CN205139424U - Directly bend formula fiber connector - Google Patents

Abstract

The utility model provides a fiber connector, sets up outside the casing including light contact pin, casing, tail cover, fiber cable jacket, optic fibre and optical fiber splice, the needle portion of light contact pin, light contact pin later half in the casing, and the optic fibre of light contact pin loops through casing, tail cover, fiber cable jacket to optical fiber splice, still including cushioning the cavity, the setting of buffering cavity becomes 90 component right angle structures with the tail cover between casing and tail cover, the internal portion of cushion chamber sets up limit structure, and optic fibre passes through limit structure and realizes crookedly. The utility model discloses a fiber connector has realized the function of fiber connector right -angle bending, can use under narrow and small space environment, has reduced installation space, adopts split type structural design, without die sinking casting, greatly reduced the cost.

Description

A kind of straight curved formula joints of optical fibre

Technical field

The utility model relates to fiber optic communication field, is specifically related to a kind of joints of optical fibre.

Background technology

The joints of optical fibre are more and more applied in every field as the requisite part of optical fiber communication, and the kind of joints of optical fibre product is more on the market at present, by connector shell body encapsulating material have plastics and metal point.Machinery, the environmental suitability of plastic connector are poor, can not meet military requirements, the joints of optical fibre of metal shell encapsulation can meet military particular surroundings requirement, but the joints of optical fibre of traditional metal shell encapsulation all belong to " level " structure substantially, 90 ° of bendings can not be carried out, the optical cable by tail cover is outside is still needed to bend during installation, bending radius during installation can not be greater than the bending radius of optical cable self, otherwise easily cause optical fiber to damage even to rupture, therefore need larger installing space, be not suitable for using under narrow space environment.

Utility model content

A kind of joints of optical fibre that the utility model proposes, can solve conventional fiber optic connectors can not the technical matters that can not install of bending and causing at narrow space.

For achieving the above object, the utility model have employed following technical scheme:

A kind of joints of optical fibre, comprise light contact pin, housing, tail cover, cable jacket, optical fiber and fibre-optical splice, the pin portion of light contact pin is arranged on outside housing, the lower body of light contact pin is in housing, and the optical fiber of light contact pin passes through housing, tail cover, cable jacket successively to fibre-optical splice, also comprises buffering cavity, described buffering cavity is arranged between housing and tail cover, buffering cavity and tail overlap form right angle structure in 90 °, and buffering inside cavity arranges position limiting structure, and optical fiber realizes bending by position limiting structure.

Further, the lower body of light contact pin is arranged contact pin spring, the afterbody of light contact pin arranges contact pin tail cap, the rear of contact pin tail cap arranges push pedal, described position limiting structure comprises L bar and motion bar, the inflection point place of L bar is rotationally connected by rotating shaft and buffering cavity inner wall, one end of L bar is against in push pedal, the other end is fixedly connected with one end of motion bar, described L bar is provided with groove I away from the end, one end of push pedal, one is connected for overlapping the cylinder of optical fiber by axis of rotation in groove I, described motion bar is provided with groove II away from the end, one end of L bar, one is connected for overlapping the cylinder of optical fiber by axis of rotation equally in groove II, can contact pin tail cap be promoted by contact pin spring and then promote push pedal when light contact pin moves backward, the moment that push pedal acts on L bar makes L bar rotate around the axis.

Further, also comprise spring stop, spring stop is arranged on the rear of contact pin spring, and spring stop trip bolt is fastened on enclosure interior.

Further, also comprise gib screw and push pedal spring, push pedal spring is arranged on solid screw, and gib screw is fixed on push pedal on spring stop, and push pedal spring is for push pedal return.

From such scheme, the straight curved formula joints of optical fibre of the present utility model adopt split-type structural design, independently buffer fiber cavity is adopted to carry out the shifting amount introduced when receiving optical fiber lock pin floats, when connector inserting or when being separated, spring floating structure normally works, optical fiber back and forth can only buffering cavity in play; Secondly, according to the minimum bending radius of optical fiber, design the stop means of limit fibre bending radius, like this, lock pin connect with when being separated introduce amount of floating on the impact of optical fiber by very little, because bending radius is too small and fracture or affect light loss when preventing optical fiber play, optical fiber can be made to install in narrow space, solve the history that the joints of optical fibre can not bend thoroughly.

The beneficial effects of the utility model:

(1) achieve the function of joints of optical fibre right-angle bending, can use under narrow space environment, reduce installing space.

