CN110888198B

CN110888198B - Optical fiber attenuator

Info

Publication number: CN110888198B
Application number: CN201811050365.XA
Authority: CN
Inventors: 林清源; 宁科学; 曾祥旭
Original assignee: Shenzhen Wangdeyuan Technology Co ltd
Current assignee: Shenzhen Wangdeyuan Technology Co ltd
Priority date: 2018-09-10
Filing date: 2018-09-10
Publication date: 2021-04-27
Anticipated expiration: 2038-09-10
Also published as: CN110888198A

Abstract

An optical fiber attenuator comprises a male connector, a female connector arranged at intervals along the front-back direction, a retainer extending along the front-back direction and having two ends respectively connected with the male connector and the female connector, and an attenuation assembly having two ends respectively penetrating into the male connector and the female connector. The holder defines an accommodating groove extending in the front-rear direction. The attenuation component is accommodated in the accommodating groove. The attenuation component is accommodated in the holding piece, and two ends of the holding piece respectively abut against and are connected with the male joint and the female joint, so when the male joint and the female joint are stressed along the front-back direction, a certain distance can be kept without approaching or separating from each other due to the connection and fixation of the holding piece, and the attenuation component can be prevented from being pushed, concavely folded or damaged.

Description

Optical fiber attenuator

Technical Field

The present invention relates to an optical fiber assembly, and more particularly, to an optical fiber attenuator including an attenuation assembly.

Background

An optical fiber attenuator is a device for reducing the power of an optical signal of an electrically connected optical fiber line to a specific value, thereby adjusting the power of the optical signal. The optical fiber attenuator has different forms according to the attenuation principle of the optical fiber attenuator, and has different structures corresponding to connectors with different specifications. Referring to fig. 1, shown in fig. 1 is an optical fiber attenuator 1 for a corresponding MPO type connector, which includes a male connector 11 having two ferrules 110, a female connector 12 connected to the male connector 11 in a front-rear direction a with a space therebetween, and an attenuation member 13 penetrating the male connector 11 and the female connector 12 in the front-rear direction a. The attenuation module 13 is composed of a plurality of lines 131 arranged side by side for attenuating optical power, and when the male connector 11 and the female connector 12 are electrically connected to other MPO type optical fiber connectors (not shown), the power of the passing optical signal can be adjusted and reduced through the attenuation module 13.

However, the attenuation element 13 lacks external protection, and is therefore easily pushed by the male connector 11 or the female connector 12 (i.e., the male connector 11 and the female connector 12 approach or move away from each other) due to the non-buffering force during the insertion and extraction process along the front-back direction a, and finally the line 131 is damaged by the concave folding.

Disclosure of Invention

The invention aims to provide an optical fiber attenuator which can avoid the circuit recess of an attenuation component.

The optical fiber attenuator of the present invention is characterized in that: the optical fiber attenuator comprises a male connector, female connectors arranged at intervals along the front-back direction and the male connector, a retaining piece extending along the front-back direction and having two ends respectively connected with the male connector and the female connectors, and an attenuation assembly, wherein the retaining piece defines a containing groove extending along the front-back direction, the attenuation assembly is contained in the containing groove, and two ends of the attenuation assembly respectively penetrate into the male connector and the female connector.

Preferably, the optical fiber attenuator further comprises a housing sleeved on the male connector and the holder.

Preferably, the optical fiber attenuator further includes a housing, wherein the housing includes a housing accommodating the male connector and the holder, and a housing cover detachably disposed on the housing.

Preferably, the housing has an accommodating portion for accommodating the male connector, an extending portion extending from the accommodating portion toward the female connector along the front-back direction and abutting against the female connector, and an inserting seat portion extending from the accommodating portion toward a direction away from the female connector along the front-back direction, wherein the inserting seat portion defines an inserting space for the male connector to extend.

Preferably, in the optical fiber attenuator, the accommodating portion of the housing forms a plurality of mortise holes, and the housing cover has a plurality of tenons detachably and respectively clamped in the mortise holes.

Preferably, in the optical fiber attenuator, the male connector defines a first line accommodating space for extending one end of the attenuation element, the female connector defines a second line accommodating space for extending the other end of the attenuation element, the holder includes a main body defining the accommodating groove and communicating the first line accommodating space and the second line accommodating space, two protruding blocks protruding from the main body at intervals along the front-back direction and abutting against the male connector and the female connector along the front-back direction, and two insertion portions extending from two ends of the main body toward the male connector and the female connector, respectively, and the insertion portions extend onto the male connector and the female connector.

The invention has the beneficial effects that: the attenuation component is accommodated in the retaining piece, and two ends of the retaining piece respectively abut against and are connected with the male joint and the female joint, so when the male joint and the female joint are stressed along the front-back direction, a certain distance can be kept without approaching or separating from each other due to the connection and fixation of the retaining piece, and the attenuation component can be prevented from being pushed, concavely folded or damaged.

Drawings

FIG. 1 is a perspective view illustrating a general optical fiber attenuator;

FIG. 2 is an exploded perspective view illustrating an embodiment of the optical fiber attenuator of the present invention;

FIG. 3 is a side sectional view illustrating a cross-sectional aspect of the embodiment in side view; and

FIG. 4 is a top sectional view illustrating a top sectional aspect of the embodiment.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and examples.

