CN201698048U

CN201698048U - Optical fiber adapter

Info

Publication number: CN201698048U
Application number: CN2010201602208U
Authority: CN
Inventors: 陈世雄; 张浩鑫
Original assignee: Anhui Young-Hearty Medical Appliance & Equipment Co Ltd
Current assignee: Anhui Young-Hearty Medical Appliance & Equipment Co Ltd
Priority date: 2010-03-20
Filing date: 2010-03-20
Publication date: 2011-01-05
Anticipated expiration: 2020-03-20

Abstract

The utility model relates to an optical fiber adapter capable of avoiding polluting end surfaces of optical fibers, in particular to an optical fiber adapter used for equipment with output optical fibers required to be plugged, unplugged and replaced frequently. A separation plate is arranged in an adapter sleeve, isolation between end surfaces of an input optical fiber and an output optical fiber can be realized through the separation plate with a light hole, an inner plate and an outer plate are integrally combined through a connecting handle to form the separation plate, the inner plate is located in the adapter sleeve, the connecting handle is located in a C-shaped adapter sleeve opening, the outer plate is located in a cavity between the outer wall of the adapter sleeve and an adapter casing, and the inner plate is axially perpendicular to the adapter sleeve and axially freely slides along the adapter sleeve within a permitted range by means of limiting the outer plate in the cavity.

Description

Fiber adapter

Affiliated technical field

The utility model relates to a kind of fiber adapter of avoiding fiber end face to pollute, especially for the fiber adapter on the equipment of frequent plug of needs and replacing output optical fibre.

Background technology

At present, the fiber adapter of known plug-in has the shell of connecting thread, a metal or ceramic adapter sleeve by two ends usually and forms.Contact pin on input optical fibre connector and the output optical fibre connector, insert relatively the adapter sleeve from the two ends of adapter respectively, and with adapter on connecting thread locking, elastic telescopic by two contact pins, two end faces of input optical fibre and output optical fibre are closely contacted, and the adapter sleeve makes input and output optical fiber keep concentric and coaxial with closely cooperating of contact pin.But, big and need frequent plug or change the occasion of output optical fibre in through-put power, frequently change the medical laser equipment of application optical fiber etc. such as needs, there is a significant disadvantages in existing fiber adapter, because two end faces of input optical fibre and output optical fibre are by tight Contact Coupled, extrusion friction repeatedly can destroy the smooth finish of fiber end face, the spot of being infected with accidentally on the output optical fibre end face also can stop fiber optic conduction or cause fiber end face to ablate and cause coupling efficiency seriously to reduce, and input optical fibre is normally drawn and is fixed on the device housings by fiber adapter in slave unit inside, in case damage, clean and change extremely trouble, facts have proved, adopt the tight coupling scheme that contact of two end faces of input optical fibre and output optical fibre, even all strict program of following the cleaning fiber end face when plugging and changing output optical fibre can not guarantee the not contaminated or damage of end face of input optical fibre at every turn.

Summary of the invention

In order to overcome the deficiency that existing fiber adapter can not prevent output optical fibre end wear and pollution, the utility model provides a kind of fiber adapter, this fiber adapter is can be in through-put power big and need frequent plug or change the occasion of output optical fibre, avoids wearing and tearing, pollution and the ablation of output optical fibre end face.

The technical scheme that its technical matters that solves the utility model adopts is: in the adapter sleeve, be provided with one with the adapter quill to vertical and can be axially movable along sleeve in sleeve, there is the spacer of light hole the middle part, at the contact pin on input optical fibre connector and the output optical fibre connector respectively when the adapter sleeve is inserted at the two ends of adapter relatively, because the spacer in the adapter sleeve separates both, avoided directly closely contacting of input optical fibre and output optical fibre end face, realize the isolation of input optical fibre end face and output optical fibre end face, and the light of input optical fibre output is coupled to output optical fibre by the light hole on the spacer.

