211b. The connecting rod 211c and the first support seat 211a after being clamped can generate a relative displacement of a first distance in the target direction x, and the connecting rod 211c and the second support seat 211b after being clamped generate a relative displacement of a second distance in the target direction x. The sum of the first distance and the second distance is equal to the preset distance. Or, one end of the connecting rod 211c is fixedly connected (e.g., clamped or screwed) to one of the first supporting seat 211a and the second supporting seat 211b, the other end of the connecting rod 211c is clamped to the other one of the first supporting seat 211a and the second supporting seat 211b, and the clamped connecting rod 211c and the other one can generate a relative displacement of a preset distance in the target direction x.

By way of example, fig. 5 is an exploded view of an MT card holder 21 according to an embodiment of the present application (fig. 5 does not show a guide rod). The connecting rod 211c includes a rod body c0, and a first clamping portion c1 and a second clamping portion c2 located at two ends of the rod body c 0. The first supporting seat 211a has a first receiving groove a1, and the second supporting seat 211b has a second receiving groove b1; the first receiving groove a1 is configured to receive a portion of the connection rod 211c and has a third engaging portion a11 engaged with the first engaging portion c1, and the second receiving groove b1 is configured to receive another portion of the connection rod 211c and has a fourth engaging portion b11 engaged with the second engaging portion c2. Optionally, one of the first clamping portion c1 and the third clamping portion a11 is a clamping protrusion, and the other is a clamping groove; and/or one of the second clamping part c2 and the fourth clamping part b11 is a clamping protrusion, and the other is a clamping groove. Fig. 5 illustrates an example in which the first clamping portion c1 and the second clamping portion c2 are clamping protrusions, and the third clamping portion a11 and the fourth clamping portion b11 are clamping grooves, but the structure of each clamping portion is not limited as long as the clamping portions can achieve the clamping function thereof. In an alternative example, the aforementioned latching projection and the latching recess are matched in shape, and the latching projection can be movably placed in the latching recess in the target direction, so as to realize a latching that is movable in the target direction. For example, the clamping protrusion is a columnar clamping protrusion, and the clamping groove is a clamping groove with a columnar cavity. The length of the columnar cavity is larger than that of the columnar clamping protrusion, so that a part of space for the columnar clamping protrusion to move along the target direction is reserved.

Fig. 6 is an exploded view of another MT card holder 21 provided in the embodiments of the present application (the guide rod is not shown in fig. 6). As shown in fig. 6, on the basis that the first supporting seat 211a and the second supporting seat 211b are movably connected by the connecting rod 211c, the MT holder 21 may further include: a resilient member 213 located within the socket 211.

It is assumed that the first end 212a of the guide rod 212 is fixedly coupled to the first supporting seat 211 a. The second support seat 211b can receive a thrust in a target direction to realize the insertion of the card seat 211 with the MT port 11. As shown in fig. 4 to 6, the second supporting seat 211b has a pressing surface M along an end away from the first supporting seat 211a, and the pressing surface M is used for an operator to apply a pushing force. The pressing surface M may be a flat surface or a curved surface. When the pressing surface M is a flat surface, uniform application of the pushing force can be achieved. When the pressing surface M is a curved surface such as a concave surface, concentrated application of the pushing force can be achieved.

Correspondingly, the second support seat 211b is further configured to: after receiving the thrust force F1 in the target direction x, the elastic element 213 is deformed by moving in the target direction x. Accordingly, the elastic element 213 is configured to: after the deformation, the elastic element 213 transmits a pushing force F1 to the first supporting seat 211a and provides an elastic force F2 opposite to the target direction x to the second supporting seat 211b. The target direction x is the inserting direction of the guide rod and the guide hole. The pushing force F1 can drive the guide rod 212 to be pushed into the MT port by the first supporting seat 211a, so as to realize the quick insertion of the MT card holder.

Through set up elastic element in the cassette, buffering and the atress equilibrium when can realize MT plug and MT port grafting, avoid the direct collision and the wearing and tearing of first supporting seat and second supporting seat, also avoid guide arm 212 too concentrated in the stress when pegging graft, so reduce the probability of MT clamping damage, improve the butt joint reliability to improve the life of MT clamping, reduce the maintenance cost.

In the embodiment of the present application, the fitting relationship between the elastic member 213 and each member of the MT card holder 21 may be various, as long as the aforementioned transmission of the pushing force F1 and the provision of the elastic force F2 are enabled. Fig. 7 to 10 are schematic views of several exemplary assembly principles provided by embodiments of the present application. The present embodiment is described by taking only some assembling relationships in fig. 7 to 10 as examples, but the assembling relationships are not limited.

It is assumed that the first engaging portion c1 is engaged in the third engaging portion a11 and the second engaging portion c2 is engaged in the fourth engaging portion b11. As shown in fig. 7 to 9, the first assembly relationship is: after the connecting rod 211c is clamped in the first receiving cavity a1 and the second receiving cavity b1, at least a portion of the elastic element 213 is located between the first supporting seat 211a and the second supporting seat 211b. In the first alternative, as shown in fig. 7, both ends of the elastic element 213 are respectively abutted against the third and fourth catching portions a11 and b11. In a second alternative, as shown in fig. 8, two ends of the elastic element 213 are respectively abutted against one surface of the first supporting seat 211a facing the second supporting seat 211b and the fourth clamping portion b11. In a third alternative, as shown in fig. 9, two ends of the elastic element 213 are respectively abutted against the third engaging portion a11 and one surface of the second supporting seat 211b facing the first supporting seat 211 a.

In the second alternative and the third alternative, one end of the elastic element 213 may abut against the clamping portion of one support seat, and the other end may abut against the other support seat. For example, the sizes of the openings of the first receiving groove a1 and the second receiving groove b1 for the connecting rod 211c to pass through may be different, and along the deformation direction of the elastic element 213, the outer diameter of the elastic element 213 is not changed, so that one end of the elastic element 213 may pass through the opening of one receiving groove (e.g., the outer diameter of the elastic element 213 is smaller than the minimum size of the opening of the receiving groove) to reach the clamping portion in the receiving groove, and the other end of the elastic element 213 may not pass through the opening of the other receiving groove (e.g., the outer diameter of the elastic element 213 is larger than the maximum size of the opening of the receiving groove) to abut against the supporting seat. Fig. 8 is a schematic view illustrating that, in fig. 8, the size of the opening of the second receiving groove b1 of the second supporting seat 211b is larger than the outer diameter of the elastic element 213, and is larger than the size of the opening of the first receiving groove a1 of the first supporting seat 211 a. Illustratively, the elastic member 213 is a cylindrical spring (also referred to as a cylindrical coil spring).

For another example, the sizes of the openings of the first receiving groove a1 and the second receiving groove b1 through which the connecting rod 211c passes may be equal, and along the deformation direction of the elastic element 213, the outer diameter of the elastic element 213 may be changed, so that one end of the elastic element 213 may pass through the opening of one receiving groove (e.g., the outer diameter of one end of the elastic element 213 is smaller than the minimum size of the opening of the receiving groove) to reach the engaging portion in the receiving groove, and the other end of the elastic element 213 may not pass through the opening of the other receiving groove (e.g., the outer diameter of the other end of the elastic element 213 is larger than the maximum size of the opening of the receiving groove) to abut against the supporting seat. Fig. 9 is schematically illustrated in this manner. In fig. 9, the opening of the second receiving cavity b1 of the second supporting seat 211b has a size equal to the opening of the first receiving cavity a1 of the first supporting seat 211a, and the outer diameter of one end of the elastic element 213 is larger than the size, and the outer diameter of the other end is smaller than the size. Illustratively, the elastic element 213 is a pagoda spring (also called a tower spring or a cone spring).

