KR200314839Y1 - Polishing jig for optical connector ferrule - Google Patents

Abstract

The present invention relates to a polishing jig for an optical connector ferrule, and in particular, the present invention includes a coupling member protruding and fixed by a predetermined length in the center, and includes a plurality of through-holes inclined at an angle to accommodate the ferrules to be polished. Lower plate; A top plate which is formed symmetrically in the plurality of through holes and includes a plurality of jig holes for fixing the ferrules, and is horizontally moved by external force to simultaneously fix the ferrules; A spring inserted into the coupling member of the lower plate to distribute a load generated between the upper plate and the lower plate; And a fixing member which is coupled to the coupling member of the lower plate to fix the upper plate and the lower plate. Therefore, according to the present invention, the ferrules into which the optical fiber is inserted are inclined at a predetermined angle in a predetermined position and the top plate is horizontally fixed to simultaneously fix a plurality of ferrules in one-touch manner, thereby simultaneously fixing a plurality of ferrules to reduce the speed of the APC polishing process. As a result, productivity is improved.

Description

Polishing jig for optical connector ferrule

The present invention relates to a polishing jig, and more specifically, to insert a SC / APC type of ferrules in a predetermined position and to horizontally move the top plate to simultaneously fix a plurality of ferrules in one-touch manner to increase the processing speed of the polishing process, The present invention relates to a polishing jig for an optical connector ferrule which inserts a spring between a lower plate and a lower plate to perform APC polishing with a uniform load.

The optical communication technology, which is the most important infrastructure field for realizing the information society of the 21st century, is a cutting-edge communication technology capable of transmitting large-capacity information through highly integrated multiplexing, and FTTH (Fiber To The Home), which enables optical communication to the home, Of course, CATV and moving picture communication are made possible. In addition, transmission technologies such as wavelength division multiplexing (WDM) and time division multiplexing (TDM) have been rapidly developed to realize high capacity transmission. The amount of information is increased by multiplexing, and the gigabit or tens of gigabit time division multiplexing information is increased to the terabit by wavelength multiplexing.

In order to realize this, transmission technology and component technology are required. However, if the connection technology of the optical transmission line is not supported at the lowest layer, high quality transmission becomes difficult. There is a situation. The optical fiber used in the optical communication network is usually made of quartz having a diameter of 125 μm, and the core called the core is designed to be slightly higher than the refractive index of the clad, and its diameter is about 8 to 10 μm. The diameter used is 9.3 μm. In order to connect such optical fiber, the optical axis of 9.3㎛ diameter must be exactly matched, and the optical connector has to be repeatedly attached and detached, so long-term reliability is required that the characteristics are not changed even with temperature change, vibration and shock.

In addition, in order to develop a high quality optical connector, a special structure that is not implemented in an electrical connector or a coaxial connector must be considered. The main technology applied to the optical connector requires a technology of precisely aligning optical fibers with each other. The housings should be designed so that they are easily affected by external force or environment change because of easy physical coupling technology (PC connection) and operability to make and join protrusions so that the cores of the cores are in close contact with each other. In addition, even if a PC (Physical Coupling) connection and housing is configured as an alignment technology by fully reflecting the design concept of the optical connector, the performance cannot be fully exhibited unless the polishing technology is supported.

The ferrule used in the optical connector performs a function of fixing the cross section of the optical fiber to the center and aligning it, and supporting the optical fiber of another optical connector to be closely connected to each other. The ferrule end face is shaped differently according to the application of the optical connector in which the ferrule is used, and the end face of the ferrule end face is flat polish, PC polishing, SPC polishing, or Super Physical Coupling. polish) and APC polishing (Angle Physical Coupling polish).

Polishing jig is required to polish the end face of ferrule, and this polishing jig has a unique structure for each manufacturer. The structure of the polishing jig differs from one manufacturer to another, and has the characteristics of determining the polishing quality according to the method of fixing the ferrule and the method of applying pressure to the ferrule. A general conventional grinding jig consists of a part for fixing the ferrule and a part for fixing the jig itself.

However, in the conventional polishing jig, the ferrules are inserted into the jig holes and then the ferrules are fixed to the jig holes by using the respective nuts. Thus, the preparation time for the polishing operation is longer and the ferrules are fixed by fixing the ferrules at different pressures. There is a problem that the polishing angle and the polishing degree are implemented differently because the positions fixed to the jig holes are different from each other. Therefore, a predetermined gap is generated between the two ferrule end faces contacted, thereby forming an air layer, which causes a problem of a large reflection loss due to the formed air layer. That is, since the pressure difference due to the length deviation of the standard ferrule is inevitably generated, even if the ferrule of the similar length is contacted, it cannot be brought into close contact. In addition, in the conventional APC polishing, there is a problem in that the load applied to the polishing jig is not uniform and often deviates from the optimum polishing angle range (for example, about 8 °).

