JPS6057190B2 - Connection device for cables - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a connection device for a multi-core signal cable having a number of signal cores, each of which is insulated.

In modern electronics applications, such as computers and information technology, signal transmission by means of multi-core signal cables is now used, which consists of a number of insulated signal conductors wrapped in a common jacket. It's more like a bunch.

To connect such signal cables to contact blocks, the ends of these cables are separated and the individual wires are connected to the contact material of the corresponding contact block. However, the main drawback of this method is that a portion of the wire must be adjusted for each contact and its corresponding position in the contact block. This means that each signal conductor is treated separately, i.e. stripped, cut to size and connected, making the process of connecting such contact blocks to signal cables time consuming. This was done without any automation. The object of the invention is to provide a connecting device for such multicore signal cables, which allows a fast, easy and partially automated connecting operation.

To that end, according to the invention, a connecting device for a cable with a plurality of conductors separately insulated by an insulator has two arms spaced apart, The opposing inner sides of the two arms have conductor engaging portions arranged at intervals narrower than the thickness of the conductor of the cable, and the spacing gradually increases from the distance between the conductor engaging portions. a plurality of contact members each having a cutting blade attached thereto; and a main body portion supporting the contact member including the conductor engaging portion and the cutting blade on the conductor engaging portion side; The conductor engaging portion and the cutting blade protrude from one surface of the main body portion, and the main body portion supports the contact member with the cutting blade open, and is arranged to face the one surface of the main body portion. a hole for passing the cable, the hole extending from the top surface to the bottom surface, and extending from the joint between the hole and the bottom surface to one of the side surfaces; An extending groove and a receiving hole for accommodating the cutting blade of the contact member when the one surface and the bottom surface contact or come close to each other are formed in the main body portion, and the groove and the receiving hole A connecting device is provided, comprising a locking member that holds lid portions arranged to intersect with each other and the bottom surface of the lid portion on the one side of the main body portion in contact with or in close proximity to each other. Ru. To assemble such a connection device and form a proper electrical connection, the cores, or conductors, of a separately insulated signal cable are threaded through the hole from the top of the lid part, bent 900° on the underside, and placed in the groove. This groove can partially fasten these core wires. From now on, the lid part will be pressed against the main body part and locked.
Finally, the protruding ends of the cable are cut off on both sides.
These can be performed as a series of operations. According to the present invention, effective use is made of the piercing contact material described above. Such piercing contact material has a cutting blade at the end;
The cutting blade is capable of cutting through the insulation sheath of the cable, after which the core is kept in contact with the contact material. To ensure the connection operation, double or contact members are used, each having two pairs of cutting blades aligned with each other. The use of such bifurcated contacts in multiple connection devices having a body part and a lid part has previously been used for so-called flat cables in which a number of insulated core wires are mounted parallel to each other on a substrate. It had been proposed.

For such connection devices, the cables are generally placed on top of the contact casing, and then the lid is pressed down so that the pierce-in contact material cuts into the substrate and the insulation of each cable. No such system has hitherto been proposed for a type of signal cable in which each insulated conductor forms a spatial tunnel. According to the present invention, it is no longer necessary to connect each signal core wire separately.

The only operation that must be performed separately for each signal conductor is to insert it into the corresponding individual hole in the lid member and bend it into the groove. The next task is common to all signal cores, and is to close the lid member and trim the signal cores. Another advantage obtained by the connecting device according to the invention is that the 900 bends of each conductor on the underside of the lid member result in a better tensile strength.

If this conductor is suddenly subjected to tension, this force is mostly absorbed by this 900 bend, so that the risk of damage or breakage at the contacts is limited to a minimum. In the connecting device according to the invention it is also possible to arrange the contact materials in a row, but
In particular, multiple rows of contact material are contemplated.

