KR100281639B1 - SSC-type optical adapters with stacking capabilities for plug-in applications - Google Patents

Abstract

The present invention can be continuously mounted in the same slot of the backplane to be used in the plug-in application of the communication system, such as exchange equipment, transmission equipment using the SC type optical connector mounted on the printed circuit board, The present invention relates to an SC-type optical adapter with a stacking function for a plug-in application that can automatically match the center of the adapter with the center of the SC optical connector mounted on the printed circuit board.

The present invention can be successively mounted in the same slot of the backplane to be used in the plug-in application of the communication system, such as exchange equipment, transmission equipment using the SC type optical connector mounted on the printed circuit board SC-type optical connector (9) mounted on the backplane (2) and mounted on the printed circuit board (6) to enable the function of automatically matching the center of the optical fiber and the SC optical connector mounted on the printed circuit board. Optical adapter 4 for transferring an effective and low loss optical signal from a printed circuit board "A" to another printed circuit board "B" or other optical transmission equipment in a plug-in application manner through an accurate connection with The adapter 4 is vertically mounted on the printed circuit board 6 so that the adapter 4 can be continuously stacked and mounted in the same slot of the backplane 2, SC-type optical adapter with stacking function for plug-in applications, which has "c" shaped grooves on the top and bottom walls to provide smooth connection characteristics without interference with the connector holder 10 mounted on the printed circuit board. being.

Description

SSC-type optical adapters with stacking capabilities for plug-in applications

The present invention can be continuously mounted in the same slot of the backplane to be used in the plug-in application of the communication system, such as exchange equipment, transmission equipment using the SC type optical connector mounted on the printed circuit board, The present invention relates to an SC-type optical adapter with a stacking function for a plug-in application that can automatically match the center of the adapter with the center of the SC optical connector mounted on the printed circuit board.

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 such, the above problem can be solved by allowing the optical connector to be accommodated in the plug-in unit for optical communication. However, the conventional SC optical adapter cannot be continuously attached onto the back plane of the plug-in unit, so high-density packaging is impossible. Do.

In addition, there is a problem that it is difficult to use in the same slot due to contact compatibility with the electrical connector.

Therefore, the present invention can be continuously mounted in the same slot of the backplane to be used in the plug-in application of the communication system, such as exchange equipment, transmission equipment using the SC type optical connector mounted on the printed circuit board The aim is to provide an SC-type optical adapter with a stacking function for plug-in applications that enables the center of the adapter to automatically match the center of the SC optical connector mounted on the printed circuit board.

FIG. 1 is a view illustrating a sub-chip in which an SC-type optical connector is mounted in a connector holder of a backplane equipped with an optical adapter that can be stacked and mounted continuously without space loss in the same slot according to an embodiment of the present invention. Perspective view of rack,

Figure 2 is a structure and mounting method of the adapter mounted on the backplane according to an embodiment of the present invention,

3 is a detailed view of the optical adapter locking device 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 showing a cross section of the locking device by the clip of the adapter shown in Figure 2,

Figure 5 is a cross-sectional view of the present invention is connected to the SC type optical connector can see a state diagram and a locked state.

* 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: clip

15: Guide 16: sleeve of optical connector

17: Pan nut 18: Inner shell

19: outer shell 20: Hurenzi

21: Optical patchcode 22: Ferrule

In order to achieve the above object, in the present invention, for a plug-in application applied in various communication equipments, an SC type optical connector mounted on a printed circuit board using a connector holder with a simple configuration is easily mounted on a backplane. It can be connected to the adapter precisely and can be stacked in the same slot so that there is no space loss in the backplane, and it is designed to be used with the existing 2 mm pitch electrical connector.

A preferred embodiment of an optical adapter having a stacking function for a plug-in application according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a printed circuit board equipped with a backplane 2 and an SC optical connector 9 equipped with an optical adapter 4 having a stacking function so as to be continuously mounted in the same slot according to an embodiment of the present invention. A perspective view of a sub rack 1 on which 6 is mounted. As shown, when the printed circuit board 6 is guided along the guide rail 11 below the sub rack 1, a printed circuit board ( 6) In order to match the center of the contact portion of the various connectors (8, 9) mounted on the backplane (2) and the connection center of the various connectors (3) and adapters (4) mounted on the backplane (2), Guide pins 5 mounted on guide bushings 7 and backplanes 2 are guided to positions within the connection allowance of the respective connectors 3, 8, 9 and adapters 4.

Each of the connectors 3, 8, 9 and the adapters 4, which are primarily guided in position, are respectively more precisely aligned with the connection center by means of their own guide system.

Here, only the optical adapter 4 having the stacking function for the plug-in application according to the present invention will be described.

The SC type optical connector 9 mounted on the printed circuit board 2 and primarily guided in connection position is inclined inside the inclined guide 15 formed on the front side and the adapter 4 mounted on the backplane 2. It is guided to the correct connection position by the molded guide 12.

