WO2013135161A1

WO2013135161A1 - Tympanum-type optical fiber cold splice that can be repeatedly opened and used

Info

Publication number: WO2013135161A1
Application number: PCT/CN2013/072443
Authority: WO
Inventors: 李响
Original assignee: 南京云控通信科技有限公司
Priority date: 2012-03-12
Filing date: 2013-03-12
Publication date: 2013-09-19
Also published as: CN102608716A; CN102608716B

Abstract

A tympanum-type optical fiber cold splice that can be repeatedly opened and used, comprising a V-shaped piece (2), a box lid (3), an opening lid (9), a box (1), wire guiding pieces (6) disposed on two ends of the box (1), a tail handle (7), and a pushing pipe (8). A tympanum chamber (1-1) is disposed on the box body of the box (1). Disposed on the side of the tympanum chamber (1-1) is a tympanum (1-2) that, when under pressure, compacts the cross-section of the tympanum chamber (1-1). The V-shaped piece (2) is disposed within the tympanum chamber (1-1). The box lid (3) is disposed outside of the tympanum (1-2) and operates on the tympanum (1-2) by means of a fastening element. Disposed on either end of the box (1) is a matching liquid chamber (1-10) and a connection chamber (1-7). The connection chamber (1-7) is connected to the tail handle (7). Disposed on the tail handle (7) are at least a pair of arc-shaped cutting tables (7-6) and at least a pair of pressing tongs (7-5). The arc-shaped cutting tables (7-6) and the pressing tongs (7-5) are disposed at the same angle in the direction of the axis of the tail handle. The radius of the arc-shaped cutting table (7-6) increases from one side to the other side of the circumference direction of the tail handle. Disposed inside of the pushing pipe (8) is an arc-shaped cutting groove (8-2) that matches the arc-shaped cutting table (7-6) disposed on the tail handle (7). The optical fiber cold splice evenly distributes the fastening force on connected optical fibers, and does not cause twisting or dislocation of optical fiber connections; additionally, the use of a seal structure at a connection point ensures the cleanness of the connection point.

Description

A tympanic membrane re-openable fiber optic cold connector

Technical field

The invention relates to a connecting device for fiber optic docking installation, in particular to a fiber optic cold junction continuation, sealing a V-shaped groove in a tympanic membrane cavity, driving the tympanic membrane by a spring clip holding method to compact the optical fiber, and repeatedly opening use.

Background technique

At present, the optical fiber cold junction products for re-opening are mainly used to fix the optical fiber in three ways and fix the outer skin in two ways.

Fixing of the optical fiber: the first one is to align the two fiber ends by pressing the folded metal piece to realize the fiber butting end; the second is to fix the fiber by pressing the opposite plastic block to realize the fiber butting end; The three are to press the V-block by the box-type gland to press the V-block to fix the fiber to realize the fiber butt-to-end. Wherein, a V-shaped groove for fiber optic docking is disposed in the V-shaped block opposite to the folded metal piece, the opposite plastic block or the floating block; and the liquid substance is dropped at the fiber end connection position of the V-shaped groove to improve the connection point Light transmittance; the action of the pressing device is to reduce the gap of the V-groove by pressing the folded metal piece or the folded plastic piece or the rolling floating block to press the aligned fiber to realize the butt end of the two fibers. .