In such embodiments, the body portion comprises several parallel rows of contacts, such that the signal conductor that contacts the core pierce contacts of one row contacts the core pierce contacts of another. The bifurcated core piercing contacts of each row are offset with respect to those of the other rows so that they can be guided laterally to one side of the body portion without any problems. And the lid part is
On its lower side, it has a row of receiving holes corresponding to each row of bifurcated core piercing contacts, through which the grooves reach said one side. It also has a row of holes laterally offset with respect to these receiving holes extending from the top surface of the lid portion to the bottom surface and meeting each corresponding groove at the bottom surface. These arrangements allow the invention to bring several adjacent rows of conductors into contact in a similar manner, which is as fast and easy as in a single row. In an advantageous embodiment, the body parts are arranged according to a square matrix using internal partitions and are subdivided into essentially square channels from the top side to the bottom side. A contact member is provided within each passageway, and above the contact member is a bifurcated core piercing contact member. Another possibility is, for example, for the lower part of the contact member to be used as a contact plug, with the lower part protruding from the lower side of the main body member. An embodiment of the connecting device according to the invention with two rows of contact members is as follows.

The body member has two parallel rows of passages, each passage being provided with a contact member in a corresponding manner. The rows of receiving holes in the lid portion corresponding to these rows are then laterally displaced inward. During connection, the two rows of conductors are bent away from each other and towards the two sides of the lid part on the underside of the lid part. An advantageous embodiment of a connecting device with three rows of contact members can be as follows.

The body portion has three parallel rows of passages, each passage having a contact member disposed therein. The two outer rows of bifurcated core piercing contact materials are located laterally in line with each other, and the two outer rows of bifurcated core piercing contact materials are vertically offset by half a pitch with respect to those of both outer rows. ing. In the lid part, the rows of holes corresponding to the two outer rows are aligned in a laterally inner position, while the row of holes corresponding to the central row is beyond one of the rows of holes to the outside. It is shifted laterally by up to 50 degrees, and also shifted by half a pitch in the longitudinal direction. The third row of signal conductors is thus brought into contact as efficiently as in the case of the other two rows, without the risk of conductors of a different row making unnecessary contact with contact members of other rows. This is guaranteed. The necessarily asymmetrical arrangement on the upper side of the lid part is converted into a symmetrical position on the body part, and on the lower side of the body part the three rows of contact materials are regularly arranged next to each other. This is of course necessary for standardization. Regarding the connection device of four rows of contact material, the following is proposed according to the invention.

The main body portion has four parallel rows of passages, each of which has a contact member disposed therein. The two even rows of bifurcated contacts are laterally aligned, as are the two odd rows of bifurcated contacts. On the other hand, the bifurcated contact members of the two even-numbered rows are offset by half a pitch in the longitudinal direction with respect to those of the two odd-numbered rows. As in the embodiment for the three rows, the advantages of the connecting device according to the invention are fully preserved, with the result that once again these four rows of contact materials form a regular arrangement next to each other on the underside of the body part. It is possible to keep it. In such an embodiment having three or four rows of contact members, it is preferable that the main body portion is subdivided according to a rectangular matrix to form rectangular grooves, and in this case, the following contact members are Preferably used. That is, the contact member is a conductor piece punched out of metal, with a female plug provided at one end and a bifurcated plug at the other end. A piercing contact material is formed. The contact member is asymmetrical with respect to its longitudinal axis, and by being rotated 180 degrees about this axis, it is common to both one row and a row offset by half a pitch from this row. It can be used for. Referring now to the accompanying drawings, FIG. 1 shows two connecting devices according to the invention.