(2) adopt split-type structural design, without die sinking casting, greatly reduce cost.

Accompanying drawing explanation

Fig. 1 is traditional four-core fiber connector construction and assembling schematic diagram;

Fig. 2 is one-piece construction schematic diagram of the present utility model;

Fig. 3 is inner structure schematic diagram of the present utility model;

Fig. 4 is assembling schematic diagram of the present utility model.

Embodiment

Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, to make advantage of the present utility model and feature can be easier to be readily appreciated by one skilled in the art, thus more explicit defining is made to protection domain of the present utility model.

As shown in Figure 1, traditional joints of optical fibre do not have straight curved formula structure, and the installing space of needs is comparatively large, is not suitable for using under narrow space environment.Use under vehicle-mounted environment such as narrow space such as grade to enable the joints of optical fibre, under the condition not changing connector shell and guarantee connector optical property, mechanical property and environmental performance, adopt split-type structural, devise a kind of joints of optical fibre as shown in Figure 1, instead of old-fashioned single tail nested structure, achieve the function of joints of optical fibre right-angle bending.

As shown in Fig. 2 to Fig. 4, a kind of joints of optical fibre of the present embodiment comprise light contact pin 1, housing 2, tail cover 4, cable jacket 5, optical fiber 6 and fibre-optical splice 7, the pin portion of light contact pin 1 is arranged on outside housing 2, the lower body of light contact pin 1 is in housing 2, the optical fiber 6 of light contact pin 1 is successively by housing 2, tail cover 4, cable jacket 5 is to fibre-optical splice 7, also comprise buffering cavity 3, described buffering cavity 3 is arranged between housing 2 and tail cover 4, form right angle structure in 90 ° is overlapped with tail, buffering cavity 3 and tail cover 4 are threaded, buffering cavity 3 inside arranges position limiting structure, optical fiber 6 realizes bending by position limiting structure.

The lower body of light contact pin 1 is arranged contact pin spring 8, the afterbody of light contact pin 1 arranges contact pin tail cap 10, the rear of contact pin tail cap 10 arranges push pedal 11, described position limiting structure comprises L bar 14 and motion bar 15, the inflection point place of L bar 14 is rotationally connected by rotating shaft 13 and buffering cavity 3 inwall, one end of L bar 14 is against in push pedal 11, the other end is fixedly connected with one end of motion bar 15, described L bar 14 is provided with groove I away from the end, one end of push pedal 11, one is connected for overlapping the cylinder of optical fiber by axis of rotation in groove I, described motion bar 15 is provided with groove II away from the end, one end of L bar 14, one is connected for overlapping the cylinder of optical fiber by axis of rotation equally in groove II, can contact pin tail cap 10 be promoted by contact pin spring 8 and then promote push pedal 11 when light contact pin 1 moves backward, the moment that push pedal 11 acts on L bar 14 makes L bar 13 rotate around the shaft.

The straight curved formula joints of optical fibre of the present embodiment are four-cores, arrange two groups of position limiting structures, and namely a L bar 14 and motion bar 15 are one group of position limiting structure.

Also comprise spring stop 9, spring stop 9 is arranged on the rear of contact pin spring 8, and it is inner that spring stop 9 is fastened on housing 2 with trip bolt 16, and spring stop 9 compresses contact pin spring 8, ensure elastic force when light contact pin 1 docks, after pulling the plug out of the socket, make light contact pin 1 return simultaneously.

Also comprise gib screw 17 and push pedal spring 12, push pedal spring 12 is arranged on gib screw 17, and gib screw 17 is fixed on push pedal 11 on spring stop 9, and push pedal spring 12 is for push pedal 11 return.

Rotating shaft 13 between L bar 14 and motion bar 15 supports optical fibre, need determine its external diameter according to the bending radius of optical fiber, and the pass between rotating shaft 13 diameter D and fiber bending radius r is: D/2 >=r.

In the joints of optical fibre mating process of the present embodiment, light lock pin 1 docks resilience, promote contact pin tail cap 10 by contact pin spring 8 to move backward, contact pin tail cap 10 promotes the motion of push pedal 11 backward directions, the moment that push pedal 11 acts on L bar 14 makes L bar 14 13 rotations around the shaft, then motion bar 15 rotates around L bar 14 and moves up backward, gives optical fiber with enough curved spaces; When in joints of optical fibre detachment process, contact pin spring 8 makes light contact pin 1 return, and push pedal 11 loses the acting force of contact pin tail cap 10, return under the elastic force effect of push pedal spring 12, now, L bar 14 loses moment loading, get back to initial position, give the optical fiber 6 shortened with the curved space.