In the fixing of the optical fiber, in the fixing method of the first optical fiber, when the metal piece is pressed in the fixing mechanism, the returning groove must be arranged on the opposite side of the V-shaped groove to prevent the optical fiber from being detached, and the optical fiber gap is controlled by the folded metal piece. The space in the cavity guarantees the opening degree, that is, the V-groove gap (penetration gap), which brings great manufacturing difficulty and low yield; in the second fiber fixing mode, the plastic V-shaped block alignment mechanism is locked. When the fiber is tight, the optical fiber that is pressed and pressed in the V-shaped groove by the gland is affected by the gap drift of the gland by the rotation pressing method. The direction of the fiber is often not perpendicular to the V-groove, and the accuracy of the alignment accuracy of the fiber is incorrect. The fiber-optic connection loss of the two-connected fiber is increased; when the fiber-optic channel of the plastic V-block alignment mechanism is used repeatedly, the special key is used to open the pressure block, and the opening requirement of the top opening requires strict precision requirements, and the product is manufactured in batches. It is difficult, the yield is low, and the plastic debris generated by the friction during the opening process pollutes the connection point. When repeated use, it affects the light passing, which causes the quality of the connection to decrease. Some plastic V-block alignment mechanisms are in the initial state. In the free state, the fiber needs to open the V-shaped block channel when it penetrates, and there is matching liquid adsorption inside, which causes the fiber penetration resistance to increase when the fiber penetrates into the top open V-groove, and the probability of false docking increases in the project, and the sharpness is sharp. The fiber-cut end face is easy to scratch the V-shaped block, causing debris to contaminate the connection point, causing the connection failure; in the third fiber fixing mode, since the floating block is a sill-type design, the floating block is plasticized when it is pressed by the cover. The effect of deformation is to sway downward while rotating the fiber, so that the fiber in the V-groove is turbulent, and the direction of the fiber is not perpendicular to the V-groove, and the alignment accuracy of the splicing fiber is deteriorated, and the connection loss is increased. Since the alignment accuracy is affected by the material and the interference accuracy, the dispersion accuracy is large, resulting in poor repeatability of the fiber connection.

The common disadvantage of the first two types of fiber fixing methods is that the V-shaped groove portion cannot be sealed, and no matching night storage chamber is provided, so that the matching liquid for the connection in the V-shaped groove is easily contaminated and lost, directly affecting the connection life, and the third Although it can have a certain sealing effect in the working state, it cannot be sealed before use, and the gland which is opened when it is repeatedly used is easy to slip, and is easily contaminated by the environment during repeated use.

Fixation of the outer skin: The first type is to set the circular arc groove in the V-shaped groove and the end of the gland respectively. When working, the optical fiber in the V-shaped groove is compacted while reducing the space of the circular arc groove, and the optical fiber sheath is assisted. The second is to push the push tube to press down the suspension block, and press the fiber sheath through the suspension block to fasten it.

In the fixing of the outer skin, the first way is that the deformation of the outer skin of the optical fiber does not reach the locking amount, so the fastening force is insufficient; the second method of the downward pressing stroke of the suspension block is affected by the introduction resistance of the push tube, and the setting is too high, pushing The pushing force is too large, and the setting is low and the fastening purpose is not achieved.

technical problem

The technical problem to be solved by the present invention is to provide a fiber-optic cold connector for repetitive opening and use of the tympanic membrane, which realizes the sealing and anti-pollution of the optical fiber connection point, and is not subject to environmental cleanliness when connected and repeatedly opened. The effect is cold and reliable, and the service life is long; the fiber fixing method adopts the tympanic membrane compression method to ensure that the pressure of the optical fiber is always perpendicular to the V-shaped groove, the alignment precision is high, and the connection loss is small; the repeated use of the opening gap is easy to control. It simplifies the complexity of fiber-optic construction and improves the success rate of fiber-optic cold connection. The fiber-optic sheath is fixed in a step-by-step fastening mode with large fastening force and simple and reliable operation.

Technical solution

In order to solve the above technical problem, the technical solution of the present invention is: a fiber-optic cold connector for repetitive opening and use of a tympanic membrane, comprising a V-shaped block, a cover, an opening cover, a box body, a wire block disposed at both ends of the box body, The shank and the push tube are characterized in that: the box body comprises a box body, and a tympanic membrane chamber is arranged on the box body, and two ends of the tympanic membrane chamber are respectively communicated with the guiding block, and are arranged on a side of the tympanic membrane chamber a tympanic membrane compressed to reduce the cross-sectional area of the tympanic membrane cavity, the tympanic membrane is connected to the body of the casing through a floating rib, the V-shaped block is disposed in the tympanic membrane cavity, and the cover is disposed in the The outer side of the tympanic membrane acts on the tympanic membrane through a locking member; a matching liquid chamber and a connecting chamber are respectively arranged at two ends of the box body, and the connecting chamber is connected with the shank, and the front end of the shank is arranged to accommodate a cavity in which the wire block is mounted, and at least one pair of arc cutting tables and at least one pair of pressure tongs are disposed on the shank, the arc cutting table and the pressure tongs are at the same angle in the axial direction of the shank Set, the arc cutting table is at the tail handle circle Direction side to the other side of the radius is incremented; the caudal peduncle provided with arcuate cuts a mating arcuate slot in the push tube; opening the lid attached to the casing below.