That is, the optical adapter 4 according to the present invention is fixed to the backplane 2 and the SC type optical connector 9 mounted on the printed circuit board 6 freely flows in the connector holder 10 and the optical adapter The connection point is matched by the inside inclined guide 12 of (4).

FIG. 2 illustrates a state and a method of mounting the optical adapter 4 to the backplane 2 according to an embodiment of the present invention. The optical adapter 4 may include the adapter insertion hole 13 of the backplane 2. Inserted from the front to the rear through the back, and in close contact with the backplane (2) and fixed with a screw using a pan nut 17 integrally inserted on the flange 20 of the optical adapter (4) from the rear.

FIG. 3 is a detailed view of the locking portion of the SC type optical connector 9 with the adapter 4 of the SC type optical connector 9, and when the SC type connector 9 is inserted into the optical adapter 4, the outer shell 19 The connector 9 is inserted while the inclined portion of the clip 14 located inside the adapter 4 is inserted by the front portion of the adapter 4 and the jaw of the inner shell 18 of the connector 9 is connected to the jaw of the clip 14. While overlapping, the connector 9 and the adapter 4 are coupled to match the center of each other.

4 is a cross-sectional view showing the internal structure of the optical adapter 4 shown in FIG. 1, wherein the optical adapter 4 and the clip 14 are symmetrically manufactured with each other, and two clips 14 face each other. It is designed to put the sleeve 16 inside, and then put it in the body of the optical adapter 4 so as to assemble each other by ultrasonic welding.

The fan nut 17 for fixing with the backplane 2 is fixed after being pressed into the flange 20 after assembly of the optical adapter, and the flange 20 is plugged in because it is installed by rotating the direction 90 degrees compared with the conventional adapter. It is suitable for use in an application and can be mounted continuously in the same slot.

It is also designed to be compatible with existing 2 mm pitch copper pin electrical connectors (3, 8). In addition, as described above, when the SC optical connector 9 is inserted into the optical adapter 4, the center is coupled to the center through the guide 12 therein, and the ferrule 22 of the connector 9 is connected to the optical adapter 4. Is inserted into the sleeve 16.

In this case, the sleeve 16 has a split cylindrical structure and thus acts as a spring, thereby guiding the ferrule 22 without a tolerance. The end cross section of the ferrule 22 allows the insertion of the ferrule 22 inserted in the front and rear of the sleeve 16 to be slightly longer than the middle of the length of the sleeve 16 so that the loss of the optical signal can be minimized. have.

FIG. 5 is a perspective view showing that the optical adapter 4 and the SC type optical connector 9 are coupled to each other, and a detailed view showing the interior after the coupling. The optical adapter 4 and the SC type optical connector 9 are coupled to each other. Then, the jaw of the clip 14 is fixed while being caught with the inner shell 18 jaw inside the connector 9.

On the contrary, when dismantling, the locking device is released while the clip 14 is opened by the inclined portion of the outer shell 19 of the connector 9.

As described in detail above, the present invention is an optical adapter that compensates for the shortcomings of existing optical adapters that cannot be used in plug-in applications. Can be installed to facilitate system design and economically configure hardware.

According to the present invention, the SC type optical connector mounted on the printed circuit board of the plug-in unit which is guided along the guide rail under the sub-rack and connected to the adapter mounted on the backplane can be connected accurately by supporting the self-aligning function of the connector holder. have.

Since the flange of the adapter is installed at a 90 degree rotation angle compared with the existing standard SC type optical adapter, the adapter can be continuously stacked and mounted in the same slot of the backplane, thereby increasing space utilization.

The pan nut is integrated into the adapter body for precise positioning and easy mounting on the backplane, allowing for precise mounting in the field with just a screw. In addition, the basic size is 12.5 mm, so it can be used interchangeably with the existing 2 mm pitch electrical connector, and the "c" shaped grooves are machined on the left and right sides so that it is mounted on the printed circuit board when inserted into the backplane of the printed circuit board. Interference with the connector holder can be avoided.

When the SC type optical connector is inserted into the inside of the optical adapter, the clip inside is not caught by the jaw of the inner shell of the SC type optical connector, and the connection pressure is kept constant.

In particular, the flange of the adapter guided along the guide rail at the bottom of the subrack and mounted on the backplane at the rear end of the subrack is rotated 90 degrees compared to the existing standard SC type optical adapter, so it is continuously stacked in the same slot of the backplane. Space utilization is high.

Claims (1)

In the optical adapter 4 mounted on the backplane 2 so as to transmit an optical signal through an accurate connection with the SC type optical connector 9 mounted on the printed circuit board 6, the optical adapter 4 is a backplane ( 2) Hexagon pan nuts 17 made of metal are pressed into the flange 20 of the optical adapter 4 so as to be easily mounted on the optical adapter 4, and are integrally manufactured. Hurenji 20 is installed vertically of the printed circuit board (6) so that it can be mounted, and has a "C" groove in the upper and lower walls to avoid interference with the connector holder 10 mounted on the printed circuit board. SC-type optical adapters with stacking capabilities for plug-in applications.

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