CN215678858U - Prefabricated connector and prefabricated connector assembly - Google Patents

Abstract

The utility model provides a prefabricated connector and a prefabricated connector assembly, and relates to the technical field of optical cable connection, wherein the prefabricated connector comprises a connector shell assembly and an insertion core assembly, a connector clamping groove is arranged on the outer wall of the connector shell assembly, and when the prefabricated connector and an adapter are inserted in place, the connector clamping groove is suitable for being clamped with an adapter buckle on the adapter; the connector locking sleeve is axially movably sleeved on the connector shell assembly, and is sleeved outside the adapter buckle when the connector locking sleeve is in a locking position; the connector retaining structure is used for retaining the connector locking sleeve at a locking position and releasing the retention of the connector locking sleeve under the action of external force, and a first key block on the inner wall of the connector shell assembly is suitable for being embedded into a first key groove on the tail handle and a guide limiting groove on the adapter; the technical effect that the prefabricated connector and the adapter are connected conveniently, quickly and reliably is achieved.

Description

Prefabricated connector and prefabricated connector assembly

Technical Field

The utility model relates to the technical field of optical cable connection, in particular to a prefabricated connector and a prefabricated connector assembly.

Background

With the large-scale construction of FTTH, the network is deeply influencing our life, the deployment of optical fiber network, the arrangement of optical cable is an extremely important link, the terminal end of the existing optical cable mainly adopts the mode of welding tail fiber, assembling a quick connector on site and a pre-end connector, the existing pre-end connector is connected and fixed in a mode similar to thread fixing, the construction operation needs to be twisted, the operation is troublesome, and the phenomenon of loosening can occur when the optical cable is acted by external force in the twisting mode, so that signal interruption is caused, and the transmission performance is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a prefabricated connector and a prefabricated connector assembly which are convenient, rapid and reliable to connect, and aims to solve the technical problems that in the prior art, the prefabricated connector and an adapter are troublesome to screw, the connection part is easy to loosen under the action of external force, and the stability and the reliability are poor.

The utility model provides a prefabricated connector, which is suitable for being butted with an adapter, wherein a guide limiting groove or a guide limiting block is arranged on the adapter, and the prefabricated connector comprises:

the connector shell assembly is provided with a ferrule assembly mounting cavity at a first end and an optical cable leading-in cavity communicated with the ferrule assembly mounting cavity at a second end;

the ferrule assembly is arranged in the ferrule assembly mounting cavity and is suitable for optical fiber insertion connection of an optical cable introduced from the optical cable introduction cavity;

further comprising:

the connector clamping groove is arranged on the outer wall of the connector shell assembly, and is suitable for being clamped with an adapter buckle on the adapter when the prefabricated connector and the adapter are oppositely inserted in place;

the connector locking sleeve is sleeved on the outer wall of the first end of the connector shell assembly in an axially movable manner, and when the connector locking sleeve is located at a locking position, the connector locking sleeve is sleeved outside the adapter buckle clamped with the connector clamping groove to prevent the adapter buckle from being separated from the connector clamping groove;

a connector retaining structure for retaining the connector lock sleeve in the locking position and releasing the retention of the connector lock sleeve under an external force;

the inner wall of the connector shell assembly is provided with a first key block, the outer wall of the tail handle of the ferrule assembly is provided with a first key groove, the first key groove is suitable for the first key block to be embedded, and the first key block is suitable for being embedded into a guide limiting groove on the adapter when the prefabricated connector and the adapter are oppositely inserted;

or

The inner wall of the connector shell assembly is provided with a second key groove, the outer wall of the tail handle of the ferrule assembly is provided with a second key block, the second key groove is suitable for being embedded into the second key block, and the second key block is suitable for being embedded into a guide limiting block on the adapter when the prefabricated connector and the adapter are oppositely inserted.

Further, the connector holding structure includes a connector elastic member, the connector elastic member is disposed between the connector lock sleeve and the connector housing assembly, and an elastic force thereof acts on the connector lock sleeve to hold the connector lock sleeve in the lock position.

Further, be equipped with connector lock sleeve recess along axial direction on the inner wall of connector lock sleeve, be equipped with the connector recess along axial direction on the outer wall of the first end of connector housing subassembly, connector lock sleeve recess with the cooperation of connector recess forms the installation the connector elastic component mounting groove of connector elastic component.

Furthermore, a limiting groove is further formed in the outer wall of the first end of the connector shell assembly, and a first boss is formed between the limiting groove and the connector clamping groove; the connector lock sleeve is characterized in that a limiting block is arranged on the inner wall of the connector lock sleeve and is suitable for being embedded into the limiting groove, the limiting groove can be arranged in the limiting groove and can move in the length direction of the limiting groove, the length of the limiting groove is arranged in the axial direction of the connector shell assembly, and the distance between the locking position and the unlocking position is not smaller than.

Further, the first surface of the limiting block facing the bottom surface of the limiting groove is an inclined surface, and the inclined surface is used for guiding the first end of the connector shell assembly to be inserted from the second end of the connector locking sleeve.