They each have a body part 1 and a lid part 2. The body portion 1 has side surfaces 3 and 4 and front and rear surfaces 5 and 6. This body part 1 is internally subdivided into rectangular passages 9 by longitudinal partitions 7 and transverse lateral partitions 8 . These passages 9 each accommodate contact members 10a110b and 10c. These contact members 10a110b and 10c have contact members 11a and 11b divided into two parts on their upper parts.
and 11c. Referring also to FIG. 2, the contact members 11a, 11b and 11c each have two spaced arms 100a, 100c (one arm is hidden from view by the lid). ). A cutting blade 12 is formed at the upper end of the opposing sides 102a, 102c inside each of the two arms 100a, 100c. Furthermore, the inwardly facing sides 102a, 102c are provided with conductor engaging portions 104a, 104c that are continuous with the cutting blade 12. The distance between the cutting blades 12 gradually increases from the distance between the conductor engaging portions 104a and 104c toward the outside. The distance between the conductor engaging portions 104a and 104c is narrower than the thickness of the core wire of the cable to be arranged. With this configuration, the contact materials 11a, 11b, 1
1c is pressed from the outside in the radial direction of the cable toward its center axis, the cutting blade 12 first cuts the insulation coating of the cable, and when pressed further, the core wire 21 of the cable
02a, 102c between the conductor engaging portions 104a, 104c. In this state, the core wire of the cable and the conductor engaging portions 104a, 104c are electrically connected.
The lid part 2 has receiving holes 13a and 13c on its bottom surface, which accommodate the cutting blades 12 of the bifurcated contact members 11a and 11c.

Furthermore, the lid part 2 has holes 14a, 14c, which extend from the top surface 12 to the bottom surface 110 of the contact lid part 2, and which grooves 1
5a and 15c and the bottom surface 110 and the joint parts 118a and 1
It is joined at 18c. The above symbols A, b and c indicate whether the part in question cooperates with one of the rows of contact members;
Or something that shows belonging. As shown in FIG. 1, the bifurcated contact material 11b in the center row of contact members is divided into two bifurcated contact materials 11a in the two outer rows.
and 11c, they are shifted by half a pitch (one pitch is the distance between the centers of the contact points in one array).

In reality, the exact same means used for the two outer rows, or the same means used for the center row, are reversed by 180 degrees so that they are offset by half a pitch. Corresponding to the two outer rows of bifurcated contact materials 11a and 11c are rows of holes 14a and 14c in the lid part 2, which, as shown in FIGS. 1 and 3, It is offset inward from the column. The grooves 15a and 15c in the bottom surface of the lid part 2 run from the set of holes towards the sides 16 and 17 of the lid part 2, thereby making the receiving hole 1
3a and 13c. In this way, hole 1
The signal conductors guided by 4a and 14c are bent towards the sides 16 and 17 through the grooves 15a and 15c without coming into contact with unwanted contact members. Each core wire 21
The operation of the cable in these holes, consisting of the insulation sheathing 22 and the insulation sheathing 22, is illustrated in FIG. The cutting blades 12 of the separate contact members 11a and 11c penetrate the insulation coating, and the core wire becomes electrically connected to the contact member when the lid portion 2 is closed. The rows of holes 14b corresponding to the rows of the bifurcated contact material 11b are shifted in the lateral direction (in the vertical direction in FIG.
It is designed to be placed outside of 4c. As shown in FIG. 3, the core wire guided by these holes 14b is inserted into the groove 1
It is bent into 5b. As shown in FIG. 3, the core wire in question is guided without coming into contact with the contact materials of the two other rows. Furthermore, the lid part 2 is provided with chewing cams 18 on its sides 16 and 17, which are connected to the sides 16 and 17 of the body part 1.
and 4 into the slot 20 of the snap bracket 19 attached thereto.

This locking cam 18 and snap bracket 19 constitute a typical locking member. As shown in FIG. 2, the contact members 10a and 10c have a cutting blade 12 formed at the upper end thereof, and a conductor engaging portion 1 below the cutting blade 12.
04a and 104c are provided.

The contact members 10a and 10c are supported by the main body portion 1 at their lower sides, that is, at the conductor engaging portions 104a and 104c. For assembly, the insulated core wires of the signal cable are inserted into the holes 14a, 14b, 14c of the lid part 2, bent and fastened in the corresponding grooves 15a, 15b, 15c, followed by applying pressure to the lid part 2. 2 into the main body part 1,
This is done by a punching cam 18 and a snap bracket 19.

