KR19990050428A - Holder for standard S-type optical connectors with self-aligning and locking in plug-in applications - Google Patents

Abstract

The present invention has a simple configuration for the plug-in applications that are applied in various communication equipment, and the SC-type optical connector is easily mounted on the printed circuit board, and the self-aligning function to accurately position the adapter mounted on the backplane; A standard SC-type optical connector holder with self-aligning and locking functions in plug-in applications with self-locking to prevent the SC optical connector from slipping off when the printed circuit board is inserted or removed from the subrack. It is about.

The optical signal processing method is not only complicated for the circuit design due to the interface problem between the printed circuit board and the backplane, but also for the reliability of the transmitted signal. Many problems can occur.

The present invention provides an accurate connection between the SC type optical connector 9 mounted by the connector holder 10 of the printed circuit board 6 and the adapter 6 mounted on the backplane 2 at the rear end of the subrack 1. Holder for standard SC type optical connector with self-aligning function and locking function for transmitting effective, low loss optical signal from printed circuit board "A" to another printed circuit board "B" or other optical transmission equipment As such, the center of the optical cable of the SC-type optical connector 10 and the center of the adapter 4 mounted on the backplane 20 can be naturally matched by the inclined surface formed on the front portion of the SC-type optical connector 9. , The inner size of the connector holder (9) than the outer size of the SC-type optical connector (9) so that the SC-type connector (9) can freely flow within the allowable range inside the connector holder 10 to have a self-aligning function Is characterized by being formed in a large structure.

Description

Holder for standard S-type optical connectors with self-aligning and locking functions for plug-in applications

The present invention has a simple configuration for the plug-in applications that are applied in various communication equipment, and the SC-type optical connector is easily mounted on the printed circuit board, and the self-aligning function to accurately position the adapter mounted on the backplane; A standard SC-type optical connector holder with self-aligning and locking functions in plug-in applications with automatic locking to prevent the SC optical connector from falling off when the printed circuit board is inserted or removed from the subrack. It is about.

Various exchange and transmission equipments currently under development use the "plug-in unit" structure specified in IEEE 1301 or 1301.1, and the use of optical signal processing is essential for processing a large amount of high-speed data. However, the optical signal processing method is not only complicated to design the circuit due to the interface problem between the printed circuit board and the backplane, but also to the "plug-in unit" method which is generally used in the complicated and high density communication equipment. Many problems can also occur in reliability, so there is a limit to using it realistically. As described above, the above problem can be solved by allowing the optical connector to be accommodated in the plug-in unit for optical communication. However, it is very difficult to attach a standard SC optical connector to a printed circuit board and use it simultaneously with the electrical connector. In order to solve this problem, a large connector company in each country is developing a new product, but the product using the connector holder as the present invention has not been announced yet.

Therefore, in the present invention, it is difficult to exactly match each center when connecting the adapter mounted on the backplane by continuously stacking the SC-type optical connector on the printed circuit board for plug-in applications applied in various communication equipment, It provides additional connector holders that implement self-aligning features that can be precisely matched and self-locking to solve the problem of easy separation between the connector holder and the SC optical connector. The aim is to provide a holder for a standard SC-type optical connector with self-aligning and locking functions in plug-in applications that allow them to be used inexpensively and reliably, without processing or deformation.

1 is a perspective view of a sub rack on which a printed circuit board equipped with an optical connector according to an embodiment of the present invention is mounted;

Figure 2 is a mounting method and configuration of the SC-type optical connector and connector holder mounted on a printed circuit board according to an embodiment of the present invention,

3 is a detailed view of the locking device portion of the SC-type optical connector shown in Figure 2, A is a cross-sectional view, B is a side view,

Figure 4 is a detailed view of the locking device portion and the cross-section of the connector holder shown in Figure 2, A is a cross-sectional view, B is a side view,

5 is a state diagram in which the present invention is mounted on a printed circuit board, where A is an assembled state, and B is a flat sectional view.