Further, a connector guide inclined plane is further arranged on the outer wall of the first end of the connector shell assembly and used for guiding the adapter buckle to enter the connector clamping groove;

and/or

The inner wall of the first end of the connector locking sleeve is provided with a connector clearance groove, and the connector clearance groove is suitable for the adapter buckle to be inserted.

Further, the connector housing assembly includes:

the first end of the first connector shell assembly is provided with the ferrule assembly mounting cavity, and the connector clamping groove is formed in the outer wall of the first connector shell assembly;

a second connector housing assembly having a cable entry cavity formed therein;

the supporting piece is of a hollow structure, the first end of the supporting piece is inserted into the second end of the first connector shell assembly and connected with the ferrule assembly, the second end of the supporting piece is inserted into the second connector shell assembly, and the optical fiber is suitable for penetrating through the supporting piece and connected with the ferrule assembly.

Furthermore, a first connecting piece is arranged between the second end of the first connector shell assembly and the first end of the second connector shell assembly, a limiting check ring is arranged on the supporting piece, and the limiting check ring is matched with the end part of the second end of the first connector shell assembly to limit the first connecting piece.

Further, still include the connector helmet, be equipped with connector helmet buckle on the connector helmet, prefabricated connector with when the connector helmet targets in place to inserting, the connector draw-in groove be suitable for with connector helmet buckle joint, just when connector lock sleeve removes to latched position, connector lock sleeve cover locate with connector draw-in groove joint outside the connector helmet buckle, prevent the connector helmet buckle is followed deviate from in the connector draw-in groove.

The prefabricated connector assembly comprises the prefabricated connector and an adapter butted with the prefabricated connector, wherein the outer wall of the adapter is provided with the guide limiting groove or the guide limiting block, and the adapter is also provided with the adapter buckle.

According to the prefabricated connector and the prefabricated connector assembly provided by the utility model, when the prefabricated connector is butted with the adapter, an operator only needs to pull the connector locking sleeve to the unlocking position firstly, so that the prefabricated connector and the adapter can be smoothly inserted in place, at the moment, the adapter buckle on the adapter falls into the connector clamping groove, then the connector locking sleeve is moved to the locking position, so that the connector locking sleeve is sleeved outside the adapter buckle to form constraint limitation on the adapter buckle, the adapter buckle is prevented from being outwards expanded to be separated from the connector clamping groove under the action of external force, and the connector locking sleeve is kept in the locking position under the action of the connector retaining structure, so that the self-locking of the connection position of the prefabricated connector and the adapter is reliably realized, and the connection reliability is ensured. The unlocking position is the position where the connector lock sleeve is completely separated from the restraint limit formed on the adapter buckle in the clamping state.

The first key block on the connector shell assembly is matched with the first key groove on the tail handle, so that the rotation displacement of the ferrule assembly can be prevented, internal components in the connector shell assembly, such as the ferrule assembly, can be effectively protected, the stability and the reliability of ferrule butt joint can be ensured, after the prefabricated connector is in butt joint with the adapter, the first key block is in embedded fit with the guide limiting groove on the adapter, the alignment of the ferrule reference can be ensured when the adapter is in butt joint with the prefabricated connector, meanwhile, the whole rotation displacement of the optical cable can be prevented after the butt joint, when the optical cable is subjected to the action of external force, the connector shell assembly (particularly a protective outer sleeve) and the adapter buckle bear the external force, meanwhile, because the outer end of the adapter is completely surrounded by the protective outer sleeve, the optical cable can be subjected to extremely small force when being bent and twisted, and the risk of the adapter buckle breakage is eliminated, the adapter buckle is effectively protected, so that the connector inner shell, the inserting core and the like are protected from external force, and the problem of stable butt joint is effectively solved; and also provides the prefabricated optical cable assembly with excellent mechanical properties.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is an exploded view of a prefabricated connector according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a prefabricated connector according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a tail shank of a prefabricated connector according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a support member of a prefabricated connector according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a protective outer shell of a prefabricated connector according to an embodiment of the present invention;

FIG. 6 is a cross-sectional view of a protective outer jacket of a pre-manufactured connector provided in accordance with an embodiment of the present invention;

FIG. 7 is a schematic view of a connector locking sleeve of a prefabricated connector according to an embodiment of the present invention;

FIG. 8 is a cross-sectional view of a connector locking sleeve of a pre-manufactured connector according to an embodiment of the present invention;

FIG. 9 is an exploded view of an adapter provided in accordance with an embodiment of the present invention;

FIG. 10 is a front view of an adapter provided by an embodiment of the present invention;

FIG. 11 is a cross-sectional view in a first orientation of an adapter provided by an embodiment of the present invention;

FIG. 12 is a second directional cross-sectional view of an adapter provided in accordance with an embodiment of the present invention;

FIG. 13 is a schematic structural diagram of an adapter body according to an embodiment of the present invention;

FIG. 14 is a cross-sectional view in a first orientation of an adapter mated with a pre-manufactured connector according to an embodiment of the present invention;

fig. 15 is a cross-sectional view in a second orientation of an adapter mated with a pre-manufactured connector according to an embodiment of the present invention.

