CN201583690U

CN201583690U - Optical connector

Info

Publication number: CN201583690U
Application number: CN2009202714049U
Authority: CN
Inventors: 方尚杰
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: 2009-11-20
Publication date: 2010-09-15
Anticipated expiration: 2019-11-20

Abstract

The utility model discloses an optical connector which comprises a shell; the shell is internally provided with a stepped hole provided with a contact element; the stepped hole is internally provided with the contact element which comprises a flange plate; an axial ring is arranged on the peripheral surface of the flange plate close to the front end surface, and a thin neck structure is positioned on the peripheral surface of the flange plate close to the rear end surface; the thin neck structure is sheathed with an elastic sleeve, and a spring is sheathed between the elastic sleeve and the axial ring of the flange plate; the top of the spring is arranged between the axial ring of the flange plate and the corresponding end surface of the elastic sleeve; the front section of a central hole of the elastic sleeve is supported and matched with the peripheral surface in front of the thin neck structure of the flange plate in a sliding way; the tail of the central hole of the elastic sleeve is provided with a necking down stepped hole section with a radial elastic expansion structure, and the necking down stepped hole section is matched with the peripheral surface of the thin neck structure; and the rear end surface of the elastic sleeve is matched with a corresponding structure of the shell in a blocking way. The optical connector replaces a front sleeve in the prior art by the elastic sleeve, and reduces the radial size of the contact element, thus reducing the size of the optical connector.

Description

A kind of optical connector

Technical field

The utility model relates to a kind of optical connector, belongs to optical communication field.

Background technology

Existing a kind of optical connector as shown in Figure 1, comprise connector shell 21, have in the housing 21 and the corresponding shoulder hole of optical fiber contact, be provided with optical fiber contact 31 in the shoulder hole, the front end face of the protheca 100 of optical fiber contact 31 matches with the cascaded surface of the shoulder hole of housing 21, the back cover 200 of optical fiber contact 31 is provided with the axle collar, and the front end face that the rear end face of this axle collar and is fixedly installed on the pressing plate 41 on the housing 21 matches, thereby optical fiber contact 32 is fixed in the housing 21.The optical fiber contact of optical connector shown in Figure 1 is the disclosed rear jacket stationary type fiber optic cable connector contact member of Chinese patent instructions that application number is 200720003373.X, comprise contact pin, contact pin caudal peduncle, protheca, spring and back cover, wherein contact pin is fixedly connected and be assemblied in the ladder endoporus of protheca with the contact pin caudal peduncle, the front end face of contact pin caudal peduncle cooperates with the cascaded surface of protheca shoulder hole, the less endoporus section of the outer peripheral face of contact pin and protheca point diameter cooperates, and stretches out from its endoporus.The back cover is fixedly mounted on the protheca rear end, the buckle structure of back cover front end and the corresponding buckle structure secure fit on the protheca back segment elastic actuating structure endoporus side face, spring housing is contained on the minor diameter side face of contact pin caudal peduncle tail end, the front end top is contained on the cascaded surface of contact pin caudal peduncle, the top, rear end is contained in the front end of back cover, and the rear end face of contact pin caudal peduncle does not contact with the front end face of back cover.Optical cable is fixed on cover rear end, back by heat-shrink tube, the hole that puts after optical fiber passes is connected with contact pin, the contact pin caudal peduncle is connected by spring with the back cover, when the plugs and sockets of optical connector plugs together, the contact pin Elastic Contact of plugs and sockets contact element is also stressed, the stressed back of contact element overcomes spring force with the contact pin caudal peduncle and retreats, thereby realizes reliably plugging together of optical connector.This utility model is simple in structure, easy to process, plugs together reliably, still, because the contact element arranged outside has protheca, spring is arranged in the protheca, causes the radial dimension of contact element bigger, thereby cause the radial dimension of optical connector front end bigger, can not satisfy the requirement of optical communication equipment miniaturization; In addition, the back cover of this utility model is fixed on the elastic actuating structure of protheca back segment by the spiral-lock structure between itself and the protheca, because the protheca back segment has the elastic actuating performance,, cause the globality of contact element bad so the stability maintenance between the cover is poor behind the protheca.

The utility model content

The purpose of this utility model provides a kind of optical connector, to have solved in the prior art owing to the contact element arranged outside the bigger problem of optical connector front end radial dimension that protheca causes.

In order to realize above purpose, the technical scheme that the utility model adopted is: a kind of optical connector, comprise housing, has the shoulder hole that contact element is set in the housing, be provided with contact element in this shoulder hole, it is characterized in that: described contact element comprises a ring flange, this ring flange has one and extends to the installation passage of rear end face from front end face, the front end of this installation passage is set with contact pin, ring flange is provided with an axle collar near the outer peripheral face of front end face, outer peripheral face near rear end face is provided with a thin neck structure, this thin neck structure place is set with a resilient sleeve, be set with a spring between the axle collar of this resilient sleeve and ring flange, this spring top is contained between the corresponding end face of the ring flange axle collar and resilient sleeve, the leading portion of described resilient sleeve center pit cooperates with the thin neck structure outer peripheral face sliding support before of ring flange, described resilient sleeve center pit afterbody has the reducing shoulder hole section that radial elastic actuates structure and cooperates with the outer peripheral face of thin neck structure, and the rear end face of described resilient sleeve cooperates with the counter structure block of housing.