After this, the ends of the cable protruding from the sides 16, 17 are cut off. These can be performed through a series of operations. In this way a good electrical connection is obtained, for example a contact device with a female plug on the underside can be used as a further connection. An embodiment of the connecting device will be described on the basis of FIG. The three rows are alternately offset by half a pitch with respect to the adjacent rows. In principle, such an embodiment could be extended to a four-row embodiment, in which case the connecting device would be enlarged to have four rows of square passages, and four rows of regularly arranged contact members would form the main body. Prepared in a member. The contact members of the fourth row alternate with the contact members of the third row, and the contact members of the fourth and second rows are laterally aligned, as are the contact members of the first and third rows. are lined up. This is evident in FIG. 4 by the position of the receiving holes 13b in the lid portion, which form receiving holes for receiving four rows of bifurcated contact materials. This four-row embodiment is in fact an extension of the three-row embodiment, in which case in the lid part the rows of holes 14b and 14b are replaced by corresponding receiving holes 13b.
and 13d, this is the hole 14a.
and 14c are offset with respect to receiving holes 13a and 13c. In this way, a similar configuration is again made, in this case grooves 15a, 15b, 15c and 15d.
are guided from the mouths of holes 14a, 14b, 14c and 14d and reach one side via only the corresponding receiving holes 13a, 13b, 13c and 13d. A good contact is obtained by inserting it into the hole in the row, bending it, clipping it into the groove on the underside of the lid part and then applying pressure on the lid part to snap it into the body part 7. Furthermore, FIG. 1 shows two covers between which the parallel contacts can be fastened and assembled into a larger unit. Each of these covers has a front surface 23
, 24, and the tang has a thread 25 corresponding to a fitting cam 26 provided on the side surface of the main body portion of the connecting device. Furthermore, the two front surfaces have locating ribs 27, which facilitate handling and positioning of the assembled holder. Each cover has an inwardly projecting narrow lower edge 28 and corresponding vertical side edges 29 and 30 which flare into side edges 31 and 32 on the upper side. The supporting edges formed by these constitute supporting surfaces 33, 34 for the connecting devices arranged there. On the upper side, the widened side edges 31 and 32 are followed by similarly wide beveled edges 35 and 36, the beveled edge 35 being longer than the beveled edge 36. On the shorter beveled edge 36 there is a half-tube-shaped projection 37 for holding the signal cable connected to the two connecting devices when the two connecting devices are incorporated into the two covers. It is something.
These half-tubes can be locked to each other in an effective manner, either by external auxiliary means or by locking cams (not shown). Also,
The second locking means of both covers are then provided on the underside of the long beveled edge 35, one cover having a locking cam 38 and the other cover having a corresponding locking slot 39. There is. The embodiment shown in FIG. 1 implies the assembly of two connecting devices in parallel, each having three rows of contact material.

However, embodiments are also possible in which two or more connecting devices are arranged next to each other. Furthermore, the invention is not limited to the above-described block-shaped connecting device in which the body portion exhibits a regular matrix pattern.

According to the present invention, the device can also be made cylindrical,
For example, two rows of contact material arranged in a cylindrical manner are arranged and displaced concentrically with respect to each other on the cylindrical body. Numerous changes and modifications will be apparent to those skilled in the art armed with the above knowledge.

[Brief explanation of drawings]

1 is a perspective open view of a device including a connecting device according to the invention; FIG. FIG. 2 shows an enlarged detail of one of the connecting devices according to the invention. FIG. 3 is a schematic diagram of a lid portion of one of the connecting devices of FIG. 1; FIG. 4 is a schematic diagram similar to FIG. 3 of another embodiment of the contact cover. 1...Body part, 2...
・Lid part, 10a, 10b, 10c...Contact member, 11a, 11b, 11c...Contact material, 12
...cutting blade, 13a, 13b, 13c...
Receiving hole, 14... Hole, 15... Groove, 16, 17
...Side surface of lid portion 2, 21... Core wire, 2
2... Insulating coating, 100a... Arm, 102... Opposing conductor engaging portion inside arm 100a, 108... Main body portion 1 One side, 110...Bottom surface of lid part 2, 112...
. . . Top surface of lid portion 2, 118a . . . Joint portion between hole 14a and bottom surface 110.

