TWI461770B - Fiber optic connector - Google Patents

Description

The optical fiber connector

The present invention relates to a fiber optic connector for computer data transmission.

In today's increasingly developed information technology, data transmission is extremely important. To meet the needs of high-speed computer area network, conference TV, video on demand and other applications, information transmission media with faster rate and greater information transmission has become an important material science. Question. At present, in the information transmission process, a copper fiber using a metal as a medium, a quartz fiber using a quartz glass as a medium, and a plastic optical fiber using a polymer material as a medium can be used. As the transmission rate of optical fibers in computer networks continues to develop, and connectors made of plastic optical fibers have the advantages of convenient installation, low cost, and strong anti-interference ability, such connectors are increasingly used in various computer networks. road.

After long-term development of optical fiber connectors, the requirements for optical fiber connectors are getting higher and higher, and the miniaturization and manufacturing simplification of connectors is an important trend in the current development. The conventional fiber optic connector generally includes a mating terminal that is opposite to the mating connector, a metal casing that is mounted at the rear end of the mating terminal, and a fiber optic cable that is received in the metal casing and the mating terminal. The mating terminal includes a cylindrical needle portion and receives a housing of the receiving cavity of the mating connector and a through hole having a rear surface of the mating terminal penetrating the front surface of the needle, the optical fiber cable is received in the through hole and the front end thereof is flush with the front end surface of the needle, and the housing is composed of four The wall is surrounded. Although the shell and the metal shell are matched by the gap and the boss to achieve the foolproof effect, due to the limitation of the structure, it is not easy to install the notch and the boss at one time during installation. Alignment requires multiple attempts to work well.

Therefore, it is necessary to provide a fiber optic connector to overcome the above difficulties.

The main object of the present invention is to provide a fiber optic connector that is compact and easy to install.

In order to achieve the above object, an optical fiber connector includes a butt terminal, a metal case connected to the mating terminal, and a cable having an optical fiber and being received in the metal case and the mating terminal, wherein the docking terminal includes a body a pin portion extending forward from the main body portion, the metal case having a receiving groove connected to the main body portion, the needle portion having a central hole recessed rearward from a front surface thereof and penetrating to a rear surface of the mating terminal, The optical fiber is received in the central hole, and the mating terminal further includes a pair of abutting portions extending forward from the body portion and located at two sides of the needle portion, the metal casing having a pair of extending portions extending forward from a front surface thereof The extension portion is located on both sides of the abutting portion and the needle portion.

Compared with the prior art, the optical fiber connector combination of the present invention has the following beneficial effects: the optical fiber connector is more compact and more convenient to install.

100‧‧‧Fiber Optic Connectors

1‧‧‧Docking terminal

11‧‧‧ Body Department

111‧‧‧ first paragraph

112‧‧‧second paragraph

12‧‧‧Docking Department

121‧‧‧Bump

13‧‧‧needle

131‧‧‧ center hole

14‧‧‧Connecting Department

141‧‧‧ Groove

2‧‧‧Metal housing

20‧‧‧ Main body

21‧‧‧ housing trough

22‧‧‧Extension

221‧‧‧ rib

23‧‧‧Protection Department

231‧‧‧ receiving holes

3‧‧‧ Cable

31‧‧‧ fiber optic

32‧‧‧Insulated Endothelial

33‧‧‧Insulated outer skin

4‧‧‧ inner module

41‧‧‧through hole

The first figure is a perspective assembled view of the fiber optic connector of the present invention.

The second figure is an exploded perspective view of the fiber optic connector shown in the first figure.

The third figure is an exploded perspective view of another angle of the fiber optic connector shown in the second figure.

The fourth drawing is a cross-sectional view taken along line V-V of the first figure.

Referring to the first to fourth figures, the optical fiber connector 100 of the present invention includes a butt terminal 1 , a metal case 2 connected to the butt terminal 1 , and a cable 3 housed in the metal case 2 . The inner module 4 housed in the metal casing 2 .

The butt terminal 1 is made of a metal material, and the metal material of this embodiment is a copper alloy. The docking terminal 1 has a body portion 11 having a "convex" shape, a pair of abutting portions 12 extending forward from the body portion 11, a needle portion 13 having a cylindrical shape between the abutting portions 12, and extending rearward from the body portion 11 Cylindrical connection portion 14. The body portion 11 includes a first segment 111 at a front portion thereof and a second segment 112 at a rear portion of the first segment 111. The second segment 112 is smaller than the first segment 111, and the front end surface of the needle portion 13 exceeds the front end surface of the abutting portion 12. The connecting portion 14 has a recess 141 formed to be recessed forward from the rear end thereof, and the needle portion 13 has a center hole 131 penetrating from the front end surface thereof, and the center hole 131 penetrates the recess 141. The outer surface of the abutting portion 12 has a stud 121 extending in the butting direction.

The metal casing 2 is die-cast of a zinc alloy, and includes a main body portion 20 having a substantially rectangular parallelepiped shape, a pair of extending portions 22 extending forward from the front surface of the main body portion 20, and a receiving groove 21 recessed rearward from the front surface of the main body portion 20. a cylindrical protection portion 23 extending rearward from the rear surface of the main body portion 20 and a receiving hole 231 penetrating the rear surface of the protection portion 23 and communicating with the receiving groove 21. The end of the extension 22 has a rib 221 that is perpendicular to the mating direction.

