KR0148888B1 - Idc type connector - Google Patents

Abstract

The present invention relates to a telephone line connection terminal which performs a role of enabling the communication by strongly connecting the telephone lines at the last point of the various cable connection points of the subscriber communication line from the telephone station to the subscriber, and the insulation coating of the telephone line at the same time as the telephone line is inserted Automatically peel off the gap between the insertion slots that are strongly connected to the conductor part of the telephone line to 0.1mm or less and minimize the stress concentration to accommodate all the telephone lines having a wide range of conductor diameter (0.4-10mm). The present invention relates to a communication IDC type connection terminal.

Description

IDC connection terminal

1 is a perspective view of an IDC type connection terminal according to the present invention.

FIG. 2 is a front view of the ICD connection terminal shown in FIG. 1. FIG.

3 is a partial cross-sectional view taken along the line A-A of FIG.

4 is a diagram showing a force-strain curve at the ICD connection terminal shown in FIG.

* Explanation of symbols for main parts of the drawings

1 ICD connection terminal 2 Telephone line

3: Insulation jacket 4: Conductor

10A, 10B: Subscriber's lead-in guide part I, II 11: Subscriber's slot

12: forging part 13: subscriber side report

13: stress distribution groove at subscriber side 15: stress concentration part

20: Induction guide for trunk line 21: Insertion slot for trunk line

22: local beam 23: local stress distribution groove

30: trial

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone line connection terminal, which performs a role of enabling communication by strongly connecting telephone lines at a final point among various cable connection points of a communication line from a telephone station to a subscriber, and in particular, an insulation coating portion of a telephone line at the same time a telephone line is inserted. Automatically removes the gap between the insertion slots, which are strongly connected to the conductors of the telephone line, to less than 0.1 mm and minimize stress concentration to accommodate all the telephone lines with a wide range of conductor diameters (0.4-1.0 mm). The present invention relates to an IDC (Insulation Displacement Connection) type connection terminal for wired communication.

The subscriber line from the telephone station to the subscriber consists of interconnected communication cables at various connection points. In the middle area of the subscriber line, the conductor diameter of the concentric lines is about 0.4 to 0.5 mm, and in most cases, they are connected to each other by using a modular IDC type connector that can simultaneously connect 25 pairs of concentric lines.

On the other hand, at the terminal distribution point of subscriber line, telephone lines with various conductor diameters with conductor diameters of concentric lines ranging from 0.4 to 1.0 mm are used.In order to connect the telephone lines to each other, the binding post method or the IDC method is mainly used. have.

The existing voice service represented by telephone and wired communication, which plays a role of exchanging information through interconnected telephone lines between subscribers, which are currently separated from each other, and non-voice such as data communication or video information, which is increasing in recent years. In particular, in order to provide a non-voice service in a telephone company, a uniform and reliable connection state is basically required at a connection point of a subscriber line. In order to maintain such a state, in the case of a copper cable, a method of connecting each connection point by an IDC method is widely used.

However, until now, most of the end distribution points have mainly used the binding post method, in which the binding post method is a method of winding a conductor several times on a threaded post and then tightening the conductor with a nut after removing the outer shell of the telephone line.

The above-mentioned binding post method has the advantage of connecting various types of telephone lines regardless of conductor diameter. On the other hand, connection is unstable and the connection part is easily corroded by the external environment, so that poor contact occurs frequently. There are disadvantages in that connection performance is determined. Due to these problems, there are many difficulties in providing various non-voice services in the binding post method.

Recently, in order to solve the shortcomings of the existing connection methods such as the bind depost method, the IDC method is used in the terminal distribution point.

In this method, the conductor is connected to the IDC type terminal while the outer shell is peeled off automatically by insertion of its own blade without having to peel off the outer shell to connect the telephone line. When the connection is made in such a state, a so-called gas tight connection is made so that the corrosive gas cannot access the connection site from the outside, so that the connection site deteriorates due to corrosion. Once connected by the conductor, it is possible to maintain connection reliability for a long time with strong connection while receiving constant force continuously.

As mentioned above, the IDC terminal has a number of advantages, but the disadvantage is that the acceptable conductor diameter is quite limited.