The locking member is a spring clip or a sleeve.

The lower part of the tympanic membrane is provided with a boss and a groove, and cooperates with the rotary groove and the turntable provided on the cover; the upper part of the tympanic membrane of the box body is provided with a guide inclined surface and a chamfered surface provided on the upper part of the cover; The connecting cavity at the two ends of the box is tangentially inserted into the pin hole, and is matched with the shank pin slot, and the pin penetrates into the pin hole and is inserted into the shank pin slot; the guiding body surface of the box connecting chamber is provided with a fiber guiding surface.

The shank is further provided with a track groove for controlling the position of the rotation angle, and cooperates with the track shaft at the front end of the push tube, and the front part of the shank is further provided with a accommodating cavity, and the wire block is placed in the accommodating cavity, and the front shank of the shank Set the guide cone ring in the middle.

The push tube front end is provided with an introduction tapered surface.

The taper surface and the fibril hole are set in the wire block, and the position table and the positioning groove are respectively set on both sides of the wire block, and are mutually positioned and loaded into the receiving cavity of the tail handle.

The inner surface of the opening cover is provided with a guiding inclined surface corresponding to the box body and a chamfering surface of the box cover.

When the prepared optical fiber penetrates into one end of the cold joint, the optical cable sheath is pushed tightly on the cold joint positioning cone surface, and then the push tube is pushed forward to the fixed surface, and the pressure clamp on the tail handle is Pressing into the outer skin of the cable, initially fixing the outer skin of the optical fiber, and then rotating the push tube 90 degrees clockwise, and rotating the circular arc in the push tube to continue to drive the pressure clamp down, further tightening the outer skin of the fiber, at this time, the tail handle The upper circular cutting block blocks the push tube, so that it is not easy to fall off; when the other optical fiber is also operated, the opening cover is removed, and the cover is held by the spring clip, and the tympanic membrane is driven to press the connecting fiber in the V-shaped groove. Complete the connection.

The tympanic membrane in the box body is connected with the box body through the floating rib, and the lower part of the tympanic membrane of the box body is provided with a boss and a groove, and cooperates with the rotating groove and the turntable provided on the box cover, and the box cover is opened through the boss The rotation of the rotating groove is realized by the rotation of the groove and the rotation of the turntable; the upper part of the tympanic membrane of the box body is provided with a guiding inclined surface to cooperate with the chamfering surface provided on the upper part of the box cover; The top plate of the cover is pushed open by the guiding slope and chamfering to restore the tympanic membrane to the open state; during operation, the opening cover is pulled out, and the cover is held by the spring clip, and the tympanic membrane is driven to press the connecting fiber in the V-shaped groove; The connecting cavity at the two ends of the box body is tangentially inserted into the pin hole, and is matched with the tail shank pin slot, and the pin penetrates into the pin hole and is inserted into the shank pin slot; the guiding body surface of the box connecting cavity is provided.

The shank is further provided with a track groove for controlling the position of the rotation angle, and cooperates with the track shaft at the front end of the push tube to position the start and end positions of the 90 degree rotation of the push tube; the front portion of the shank is also provided with a receiving cavity. The wire block is placed in the accommodating cavity, and a pair of pressure tongs are symmetrically arranged in the middle of the shank, the pressure tongs and the tail shank are connected by the floating ribs, and the shank is provided with two arc cutting tables at the same angle direction of the pressure tongs, and the guiding is arranged in the front hole Cone ring.

The push tube front end is provided with an introduction tapered surface, and the push tube is provided with an arc cut groove matched with the circular cut table on the tail handle.

A retaining platform is also arranged behind the cover.

A guide surface is disposed at both ends of the V-shaped groove of the V-shaped block.

The inner surface of the opening cover is provided with a top plate corresponding to the guiding inclined surface of the box body and the chamfering surface of the box cover, the thickness of the top board ensures that the pressing is the box cover completely disengages the tympanic membrane, and the opening cover is provided with the side plates and the box Body fit.

The optical fiber cold connector of the present invention, The fiber through hole is formed between the V-shaped groove and the eardrum, and the center line of the fiber hole on the wire block is on the same axis.

