SC type MPO multi-core optical fiber connector

Abstract

The utility model discloses an SC type MPO multi-core optical fiber connector, which comprises a shell, an inner core, an SC type multi-core MT insertion core, a positioning seat, a spring and a metal main body, an optical fiber sequentially penetrates through the metal main body, the positioning seat and the SC type multi-core MT insertion core, the inner core is sleeved on the peripheries of the SC type multi-core MT insertion core and the positioning seat, the front end of the SC type multi-core MT insertion core protrudes out of the front end surface of the inner core, and the spring is arranged on the outer surface of the inner core. The front end of the metal body is fixed in the rear end of the inner core, the spring is sleeved on the optical fiber, and two ends of the spring abut against the positioning seat and the metal body. The SC type single-core optical fiber connector has the same size as the existing SC type single-core optical fiber connector and is compatible with an SC adapter, so that the size of the SC type single-core optical fiber connector is greatly reduced, a simple and rapid solution is provided for directly upgrading the single-core optical fiber connector into a multi-core optical fiber connector, more space is saved in the application of a data center and an optical path device in a high-density environment, and the application range is wide. The space utilization rate is improved, and therefore a large amount of cost is saved.

Description

Technical Field

[0001] The utility model relates to an optical fiber connector, in particular to an SC-type MPO multi-core optical fiber connector of a multi-core round cable of 2.0mm-3.0mm. Background Art

[0002] In the prior art, optical fiber is a carrier for transmitting optical signals. When in use, it is often necessary to divide the signals transmitted by multiple optical fibers into several separate optical fiber transmission signals. The MPO optical fiber connector is a multi-core, multi-channel plug-in connector, which is mainly used in data centers in high-density environments. The smaller the size and the shorter the length of the MPO optical fiber connector, the more space-saving and practical it is in application. The conventional multi-core round cable 2.0-3.0mm MPO optical fiber connector is about 12.5mm wide and about 8mm thick. The matching MPO adapter is also relatively large in size, which has certain limitations.

[0003] The market needs an SC-type MPO multi-core optical fiber connector that is small in size and compatible with an SC adapter. Utility Model Content

[0004] In order to solve the above problems, the utility model discloses an SC-type MPO multi-core optical fiber connector.

[0005] The technical solution adopted by the utility model to achieve the above-mentioned purpose is:

[0006] An SC-type MPO multi-core optical fiber connector comprises an outer shell, an inner core, an SC-type multi-core MT ferrule, a positioning seat, a spring and a metal body. Optical fibers are sequentially passed through the metal body, the positioning seat and the SC-type multi-core MT ferrule. The inner core is sleeved on the outer periphery of the SC-type multi-core MT ferrule and the positioning seat. The front end of the SC-type multi-core MT ferrule protrudes from the front end surface of the inner core. The front end of the metal body is fixed in the rear end of the inner core. The spring is sleeved on the optical fiber and its two ends are against the positioning seat and the metal body.

[0007] As a further improvement of the above SC-type MPO multi-core optical fiber connector, it also includes a guide pin, the positioning seat is provided with a first guide hole, the guide pin is inserted into the first guide hole, and the guide pin protrudes from the front end surface of the SC-type multi-core MT ferrule.

[0008] As a further improvement of the above-mentioned SC-type MPO multi-core optical fiber connector, the rear end of the SC-type multi-core MT ferrule is a cylinder, and the top and bottom of the front end are respectively set as planes;

[0009] The thickness between the top and the bottom of the front end of the SC-type multi-core MT ferrule is 1.5 to 2.5 mm, and the length of the SC-type multi-core MT ferrule is 4 mm.

[0010] As a further improvement of the above-mentioned SC-type MPO multi-core optical fiber connector, a second guide hole for inserting the guide pin is provided through the SC-type multi-core MT ferrule;

[0011] Optical fiber holes for inserting the core wires of the optical fibers are provided through the SC-type multi-core MT ferrule, and the optical fiber holes are arranged in two rows.