The counter structure of described housing is that the tail cover that is screwed onto housing shoulder hole tail end is fitted in the pressing plate on the housing, the front end face of this pressing plate cooperates with the rear end face of described resilient sleeve, and the front end face of described ring flange cooperates with the corresponding cascaded surface of the shoulder hole of described housing.

The rear end extension of described ring flange is provided with the fixedly shaft part of optical cable.

The shaft part of described fixedly optical cable is the axle that is provided with more than one annular groove.

It is the elastic claw that the axial through slot that extends to rear end face that the quilt of resilient sleeve rear end evenly is provided with along resilient sleeve rear end outer peripheral face is divided into that described radial elastic actuates structure.

Described elastic claw is 2～6.

The spring of contact element of the present utility model and the resilient sleeve that is used for fixing with the optical connector housing all have been assemblied in the ring flange outer peripheral face, the front end top of spring is contained on the axle collar of ring flange, the top, rear end is contained on the front end face of resilient sleeve, ring flange directly keeps the stability of spring, replace protheca of the prior art with resilient sleeve, reduced the radial dimension of contact element, thereby reduced the radial dimension of optical connector front end, further, because the spring housing of contact element of the present utility model is contained on the outer peripheral face of ring flange, ring flange can keep the stability of spring, the phenomenon that spring can not take place radially to pass in and out when resilient sleeve is installed, installation is more prone to, the efficiency of assembling height of optical connector.

Simultaneously, contact element of the present utility model is fixedly mounted in the housing by the front end face of its ring flange and the rear end face of its resilient sleeve, the error of the decrement of spring is just relevant with the mismachining tolerance of ring flange and resilient sleeve so, thereby has saved the error that protheca has been avoided the decrement of the spring that the mismachining tolerance by protheca causes.

In addition, the optical fiber shaft part that is used for fixing that the ring flange rear end of contact element of the present utility model is provided with is the axle that is provided with more than one annular groove, and annular groove can increase friction force, makes optical cable reliable fixing of ring flange rear end.

Description of drawings

Fig. 1 is the cut-open view of existing optical connector;

Fig. 2 is the cut-open view of the structural representation looked of the utility model master;

Fig. 3 is the left view (not containing dust cover) of Fig. 2;

Fig. 4 is the cut-open view of the structural representation that the master of contact element looks among Fig. 2;

Fig. 5 is the cut-open view of ring flange among Fig. 4;

Fig. 6 is the cut-open view of resilient sleeve among Fig. 4;

Fig. 7 is the right view of Fig. 6.

Embodiment

In Fig. 2, Fig. 3, a kind of optical connector, comprise optical connector housing 21, have in the housing 21 and optical fiber contact 31 corresponding shoulder holes, be provided with optical fiber contact 31 in the shoulder hole, the front end face of the ring flange of optical fiber contact 31 matches with the corresponding cascaded surface of the shoulder hole of housing 21, and the rear end face of the resilient sleeve of optical fiber contact 31 matches with the front end face of pressing plate 41, thereby optical connector 31 is fixedly installed in the housing 21.The tail cover 61 that the shoulder hole tail end that pressing plate 41 is installed optical fiber contact by optical connector housing 21 is spirally connected is pressed on the optical connector housing 21, is provided with anti-rotation structure between pressing plate 41 and the optical connector housing 21.The rear end axle of tail cover 61 is the shaft part of crimping optical cable, and the aramid fiber of outer fiber overlaps on the shaft part that is used for fixing optical cable 91 of 61 rear ends at tail by pressure welding case 71 pressing and fixing, thereby has realized optical cable 91 fixing on tail cover 61.The tail end of optical connector is provided with the rubber sheath 81 that is installed on optical connector housing 21 afterbodys.The front end of optical connector is provided with dust cover 11, and in optical connector storage and transportation, dust cover 11 can prevent that dust from entering in the optical connector.