Though input optical fibre end face and output optical fibre end face kept apart coupling efficiency is reduced, and the degree that reduces increases with the thickness of spacer, but since spacer can do very thin, by reducing the thickness of spacer, coupling loss can be dropped to very small level, and this loss is constant, and can effectively avoid the wearing and tearing and the contamination phenomenon of fiber end face by the isolation of slight distance.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a schematic diagram of the present utility model.

Fig. 2 is the main cut-open view of specific embodiment.

Fig. 3 is the A A cut-open view of Fig. 2.

Fig. 4, Fig. 5 are respectively the structural maps of C type adapter sleeve and spacer.

Fig. 6 is a spacer and the synoptic diagram that cooperates of C type adapter sleeve.

Among the figure: 1. adapter shell, 2. adapter sleeve, 2a.C type adapter sleeve openings, 3. ferrule of optical fiber connector, 4. adapter connecting thread, 5. optical fiber, 6. fiber end face, 7. spacer, sheet in the 7a., 7b. outer plate, 7c. connection handle, 8. light hole, 9. cavity, 10. the adapter quill to.

Embodiment

With reference to Fig. 1, the contact pin 3 of the input and output joints of optical fibre inserts relatively from the two ends of adapter sleeve 2 respectively, the spacer 7 that is arranged in distance sleeve 2 separates input and output fiber end face 6 thickness of a spacer, light is by light hole 8 couplings of middle part on the spacer 7, because the diameter of light hole 8 is greater than the diameter of optical fiber 5, therefore, fiber end face 6 does not contact with any object, can guarantee fiber end face, the particularly not frayed and pollution of the end face of input optical fibre 5, in order to guarantee coupling efficiency, spacer 7 may command thickness are below 0.15mm.

With reference to Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, in order to make spacer 7 keep vertical attitude and can from adapter sleeve 2, not come off with axial 10 of adapter sleeve, adapter sleeve 2 is C type adapter sleeves that opening 2a is arranged as shown in Figure 4, spacer 7 is fused by connection handle 7c by interior sheet 7a and outer plate 7b and forms, and a cavity 9 that can hold outer plate 7b is arranged between the outer wall of adapter shell 1 and adapter sleeve 2.

With reference to Fig. 2, Fig. 3, Fig. 6, connection handle 7c passes C type adapter sleeve openings 2a and slides therein, interior sheet 7a is arranged in the inner chamber of adapter sleeve 2, in the cavity 9 of outer plate 7b between adapter sleeve 2 outer walls and adapter shell, interior sheet 7a is owing to there is a restriction that is attached thereto and is enclosed within the outer plate 7b on adapter sleeve 2 outer walls by connection handle 7c, can keep vertical attitude with axial 10 of adapter sleeve, outer plate 7b can only slide in cavity 9 restricted portions, and whole isolated sheet 7 can not come off from adapter.

The solution that provides according to specific embodiment, the sheet 7a that is arranged in adapter sleeve 2 always keeps being free to slide in the scope of allowing to 10 to 10 attitude and along the adapter quill perpendicular to the adapter quill, after the contact pin 3 of the input and output joints of optical fibre locks from the two ends insertion of adapter and by connecting thread 4, interior sheet 7a has played the effect of isolating the input and output fiber end face, and light is realized coupling by light hole 8.

Claims

1. fiber adapter comprises adapter shell and is fixed on adapter sleeve in the shell, it is characterized in that: in the adapter sleeve, be provided with one with the adapter quill to vertical spacer, there is a light hole middle part of spacer.

2. fiber adapter according to claim 1, it is characterized in that: a cavity that can hold outer plate is arranged between adapter shell and the adapter sleeve, the adapter sleeve is a C type adapter sleeve that opening is arranged, spacer is formed one by interior sheet, outer plate by connection handle, interior sheet is positioned at the adapter sleeve, connection handle is arranged in C type adapter sleeve openings, in the cavity of outer plate between adapter sleeve outer wall and adapter shell.