Icon: 1-a connector inner housing; 2-inserting core; 3-a first spring; 4-tail handle; 401-tail shank flange; 402-a first keyway; 403-external shank thread; 404-a limiting surface; 5-a support body; 501-support member seal groove; 502-plane; 503-a spacing retainer ring mounting groove; 504-support internal threads; 6-support reinforcement; 7-support member sealing ring; 8-adjusting the spring; 9-protective outer sleeve; 901-connector card slot; 902-connector guide ramp; 903 — connector groove; 904-first boss; 905-a limit groove; 906-annular boss; 907-second annular step; 908 — first key block; 909-first annular step; 10-connector locking sleeve; 1001-connector clearance groove; 1002-connector lock sleeve groove; 1003-a limiting block; 1004-identification; 11-connector spring; 12-a limit check ring; 13-a bra cup; 14-heat shrinkable tubing; 15-a first connecting tab; 16-a protective tail sleeve; 17-an optical cable; 18-connector dust cap; 19-connector protective cap; 20-protective cap sealing ring; 21-an adapter body; 2101-adapter flange; 2102-adapter snap; 2103-adapter seal groove; 2104-adapter threads; 2105-ferrule assembly insertion hole; 2106-guiding limit groove; 22-a sleeve; 23-a first sealing ring; 24-adapter protective cap; 25-adapter helmet locking sleeve; 26-adapter helmet spring; 27-adapter dust cap; 28-a lock nut; 29-second connecting piece.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 8, the embodiment provides a prefabricated connector, which is suitable for being butted with an adapter, wherein a guide limit groove 2106 is formed on the adapter, and the prefabricated connector comprises:

the connector shell assembly is provided with a ferrule assembly mounting cavity at a first end and an optical cable leading-in cavity communicated with the ferrule assembly mounting cavity at a second end;

a ferrule assembly disposed in the ferrule assembly mounting chamber and adapted for optical fiber insertion connection of an optical fiber cable 17 introduced from the cable introduction chamber;

further comprising:

the connector clamping groove 901 is arranged on the outer wall of the connector shell assembly, and when the prefabricated connector and the adapter are inserted in place, the connector clamping groove 901 is suitable for being clamped with the adapter buckle 2102 on the adapter;

the connector locking sleeve 10 is axially movably sleeved on the outer wall of the first end of the connector shell assembly, and when the connector locking sleeve 10 is located at a locking position, the connector locking sleeve 10 is sleeved outside the adapter buckle 2102 clamped with the connector clamping groove 901 to prevent the adapter buckle 2102 from being separated from the connector clamping groove 901;

a connector holding structure for holding the connector lock sleeve 10 at the locking position and releasing the holding of the connector lock sleeve 10 by an external force;

a first key block 908 is arranged on the inner wall of the connector shell assembly, a first key groove 402 is arranged on the outer wall of the tail handle 4 of the ferrule assembly, the first key groove 402 is suitable for the first key block 908 to be embedded, and the first key block 908 is suitable for being embedded into a guide limit groove 2106 on the adapter when the prefabricated connector is inserted into the adapter;

when the prefabricated connector is in butt joint with the adapter, only need operating personnel will draw connector lock sleeve 10 to the unlocking position department earlier, make prefabricated connector and adapter can be smoothly to inserting target in place, at this moment, adapter buckle 2102 on the adapter falls into connector draw-in groove 901, then remove connector lock sleeve 10 to latched position, so that connector lock sleeve 10 cover is established outside adapter buckle 2102, form the restraint restriction to adapter buckle 2102, prevent adapter buckle 2102 under the external force effect, outwards expand and deviate from in connector draw-in groove 901, connector lock sleeve 10 keeps at latched position under the effect of connector retaining structure, thereby realized the auto-lock to prefabricated connector and adapter junction reliably, guarantee the reliability of connecting. The unlocked position is the position where the connector lock sleeve 10 is completely disengaged from the restraint limit for the adapter buckle in the clamped state. The first key block 908 on the connector shell assembly is matched with the first key groove 402 on the tail handle 4, so that the rotation displacement of the ferrule assembly can be prevented, internal components in the connector shell assembly, such as the ferrule assembly, can be effectively protected, the stability and the reliability of ferrule butt joint can be ensured, after the prefabricated connector is in butt joint with the adapter, the first key block 908 is embedded and matched with the guide limit groove 2106 on the adapter, the reference alignment of the ferrule 2 can be ensured when the adapter is in butt joint with the prefabricated connector, meanwhile, the whole rotation displacement of the optical cable 17 can be prevented after the butt joint, when the optical cable is subjected to external force, the connector shell assembly (particularly the protective outer sleeve 9) and the adapter buckle bear the external force, meanwhile, because the outer end of the adapter is completely surrounded by the protective outer sleeve, the adapter buckle can bear extremely small force when the optical cable is bent and twisted, and the risk of the adapter buckle breakage is eliminated, the adapter buckle is effectively protected, so that the connector inner shell 1, the inserting core 2 and the like are protected from external force, and the problem of stable butt joint is effectively solved; and also provides the prefabricated optical cable assembly with excellent mechanical properties.