In fig. 7 to 9, the first engaging portion c1 is engaged with the third engaging portion a11, and the second engaging portion c2 is engaged with the fourth engaging portion b11. In practical implementation, the third engaging portion a11 can be engaged with the first engaging portion c1, and the fourth engaging portion b11 can be engaged with the second engaging portion c2. In this case, the first alternative of fig. 7 may be replaced by: both ends of the elastic member 213 abut against the first engaging portion c1 and the second engaging portion c2, respectively. The second alternative of fig. 8 may be replaced by: two ends of the elastic element 213 are respectively abutted against one surface of the first supporting seat 211a facing the second supporting seat 211b and the second clamping portion c2. The third alternative of fig. 9 may be replaced by: both ends of the elastic element 213 are respectively abutted against the first engaging portion c1 and one surface of the second supporting seat 211b facing the first supporting seat 211 a. The position of the elastic element 213 may also be adjusted according to the position of each clamping portion and the clamping manner, which is not described herein again in this embodiment of the application.

As shown in fig. 10, the second assembly relationship is: after the connecting rod 211c is clamped in the first receiving cavity a1 and the second receiving cavity b1, the elastic element 213 is located inside the first supporting seat 211a and/or inside the second supporting seat 211b. In fig. 10, there are 2 elastic elements 213 corresponding to one connecting bar, which are an elastic element 213a and an elastic element 213b, respectively. Wherein, two ends of the elastic element 213a are respectively abutted against the bottom of the first receiving groove a1 and the first clamping portion c 1; both ends of the elastic element 213b are respectively abutted against the bottom of the second receiving groove b1 and the second engaging portion c2. It should be noted that, according to actual requirements, the

elastic elements

213a and 213b may be alternatively disposed, and fig. 10 is only schematically illustrated by disposing 2 elastic elements.

In practical implementation of the embodiment of the present application, the first assembling relationship and the second assembling relationship may be implemented separately or in combination. When the two are combined, after the two ends of the connecting rod 211c are clamped in the first receiving groove a1 and the second receiving groove b1, an elastic element 213 is at least partially located between the first supporting seat 211a and the second supporting seat 211 b; and one elastic element 213 is located inside the first supporting seat 211a and/or one elastic element 213 is located inside the second supporting seat 211b.

The type of the elastic member 213 may be various. In some alternative examples, it may be a compression spring. In other alternative examples, it may be a spring. The type of the elastic element is not limited in the embodiments of the present application, as long as the corresponding elastic force can be provided.

In the foregoing embodiment, the elastic element 213 is assembled with the surface of the supporting seat (e.g., the surface of the first supporting seat 211a facing the second supporting seat 211b in fig. 8, or the surface of the second supporting seat 211b facing the first supporting seat 211a in fig. 9) or the engaging portion (e.g., the fourth engaging portion b11 in fig. 8, the third engaging portion a11 in fig. 9, or the first engaging portion c1 or the second engaging portion c2 in fig. 10) by abutting. The butt joint assembling mode is simple, and the assembling efficiency is higher.

In practical implementation of the embodiment of the present application, the abutting assembly method may be replaced by other detachable connection assembly methods. For example, the elastic element 213 is connected to the surface or the clamping portion of the supporting base by clamping. The clamping assembly mode is simple, the assembly efficiency is high, and better connection stability can be achieved compared with the abutting connection mode.

Alternatively, when the elastic element 213 is a spring, if the elastic element 213 is assembled in the first assembling relationship, the elastic element 213 may be sleeved on the connecting rod 211c, and by being sleeved on the connecting rod 211c, the radial shake of the elastic element 213 may be reduced, and the stability of the elastic element 213 may be maintained. If the elastic element 213 is assembled in the second assembling relationship, the bottom of the receiving groove (e.g., the bottom of the first receiving groove a 1) for receiving the elastic element 213 may be provided with a supporting rod, and the extending direction of the supporting rod is parallel to the extending direction of the guide rod. The elastic element 213 may be sleeved on a support rod, and the support rod may reduce the radial shake of the elastic element 213, so as to maintain the stability of the elastic element 213.

The example, connecting rod 211c is for having the columnar structure of different diameters, and connecting rod 211c both ends are the column joint arch, for example cylindric joint arch, and third joint portion and fourth joint portion are the joint recess that has the column cavity, for example the joint recess that has the cylindric cavity. The clamping seat with the structure is convenient to manufacture and disassemble.

As shown in fig. 5 or fig. 6, the first receiving groove a1 has a first side opening a12, and the second receiving groove b1 has a second side opening b12. The first receiving groove a1 is configured to receive a portion of the connection bar 211c through the first side opening a12, and the second receiving groove b1 is configured to receive another portion of the connection bar 211c through the second side opening b12. As shown in fig. 5 or 6, the extending directions of the first side opening a12 and the second side opening b12 are parallel to the extending direction of the guide rod 212. Through set up the side opening at the storage tank, can assemble connecting rod 211c from the side to the storage tank in, realize the rapid Assembly of connecting rod, improve dismouting efficiency.

Assuming that the receiving cavity C is the first receiving cavity a1 or the second receiving cavity b1, the supporting seat is correspondingly the first supporting seat 211a or the second supporting seat 211b. Fig. 11 is a schematic structural diagram of an accommodating groove C according to an embodiment of the present disclosure. As shown in fig. 11, one end of the receiving groove C has a first opening T1 for allowing one end of the connecting rod 211C to pass through. Suppose that the clamping portion of the accommodating groove C is a clamping groove Q, and correspondingly, the connecting rod 211C is provided with a clamping protrusion at the end connected with the accommodating groove. In fig. 11, the locking groove Q in the accommodating groove C is defined by a baffle Q1 having a second opening T2 and the inner wall and the bottom of the accommodating groove C. In practical implementation, the clamping groove Q may also be defined by a baffle Q1 with a second opening T2, an inner wall of the accommodating groove C and another baffle. For example, the inner cavity of the accommodating groove C may be a cylindrical inner cavity or a cubic inner cavity.

The side wall of this accommodating groove C still has the side opening, and in fig. 11, this side opening is located the outside one side of accommodating groove C perpendicular to paper, and this side opening is arranged in supplying connecting rod 211C to assemble in accommodating groove C, and the joint arch and this joint recess joint of connecting rod 211C after the assembly. Illustratively, the side opening may be a rectangular opening. Optionally, the supporting seat where the accommodating groove C is located further includes: the first mounting cover is detachably connected with the side opening, such as clamping connection. After the portions of the connection bars 211C are fitted in the accommodation groove C, a cavity closed at the side is formed with the accommodation groove C by fitting a first fitting cover at the side opening (one end opening in fig. 11). Thus, the first mounting cover can also generate certain supporting and limiting effects on the connecting rod 211c, and the displacement of the connecting rod 211c in the non-target direction is reduced. Illustratively, the first mounting cap has a shape that matches at least a portion of the shape of the side opening. For example, the first mounting cover may have a shape congruent with at least a portion of the side opening. It should be noted that, the structure of the accommodating groove C without the first mounting cover is simpler, and the assembly process is more convenient.

It should be noted that fig. 11 is only a schematic structure of the accommodating groove provided for the convenience of understanding of the reader, and in practical implementation, the accommodating groove may be of other structures as long as it can effectively accommodate the connecting rod 211c. For example, the clamping groove in the accommodating groove can be arranged at other positions and is not arranged at the bottom of the accommodating groove. Or, the accommodating groove is provided with a clamping protrusion, and correspondingly, one end of the connecting rod 211c connected with the accommodating groove is provided with a clamping groove.