Accordingly, the present invention has been made to solve the conventional problems as described above, the object of the present invention is to fix the ferrule inserted into the optical fiber in a predetermined position and to move the top plate horizontally at the same time in a one-touch manner An optical jig for fixing an optical connector ferrule is provided.

Another object of the present invention is to provide a polishing jig for an optical connector ferrule to maintain a uniform polishing angle of the optical fiber inserted into each ferrule by inserting a spring between the upper plate and the lower plate. .

1 is an exploded perspective view of an optical jig for ferrule polishing connector according to the present invention,

2 is a rear view of the lower plate according to the present invention,

3 is a coupling state diagram of the polishing jig for optical connector ferrule according to the present invention,

Figure 3a is a view showing a state in which the ferrule is inserted and fixed in the polishing jig for optical connector ferrule according to the present invention,

Figure 3b is a cross-sectional view of the ferrule is fixed to the polishing jig for optical connector ferrule according to the present invention,

4 is a state diagram illustrating a state in which the polishing jig for an optical connector ferrule according to the present invention is mounted on a polishing machine to perform a polishing process.

♣ Explanation of symbols for the main parts of the drawing ♣

100: polishing jig 110: bottom plate

111: through hole 112: ferrule fixing groove

113: engaging hole 113a: engaging projection

114: screwing member 120: spring

130: top 131: jig hole

132: insertion hole insertion hole 133: screw connection member insertion hole

140: fixing nut 142: rotation preventing groove

The present invention for achieving the above object includes a lower plate for receiving the ferrules to be polished including a plurality of through-holes inclined at a predetermined angle, and includes a coupling member protruding fixed to the center; A top plate which is formed symmetrically in the plurality of through holes and includes a plurality of jig holes for fixing the ferrules, and is horizontally moved by external force to simultaneously fix the ferrules; A spring inserted into the coupling member of the lower plate to distribute a load generated between the upper plate and the lower plate; And it is characterized by consisting of a fixing member for fixing the upper plate and the lower plate in combination with the coupling member of the lower plate.

Hereinafter, a preferred embodiment of the polishing jig for an optical connector ferrule according to the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view of an optical connector ferrule polishing jig 100 according to the present invention, FIG. 2 is a rear view of the lower plate according to the present invention, and FIG. 3 is an optical connector ferrule polishing jig 100 according to the present invention. 3A is a view showing a state in which ferrules are inserted and fixed in the optical connector ferrule polishing jig 100 according to the present invention, and FIG. 3B is an optical connector ferrule polishing jig 100 according to the present invention. ) Is a cross-sectional view of the ferrules fixed.

As shown in Figures 1 to 3b, the polishing jig for the optical connector ferrule (hereinafter, abbreviated as "grinding jig") 100 is largely the bottom plate 110, the spring 120, the top plate 130 and the fixing nut. It consists of 140.

The lower plate 110 has a circular shape, a plurality of (eg, 18) through holes 111 and a plurality of through holes penetrating at an angle (for example, 8 to 8.7 °) inclined and formed at regular intervals in the circumferential direction. Circular ferrule fixing grooves 112 are formed around the 111 and each has a ferrule locking jaw 112a protruding a predetermined length symmetrically from each other, and the engaging projection 113a of a predetermined diameter inside the fixing fixed to each other. A predetermined number (for example, four) of coupling holes 113 and a cylindrical screw coupling member 114 protruding and fixed to a central length by a predetermined length, and a screw coupling line formed on an outer circumferential surface thereof, and having an inner side penetrated to a predetermined diameter. consist of. Here, although the coupling hole 113 is fixed to the engaging projection 113a can be formed at any point of the lower plate 110, it is located at each vertex of the square to be stably coupled to the upper plate 130 to be described later It is desirable to implement so that. The bottom of the lower plate 110 is as shown in FIG.