Beneficial effect

Compared with the prior art, the present invention has the following advantages:

In the alignment fixing mechanism of the optical fiber cold connector of the present invention, the pressing of the two butt fibers is to hold the case and the cover together by a locking member such as a spring clip, and drive the tympanic membrane to reduce the gap between the V-shaped groove and the tympanic membrane. The space is used to compress the fiber in the V-shaped groove to achieve compaction. The V-shaped cavity of the connecting fiber is sealed in the open state or the working compression state, regardless of the construction or working environment during the fiber connection. How bad is, it can ensure the cleanliness of the connection point, free from pollution and erosion, and will not pollute the connection point when the re-opening of the gland is repeated, which greatly improves the success rate of the fiber connection and improves the number of times. The stability of repeated use also prolongs the service life. At present, no product has been designed with this sealing method.

In the alignment fixing mechanism of the optical fiber cold connector of the invention, the spring body is used to hold the box body and the box cover together, and the pressing force of the connecting fiber in the V-shaped groove is transmitted through the eardrum, and the circumference of the eardrum is The floating rib is connected to the body of the box, so that the deformation of the tympanic membrane is always perpendicular to the V-shaped groove after being pressed, and the cylindrical optical fiber is uniformly pressed in three aliquot directions in the V-shaped groove without being opposite to the V-shaped groove. The cage is set back to prevent the fiber from being pressed off, and the existing pressure-receiving method always overcomes the influence of the torque generated by the fiber, thereby improving the centering accuracy.

The optical fiber cold connector of the invention has a stable fastening force, and the connecting fiber in the V-shaped groove does not cause eccentricity and misalignment due to the turbulence, and the deformation during pressing is uniform, thereby ensuring that the two butt fibers obtain the same pressing force, thereby realizing Reliable docking.

The optical fiber cold connector of the invention is only used to cancel the pressing force applied to the eardrum due to the top opening of the cover, and only needs to be squeezed out to restore the tympanic membrane to a free state, and the opening requirement is not too much precision. The requirement greatly reduces the manufacturing difficulty and improves the success rate of the operation.

The optical fiber cold connector of the invention adopts a floating tympanic membrane. When the tympanic membrane is in a non-operating state (that is, when the fiber is inserted), the tympanic membrane is in a freely open state, and an open fiber channel is formed between the V-shaped groove, and the fiber does not need to be inserted into the V-shaped groove. The topping of the pressure block is such that the difficulty of threading is greatly reduced, and the damage of the V-shaped groove when the sharp fiber cutting surface is worn is reduced, the fiber penetration pollution is reduced, and the success rate of the connection is improved.

The optical fiber cold joint skin fastening of the invention adopts a step-by-step fastening mode, and the fiber sheath is initially fixed by pushing the pressure clamp on the tail handle into the outer skin of the fiber by pushing the push tube, and then rotating the tube 90 degrees clockwise, with The arc grooving in the push tube is rotated to continue to drive the pressure clamp down, further tightening the outer skin of the fiber, and the circular cutting table on the tail handle blocks the push tube, so that it is not easy to fall off; The fastening force is large, the push tube is not easy to be detached due to vibration, and the structure is compact, and it is easy to realize miniaturization, and has great practical value in the case where the space in the welding plate is limited.

In the process of fastening the fiber cold junction skin of the invention, since the direction of the push tube is opposite to the insertion direction of the fiber when the fiber sheath is initially fixed, the fiber always has a forward pushing force when the outer skin is fixed, thereby greatly improving the fiber connection. Success rate.

The two ends of the optical fiber cold junction box of the invention are respectively provided with matching liquid chambers, and when used repeatedly, there is sufficient matching liquid to ensure the connection quality to prevent the loss of the matching liquid; at the same time, the redundant matching liquid at the fiber entrance and exit can be closed and connected. The point and the external environment improve the anti-fouling ability of the matching point matching liquid and improve the service life.

The optical fiber cold junction continuation of the invention uses large and small positioning taper holes to locate the initial fiber insertion position, and is suitable for optical fibers of different outer diameter diameters.

The tympanic membrane of the invention has a thin thickness and is a primary color plastic material. Compared with the opaque folded metal or the thick plastic gland, the light transmission performance is better, and the infrared light is introduced into the optical fiber through the casing after the connection is completed. Open the slot to observe the connection quality of the connection point, free from ambient light interference.

DRAWINGS

1 is a cross-sectional view of a fiber optic cold connector 3D of the present invention.

2 is a 3D development view of the optical fiber cold connector of the present invention.

