CN117950122A - Optical fiber quick connector - Google Patents

Abstract

The application relates to an optical fiber quick connector, which belongs to the technical field of optical fiber connectors, and comprises a connecting seat, a connecting seat and a connecting seat, wherein the connecting seat comprises a base for pre-installing pre-installed bare fibers and a pressing plate for pressing the pre-installed bare fibers and the bare fibers to be connected on the base; the protective sleeve is used for inserting the base and the pressing plate; the elastic sliding ring assembly comprises a sliding lantern ring sleeved and slidably arranged on the base to drive the pressing plate to extrude towards the direction close to the base, and an energy storage spring for driving the sliding lantern ring to rapidly slide; the tail sleeve comprises a tail clamp arranged at one end of the protective sleeve and a tail pipe sleeved on the tail clamp in a threaded manner, a locking rod limiting the sliding sleeve ring is connected to the sliding sleeve ring, the locking rod is inserted into the tail clamp, one end of the energy storage spring is abutted to the sliding sleeve ring, and the other end of the energy storage spring is abutted to the tail clamp; when the tail pipe moves towards the direction close to the protective sleeve, the tail pipe toggles the locking rod to move, so that the sliding lantern ring rapidly moves to compress the pressing plate and the base plate. The application has the effect of facilitating the installation of the bare fiber to be connected.

Description

Optical fiber quick connector

Technical Field

The application relates to the technical field of optical fiber connectors, in particular to an optical fiber quick connector.

Background

The main purpose of the optical fiber connector is to realize the connection of optical fibers, and the optical fiber connector is widely applied to optical fiber communication systems. When the optical fibers are connected, the optical fiber connector can precisely butt-joint the end faces of the transmitting optical fiber and the receiving optical fiber, so that the light energy output by the transmitting optical fiber can be coupled into the receiving optical fiber to the maximum extent.

The optical fiber quick connector belongs to a branch of an optical fiber connector, and comprises a mechanical connection mechanism, and the optical fiber is only required to be inserted into the mechanical connection mechanism when being terminated. The mechanical connection mechanism comprises a preassembled bare fiber, a ceramic ferrule, a sliding locking assembly for compacting and fixing the preassembled bare fiber and a protective sleeve for accommodating the sliding locking assembly. The sliding locking assembly comprises a substrate for pre-installing the pre-installed bare fiber, a sliding ring sleeved on the substrate and connected with the substrate in a sliding manner, and a pressing plate for pressing the optical fiber on the substrate under the driving of the sliding ring.

In the related art, a tail clamp is arranged at one end of the protective sleeve, which is far away from the ceramic ferrule, an optical cable to be connected with bare fibers passes through the tail clamp, and a conical tail pipe is sleeved on the tail clamp and is in threaded installation. After the bare fiber to be connected is in butt joint with the preassembled bare fiber, the tail pipe is rotated to move towards the direction close to the sliding locking assembly, so that the tail clamp clamps the optical cable of the bare fiber to be connected. When the tail pipe moves towards the direction close to the sliding locking assembly, the tail pipe also pushes the sliding ring to move synchronously, so that the pressing plate presses the spliced pre-installed bare fiber and the to-be-spliced bare fiber on the substrate.

For the related art, when an operator drives the sliding ring to move, the tail pipe needs to be rotated to slightly push the sliding ring to move, and the pressing plate can press the bare fiber to be connected only when the sliding ring moves to a specified position. Therefore, before the pressing plate is used for pressing the optical fiber, an operator is required to drive the bare fiber to be connected to abut against the preassembled bare fiber by hand; and one side rotates the tail pipe, so that the bare fiber to be connected is inconvenient to install.

Disclosure of Invention

In order to facilitate the installation of bare fibers to be connected, the application provides an optical fiber quick connector, which adopts the following technical scheme:

an optical fiber quick connector comprising:

The connecting seat comprises a base for pre-installing pre-installed bare fibers and a pressing plate for pressing the pre-installed bare fibers and the bare fibers to be connected on the base;

the protective sleeve is used for inserting the base and the pressing plate;

the tail sleeve comprises a tail clamp arranged at one end of the protective sleeve and a tail pipe sleeved on the tail clamp in a threaded manner and used for driving the tail clamp to clamp the optical cable;

The elastic sliding ring assembly comprises a sliding sleeve ring sleeved on the base and slidably installed on the base so as to drive the pressing plate to extrude towards the direction close to the base, and an energy storage spring for driving the sliding sleeve ring to rapidly slide, wherein the sliding sleeve ring is connected with a locking rod for limiting the sliding sleeve ring, the locking rod is inserted into the tail clamp, one end of the energy storage spring is abutted to the sliding sleeve ring, and the other end of the energy storage spring is abutted to the tail clamp;

when the tail pipe moves towards the direction close to the protective sleeve, the tail pipe drives the locking rod to move to release the limit of the locking rod on the sliding lantern ring, so that the sliding lantern ring rapidly moves to compress the pressure plate and the base plate.