As shown in fig. 7 to 10, the first supporting seat 211a and the second supporting seat 211b can move relative to each other along the connecting rod 211c in the target direction x by a predetermined distance. Fig. 12 is a schematic diagram of the obtaining principle of the preset distance L in fig. 7, and for convenience of viewing by a reader, part of reference numerals in fig. 12 are not shown, and reference may be made to corresponding reference numerals in fig. 7. The predetermined distance L of the relative movement is determined by at least the following factors: the length L1 of the rod body of the connecting rod 211c, the distance L2 from the third engaging portion a11 to the opening of the first receiving cavity a1, the distance L3 from the fourth engaging portion b11 to the opening of the second receiving cavity b1, and the maximum deformation K of the elastic element 213. Illustratively, L ≦ L00, L00 being the minimum of L1-L2-L3 and K.

Further, the preset distance L of the relative movement can be determined by the following factors: a movable distance L4 of the first card section c1 in the third card section a 11; the second click portion c2 is movable by a distance L5 in the fourth click portion b11. Illustratively, L ≦ L01, where L01 is the minimum of L1-L2-L3, L4, L5, and K.

Optionally, as shown in fig. 12, the connecting rod 211c has a limiting portion c4 in the middle, that is, a limiting portion c4 is disposed on the rod body c 0. The stopper portion c4 is configured to limit the moving distance of the connection rod 211c in the accommodating portion W. Illustratively, the limiting portion c4 is a limiting post. The limiting part c4 can meet one or more of the following conditions: in the first situation, the maximum outer diameter (if it is a limiting column, the maximum outer diameter is a diameter) of the limiting portion c4 is greater than the maximum size of the opening of the first receiving groove a1, so that the connecting rod 211c abuts against the opening of the first receiving groove a1 in the moving process along the target direction x to achieve limiting; in the second situation, the maximum outer diameter of the limiting portion c4 is larger than the maximum size of the opening of the second receiving groove b1, so as to abut against the opening of the second receiving groove b1 during the movement of the connecting rod 211c along the opposite direction of the target direction x, thereby realizing limiting; in a third situation, the maximum outer diameter of the limiting portion c4 is smaller than the maximum size of the opening of the first receiving groove a1 and larger than the size allowed by the third engaging portion a11, so that the connecting rod 211c abuts against the third engaging portion a11 in the moving process along the target direction x to limit the position; in the fourth situation, the maximum outer diameter of the limiting portion c4 is smaller than the maximum size of the opening of the second receiving groove b1 and larger than the size allowed by the fourth clamping portion b11, so that the connecting rod 211c abuts against the fourth clamping portion b11 during the process of moving in the opposite direction of the target direction x to achieve limiting. In fig. 12, it is assumed that the stopper portion c4 satisfies the third case and the fourth case. The preset distance L of the relative movement can also be determined by the following factors: the maximum distance L6 between one end of the stopper c4 facing the third engaging portion a11 and the third engaging portion a 11; the maximum distance L7 between one end of the limiting portion c4 facing the fourth clamping portion b11 and the fourth clamping portion b11 is smaller. Illustratively, L ≦ L02, where L02 is the minimum of L1-L2-L3, L4, L5, K, L + L7.

Fig. 12 may also be referred to for the principle of obtaining the preset distance L and the structure of the connecting rod 211c in fig. 8 to 10, which is not described in detail in this embodiment of the present application.

It should be noted that, in the foregoing embodiment, the elastic element 213 may not be disposed in the card seat 211, and the same function as the elastic element may be achieved in other manners. For example, the connecting rod 211c is made of an elastic material (e.g., a highly elastic silicone rubber). It can realize connecting the function of first supporting seat 211a and second supporting seat 211b, can receive the thrust F1 back of target direction x at second supporting seat 211b again, produces deformation. And transmits the pushing force F1 to the first supporting seat 211a and provides the elastic force F2 opposite to the target direction x to the second supporting seat 211b.

Optionally, the card seat 211 may further include a limiting portion disposed at other positions according to practical situations, for example, the limiting portion is disposed in the first receiving groove a1 and/or the second receiving groove b1, as long as the moving distance of the connecting rod 211c in the receiving portion W can be limited, which is not described in detail in this embodiment of the application.

It is noted that there may be one or more connection rods 211c in the holder 211. Correspondingly, the number of accommodating grooves in each supporting seat is equal to the number of connecting rods 211c, so that the connecting rods 211c can be effectively accommodated. As shown in fig. 5 and 6, the holder 211 includes 2 coupling bars 211c. Correspondingly, the first supporting seat 211a has 2 first receiving grooves a1, and the second supporting seat 211b has 2 second receiving grooves b1. The 2 connecting rods 211c are assembled with the 2 first receiving grooves a1 in a one-to-one correspondence manner, and the 2 connecting rods 211c are assembled with the 2 second receiving grooves b1 in a one-to-one correspondence manner. The 2 first accommodating grooves a1 are positioned at two sides of the section of the longitudinal axis of the support seat. Optionally, for each of the first supporting seat 211a and the second supporting seat 211b, the 2 receiving grooves on the supporting seat are symmetrically disposed with respect to a longitudinal cross-section of the supporting seat, the longitudinal cross-section is parallel to a length direction of the clamping seat and perpendicular to a width direction of the clamping seat. For example, when there are 2 guide rods connected to the cassette, and the 2 guide rods are symmetrically arranged, the longitudinal axis cross section is coplanar with the symmetry plane of the 2 guide rods.

When the 2 first receiving grooves a1 of the first supporting seat 211a are symmetrically disposed and the 2 second receiving grooves b1 of the second supporting seat 211b are symmetrically disposed, the sections of the longitudinal axes of the two supporting seats are coplanar, and the assembled 2 connecting rods 211c are also symmetrical with respect to the section of the longitudinal axes. Therefore, the stress balance of the card seat 211 obtained by assembly can be realized, the integral stability of the card seat is ensured, and the butt joint reliability of the MT plug and the MT port can be improved when the MT plug is plugged with the MT port. In an actual implementation of the embodiment of the present application, the 2 first receiving grooves a1 may also be not completely symmetrical, for example, in fig. 13, one of the 2 first receiving grooves a1 is a through groove having an opening at the pressing surface M, and the other is a blind groove which is closed at the pressing surface M.

Further, when the MT clip 21 further includes the elastic elements 213, the number of the elastic elements 213 may match the number of the connection bars 211c, for example, equal to the number of the connection bars 211c. As shown in fig. 7 to 9, if the card holder 211 comprises 2 connecting rods 211c, the MT card holder 21 further comprises 2 elastic elements 213,2 connecting rods 211c and 2 elastic elements 213 assembled in a one-to-one correspondence. Alternatively, when the elastic element 213 is a spring, the spring is sleeved on the corresponding connecting rod. When the MT plug is plugged into or unplugged from the MT port, the 2 elastic elements 213 can provide buffering and realize stress balance, thereby ensuring the stability of plugging and unplugging. As shown in fig. 10, if the card holder 211 includes 2 connection bars 211c, the MT card holder 21 further includes 4 elastic members 213, and each connection bar 211c is assembled corresponding to 2 elastic members 213. When the MT plug is plugged into or pulled out from the MT port, the 4 elastic elements 213 can provide buffering and balance stress, so as to ensure the stability of plugging and pulling, and improve the reliability of the butt joint between the MT plug and the MT port when the MT plug is plugged into or pulled out from the MT port.