3 is a schematic view of a box 3D of the present invention, wherein a is a 3D external view and b is a 3D cross-sectional view.

Figure 4 is a schematic view of the lid 3D of the present invention.

Figure 5 is a schematic view of a V-block 3D of the present invention.

Figure 6 is a schematic view of a wire block 3D of the present invention.

Figure 7 is a schematic view of the tail shank 3D of the present invention, wherein a is a 3D appearance view, b is a 3D cross-sectional view, and c is a tail shank tailed front view.

Figure 8 is a schematic view of the push tube 3D of the present invention, wherein a is a 3D appearance view and b is a forward front view of the push tube. .

Figure 9 is a schematic view of the opening cover 3D of the present invention.

10 is a 3D cross-sectional view showing the initial state and the active state of the optical fiber cold junction fiber of the present invention, wherein a is an initial state 3D cross-sectional view, and b is an operational state 3D cross-sectional view.

In the figure: 1. Box, 2.V block, 3. Box cover, 4. Spring clip, 5. Pin, 6. Wire block, 7. Tail handle, 8. Push tube, 9. Open cover, 1- 1. Tympanic membrane cavity, 1-2. Tympanic membrane, 1-3. Floating ribs, 1-4. Boss, 1-5. Groove, 1-6. Guide bevel, 1-7. Connection cavity, 1-8. Pin hole, 1-9. Guide surface, 1-10. Matching the liquid chamber, 2-1. V-groove, 2-2. Guide surface, 2-3. Fiber through hole, 3-1. Chamfered surface, 3-2. Slot, 3-3. Turntable, 3-4. Anti-off platform, 6- 1. Positioning the taper surface, 6-2. Passing the fiber hole, 6-3. Positioning table, 6-4. Positioning groove, 7-1. Tail handle body, 7-2. Tail pin slot, 7-3. Accommodating cavity, 7-4. Guide cone ring, 7-5. Pressure clamp, 7 -6. Arc cutting table, 7-7. Fixed surface, 7-8. Track, 7-9. Floating rib, 8-1. Introducing cone surface, 8-2. Arc grooving, 8-3. Track Shaft, 9-1. Top plate, 9-2. Side plate.

Embodiments of the invention

The invention will be described in detail below with reference to the accompanying drawings.

As shown in Figures 1, 2, 3, 4, 7, 8, 9, and 10,

The utility model comprises a box body 1, a V-shaped block 2, a box cover 3, a spring clip 4, a bolt 5, a wire block 6, a tail handle 7, a push tube 8 and an opening cover 9. The casing 1 is provided with a tympanic cavity 1- 1. The tympanic membrane 1-1 is provided with a tympanic membrane 1-2 in the middle, and the tympanic membrane 1-2 is surrounded by a floating rib 1-3; the V-shaped block 2 is sealed in the tympanic cavity 1-1 of the casing 1, and the V-shaped block 2 is A fiber through hole 2-3 is formed between the V-shaped groove 2-1 and the eardrum 1-2 disposed on the opposite surface of the eardrum 1-2; the cover 3 is attached to the case 1, and the spring clip 4 is used to cover the case 1 and the case The cover 3 is held together and drives the eardrum 1-2 to press the optical fiber in the V-groove 2-1 by reducing the space between the V-groove 2-1 and the eardrum 1-2; in the case 1 A matching liquid chamber 1-10 and a connecting chamber 1-7 are disposed at both ends, and the connecting chamber 1-7 is connected with the tail shank 7 through the bolt 5, and the front end of the shank 7 is provided with a receiving chamber 7-3, and the receiving chamber 7- 3 is equipped with a pair of wire blocks 6 , a pair of pressure clamps 7-5 are symmetrically arranged in the middle of the tail handle 7 , and the tail handle 7 is provided with two arc cutting tables 7-6 at the same angle direction of the pressure clamp 7-5. The tube 8 is provided with an arc slit 8-2 matched with the arc cutting table 7-6, and the push tube 8 is sleeved on the arc cutting table at the end of the tail shank 7 7-6; the opening cover 9 is attached to Case 1 below.