* Explanation of symbols for the main parts of the drawings

1: sub rack 2: backplane

3: connector (male) 4: adapter (optical)

5: guide pin 6: printed circuit board

7: guide bushing 8: connector (female)

9: optical connector 10: connector holder

11: guide rail 12: guide inside the adapter

13: adapter insertion hole 14: groove of the mold

15: Guide 16: Press Peg on Optical Connector

17: insert nut 18: inner shell

19: outer shell 20: optical cable

21: Optical patchcode 22: Ferrule

In order to achieve the above object, in the present invention, an adapter mounted on the SC type optical connector 9 mounted by the connector holder 10 of the printed circuit board 6 and the backplane 2 at the rear end of the sub rack 1 ( 6) Standard SC type with self-aligning function and locking function to transfer effective, low loss optical signal from printed circuit board "A" to other printed circuit board "B" or other optical transmission equipment through accurate connection of 6). As the holder 10 for an optical connector, the center of the optical cable of the SC type optical connector 10 and the center of the adapter 4 mounted on the backplane 20 are formed on the inclined surface formed on the front surface of the SC type optical connector 9. And the self-aligning function, so that the SC-type connector 9 can freely flow within the allowable range inside the connector holder 10 so as to have a natural self-aligning function. The internal size of the holder 9 is large Characterized in that.

In addition, the SC-type optical connector (9) has an open structure having a "ja" shaped jaw so as not to be separated from the connector holder 10 and the directional latch 12 such as a fishing needle is installed on the front side to the rear direction It has a structure that can be inserted only, the right angle triangular jaw 13 of the latch 12 is caught in the "+" type groove 14 formed in the side of the SC type optical connector 9, SC type optical connector It is characterized in that (9) is not separated from the connector holder (10).

In addition, the lower part of the connector holder 10 is located exactly on the printed circuit board, and prevents the connector from being rotated due to external loads, and the metal insert nut 17 is integrally formed in order to firmly fix the press pegs 16. It is characterized by being molded.

With reference to the accompanying drawings, a preferred embodiment of a standard SC type optical connector holder having a self-aligning function and a locking function in a plug-in application according to the present invention will be described in more detail.

1 is a printed circuit board 6 mounted with a holder 10 for a standard SC type optical connector 9 having a self-aligning function and a locking function in a plug-in application according to an embodiment of the present invention. As a perspective view of the sub-rack 1, various connectors mounted on the printed circuit board 6 when the printed circuit board 2 is guided along the guide rail 11 below the sub-rack 1, Guide bushings 7 mounted primarily on the printed circuit board 6 in order to align the centers of the contact portions 8 and 9 with the connection centers of the various connectors 3 and adapters 4 mounted on the backplane 2. And guide pins (5) mounted on the backplane (2) at the rear end of the subrack (1) and guided to a position within the connection allowance allowed by the respective connectors (3, 8, 9) and the adapters (4).

Each of the firstly guided positions 3, 8, 9 and adapters 4 are more precisely aligned with the connection center secondly by their own guide system. Here, the secondary position securing method for the holder 10 for the optical connector of the standard SC type having the self-aligning function and the locking function in the plug-in application according to the present invention will be described.

The SC type optical connector 9 attached to the printed circuit board 2 and connected to the SC type optical patch cord 21 to which the connection position is primarily guided has an inclined guide 15 and a backplane 2 formed on the front of the connector. Guided by the adapter (4) attached to the guide to the correct connection position. At this time, if the SC-type connector 9 is completely fixed by the connector holder 10, an accurate connection position cannot be expected due to assembly tolerances of the printed circuit board 2 and the sub rack 1, and the like.

Therefore, the connector holder 10 allows the SC-type optical connector 9 to fine-tune the connection center itself for accurate connection by securing an allowable space that can be flowed while accommodating the SC-type connector 9 so as not to escape. It has the feature of careful function.

2 is a view illustrating a method and configuration of mounting an SC-type optical connector 9 and a connector holder 10 mounted on a printed circuit board according to an embodiment of the present invention. The connector holder 10 may include a printed circuit board 6. It is secured by the press pegs 16 and the insert nut 17 to the hole which is processed in the inside, and is fixed so that it may not rotate by an external load.