In order to enable the tail pipe to contact the locking rod to lock and limit the sliding collar when rotating, the elastic sliding ring assembly further comprises a connecting rod and an unlocking rod, wherein the connecting rod is fixedly connected to one end of the sliding collar, which is close to the tail clamp, the other end of the connecting rod extends towards the direction of the tail clamp and is fixedly connected with the unlocking rod, and the locking rod is fixedly installed on the connecting rod;

And a poking rod poking the unlocking rod to release the limit of the locking rod to the sliding lantern ring is arranged on the tail pipe.

In order to enable the connecting rod to directionally slide and the locking rod to lock and limit the sliding lantern ring, the outer wall of the tail clamp is provided with a sliding groove for the connecting rod to insert and slide, one end of the unlocking rod extends away from the outer wall of the tail clamp and protrudes out of the sliding groove, and the wall of the sliding groove is provided with a locking groove for the locking rod to insert after rotating;

in order to enable the unlocking rod to be separated from the locking groove smoothly after being driven by the toggle rod, a clearance for allowing the locking rod to separate from the locking groove is reserved between the sliding groove and the groove wall on the opposite side of the locking groove and between the sliding groove and the connecting rod.

In order to enable the toggle rod to separate the locking rod from the locking groove after a large force is not applied to the unlocking rod, the sliding sleeve ring is a circular ring, a hole of the sliding sleeve ring is a circular hole, one side of the base, which is away from the pressing plate, is provided with a first arc surface attached to the inner wall of the sliding sleeve ring, and one side of the pressing plate, which is away from the base, is provided with a second arc surface attached to the inner wall of the sliding sleeve ring.

In order to enable the sliding lantern ring to move in the protection sleeve in a directional manner, a guide strip is arranged on the outer wall of the sliding lantern ring, a guide groove for the guide strip to insert and slide is formed in the inner wall of the protection sleeve, and the guide groove is communicated with the sliding groove.

In order to ensure that the sliding lantern ring can synchronously and smoothly rotate when the connecting rod rotates to the yielding gap, a rotating gap for the guide bar to rotate is arranged between the groove wall of the guide groove and the guide bar at intervals.

In order to enable the bare fibers to be connected to be in smooth butt joint with the preassembled bare fibers and compress the preassembled bare fibers by the pressing plate after butt joint, a compressing inclined surface is arranged on one side, close to the base, of the pressing plate, and the sliding lantern ring drives the pressing plate to gradually compress the optical fibers on the base when moving in the direction away from the tail clamp.

In order to enable the pre-assembled bare fiber and the bare fiber to be connected to be more stable after being pressed on a base by a pressing plate, a butt joint groove for butt joint of the pre-assembled bare fiber and the bare fiber to be connected is formed in one side, close to the pressing plate, of the base, and the butt joint groove is a U-shaped groove;

after the pre-assembled bare fiber and the to-be-connected bare fiber are inserted into the butt joint groove, one side, close to the pressing plate, of the pre-assembled bare fiber and the to-be-connected bare fiber protrudes out of the butt joint groove.

In order to prevent the optical fiber from deformation after being extruded to affect the transmission and further improve the stability of the optical fiber after being compressed, an opening groove for limiting the optical fiber after being partially clamped after being extruded is formed in the groove wall of one side of the butt joint groove, which is away from the pressing plate, and the groove width of the opening groove is smaller than the diameter of the optical fiber.

The optical fiber quick connector further comprises a coupling sleeve, wherein the coupling sleeve is sleeved on the protective sleeve;

A limiting block is arranged on one side, close to the pressing plate, of the base, and a limiting groove for the limiting block to be inserted into is formed in the pressing plate;

The tail clamp is provided with a spring ring seat for sleeving the energy storage spring, the connecting rods and the unlocking rods are both provided with two groups, the two connecting rods are circumferentially arranged at intervals on the sliding lantern ring, and the energy storage spring is positioned between the two connecting rods.