As shown in Figures 3 and 4, The tympanic membrane 1-2 in the casing 1 is connected to the casing 1 through the floating ribs 1-3, and the lower portion of the tympanic membrane 1-2 of the casing 1 is provided with a boss 1-4 and a groove 1-5, and The rotary groove 3-2 provided on the cover 3 cooperates with the rotary table 3-3, and the opening of the cover 3 is realized by the cooperative rotation of the boss 1-4 and the rotary groove 3-2, and the cover 3 is closed by the concave The rotation of the groove 1-5 and the turntable 3-3 is realized; the upper portion of the tympanic membrane 1-2 of the casing 1 is provided with a guiding slope 1-6 to cooperate with the chamfered surface 3-1 provided on the upper portion of the box cover 3; The top plate 9-1 on the opening cover 9 is pushed open by the guiding slope 1-6 and the chamfering surface 3-1 to return the eardrum 1-2 to the open state; during operation, the opening cover 9 is pulled out through the spring clip 4 clasping the cover 3, driving the tympanic membrane 1-2 to press the connecting optical fiber in the V-shaped groove 2-1; the connecting cavity 1-7 at both ends of the casing 1 is tangentially inserted into the pin hole 1-8, and the tail shank pin The slots 7-2 are matched, and the pins 5 are inserted into the pin holes 1-8 and snapped into the tail shank pin slots 7-2; the guide body connecting chambers 1-7 are provided with guide faces 1-9.

As shown in Figures 7 and 8, the tail shank 7 is further provided with a track 7-8 for controlling the position of the rotation angle, which cooperates with the track shaft 8-3 at the front end of the push tube 8 to position the start of the 90 degree rotation of the push tube. End position; the front end of the shank 7 is further provided with a receiving cavity 7-3, the wire block 6 is placed in the accommodating cavity 7-3, and a pair of pressure tongs 7-5 are symmetrically arranged in the middle of the shank 7, the pressure tongs 7-5 The shank 7 is connected to the shank 7 through the floating ribs 7-9. The shank 7 is provided with two circular cutting tables 7-6 in the same angular direction of the pressing tongs 7-5, and a guiding cone ring 7-4 is arranged in the front hole.

As shown in Fig. 8, the front end of the push tube 8 is provided with a lead-cone surface 8-1, and an arc-shaped slit 8-2 is provided in the push tube 8 to match the arc-cut table 7-6 on the tail shank 7.

As shown in FIG. 4, a retaining platform 3-4 is further disposed behind the cover 3 of the cover.

As shown in FIG. 5, the V-shaped groove 2-1 of the V-shaped block 2 is provided with guide faces 2-2 at both ends thereof.

As shown in FIG. 6, the wire block 6 is provided with a taper surface 6-1 and a fiber via hole 6-2, and the two sides of the wire block 6 are respectively provided with a position table 6-3 and a positioning groove 6-4, which are mutually The positioning is carried in the accommodating chamber 7-3 of the shank 7.

As shown in FIG. 9, the inner surface of the opening cover 9 is provided with a top plate 9-1 corresponding to the guiding inclined surface 1-6 of the casing 1 and the chamfered surface 3-1 of the cover 3, and the thickness of the top plate 9-1 is ensured. The press-in is that the cover 3 completely disengages the tympanic membrane 1-2, and the open cover 9 is provided with the side plates 9-1 and the case 1 are engaged.

As shown in Figures 1, 2, and 10, the optical fiber cold connector of the present invention, The fiber-optic through-hole 2-3 is formed between the V-groove 2-1 and the eardrum 1-2, and the center line of the fiber-optic hole 6-2 on the wire block 6 is on the same axis.

The field use of the optical fiber cold connector of the present invention comprises the following steps:

The prepared optical fiber is inserted into the optical fiber cold connector, and the optical fiber sheath is in close contact with the positioning tapered surface 6-1 of the wire block 6 or the guiding tapered surface 7-4 of the tail shank 7 (determined according to the diameter of the outer diameter of the optical fiber sheath) At the same time, the push tube 8 is pushed forward to the fixed surface 7-7, at which time the pressure clamp 7-5 on the tail handle 7 is pressed into the cable sheath to initially fix the fiber sheath;

Rotate the push tube clockwise from 8 to 90 degrees, and follow the circular arc slot 8-2 in the push tube 8 to continue to drive the pressure clamp 7-5 down to further tighten the fiber sheath. At this time, the tail handle 7 The upper arc cutting table 7-6 blocks the push tube 8 so that it is not easy to fall off;

The other fiber is also inserted into the cold joint. When the end faces of the fiber are butted, the same operation is performed in the above two steps;

The opening cover 9 is removed, and the cover 3 is held by the spring clip 4, and the tympanic membrane 1-2 is driven to press the connecting optical fiber in the V-shaped groove 2-1 to complete the connection.

