FI94577B - Protective pin connector for coupling or separating strips - Google Patents

Description

1 94577

Protective plug for connection or isolation strips

The invention relates to a protective plug for connection or disconnection strips for telecommunication technology, which is provided with a series earth according to the preamble of claim 1.

A protective plug of this type is known from P 37 09 875.6-3 * 1. This protective plug consists of two body halves inside which a protective hybrid with two parallel conductor tracks is placed. The conductor tracks are connected by conductor contacts to the conductors a-b or a'-b 'of the communication conductors. It further has adjacent surge conductors held between the protective hybrid conductor tracks and the ground plate. The ground plate located below the shield hybrid has two flexible plate strips for holding over voltage conductors, which are bent to form U-shaped holders transverse to the longitudinal direction of the ground plate.

Two additional strip strips are required to connect the overhead line to ground. These plate strips each have a branch spaced from the conductor track. The disadvantage of this protective plug is that because the device has two adjacent over-voltage conductors and a ground plate with several plate strips, the width and thickness of the body are considerably increased. When inserting the protective plug into the connection or disconnect strip, the arrangement side of the strip is covered at the same time, so that in order to connect and remove (arrange) the cable conductors, the protective plug must first be pulled out. Additional disadvantage. consists of the body of the protective plug being made in two parts.

The object of the invention is to provide a protective plug of this type, the body of which is made as small as possible and which, when used, must have access to the arrangement side of the connection or isolation strip;

The solution to this problem is clear from the features of claim 1. The over-voltage conductors are only connected to the series earth after the protective plug has been placed in the connection or isolation strip, which provides a ground connection. According to the invention, the series earth is placed outside the body of the protective plug, which makes the body considerably small. By reducing the protective contact body, the cable conductors connected to the arrangement side of the connection or isolation strips are also accessible after inserting the protective plug, so that arrangements, for example removal of pre-connected cable conductors, are also possible without removing the protective plug. In addition, the protective contact is formed from a one-piece body, so that it is possible to manufacture the protective contact at a much lower cost.

Further preferred embodiments of the invention will become apparent from the subclaims. In this case, reference is made in particular to the embodiments according to claims 6, 7 and 8, in which case the connection plates of the series earth to which the surge conductors are connected are slightly shorter.

The invention will be explained in more detail below with the aid of several embodiments of a protective contact. The figures show:

Fig. 1 is a longitudinal section of a protective plug inserted in the connection strip in the first embodiment,

Figure 2 is a main view of the protective plug,

Figure 3 is a cross-section along the line III-III,

Figure 4 is a cross-section along the line III-III with a series ground, 3 94577

Fig. 5 is a perspective view of a protective plug in another embodiment with a series ground, a connection strip and a mounting bracket,

Fig. 6 is a longitudinal section of a protective plug inserted in the connection strip in another embodiment,

Figure 7 is a rear view of the protective plug,

Figure 8 is a longitudinal section of the protective plug,

Figure 9 is a main view of the protective plug,

Figure 10 is a cross-section along the line X-X,

Figure 11 is a cross-sectional view taken along line XI-XI;

Fig. 12 is a longitudinal section of a protective plug in a third embodiment,

Fig. 13 is a rear view of a series grounding device with a protective plug,! Figure 14 is a longitudinal section of the protective plug,

Figure 15 is a main view of the protective plug,

Figure 16 is a cross-sectional view taken along line XVI-XVI;

Fig. 17 shows a main view of the plug in the fourth embodiment and

Figure 18 is a longitudinal section along the line XVIII-XVIII.

The protective plug 1 consists of a one-piece plastic body 2, whereby the front side 10 of the body 2 is made open. This front page 10 is closed by inserting the connecting plate 11 of the series earth 5 into the inlet channel 48 or the plate part 50, as will be explained in more detail later.

Inside the interior 12 of the body 2 are placed two strip-like conductor contacts 13,14 of metal material, the ends 15,16 of which are led out of the body 2 of the protective plug 1 and fixed by holding strips 49 to the body 2. These ends 15,16 form a body-shaped with the plastic strip 17 the insertion part 18 of the protective plug 1. The plastic strip 17 then has a locking cam 43.

The parts of the conductor contacts 13,14 located in the body 1 are detached in the guide grooves 21,22 and are used for connecting the overvoltage conductors 3. The two parts of the conductor contacts 13,14 placed in the body 1 are made different.

The conductor contact 13 is made U-shaped and the conductor contact 14 is S-shaped, whereby both bent ends 19,20 of the conductor contacts 13,14 are placed in a guide groove 23 running parallel between the guide grooves 21,22.