The upper plate 130 is formed in the same circular shape as the lower plate 110, and a plurality of jig holes to accommodate the ferrules to be symmetrically penetrated through the through hole 111 and the ferrule fixing groove 112 of the lower plate 110, respectively. 131 and a plurality of coupling protrusion insertion holes 132 through which the coupling protrusions 113a of the lower plate 110 are symmetrically received to accommodate each coupling protrusion 113a, Penetrated symmetrically with the screw coupling member 114 is composed of a screw coupling member insertion hole 133 for receiving the screw coupling member 114. Here, the plurality of jig holes 131, the coupling projection insertion hole 132 and the screw coupling member insertion hole 133 are ferrules, coupling projections 113a and screw coupling, respectively, to allow horizontal movement of the upper plate 130. It is desirable to implement an ellipse that is a predetermined length longer than the diameter of the member 114.

The spring 120 is inserted into each coupling protrusion 113a of the lower plate 110 to distribute the load generated between the upper plate 130 and the lower plate 110 to ferrules inserted and fixed in the respective through holes 111. It serves to support the application of uniform pressure. In addition, the spring 120 inserted into each coupling protrusion 113a is inserted into a gap between each coupling protrusion 113a and the coupling hole 113 to prevent separation.

The fixing nut 140 has a cylindrical shape through which the inside is penetrated by a predetermined diameter so as to be screwed with the screw coupling member 114 of the lower plate 110, and the screw coupling groove 141 is formed on the inner circumferential surface thereof, The anti-rotation groove 142 for preventing the rotation of the 100 is formed in a predetermined length in the center direction. In addition, the outer circumferential surface 143 of the fixing nut 140 is made of a fine concavo-convex shape to facilitate screwing to prevent sliding during rotation.

Looking at the bonding sequence of the polishing jig 100 as follows.

First, the springs 120 are respectively inserted into the coupling protrusions 113a of the lower plate 110, and the coupling protrusion insertion holes 132 and the screw coupling member coupling holes 133 of the upper plate 130 are respectively lower plate 110. After the insertion into the coupling protrusion 113a and the screw coupling member 114, the fixing nut 140 is screwed to the screw coupling member 114. A bonding state diagram of the polishing jig 100 completed by the above-described bonding sequence is shown in FIG. 3.

Looking at the process of inserting and fixing the ferrule 300 in the polishing jig 100 as follows.

As shown in FIGS. 3A and 3B, the optical fibers are respectively inserted into the ferrules 300 to be polished, and then the ferrules 400 are inserted into the through holes 111 of the lower plate 110, respectively. Here, since the through holes 111 are formed to be inclined at a predetermined angle (for example, 8 to 8.7 °), the end surfaces of the ferrules 300 inserted into the through holes 111 are also inclined at a predetermined angle. This is for APC polishing, in order to maintain the standard angle (eg 8 ± 0.2 °) of the ferrule with the lowest loss rate of the optical fiber. When the ferrules 300 to be polished are inserted into the through hole 111, the plurality of ferrule catching jaws 112a formed in the ferrule fixing groove 112 are caught by the flange portion of the ferrule 300. Next, the spring 120 is inserted into each of the coupling protrusions 113a of the lower plate 110. The spring 120 inserted into each coupling protrusion 113a is implemented to be inserted into a gap between each coupling protrusion 113a and the coupling hole 113, so that the spring 120 is coupled to each coupling protrusion due to the movement of the upper plate 130. No deviation is made at 113a.

Next, the coupling protrusion insertion hole 132 and the screw coupling member coupling hole 133 of the upper plate 130 are inserted into the coupling protrusion 113a and the screw coupling member 114 of the lower plate 110, respectively, and then the fixing nut. Screw 140 to the screwing member 114. At this time, the upper plate 130 is moved in the horizontal direction to maintain the optimum polishing angle of the ferrules 300, and then fixed by fixing the fixing nut 140 to the screwing member 114. When the upper plate 130 is horizontally moved and fixed with the fixing nut 140, the ferrules 300 are fixed by the ferrule locking jaw 112a and the spring 120 to maintain the optimum polishing angle. Becomes possible. In addition, the ferrules 300 to be polished may be fixed at the same time only by horizontal movement of the upper plate 130.

Although only two ferrules 400 are shown in FIGS. 3A and 3B, this is only an example, and the number of through holes 111 may be fixed at the same time. Further, the polishing jig 100 shown in Figs. 1 to 3b is for APC polishing APC type ferrules and attenuator ferrules. As mentioned above, APC polishing is polishing to maintain the standard angle (eg, 8 ± 0.2 °) of the ferrule with the lowest loss rate of the optical fiber.

4 is a state diagram illustrating a state in which the polishing jig 100 for an optical connector ferrule according to the present invention is mounted on a polishing machine to perform a polishing process.

