CN219302720U

CN219302720U - MT optical fiber connector applicable to on-board

Info

Publication number: CN219302720U
Application number: CN202320531769.0U
Authority: CN
Inventors: 金建峰; 刘光兵
Original assignee: Oece Communication Co ltd
Current assignee: Oece Communication Co ltd
Priority date: 2023-03-02
Filing date: 2023-03-02
Publication date: 2023-07-04
Anticipated expiration: 2033-03-02

Abstract

The utility model relates to the field of optical fiber communication, in particular to an MT optical fiber connector applicable to on-board, which comprises a connector male head, a connector female head and a base, wherein the connector male head comprises an MT short-inserting core for fixing optical fibers; the connector female head comprises an MT long inserting core used for fixing optical fibers, a first shell, a movable thrust ring and a second shell, wherein the first shell is provided with a cavity for accommodating the MT long inserting core, the front end of the first shell is provided with a frame structure, a through hole in the middle of the frame structure is communicated with the cavity of the first shell, the connector male head is matched with the through hole in the middle of the frame structure and then connected with the MT long inserting core, a spring and the movable thrust ring are sleeved outside the first shell, and one end of the spring is connected with the frame structure at the front end of the first shell. Compared with the prior art, the utility model has the advantages that: the structure is simple, and the operation of on-board connection is suitable; limiting the rotation of the optical fiber, so that a polarization maintaining optical fiber can be used; ultra-small size, with short MT ferrules.

Description

MT optical fiber connector applicable to on-board

Technical Field

The utility model relates to the field of optical fiber communication, in particular to an MT optical fiber connector applicable to on-board.

Background

With the gradual evolution of optical fiber communication to highly integrated CO-packaged optics, new requirements are put forward for optical fiber connection points, and the optical fiber connector is required to be smaller in structure and simpler and more effective in structure. The MT connector commonly used at present is based on the external connection scene of equipment, and is relatively large in size, relatively complex in mechanism and not suitable for on-board application scenes.

The Chinese patent publication No. CN10433085B discloses an optical fiber connector and an optical fiber connector assembly using the same, comprising a shell, MT contact pieces, guide pin holes, guide pins and positioning posts/holes. The device is to preliminarily align first, realizes the cooperation of the positioning column and the positioning hole, then realizes the preliminary alignment of the plug MT contact and the socket MT contact after the positioning and the insertion of the guide pin and the guide pin hole, and can only dock the optical fibers after each stage of positioning is accurate. These auxiliary positioning components result in an excessively complex overall structure of the connector and an excessively large connector volume.

Disclosure of Invention

The technical problem to be solved by the utility model is to overcome the defects of the prior art, and provide the MT optical fiber connector which has small volume and simple structure, and can be suitable for on-board and meet the requirements of polarization maintaining optical fiber connection.

In order to achieve the above object, an MT fiber connector applicable to on-board is designed, comprising a male connector, a female connector and a base, wherein the male connector comprises an MT short ferrule for fixing an optical fiber; the connector female comprises an MT long inserting core for fixing optical fibers, a first shell, a movable thrust ring and a second shell, wherein the first shell is provided with a cavity for accommodating the MT long inserting core, the front end of the first shell is provided with a frame structure, a through hole in the middle of the frame structure is communicated with the cavity of the first shell, the connector male is matched with the through hole in the middle of the frame structure and then connected with the MT long inserting core, a spring and the movable thrust ring are sleeved on the outer side of the first shell, one end of the spring is connected with the frame structure at the front end of the first shell, the other end of the spring is connected with the movable thrust ring, the second shell is connected with the tail end of the first shell, and step structures are further arranged on two sides of the second shell; the base is close to the public first one end of connector and sets up flutedly, the base is close to the female first one end of connector and is the open end, and the both sides of base open end are equipped with step structure, the bottom of base open end still is equipped with the extension.

The utility model also has the following preferable technical scheme:

1. and the MT long inserting core is provided with a positioning guide pin.

2. The first shell and the second shell are used for protecting the MT long ferrule and the MT short ferrule.

3. The susceptor may be integrated on a substrate.

4. After the male connector is matched with the through hole in the middle of the frame structure of the first shell, the frame structure is arranged on the inner side of the groove of the base, and the front end of the frame structure is propped against the inner side of the groove of the base.