[0012] As a further improvement of the above-mentioned SC-type MPO multi-core optical fiber connector, the front end and the rear end of the positioning seat are cylinders with different diameters, and the diameter of the rear end of the positioning seat is larger than that of the front end;

[0013] A groove for inserting the core wire of the optical fiber is provided through the positioning seat.

[0014] As a further improvement of the above-mentioned SC-type MPO multi-core optical fiber connector, a protrusion for resisting against the spring is provided inside the front end of the metal body, one end of the spring resists against the rear end of the positioning seat, and the other end resists against the protrusion.

[0015] As a further improvement of the above SC-type MPO multi-core optical fiber connector, the rear end of the metal body is fixedly connected to the outer skin of the optical fiber through a riveting ring and a clamping ring.

[0016] As a further improvement of the above-mentioned SC-type MPO multi-core optical fiber connector, it also includes a tail sleeve, which covers the riveting ring, the clamping ring, and the rear end of the metal body.

[0017] As a further improvement of the above-mentioned SC-type MPO multi-core optical fiber connector, the number of cores of the optical fiber is 4 to 12 cores.

[0018] As a further improvement of the above SC-type MPO multi-core optical fiber connector, the number of optical fiber holes is 4 to 12.

[0019] The beneficial effects of the utility model are as follows: the structural design of the utility model is reasonable and ingenious, and it has the same volume as the existing SC-type single-core fiber optic connector and is compatible with SC adapters, which greatly reduces its volume, and provides a simple and quick solution for directly upgrading the single-core fiber optic connector to a multi-core fiber optic connector, which saves more space in data centers and optical path device applications in high-density environments, improves space utilization, and thus saves a lot of costs.

[0020] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of the utility model;

[0022] Figure 2 It is an exploded view of the utility model;

[0023] Figure 3 It is a three-dimensional diagram of the utility model when the outer shell is removed;

[0024] Figure 4 It is a structural schematic diagram of the positioning seat in the utility model;

[0025] Figure 5 It is a structural schematic diagram of the SC-type multi-core MT ferrule in the utility model;

[0026] Figure 6 It is a structural schematic diagram of the SC-type multi-core MT ferrule in the utility model from another angle. DETAILED DESCRIPTION

[0027] For example, see Figures 1 to 5 The present embodiment provides an SC-type MPO multi-core optical fiber connector, which includes an outer shell 1, an inner core 2, an SC-type multi-core MT ferrule 3, a positioning seat 4, a spring 5 and a metal body 6. An optical fiber 7 is sequentially penetrated through the metal body 6, the positioning seat 4 and the SC-type multi-core MT ferrule 3. The inner core 2 is sleeved on the outer periphery of the SC-type multi-core MT ferrule 3 and the positioning seat 4. The front end of the SC-type multi-core MT ferrule 3 protrudes from the front end surface of the inner core 2. The front end of the metal body 6 is fixed in the rear end of the inner core 2. The spring 5 is sleeved on the optical fiber 7 and its two ends are against the positioning seat 4 and the metal body 6.

[0028] As a further improvement of the above-mentioned SC-type MPO multi-core optical fiber 7 connector, it also includes a guide pin 8. The positioning seat 4 is provided with a first guide hole 41, and the guide pin 8 is inserted into the first guide hole 41. The guide pin 8 protrudes from the front end surface of the SC-type multi-core MT ferrule 3.

[0029] As a further improvement of the above-mentioned SC-type MPO multi-core optical fiber 7 connector, the rear end of the SC-type multi-core MT ferrule 3 is a cylinder, and the top and bottom of the front end are respectively set as planes 33 and 34;

[0030] The thickness between the top and the bottom of the front end of the SC-type multi-core MT ferrule 3 is 1.5 to 2.5 mm, and the length of the SC-type multi-core MT ferrule 3 is 4 mm.

[0031] As a further improvement of the above-mentioned SC-type MPO multi-core optical fiber 7 connector, a second guide hole for inserting the guide pin 8 is provided through the SC-type multi-core MT ferrule 3;

[0032] Optical fiber holes 31 for inserting the core wires of the optical fibers 7 are provided through the SC-type multi-core MT ferrule 3 , and the optical fiber holes 31 are arranged in two rows.