The cable 3 includes an optical fiber 31 located at the center, an insulating endothelium 32 covering the optical fiber 31, and an insulating sheath 33 covering the insulating endothelium 32. The front end of the optical fiber 31 is exposed to the insulating endothelium 32 and the insulating sheath 33.

The inner module 4 is injection molded of plastic having a through hole 41 penetrating the front and rear surfaces.

During assembly, the optical fiber 31 of the cable 3 is mounted forward from the rear end of the mating terminal 1 through the recess 141 and the central hole 131. A length of the optical fiber 31 is exposed on the front end surface of the needle portion 12, and the exposed optical fiber 31 is received in the center hole 131. The insulating body 32 is received in the groove 141 and pressed against the groove 141. The connecting portion 14 of the docking terminal 1 is interference-fitted with the through hole 41 of the inner module 4, The rear surface of the body portion 11 of the terminal 1 is abutted against the front surface of the inner module 4, and the through hole 41 of the inner module 4 and the insulating sheath 33 are pressed against each other.

The metal housing 2 is connected to the mating terminal 1 , and the receiving groove 21 of the metal housing 2 houses the connecting portion 14 of the mating terminal 1 and the second portion 112 of the main body portion 11 . The front surface of the metal housing 2 abuts the main body portion 11 . The rear surface of the first segment 111, the receiving groove 21 of the metal casing 2 is interference-fitted with the second segment 112, the two surfaces of the metal casing 2 are flush with the outer surface of the first segment 111, and the extending portion 22 is located at the needle portion 13. On both sides, the abutting portion 12 and the extending portion 22 are respectively located on the four faces of the cylindrical rectangular parallelepiped and are spaced apart from each other. The extending portion 22 and the abutting portion 12 surround the needle portion 13, and the extending portion 22 does not extend beyond the front end surface of the abutting portion 12, and the front end surface of the needle portion 13 extends beyond the front end surface of the extending portion 22. The inner surface of the metal casing 2 abuts against the rear surface of the inner module 4. The optical fiber 31 exposed at the front end of the needle portion 13 is cut away so that the front surface of the optical fiber 31 is aligned with the front surface of the needle portion 13.

Since the extending portion 22 of the metal casing 2 is located on both sides of the needle portion 13 and the abutting portion 12, and the metal casing 2 is connected to the mating terminal 1, the relative position of the abutting portion 12 and the extending portion 22 can be referred to the main body portion. 11 is aligned with the receiving groove 21, and the main body portion 11 is inserted into the receiving groove 21 of the metal casing 2 at a time.

The embodiments described in the description of the present invention are merely illustrative of the principles of the invention and its advantages. It is to be understood that those skilled in the art can modify and change the above embodiments without departing from the spirit of the invention. The scope of the invention should be as set forth in the appended claims.

100‧‧‧Fiber Optic Connectors

1‧‧‧Docking terminal

11‧‧‧ Body Department

12‧‧‧Docking Department

13‧‧‧needle

2‧‧‧Metal housing

22‧‧‧Extension

3‧‧‧ Cable

Claims (9)

An optical fiber connector comprising: a mating terminal, comprising: a body portion; a needle portion extending forward from the body portion; and a pair of abutting portions extending forward from the body portion and located at two sides of the needle portion, the needle portion Having a central hole recessed rearwardly from a front surface thereof and penetrating to a rear surface of the mating terminal, the body portion having a first section at a front portion thereof and a second segment located behind the first segment and smaller than the first segment a metal case connected to the mating terminal, having a receiving groove connected to the body portion and a pair of extending portions extending forward from the front surface thereof, wherein the extending portion is located at the abutting portion and the needle portion a second portion of the body portion is coupled to the receiving groove by an interference fit, the front surface of the metal casing abutting the rear surface of the first segment, and the two surfaces of the first segment and the metal casing are The outer surface is flush; the cable has an optical fiber and is received in the metal casing and the mating terminal, and the optical fiber is received in the center hole. The optical fiber connector of claim 1, wherein the extension portion does not extend beyond the abutting portion. The optical fiber connector according to claim 1, wherein the abutting portion and the extending portion are respectively located on four surfaces of the cylindrical rectangular parallelepiped and are spaced apart from each other. The optical fiber connector of claim 1, wherein the outer surface of the abutting portion has a stud extending in a butting direction. The fiber optic connector of claim 1, wherein the extension end has a rib perpendicular to the mating direction. The optical fiber connector of claim 1, wherein the optical fiber connector further has a receiving The inner module is accommodated in the inner metal housing, and the mating terminal further has a connecting portion extending rearward from the main body portion, and the inner module has a through hole penetrating the front and rear surfaces thereof, and the through hole is interference-fitted with the connecting portion. The optical fiber connector of claim 6, wherein the rear surface of the inner module abuts against the inner rear surface of the metal casing. The optical fiber connector of claim 7, wherein the cable further comprises an insulating endoscope covering the optical fiber and an insulating sheath covering the insulating endoscope, and the through hole of the inner module and the insulating sheath are mutually extrusion. The optical fiber connector according to claim 1, wherein the front end surface of the optical fiber is flush with the front end surface of the needle portion.