As an alternative embodiment, a guiding limit block may be further disposed on the adapter, a second key groove is disposed on an inner wall of the connector housing assembly, a second key block is disposed on an outer wall of the tail handle 4 of the ferrule assembly, the second key groove is suitable for the second key block to be embedded, and the second key block is suitable for being embedded into the guiding limit block on the adapter when the prefabricated connector and the adapter are plugged into each other, which also has the same beneficial effects.

Connector retaining structure can have the multiple, for example, set up the blind hole at connector housing assembly, set up the through-hole on the connector lock sleeve 10, when connector lock sleeve 10 removes to the latched position, the through-hole aligns with the blind hole, make connector lock sleeve 10 keep at the latched position through inserting the bolt, when needing the unblock, only need pull out the bolt, operating personnel moves connector lock sleeve 10 to the unlocked position manually, pull prefabricated connector and adapter and can realize that adapter buckle 2102 deviates from connector draw-in groove 901, thereby realize the separation of prefabricated connector and adapter.

In this embodiment, it is preferable that the connector holding structure includes a connector elastic member 11, and the connector elastic member 11 is disposed between the connector lock sleeve 10 and the connector housing assembly, and its elastic force acts on the connector lock sleeve 10 to hold the connector lock sleeve 10 in the locking position.

The connector retaining structure is provided with the connector elastic piece 11, the structure is simple, after the prefabricated connector and the adapter are inserted in place and the adapter buckle 2102 on the adapter falls into the connector clamping groove 901, an operator only needs to loosen the connector locking sleeve 10, and the connector locking sleeve 10 can automatically move to a locking position under the action of the connector elastic piece 11 and is retained in the locking position under the elastic force of the connector elastic piece 11; when the prefabricated connector is required to be disconnected from the adapter, an operator only needs to overcome the elasticity of the elastic piece 11 of the connector and move the locking sleeve 10 of the connector from the locking position to the unlocking position, so that the connector locking device is more convenient to use.

As shown in fig. 5 to 8, a connector locking sleeve groove 1002 is formed on an inner wall of the connector locking sleeve 10 along the axial direction, a connector groove 903 is formed on an outer wall of the first end of the connector housing assembly along the axial direction, and the connector locking sleeve groove 1002 and the connector groove 903 cooperate to form a connector elastic member installation groove for installing the connector elastic member 11. The connector elastic member 11 is located in the connector elastic member mounting groove, when the connector locking sleeve 10 moves in a direction away from the adapter, the connector elastic member 11 can be compressed, and when an operator releases the connector locking sleeve 10, the compressed elastic force of the connector elastic member 11 is released, so that the connector locking sleeve 10 can automatically move to a locking position and is kept in the locking position. Preferably, the connector elastic member 11 is a spring, and the second end of the connector lock sleeve recess 1002 extends all the way to a port near the second end of the connector lock sleeve 10; in this embodiment, two connector elastic member mounting grooves are symmetrically provided, and two connector elastic members 11 are also symmetrically provided. Of course, three, four, etc. may be provided as desired.

A limiting groove 905 is further formed in the outer wall of the first end of the connector housing assembly, and a first boss 904 is formed between the limiting groove 905 and the connector clamping groove 901; be equipped with stopper 1003 on the inner wall of connector lock sleeve 10, stopper 1003 is suitable for the embedding in the spacing groove 905, and can follow in the spacing groove 905 the length direction of spacing groove 905 removes, the length of spacing groove 905 is followed the axial direction of connector housing assembly extends, and is not less than the distance between latched position to the unblock position. The fit between the limiting groove 905 and the limiting block 1003 can limit the moving distance of the connector lock sleeve 10 in the axial direction, and the connector lock sleeve 10 is prevented from being disengaged from the connector housing assembly.

Preferably, a first surface of the stopper 1003 facing the bottom surface of the stopper groove 905 is an inclined surface for guiding the first end of the connector housing assembly to be inserted from the second end of the connector locking sleeve 10. The setting of inclined plane on stopper 1003 can be convenient for the first end of connector housing assembly insert smoothly in connector lock sleeve 10, and stopper 1003 can be symmetrical to set up two, and the inclined plane of two stoppers 1003 forms "eight" style of calligraphy, and of course, stopper 1003 also can set up three, four and so on.

Further, a connector guide inclined plane 902 is further arranged on the outer wall of the first end of the connector housing assembly, and the connector guide inclined plane 902 is used for guiding the adapter buckle 2102 into the connector clamping groove 901, so that the butt joint of the prefabricated connector and the adapter can be ensured to be smooth;

the connector clearance groove 1001 has been seted up on the inner wall of the first end of connector lock sleeve 10, the connector clearance groove 1001 is suitable for adapter buckle 2102 inserts, and the setting of connector clearance groove 1001 can make the clearance between connector lock sleeve 10 and the connector housing subassembly as little as possible to guaranteed the stability that prefabricated connector is connected with the adapter, simultaneously, also can avoid the dust of big granule to get into the clearance between connector lock sleeve 10 and the connector housing subassembly, block connector lock sleeve 10.