In addition, both ends 19,20 of the conductor contacts 13, 14 are bent to form short-circuiting loops 25, 26 at right angles to the open front side 10. The ends of the shorting bars 25,26 engage the insertion channel 48 in the rest position.

The parts of the conductor contacts 13,14 placed in the body 1 are resiliently prestressed so that they are only retracted after the voltage conductors 3 have been placed in the guide grooves 21, 22 and 23.

The over-voltage conductors 3 are placed on the protective plugs 1 from the open front side 10 and are flexibly connected to the conductor contacts 13, 14 and the melting pill 30 ·· between the conductor contacts 3 and the overvoltage conductors 3 by a flexible installation.

On the second pole side 28, the overvoltage conductor 3 in the first embodiment is held back by flexible locking hooks 6,7 placed on the longitudinal sides 8 of the body, thus securing the protective plug 1 to the body 2. The ends 32 of the locking hooks 6,7 are directed towards the longitudinal axis 9 of the body 2.

In another embodiment, as shown in Figures 5-11, the locking hooks 6, 7 are arranged in the middle of the longitudinal shaft 9, on which a central strip 33 is further arranged. The central strip 33 has two mounting edges 3 ** over the voltage for fixing the conductor 3 on both sides and will be explained in more detail later. The overvoltage conductors 3 are thus mutually held by the locking hooks 6, 7 and the fastening edges 34 of the central strip 33 in the body 2 of the protective plug 1.

In the third embodiment (Figs. 12-16), the surge conductors 3 are held by the additional strips 24 of the body 2. The additional strips 24 engage the open front sides 10, whereby there is always two additional strips 24 for each of the surge conductors 3.

In the fourth embodiment (Figs. 17 and 18), the surge conductors 3 are held in the body 2 by a plate portion 50 having a U-shaped cross-section with rectangular bent side walls 51. The side walls 51 have openings 52 into which locking hooks 54 are locked on both narrow sides 45 of the body 2. thus securing the plate part 50 to the body 2. The plate part 50 closes the open front side 10 of the protective plug 1. Against the inner side 55 of the plate part 50 are the terminal sides 28 of the overvoltage conductors 3, the outer side 55 of the plate part 50 is turned towards the insertion channel 48. the inner side 55 is in addition a short circuit -: * as a contact surface of the brackets 25.26.

6,94577

The structure and placement of the protective plug 1 in the connection or isolation strip 4 will be explained in more detail below.

According to Fig. 5, a connection or disconnect strip 4 made of plastic is inserted into the lugs 37 of the metal mounting bracket 36 connected to the ground conductor and locked therein. Such a connecting or separating strip to be locked to the mounting bracket 36 consists of a lower part and an upper part attached thereto. In the connection or disconnection strip 4, on one side (cable side) the cable conductors 38 from the subscriber and on the other side (arrangement side) the arrangement conductors 39 leading to the communication equipment are connected to two-row cut-out connector contacts 40, 41. Second row cut-off connector the contact piece 40 is connected via the cable contact piece 47 to the second row cut-connector contact piece 41.

The metal series earth 5 is placed parallel to the connection or isolation strip 4. The end faces of the series earth 5 have two cable contact pieces 57 which engage the lugs 37 of the mounting bracket 36 and thus electrically connect the series ground 5 to the mounting bracket 36.

The series grounder 5 has a plurality of connection plates 11 with gaps 42 between them. There is one connection plate 11 for each double conductor (conductor a-b).

If overvoltage protection is required for the cable conductor 38 connected to the connection or isolation strip 4, then for each double conductor a protective plug 1 is inserted into the strip 4 between the two rows of cutting-connector contacts 40, 41 in the cable contact 47. The locking cam 43 of the insert 1 of the protective plug 1 is locked. The cable contacts 47 engage the conductor contact ends 15, 16 so that the cable conductors 38, 39 are electrically connected to the conductor contacts 13, 14. Each one of the connection strips 11 of the series earth 5 engages 7 94577 in the insertion channel 48 of one protective plug 1.

In the first embodiment of the protective plug 1 (Figs. 1-4), the connecting plates 11 press the hooks 6 »7 holding the surge conductors 3 aside - as shown in Fig. 4 - and contact them from the pole side 28 of the surge conductors 3, which are at the same time connected to ground. The overvoltage conductors 3 are pressed via the flexible conductor contact pieces 13,14 against the connection plates 11 of the series earth 5, whereby a secure contact is established between the connection plates 11 and the terminal sides 28 of the overvoltage conductors 3. When the protective plug 1 is pulled out of the connection or disconnection strip 4, the locking hooks 6, 7 again engage behind the pole halves 28 of the surge conductors 3 and reattach them to the body 2 of the protective plug 1.