At Fig. 4, Fig. 5, Fig. 6, among Fig. 7, corresponding above-mentioned Fig. 2, the contact element of the optical connector among Fig. 3 comprises a ring flange 4, the front end that ring flange 4 is installed passage is provided with contact pin 3, between contact pin 3 and the installation passage is interference fit, the rear end face of ring flange 4 is provided with and is used to insert optical fiber feeding mouth, optical fiber in the optical cable 91 feeds a mouthful installation passage that enters by ring flange from optical fiber and enters the center pit of contact pin 3, realize being connected with contact pin 3, installation passage on the ring flange 4 is installed the part of contact pin 3 greater than the part that feeds optical fiber, both form a cascaded surface in the joint, the end face of contact pin 3 cooperates with this cascaded surface, and the determining positions of cascaded surface contact pin 3 and inserted the degree of depth that ring flange is installed passage.Be equipped with a resilient sleeve 6 by spring 5 elasticity that are sleeved on the ring flange outer peripheral face on the outer peripheral face of ring flange 4, the front end of spring 5 is stuck on the shaft shoulder of the axle collar of ring flange 4 front ends, and the rear end of spring 5 is used to push the front end of resilient sleeve 6.The position that resilient sleeve 6 is installed on the outer peripheral face of ring flange 4 is a thin neck structure 9, the rear end face 14 of resilient sleeve 6 does not cooperate the globality that keeps in touch part with the back cascaded surface 10 of thin neck structure 9 when contact element is installed in the optical connector housing, after contact element is installed in the optical connector housing just with contact element carried out spacing pressing plate cooperate.The rear end face 14 of resilient sleeve 6 cooperates with the back cascaded surface 10 of thin neck structure 9, the center pit of resilient sleeve 6 is the pre-large post-small shoulder hole of radius, the diameter of wealthy mouthful of section of the center pit of resilient sleeve 6 and the equal diameters of ring flange 6 outer peripheral faces, the reducing section of the center pit of resilient sleeve 6 cooperates with the outer peripheral face of thin neck structure 9, wealthy mouthful of section of the center pit of resilient sleeve 6 cooperates with thin neck structure 9 ring flange 4 outer peripheral face sliding supports before, and the cascaded surface of the center pit of resilient sleeve 6 is spacing the cooperation with the preceding cascaded surface of thin neck structure 9.The rear end of resilient sleeve 6 evenly is provided with four axial through slots 12 that extend to rear end face along outer peripheral face, the rear end of resilient sleeve 6 is divided into four elastic claws 13 of symmetry.Elastic claw 13 makes the rear end of resilient sleeve 6 have elasticity, with resilient sleeve 6 when the rear end of ring flange 4 is installed on the ring flange 4, because the diameter of the reducing section of the center pit of resilient sleeve 6 is less than the outer peripheral face diameter of ring flange 4, elastic claw 13 will open during installation, when resilient sleeve 6 moves forward to thin neck structure 9 places of ring flange 4, elastic claw 13 restores to the original state, and resilient sleeve 6 rear end faces cooperate with the back cascaded surface 10 of thin neck structure 9.

The cable crimp of above-mentioned optical connector puts at tail in the present embodiment, also the tail end of ring flange can be prolonged the fixedly shaft part of optical cable is set, direct with cable crimp on the extension of ring flange tail end.

It is elastic claw that the radial elastic of the resilient sleeve of present embodiment actuates structure, also the C jacket that has the axial shrinkage function.The elastic claw of the utility model embodiment is four, also can be two, three, five or six.

Claims

1. optical connector, comprise housing, has the shoulder hole that contact element is set in the housing, be provided with contact element in this shoulder hole, it is characterized in that: described contact element comprises a ring flange, this ring flange has one and extends to the installation passage of rear end face from front end face, the front end of this installation passage is set with contact pin, ring flange is provided with an axle collar near the outer peripheral face of front end face, outer peripheral face near rear end face is provided with a thin neck structure, this thin neck structure place is set with a resilient sleeve, be set with a spring between the axle collar of this resilient sleeve and ring flange, this spring top is contained between the corresponding end face of the ring flange axle collar and resilient sleeve, the leading portion of described resilient sleeve center pit cooperates with the thin neck structure outer peripheral face sliding support before of ring flange, described resilient sleeve center pit afterbody has the reducing shoulder hole section that radial elastic actuates structure and cooperates with the outer peripheral face of thin neck structure, and the rear end face of described resilient sleeve cooperates with the counter structure block of housing.

2. optical connector according to claim 1, it is characterized in that: the counter structure of described housing is that the tail cover that is screwed onto housing shoulder hole tail end is fitted in the pressing plate on the housing, the front end face of this pressing plate cooperates with the rear end face of described resilient sleeve, and the front end face of described ring flange cooperates with the corresponding cascaded surface of the shoulder hole of described housing.

3. optical connector according to claim 2 is characterized in that: the rear end extension of described ring flange is provided with the fixedly shaft part of optical cable.

4. optical connector according to claim 3 is characterized in that: the shaft part of described fixedly optical cable is the axle that is provided with more than one annular groove.

5. according to claim 1 or 2 or 3 or 4 described optical connectors, it is characterized in that: it is the elastic claw that the axial through slot that extends to rear end face that the quilt of resilient sleeve rear end evenly is provided with along resilient sleeve rear end outer peripheral face is divided into that described radial elastic actuates structure.

6. optical connector according to claim 5 is characterized in that: described elastic claw is 2～6.