As shown in fig. 1, after the MT card holder 21 is connected to the MT optical fiber 22, the MT card holder is used to be inserted into the MT port 11 of the MT to MPO adapter 1, and a card slot is formed in an inner wall of the MT port 11. Fig. 13 is a schematic structural diagram of another MT card holder 21 according to an embodiment of the present application. Corresponding to the structure of the MT port 11, the card holder 211 has a card fin 211d thereon, the card fin 211d is provided with a buckle d1 thereon, and the buckle d1 is configured as follows: after the clamping seat 211 is subjected to a thrust F1 in the target direction x, the clamping seat 211 moves towards the clamping groove, and the buckle d1 is clamped with the clamping groove in the MT-to-MPO adapter 1; after the clamping fin 211d receives the pressure F2 toward the clamping seat 211, the clamping buckle d1 is driven by the clamping fin 211d to release the clamping with the clamping groove. Therefore, the MT plug can be quickly plugged and pulled, namely the MT plug and the MT port can be quickly locked and unlocked.

As described above, when the MT holder 21 includes the elastic member 213, the elastic force F2 opposite to the target direction x is provided to the second support seat 211b due to the deformation of the elastic member 213. After the buckle d1 is buckled with the slot in the MT to MPO adapter 1, the elastic element 213 still maintains the deformed state, and thus, the elastic force F2 is still provided. When the buckle d1 is released from the clamping with the card slot, due to the effect of the elastic force F2, the second supporting seat 211b is reversely popped out towards the target direction x, and the first supporting seat 211a is driven to pop out from the MT port 11, so that the card seat 211 can be quickly pulled out from the MT port 11, and a certain buffering effect is achieved on the pulling-out of the card seat 211.

In one alternative, the snap fin 211d is a bilateral snap fin. That is, the card holder 211 has 2 card fins symmetrically disposed thereon.

In another alternative, the snap fin 211d is a single-sided snap fin. I.e., the card holder 211 has 1 card fin thereon. The MT plug and the MT port can be quickly locked and unlocked from one side by arranging the single-side clamping fin, and the operation space occupied by plugging and unplugging operation is small. And compared with the double-side clamping fin, the single-side clamping fin occupies smaller space. Therefore, on the premise of ensuring pluggable, the space size of the MT card holder is effectively reduced, so that the miniaturization of the MT card holder is realized, more MT-to-MPO adapters are conveniently installed on a single board of optical communication equipment, and the high-density layout of the MT-to-MPO adapters is realized.

In practice, the inner wall of the MT port 11 is also provided with a guide groove. Fig. 14 is a schematic structural diagram of an MT card holder 21 according to another embodiment of the present application. Corresponding to the structure of the MT port 11, the card holder 211 has a guide pin 211e thereon, and the guide pin 211e is configured to be engaged with the guide groove. The guide pin 211e is arranged to guide the MT card in a matching manner with the guide groove, so that the MT card is prevented from being reversely inserted, and the MT plug 2 and the MT port 11 are ensured to be stably and accurately plugged.

In the embodiment of the present application, the first end 212a of the guide rod 212 may be fixedly connected to the socket 211 in various ways. In an alternative mode, the first end 212a of the guide rod 212 is fixedly connected with the clamping seat 211 by welding. In another alternative, if the clamping seat 211 is an integral structure and the material of the guide rod 212 is the same as that of the clamping seat 211, the guide rod 212 may be fixedly connected with the clamping seat 211 by integrally forming, that is, the guide rod 212 and the clamping seat 211 are an integral structure manufactured by the same process. If the clamping seat 211 is a structure formed by connecting the first supporting seat 211a and the second supporting seat 211b through the connecting rod 211c, and the material of the guide rod 212 is the same as that of the first supporting seat 211a, the guide rod 212 may be fixedly connected with the first supporting seat 211a in an integral forming manner, that is, the guide rod 212 and the first supporting seat 211a are made into an integral structure by using the same process. In yet another alternative, the first end 212a of the guide rod 212 is fixedly connected with the clamping seat 211 by means of screw thread connection. In still another alternative, the first end 212a of the guide rod 212 is fixedly connected to the clamping seat 211 in a clamping manner. Wherein, through the mode of threaded connection and joint can need not the specialized tool dismouting, guarantee dismouting efficiency. Because the guide rod 212 is fixedly connected with the card holder 211 in a detachable connection mode, the guide rod 212 can be detached from the card holder 211 when not in use, so that the miniaturization of each part of the MT card holder is realized, the occupation of space of the MT card holder when not in use is reduced, and the replacement of each part is realized. Because the wear rate of the guide rod is high, when the guide rod has the problems of wear and the like, the guide rod can be replaced, so that the service life of the clamping seat is prolonged, and the maintenance cost is reduced.

Fig. 15 is a schematic structural diagram of a guide rod 212 and a clamping seat 211 according to an embodiment of the present disclosure. Fig. 15 illustrates the example in which the holder 211 is a detachable structure, but the structure of the holder 211 is not limited. The first end 212a of the guide rod 212 has a fifth clamping portion d1, the clamping seat 211 has a sixth clamping portion d2, and the guide rod 212 is clamped with the sixth clamping portion d2 by the fifth clamping portion d1 to be fixedly connected with the clamping seat 211. In the example, one of the fifth clamping portion d1 and the sixth clamping portion d2 is a clamping protrusion, and the other is a clamping groove, but the structure of each clamping portion is not limited, so long as the clamping portion can realize the clamping function. In an alternative example, the aforementioned snap-in projection and snap-in recess are shaped to match, and the snap-in projection can be placed in the snap-in recess to achieve the snap-in. For example, the clamping protrusion is a columnar clamping protrusion, and the clamping groove is a clamping groove with a columnar cavity. When fifth joint portion d1 is the joint arch, when sixth joint portion d2 is the joint recess, the protruding structure with the joint recess of this joint can refer to the protruding structure with the joint recess that figure 11 shows, different with figure 11, the protruding outside of this joint is less with the inside size difference of joint recess to fixed connection is realized to the mode through the joint.

In fig. 15, the fifth clamping portion d1 is taken as a clamping groove, and the sixth clamping portion d2 is taken as a clamping protrusion. The clamping groove is an annular groove, and the clamping bulge is an annular bulge. Optionally, the clamping seat 211 further includes a third receiving groove d0, and the clamping protrusion is located in the third receiving groove d 0. The third receiving groove d0 has a side opening, the side opening is used for assembling the first end of the guide rod 212 in the clamping seat 211, and the clamping groove of the assembled guide rod 212 is clamped with the clamping protrusion. Illustratively, the side opening may be a rectangular opening. Optionally, the card seat 211 further includes: and the second mounting cover is detachably connected with the side opening, such as clamping connection. After the first end of the guide bar 212 is fitted in the third receiving groove d0, a second mounting cover is mounted at the side opening to form a cavity with at least one open end and a closed side with the card seat 211. In this way, the second mounting cover may also provide a certain supporting and limiting effect for the guide rod 212, reducing the displacement of the guide rod 212 in the non-target direction. Illustratively, the second mounting cap has a shape that matches at least a portion of the shape of the side opening. For example, the second mounting cover may have a shape congruent with at least a portion of the side opening. It should be noted that the third receiving groove d0 without the second mounting cover is simpler in structure and more convenient and faster in assembly process.

Further, fig. 15 assumes that the clamping seat 211 is a structure in which the first supporting seat 211a and the second supporting seat 211b are connected by the connecting rod 211c. When the first supporting seat 211a has the first receiving cavity a1 and the third receiving cavity d0 at the same time, the two receiving cavities can be communicated with each other, thereby simplifying the manufacturing process. Moreover, if the card seat 211 includes a first mounting cover detachably connected to the first receiving groove a1 and a second mounting cover detachably connected to the third receiving groove d0, the two mounting covers may be integrated, that is, one mounting cover may be used to realize the functions thereof, thereby simplifying the manufacturing process and improving the dismounting efficiency.