In summary, the present application includes at least one of the following beneficial technical effects:

When the pre-assembled bare fiber is in butt joint with the to-be-spliced bare fiber, the locking rod is inserted into the locking groove to limit the movement of the sliding lantern ring, the to-be-spliced bare fiber can be smoothly inserted into the butt joint groove to be in butt joint with the pre-assembled bare fiber, at the moment, the energy storage spring is compressed to generate an elastic force for the sliding lantern ring, after the pre-assembled bare fiber and the to-be-spliced bare fiber are in butt joint, the tail pipe is rotated to enable the tail pipe to move towards the direction close to the connecting seat to enable the tail clamp to clamp an optical cable of the to-be-spliced bare fiber, meanwhile, the poking rod on the tail pipe drives the connecting rod to rotate to a yielding gap to enable the locking rod to be separated from the locking groove, after the lock ejector rod is separated from the locking groove, the sliding lantern ring is rapidly moved towards the direction away from the tail clamp under the action of the energy storage spring, the pressing plate is driven to tightly press the optical fiber on the base, and after the sliding lantern ring drives the pressing plate to tightly the optical fiber, the energy storage spring continuously provides a thrust force towards the direction away from the tail clamp, and further drives the pressing plate to enable the tail clamp to be more stable towards the direction close to the direction of the connecting seat to tightly the optical fiber, and the tail clamp can continue to rotate until the optical cable is tightly pressed towards the direction close to the connecting bare fiber;

The sliding lantern ring is a circular ring, the base is provided with the first arc surface attached to the inner wall of the sliding lantern ring, and the pressing plate is provided with the second arc surface attached to the inner wall of the sliding lantern ring, so that the connecting rod is not easy to deform and bend after being driven by the toggle rod, but smoothly moves to the position of the abdicating gap so that the locking rod can be smoothly separated from the locking groove, and further the locking rod can be driven to be separated from the locking groove in a more labor-saving manner;

The butt joint groove is set to be a U-shaped groove, and one side of the optical fiber, which is close to the pressing plate, protrudes out of the butt joint groove, so that the optical fiber can have more contact area with the base, and the pressure born by the optical fiber after the pressing plate presses the optical fiber is more uniform and is not easy to generate larger deformation, so that the insertion loss and the callback loss of the optical fiber are reduced;

The open slot that the cell wall of butt joint groove side of deviating from the clamp plate was offered for the position that optic fibre was located open slot notch department is unsettled form, and clamp plate and other cell wall parts of butt joint groove form three face optic fibre extrusion this moment, and then further make the extrusion force that optic fibre received more even.

Drawings

Fig. 1 is a schematic diagram of the overall structure of an optical fiber quick connector according to an embodiment of the present application.

Fig. 2 is an exploded view of an optical fiber quick connector according to an embodiment of the present application.

Fig. 3 is an exploded view of the connection base according to the embodiment of the present application.

Fig. 4 is a cross-sectional view showing a state in which the base and the pressing plate are engaged in the embodiment of the present application.

Fig. 5 is a cross-sectional view showing a state in which the connection base and the protective sheath are engaged in the embodiment of the present application.

Fig. 6 is an exploded view of the boot in an embodiment of the application.

Fig. 7 is a cross-sectional view of a fiber optic quick connector in accordance with an embodiment of the present application.

FIG. 8 is a schematic diagram illustrating the mating of the connecting base, the tail clip and the elastic slip ring assembly according to an embodiment of the present application.

FIG. 9 is an exploded view of a connector base and resilient slip ring assembly according to an embodiment of the present application.

Figure 10 is a cross-sectional view of a slip collar mated with a protective sheath in an embodiment of the application.

Reference numerals illustrate: 1. a connecting seat; 11. a base; 111. a butt joint groove; 112. an open slot; 113. a limiting block; 114. a first arc surface; 12. a pressing plate; 121. a limit groove; 122. a second arc surface; 123. compacting the inclined plane; 13. a cartridge seat; 14. a ceramic ferrule; 15. tail intubation; 16. a floating spring; 2. a protective sleeve; 21. a limiting ring; 22. a clamping hole; 23. a guide groove; 24. a rotational gap; 3. a tail sleeve; 31. a tail clip; 311. a connecting column; 3111. the clamping bulge; 3112. fiber penetrating holes; 3113. a slip groove; 3114. a locking groove; 3115. a relief gap; 312. a threaded column; 3121. a U-shaped channel; 313. a clamping piece; 32. a tail pipe; 321. a toggle rod; 4. an elastic slip ring assembly; 41. a slip collar; 411. a guide bar; 42. an energy storage spring; 43. a locking lever; 44. a connecting rod; 45. unlocking the rod; 5. and a coupling sleeve.

Detailed Description

The application is described in further detail below with reference to fig. 1-10.