Referring to fig. 2, fig. 3, and fig. 4, an embodiment of the optical fiber attenuator 2 of the present invention includes a male connector 3, a female connector 4 spaced from the male connector 3 along a front-back direction B, a holder 5 extending along the front-back direction B and having two ends respectively connected to the male connector 3 and the female connector 4, an attenuation element 6 accommodated in the holder 5 and having two ends respectively penetrating into the male connector 3 and the female connector 4, and a housing 7 covering the male connector 3 and the holder 5. The male connector 3 is an MPO specification male connector 3 provided with an inserting core 31, and defines a first wire accommodating space 32 communicated with the inserting core 31, and the female connector 4 is an MPO specification female connector 4 provided with a slot 41 corresponding to the inserting core 31, and defines a second wire accommodating space 42 communicated with the slot 41.

The holder 5 includes a body 51 having a U-shaped cross section viewed along the front-rear direction B to define a receiving groove 510 extending along the front-rear direction B, two protruding portions 52 protruding from the body 51 at intervals along the front-rear direction B and abutting against the male connector 3 and the female connector 4 along the front-rear direction B, and two insertion portions 53 extending from both ends of the body 51 and inserted into the male connector 3 and the female connector 4, respectively, to extend into the first wire receiving space 32 and the second wire receiving space 42. The body 51 is positioned between the male connector 3 and the female connector 4 to prevent slippage and to prevent the male connector 3 and the female connector 4 from approaching each other by the protruding portions 52 abutting against the male connector 3 and the female connector 4, respectively; the body 51 can be connected to the male connector 3 and the female connector 4 through the insertion part 53, so as to fix the position and maintain the distance between the male connector 3 and the female connector 4. The attenuation element 6 is accommodated in the accommodating groove 510 of the holder 5, and has a plurality of attenuation lines 61, two ends of which are respectively inserted into the insertion portions 53 and then extend into the first wire accommodating space 32 and the second wire accommodating space 42, and a fixing member 62 (the fixing member 62 is not shown in fig. 4, because it is a cross-sectional view, the fixing member 62 is not shown in fig. 4) for covering the attenuation lines 61 in a shooting or other manner to keep the attenuation lines 61 in parallel.

The housing 7 includes a housing 71, and a housing cover 72 detachably covering the housing 71. The housing 71 has an accommodating portion 711 for accommodating the male connector 3, an extending portion 712 extending from the front-rear direction B toward the female connector 4 and abutting against the female connector 4 for accommodating the retainer 5, and an inserting portion 713 extending from the accommodating portion 711 in the front-rear direction B away from the female connector 4. The accommodating portion 711 is formed with two tenon holes 714 opened toward left and right sides, respectively. The inserting seat portion 713 defines an inserting space 715 in which the ferrule 31 of the male connector 3 is inserted. The insertion space 715 is configured to receive an additional female connector (not shown) to connect with the male connector 3. The housing cover 72 has two latch pins 721 extending downward and detachably and respectively latched in the latch holes 714. The housing cover 72 is fitted into the housing 711 to cover the male tab 3, and fitted into the extending portion 712 to substantially cover the holder 5 and the damping member 6.

The distance between the male connector 3 and the female connector 4 can be fixed by the projection 52 and the insertion 53 of the holder 5, so that the male connector 3 and the female connector 4 can be prevented from approaching or separating from each other due to improper force application during insertion and removal, and the attenuation line 61 of the attenuation element 6 can be prevented from being pushed and dented. The shell 7 accommodates the attenuation component 6 therein, so that the pollution of the external environment can be avoided, and the service life can be prolonged. The embodiment can be used corresponding to the MPO specification, and solves the problem that attenuators of the MPO specification are rare.

In summary, the present invention can avoid the attenuation module 6 from being folded and damaged during the insertion and extraction process through the holder 5, and protect the attenuation module 6 from the outside through the housing 7, so the object of the present invention can be achieved.

Claims

1. An optical fiber attenuator, characterized by: the optical fiber attenuator comprises a male connector, a female connector arranged at intervals along the front-back direction and the male connector, a holding piece extending along the front-back direction and having two ends respectively connected with the male connector and the female connector, an attenuation component, and a shell sleeved on the male connector and the holding piece, wherein the holding piece defines a containing groove extending along the front-back direction, the attenuation component is contained in the containing groove, two ends respectively penetrate into the male connector and the female connector, the shell comprises a shell body containing the male connector and the holding piece, and a shell cover detachably arranged on the shell body, the shell body is provided with a containing part containing the male connector, an extending part extending from the containing part along the front-back direction towards the female connector and abutting against the female connector and used for containing the holding piece, and an inserting seat part extending from the containing part along the front-back direction towards the direction far away from the female connector, the inserting seat part defines an inserting space for extending the male connector part.

2. The optical fiber attenuator of claim 1, wherein: the accommodating part of the shell is provided with a plurality of tenon holes, and the shell cover is provided with a plurality of clamping tenons which are detachably clamped in the tenon holes respectively.

3. The optical fiber attenuator of claim 2, wherein: the male connector defines a first line accommodating space for extending one end of the attenuation assembly, the female connector defines a second line accommodating space for extending the other end of the attenuation assembly, the retaining member comprises a main body part defining the accommodating groove and communicating the first line accommodating space with the second line accommodating space, two lug parts convexly arranged on the main body part at intervals along the front-back direction and respectively abutting against the male connector and the female connector along the front-back direction, and two insertion parts respectively extending from two ends of the main body part towards the male connector and the female connector, wherein the insertion parts respectively extend on the male connector and the female connector.