Furthermore, the MT card holder can be plugged and unplugged and is detachably connected with the MT optical fiber, so that the assembly of the single board can be conveniently carried out before the optical communication equipment leaves a factory, and the quick maintenance of devices in the single board can be conveniently carried out after the optical communication equipment leaves the factory.

The traditional MT card holder and the MT optical fiber can be connected in a gluing mode. However, the splicing mode can not realize the disassembly of the MT card holder and the MT optical fiber, so that any one of the MT card holder and the MT optical fiber can not be replaced when in failure, the service lives of the MT card holder and the MT optical fiber are shortened, and the maintenance cost is reduced.

The MT clamping that this application embodiment provided because the MT clamping can dismantle with MT optic fibre and be connected, when improving dismouting efficiency, can realize maintenance and the replacement of MT clamping and MT optic fibre, reduce use cost.

After being connected with the MT optical fiber, the traditional MT card holder can be connected with an MT port in a fixed connection mode. However, if the MT card holder is damaged, the MT optical fiber and the corresponding MT port may not be used, and the adapter module or the board where the MT port is located needs to be replaced as a whole, which increases the use cost of the whole optical communication device.

The MT card holder that this application embodiment provided, but because MT card holder and MT optical fiber connection back are connected with MT port plug, in case the MT card holder breaks down, can pull out the MT card holder replacement can, reduced optical communication equipment's use cost.

Fig. 16 is a schematic flowchart of an MT card holder assembling method according to an embodiment of the present application, which is applied to the MT card holder according to the foregoing embodiment of the present application. The MT clamp is used for being connected with an MT optical fiber, the MT optical fiber comprises an optical fiber head and a tail optical fiber which are connected with each other, and a guide hole is formed in the optical fiber head. The MT card holder includes: the first end and the second end of the guide rod are two ends opposite to the guide rod, and the clamping seat is internally provided with an accommodating part. The MT card holder may be the MT card holder 21 provided in any of the preceding embodiments. As shown in fig. 16, the MT card holder assembling method includes:

s301, obtaining a clamping seat fixedly connected with the first end of the guide rod.

Referring to fig. 3, 4, 13 or 15, the first end 212a of the guide rod 212 may be fixedly connected to the socket 211 in various ways. There are various ways of obtaining the clamping base connected with the guide rod. The examples of the present application are illustrated by the following examples:

in an alternative mode, the first end 212a of the guide rod 212 is fixedly connected with the clamping seat 211 by welding. The welded clamping seat is directly obtained, and the clamping seat connected with the guide rod can be obtained.

In another alternative, if the guide rod 212 is fixedly connected with the clamping seat 211 in an integrated manner, the clamping seat connected with the guide rod can be obtained by directly obtaining the clamping seat connected with the guide rod. If the guide rod 212 can be fixedly connected with the first supporting seat 211a by integral molding, the connected guide rod 212 and the first supporting seat 211a are obtained, and then the clamping seat connected with the guide rod is obtained by assembling based on the first supporting seat 211 a. The assembly process of the cartridge is referred to hereinafter.

In yet another alternative, the first end 212a of the guide rod 212 is fixedly coupled to the socket 211 by a threaded coupling, so as to obtain a socket coupled to the guide rod.

In still another alternative, the first end 212a of the guide rod 212 is fixedly connected to the clamping seat 211 in a clamping manner, so as to obtain a clamping seat connected to the guide rod. Referring to fig. 15, the fifth clamping portion d1 and the sixth clamping portion d2 of the guide rod 212 are clamped, so that the guide rod 212 is fixedly connected with the clamping seat 211. Optionally, the card socket 211 further includes a third receiving groove d0, and the third receiving groove d0 has a side opening. The guide 212 is fitted in the holder 211 through the side opening. Optionally, the card seat 211 further includes: a second mounting cap. After the first end of the guide rod 212 is assembled in the third receiving groove d0, the second mounting cover is mounted at the side opening to form a cavity with at least one open end and a closed side with the card seat 211. In this way, the second mounting cover may also provide a certain supporting and limiting effect for the guide rod 212, reducing the displacement of the guide rod 212 in the non-target direction.

As described above, the holder 211 may be an integral structure as shown in fig. 3, or may be a detachable structure as shown in any one of fig. 4 to 13. When the card holder 211 is a detachable structure, each component thereof needs to be assembled to obtain the card holder. For example, the cassette 211 includes: a first supporting seat 211a, a second supporting seat 211b and a connecting rod 211c. The process of assembling the obtained card seat comprises the following steps: the first supporting seat and the second supporting seat are connected through a connecting rod, and the connected first supporting seat and the second supporting seat are arranged along the extending direction of the guide rod. For example, connecting one end of the connecting rod 211c with the first supporting seat 211a and connecting the other end of the connecting rod 211c with the second supporting seat 211b can realize the connection of the first supporting seat and the second supporting seat through the connecting rod.

The first supporting seat is provided with a first sub-groove, the second supporting seat is provided with a second sub-groove, the first supporting seat and the second supporting seat are connected through a connecting rod, and the first sub-groove is communicated with the second sub-groove to form an accommodating part.

As mentioned above, there are various ways for connecting the first supporting seat 211a and the second supporting seat 211b through the connecting rod 211c, and the following are taken as examples in the embodiment of the present application:

in an alternative implementation manner, the first supporting seat 211a and the second supporting seat 211b can be fixedly connected through the connecting rod 211c. In an alternative example, the connecting rod 211c is clamped to fixedly connect the first supporting seat 211a and the second supporting seat 211b. For example, a part of the connection rod 211c is clamped in the first support seat 211a, so that the clamped connection rod 211c and the first support seat 211a are fixed, and another part of the connection rod 211c is clamped in the second support seat 211b, so that the clamped connection rod 211c and the second support seat 211b are fixed. In another alternative example, the connecting rod 211c is screwed to fixedly connect the first supporting seat 211a and the second supporting seat 211b. For example, one end of the connecting rod 211c is screwed with the first supporting seat 211a to fixedly connect the one end with the first supporting seat 211a, and the other end of the connecting rod 211c is screwed with the second supporting seat 211b to fixedly connect the other end with the second supporting seat 211b. In yet another alternative example, the connecting rod 211c is screwed and clamped to fixedly connect the first supporting seat 211a and the second supporting seat 211b. For example, one end of the connection rod 211c is screwed to one of the first and second supporting

seats

In another alternative implementation manner, the first supporting seat 211a and the second supporting seat 211b can be movably connected through the connecting rod 211c by the connecting rod 211c. For example, a portion of the connection rod 211c is engaged with the first support seat 211a, and another portion of the connection rod 211c is engaged with the second support seat 211b. The connecting rod 211c and the first support seat 211a after being clamped can generate a relative displacement of a first distance in the target direction x, and the connecting rod 211c and the second support seat 211b after being clamped generate a relative displacement of a second distance in the target direction x. Or, one end of the connecting rod 211c is fixedly connected (e.g., clamped or screwed) to one of the first supporting seat 211a and the second supporting seat 211b, and the other end of the connecting rod 211c is clamped to the other one of the first supporting seat 211a and the second supporting seat 211b, so that the clamped connecting rod 211c and the other one can generate a relative displacement of a preset distance in the target direction x.

