JPH0831343B2 - Multi-pole cable plug connector - Google Patents

Abstract

A multipole cable plug connector 1 has a printed-circuit board (17) (if required) which is arranged in a plastic housing (2) as well as integral contact elements (18, 18') having in each case one insulation-piercing terminal contact (22) for cable connection, one printed-circuit board contact (25) and one plug contact part (26, 26'). In order to achieve a low production cost in a simple manner and to enable the contact elements to be fixed independently of the presence of the printed-circuit board, it is provided that in each case one blind hole (15), running in the insertion direction, is provided in a contact supporting part (9) consisting of insulating material, in order to accommodate the end part (14) of each cable core (6), that the insulation-piercing terminal contact (22) and the printed-circuit board contact (25) formed by two lugs (23, 24) like a fork-shaped spring are arranged transversely with respect to the insertion direction, and that the contact supporting part (9) has a matched recess (16) for accommodating the insulation-piercing terminal contact (22). <IMAGE>

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multipolar cable plug connector according to the preamble of claim 1.

[0002]

2. Description of the Related Art This type of cable plug connector is Va
Udeha-Elektro product, which is known in the art, in which the contact elements are an insulating coating cutting clamping contact, a conductor plate contact made as a brazing lug and a plug contact part made as a fork-shaped spring, respectively. Is located in.

In such a cable plug connector, the contact element can be manufactured as a simple stamped part in a cost-effective manner, but its assembly is very expensive. This means that the conductor plate connection must be brazed and the cable core must be pushed into the slit of the insulation cutting fastening contact through the additional required device, for example the web of the cover part to be pressed in. It will not happen. In particular, in mass-produced products such as plug-in connectors, costs including such high production costs are generally unacceptable.

The known cable plug-in connector can only be realized with a further conductor plate. This is because the contact element is mechanically fixed to the conductor plate by brazing of the brazing lug. Even in a relatively large number of applications that do not require an electrical circuit, the cable plug-in connector must be provided with a conductive plate or similar part to which the contact element can be fixed.

[0005]

SUMMARY OF THE INVENTION The object of the present invention is to improve the multipole cable plug-in connector according to the preamble of claim 1 in such a way that it is as simple and cost-effective as possible. To achieve a low manufacturing cost and to be able to fix the contact element inside with or without a conductor plate.

[0006]

This problem is solved according to the invention by means having the features of claim 1.

For the assembly of the cable plug-in connector, the end of the cable core is inserted into the blind hole and then the insulation-coated cutting-tightening contact of the contact element is fitted transversely to the insertion direction of the contact-bearing part. All you have to do is push it into the notch. In this case, the cable cores are automatically brought into contact with each other while being pushed into the slits of the insulation-coated cutting contact, and at the same time the fork-spring-like conductor plate contact is brought into contact with the associated connection point on the conductor plate. The spring-elastic strips of the conductor plate contacts then grip the conductor plates located between them, thereby fixing the conductor plates additionally and without additional expense.

Among the uses of the cable plug-in connection portion of the present invention, when the electric circuit and hence the conductor plate are not required, the conductor plate can be simply omitted. The contact element is supported on the contact support part. The contact element can thus be widely used in cable plug-in connectors with or without conductor plates.

Further advantageous configurations of the multipole cable plug-in connector according to the invention are set forth in the dependent claims.

According to the structure of the second aspect, the contact element can be manufactured as an integrated punched and bent part at a minimum manufacturing cost.

The projection according to claim 3 digs into the plastic of the contact-bearing part when the insulation-coated cutting-tightening contact is pushed into its associated notch, so that the contact element can be secured without extra expense. A semi-permanent immobile fit is guaranteed.

The contact-bearing part, to which the contact element is mounted, can be inserted into a prefabricated casing or can be subsequently surrounded by an injection-molded body. In the latter case, it is important that the injection molding material does not enter the contact chamber through the blind hole and the notch. This can be advantageously and simply realized by providing the lip packing according to claim 4, which lip packing is produced in the same working step when making the contact support part, for example in each notch of the bottom surface. Can be integrally formed laterally in the inlet area of the. Electrical circuits can only be connected in parallel to the integrated contact element.
In the part intended to connect the electrical structure part to the conductive path between the cable core and the associated plug-in contact part (series circuit), this means by means of claim 5 a plug-in contact part, The insulation coating cutting tightening contact and the conductor plate contact combined with it
It is possible simply with the same contact element that it is produced as two separate parts and that the plug-in contact parts are brazed to the brazing support points and are thereby also mechanically fixed. Therefore different connection types can be used in the field without additional costs.

