TWI468756B - Optical fiber coupling connector - Google Patents

Description

Fiber coupled connector

The present invention relates to a fiber optic coupling connector, and more particularly to a mating fiber optic coupling connector.

Optical fiber transmission has the advantages of high frequency bandwidth, low loss, strong anti-interference ability, high fidelity and reliable performance. With the continuous decline of fiber cost, optical fiber has been widely used in the field of communication.

Fiber-coupled connectors play an important role in fiber-optic transmission. The quality of fiber-coupled connectors affects the efficiency of fiber-optic transmission. Please refer to FIG. 5, which is a prior art solution of a fiber-coupled connector. The fiber optic coupling connector 10 is an integrally formed unitary structure having a blind bore 14 that houses an optical fiber 12 that leads to an optical lens 16 at one end of the fiber optic coupling connector 10. Since the blind hole 14 is an elongated hole, the ratio of the radial dimension to the axial dimension is small. Therefore, the fiber-coupled connector 10 is liable to cause the following problems: First, when molding, the molding die corresponding to the blind hole 14 is inserted. The child is relatively slender, and it is not easy to pull out the mold during demolding, and may even cause the mold in the mold to be damaged or broken during the drawing process to block the blind hole 14, thereby affecting the molding efficiency and the product yield; second, when assembling, The optical fiber 12 is not easily inserted into the blind hole 14, which affects assembly efficiency. Thirdly, it is difficult to adjust the distance between the optical fiber 12 and the optical lens 16, so that it is difficult to obtain a preferred position of the optical fiber 12 at the focus of the optical lens 16.

In view of the above, it is necessary to provide a fiber-coupled connector which is simple in construction and can effectively improve the problems of the prior art fiber-optic coupling connector.

A fiber optic coupling connector for coupling a connecting fiber includes a body and a cover that are removably mated. The main body has an optical coupling portion and a carrying portion, and the optical coupling portion has a light incident surface and a light emitting surface; the bearing portion cooperates with the cover body to form at least one optical fiber receiving space, and the at least one optical fiber receiving space has a first The first end of the optical fiber is inserted into the first port of the at least one fiber receiving space and protrudes from the second port to directly abut the light incident surface of the optical coupling portion. The carrying portion is provided with a first guiding groove facing one side of the cover. The cover body is provided with a second guiding groove corresponding to the first guiding groove on one side of the carrying portion. The first guiding slot cooperates with the second guiding slot to form the fiber receiving space. The first guiding groove and the second guiding groove are both arc-shaped. The central angle of the circular arc of the first guiding groove is greater than 180 degrees, and the central angle of the circular arc of the second guiding groove is less than 180 degrees.

Compared with the prior art solution, the fiber-coupled connector of the present invention has the following advantages: First, the fiber-coupled connector of the present invention has a fitting structure, and is manufactured by molding, and the mold-injection can be avoided during demolding. Damage or breakage in the process to block blind holes, improve molding efficiency and product yield; Second, the fiber-coupled connector of the chimeric structure is easy to assemble, which can improve assembly efficiency; Third, when assembling the fiber-coupled connector, The distance between the fiber and the optical lens is conveniently adjusted so that the preferred position of the port of the fiber at the focus of the optical lens can be more easily obtained.

10, 20, 40‧‧‧ Fiber Coupled Connectors

14‧‧‧Blind hole

22, 42‧‧‧ ontology

24, 44‧‧‧ cover

12, 26, 46‧‧‧ fiber

220, 420‧‧‧Optical coupling

16,221,421‧‧‧ optical lenses

223, 423‧‧‧ into the glossy surface

224, 424‧‧‧ glazing

230, 430‧‧ ‧ Carrying Department

231, 431‧‧‧ first guiding slot

235‧‧ ‧ pinhole

241, 441‧‧‧ second guiding slot

245‧‧ sales

435‧‧‧ hook groove

445‧‧‧ hook

2500‧‧‧Fibre accommodating space

2501, 4501‧‧‧ first port

2502, 4502‧‧‧ second port

1 is a perspective exploded view of a fiber-optic coupling connector according to a first embodiment of the present invention.

Figure 2 is a cross-sectional view of the fiber-coupled connector of Figure 1 taken along the line II-II.

Figure 3 is a left side elevational view of the fiber optic coupling connector of Figure 1.

4 is a perspective view of a fiber-optic coupling connector according to a second embodiment of the present invention.

FIG. 5 is a perspective exploded view of a fiber optic coupling connector of the prior art.

The invention will be further described in detail below with reference to the accompanying drawings.

Referring to Figures 1 and 2 together, a first embodiment of the present invention provides a fiber optic coupling connector 20 for coupling optical fibers 26 that includes a body 22 and a cover 24 that are phase-separated and removably mated.