As from the foregoing, as shown in Figure 1, traditional four-core fiber connector, plug, socket directly overlap 4 with tail and are connected, optical fiber straight is arranged on connector inside, because tail cover is fixed, therefore, when plug and socket connects installation with optical cable junction, little bending can be there is in optical fiber in plug inside, need during making to control optical fiber excess length, this easily reserves suitable surplus, for fibre-optical bending in traditional straight tail cover inside.In the straight curved formula structure of the present embodiment, as shown in Figure 3 and Figure 4, because tail overlaps 4 short and right-angle structures in 90 °, if still adopt traditional design, the surplus of optical fiber is difficult to control, floating due to lock pin during installation, easily causes the impaired and even fracture of optical fiber.Therefore, the design concept of the straight curved formula joints of optical fibre of the present embodiment adopts split-type structural design, independently buffer fiber cavity 3 is adopted to carry out the shifting amount introduced when receiving optical fiber lock pin floats, when connector inserting or when being separated, spring floating structure normally works, optical fiber back and forth can only buffering cavity in play.

Secondly, according to the minimum bending radius of optical fiber, design the stop means of limit fibre bending radius, like this, light contact pin 1, connecting very little with the amount of floating introduced when being separated the impact of optical fiber 6, fractures because bending radius is too small or affects light loss when preventing optical fiber 6 play.

In actual applications, as in onboard system, do not have larger installing space available, the joints of optical fibre of the present utility model adopt split-type structural design, and can at a right anglely bend, the installing space of needs is less, can use under narrow space environment.

Above-described embodiment is only be described preferred implementation of the present utility model; not scope of the present utility model is limited; under the prerequisite not departing from the utility model design spirit; the various distortion that those of ordinary skill in the art make the technical solution of the utility model and improvement, all should fall in protection domain that the utility model claims determine.

Claims (4)

1. joints of optical fibre, comprise light contact pin (1), housing (2), tail cover (4), cable jacket (5), optical fiber (6) and fibre-optical splice (7), the pin portion of light contact pin (1) is arranged on housing (2) outward, the lower body of light contact pin (1) is in housing (2), the optical fiber (6) of light contact pin (1) is successively by housing (2), tail cover (4), cable jacket (5) is to fibre-optical splice (7), it is characterized in that: also comprise buffering cavity (3), described buffering cavity (3) is arranged between housing (2) and tail cover (4), buffering cavity (3) and tail overlap form right angle structure in 90 °, buffering cavity (3) inside arranges position limiting structure, optical fiber (6) realizes bending by position limiting structure.

2. a kind of joints of optical fibre according to claim 1, it is characterized in that: the lower body of light contact pin (1) is arranged contact pin spring (8), the afterbody of light contact pin (1) arranges contact pin tail cap (10), the rear of contact pin tail cap (10) arranges push pedal (11), described position limiting structure comprises L bar (14) and motion bar (15), the inflection point place of L bar (14) is rotationally connected by rotating shaft (13) and buffering cavity (3) inwall, one end of L bar (14) is against in push pedal (11), the other end is fixedly connected with the one end of motion bar (15), described L bar (14) is provided with groove I away from the end, one end of push pedal (11), one is connected for overlapping the cylinder of optical fiber by axis of rotation in groove I, described motion bar (15) is provided with groove II away from the end, one end of L bar (14), one is connected for overlapping the cylinder of optical fiber by axis of rotation equally in groove II, can contact pin tail cap (10) be promoted by contact pin spring (8) and then promote push pedal (11) when light contact pin (1) moves backward, the moment that push pedal (11) acts on L bar (14) makes (13) rotation around the shaft of L bar.

3. a kind of joints of optical fibre according to claim 1 and 2, it is characterized in that: also comprise spring stop (9), spring stop (9) is arranged on the rear of contact pin spring (8), and it is inner that spring stop (9) is fastened on housing (2) with trip bolt (16).

4. a kind of joints of optical fibre according to claim 3, it is characterized in that: also comprise gib screw (17) and push pedal spring (12), push pedal spring (12) is arranged on solid screw (17), gib screw (17) is fixed on push pedal (11) on spring stop (9), and push pedal spring (12) is for push pedal (11) return.