[0033] In this embodiment, the rear end surface of the SC-type multi-core MT ferrule 3 is configured as a groove 35 corresponding to the optical fiber hole 31 .

[0034] As a further improvement of the above-mentioned SC-type MPO multi-core optical fiber 7 connector, the front end and the rear end of the positioning seat 4 are cylinders with different diameters, and the rear end diameter of the positioning seat 4 is larger than the front end;

[0035] A groove 42 for inserting the core wire of the optical fiber 7 is provided through the positioning seat 4 .

[0036] In this embodiment, the first guide hole 41 is located in the cylinder at the front end of the positioning seat 4. The first guide hole 41 and the outer wall surface of the cylinder at the front end of the positioning seat 4 are set as openings. The rear end of the opening and the rear end of the first guide hole 41 form a chamber for accommodating the rear end of the guide needle 8. The front end of the opening is provided with an arc-shaped opening 43. The inner width of the arc-shaped opening 43 is greater than or equal to the middle width, and the middle width of the arc-shaped opening 43 is smaller than the outer width. Since the positioning seat 4 is made of plastic material and has a certain elastic deformation performance, the rear end of the guide needle 8 can be pushed into the first guide hole 41 from the arc-shaped opening 43 and stuck in the first guide hole 41. In this embodiment, a recess 81 is also provided at the rear end of the guide needle 8 corresponding to the arc-shaped opening 43, so as to have a smaller passing diameter, which is convenient for pushing the guide needle 8.

[0037] As a further improvement of the above-mentioned SC-type MPO multi-core optical fiber 7 connector, a protrusion for abutting against the spring 5 is provided inside the front end of the metal body 6, one end of the spring 5 abuts against the rear end of the positioning seat 4, and the other end abuts against the protrusion.

[0038] As a further improvement of the above-mentioned SC-type MPO multi-core optical fiber 7 connector, the rear end of the metal body 6 is fixedly connected to the outer skin of the optical fiber 7 through a riveting ring 91 and a clamping ring 92.

[0039] As a further improvement of the above-mentioned SC-type MPO multi-core optical fiber 7 connector, it also includes a tail sleeve 93, which covers the riveting ring 91, the clamping ring 92, and the rear end of the metal body.

[0040] As a further improvement of the above-mentioned SC-type MPO multi-core optical fiber 7 connector, the number of cores of the optical fiber 7 is 4 to 12 cores.

[0041] As a further improvement of the above-mentioned SC-type MPO multi-core optical fiber 7 connector, the number of the optical fiber holes 31 is 4 to 12.

[0042] The outer shell 1 and the inner core 2 are combined into a whole, and the outer shell 1 and the inner core 2 can move forward and backward to a limited extent. The width of the outer shell 1 is about 9 mm and the thickness is about 8 mm. The bare fiber of the multi-core optical fiber 7 is inserted into the optical fiber hole 31 of the SC-type multi-core MT ferrule 3 from the rear end of the SC-type multi-core MT ferrule 3, and then the SC-type multi-core MT ferrule 3 is installed on the inner core 2. A boss is formed between the top and bottom planes of the front end of the SC-type multi-core MT ferrule 3 and the rear end. The boss of the SC-type multi-core MT ferrule 3 is close to the inner wall step of the inner core 2 to limit the protruding length of the SC-type multi-core MT ferrule 3, and the protruding length is less than or equal to 1 mm.

[0043] The two guide pins 8 on the positioning seat 4 are inserted into the second guide holes 32 of the SC-type multi-core MT ferrule 3, close to the rear end of the SC-type multi-core MT ferrule 3;

[0044] The optical fiber 7 is passed through the spring 5, and one end of the spring 5 is closely attached to the groove 42 of the positioning seat 4, so as to limit the spring 5 and prevent the spring 5 from deflecting;

[0045] The optical fiber 7 is passed through the metal body, one end of the metal body is close to the spring 5 and inserted into the inner core 2, and the spring 5 is compressed until the metal body and the inner core 2 are fixed by buckles on both sides of the inner core 2. Other methods can also be used for fixing, which are not listed in this embodiment;

[0046] The outer sheath of the optical cable is tightly connected to the metal body by means of a riveting ring 91 and a clamping ring 92;

[0047] The tail sleeve 93 is pushed onto the metal body to completely cover the rivet ring 91 and the tie ring 92 , thereby protecting the joints between the optical cable and the rivet ring 91 and the tie ring 92 .