Looking at the characteristics of the typical IDC terminal pin currently being developed as follows.

In Korean Patent Publication No. 92-1535, the IDC beam is shaped like a T-shape to accommodate a wider range of conductor diameters so that a 0.3-0.5 mm conductor diameter can be accommodated in one insertion slot. Even the shaped IDC terminal has a maximum receiving conductor diameter (0.5 mm) of only 70% larger than the minimum receiving conductor diameter (0.3 mm). In addition, the T-shaped terminal has a disadvantage in that the field connection performance is considerably reduced because a considerable force is required in the connection process to accommodate the conductor diameter of 0.6mm or more. As a result, the connection terminals of this shape are not wide in the range of acceptable conductor diameters, so they cannot be used at terminal distribution points that must accommodate telephone lines with 0.4-1.0 mm conductor diameters.

The most common method used to accommodate 0.4 to 1.0 mm conductor diameters at longitudinal distribution points of subscriber lines is to accommodate wide conductor diameters using two insertion slots.

In US Patent 07-491,016, a representative example as described above, two insertion slots are made to accommodate a conductor diameter of 0.4-0.6 mm in one insertion slot, and a 0.9-1.0 mm telephone line in another slot. Manufactured to accommodate the overall to accommodate all conductors in the 0.4-1.0㎜ range.

However, if the connection terminal is manufactured in the shape as described above, the shape of the terminal block in which the connection terminal is installed as well as the shape of the connection terminal itself is complicated, which makes it difficult to manufacture the terminal block. Since the insertion slot has to be found and connected, field workability is also reduced, and an incorrect size of the telephone line is connected to the wrong insertion slot to damage the connection terminal.

Therefore, in order to solve the above problems, the press forging method reduces the spacing of the telephone line insertion slot to 0.1 mm or less, and manufactures the shape to disperse high level stresses according to the acceptance of a wide range of conductor diameters of 0.4-1.0 mm. An object of the present invention is to provide an IDC type connection terminal capable of connecting a telephone line having a conductor diameter without difficulty.

In order to achieve the above object, the present invention provides a telephone line connection terminal for connecting telephone lines at the last point of the various cable connection points of the subscriber communication line from the telephone station to the subscriber,

A subscriber side induction part having one inclined end surface and a forging processing part having a thickness difference between the induction induction part is formed under the subscriber side induction part to facilitate the insertion of the subscriber line telephone line. Subscriber side beam consisting of an insertion lot to be connected, and a stress distribution groove for distributing the stress caused by the connection of the telephone wire conductor and the terminal; A trunk line induction guide portion extending out to the other side of the subscriber side side and having an inclined surface to facilitate insertion of a local telephone line, and an insertion slot for trunk line which allows telephone line conductors and terminals to be connected simultaneously with the insertion of the telephone line; A local side beam composed of a local side stress dispersion groove for dispersing stress generated by the insertion of the main line telephone line; It is characterized by having a test plate located between the subscriber side and the side station to determine the connection of the telephone line.

Hereinafter, a preferred embodiment of the IDC type connection terminal according to the present invention with reference to the accompanying drawings will be described in detail.

1 is an overall perspective view of an IDC connection terminal according to the present invention,

2 is a front view of an IDC type connection terminal according to the present invention.

3 is a partial cross-sectional view taken along the line A-A of FIG.

As shown in Figs. 1 to 3, the IDC type connection terminal 1 of the present invention has a subscriber line insertion guide part I, II (10A, 10B) subscriber line insertion slot (1) for connecting a subscriber line telephone line. 11), forging processing section 12, the subscriber side beam 13, the subscriber side stress distribution groove 14, in order to connect the telephone line for the local side, the incoming line leading part 20 for the trunk line, the insertion slot 21 for the trunk line , The side beam 22, the side stress distribution groove 23 is made, and the test plate 30 to check the connection state of the telephone line is also installed.

In FIG. 1, a terminal block for mechanically connecting a telephone line to a connection terminal and protecting a connected telephone line is omitted for convenience.