The connector guide ramp 902, the connector card slot 901 and the connector groove 903 are all disposed on the protective outer cover 9.

Specifically, the connector housing assembly includes:

a first end of the first connector housing assembly is provided with the ferrule assembly mounting cavity, and the connector clamping groove 901 is formed in the outer wall of the first connector housing assembly;

a second connector housing assembly having a cable entry cavity formed therein;

the supporting piece is of a hollow structure, the first end of the supporting piece is inserted into the second end of the first connector shell assembly and connected with the ferrule assembly, the second end of the supporting piece is inserted into the second connector shell assembly, and the optical fiber is suitable for penetrating through the supporting piece and connected with the ferrule assembly.

The support member includes a support member body 5, and a support member reinforcing member 6, which are integrated by injection molding, wherein the support member body 5 is preferably a copper machined member.

The ferrule assembly comprises a connector inner shell 1, a ferrule 2, a first spring 3 and a tail handle 4, wherein a tail handle external thread 403 is arranged on the tail handle 4, a support piece internal thread 504 is arranged at a first end of a support piece body 5, the support piece body 5 is in threaded connection with the tail handle 4 of the ferrule assembly, as shown in fig. 3, a limiting surface 404 is further arranged on the tail handle 4, and the support piece body 5 abuts against the limiting surface 404 after being in threaded connection with the tail handle 4 in place.

The first connector housing assembly is a protective casing 9 shown in fig. 5 and 6, a first key block 908 is arranged on the inner wall of the protective casing 9, a tail handle flange 401 is arranged on the outer wall of the tail handle 4 of the ferrule assembly, a first key groove 402 is arranged on the tail handle flange, and the first key groove 402 is suitable for the first key block 908 to be embedded. Two first key blocks 908 and two first key grooves 402 are provided, but in other embodiments, one, three, four, etc. may be provided as needed. Through the arrangement of the first key block 908 and the first key groove 402, the tail handle 4 can be limited during assembly, and installation is facilitated.

A support sealing ring 7 is arranged between the support body 5 and the protective outer sleeve 9, preferably, the support sealing ring 7 is installed in a support sealing groove 501 on the support body 5, and a plurality of planes 502 are further arranged on the outer wall of the support body 5 along the circumferential direction.

The second end of protective outer sleeve 9 with be equipped with first connecting piece 15 between the first end of second connector housing assembly, be equipped with spacing retaining ring 12 on the support body 5, spacing retaining ring 12 with the cooperation of the second end tip of protective outer sleeve 9 is right first connecting piece 15 is spacing, and the setting of spacing retaining ring 12 is convenient for factory's construction operation, simplifies the frock and the processing degree of difficulty, improves production efficiency.

A first annular step 909 and a second annular step 907 are arranged in the inner cavity of the protective outer sleeve 9, wherein an adjusting spring 8 is arranged between the first annular step 909 and the large-diameter end of the support body 5, and after the tail handle 4 is installed, the tail handle flange 401 abuts against the second annular step 907. When the prefabricated connector is connected with the adapter, the inner insertion core of the prefabricated connector is in a floating state and is butted under the action of the spring force of the adjusting spring 8, so that the damage of hard connection to the end face of the insertion core assembly and the optical fiber is reduced, and the transmission reliability is improved. An annular boss 906 is further arranged on the outer wall of the second end of the protective outer sleeve, and the annular boss 906 is a stress surface when the connector is pulled backwards when being separated from the adapter.

Still include connector helmet 19, be equipped with connector helmet buckle on the connector helmet 19, prefabricated connector with when the connector helmet 19 targets in place to inserting, connector draw-in groove 901 be suitable for with connector helmet buckle joint, just when connector lock sleeve 10 removes to latched position, 10 covers of connector lock sleeve locate with connector draw-in groove 901 joint outside the connector helmet buckle, prevent connector helmet buckle follows deviate from in the connector draw-in groove 901. The connector protective cap 19 is provided with a connector protective cap buckle, so that the connector clamping groove 901, the connector locking sleeve 10 and the like on the connector shell assembly can be used for being connected with the connector protective cap 19 and the adapter.

As shown in fig. 14 and 15, the prefabricated connector assembly of the present invention includes the prefabricated connector as described above, and an adaptor for mating with the prefabricated connector, wherein the outer wall of the adaptor is provided with the guide limiting groove or the guide limiting block, and the adaptor is further provided with the adaptor snap 2102.

When the prefabricated connector is in butt joint with the adapter, the connector protective cap 19 on the prefabricated connector is detached, the adapter protective cap 24 on the adapter is detached, and then the butt joint of the connector and the adapter is realized.