The body 22 has an optical coupling portion 220 and a carrier portion 230. The optical coupling portion 220 has a light incident surface 223 and a light exit surface 224 . The carrying portion 230 is provided with a first guiding groove 231. The cover body 24 is provided with a second guide groove 241 corresponding to the first guide groove 231. The first guiding groove 231 and the second guiding groove 241 are both arc-shaped. The central angle of the circular arc of the first guiding groove 231 is greater than 180 degrees, and the central angle of the circular arc of the second guiding groove 241 is less than 180 degrees.

Preferably, the light-emitting surface 224 is provided with an optical lens 221, and the material of the optical lens 221 is the same as that of the optical coupling portion 220. The first guiding groove 231 extends toward the optical lens 221.

The cover body 24 is engaged with the carrying portion 230 such that the corresponding first guiding groove 231 and the second guiding groove 241 form a fiber receiving space 2500 (see FIG. 3).

The fiber receiving space 2500 has a first port 2501 and a second port 2502. The optical lens 221 is opposite to the second port 2502 of the fiber receiving space 2500. The insertion end of the optical fiber 26 is inserted by the first port 2501 of the fiber receiving space 2500 and is The second port 2502 extends directly to abut the light incident surface 223 of the optical coupling portion 220.

Since the first guiding groove 231 extends toward the optical lens 221 and the second guiding groove 241 corresponds to the first guiding groove 231, the fiber receiving space 2500 extends toward the optical lens 221. The insertion end of the optical fiber 26 inserted into the fiber receiving space 2500 faces the optical lens 221.

The optical lens 221 is used to output or input an optical signal transmitted by the optical fiber 26. The optical lens 221 can collimate or concentrate the optical signals transmitted by the optical fiber 26. When the fiber-coupled connector 20 is used as an output, the optical lens 221 collimates the optical signal transmitted by the optical fiber 26; and when the optical fiber-coupled connector 20 serves as an input, the optical lens 221 collects the optical fiber 26 The transmitted optical signal.

In this embodiment, the number of the first guiding grooves 231 is the same as the number of the second guiding grooves 241 and the number of the optical lenses 221. There are two first guiding grooves 231, two second guiding grooves 241, two optical lenses 221, and two fiber receiving spaces 2500 formed by the first guiding grooves 231 and the second guiding grooves 241. .

In this embodiment, the optical lens 221 is disposed on the light-emitting surface 224 of the optical coupling portion 220. Of course, it can be understood that the optical lens 221 itself can serve as an optical coupling portion. At this time, the light incident surface of the optical coupling portion is the light incident surface of the optical lens 221, and the light emitting surface of the optical coupling portion is the light emitting surface of the optical lens 221, and the insertion end of the optical fiber 26 directly abuts the light incident surface of the optical lens 221. .

The bearing portion 230 is provided with a pin hole 235 facing one side of the cover body 24, and the cover body 24 is provided with a pin 245 facing one side of the carrying portion 230. The pin holes 235 are in one-to-one correspondence with the pins 245 and cooperate with each other.

In this embodiment, the pin holes 235 are six, and the two are respectively arranged in the first guiding slot. 231 sides. The pins 245 are six, and the two are respectively disposed on two sides of the second guiding groove 241.

In this embodiment, the bearing portion 230 is provided with a pin hole 235, and the cover body 24 is provided with a pin 245. Of course, a pin may be disposed on the body 22, and correspondingly, a pin hole is provided in the cover body 24.

In the embodiment, the first guiding groove 231 and the second guiding groove 241 are respectively disposed on the carrying portion 230 of the main body 22 and the lid body 24. Of course, it is also possible to provide a guiding groove only on the carrying portion 230 of the main body 22. At this time, after the cover body 24 is engaged with the carrying portion 230, the guiding groove on the carrying portion 230 and the mating surface of the cover body 24 corresponding to the guiding groove are The fiber receiving space 2500 is formed. Or only the guide groove is provided on the cover body 24. At this time, after the cover body 24 is engaged with the bearing portion 230, the guiding groove on the cover body 24 and the mating surface of the bearing portion 230 corresponding to the guiding groove form the fiber receiving space. 2500.

Referring to FIG. 3 , the pin 245 cooperates with the pin hole 235 to match the cover body 24 with the bearing portion 230 of the body 22 , and the bearing portion 230 of the body 22 and the mating surface of the cover body 24 are in close contact with each other. The second guide groove 241 and the first guide groove 231 constitute an optical fiber accommodating space 2500 that accommodates the insertion end of the optical fiber 26, and the insertion end of the optical fiber 26 faces the optical lens 221.