To connect subscriber's phone line to access terminal. First, the telephone line 2 to be inserted has a shape that becomes thicker as the thickness goes down and the gap becomes narrower, so that it is in contact with the induction guide part I (10A) which can act as a blade only by its own shape. When the telephone line 2 moves downward after joining to the induction guide part I (10A) of this shape, the insulating shell 3 of the telephone line is automatically torn due to the above-mentioned blade action, and as a result, the conductor 4 of the telephone line ) And the connection terminal are in contact with each other.

However, it is often the case that the envelope is not completely removed from the induction zone.

In general, when the IDC connection terminal and the conductor are completely connected, the connection terminal is connected in the shape of 20% of the conductor.

This connection is so tight and perfect that it is called a gas tight connection. On the other hand, when the induction guide does not completely remove the outer sheath of the telephone line, and there is a dent of the sheath between the conductor and the connection terminal, a poor connection is naturally generated. Due to the repulsive force of the polymer material forming the sheath, it may cause the long-term reliability of the connection terminal in which unnecessary excessive force is applied to the connection terminal.

In order to prevent this, in the present invention, besides the induction induction part I (10A), the thickness of the induction induction part I (10A) is made while making the induction induction part II (10B) located below, and the insulator jacket which is not completely removed from the induction induction part I (10A). Remove the area (3). Since the draw induction part II (10B) is thin, the blade effect is larger than the draw induction part I (10A), and the outer skin removal performance is significantly superior.

If the telephone line (2) having completely removed the insulation jacket (3) is moved further downward in the course of passing the induction part I (10A) and II (10B), the conductor portion (4) of the telephone line is inserted into the subscriber line insertion slot (11). As a result, the conductor 4 is connected to the connection terminal 1 while being deformed by a certain amount (20-40%) according to its size, but an insertion slot having a wide range of telephone line conductors corresponding to 0.4-1.0 mm In order to accommodate this, the existing IDC method is impossible.

However, the theoretical basis for the possibility of accepting all telephone lines having a conductor diameter of 0.4-1.0 mm with one insertion slot is given by using the force-strain curve of FIG.

4 is a diagram showing a force-strain curve at an IDC connection terminal.

In FIG. 4, the X axis represents the amount of increase in the insertion slot and the amount of deformation of the conductor in the conductor connection process. The force in the insertion process is shown in the Y axis. In addition, the straight line shown in the drawing shows the increase of the insertion force with the increase of the insertion slot spacing during the insertion of the conductor, and the curved portion shows the amount of conductor deformation due to the decrease of the thickness of the conductor during the connection process.

Here, the connection terminal deforms in the elastic region, so that the spacing of the insertion slots increases linearly, whereas the deformation amount of the conductor appears in a curved form because the conductor deforms plastically.

In particular, the curved line in the form of a solid line indicates the optimal conductor strain. In general, the conductor is deformed in a certain amount in the process of being inserted into the insertion slot of the IDC connection terminal, it is known that the deformation of the conductor in the range of about 20-40% can maintain the optimum connection state. The reason for this is that if the conductor is less than 20% deformed, the gastight connection, which is an advantage of the IDC type terminal, is not achieved, and if the conductor is deformed more than 40%, the cut point is easily caused by external mechanical shocks. Because it happens often.

Referring to the contents of FIG. 4 in more detail as follows.

The straight line A represents the degree of deformation when the conductor is inserted into the insertion slot with a minimum slot spacing of 0.5 mm. In this case, the straight line A rises abruptly and only meets the solid curve showing the optimum amount of deformation for the conductor diameters of 0.9 and 1.0 mm, so that the slot can accept only telephone lines with conductor diameters of 0.9 and 1.0 mm. have.

The straight line B has a 0.3 mm initial slot spacing and the slope is slightly reduced compared to the straight line A, but can accommodate only conductors in the range of 0.65-1.0 mm. In particular, the straight line slope decreases rapidly as the initial spacing of the slots decreases. The force-strain curve of Fig. 3 theoretically suggests that when the initial spacing of the slots is less than 0.1 mm (straight lines C, D), all conductors of 0.4-1.0 mm can be accommodated.

However, when the insert slot is manufactured by the shearing method using the press mold which is generally used, the slot spacing cannot be reduced to less than 0.3 mm in the process.

In order to solve this problem, the following method was used in the present invention.

