CN201373930Y - A kind of MT ferrule optical fiber connector and its connector housing - Google Patents

Abstract

The utility model relates to an MT ferrule optical fiber connector. The connector includes a shell, and at least one channel extending through the front and rear end faces of the shell along the connector insertion direction is arranged in the shell, and the two ends of the channel are respectively connected to The insertion end of the device and the cable entry end, the channel has an MT pin installation cavity close to the insertion end and a spring installation cavity close to the cable entry end, and the one-way thrust plug in the MT pin installation cavity Equipped with MT pins, the MT pin mounting cavity is provided with a pin retraction gap on the side close to the spring mounting cavity, and the corresponding pressure in the spring mounting cavity is provided with a spring that is pressed between the shell and the tail of the MT pin, so The casing includes a front casing and a rear casing that are fixedly connected together. The optical fiber connector of this solution only needs to insert the connector connecting the optical fiber to be connected with the corresponding connector to meet the requirements of optical signal transmission, and the operation is simple and the connection efficiency is high.

Description

A kind of MT ferrule optical fiber connector and its connector shell

technical field

The utility model relates to an optical fiber connector, in particular to an optical fiber connector using MT pins, and also relates to a housing of the connector.

Background technique

At present, optical fiber connections based on MT ferrules occupy a dominant position in the field of optical signal transmission. US Patent US7090408 discloses a connection form of MT pins as follows, as shown in Figure 1, there are two MT pins, one is male MT pin 10L, the other is female MT pin 10R, after the two MT pins are inserted Extend along a straight line as shown in Figure 2, after that, two pairs of inserted MT pins are correspondingly assembled into a housing, as shown in Figure 3, the housing includes a lower housing 100 and a cover 200, the lower The housing 100 and a cover 200 are fixedly connected together by screws. The left end of the inner surface of the cover 200 is fixed with a wire-passing end platform 300 . A spring 400 is interposed therebetween. Connecting two MT pins in this way can ensure the reliability of the connection and the durability of use, but the operation of connecting two MT pins in this way is cumbersome and the work efficiency is low. After a period of time, it is necessary to clean and maintain the connection end face of the optical fiber. When cleaning and maintaining the MT ferrule in the connection method of the above scheme, it is necessary to remove the cover 200 fixed on the lower housing 100 by screws before taking out the MT ferrule. , this operation is also cumbersome and the work efficiency is low.

Utility model content

The purpose of this utility model is to provide a kind of MT ferrule optical fiber connector, and also provide a kind of connector housing at the same time, in order to solve the current problem of installing two MT ferrules that are inserted in the same housing, during installation and in the future The problems of cumbersome operation and low work efficiency in cleaning and maintenance.

In order to achieve the above purpose, the utility model adopts the following technical solution: an MT ferrule optical fiber connector, the connector includes a housing, and the housing is provided with at least one channel extending through the front and rear end faces of the housing along the connector insertion direction, The two ends of the passage correspond to the plug-in end and the cable entry end of the connector respectively, and the passage has an MT pin installation cavity close to the plug-in end and a spring installation cavity close to the cable entry end. The MT plug The one-way thrust plug in the pin installation cavity is equipped with MT pins, and the side of the MT pin installation cavity close to the spring installation cavity is provided with a pin retraction gap, and the corresponding pressure in the spring installation cavity is provided with a top pressure between the shell and the MT The spring between the tails of the pins, the housing includes a front housing and a rear housing that are fixedly connected together.

The front end of the front housing corresponds to the plug-in end of the connector, and guide holes and/or guide pins are provided on the front end.

Corresponding positioning holes or positioning pins are respectively provided on the connecting and matching surfaces of the front and rear shells.

The front shell and the rear shell are detachably connected together by screws.

The MT pins are push-fitted into the housing through a limit structure arranged in the MT pin installation cavity to prevent the MT pins from moving to the connector insertion end, the limit structure is a step limit structure, The step-limiting structure is formed by the transition from large to small hole profiles at the butt joints of the passages in the front and rear housings.

An MT ferrule fiber optic connector housing, the housing includes a front housing and a rear housing that are fixedly connected together, and at least one channel extending through the front and rear end surfaces of the housing along the connector insertion direction is provided in the housing , the two ends of the channel respectively correspond to the plug-in end and the cable entry end of the connector, and the channel has an MT pin installation cavity close to the plug-in end and a spring installation cavity close to the cable entry end, the MT There is an MT pin limit structure in the pin installation cavity.

Guide holes and/or guide pins are provided on the front end surface of the front housing.

Corresponding positioning holes or positioning pins are respectively provided on the connecting and matching surfaces of the front and rear shells.

The front shell and the rear shell are detachably connected together by screws.

The MT pin limit structure is a step limit structure, which is formed by the passages in the front and rear housings at the butt joints where the hole contours change from large to small.

The optical fiber connector of the present utility model only needs to insert the connector connected with the optical fiber to be connected with the corresponding connector to meet the requirement of optical signal transmission, and the operation is simple and the connection efficiency is high. In addition, guide holes and/or guide keys for guidance are provided on the insertion end face of the optical fiber connector of this solution, and the guide holes and/or guide keys provide guide support for fast and precise insertion of two optical fiber connectors. In addition, a spring with two ends respectively acting on the tail of the MT ferrule and the shell is clamped in the spring installation cavity. When the two optical fiber connectors are inserted, the spring is compressed axially in the spring installation cavity, and the spring is installed The cavity limits the circumferential direction of the spring to prevent the middle part of the spring from protruding outward when it is under pressure. The middle part of the spring does not protrude when it is under pressure, which improves the anti-vibration ability of the connector and ensures that the two MT pins Good contact on the end face.