Claims (1)

Claims: 1. A connecting device for a cable having a plurality of conductors separately insulated by an insulator, having two arms spaced apart, A cutting blade whose inner opposing sides include conductor engaging portions arranged at intervals narrower than the thickness of the conductor of the cable, and a cutting blade whose spacing gradually increases from the distance between the conductor engaging portions. a main body portion supporting the contact member including the conductor engaging portion and the cutting blade on the conductor engaging portion side, the main body portion having one side; a main body part from which the conductor engaging part and the cutting blade protrude and support the contact member in a state where the cutting blade is open; a bottom face disposed to face the one surface of the main body part; a hole for passing the cable through, the hole extending from the top surface to the bottom surface, and a groove extending from a joint between the hole and the bottom surface to one of the side surfaces; When the one surface of the main body portion and the bottom surface contact or come close to each other,
A receiving hole for accommodating the cutting blade of the contact member is formed, a lid portion in which the groove and the receiving hole are arranged to intersect with each other, and a lid portion that accommodates the cutting blade of the contact member; A connection device characterized by comprising a locking member that maintains the bottom surface in contact with or in close proximity to the bottom surface. 2. A plurality of rows of the contact members are installed in parallel to each other in the main body portion, and the conductor engaged with each contact member of the row contacts the contact member of another row. The receiving holes of the lid portion are arranged in a row corresponding to the row of contact members so as to extend laterally on one side of the main body portion without being disposed relative to the other row of contact members. It is located. A connecting device according to claim 1. 3. the body portion is divided by an inner partition into substantially rectangular passageways, the passageways being arranged according to a rectangular matrix, and each of the contact members being disposed within a respective passageway; has been done. A connecting device according to claim 2. 4. A connecting device according to claim 1, 2 or 3, wherein each of the contact members has connector means at an end remote from the cutting blade. 5. The connecting device according to claim 4, wherein the connector means is a female plug. 6. A contact member is disposed in two juxtaposed rows of passages in the body portion, and a corresponding row of holes in the lid portion is disposed laterally inwardly with respect to the rows of passages. A connecting device according to claim 2, 3, 4, or 5. 7. Three juxtaposed rows of contact members are installed in the body portion, and the conductor engaging portions of the two outer rows of the contact member rows are laterally aligned, and the conductor engaging portions of the two outer rows of the contact member rows are laterally aligned; The conductor-engaging portions of the conductor-engaging portions of the outer two rows are arranged to be shifted from the conductor-engaging portions of the two outer rows by half the pitch of the contact members in the longitudinal direction; The rows of holes in the lid portion corresponding to the mating portions are arranged laterally inward and in a straight line, and the holes corresponding to the middle row are in line with the holes corresponding to the two outer rows. They are located laterally outside one of the rows and are offset longitudinally by half the pitch of the contacts. A connecting device according to claim 2, 3, 4, or 5. 8. The body portion has four juxtaposed rows of contact members, two even-numbered rows of conductor-engaging portions and two odd-numbered rows of conductor-engaging portions.
The two rows of conductor-engaging portions are aligned laterally, and the conductor-engaging portions of the two even-numbered rows extend longitudinally of the contact member relative to the conductor-engaging portions of the odd-numbered rows. It's off by half a pitch. A connecting device according to claim 2, 3, 4, or 5. 9. The locking member extends upwardly from a protrusion projecting from a side surface of the lid portion and from a side surface of the main body portion. It consists of a snap bracket with a slot. A connection device according to any one of claims 1 to 8.