CN210038248U - Optical fiber connector - Google Patents

Abstract

An optical fiber connector is used for arranging an end socket of a ferrule and comprises an outer shell and a main shell. The outer shell includes a surrounding wall portion, and a key portion extending forwardly from the surrounding wall portion. The main casing body includes the confession around the wall portion cover establish and around a casing wall portion that sets up the space, it is used for setting up to set up the lock pin end, casing wall portion has two edges the looks alternate shell face each other of upper and lower direction, and each shell face defines out by preceding keyway that extends backward, one of them confession of keyway the key portion embedding of shell cover. Through will be used for managing the key portion of polarity connect the wall portion that surrounds, let the user only need with outer cover dismantles the main casing body, will then the outer cover is rotatory 180 degrees after again the cover locate the main casing body alright completion polarity conversion, tear open and trade fast, simple and convenient.

Description

Optical fiber connector

Technical Field

The utility model relates to an optical fiber connector especially relates to an optical fiber connector of easily changing polarity.

Background

Referring to fig. 1, a general multi-core fiber optic connector 1(MPO) is used for inserting a ferrule end 11, and includes a main housing 12 for accommodating the ferrule end 11, a tail sleeve 13 disposed behind the main housing 12, a shell sleeve 14 sleeved on the main housing 12 and slightly movable in a front-back direction with respect to the main housing 12, and a positioning key 15 integrally protruding on the main housing 12. The positioning Key 15 is used to limit the relative position between the ferrule end 11 and other connectors during connection, and the polarity of the multi-core optical fiber connector 1 can be controlled by setting the positioning Key 15 upward (Key up) or downward (Key down), as shown in fig. 1, the positioning Key is in an upward state.

However, since the positioning key 15 of the multi-core optical fiber connector 1 is integrally formed on the main housing 12, when the polarity is changed, the ferrule end 11, the main housing 12, and the tail sleeve 13 need to be disassembled first, and then the main housing 12 and the positioning key 15 are assembled again after being rotated 180 degrees with respect to the ferrule end 11, which is time consuming and complicated, and is prone to loss or damage of the ferrule end 11.

Disclosure of Invention

An object of the utility model is to provide an easily change polarity and need not detach fiber connector of lock pin end.

The utility model discloses fiber connector for supply a lock pin end to set up, the direction of back and forth before the definition, and one is perpendicular the upper and lower direction of fore-and-aft direction, its characterized in that: the optical fiber connector comprises a shell sleeve and a main shell body, wherein the shell sleeve comprises a surrounding wall part and a key part extending forwards from the surrounding wall part, the main shell body comprises a shell wall part which is sleeved on the surrounding wall part and surrounds a setting space, the setting space is used for setting the plug core end, the shell wall part is provided with two shell surfaces which are mutually spaced along the up-down direction, each shell surface defines a key groove extending forwards and backwards, and one of the key grooves is used for embedding the key part of the shell sleeve.

The purpose of the utility model and the technical problem thereof can be further realized by adopting the following technical measures.

Preferably, in the optical fiber connector, the surrounding wall portion of the outer shell has an inner wall surface facing the main shell, the inner wall surface is recessed to form two limiting grooves spaced from each other in the up-down direction, the main shell further includes two tenon portions protruding from the outer shell surface of the outer shell wall portion at intervals in the up-down direction, the tenon portions respectively extend into the limiting grooves to clamp the outer shell wall portion, so as to limit the outer shell on the outer shell wall portion, and the tenon portions can be operated to withdraw from the limiting grooves, so as to allow the outer shell to be separated from the outer shell wall portion forward.

Preferably, the optical fiber connector defines a horizontal direction perpendicular to the front-back direction and the up-down direction, wherein the optical fiber connector further includes two elastic members respectively disposed on opposite sides of the wall portion along the horizontal direction, the outer shell further includes two abutting portions protruding on an inner wall surface of the surrounding wall at intervals along the horizontal direction, and when the outer shell moves backward relative to the main shell along the front-back direction, the abutting portions respectively press and compress the elastic members.

Preferably, the optical fiber connector further includes two side housing surfaces spaced apart from each other along the horizontal direction and connected to the outer housing surface, and each side housing surface defines an accommodating space for accommodating one of the elastic members.