The embodiment of the application discloses an optical fiber quick connector. Referring to fig. 1 and 2, the optical fiber quick connector includes a connection base 1, a protection sleeve 2, a tail sleeve 3, an elastic slip ring assembly 4, and a coupling sleeve 5. One end of the connecting seat 1 is provided with a pre-assembled bare fiber (namely, the bare fiber which is arranged in the connecting seat 1 before the connector leaves the factory), and the to-be-connected bare fiber (namely, the part of the optical cable which is in butt joint with the pre-assembled bare fiber in the connector after the cable skin is stripped and the protective layer is stripped) is arranged on the connecting seat 1 after the to-be-connected bare fiber is in butt joint with the pre-assembled bare fiber. The protective sleeve 2 is sleeved on the connecting seat 1 to form a module, the tail sleeve 3 is arranged on one side of the protective sleeve 2 deviating from the preassembled bare fiber, the bare fiber to be connected passes through the tail sleeve 3 and is inserted into the connecting seat 1, and the tail sleeve 3 clamps the optical cable cover of the bare fiber to be connected. The elastic sliding ring component 4 is partially sleeved on the connecting seat 1 in a sliding way and is used for driving the connecting seat 1 to compress and limit the optical fiber; part of the sliding motion is matched with the tail sleeve 3 on the tail sleeve 3 to realize ejection sliding motion. The coupling sleeve 5 is sleeved on one side of the protective sleeve 2 away from the tail sleeve 3 and is used for connecting the connector with a corresponding interface.

Referring to fig. 2 and 3, the connection block 1 includes a base 11, a platen 12, a ferrule block 13, a ferrule 14, and a tail insertion tube 15. The base 11 is located between the ferrule holder 13 and the tail insertion tube 15, and the base 11, the ferrule holder 13 and the tail insertion tube 15 are integrally formed. The pressing plate 12 is covered on the base 11, and the elastic sliding ring assembly 4 is sleeved on the base 11 and the pressing plate 12 to drive the pressing plate 12 to press the bare fiber on the base 11. The preassembled bare fiber is inserted into the ceramic ferrule 14, the ceramic ferrule 14 is fixedly installed in the ferrule seat 13, and one end of the ceramic ferrule 14, which is away from the tail insertion tube 15, is in an overhanging shape. The tail cannula 15 is inserted into the tail sleeve 3 so as to facilitate the insertion and passing of the bare fibers to be spliced to the base 11 for interfacing with the preloaded bare fibers.

Referring to fig. 3 and 4, a butt-joint groove 111 is formed in a side of the base 11, which is close to the pressing plate 12, and the butt-joint groove 111 penetrates through the base 11 along the optical fiber butt-joint direction and is communicated with the ferrule seat 13 and the tail insertion tube 15, and the pre-assembled bare fiber and the bare fiber to be spliced are in butt-joint in the butt-joint groove 111. The notch on the side of the mating groove 111 near the ferrule seat 13 gradually increases along the extending direction of the mating groove 111 toward the ferrule seat 13, so that the pre-packaged bare fiber passes through the ferrule seat 13 and enters the mating groove 111. Similarly, the notch of the abutting groove 111 near the tail insertion tube 15 gradually increases along the extending direction of the abutting groove 111 toward the tail insertion tube 15, so that the bare fiber to be spliced is conveniently inserted into the abutting groove 111 after passing through the tail insertion tube 15.

The docking slot 111 is a U-shaped elongated slot, i.e., the docking slot 111 has a U-shaped cross section. After the pre-assembled bare fiber and the bare fiber to be connected are inserted into the butt joint groove 111, the outer walls of the pre-assembled bare fiber and the bare fiber to be connected, which are close to one side of the pressing plate 12, are protruded out of the butt joint groove 111, so that the pressing plate 12 is convenient to press and limit the bare fiber on the base 11.

Referring to fig. 3 and 4, an open slot 112 is formed in a slot wall of the side of the docking slot 111 facing away from the platen 12 (i.e., a slot wall at the lowest position of the arc-shaped portion of the docking slot 111). The slot width of the open slot 112 is smaller than the diameter of the bare fiber, the extending direction of the open slot 112 is identical to the extending direction of the butt slot 111, and the open slot 112 penetrates the base 11 along its extending direction. The open slot 112 is formed so that the bare fiber is suspended at the notch of the open slot 112, and the pressing plate 12 and the rest of the wall of the butt-joint slot 111 form three equal parts to extrude the bare fiber, so that the pressure applied to the bare fiber after the pressing plate 12 presses the bare fiber is more uniform and is not easy to generate larger deformation, and the insertion loss and callback loss of the optical fiber are reduced.