For example, as shown in fig. 5 to 10, the connection rod 211c includes a rod c0, and a first clamping portion c1 and a second clamping portion c2 at two ends of the rod c 0. The first supporting seat 211a has a first receiving groove a1, and the second supporting seat 211b has a second receiving groove b1. The first receiving groove a1 has a third engaging portion a11, and the second receiving groove b1 has a fourth engaging portion b11. Then pass through the process that the connecting rod is connected first supporting seat and second supporting seat, include: a part of the connection rod 211c is installed in the first accommodation groove a1, and the first clamping portion c1 is clamped with the third clamping portion a11, and the other part of the connection rod 211c is installed in the second accommodation groove b1, and the second clamping portion c2 is clamped with the fourth clamping portion b11.

As shown in fig. 5 or fig. 6, the first receiving groove a1 has a first side opening a12, and the second receiving groove b1 has a second side opening b12. A portion of the connection bar 211c may be installed in the first accommodation groove a1 through the first side opening a 12; the other portion of the connection bar 211c is fitted in the second accommodation groove b1 through the second side opening b12. Through set up the side opening at the storage tank, can assemble connecting rod 211c from the side to the storage tank in, realize the rapid Assembly of connecting rod, improve dismouting efficiency.

S302, inserting the second end of the guide rod into the guide hole from one end, close to the tail fiber, of the guide hole of the optical fiber head, and enabling the second end of the guide rod to be exposed from one end, far away from the tail fiber, of the guide hole.

And S303, passing the tail fiber of the MT optical fiber through the accommodating part in the card seat.

Optionally, the MT card holder and the MT optical fiber after connection, that is, the MT plug, are used for inserting an MT port of the MT to MPO adapter. As shown in fig. 1, the MT card holder 21 is connected to the MT optical fiber 22, and is used to be inserted into the MT port 11 of the MT-to-MPO adapter 1, and a card slot is formed in an inner wall of the MT port 11. Fig. 13 is a schematic structural diagram of an MT card holder 21 according to an embodiment of the present application. Corresponding to the structure of the MT port 11, the card holder 211 has a card fin 211d, and the card fin 211d is provided with a buckle d1. On this basis, as shown in fig. 16, the method further includes:

s304, when the connected MT card holder and the MT optical fiber are required to be inserted into an MT port, thrust in a target direction is applied to the card holder, so that the buckle is clamped with a card slot in the MT-to-MPO adapter, and the target direction is the direction in which the guide rod is inserted into the guide hole.

S305, when the MT clamp and the MT optical fiber after connection need to be pulled out of an MT port, pressure towards the clamp seat is applied to the clamp fin, and the clamp buckle is driven by the clamp fin to release clamping with the clamp groove.

As shown in fig. 6, in the embodiment of the present application, on the basis that the first supporting seat 211a and the second supporting seat 211b are movably connected by the connecting rod 211c, the MT holder 21 may further include: an elastic element 213. Assuming that the first end of the guide bar is fixedly connected with the first support base, before the aforementioned S302, the following procedure may also be performed to perform the fitting of the MT holder: the elastic element 213 is installed in the card seat 211, so that the elastic element 213 deforms through moving in the target direction x after the second supporting seat 211b receives the thrust F1 in the target direction x, the deformed elastic element transmits the thrust to the first supporting seat 211a, and provides the second supporting seat 211b with an elastic force opposite to the target direction x, where the target direction x is a direction in which the guide rod is inserted into the guide hole.

The mode of installing the elastic element in the clamping seat can at least comprise the following two assembling modes:

in a first assembly, at least part of the elastic element is mounted between the first support and the second support. The first assembly relationship shown in fig. 7 to 9 can be achieved by this first assembly. The specific assembly process may refer to the corresponding processes in fig. 7 to 9. For example, if the process of connecting the first supporting seat and the second supporting seat through the connecting rod in S301 is realized by the clamping of the first clamping portion and the third clamping portion, and the clamping of the second clamping portion and the fourth clamping portion. The process of mounting at least part of the elastic element between the first support seat and the second support seat may comprise: after the first receiving groove a1 and the second receiving groove b1 are connected by the connecting rod, two ends of the elastic element 213 are respectively abutted against the third clamping portion a11 and the fourth clamping portion b 11; alternatively, two ends of the elastic element 213 are respectively abutted against one surface of the first supporting seat 211a facing the second supporting seat 211b and the fourth clamping portion b 11; alternatively, both ends of the elastic element 213 are respectively abutted against the third engaging portion a11 and one surface of the second supporting seat 211b facing the first supporting seat 211 a.

In a second assembly, the elastic element is mounted in the first support seat and/or the elastic element is mounted in the second support seat. The second assembled relationship shown in fig. 10 can be achieved by this second assembly. The specific assembly process may refer to the corresponding process in fig. 10.

Alternatively, the elastic element is a spring, such as a compression spring, and the spring may be sleeved on the rod body before the first supporting seat and the second supporting seat are connected by the connecting rod in the aforementioned S301. The connection rod 211c can reduce the vibration of the elastic member 213 in the radial direction thereof, and maintain the stability of the elastic member 213.

For the convenience of the reader, the following description will be made by taking the assembly process of the MT card holder 21 shown in fig. 6 as an example, and it is assumed that the card holder 211 in the MT card holder 21 shown in fig. 6 is connected to the guide rod 212 in the manner shown in fig. 15. First, the first end of the guide bar 212 is assembled in the first supporting seat 211a from the side opening of the third receiving groove d0 of the first supporting seat 211a, so that the fifth clamping portion d1 is clamped with the sixth clamping portion d2, thereby fixedly connecting the first end of the guide bar 212 with the first supporting seat 211 a. Then, the spring is sleeved on the rod body of the connecting rod 211 c; then, a portion of the connection rod 211c is fitted in the first receiving groove a1 through the first side opening a12, and the first engaging portion c1 is engaged with the third engaging portion a11, and the other portion of the connection rod 211c is fitted in the second receiving groove b1 through the second side opening b12, and the second engaging portion c2 is engaged with the fourth engaging portion b11. Finally, the pigtail of the MT fiber is passed through the receptacle W in the cassette 211.

Fig. 17 is a schematic flowchart of a method for detaching an MT card holder according to an embodiment of the present application, where the method is applied to an MT card holder that is plugged in an MT port and connected to an MT optical fiber. The MT clamp is used for being connected with an MT optical fiber, the MT optical fiber comprises an optical fiber head and a tail optical fiber which are connected with each other, and a guide hole is formed in the optical fiber head. The MT card holder includes: the first end and the second end of the guide rod are two ends opposite to the guide rod, and the clamping seat is internally provided with an accommodating part. The MT card holder may be the MT card holder 21 provided in any of the preceding embodiments. As shown in fig. 17, the MT card holder detaching method includes:

s401, taking out the tail fiber of the MT optical fiber from the accommodating part in the card seat.

S402, pulling the clamping seat fixedly connected with the first end of the guide rod to enable the second end of the guide rod to be pulled out of the guide hole of the optical fiber head.

The MT holder and the MT optical fiber can be separated by pulling the guide rod out of the guide hole of the optical fiber head.

Alternatively, if the first end 212a of the guide rod 212 is fixedly connected with the socket 211 by a detachable connection manner, the guide rod 212 can be detached from the socket 211 by a disconnection manner. Referring to fig. 15, the first end 212a of the guide rod 212 is fixedly connected to the card seat 211 in a clamping manner, and the fifth clamping portion d1 and the sixth clamping portion d2 of the guide rod 212 are released from clamping, so that the guide rod 212 is released from the card seat 211. Optionally, the card socket 211 further includes a third receiving groove d0, and the third receiving groove d0 has a side opening. The guide 212 is taken out of the holder 211 through the side opening. Optionally, the card seat 211 further includes: a second mounting cover located at the side opening. The second cover may be removed from the side opening and the guide 212 may be removed from the holder 211 through the side opening.