In another embodiment of the protective plug 1 (Figures 5-11), the connecting plates 11 always cover half of the front side 10 of the protective plug 1, so that the gap 42 between the connecting plates 11 runs in the middle of the longitudinal axis 9 of the protective plug 1 and receives locking hooks 6, 7 and center strip 33. in addition, two additional guide strips 44 for the front side 10 for the narrow sides 45 are better arranged.

In the third embodiment (Figs. 12-16), the connecting plates 11 are pressed when the protective plug 1 is inserted into the insertion channel 48 under the additional strip 24, as shown in Fig. 12. To facilitate insertion, the connecting strips 11 are slightly bent from the front side 46 in this embodiment.

In the fourth embodiment (Figs. 17 and 18), the connection strips 11 are shortened in contrast to the embodiments described above, because in this embodiment the connection strips 11 only need to be brought into electrical contact with the plate part 50. In order to guide the connecting plate 11, the longitudinal sides 8 of the body 2 have: a guide angle 53, so that in the insertion channel 48 the connecting plate 11 of the serial s 94577 dooder 5 is between the guide angles 53 and the plate part 50.

If several protective plugs 1 are connected side by side on the longitudinal sides, then one protective plug strip 31 is formed.

The overvoltage case is then briefly explained. If an overvoltage occurs, an overvoltage or overcurrent is conducted along the cable conductors 38,39, the cut-connector contacts 40.41, the cable contact 47, the conductor contacts 13, 14, the melting pill 30 to the pole side 29 of the overvoltage conductor 3.

The overvoltage conductor 3 filled with noble gas ignites, whereby the overvoltage is applied to the second terminal 28 of the overvoltage conductor 3, which is electrically connected to the series earth 5. The overvoltage is thus conducted through a cable contact 41 and a series ground 5 to a mounting bracket 36 connected to a ground conductor.

The heat generated as the overvoltage conductor 3 continues to ignite melts the melting pill 30, whereby the flexible short-circuit bracket 25, 26 contacts the connecting plate 11 of the series earth 5 or the plate part 50 connected to the series earth 5 and the overvoltage 3 short-circuits (Fail-Safe procedure). Thus, damage to the protective plug 1 due to overheating is prevented.

• ·

Claims (10)

1. Grounded plug for a coupling or switching strip (4) provided with collective ground (5) in the telecommunication technology, consisting of a housing (2) with surge arresters (3) and conductor contacts (13, 14), characterized in that the housing ( 2) has one out of one pole side (28) of the surge arresters (3) 10-pin insertion channel (48) and that the matching ground (5) is provided with a connection plate (11) which engages the ground of the surge arresters (3). in the plug channel (48). An earthed plug according to claim 1, characterized in that the conductor contacts (13, 14) have short-circuits (25, 26) which, after melting of a melting plate (30), engage the plug channel (48). Grounded plug according to claim 1, characterized in that each surge arrester (3) is secured by means of two resilient hooks (6, 7) with clamping in the housing (2) to the grounded plug (1). 94577 11 Grounded plug according to claim 3, characterized in that the resilient hooks (6, 7) have been placed in the longitudinal sides (8) of the housing of the plug (1). Grounded plug according to claim 3, characterized in that the resilient hooks (6, 7) are positioned opposite each other on the longitudinal axis (9) of the plug. 6. An earthed plug according to claim 1, characterized in that the housing (2) has along the pole sides (28) of the surge arresters (3) a sheet member (50) against which the pole sides (28) of the surge arresters (3) lie. 7. An earthed plug as claimed in claims 1 and 5, characterized in that the sheet metal (50) has openings (52) in which the reading hooks (54) located in the short sides (45) of the housing (2) engage. Grounded plug according to claims 1 and 5, characterized in that the inside (55) of the sheet metal (50) functions as a contact surface for short-circuit rods (25, 26) and for the pole sides (28) of the surge arresters (3) and the outside (56) of the sheet metal (50) serves as the contact surface for the connection sheet (11) of the assembly earth (5). 25 An earthed plug according to claim 1, characterized in that the surge arresters (3) have been placed in a row on the longitudinal axis (9) of the housing (2). An earthed plug according to claim 1, characterized in that several grounded plugs (1) are adjacent to each other. . as a grounded plug strip (31).