[0048] The utility model has a reasonable and ingenious structural design. It has the same volume as the existing SC-type single-core fiber optic connector and is compatible with SC adapters, which greatly reduces its volume. It also provides a simple and quick solution for directly upgrading single-core fiber optic connectors to multi-core fiber optic connectors. It saves more space in data centers and optical path device applications in high-density environments, improves space utilization, and thus saves a lot of costs.

[0049] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Any technician familiar with the field can make many possible changes and modifications to the technical solution of the utility model by using the technical means and technical contents disclosed above without departing from the scope of the technical solution of the utility model, or modify it into an equivalent embodiment of equivalent changes. Therefore, all equivalent changes made according to the shape, structure and principle of the utility model without departing from the content of the technical solution of the utility model should be included in the protection scope of the utility model.

Claims

1. An SC-type MPO multi-core optical fiber connector, characterized in that: It includes an outer shell, an inner core, an SC-type multi-core MT ferrule, a positioning seat, a spring and a metal body. Optical fibers are sequentially penetrated through the metal body, the positioning seat and the SC-type multi-core MT ferrule. The inner core is sleeved on the outer periphery of the SC-type multi-core MT ferrule and the positioning seat. The front end of the SC-type multi-core MT ferrule protrudes from the front end surface of the inner core. The front end of the metal body is fixed in the rear end of the inner core. The spring is sleeved on the optical fiber and its two ends are against the positioning seat and the metal body.

2. The SC-type MPO multi-core optical fiber connector according to claim 1, characterized in that: It also includes a guide pin. The positioning seat is provided with a first guide hole. The guide pin is inserted into the first guide hole. The guide pin protrudes from the front end surface of the SC-type multi-core MT ferrule.

3. The SC-type MPO multi-core optical fiber connector according to claim 2, characterized in that: The rear end of the SC-type multi-core MT ferrule is a cylinder, and the top and bottom of the front end are respectively set as planes; The thickness between the top and the bottom of the front end of the SC-type multi-core MT ferrule is 1.5 to 2.5 mm, and the length of the SC-type multi-core MT ferrule is 4 mm.

4. The SC-type MPO multi-core optical fiber connector according to claim 3, characterized in that: A second guide hole for inserting the guide pin is provided through the SC-type multi-core MT ferrule; Optical fiber holes for inserting the core wires of the optical fibers are provided through the SC-type multi-core MT ferrule, and the optical fiber holes are arranged in two rows.

5. The SC-type MPO multi-core optical fiber connector according to claim 3, characterized in that: The front end and the rear end of the positioning seat are cylinders with different diameters, and the diameter of the rear end of the positioning seat is larger than that of the front end; A groove for inserting the core wire of the optical fiber is provided through the positioning seat.

6. The SC-type MPO multi-core optical fiber connector according to claim 4 or 5, characterized in that: A protrusion for resisting against the spring is arranged inside the front end of the metal body, one end of the spring resists against the rear end of the positioning seat, and the other end resists against the protrusion.

7. The SC-type MPO multi-core optical fiber connector according to claim 6, characterized in that: The rear end of the metal body is fixedly connected to the outer skin of the optical fiber through a riveting ring and a binding ring.

8. The SC-type MPO multi-core optical fiber connector according to claim 7, characterized in that: It also includes a tail sleeve, which covers the riveting ring, the clamping ring, and the rear end of the metal body.

9. The SC-type MPO multi-core optical fiber connector according to claim 1, characterized in that: The optical fiber has 4 to 12 cores.

10. The SC-type MPO multi-core optical fiber connector according to claim 4, characterized in that: The number of the optical fiber holes is 4 to 12.

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