If the holder 211 is a detachable structure, the parts thereof need to be detached to obtain the parts of the holder. For example, the cassette 211 includes: a first supporting seat 211a, a second supporting seat 211b and a connecting rod 211c. The process of disassembling the cartridge includes: and taking the connecting rod out of the first supporting seat and the second supporting seat. For example, both ends of the connection rod 211c are respectively taken out of the first and second supporting

seats

211a and 211b by releasing the connection.

As shown in fig. 5 or fig. 6, the first receiving groove a1 has a first side opening a12, and the second receiving groove b1 has a second side opening b12. A portion of the connection bar 211c can be taken out of the first accommodation groove a1 through the first side opening a 12; the other portion of the connection bar 211c is taken out of the second accommodation groove b1 through the second side opening b12. Through set up the side opening at the storage tank, can take out connecting rod 211c from the storage tank in the side, realize the quick dismantlement of connecting rod, improve dismouting efficiency.

As shown in fig. 6, in the embodiment of the present application, on the basis that the first supporting seat 211a and the second supporting seat 211b are movably connected by the connecting rod 211c, the MT holder 21 may further include: an elastic element 213. Then, the following procedure can also be performed to effect the detachment of the MT cardholder: the elastic member 213 is removed from the holder 211. For example, when the elastic member 213 is a spring, the spring is fitted to the connecting rod, and after the connecting rod is removed from the first and second support seats, the fitting between the spring and the connecting rod can be released.

Fig. 18 is a schematic diagram of a result of detachment of the MT card holder 21 shown in fig. 13 according to an embodiment of the present application. As shown in fig. 18, the first supporting seat 211a, the second supporting seat 211b, the connecting rod 211c and the elastic element 213 are obtained by disassembling the clamping seat 211. All the parts can be repaired and replaced, the service life of the MT card holder is prolonged, and the maintenance cost is reduced. And each part has smaller volume, thus reducing the occupation of space.

The flow of the MT card holder detaching method provided in the embodiment of the present application is opposite to the flow of the MT card holder assembling method, so that reference may be made to the reverse flow of the MT card holder assembling method, which is not described in detail in the embodiment of the present application.

It should be noted that, in the methods provided in the embodiments of the present application, such as the MT card holder assembling method or the MT card holder disassembling method, the order of the steps may be appropriately adjusted, and the steps may also be increased or decreased according to the circumstances.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific steps of the method described above may refer to the corresponding processes in the foregoing device embodiments, and are not described herein again.

Fig. 19 is a schematic structural diagram of an adapter assembly 0 according to an embodiment of the present application, where the adapter assembly 0 includes:

the MT changes MPO adapter 1, and the MT changes MPO adapter 1 is provided with an MT port 11. The adapter assembly 0 includes one or more MT to MPO adapters 1, and fig. 19 illustrates an example in which the adapter assembly 0 includes a plurality of MT to MPO adapters 1.

An MT plug 2, the MT plug 2 includes an MT fiber 22 and an MT card holder 21 connected, the MT plug 2 is plugged on an MT port of the MT to MPO adapter 1, the MT card holder 21 is any one of the MT card holders 21 provided in the embodiments of the present application.

The MT-to-MPO adapter 1 further includes an MPO port, and the MPO port is used for connecting to an MPO plug.

According to the adapter assembly provided by the embodiment of the application, after the clamping seat is connected with the MT optical fiber through the guide rod fixed on the clamping seat, the tail optical fiber penetrates through the accommodating part of the clamping seat, and therefore the MT clamping seat and the MT optical fiber can be assembled. Therefore, the disassembly and the assembly of special tools are not needed, and the disassembly and the assembly efficiency are effectively improved. And the MT card holder has a simpler structure and occupies less space, and the whole miniaturization of the MT plug can be realized, so that the size of the adapter component is correspondingly reduced, and the whole miniaturization of the adapter component is realized.

Moreover, as the MT clamp is detachable, when a certain part of the adapter assembly has the problems of abrasion and the like, the part can be replaced, thereby prolonging the service life of the clamp seat and reducing the maintenance cost.

The embodiment of the present application further provides a board, where the board may be a router board or an exchange board. The single board can support communication in a communication mode of light emitting of the board optical module or the chip. The veneer comprises: a plurality of adapter assemblies, which are adapter assemblies 0 provided in the foregoing embodiments of the present application. The single plate has an opening over which the plurality of adapter assemblies are mounted by a flange. And each adapter assembly in the single board is used for plugging with the MPO plug. For example, an exploded view of the single board plugged with the MPO plug may be as shown in fig. 1. This is not described in detail in the embodiments of the present application.

The embodiment of the present application further provides an optical communication device, where the optical communication device includes one or more boards as described above, and the optical communication device may be a router or a switch.

The term "and/or" in this application is only one kind of association relationship describing the associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In this application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless explicitly defined otherwise. "A refers to B" and means that A is the same as B or A is simply modified based on B.

The above description is only exemplary of the present application and should not be taken as limiting, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An MT card holder, wherein said MT card holder is adapted to connect with an MT optical fiber, said MT optical fiber comprising an optical fiber stub and a pigtail that are connected to each other, said optical fiber stub having a guiding hole thereon, said MT card holder comprising: a clamping seat and a guide rod;

the first end of the guide rod is fixedly connected with the clamping seat, and the second end of the guide rod is configured as follows: one end of the guide hole of the optical fiber head, which is close to the tail fiber, is spliced with the guide hole, one end of the guide hole, which is far away from the tail fiber, is exposed, and the first end and the second end of the guide rod are two opposite ends of the guide rod;

the card seat is internally provided with a containing part which is configured to pass the tail fiber of the MT optical fiber after the guide rod is plugged with the guide hole.

2. An MT cardholder according to claim 1, characterised in that said card holder comprises: the first supporting seat, the second supporting seat and the connecting rod;

the first supporting seat and the second supporting seat are connected through the connecting rod, and the connected first supporting seat and the second supporting seat are arranged along the extending direction of the guide rod;

the first supporting seat is provided with a first sub-groove, the second supporting seat is provided with a second sub-groove, and the first supporting seat and the second supporting seat are communicated through the connecting rod to form the accommodating part after being connected through the connecting rod.

3. An MT card holder according to claim 2, wherein the first end of the guide rod is fixedly connected to the first support base, the MT card holder further comprising: the elastic element is positioned in the clamping seat;

the second support seat is further configured to: after receiving the thrust in the target direction, the elastic element is deformed by moving in the target direction, wherein the target direction is the insertion direction of the guide rod and the guide hole;

the elastic element is configured to: after the deformation is generated, the elastic element transmits the thrust to the first supporting seat and provides elastic force opposite to the target direction to the second supporting seat.

4. The MT clip of claim 3, wherein after the connecting bar is snapped into the first receiving groove and the second receiving groove, at least a portion of the elastic element is located between the first support seat and the second support seat;

and/or after the connecting rod is clamped in the first accommodating groove and the second accommodating groove, the elastic element is positioned in the first supporting seat, and/or the elastic element is positioned in the second supporting seat.