In order to prevent the base 11 from shaking greatly after the pressing plate 12 is covered on the base 11, a stopper 113 is integrally formed on one side of the base 11 close to the pressing plate 12. In this embodiment, two sets of limiting blocks 113 are preferably disposed on two sides of the docking slot 111 and symmetrically disposed. Each group has two limiting blocks 113, and the two limiting blocks 113 of each group are arranged at intervals along the extending direction of the butt joint groove 111. The pressing plate 12 is provided with four limiting grooves 121 for the limiting blocks 113 to be inserted into on one side attached to the base 11, and the limiting grooves 121 are also provided with four limiting grooves 121, and the four limiting grooves 121 are in one-to-one correspondence with the four limiting blocks 113. After the bare fiber is pressed on the base 11 by the pressing plate 12, a gap is still formed between the limiting block 113 and the bottom of the limiting groove 121 or the bare fiber and the limiting groove are mutually attached.

Referring to fig. 3 and 5, the limiting ring 21 is integrally formed inside the protective sleeve 2, after the connection seat 1 is inserted into the protective sleeve 2, one side of the plug seat 13 away from the base 11 will abut against the limiting ring 21 to be limited, so that the connection seat 1 is not easy to separate from the protective sleeve 2 along the direction of inserting the protective sleeve 2. Wherein the ferrule 14 will be exposed to the outside of the protective sleeve 2 through the stop collar 21. The tail sleeve 3 is mounted at one end of the protective sleeve 2, which is far away from the ceramic ferrule 14, and the tail sleeve 3 is matched with the limiting ring 21 to limit the connecting seat 1 in the protective sleeve 2.

Referring to fig. 6 and 7, the tail sleeve 3 includes a tail clip 31 and a tail tube 32, the tail clip 31 is mounted on the protective sleeve 2 in a clamping manner, and the tail tube 32 is sleeved and screwed on the tail clip 31. The tail pipe 32 is internally provided with a conical hole, and when the tail pipe 32 moves towards the direction close to the protective sleeve 2, the tail clamp 31 clamps and limits the optical cable leather to be connected with the bare fiber under the action of the conical hole.

Referring to fig. 6 and 7, the tail clip 31 includes a connecting post 311, a threaded post 312, and two clips 313. The two clamping pieces 313 are located on one side of the threaded column 312 away from the connecting column 311, and the two clamping pieces 313 are uniformly distributed on the threaded column 312 at intervals in the circumferential direction. In this embodiment, the connection post 311, the threaded post 312 and the two clips 313 are preferably integrally formed, the connection post 311 is mounted on the protection sleeve 2 in a clamping manner, and the tail pipe 32 is in threaded connection with the threaded post 312.

Referring to fig. 5 and 6, the outer wall of the connection post 311 is integrally formed with a clamping protrusion 3111, the inner wall of the protection sleeve 2 is provided with a clamping hole 22, and after one end of the connection post 311, which is away from the threaded post 312, is inserted into the protection sleeve 2, the clamping protrusion 3111 is clamped in the clamping hole 22, so that the tail clip 31 is clamped on the protection sleeve 2. In this embodiment, two clamping protrusions 3111 are formed on the connecting post 311, and two clamping holes 22 are formed on the inner wall of the protective sleeve 2, and the two clamping protrusions 3111 and the two clamping holes 22 are in one-to-one correspondence, so that the stability of clamping the tail clip 31 on the protective sleeve 2 is ensured.

Referring to fig. 6 and 7, a U-shaped channel 3121 is formed at one side of the screw post 312 where the clip 313 is disposed, and the U-shaped channel 3121 is located between the two clips 313. The U-shaped channel 3121 extends through the threaded post 312 and onto the connection post 311, but the U-shaped channel 3121 does not extend through the connection post 311. The connecting post 311 is provided with a fiber penetrating hole 3112 communicating with the U-shaped channel 3121 on a side facing away from the threaded post 312, and the tail insertion tube 15 is inserted into the fiber penetrating hole 3112. The bare fiber to be spliced passes through the U-shaped channel 3121, the fiber penetrating hole 3112 and the tail cannula 15 from between the two clamping pieces 313 and then is inserted into the butting groove 111. The optical cable sheath to be connected with the bare fiber is abutted against the opening of the U-shaped channel 3121 and is limited and is not easy to enter the U-shaped channel 3121. As the tail pipe 32 moves in a direction approaching the protective sleeve 2, the two clamping pieces 313 approach each other to clamp the cable sheath of the bare fiber to be connected under the action of the tapered hole in the tail pipe 32.