Referring to FIG. 4, a second embodiment of the present invention provides a fiber-optic coupling connector 40 that differs from the fiber-optic coupling connector 20 of the first embodiment of the present invention in that the body 42 and the cover of the fiber-optic coupling connector 40 are fitted to each other. The body 44 is fitted in a different manner. In this embodiment, the body 42 is respectively provided with two hook grooves 425 on opposite sides of the bearing portion 430. Correspondingly, the cover body 44 is respectively provided with two hooks 445 on opposite sides thereof. The bearing portion 430 of the body 42 and the cover 44 are engaged by the fitting of the hook groove 425 and the hook 445. Others, such as the first guiding groove 431, the second guiding groove 441, and the optical coupling portion 420 The optical lens 421 and the optical fiber 46 are the same.

It can be understood that, in addition to the pin hole fitting and the hook groove fitting described in the first embodiment and the second embodiment, the cooperation of the body and the cover body can also be achieved by providing the shaft hole.

Referring again to FIG. 1, when the fiber-coupled connector 20 is assembled, the insertion end of the optical fiber 26 is placed along the first guiding groove 231, and then the pin 245 of the cover 24 is aligned with the pin hole 235 on the carrying portion 230 of the body 22. And pressing the cover body 24, inserting the pin 245 into the pin hole 235, so that the cover body 24 is engaged with the body 22 to form the fiber coupling connector 20. The distance between the optical fiber 26 and the optical lens 221 can be adjusted before the mating surface of the cover 24 and the body 22 is closely attached and pressed to the optical fiber 26.

Compared with the prior art solution, the fiber-coupled connector of the present invention has the following advantages: First, the fiber-coupled connector of the present invention has a fitting structure, and is manufactured by molding, and the mold-injection can be avoided during demolding. Damage or breakage in the process to block blind holes, improve molding efficiency and product yield; Second, the fiber-coupled connector of the chimeric structure is easy to assemble, which can improve assembly efficiency; Third, when assembling the fiber-coupled connector, The distance between the fiber and the optical lens is conveniently adjusted so that the preferred position of the port of the fiber at the focus of the optical lens can be more easily obtained.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

20‧‧‧Fiber coupled connectors

22‧‧‧Ontology

24‧‧‧ cover

26‧‧‧ fiber optic

220‧‧‧Optical coupling

221‧‧‧ optical lens

223‧‧‧Into the glossy surface

224‧‧‧Glossy

230‧‧‧ Carrying Department

231‧‧‧First guiding slot

235‧‧ ‧ pinhole

241‧‧‧Second guiding slot

245‧‧ sales

2501‧‧‧ first port

2502‧‧‧second port

Claims (9)

A fiber-coupled connector for coupling a fiber, wherein the fiber-coupled connector includes a detachably mated body and a cover; the body has an optical coupling portion and a carrier portion, the optical coupling portion having light entering The carrying portion and the cover body cooperate to form at least one fiber receiving space, the at least one fiber receiving space has a first port and a second port, and the insertion end of the optical fiber is occupied by the at least one fiber receiving space The first port is inserted and protruded from the second port to directly abut the light incident surface of the optical coupling portion, and the bearing portion is provided with a first guiding groove toward one side of the cover body, and the cover body faces the One side of the carrying portion is provided with a second guiding groove corresponding to the first guiding groove, and the first guiding groove and the second guiding groove cooperate to form the fiber receiving space, the first guiding slot and the first guiding slot The two guiding grooves are all arc-shaped, the central angle of the circular arc of the first guiding groove is greater than 180 degrees, and the central angle of the circular arc of the second guiding groove is less than 180 degrees. The optical fiber coupling connector according to claim 1, wherein an optical lens is disposed on a light-emitting surface of the optical coupling portion, and the optical lens is opposite to a second port of the optical fiber receiving space. The fiber-coupled connector of claim 1, wherein the optical coupling portion is an optical lens. The fiber-optic coupling connector of claim 1, wherein the bearing portion is provided with a pin hole or a hook groove toward one side of the cover body, and the cover body is disposed facing one side of the bearing portion. The pin or the hook corresponding to the pin hole or the hook groove. The fiber-optic coupling connector of claim 1, wherein the bearing portion is provided with a pin or a hook toward one side of the cover, and the cover is disposed facing one side of the bearing portion respectively The pin or the hook corresponding to the pin hole or the hook groove. The fiber-coupled connector of claim 4, wherein the pin hole or the hook groove cooperates with the pin or the hook in a one-to-one correspondence, and the bearing portion and the cover are The mating surface of the body fits snugly. The fiber-optic coupling connector of claim 2, wherein the bearing portion is provided with a guiding groove, and the guiding groove extends toward the optical lens, and after the bearing portion is engaged with the cover body, The guiding groove forms the fiber receiving space. The fiber-coupled connector of claim 2, wherein the cover body is provided with a guiding groove, and the guiding groove extends toward the optical lens, and the cover body cooperates with the body of the carrying portion, The guiding groove forms the fiber receiving space. The fiber-coupled connector of claim 2, wherein the material of the optical lens is the same as the material of the optical coupling portion.