CN101672955B

CN101672955B - Optical fiber contact

Info

Publication number: CN101672955B
Application number: CN2009102056250A
Authority: CN
Inventors: 姚强
Original assignee: China Aviation Optical Electrical Technology Co Ltd
Current assignee: China Aviation Optical Electrical Technology Co Ltd
Priority date: 2009-10-02
Filing date: 2009-10-02
Publication date: 2012-07-18
Anticipated expiration: 2029-10-02
Also published as: CN101672955A

Abstract

The invention relates to an optical fiber contact. The optical fiber contact comprises a flange with a stepped circumference. An inner bore of a major-diameter shaft section at the front end of the flange is provided with a contact pin, a minor-diameter shaft section at the rear end of the flange is sheathed with a spring, the tail end of the flange is provided with a support sleeve, extends into the front section of an inner bore of the support sleeve and is matched with a corresponding structure at the front section of the inner bore of the support sleeve to form a sliding anti-dropping structure, the front end of the spring is arranged against a stepped end face of the flange, and the rear end of the spring is arranged against a front end face of the support sleeve. The flange and the support sleeve are connected in sliding anti-dropping fit and the spring is limited by the flange and the support sleeve, thus avoiding a front sleeve of the prior art; and the sliding anti-dropping structure is formed by matching a rivet turning structure at the tail end of the flange and a step structure at the front section of the inner bore of the support sleeve and the compression amount of the spring is ensured by a rivet turning tooling, thus avoiding the problem of not easily ensuring precision of the compression amount of the spring due to threaded connection between the flange and the support sleeve.

Description

Optical fiber contact

Technical field

The present invention relates to a kind of optical fiber contact.

Background technology

Application number is that the Chinese patent instructions of 2007200003408.X discloses a kind of jack contact that is used for the optical connector plug, and this contact element is made up of protheca, support set, contact pin caudal peduncle, contact pin, porcelain bushing, spring and optical cable, and the contact pin caudal peduncle is one and has the step sleeve pipe that step connects endoporus; The endoporus of its front end and cylindrical are all greater than the rear end; The rear end of contact pin insert in the larger diameter internal bore of contact pin caudal peduncle front end and with this larger diameter internal bore interference fit, porcelain bushing is enclosed within the leading portion of contact pin, protheca has the inner bore of step of perforation; The contact pin caudal peduncle is arranged in the large diameter hole of protheca leading portion; The rear end of contact pin caudal peduncle passes from the minor diameter endoporus of protheca back segment, and spring housing is arranged in the inner chamber of protheca front end large diameter hole on the minor diameter external cylindrical surface of contact pin caudal peduncle; The back cover is one and has the sleeve pipe that connects endoporus; Its front end face is close to the rear end face of protheca, and the rear end of contact pin caudal peduncle puts in the front port of back cover endoporus, and the front end of back cover endoporus has internal thread; There is external thread the rear end of contact pin caudal peduncle, and the logical above-mentioned screw thread of contact pin caudal peduncle is connected with the back cover.The spring housing of these innovation and creation is contained on the minor diameter external cylindrical surface of contact pin caudal peduncle; And the rear end of contact pin caudal peduncle through its minor diameter is spirally connected with the back cover; So, the decrement of spring just guarantees that by the amount in the cover endoporus after the precession of contact pin caudal peduncle generally all there is mismachining tolerance in part; Because part relevant with spring in these innovation and creation is more; Therefore the error that influences amount of spring compression is just more, comprises the mismachining tolerance of ring flange, the mismachining tolerance of protheca and the mismachining tolerance of back cover, the influence of screwed degree when adding the contact element assembling; The decrement of spring just is not easy accurate assurance, and this just causes the performance between each contact element of many contact elements connector inconsistent.In addition, because the contact pin caudal peduncle is fixedly connected with the back cover, so need protheca to keep in touch the elasticity of part, the existence of protheca makes that the radial dimension of contact element is bigger, and simultaneously, machining screw is also relatively more difficult on small structure.

Summary of the invention

The purpose of this invention is to provide that a kind of physical dimension is little, technology is simple, the optical fiber contact of handling ease.

For realizing above-mentioned purpose; The present invention adopts following technical scheme: a kind of optical fiber contact, comprise ring flange with ladder outer peripheral face, and be provided with contact pin in the endoporus of the major diameter front end shaft part of said ring flange; Be set with a spring on the shaft part of minor diameter rear end; Tail end is provided with a support set, and the tail end of said ring flange stretches into the leading portion of support set endoporus, and cooperates formation slip drop-proof structure with the counter structure of support set endoporus leading portion; The front end top of said spring is contained on the ladder end face of ring flange, and the top, rear end is contained on the front end face of support set.

Said slip drop-proof structure is cooperated with the ledge structure of support set endoporus leading portion and is constituted by the riveting structure of turning over of ring flange tail end.

The side face of said support set is provided with a protruding key.

Said protruding key is square.

The back segment of said support set endoporus is provided with internal thread, is connected with in this internal thread to have the interior cover that optical fiber feeds the hole, and the outer peripheral face of interior cover rear is provided with pressure welding case, and this pressure welding case and interior cover rear constitute the tensile structure of crimping fiber outer layer aramid fiber.