Referring to FIGS. 1 and 2, first, the gap between the insertion slots is made about 0.3 mm by the shearing method using a press die, and then the conductor is press-forged again by inserting the bottom part. made.

In the above state, the insertion slot having a gap of about 0.3 mm is reduced by 0.1 mm or less by the forging study 12. As shown in FIG. 3, an insertion slot 11 capable of accommodating all conductors of 0.4-1.0 mm was manufactured.

When the telephone line is inserted into and connected to the insertion slot 11 as described above, the subscriber side beam 13 has a strong spring force to continuously press the conductor, and the telephone line forms a gastight connection for a long time. In addition, since the thickness of the insertion slot 11 is reduced, only a small force is required in the connecting process, thereby greatly improving field workability.

Another problem that arises in accommodating a wide range of conductors (0.4-1.0 mm) is that the deformation of the beam 13 is larger than that of the conventional IDC connection terminal. The stress concentration part 15 under stress is formed. If the plastically deformed wide stress concentration portion 15 is formed, permanent deformation occurs in the stress concentration portion 15, and the spring force of the beam 13 is reduced. As a result, the long-term reliability of the connection terminal cannot be guaranteed.

In this study, the length of the IDC type connection terminal was made as long as possible to minimize the stress generated during the connection process of the telephone line. However, if the length of the terminal is too long, the connection power to the telephone line is greatly reduced, so the connection terminal corresponding to the optimum terminal length of 2 to 4 times the terminal width is manufactured.

The area for accommodating the local telephone line only needs to accept the telephone line of 0.4-0.5mm diameter, so that the relevant telephone line can be perfectly connected even in the general IDC shape. The process of inserting such a local telephone line is similar to the process of inserting the subscriber-side telephone line described above. First, the main line telephone line is connected to the trunk line insertion slot 21 after the insulation jacket is torn off at the lead-in guide portion 20 for the trunk line. do.

At this time, the spacing of the insertion slot 21 is increased by a certain amount due to the insertion of the conductor, but the relative connection is maintained in the long term by the elastic spring force of the local beam 22. Although the conductor diameter of the trunk line is smaller than that of the subscriber line, the connection is small. Since a significant amount of stress occurs in the process, a simple coaxial stress distribution groove 23 is installed to disperse it.

In order to find out whether the conductor 4 of the telephone line 2 is perfectly connected to the connection terminal 1, the test plate 30 was made in this invention. In particular, the test plate 30 was restrained from the phenomenon that the crocodile clip attached to the test device to fall out during the test process as possible.

As described above, the IDC type connection terminal according to the present invention can completely remove the insulation sheath of the telephone line twice and minimize the stress concentration by perfecting the telephone line having a 0.4-1.0 mm conductor diameter with only one insertion slot. It can be connected securely, but there is an effect that it can be tested reliably.

Claims (4)

A telephone line connection terminal for connecting telephone lines at a final point among various cable connection points of subscriber communication lines from a telephone station to a subscriber, comprising: a subscriber side induction part having one side inclined to facilitate insertion of a subscriber line telephone line; A forging part having a thickness difference with the induction guide portion is formed below the induction guide portion, an insertion slot for connecting the telephone line conductor and the terminal at the same time as the insertion of the telephone line, and a stress for dispersing the stress generated by the connection of the telephone line conductor and the terminal. Subscriber side information consisting of distributed home; A trunk line insertion slot which extends in the other side of the subscriber side beam and contacts the telephone line conductor and the terminal at the same time as the insertion of the trunk line induction guide portion and the telephone line formed with a slope to facilitate the insertion of the local telephone line at the end thereof; A local side beam composed of a local side stress dispersion groove for dispersing stress generated by insertion of a main line telephone line; And a test plate positioned between the subscriber side report and the station side report to determine whether a telephone line is connected. The IDC connection terminal according to claim 1, wherein an interval between the insertion slots on the subscriber side is 0.1 mm or less to accommodate conductors having a diameter of 0.4-1.0 mm. The IDC type connecting terminal according to claim 1, wherein the length of the connecting terminal is formed 2 to 4 times the residual width. The IDC connection terminal according to claim 1, wherein the connection test plate is a test plate having an uneven shape.