5. An MT cardholder according to claim 4, characterised in that the connection rod comprises a rod body and a first and a second snap-in part at both ends of the rod body;

the first supporting seat is provided with a first accommodating groove, and the second supporting seat is provided with a second accommodating groove;

the first accommodating groove is configured to accommodate one part of the connecting rod and is provided with a third clamping part clamped with the first clamping part, and the second accommodating groove is configured to accommodate the other part of the connecting rod and is provided with a fourth clamping part clamped with the second clamping part;

after the connecting rod is clamped in the first accommodating groove and the second accommodating groove, two ends of the elastic element are respectively abutted against the third clamping part and the fourth clamping part; or two ends of the elastic element are respectively abutted with the third clamping part and one surface of the second supporting seat facing the first supporting seat; or the two ends of the elastic element are respectively abutted against one surface of the first supporting seat facing the second supporting seat and the fourth clamping part.

6. An MT cardholder according to claim 5, characterised in that the elastic element is a compression spring which is sleeved on the rod body.

7. The MT card holder according to claim 5 or 6, wherein one of the first and third clamping parts is a clamping protrusion, and the other is a clamping groove;

and/or, the second joint portion with one of fourth joint portion is the joint arch, and another is the joint recess.

8. The MT clamping of claim 7, wherein the connecting rod is a columnar structure with different diameters, the two ends of the connecting rod are columnar clamping protrusions, and the third clamping portion and the fourth clamping portion are clamping grooves with columnar cavities.

9. The MT clip according to any one of claims 5 to 8, wherein the first receiving groove has a first side opening, the second receiving groove has a second side opening, the first receiving groove is configured to receive a portion of the connecting bar through the first side opening, and the second receiving groove is configured to receive another portion of the connecting bar through the second side opening.

10. The MT clip according to any of claims 3 to 9, wherein said connecting rod has a stopper portion in a middle portion thereof, said stopper portion being configured to limit a moving distance of said connecting rod in said receiving portion.

11. The MT card holder according to any one of claims 1 to 10, wherein the MT card holder is connected with the MT optical fiber and is used for being inserted into an MT port of an MT multi-push MPO adapter, and a card slot is formed in the inner wall of the MT port;

the clamping seat is provided with a clamping fin, a buckle is arranged on the clamping fin, and the buckle is configured as follows: after the card seat is pushed in a target direction, the card seat is clamped with a card slot in the MT-to-MPO adapter, and the target direction is the inserting direction of the guide rod and the guide hole;

after the clamping fins are pressed towards the clamping seat, the clamping with the clamping grooves is released under the driving of the clamping fins.

12. An MT cardholder according to claim 11, characterised in that said snap wings are unilateral snap wings.

13. The MT card holder according to any of claims 1 to 12, wherein said MT card holder is adapted to be inserted into an MT port of an MT to MPO adapter after being connected to said MT fiber, said MT port having a guide groove on an inner wall thereof;

the cassette is provided with a guide pin which is configured to be clamped with the guide groove.

14. The MT card holder according to any of claims 1 to 13, wherein said guide bar has a fifth engaging portion at a first end thereof, and said card holder has a sixth engaging portion, said guide bar being fixedly connected to said card holder by engaging said fifth engaging portion with said sixth engaging portion.

15. An adapter assembly, comprising:

MT changes MPO adapter;

an MT plug including an MT optical fiber and an MT card holder connected with each other, wherein the MT plug is plugged into an MT port of the MT to MPO adapter, and the MT card holder is the MT card holder according to any one of claims 1 to 14.

16. An MT card holder assembling method, wherein the MT card holder is used for connecting with an MT optical fiber, the MT optical fiber comprises an optical fiber head and a tail optical fiber which are connected with each other, the optical fiber head is provided with a guide hole, and the MT card holder comprises: the clamp seat and the guide rod are arranged, and an accommodating part is arranged in the clamp seat; the method comprises the following steps:

obtaining a clamping seat fixedly connected with the first end of the guide rod;

inserting a second end of the guide rod into the guide hole from one end, close to the tail fiber, of the guide hole of the optical fiber head, exposing the second end of the guide rod from one end, far away from the tail fiber, of the guide hole, and enabling the first end and the second end of the guide rod to be two opposite ends of the guide rod;

and passing the tail fiber of the MT optical fiber through a containing part in the clamping seat.

17. The method of claim 16, wherein the cartridge comprises: the first supporting seat, the second supporting seat and the connecting rod; the method further comprises the following steps:

connecting the first supporting seat and the second supporting seat through the connecting rod, wherein the first supporting seat and the second supporting seat after connection are arranged along the extending direction of the guide rod;

18. The method according to claim 17, wherein the first end of the guide bar is fixedly attached to the first support base, the MT clip further comprising: an elastic element; the method further comprises the following steps:

the elastic element is installed in the clamping seat, so that after the second supporting seat is subjected to thrust in a target direction, the elastic element deforms through movement in the target direction, after the deformation occurs, the elastic element transmits the thrust to the first supporting seat and provides elastic force opposite to the target direction to the second supporting seat, and the target direction is the direction in which the guide rod is inserted into the guide hole.

19. The method of claim 18, wherein said installing the resilient element in the cartridge comprises: mounting at least part of the resilient element between the first support seat and the second support seat;

and/or the elastic element is arranged in the first supporting seat, and/or the elastic element is arranged in the second supporting seat.

20. The method of claim 19, wherein the connecting rod comprises a rod body and first and second snap portions at opposite ends of the rod body; the first support seat is provided with a first accommodating groove, the second support seat is provided with a second accommodating groove, the first accommodating groove is provided with a third clamping part, and the second accommodating groove is provided with a fourth clamping part;

with first supporting seat with the second supporting seat passes through the connecting rod is connected, includes:

installing one part of the connecting rod in the first accommodating groove, clamping the first clamping part with the third clamping part, installing the other part of the connecting rod in the second accommodating groove, and clamping the second clamping part with the fourth clamping part;

said mounting at least part of said resilient element between said first support seat and said second support seat comprises:

after the first accommodating groove and the second accommodating groove are connected through the connecting rod, two ends of the elastic element are respectively abutted against the third clamping part and the fourth clamping part; or, two ends of the elastic element are respectively abutted against the third clamping part and one surface of the second supporting seat facing the first supporting seat; or the two ends of the elastic element are respectively abutted against one surface of the first supporting seat facing the second supporting seat and the fourth clamping part.

21. The method of claim 20, wherein the resilient element is a compression spring, and prior to said connecting the first and second support blocks by the connecting rod, the method further comprises:

and sleeving the compression spring on the rod body.

22. The method of claim 20 or 21, wherein said first receiving cavity has a first side opening, said second receiving cavity has a second side opening,

the installing a portion of the connection rod in the first accommodation groove includes:

installing a portion of the connecting rod in the first accommodating groove through the first side opening;

the installing another part of the connecting rod in the second receiving groove includes:

and installing another part of the connecting rod in the second accommodating groove through the second side opening.

23. The method according to any one of claims 16 to 22, wherein the MT holder is configured to be inserted into an MT port of an MT-to-multi-push MPO adapter after being connected to the MT fiber, and an inner wall of the MT port is provided with a card slot; the clamping seat is provided with a clamping fin, and a buckle is arranged on the clamping fin; the method further comprises the following steps:

when the MT card holder and the MT optical fiber which are connected are required to be inserted into the MT port, thrust in a target direction is applied to the card holder, so that the buckle is clamped with a card slot in the MT-to-MPO adapter, and the target direction is the direction in which the guide rod is inserted into the guide hole;

when the MT clamp and the MT optical fiber which are connected need to be pulled out of the MT port, pressure towards the clamp seat is applied to the clamp fin, and the clamp buckle is driven by the clamp fin to be released from clamping with the clamp groove.

24. The method of any one of claims 16 to 23, further comprising:

and the first end of the guide rod is fixedly connected with the clamping seat in a clamping manner.