5. The first shell with the spring and the movable thrust ring sleeved outside is arranged on the inner side of the opening end of the base, the rear end of the movable thrust ring abuts against the inner side of the step structure on two sides of the opening end of the base, the movable thrust ring moves on the first shell, the step structure on two sides of the opening end of the base limits the farthest moving distance of the movable thrust ring, and the movable thrust ring presses the spring, so that contact force is generated when the MT ferrule is in butt joint.

6. The second shell is provided with a cavity, the tail end of the second shell is longitudinally provided with a protruding portion, and the protruding portion is used for limiting the longitudinal movement freedom degree of the MT long ferrule.

7. The second shell is arranged on the extending section of the bottom of the opening end of the base, and the front ends of the step structures at two sides of the second shell are propped against the outer sides of the step structures at two sides of the opening end of the base.

8. The male connector and the female connector are vertically arranged on the base.

Compared with the prior art, the utility model has the advantages that:

1. the structure is simple, the assembly process is simplified, and the device is suitable for the operation of on-board connection;

2. the male connector and the female connector are connected and then clamped on the base, and limit is carried out on the rotation of the optical fiber, so that the polarization maintaining optical fiber can be used;

3. the microminiature size is matched with a short MT ferrule, and the MT connection size can be 8.1 x 15.2 x 11.7mm, (the traditional MPO connection size is 120 x 14.8 x 9.3 mm).

Drawings

FIG. 1 is a schematic view of the assembly of the present utility model;

FIG. 2 is an assembled schematic perspective view of the present utility model;

FIG. 3 is a schematic cross-sectional view of the assembled utility model;

FIG. 4 is a schematic view of the spring preload state of the present utility model;

FIG. 5 is a schematic view of the spring of the present utility model in operation;

in the figure: 1. a connector male; MT short ferrule; 3. a connector female; MT long ferrule; 5. positioning a guide pin; 6. a first housing; 7. a spring; 8. a movable thrust collar; 9. a base; 10. and a second housing.

Detailed Description

The construction and principles of the present utility model will be readily apparent to those skilled in the art from the following description taken in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

As shown in fig. 1 to 3, the present utility model is mainly composed of a connector male 1, a connector female 3, and a base 9. The connector male head 1 is provided with an MT short inserting core 2, and the connector female head 3 is provided with an MT long inserting core 4, a first shell 6, a movable thrust ring 8 and a second shell 10. The MT long inserting core 4 is provided with a positioning guide pin 5, and the MT short inserting core 2 is matched with the MT long inserting core 4 through the positioning guide pin 5.

The first shell 6 is provided with a cavity, the MT long ferrule 4 is inserted into the first shell 6 through the cavity of the first shell 6, the front end of the first shell 6 is provided with a frame structure, and a through hole in the middle of the frame structure is communicated with the cavity of the first shell 6. The outside of the first shell 6 is sleeved with a spring 7, and one end of the spring 7 is abutted against the frame structure at the front end of the first shell and is connected with the frame structure. The movable thrust ring 8 is sleeved outside the first shell 6, the movable thrust ring 8 is positioned at the other end of the spring 7, and the movable thrust ring 8 is used for pre-pressing the spring 7, so that contact force is generated when the MT lock pin is in butt joint. The second housing 10 is provided with a cavity, and the tail end of the second housing 10 is longitudinally provided with a protruding part, and the protruding part is used for limiting the longitudinal movement freedom of the MT long ferrule 4. The second shell 10 is connected with the tail end of the first shell 6 and sleeved at the tail end of the MT long ferrule 4. The first housing 6 and the second housing 10 are used for protecting the MT long ferrule 4 and the MT short ferrule 2.

The base 9 is close to the public first 1 one end of connector and sets up flutedly, and the base 9 is close to the female first 3 one end of connector and is the open end, and the both sides of base 9 open end are equipped with step structure, and the bottom of base 9 open end still is equipped with the extension. As shown in fig. 1 and 4, after the first housing 6, the movable thrust ring 8 and the second housing 10, which are respectively sleeved with the spring 7, are sleeved on the MT long ferrule 4 from front to back, the MT short ferrule 2 is inserted into the first housing 6, so that the connector female 3 is in butt joint with the connector male 1, and the spring 7 is in a pre-pressed state.