The SC type optical connector 9 is fixed by being pushed and inserted from the front side of the connector holder 10 to the rear side as shown in FIG. 2, and the jaw 13 of the latch 12 of the connector holder 9 is SC type. Although it is possible to flow inside the connector holder 10 by being caught by the grooves 14 of the + type for front and rear operation of the inner shell 17 of the optical connector 10, it is designed not to be separated in the front and rear directions.

FIG. 3 is a detailed view showing the internal structure of the SC type optical connector 9 shown in FIG. 2, where A is a plan view (cross section) and B is a side view of which the ferrule 22 to which the optical cable 20 is connected is mounted. In order to prevent the shell 18 from escaping from the outer shell 19, the jaw shape of the inner shell 18 and the jaws 14 formed in the side of the outer shell 19 are shown. The groove 14 of the mold is fixed to the connector holder 10.

4 is a detailed view showing the structure of the connector holder 10 having the features of the present invention shown in FIG. 2, where A is a plan view and B is a side view.

As shown in FIG. 4, the connector holder 10 is accurately positioned on the printed circuit board 6 so that the load generated when the printed circuit board 6 is engaged with the backplane 2 along the guide rail 11 is shown. It has a press peg 16 and an insert nut 17 at the bottom to prevent the connector from being rotated and to fix the connector firmly, and the SC type optical connector 9 inserted at the front thereof is prevented from being detached. It has a latch 12.

When the SC type optical connector 9 is inserted into the connector holder 10, it is opened by the inclined guide of the latch 12 for the locking device, and the jaw 13 of the latch 12 is the SC optical connector 9. ), So as not to be easily detached by being caught by the " + " grooves 14 of the < RTI ID = 0.0 > ", < / RTI > ), The SC-type connector 9 is not detached from the connector holder 10 when it is detached from the backplane 2.

In addition, the inner size of the connector holder 10 is slightly larger than the outer size of the SC type optical connector 9, so that the SC type connector 9 can be mounted even if the connection centers of the SC type connector 9 and the adapter 4 do not coincide with each other. ) Is designed to move by itself to match the connection center due to the front guide portion 15 so that the printed circuit board 6 is guided to the guide rail 11 installed in the lower part of the subrack 1 so that the backplane 2 It is possible to solve the poor connection that may occur when inserted in the.

5 is a detailed view showing the coupling state of the connector holder 10 and the SC type optical connector 9 mounted on the printed circuit board 6 of the present invention, A is an assembly state, B is a connector holder 10 and A plan view of a cross section in which an SC type optical connector is coupled.

Place the SC-type optical connector 9 to which the optical cable 20 is connected in front of the connector holder 10, and apply the rear end of the SC-type optical connector 9 from the front of the connector holder 10 to the rear side. The latch 12 opens outward along the inclined surface of the latch 12 formed in the holder 10 and is inserted into the connector holder 10.

When the jaw 13 of the latch 12 of the connector holder 10 is caught in the groove of the "+" type formed on the side of the SC type optical connector 9, the SC type optical connector 9 is the fifth. As shown in the figure, the jaws of the connector holder 10 are constrained 360 degrees so that they cannot be randomly released.

The force of the latch 12 of the connector holder 10 to restrain the SC-type optical connector 9 is greater than that of the adapter 4 mounted on the backplane 2 to the force of the SC-type optical connector 9. When the printed circuit board 6 is detached from the backplane 2, the SC type optical connector 9 also naturally detaches from the adapter 4 by more than twice.

In addition, various connectors 8 and 9 of the printed circuit board 6 are mounted on the backplane 2 along the guide rails 11 installed under the subrack 1. When connected to, it is primarily close to the connection position by a guide pin 5 mounted to the backplane 2.

However, if the connection position is not correct, the optical signal characteristics may be lost after the connection, so that the SC type optical connector 9 can flow inside the connector holder 10 so that the center of the SC type optical connector 9 can be moved to the front. The sub guides 15 naturally matched the center of the adapter 4 to within 1.5 microns.