As shown in fig. 9-13, the adapter includes:

an adapter body 21 in which a sleeve installation cavity is provided;

a sleeve 22 mounted within the sleeve mounting cavity, the sleeve 22 being adapted for insertion of a ferrule of the ferrule assembly when the adapter is mated with the pre-manufactured connector;

an adapter catch 2102 provided on the adapter body 21;

further comprising an adapter helmet 24, said adapter helmet 24 comprising:

the adapter protective cap clamping groove is formed in the outer wall of the adapter protective cap 24, and when the adapter protective cap 24 and the adapter are inserted in place oppositely, the adapter protective cap clamping groove is suitable for being clamped with the adapter buckle 2102;

the adapter protective cap locking sleeve 25 is axially movably sleeved on the outer wall of the first end of the adapter protective cap 24, and when the adapter protective cap locking sleeve 25 is located at a locking position, the adapter protective cap locking sleeve 25 is sleeved outside the adapter buckle 2102 clamped with the adapter protective cap clamping groove to prevent the adapter buckle 2102 from being separated from the adapter protective cap clamping groove;

and an adapter helmet retaining structure for retaining the adapter helmet locking sleeve 25 in the locking position and releasing the retention of the adapter helmet locking sleeve 25 by an external force.

The adapter protective cap clamping groove and the adapter protective cap locking sleeve 25 which are arranged on the adapter protective cap are consistent with the connector clamping groove and the connector locking sleeve which are arranged on the prefabricated connector, and the prefabricated connector can be referred to for specific effects and use.

The adapter helmet retaining structure includes an adapter helmet elastic member 26, the adapter helmet elastic member 26 is provided between the adapter helmet locking sleeve 25 and the adapter helmet, and its elastic force acts on the adapter helmet locking sleeve 25 to keep the adapter helmet locking sleeve 25 in the locking position.

Be equipped with adapter helmet lock sleeve recess along axial direction on the inner wall of adapter helmet lock sleeve 25, be equipped with adapter helmet recess along axial direction on the outer wall of the first end of adapter helmet, adapter helmet lock sleeve recess with adapter helmet recess cooperation forms the installation adapter helmet elastic component mounting groove of adapter helmet elastic component 26.

A fourth annular boss is arranged at a second end port of the adapter protection cap locking sleeve 25, a seventh stopping step part is arranged on the outer wall of the adapter protection cap, and the seventh stopping step part stops the adapter protection cap locking sleeve 25 from coming off from the first end of the adapter protection cap by abutting against the fourth annular boss;

and an eighth resisting step part is further arranged on the outer wall of the adapter protective cap, and the eighth resisting step part resists the adapter protective cap locking sleeve 25 to be separated from the second end of the adapter protective cap through abutting against the fourth annular boss.

An adapter protective cap guiding inclined plane is further arranged on the outer wall of the first end of the adapter protective cap and used for guiding the adapter buckle 2102 into the adapter protective cap clamping groove;

an adapter helmet clearance groove is formed in the inner wall of the first end of the adapter helmet locking sleeve 25, and the adapter helmet clearance groove is suitable for the adapter buckle 2102 to be inserted into.

As shown in fig. 13, an adapter flange 2101 is arranged on the outer wall of the middle part of the adapter body 21, two adapter buckles 2102 which are arranged oppositely are arranged on one side of the adapter flange 2101 facing the prefabricated connector, the adapter buckles 2102 are used for being connected with a connector clamping groove 901 on a protective outer sleeve 9, an adapter sealing groove 2103 is arranged at one end of the adapter body 21, which is inserted into the prefabricated connector, and a first sealing ring 23 is arranged in the adapter sealing groove 2103; the end of the adapter body 21 remote from the pre-manufactured connector is provided with adapter threads 2104 for mating with a lock nut 28 to secure the adapter to the device, and the end of the adapter body 21 facing the pre-manufactured connector is a ferrule assembly insertion hole 2105 adapted for insertion of a ferrule assembly of the pre-manufactured connector.

The adapter processing technology comprises the following steps: pressing a sleeve 22 (ceramic sleeve) into the adapter body 21, and fitting a first seal ring 23 into an adapter seal groove 2103 provided in the adapter body 21; the rear end of the adapter protective cap locking sleeve 25 is aligned to the front end of the adapter protective cap 24, the adapter protective cap elastic piece 26 is placed in an adapter protective cap elastic piece installation groove formed by the adapter protective cap locking sleeve 25 and the adapter protective cap 24, the adapter protective cap 24 is pressed into the adapter protective cap locking sleeve 25 through a tool, one end of a second connecting piece 29 is installed at the rear end of the adapter protective cap 24, the other end of the second connecting piece 29 is sleeved into the inner end of the adapter, a locking nut 28 is installed, the adapter protective cap 24 is installed at the outer end of the adapter, the inner end of the adapter is installed on an adapter dustproof cap 27, and adapter manufacturing is completed.