As shown in fig. 1, 3 and 5, the pre-connected male connector 1 and the pre-connected female connector 3 are vertically clamped on the base 9, at this time, the male connector 1 is matched with the middle through hole of the frame structure of the first shell 6 and then positioned at the inner side of the groove of the base 9, and the front end of the frame structure is propped against the inner side of the groove of the base 9; the first shell 6 with the spring 7 and the movable thrust ring 8 sleeved outside is located at the inner side of the opening end of the base 9, the rear end of the movable thrust ring 8 abuts against the inner side of the step structure at the two sides of the opening end of the base 9, the movable thrust ring 9 moves on the first shell 6, the step structure at the two sides of the opening end of the base 9 limits the farthest moving distance of the movable thrust ring 8, and the movable thrust ring 8 presses the spring 7, so that contact force is generated when the MT ferrules are abutted.

The two sides of the second shell 10 are also provided with step structures, the second shell 10 is positioned on the extension section of the bottom of the opening end of the base 9, and the front ends of the step structures at the two sides of the second shell 10 are propped against the outer sides of the step structures at the two sides of the opening end of the base 9. Because the width of the base 9 is matched with the width of the first shell 6 and the width of the movable thrust ring 8, the connector male head 1 and the connector female head 3 can be clamped into the base 9 after being connected, and the connector male head is not easy to fall off. The base 9 may also be integrated on the substrate.

The above description is only specific to the embodiments of the utility model, but the scope of the utility model is not limited thereto, and any person skilled in the art who is skilled in the art to which the utility model pertains shall apply to the technical solution and the novel concept according to the utility model, and shall all be covered by the scope of the utility model.

Claims

1. An MT optical fiber connector suitable for on-board use comprises a connector male head, a connector female head and a base, and is characterized in that

The connector male comprises an MT short ferrule for fixing an optical fiber;

the connector female comprises an MT long inserting core for fixing optical fibers, a first shell, a movable thrust ring and a second shell, wherein the first shell is provided with a cavity for accommodating the MT long inserting core, the front end of the first shell is provided with a frame structure, a through hole in the middle of the frame structure is communicated with the cavity of the first shell, the connector male is matched with the through hole in the middle of the frame structure and then connected with the MT long inserting core, a spring and the movable thrust ring are sleeved on the outer side of the first shell, one end of the spring is connected with the frame structure at the front end of the first shell, the other end of the spring is connected with the movable thrust ring, the second shell is connected with the tail end of the first shell, and step structures are further arranged on two sides of the second shell;

the base is close to the public first one end of connector and sets up flutedly, the base is close to the female first one end of connector and is the open end, and the both sides of base open end are equipped with step structure, the bottom of base open end still is equipped with the extension.

2. An MT fiber optic connector according to claim 1, wherein said MT ferrule is provided with a positioning pin.

3. The MT fiber optic connector according to claim 1, wherein said first and second housings are adapted to protect MT long ferrules and MT short ferrules.

4. An MT fiber optic connector according to claim 1, wherein said base is integrated on a substrate.

5. The MT fiber optic connector according to claim 1, wherein said connector male is adapted to fit through a central opening of a frame structure of said first housing, said frame structure being disposed inside a recess of said base, and a front end of said frame structure being disposed inside said recess of said base.

6. The MT fiber optic connector according to claim 1, wherein said first housing having a spring and a movable thrust ring disposed on an outer side thereof is provided on an inner side of an open end of the base, a rear end of the movable thrust ring abuts against inner sides of stepped structures on both sides of the open end of the base, the movable thrust ring moves on the first housing, the stepped structures on both sides of the open end of the base limit a farthest moving distance of the movable thrust ring, and the movable thrust ring presses the spring, thereby generating a contact force when the MT ferrules are mated.

7. The MT fiber optic connector according to claim 1, wherein said second housing is provided with a cavity, and wherein a protrusion is provided longitudinally at a rear end of the second housing, said protrusion being adapted to limit a longitudinal freedom of movement of the MT ferrule.

8. The MT fiber optic connector according to claim 1, wherein said second housing is provided on an extension of a bottom of said open end of said base, and the front ends of said step structures on both sides of said second housing are abutted to the outside of said step structures on both sides of said open end of said base.

9. An MT fiber optic connector according to claim 1, wherein said male and female connector heads are vertically arranged on said base.