The holder of a standard SC type optical connector with self-aligning and locking function in plug-in applications is a plug which is guided along a guide rail at the bottom of the subrack and connected to an adapter mounted on the backplane at the rear of the subrack. The SC type optical connector mounted on the printed circuit board of the in unit can be used for correct connection by using the self-aligning function of the connector holder.

In addition, it is to provide low-loss optical signal connection that is required in various communication equipments, and it is precisely located on the printed circuit board and prevents rotation of the connector and prevents the rotation of the connector due to external load. peg) and insert nuts for rigid fixing are molded in the lower part of the connector holder, and these two supports are designed to be accurately and firmly fixed to the printed circuit board.

The press pegs are made of the same material as the connector holder to prevent damage to the printed circuit board when the press pegs, which are larger than the press peg fixing holes in the printed circuit board, are press-fitted and fixed. It is designed so that there is no damage of screw when fixing with metal screw for firm fixing with printed circuit board by inserting and molding in one piece during injection molding of holder.

In addition, a part of the upper part of the connector holder is larger than the boot size of the SC type optical patch cord so that the SC type optical patch cord 21 to which the standard SC type optical connector and the optical cable are connected can be easily mounted on the connector holder without deformation. The SC type optical connector prevents the connector holder from deviating upward after mounting by opening the SC type optical connector connected to the SC type patch cord from the front to the rear of the connector holder.

The inclined jaw of the latch of the connector holder is caught in the "+" type groove formed on the side of the SC connector for front and rear operation of the inner shell of the SC connector so that the back and forth of the connector holder can be prevented from falling out. It is easy to insert, and once mounted, it is prevented from coming off 360 degrees in all directions.

In addition, the inner dimension of the connector holder is larger than the outer dimension of the SC type connector, allowing the SC type connector to flow within the allowable range in the connector holder, so that the center of the SC type optical connector is plugged into the backplane. When in), it is designed to coincide with the center of the adapter mounted on the backplane due to the inclined surface formed on the front of the SC-type optical connector.

As described above, the present invention has a simple configuration in a holder for an optical connector of a standard SC type having an automatic self-aligning function and a locking function in a plug-in application, and at the same time, effectively replaces an optical signal of the printed circuit board "A". By allowing transmission to "B" or other optical transmission equipment, the system design can be facilitated to provide economics, and the reliability of the system can be improved by preventing loss due to conversion of various signals.

Claims (3)

Effective through accurate connection of the SC type optical connector 9 mounted by the connector holder 10 of the printed circuit board 6 and the adapter 6 mounted on the backplane 2 at the rear end of the subrack 1, As a holder for a standard SC type optical connector having a self-aligning function and a locking function for transferring a low loss optical signal from a printed circuit board "A" to another printed circuit board "B" or other optical transmission equipment, The center of the optical cable of the SC-type optical connector 10 and the center of the adapter 4 mounted on the backplane 20 can be naturally matched by the inclined surface formed on the front portion of the SC-type optical connector 9, and In order to allow the SC type connector 9 to flow freely within the allowable range inside the connector holder 10, the inner size of the connector holder 9 is larger than that of the SC type optical connector 9. Holder for standard SC type optical connectors with self-aligning and locking functions for plug-in applications. The method of claim 1, The SC-type optical connector 9 has an open structure having a "a" shaped jaw so as not to be separated from the connector holder 10, and a directional latch 12, such as a fishing needle, is installed on the front side to the rear direction. It has a structure that can be inserted only, the right angle triangular jaw 13 of the latch 12 is caught in the "+" type groove 14 formed on the side of the SC type optical connector 9 and the SC type optical connector ( In the plug-in application, the self-aligning function and the locking function can be mounted on the printed circuit board 6 so that the standard SC optical connector can be mounted on the printed circuit board 6 without deformation. Holder for optical connectors of standard SC type. The method of claim 1, The lower part of the connector holder 10 is located exactly on the printed circuit board, prevents the connector from being rotated due to external loads, and the metal insert nut 17 is integrally formed for the press pegs 16 and the rigid fixing. Holder for standard SC type optical connectors with self-aligning and locking functions for plug-in applications.