The connector processing technology comprises the following steps: the support sealing ring 7 is arranged in a support sealing groove 501 on the support body 5, the support body 5 and the support reinforcement 6 are integrated during injection molding, and the support body 5 is a copper workpiece.

The rear end of the connector locking sleeve 10 is opposite to the front end of the protective outer sleeve 9, the connector elastic piece 11 is placed in a connector elastic piece mounting groove formed by the connector locking sleeve 10 and the protective outer sleeve 9, and the protective outer sleeve 9 is pressed into the connector locking sleeve 10 through a tool.

The protection tail sleeve 16, the heat shrinkable tube 14, the first connecting piece 15, the cup 13, the limiting retainer ring 12, the protection outer sleeve 9, the adjusting spring 8 and the support piece body 5 penetrate into the optical cable 17, then the outer sheath of the optical cable 17 is stripped, the optical cable unit and the reinforcing piece in the optical cable 17 are left, and the tail handle 4 and the first spring 3 penetrate into the optical cable unit in the optical cable 17.

Then stripping the optical cable unit according to the process template, wherein the reserved length of the inner unit tight covering layer is 30mm, the reserved length of the aramid fiber is about 10mm, the reserved length of the optical fiber is about 15mm, and the optical fiber ensures that the ferrule assembly is in a floating state in the protective outer sleeve 9 during working through length control without causing additional loss; then injecting glue into the inserting core 2; then the optical fiber is penetrated into the inserting core 2 and then is heated and solidified; the inserting core 2 is arranged in the connector inner shell 1, and then the first spring 3 and the tail handle 4 are pushed into the connector inner shell 1; grinding, testing and other procedures are carried out to complete the manufacture of the ferrule assembly;

then the support body 5 is screwed on the tail handle 4, and the adjusting spring 8 and the protective sleeve 9 are pushed forward, and the upper trapezoidal plane of the inner connector shell 1 and the mark 1004 on the connector locking sleeve 10 are in the same direction, and the first key groove 402 on the tail handle 4 is matched with the first key block 908 on the protective sleeve 9. And then the first connecting piece 15 is moved forwards to the tail part of the protective outer sleeve 9, the limiting retainer ring 12 is moved forwards and is arranged in a limiting retainer ring mounting groove 503 arranged on the supporting piece body 5, the reinforcement (aramid fiber) in the optical cable 17 penetrates between the cup 13 and the supporting piece reinforcement 6 and is fixed by crimping tooling, the optical cable and the prefabricated connector are fixed, and the connector assembly is ensured to bear various external forces.

Moving the heat-shrinkable tube 14 to the position of the limiting retainer ring 12, and thermally shrinking the heat-shrinkable tube 14 on the optical cable 17 and the support member body 5 by using a drying gun to form sealing protection; the protective tail sleeve 16 is then pushed forward to the first connecting piece 15, one end of the first connecting piece 15 is inserted into the connector protective cap 19, and the connector protective cap 19 is provided with the protective cap sealing ring 20. The ferrule 2 is then fitted with a connector dust cap 18, and a connector protective cap 19 is fitted to the protective cover 9.

When the connector locking sleeve is used, the mark 1004 on the connector locking sleeve 10 faces upwards, the ferrule assembly is inserted by aligning with the port of the adapter, when the connector locking sleeve 10 is pushed forwards, the connector locking sleeve 10 is placed at an unlocking position (namely the rearmost end), the ferrule assembly is integrally inserted into the adapter, the adapter buckle 2102 on the adapter body 21 falls into the connector clamping groove 901 on the protective outer sleeve 9, the connector locking sleeve 10 is pushed to a locking position (namely the foremost end), the adapter buckle 2102 on the adapter body 21 falls into the connector clamping groove 901 on the protective outer sleeve 9, the adapter buckle 2102 on the adapter body 21 cannot be outwards opened due to the limitation of the connector locking sleeve 10, and under the action of the forward elasticity of the connector elastic piece 11, the connector locking sleeve 10 cannot move backwards, so that the prefabricated connector and the adapter form self-locking, and the connection reliability is ensured; when the connector needs to be disconnected, the connector locking sleeve 10 can be separated from the area of the adapter buckle 2102 only by pulling the connector locking sleeve 10 backwards, and the adapter buckle 2102 can be opened outwards under the action of external force, so that the connector can be separated from the connector clamping groove 901 of the protective outer sleeve 9, and finally the prefabricated connector and the adapter are separated.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A prefabricated connector is suitable for being butted with an adapter, wherein a guide limiting groove (2106) or a guide limiting block is arranged on the adapter, and the prefabricated connector comprises:

the connector shell assembly is provided with a ferrule assembly mounting cavity at a first end and an optical cable leading-in cavity communicated with the ferrule assembly mounting cavity at a second end;

a ferrule assembly disposed in the ferrule assembly mounting chamber and adapted for fiber insertion connection of an optical cable (17) introduced from the cable introduction chamber;

it is characterized by also comprising:

the connector clamping groove (901) is arranged on the outer wall of the connector shell assembly, and when the prefabricated connector and the adapter are inserted in place oppositely, the connector clamping groove (901) is suitable for being clamped with an adapter buckle (2102) on the adapter;