Referring to fig. 5 and 6 in conjunction with fig. 3, a floating spring 16 is sleeved on the tail insertion tube 15, an abutting ring for abutting the floating spring 16 is integrally formed on the outer wall of the tail insertion tube 15 near to the base 11, one end of the floating spring 16, which is away from the abutting ring, abuts against the connecting post 311, a floating gap is arranged between the connecting post 311 and the abutting ring, and a floating gap is also arranged between the tail insertion tube 15 and the U-shaped channel 3121. When the connector is clamped and fixed on the optical fiber box, the optical fiber box is fixed at the clamping position on the connector, so that the connector can provide a certain axial opposite insertion force after being opposite inserted with the optical fiber box through the floating spring 16, and the ceramic ferrule 14 can be in electrical signal communication with the optical fiber box.

Referring to fig. 8 and 9 in combination with fig. 7, the elastic slip ring assembly 4 includes a slip collar 41, an energy storage spring 42, a locking lever 43, a connecting lever 44, and an unlocking lever 45. The sliding collar 41 is sleeved on the base 11 and the pressing plate 12 to drive the pressing plate 12 to move and press in the direction approaching the base 11. The stored energy spring 42 drives the slip collar 41 all the way to a direction away from the tailpipe 32. The connecting rod 44 is located at one side of the slip collar 41 near the tail pipe 32, and the connecting rod 44 is integrally formed with the slip collar 41. The unlocking lever 45 is located at one end of the connecting rod 44 facing away from the sliding collar 41, and the unlocking lever 45 is integrally formed with the connecting rod 44. The locking rod 43 is integrally formed on the side wall of the connecting rod 44, the connecting rod 44 can be limited on the tail clip 31 through the locking rod 43, and the tail pipe 32 can stir the unlocking rod 45 to move through rotation, so that the limit of the locking rod 43 to the connecting rod 44 is released.

The locking rod 43, the connecting rod 44 and the unlocking rod 45 are a set of locking assemblies, and two sets of locking assemblies are preferably arranged on the sliding ring at equal intervals in the circumferential direction. A set of locking assemblies will be described below as an example.

Referring to fig. 8 and 9 in conjunction with fig. 3, the sliding collar 41 is a circular ring, and the hole of the sliding collar 41 is a circular hole, so that a first arc surface 114 attached to the inner wall of the sliding collar 41 is disposed on one side of the base 11 facing away from the pressing plate 12, and a second arc surface 122 attached to the inner wall of the sliding collar 41 is disposed on one side of the pressing plate 12 facing away from the base 11. The pressing plate 12 is provided with a pressing inclined surface 123 at one side close to the base 11, the pressing inclined surface 123 gradually inclines towards the direction close to the base 11 along the direction of inserting the bare fiber to be spliced into the butt joint groove 111, and then the pressing plate 12 is driven to press the bare fiber on the base 11 when the sliding collar 41 moves towards the direction away from the tail pipe 32.

The end of the connecting post 311 near the sliding collar 41 is integrally formed with a spring ring seat, and the tail pipe 32 is inserted into the fiber penetrating hole 3112 after passing through the spring ring seat. The energy storage spring 42 is sleeved on the spring ring seat, the energy storage spring 42 is positioned between the two connecting rods 44, and one end of the energy storage spring 42 is abutted to the connecting column 311; the other end abuts against the slip collar 41.

Referring to fig. 8 and 9, the connecting rod 44 and the unlocking rod 45 are spliced to form an L-shaped rod body, i.e., one end of the unlocking rod 45 extends away from the outer wall of the tail pipe 31 and protrudes beyond the outer wall of the tail pipe 32. The outer peripheral wall of the connection post 311 is provided with a sliding groove 3113, the sliding groove 3113 extends along the sliding direction of the connection rod 44, and the sliding groove 3113 penetrates the connection post 311. The connection rod 44 is inserted into the sliding groove 3113 and slides in the sliding groove 3113. The groove wall of the sliding groove 3113 is provided with a locking groove 3114 into which the locking lever 43 is inserted after rotation, and the movement of the sliding collar 41 is limited after the locking lever 43 is inserted into the locking groove 3114.

Referring to fig. 8 and 9 in combination with fig. 6, a toggle rod 321 is integrally formed at one end of the tail pipe 32 near the protective sleeve 2, and as the tail pipe 32 rotates, the toggle rod 321 abuts against the unlocking rod 45 and drives the unlocking rod 45 and the connecting rod 44 to rotate, so that the locking rod 43 is pulled out of the locking groove 3114, the limit of the locking rod 43 on the sliding collar 41 is released, and then the sliding collar 41 moves rapidly in a direction away from the tail pipe 32 under the action of the energy storage spring 42, so that the pressing plate 12 can press the bare fiber on the base 11. Since the unlocking rods 45 are arranged in two, the toggle rods 321 are also arranged in two, and the two toggle rods 321 are circumferentially and uniformly distributed on the tail pipe 32 at intervals.