Preferably, the optical fiber connector further includes two rib portions respectively protruding from the side shell surface along the horizontal direction and located in front of the accommodating space, and two rear blocking portions respectively disposed on the side shell surface and located behind the accommodating space, wherein a first guide groove is formed in each rib portion, a second guide groove is formed in each rear blocking portion, and the first guide groove of the rib portion and the second guide groove of the corresponding rear blocking portion are respectively provided for two ends of the corresponding elastic member to be disposed.

Preferably, the optical fiber connector further includes a connecting member clamped at the rear end of the wall portion of the housing, and each of the elastic members disposed at one end of the corresponding second guiding groove is disposed through the connecting member.

Preferably, the optical fiber connector further includes a spring disposed in the disposition space of the main housing, and front and rear ends of the spring respectively abut against the ferrule end and the connecting member.

Preferably, the optical fiber connector further includes a sleeve disposed at the rear end of the connecting member, and a tail sleeve disposed on the sleeve.

Preferably, the optical fiber connector is described above, wherein the key portion of the housing sleeve is a dovetail, and the key slot of the main housing is a dovetail slot.

Preferably, the optical fiber connector defines a horizontal direction perpendicular to the front-rear direction and the up-down direction, wherein the surrounding wall portion of the housing sleeve forms two notches spaced apart from each other along the horizontal direction and recessed from front to rear.

Preferably, the optical fiber connector defines a horizontal direction perpendicular to the front-back direction and the up-down direction, and each of the shell surfaces further has two openings respectively located at two opposite sides of the key slot along the horizontal direction.

The beneficial effects of the utility model reside in that: the key part for managing the polarity is connected with the surrounding wall part, so that a user only needs to detach the outer shell from the main shell, then rotates the outer shell by 180 degrees and then sleeves the outer shell on the main shell to complete polarity conversion, the insertion core end head does not need to be detached from the main shell, the main shell does not need to be detached, the replacement is quick and convenient, and the effect of simply converting the polarity is achieved.

Drawings

FIG. 1 is a perspective view illustrating a known multi-fiber optical connector;

fig. 2 is an exploded perspective view illustrating an embodiment of the fiber optic connector of the present invention;

FIG. 3 is a top sectional view illustrating a top sectional state of FIG. 2;

FIG. 4 is a perspective view illustrating the assembled state of FIG. 2; and

fig. 5 is a schematic diagram illustrating a step of changing the polarity setting according to the present embodiment.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and embodiments:

referring to fig. 2, fig. 3, and fig. 4, an embodiment of the optical fiber connector 2 of the present invention is shown. First, a front-back direction 31 (generally, the inserting and removing direction of the optical fiber connector 2), an up-down direction 32 perpendicular to the front-back direction 31, and a horizontal direction 33 perpendicular to the front-back direction 31 and the up-down direction 32 are defined. The optical fiber connector 2 includes an outer housing 21, a main housing 22 for movably covering the outer housing 21 along the front-back direction 31, a spring 23 disposed in the main housing 22 and extending along the front-back direction 31, two elastic members 24 respectively disposed at two opposite sides of the main housing 22 along the horizontal direction 33, a connecting member 25 clamped at the rear end of the main housing 22, a sleeve 26 covering the connecting member 25, and a tail sleeve 27 covering the sleeve 26. The outer housing 21 includes a surrounding wall 211 surrounding the main housing 22, a key 212 extending forward from the surrounding wall 211 along the front-rear direction 31, and two abutting portions 213 spaced apart from each other along the horizontal direction 33 and disposed on the surrounding wall 211. The surrounding wall 211 has an inner wall 214 facing the main housing 22 and protruding from the abutting block 213, the inner wall 214 is recessed to form two limiting grooves 215 spaced from each other along the up-down direction 32, and only one of the limiting grooves 215 is shown in fig. 2 for the sake of viewing angle. In this embodiment, the key 212 is a dovetail.