As shown in FIG. 4, in order to perform the polishing process of the ferrules 300, first, a specific abrasive paper 420 is placed on the polishing pad 410, and the abrasive paper 420 is shown in FIGS. 3A and 3B. As shown, the polishing jig 100 is fixed to the ferrules 300 to be polished. Next, the weight handle 440 connected to the weight 430 of the polishing machine 400 is moved so that the load pin 450 is lowered on the screwing member 114 of the polishing jig 100 so that the polishing jig ( 100 is fixed and the anti-rotation pin 460 of the polishing machine 400 is inserted into the anti-rotation groove 142 of the polishing jig 100 so that the polishing jig 100 is rotated or positioned during the rotation operation of the polishing process. To prevent it from falling off. Thereafter, by operating the polishing machine 400 to drive the polishing pad 410, the APC polishing of the optical fiber of the ferrule 300 protruding from the lower plate 110 of the polishing jig 100 by the polishing paper 420. .

The above descriptions are merely illustrative of one embodiment, and the present invention is not limited to the above-described embodiments, and various modifications can be made within the appended utility model registration claims. For example, the shape and structure of each component specifically shown in the embodiment of the present invention may be modified.

As described above, according to the polishing jig for an optical connector ferrule according to the present invention, the ferrule into which the optical fiber is inserted is inclined at an angle to a predetermined position and the top plate is horizontally moved to simultaneously fix a plurality of ferrules in a one-touch manner, simultaneously. By fixing the two ferrules can reduce the speed of the APC polishing process has the effect of improving the productivity.

In addition, the present invention is implemented by inserting a spring between the upper plate and the lower plate of the polishing jig so that the load is applied equally, thereby maintaining the polishing degree of the optical fiber inserted into each ferrule uniformly to reduce the re-polishing rate to reduce the cost and high quality There is an effect that can perform the polishing process.

Claims (6)

A lower plate including a coupling member protrudingly fixed to a predetermined length in the center and including a plurality of through holes penetrated obliquely at a predetermined angle; A top plate which is formed symmetrically in the plurality of through holes and includes a plurality of jig holes to fix the ferrules, and is horizontally moved by an external force to simultaneously fix the ferrules; A spring inserted into the coupling member of the lower plate to distribute a load generated between the upper plate and the lower plate; And Polishing jig for an optical connector ferrule consisting of a fixing member for fixing the upper plate and the lower plate in combination with the coupling member of the lower plate. The method of claim 1, wherein the lower plate A ferrule fixing groove including a plurality of through holes penetrating at a predetermined angle and formed at regular intervals in a circumferential direction, ferrule locking grooves formed around the plurality of through holes and protruding a predetermined length from each other symmetrically, and a predetermined diameter inside Optical connector comprising a predetermined number of coupling holes each of which is integrally projected and fixed to the projections, and a cylindrical screw connection member which is projected and fixed by a predetermined length and has a screw coupling line formed on an outer circumferential surface thereof, and having an inner side penetrated with a predetermined diameter. Polishing jig for ferrules. The method of claim 1, wherein the top plate A plurality of jig holes for receiving ferrules to be symmetrically penetrated symmetrically with the through-holes and ferrule fixing grooves of the lower plate, and a plurality of coupling protrusions symmetrically penetrating with each of the coupling protrusions of the lower plate to accommodate each coupling protrusion. An insertion hole and a coupling member insertion hole penetrating symmetrically with the coupling member to receive the coupling member, The plurality of jig holes, coupling projection insertion hole and the coupling member insertion hole is characterized in that the light is implemented as an oval longer than the diameter of the ferrules, coupling protrusions and coupling member, respectively, so as to allow horizontal movement by a predetermined length. Polishing jig for connector ferrules. The method of claim 1, wherein the fixing member The fixing nut is formed in a cylindrical shape through which the inside is penetrated by a predetermined diameter so as to be screwed with the coupling member of the lower plate, the screw coupling groove is formed on the inner circumferential surface, and the anti-rotation groove for preventing rotation during grinding is a predetermined length in the center direction Polishing jig for an optical connector ferrule characterized in that. The optical connector according to any one of claims 1 to 3, wherein the through hole is obliquely penetrated in the range of 8 ° to 8.7 °, and maintains the ferrule end face after grinding to 8 ± 0.2 °. Polishing jig for ferrules. The polishing jig according to any one of claims 1 to 3, wherein the ferrules include ferrules of APC type and ferrules for attenuator.