On the other hand, the known cable plug-in connector cannot offer the above possibilities. This is because the plug-in contact part has to be kept in place due to the predetermined pole shape and the plug housing. Therefore, if both separate connections are separated, neither fixation (cantilevered part) nor insertion of one circuit or only one structural element is possible.

In the known construction of the cable plug connector,
The cover part on the insertion side is integrated with the plastic casing. Only one cable connection type is possible if the contact types are different (in the case of a plug-in connector for cables with protective conductors, for example the contact for the protective conductor connection is configured differently from the other contacts) Not. According to claim 6, since the cover part is constructed as a separate part, the casing and the cover part are rotatable relative to one another, so that more, eg four, square cover parts are provided. It is possible to select the cable connection type at the positions shifted by 90 degrees. The cable plug connection can thus be adapted to the needs of the individual case.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENT A multi-pole cable plug-in connector designed as a chevron plug-in connector, a cable-introducing connection for receiving a cable 4 with four cable cores 6 each protected by an insulating coating 5. It has an injection-molded plastic casing 2 with 3 and a contact area 7 of square cross section, which area 7 is closed on the instrument insertion side with a cover part 8. In the contact area 7 of the plastic housing 2 there is arranged a contact support part 9 of insulating material with a central tubular connection 10. For the fixing of the cover part 8, this cover part 8 has a tubular central part 1
1, which encloses the tubular connection 10 and, in the assembled state, is engaged with the annular locking ridge 12 in a corresponding annular locking groove 13 of the tubular connection 10. To meet.

In the area of the contact support part 9 on the cable connection side, the non-insulated end 14 of the cable core 6 is provided.
Is provided with a blind hole 15 for receiving
5, a slit-shaped notch 16 of the contact support portion 9 is machined in the lateral direction. Plastic casing 2
The contact area 7 of FIG. 1 is further provided with a conductor plate 17 with electrically conductive bars and with electrically and electro-optical structural parts not shown, which conductor plate 17 has a tubular connection of the contact support part 9. And the conductor plate 17 is supported on the end face of the tubular central part 11 of the cover part 8.

The contact elements 18, 18 'are stamped and bent parts. Depending on the intended use, the two contact elements 18 are constructed in one piece. The contact element is only suitable for the parallel connection of circuits or circuit components. The base section 19 of the contact element is provided with a fork-shaped spring bush 2 for inserting the insert pin of the insert connection of the device (not shown) into the plane containing the base section 19 through the hole 8'of the cover part 8.
6 continues. From the base section 19 the slit 2
An insulation-coated cutting clamping contact 22 with two legs 21 separated by 0 and a fork-spring-like conductor plate contact 25 consisting of two tongue-shaped strips 23, 24 are substantially perpendicular to the base section 19. It is installed on the left and right sides. One strip 23 is preferably formed by punching out from the other strip 24 and raising it outwards.

In the other two contact elements 18 ', respectively, the fork-shaped spring bush 26', the insulation-coated cutting clamping contact 22 and the conductor plate contact which is connected to it via a part of the base section 19 are provided. , Separate parts, and a circuit or a circuit component part can be inserted in series between these parts. The above-mentioned division is preferably carried out in a single working step during stamping, in which case the same parts can be used as in the case of an integral contact element. During assembly, first the end 14 of the cable core 6 is introduced into the associated blind hole 15 and then the insulation-cutting clamping contact 22 is pushed into the recess 16.
At this time, the insulation coating cutting tightening contact 22
Cut the insulation coating 5 of the cable core wire 6
To contact. The protrusion 27 or the groove on the side edge of the leg 21 digs into the side wall of the cutout 16 so that in a very simple manner the contact element 18 or the insulation-coated cutting contact of the contact element 18 ' 22 and conductor plate contact 25
A continuous and immobile bond of is obtained. At the same time, the conductor plate contact 25 is positioned during this inserting step. Strip 2
3, 24 in this case hold the associated edge of the conductor plate 17, fix it in its position and ensure that it contacts a given pad. The lip packing 28 at each inlet of the notch 16 prevents the injection molding material from entering the contact chamber 29 through the bag hole during injection molding.