The outer peripheral face of said optical fiber contact back segment is provided with rubber sheath, and this sheath puts in being fixed on through the mutual buckle structure that is arranged on said tensile structure front end.

Be set with a spring on the minor diameter rear end shaft part of ring flange of the present invention; Tail end is provided with a support set, and the tail end of ring flange cooperates formation slip drop-proof structure with the counter structure of support set endoporus leading portion, and the front end top of spring is contained on the ladder end face of ring flange; The top, rear end is contained on the front end face of support set; The periphery of spring has no structure, has reduced the radial structure chi of contact element, and ring flange is connected through drop-proof structure with support set has avoided employing to be threaded; Simplified technology, processing is more prone to.

Slip drop-proof structure of the present invention is cooperated with the ledge structure of support set endoporus leading portion and is constituted by the riveting structure of turning over of ring flange tail end; The decrement of spring is just adorned and is guaranteed by turning over riveter like this; Avoided ring flange to be not easy the accurately problem of assurance, when saving protheca, solved the problem that the decrement of the spring of contact element is not easy to guarantee in the prior art with the amount of spring compression that support set causes through being threaded.

The side face of support set of the present invention is provided with a square protruding key, and after optical fiber contact was installed in the optical connector housing, this protruding key can prevent that contact element from rotating with respect to connector shell, thereby can improve the stability of connector optical property.

The outer peripheral face of rear end of the present invention is provided with through mutual buckle structure and is fixed on the rubber sheath on the interior outer peripheral face that overlaps, and this sheath can be protected the optical cable of contact element afterbody, avoids stress to concentrate.

Description of drawings

Fig. 1 is an one-piece construction synoptic diagram of the present invention;

Fig. 2 is the partial enlarged drawing at A place among Fig. 1;

Fig. 3 is the stereographic map of support set among Fig. 1.

Embodiment

In Fig. 1, Fig. 2, Fig. 3; A kind of optical fiber contact; Comprise the ring flange 2 with ladder outer peripheral face, interference is equipped with contact pin 1 in the hole of the major diameter front end shaft part of ring flange 2, is set with spring 3 on the minor diameter rear end shaft part of ring flange 2; The minor diameter tail end of ring flange 2 stretches into the endoporus leading portion with the support set 4 that connects endoporus; And cooperate with the ledge structure 10 of support set 4 endoporus leading portions and constitute the slip anti-avulsion and cooperate through the riveting structure 9 of turning over of its tail end setting, the front end top of spring 3 is contained on the ladder end face of ring flange 2 peripheries, and the top, rear end is contained on the front end face of support set 4.The side face of support set 4 is provided with a square protruding key 11, and after contact element was packed connector shell into, this protruding key 11 was used to prevent that contact element from rotating with respect to connector shell.The back segment of the endoporus of support set 4 is provided with internal thread, is connected with in this internal thread to have the interior cover 5 that optical fiber feeds the hole.In the shaft part of cover 5 tail end be provided with pressure welding case 6, pressure welding case 6 is formed tensile structure with the shaft part of the tail end of interior cover 5, in optical cable 8 outer field aramid fibers are crimped on the shaft part of the tail end of cover 5, thereby realizes the fixing of optical cable 8.The outer peripheral face of optical fiber contact back segment is provided with glue material sheath 7, this sheath 7 through and interior cover 5 between mutual buckle structure be fixed on cover 5 the outer peripheral face.

The slip drop-proof structure of present embodiment is cooperated with the ledge structure of support set endoporus leading portion and is constituted by the riveting structure of turning over of ring flange tail end, and the riveting of turning over of ring flange tail end also can be the block that is installed in the ring flange tail end through screw thread, riveted joint or interference fit.

Claims

1. optical fiber contact; Comprise ring flange, be provided with contact pin in the endoporus of the major diameter front end shaft part of said ring flange, be set with a spring on the shaft part of minor diameter rear end with ladder outer peripheral face; Tail end is provided with a support set; It is characterized in that: the tail end of said ring flange stretches into the leading portion of support set endoporus, and cooperates formation slip drop-proof structure with the counter structure of support set endoporus leading portion, and the front end top of said spring is contained on the ladder end face of ring flange; Rear end top is contained on the front end face of support set, and said slip drop-proof structure is cooperated with the ledge structure of support set endoporus leading portion and constituted by the riveting structure of turning over of ring flange tail end.

2. optical fiber contact according to claim 1 is characterized in that: the side face of said support set is provided with a protruding key.

3. optical fiber contact according to claim 2 is characterized in that: said protruding key is square.

4. according to claim 1 or 2 or 3 described optical fiber contacts; It is characterized in that: the back segment of said support set endoporus is provided with internal thread; Be connected with in this internal thread and have the interior cover that optical fiber feeds the hole; The outer peripheral face of interior cover rear is provided with pressure welding case, and this pressure welding case and interior cover rear constitute the tensile structure of crimping fiber outer layer aramid fiber.

5. light contact element according to claim 4 is characterized in that: the outer peripheral face of said optical fiber contact back segment is provided with rubber sheath, and this sheath puts in being fixed on through the mutual buckle structure that is arranged on said tensile structure front end.