Referring to fig. 8 and 9, further, the slot width of the sliding slot 3113 is larger than the length of the connecting rod 44 plus the locking rod 43, so that a clearance gap 3115 is provided between the slot wall of the sliding slot 3113 opposite to the slot wall where the locking slot 3114 is opened and the connecting rod 44 for releasing the locking rod 43 from the locking slot 3114.

Referring to fig. 9 and 10 in combination with fig. 8, a guide strip 411 is integrally formed on the outer wall of the sliding collar 41, the extending direction of the guide strip 411 is identical to the sliding direction of the sliding collar 41, and one side of the guide strip 411 near the connecting rod 44 extends to the position of the connecting rod 44 to be integrally formed with the connecting rod 44. Wherein, the width of the guide strip 411 is larger than the width of the connecting rod 44, the inner wall of the protective sleeve 2 is provided with a guide groove 23 for the guide strip 411 to insert and slide, and the guide groove 23 is communicated with the sliding groove 3113.

Since the connecting rod 44 will rotate into the yielding gap 3115 after the unlocking lever 45 is pulled by the pulling rod 321, the width of the guiding slot 23 is larger than the width of the guiding strip 411, so that a rotating gap 24 for the guiding strip 411 to rotate is spaced between the slot wall of the guiding slot 23 and the guiding strip 411, and the locking lever 43 can be smoothly disengaged from the locking slot 3114.

The implementation principle of the optical fiber quick connector of the embodiment of the application is as follows: when the pre-assembled bare fiber is in butt joint with the to-be-spliced bare fiber, the locking rod 43 is inserted into the locking groove 3114 to limit the movement of the sliding collar 41, the to-be-spliced bare fiber can be smoothly inserted into the butt joint groove 111 to be in butt joint with the pre-assembled bare fiber, and at the moment, the energy storage spring 42 is compressed to generate elastic force for the sliding collar 41.

After the pre-assembled bare fiber and the bare fiber to be connected are in butt joint, the tail pipe 32 is rotated to enable the tail pipe 32 to move towards the direction close to the connecting seat 1 so that the two clamping pieces 313 can clamp the optical cable of the bare fiber to be connected, meanwhile, the poking rod 321 on the tail pipe 32 can drive the connecting rod 44 to rotate to the yielding gap 3115 in the process so that the locking rod 43 is separated from the locking groove 3114, after the locking ejector rod is separated from the locking groove 3114, the sliding lantern ring 41 rapidly moves towards the direction far away from the tail pipe 32 under the action of the energy storage spring 42, the pressing plate 12 is driven to press the pre-assembled bare fiber and the bare fiber to be connected in the butt joint groove 111 on the base 11, and after the sliding lantern ring 41 drives the pressing plate 12 to press the pre-assembled bare fiber and the bare fiber to be connected on the base 11, the energy storage spring 42 continuously provides a thrust force for the sliding lantern ring 41 towards the direction far away from the tail clamp 31 so as to drive the pressing plate 12 to press the bare fiber to be more stable.

In addition, after the sliding collar 41 moves to drive the pressing plate 12 to press the optical fiber, the tail clamp 31 can continue to rotate to move towards the direction close to the connecting seat 1 until the optical cable with the bare fiber to be connected is clamped.

Because the butt joint groove 111 is the U type groove, and the tank bottom of butt joint groove 111 has seted up and has made the bare fiber lie in the one side that deviates from clamp plate 12 and be unsettled form open slot 112, consequently pre-installation bare fiber and wait to connect the bare fiber receive behind the extrusion of clamp plate 12, clamp plate 12 and the extrusion of the face optic fibre of other cell wall parts formation three intervals of butt joint groove 111 for the extrusion force that the optic fibre received is more even, and then has reduced the insertion loss and the callback loss of optic fibre.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (10)

1. An optical fiber quick connector, comprising:

the connecting seat (1) comprises a base (11) for pre-installing pre-installed bare fibers and a pressing plate (12) for pressing the pre-installed bare fibers and the bare fibers to be connected on the base (11);

a protective sleeve (2) for inserting the base (11) and the pressing plate (12);

The tail sleeve (3) comprises a tail clamp (31) arranged at one end of the protective sleeve (2) and a tail pipe (32) sleeved on the tail clamp (31) and in threaded connection with the tail clamp (31) to drive the tail clamp (31) to clamp the optical fiber;

The elastic sliding ring assembly (4) comprises a sliding sleeve ring (41) sleeved on the base (11) and slidably installed on the base (11) to drive the pressing plate (12) to extrude towards the direction close to the base (11) and an energy storage spring (42) for driving the sliding sleeve ring (41) to rapidly slide, the sliding sleeve ring (41) is connected with a locking rod (43) for limiting the sliding sleeve ring (41), the locking rod (43) is inserted into the tail clamp (31), one end of the energy storage spring (42) is abutted to the sliding sleeve ring (41), and the other end of the energy storage spring is abutted to the tail clamp (31);

When the tail pipe (32) moves towards the direction approaching the protective sleeve (2), the tail pipe (32) drives the locking rod (43) to move to release the limit of the locking rod (43) on the sliding sleeve ring (41), so that the sliding sleeve ring (41) rapidly moves to press the pressing plate (12) and the base plate.