the connector locking sleeve (10) is axially movably sleeved on the outer wall of the first end of the connector shell assembly, when the connector locking sleeve (10) is located at a locking position, the connector locking sleeve (10) is sleeved outside the adapter buckle (2102) clamped with the connector clamping groove (901) to prevent the adapter buckle (2102) from being separated from the connector clamping groove (901);

a connector retaining structure for retaining the connector lock sleeve (10) in the locking position and releasing the retention of the connector lock sleeve (10) by an external force;

a first key block (908) is arranged on the inner wall of the connector shell assembly, a first key groove (402) is arranged on the outer wall of the tail handle (4) of the ferrule assembly, the first key groove (402) is suitable for the first key block (908) to be embedded, and the first key block (908) is suitable for being embedded into a guide limiting groove (2106) on the adapter when the prefabricated connector is plugged into the adapter;

or

The inner wall of the connector shell assembly is provided with a second key groove, the outer wall of the tail handle (4) of the ferrule assembly is provided with a second key block, the second key groove is suitable for being embedded into the second key block, and the second key block is suitable for being embedded into a guide limiting block on the adapter when the prefabricated connector and the adapter are oppositely inserted.

2. The prefabricated connector of claim 1, wherein said connector retaining structure comprises a connector elastic member (11), said connector elastic member (11) being disposed between said connector lock sleeve (10) and said connector housing assembly, and an elastic force thereof acting on said connector lock sleeve (10) to retain said connector lock sleeve (10) in said locked position.

3. The prefabricated connector of claim 2, wherein said connector locking sleeve (10) has a connector locking sleeve groove (1002) formed on an inner wall thereof in an axial direction, and said connector housing assembly has a connector groove (903) formed on an outer wall thereof in the axial direction, said connector locking sleeve groove (1002) and said connector groove (903) cooperating to form a connector spring mounting groove for mounting said connector spring (11).

4. The prefabricated connector of claim 1, wherein a limiting groove (905) is further formed in an outer wall of the first end of the connector housing assembly, and a first boss (904) is formed between the limiting groove (905) and the connector clamping groove (901); be equipped with stopper (1003) on the inner wall of connector lock sleeve (10), stopper (1003) are suitable for the embedding in spacing groove (905), and can follow in spacing groove (905) the length direction of spacing groove (905) removes, the length of spacing groove (905) is followed the axial direction of connector housing assembly extends, and is not less than the distance between latched position to the unblock position.

5. The prefabricated connector of claim 1, wherein a first surface of the stopper (1003) facing a bottom surface of the stopper groove (905) is an inclined surface for guiding insertion of a first end of the connector housing assembly from a second end of the connector locking sleeve (10).

6. The pre-manufactured connector of claim 1, wherein the outer wall of the first end of the connector housing assembly is further provided with a connector guide ramp (902), the connector guide ramp (902) being used to guide the adapter catch (2102) into the connector slot (901);

and/or

A connector clearance groove (1001) is formed in the inner wall of the first end of the connector locking sleeve (10), and the connector clearance groove (1001) is suitable for the adapter buckle (2102) to be inserted.

7. The prefabricated connector of any one of claims 1-6, wherein the connector housing assembly comprises:

the first end of the first connector shell assembly is provided with the ferrule assembly mounting cavity, and the connector clamping groove (901) is formed in the outer wall of the first connector shell assembly;

a second connector housing assembly having a cable entry cavity formed therein;

the supporting piece is of a hollow structure, the first end of the supporting piece is inserted into the second end of the first connector shell assembly and connected with the ferrule assembly, the second end of the supporting piece is inserted into the second connector shell assembly, and the optical fiber is suitable for penetrating through the supporting piece and connected with the ferrule assembly.

8. The pre-fabricated connector of claim 7,

and a first connecting piece (15) is arranged between the second end of the first connector shell assembly and the first end of the second connector shell assembly, a limiting check ring (12) is arranged on the supporting piece, and the limiting check ring (12) is matched with the end part of the second end of the first connector shell assembly to limit the first connecting piece (15).

9. The prefabricated connector according to any one of claims 1 to 6, further comprising a connector protective cap (19), wherein a connector protective cap buckle is arranged on the connector protective cap (19), when the prefabricated connector and the connector protective cap (19) are inserted in place, the connector clamping groove (901) is suitable for being clamped with the connector protective cap buckle, and when the connector locking sleeve (10) moves to the locking position, the connector locking sleeve (10) is sleeved outside the connector protective cap buckle clamped with the connector clamping groove (901), so that the connector protective cap buckle is prevented from being separated from the connector clamping groove (901).

10. A prefabricated connector assembly, comprising a prefabricated connector according to any one of claims 1 to 9 and an adapter for butting against the prefabricated connector, wherein the outer wall of the adapter is provided with the guide limiting groove (2106) or the guide limiting block, and the adapter is further provided with the adapter buckle (2102).

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