The main housing 22 includes a housing wall 221 surrounding an installation space 220, two locking portions 222 disposed on the housing wall 221 at intervals along the vertical direction 32, two rib portions 223 disposed on left and right sides of the housing wall 221 along the horizontal direction 33, and two backstop portions 224 disposed behind the rib portions 223 and connecting the housing wall 221. The setting space 220 is used for placing a ferrule end 4, and the ferrule end 4 is placed into the main housing 22 from the back to the front and is limited by the housing wall 221 so as not to be separated from the setting space 220 from the front. The housing wall portion 221 has two housing surfaces 225 spaced apart from each other in the vertical direction 32, and two side housing surfaces 226 spaced apart from each other in the horizontal direction 33 and connecting the housing surfaces 225. Each of the shell surfaces 225 defines a keyway 227 extending from front to back, and in this embodiment, the keyway 227 is a dovetail groove. One of the key slots 227 is used for the key part 212 to be inserted into, and the front end of each key slot 227 is open and the rear end is closed, so that the key part 212 can slide into the key slot 227 from the front end of the key slot 227 and be positioned at the rear end. Each side surface 226 is provided with a corresponding rib portion 223 and a corresponding backstop portion 224, and defines a receiving space 228 between the rib portion 223 and the backstop portion 224 along the front-back direction 31. The locking tongue portions 222 are respectively protruded from the outer shell surface 225 and extend into the limiting grooves 215, and each locking tongue portion 222 is located in the corresponding limiting groove 215 to lock the surrounding wall portion 211, so that the surrounding wall portion 211 cannot move forward relative to the shell wall portion 221. Each rib portion 223 is formed with a first guide groove a extending in the front-rear direction 31. Each of the rear blocking portions 224 defines a second guide groove B corresponding to the first guide groove a and also extending along the front-rear direction 31. It should be noted that each of the outer shell surfaces 225 may further have two openings 229 located on opposite sides of the key slot 227 along the horizontal direction 33, and each of the openings 229 is a through hole.

The spring 23 is located in the installation space 220, and the front end and the rear end of the spring respectively abut against the ferrule end 4 and the connecting member 25, so as to position the ferrule end 4 and allow the optical fiber on the ferrule end 4 to pass through along the front-rear direction 31. The elastic members 24 are respectively disposed in the accommodating spaces 228, and partially exposed to the outside and located behind the abutting block portions 213, the front end of each elastic member 24 extends forward and is inserted into the first guide groove a of the corresponding rib portion 223, the rear end extends backward and penetrates through the second guide groove B of the corresponding rear blocking portion 224, and is inserted into the connecting member 25, when a user pulls the outer shell 21 backward, the abutting block portions 213 respectively press and compress the elastic members 24 backward, so that the outer shell 21 has a margin slightly moving backward relative to the main shell 22 (until the key portion 212 abuts against the closed rear end of the key groove 227), and the elastic members 24 can release elastic potential energy to drive the outer shell 21 to reset after the user does not apply force any more. It should be noted that, in the present embodiment, the elastic member 24 is disposed at a different height along the up-down direction 32, and therefore only one of them is shown in the sectional view of fig. 3. Furthermore, the surrounding wall portion 211 of the outer shell 21 may further form two notches 216 spaced apart from each other along the horizontal direction 33 and recessed from front to back, so that when another optical fiber connector (not shown) is clipped on the main shell 22 by its own tenon, the notches 216 allow the outer shell 21 to be pulled back slightly, so that the tenon of the optical fiber connector can be opened sufficiently, and the optical fiber connector can be separated from the optical fiber connector 2, thereby reducing the stroke of pulling the outer shell 21 back.

Referring to fig. 2, 3 and 5, the outer casing 21 is retained on the main casing 22 by the closed rear ends of the key slots 227 and the locking tongue portions 222, and the key portion 212 is embedded in one of the upper and lower key slots 227 to form one polarity, when the polarity needs to be changed, only a tool needs to be inserted into the retaining slot 215 with the open front end and push the locking tongue portions 222 from front to back, so that the locking tongue portions 222 exit from the retaining slot 215, and the casing wall portion 221 is no longer locked by the locking tongue portions 222, so that a user can push the outer casing 21 relative to the main casing 22 to separate the outer casing 21 from the main casing 22, and after rotating the outer casing 21 by 180 degrees, align the key portion 212 with the other key slot 227 and pull the key portion 212 backwards, so that the outer casing 21 is installed back on the main casing 22 again, and the position of the key part 212 is reversed from top to bottom to form another polarity, fig. 5 is a schematic diagram of the conversion of the present embodiment, which illustrates a step of converting the key part 212 from the downward setting to the upward setting, so that the polarity of the present embodiment can be changed, and the step can be reversed to convert the key part 212 from the upward setting to the downward setting.