Description of drawings

Fig. 1 is a structural schematic diagram of two MT pin insertions in the prior art;

Fig. 2 is a structural schematic diagram of the prior art after two MT pins are connected;

Fig. 3 is a schematic diagram of the explosive structure installed in the casing after two MT pins are plugged in the prior art;

Fig. 4 is a structural schematic diagram of the utility model MT pin fiber optic connector;

Fig. 5 is a schematic diagram of the three-dimensional structure of the MT ferrule fiber optic connector of the present invention;

Fig. 6 is a three-dimensional sectional view of the rear casing of the present invention;

Fig. 7 is a schematic structural view of the connector housing of the present invention.

Detailed ways

The MT ferrule fiber optic connector of the present invention shown in Fig. 4, Fig. 5 and Fig. 6 includes a housing, and the housing has a channel 12 extending along the connector insertion direction and passing through the front and rear end surfaces of the housing. The housing is composed of a front housing 1 and a rear housing 2 that are fastened together by screws 14. The front housing 1 is provided with a guide hole 8 that runs through the front and rear end faces of the front housing 1. The front end of the rear housing 2 Positioning pins 7 corresponding to the guide holes 8 are provided on the surface relative to the guide holes 8 . The front end of the channel 12 has an MT pin installation cavity, the MT pin installation cavity is a stepped square hole with a small front and a large rear, and the MT pin installation cavity is inserted with a MT through the stepped surface 13 of the stepped square hole. Pin 4, the MT pin installation cavity at the tail of MT pin 4 is provided with a MT pin retraction gap 6, and the channel 12 is provided with a spring installation cavity 5 adjacent to the MT pin installation cavity, and the corresponding pressure in the spring installation cavity 5 A spring 3 is provided, one end of the spring 3 is in contact with the rear housing 2 , and the other end is in contact with the tail of the MT pin 4 .

The connector housing of the present invention shown in FIG. 7 includes a front housing 1 and a rear housing 2 fastened together by screws 14 . The housing is provided with a channel 12 extending along the connector insertion direction and passing through the front and rear end faces of the housing. The channel 12 has an MT pin installation cavity 30 close to the front housing 1 end and a spring installation cavity 5 close to the rear housing end. A guide hole 8 passing through the front housing is provided on the front housing, and a positioning pin 7 corresponding to the guide hole 8 is provided on the front end surface of the rear housing 2 relative to the guide hole 8 . There is a step limit structure 13 in the MT ferrule installation cavity 30, and the step limit structure 13 is formed by the passage 12 in the front and rear housings at the butt joint, where the contours of the holes change from large to small.

Claims (10)

1. MT contact pin joints of optical fibre, this connector comprises housing, be provided with at least one in the housing and extend the passage that connects the housing front/rear end along connector grafting direction, it is characterized in that: the two ends of the described passage inserted terminal and the cable of corresponding connector respectively feed end, have the MT contact pin installation cavity of close inserted terminal and the spring installation cavity that feeding is held near cable in the described passage, unidirectional thrust is inserted with the MT contact pin in the described MT contact pin installation cavity, be provided with contact pin rollback gap near spring installation cavity one side in the MT contact pin installation cavity, the corresponding pressure is provided with the spring of roof pressure between housing and MT contact pin afterbody in the spring installation cavity, and described housing comprises procapsid and the back casing that is solidly connected together.

2. the joints of optical fibre according to claim 1 is characterized in that: the inserted terminal of the corresponding connector of the front end face of described procapsid, front end face is provided with pilot hole and/or guide finger.

3. the joints of optical fibre according to claim 1 and 2 is characterized in that: the pilot hole or the register pin that are respectively equipped with corresponding matching on the connection mating surface of described forward and backward housing.

4. the joints of optical fibre according to claim 3 is characterized in that: described procapsid is in the same place by removable being solidly connected of screw with back casing.

5. the joints of optical fibre according to claim 4, it is characterized in that: the position limiting structure thrust inserting that described MT contact pin moves to the connector inserted terminal by the block MT contact pin that is arranged in the MT contact pin installation cavity is in housing, described position limiting structure is the step position limiting structure, and this step position limiting structure is excessively to be formed from large to small at the hole of joint profile by the passage in the housing of front and back.

6. MT contact pin joints of optical fibre housing, it is characterized in that: described housing comprises procapsid and the back casing that is solidly connected together, be provided with at least one in this housing and extend the passage that connects the housing front/rear end along connector grafting direction, the two ends of the described passage inserted terminal and the cable of corresponding connector respectively feed end, have the MT contact pin installation cavity of close inserted terminal in the described passage and feed the spring installation cavity of holding, be provided with MT contact pin position limiting structure in the described MT contact pin installation cavity near cable.

7. joints of optical fibre housing according to claim 6 is characterized in that: the front end face of described procapsid is provided with pilot hole and/or guide finger.

8. according to claim 6 or 7 described joints of optical fibre housings, it is characterized in that: the pilot hole or the register pin that are respectively equipped with corresponding matching on the connection mating surface of described forward and backward housing.

9. joints of optical fibre housing according to claim 8 is characterized in that: described procapsid is in the same place by removable being solidly connected of screw with back casing.

10. joints of optical fibre housing according to claim 9 is characterized in that: described MT contact pin position limiting structure is the step position limiting structure, and this step position limiting structure is excessively to be formed from large to small at the hole of joint profile by the passage in the housing of front and back.

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