When the one-piece contact element 18 is assembled, the fork-shaped spring bushing 26 is positioned exactly in the insertion direction in the correct position in accordance with the respective standard pole shape. Fork spring bush 2 with separate structure
6'is provided on the conductor plate 17 with a brazing contact, on which the fork-shaped spring bush is attached to its neck 3.
They are electrically connected by zero soldering and mechanically fixed at the same time.

In the construction with a one-piece contact element, the multipole cable plug-in connector according to the invention can also be used without a conductor plate. This is because the fork spring bush 26 is arranged in the contact support part 9 as a whole of the contact element 18.

Due to the two-part construction of the cover part 8 and the plastic casing 2, the shape of the contact poles or the pattern of the contacts is fixed, for example standardized, but the cover part and the casing are arranged relative to each other.
By rotating in degrees, it is possible to choose the type of connection with the four cables, which is perfectly suited to the individual case.

A center screw 31 passing through the plastic casing 2 and the tubular connection 10 and the cover part 8 allows an immovable connection with the instrument bayonet connection.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a cable plug-in connector.

FIG. 2 is a perspective view of one contact element.

FIG. 3 is a view showing a conventional contact element.

[Explanation of symbols]

 1 Cable Plug-in Connector 2 Plastic Casing 3 Cable Inlet Connection 4 Cable 5 Insulation 6 Cable Core 7 Contact Area 8 Cover 8 'Hole 9 Contact Support 10 Central Tubular Connection 11 Tubular Central 12 Locking Protrusion 13 Locking groove 14 End part 15 Blind hole 16 Notch 17 Conductor plate 18, 18 'Contact element 19 Base division 20 Slit 21 Leg 22 Insulating coating cutting tightening contact 23, 24 Strip 25 Conductor plate contact 26 Fork spring bush 27 Protrusion 28 Lip packing 29 Contact chamber

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Peter Kuhn Germany Kängen Unterdorfstraße 21

Claims (6)

[Claims] 1. A multi-pole cable plug-in connector, comprising:
Insulation-cutting tightening having a conductor plate arranged in a plastic casing and connected to a structural element and an integral contact element, each contact element being electrically conductively connected to an insulated cable core In a type having a contact and a conductor plate contact, and a plug-in contact portion extending in a plug-in direction for connecting to a contact portion of a corresponding device plug-in connection portion which is inserted through a hole in a cover portion. A contact supporting part (9) of insulating material is provided with a respective blind hole (15) extending in the direction of insertion for receiving the end (14) of each cable core (6). Cage and insulation coating clamping contact (22) and two strips (2)
3, 24) fork spring-shaped conductor plate contacts (25) are arranged transversely to the insertion direction and the contact support part (9) receives the cutting clamping contacts (22). A multi-pole cable plug-in connector, characterized in that it has a matching cutout (16). 2. A fork spring-shaped conductor plate contact (2
5. Cable plug connector according to claim 1, characterized in that one strip (23) of (5) is stamped from the other strip (24) and bent outwards. 3. Cutting fastening contact (22)
The leg (21) has a protrusion (27) on its outer edge, and the protrusions (27) of the legs (21) are notched (16).
The cable plug-in connector according to claim 1 or 2, wherein the cable plug has a larger width than the inner width. 4. A notch (16) according to claim 1, characterized in that each notch (16) has a lip-like packing (28) in contact with the cutting and clamping contact (22). The cable plug-in connector according to item 1. 5. Plug-in contact part (26, 26 ')
Are arranged laterally offset with respect to the conductor plate contact (25) and the cutting and clamping contact (22) connected thereto and the conductor plate (17) has a neck of the plug-in contact part (26, 26 '). A brazing contact is provided approximately on the extension of the part (30).
The cable plug-in connector according to any one of items 1 to 4. 6. The cable plug connector according to claim 1, wherein the cover part (8) is constructed as a separate part from the plastic casing (2). .