The field opening of the optical fiber cold connector of the present invention comprises the following steps:

Pressing the opening cover 9 from the lower part of the box body 1 and pushing the box cover 3;

Push the tube 8 to 90 degrees counterclockwise and pull it out:

Remove the fiber and finish it.

Claims

A tympanic membrane fiber optic cold connector for reopening, comprising a V-shaped block (2), a cover (3), an opening cover (9), a box body (1), and wires disposed at both ends of the box body (1) The block (6), the stalk (7) and the push tube (8) are characterized in that: the box body (1) comprises a box body, and a tympanic cavity (1-1) is provided on the box body, the tympanic membrane Both ends of the cavity (1-1) are respectively communicated with the guiding block (6), and a tympanic membrane which is compressed to have a small cross-sectional area of the tympanic membrane cavity (1-1) is disposed on the side of the tympanic cavity (1-1) ( 1-2), the circumference of the tympanic membrane (1-2) is connected to the housing body via a floating rib (1-3), and the V-shaped block (2) is disposed in the tympanic cavity (1-1) The cover (3) is disposed outside the tympanic membrane (1-2) and acts on the tympanic membrane (2-2) through a locking member; in the housing (1) Each end is provided with a matching liquid chamber (1-10) and a connecting chamber (1-7), the connecting chamber (1-7) is connected with the tail handle (7), and the front end of the tail handle (7) is provided with a receiving chamber (7). -3), the wire block is accommodated in the accommodating cavity (7-3) 6), at least one pair of arc cutting tables (7-6) and at least one pair of pressing tongs (7-5) are provided on the tail shank (7), the arc cutting table (7-6) and pressing The tongs (7-5) are arranged at the same angle in the direction of the axis of the shank, and the radius of the arc cutting table (7-6) in one side to the other side in the circumferential direction of the shank is increased; in the push tube (8) An arc slit (8-2) matching the arc cutting table (7-6) on the tail shank (7) is disposed inside; the opening cover (9) is attached below the casing (1).
The tympanic membrane reopenable optical fiber cold connector according to claim 1, wherein the locking member is a spring clip (4) or a sleeve.
The tympanic membrane reopenable optical fiber cold connector according to claim 1 or 2, wherein the lower portion of the tympanic membrane (1-2) is provided with a boss (1-4) and a groove ( 1-5), matching with the rotary groove (3-2) and the turntable (3-3) provided on the cover (3); the upper portion of the tympanic membrane (1-2) of the case (1) is provided with a guide inclined surface (1-6) Cooperating with the chamfered surface (3-1) provided on the upper part of the cover (3); the connecting cavity (1-7) at both ends of the case (1) is tangent to the pin hole (1-8) Matching with the shank pin slot (7-2), the pin (5) penetrates into the pin hole (1-8) and snaps into the stalk pin slot (7-2); the case connection cavity (1- 7) Set the fiber guide surface (1-9).
The tympanic membrane reopenable optical fiber cold connector according to claim 3, characterized in that: the shank (7) is further provided with a track groove (7-8) for controlling the rotational angular position, and the push tube (8) The front axle shaft (8-3) is engaged, the front handle (7) is further provided with a receiving cavity (7-3), and the wire block (6) is placed in the receiving cavity (7-3). A guide cone ring (7-4) is provided in the front hole of the shank (7).
The tympanic membrane reopenable optical fiber cold connector according to claim 3, characterized in that the front end of the push tube (8) is provided with an introduction tapered surface (8-1).
The tympanic membrane reopenable optical fiber cold connector according to claim 3, wherein the wire block (6) is provided with a taper surface (6-1) and a fiber via hole (6-2). The two positions (6-3) and the positioning groove (6-4) are respectively disposed on both sides of the wire block (6), and are respectively positioned and loaded into the receiving cavity (7-3) of the tail handle (7).
The tympanic membrane reopenable optical fiber cold connector according to claim 3, wherein the inner surface of the opening cover (9) is provided with a guiding slope (1-6) corresponding to the casing (1). And the cover (3) chamfered surface (3-1) top plate (9-1).