To sum up, the utility model discloses only need detach outer shell 21 alright transform polarity, and need not to tear open and trade main casing body 22 reaches lock pin end 4 can reduce the degree of difficulty of tearing open and trade and required process by a wide margin, so can reach the purpose of the utility model with the cost really.

Claims (11)

1. The utility model provides an optical fiber connector for supply a lock pin end setting, define a back and forth direction, and one perpendicular the upper and lower direction of back and forth direction, its characterized in that: the optical fiber connector comprises a shell sleeve and a main shell body, wherein the shell sleeve comprises a surrounding wall part and a key part extending forwards from the surrounding wall part, the main shell body comprises a shell wall part which is sleeved on the surrounding wall part and surrounds a setting space, the setting space is used for setting the plug core end, the shell wall part is provided with two shell surfaces which are mutually spaced along the up-down direction, each shell surface defines a key groove extending forwards and backwards, and one of the key grooves is used for embedding the key part of the shell sleeve.

2. The fiber optic connector of claim 1, wherein: the wall portion of surrounding of the outer shell is provided with an inner wall face facing the main shell, the inner wall face is sunken to form two limiting grooves which are spaced from each other along the vertical direction, the main shell further comprises two tenon portions which are respectively arranged on the outer shell face of the outer shell wall portion in a protruding mode at intervals along the vertical direction, the tenon portions respectively extend into the limiting grooves to be clamped on the outer shell wall portion, so that the outer shell is limited on the outer shell wall portion, and the tenon portions can be operated to withdraw from the limiting grooves to allow the outer shell to be separated from the outer shell wall portion forwards.

3. The fiber optic connector of claim 2, defining a horizontal direction perpendicular to the front-to-back direction and the up-to-down direction, wherein: the optical fiber connector further comprises two elastic pieces which are respectively arranged on two opposite sides of the shell wall part along the horizontal direction, the outer shell sleeve further comprises two abutting block parts which are convexly arranged on the inner wall surface of the surrounding wall at intervals along the horizontal direction, and when the outer shell sleeve moves backwards relative to the main shell body along the front-back direction, the abutting block parts respectively press and compress the elastic pieces.

4. The fiber optic connector of claim 3, wherein: the shell wall part is also provided with two side shell surfaces which are spaced apart along the horizontal direction and connected with the outer shell surface, and each side shell surface defines an accommodating space for one of the elastic pieces to be arranged.

5. The fiber optic connector of claim 4, wherein: the main casing body still includes two edges the horizontal direction is protruding respectively to be located on the lateral shell face and be located the rib portion in accommodation space the place ahead, and two set up respectively in just being located on the lateral shell face the back fender portion at accommodation space rear, first guide slot has been seted up to each rib portion, and the second guide slot has been seted up to each back fender portion, the first guide slot of rib portion and the second guide slot of corresponding back fender portion supply the both ends setting of corresponding elastic component respectively.

6. The fiber optic connector of claim 5, wherein: the optical fiber connector further comprises a connecting piece clamped at the rear end of the wall part of the shell, and each elastic piece arranged at one end of the corresponding second guide groove penetrates through the connecting piece.

7. The fiber optic connector of claim 6, wherein: the optical fiber connector further comprises a spring arranged in the space of the main shell, and the front end and the rear end of the spring respectively support against the end socket of the inserting core and the connecting piece.

8. The fiber optic connector of claim 7, wherein: the optical fiber connector further comprises a sleeve sleeved at the rear end of the connecting piece and a tail sleeve sleeved on the sleeve.

9. The fiber optic connector of claim 1, wherein: the key part of the outer shell is a dovetail, and the key groove of the main shell is a dovetail groove.

10. The fiber optic connector of claim 1, defining a horizontal direction perpendicular to the front-to-back direction and the up-to-down direction, wherein: the surrounding wall part of the outer shell forms two notches which are spaced from each other along the horizontal direction and are respectively recessed from front to back.

11. The fiber optic connector of claim 1, defining a horizontal direction perpendicular to the front-to-back direction and the up-to-down direction, wherein: each of the shell surfaces also has two openings located on opposite sides of the key slot along the horizontal direction.

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