2. An optical fiber quick connector as defined in claim 1, wherein: the elastic sliding ring assembly (4) further comprises a connecting rod (44) and an unlocking rod (45), the connecting rod (44) is fixedly connected to one end, close to the tail clamp (31), of the sliding sleeve ring (41), the other end of the connecting rod (44) extends towards the direction of the tail clamp (31) and is fixedly connected with the unlocking rod (45), and the locking rod (43) is fixedly installed on the connecting rod (44);

a poking rod (321) poking the unlocking rod (45) to release the limit of the locking rod (43) to the sliding collar (41) is arranged on the tail pipe (32).

3. An optical fiber quick connector as defined in claim 2, wherein: a sliding groove (3113) for the connecting rod (44) to insert and slide is formed in the outer wall of the tail clamp (31), one end of the unlocking rod (45) extends towards the outer wall far away from the tail clamp (31) and protrudes out of the sliding groove (3113), and a locking groove (3114) for the locking rod (43) to insert after rotating is formed in the groove wall of the sliding groove (3113);

And a clearance (3115) is arranged between the sliding groove (3113) and the connecting rod (44) and is provided with a groove wall at the opposite side of the locking groove (3114) for the locking rod (43) to be separated from the locking groove (3114).

4. A fiber optic quick connector according to claim 3, wherein: the sliding lantern ring (41) is a circular ring, the hole of the sliding lantern ring (41) is a circular hole, one side of the base (11) deviating from the pressing plate (12) is provided with a first arc surface (114) attached to the inner wall of the sliding lantern ring (41), and one side of the pressing plate (12) deviating from the base (11) is provided with a second arc surface (122) attached to the inner wall of the sliding lantern ring (41).

5. A fiber optic quick connector according to claim 3, wherein: the sliding sleeve is characterized in that a guide strip (411) is arranged on the outer wall of the sliding sleeve ring (41), a guide groove (23) for the guide strip (411) to insert and slide is formed in the inner wall of the protective sleeve (2), and the guide groove (23) is communicated with the sliding groove (3113).

6. An optical fiber quick connector as defined in claim 5, wherein: a rotating gap (24) for rotating the guide strip (411) is arranged between the groove wall of the guide groove (23) and the guide strip (411).

7. An optical fiber quick connector as defined in claim 1, wherein: one side of the pressing plate (12) close to the base (11) is provided with a pressing inclined surface (123), and the sliding lantern ring (41) drives the pressing plate (12) to gradually press the optical fiber on the base (11) when moving in the direction away from the tail clamp (31).

8. An optical fiber quick connector as defined in claim 1, wherein: a butt joint groove (111) for butt joint of the pre-installed bare fiber and the bare fiber to be spliced is formed in one side, close to the pressing plate (12), of the base (11), and the butt joint groove (111) is a U-shaped groove;

after the pre-assembled bare fiber and the to-be-connected bare fiber are inserted into the butt joint groove (111), one side, close to the pressing plate (12), of the pre-assembled bare fiber and the to-be-connected bare fiber protrudes out of the butt joint groove (111).

9. An optical fiber quick connector as defined in claim 8, wherein: the groove wall of the butt joint groove (111) on one side deviating from the pressing plate (12) is provided with an opening groove (112) for limiting the clamping of the extruded optical fiber, and the groove width of the opening groove (112) is smaller than the diameter of the optical fiber.

10. An optical fiber quick connector as defined in claim 2, wherein: the device also comprises a coupling sleeve (5), wherein the coupling sleeve (5) is sleeved on the protective sleeve (2);

a limiting block (113) is arranged on one side, close to the pressing plate (12), of the base (11), and a limiting groove (121) for the limiting block (113) to be inserted into is formed in the pressing plate (12);

The tail clamp (31) is provided with a spring ring seat for sleeving the energy storage spring (42), the connecting rods (44) and the unlocking rods (45) are both provided with two groups, the two connecting rods (44) are circumferentially arranged at intervals on the sliding lantern ring (41), and the energy storage spring (42) is positioned between the two connecting rods (44).