DE2050758A1 - Contact sleeve and cable lug for electrical connectors - Google Patents

Description

MÖNCHEN 5 1 5 OCT TO PATENT LAWYERS MO! LPBSTB 3 «' ^{dl ϋΛ} ''

DR -IMr, .FlMCKE MULLERSTR.31

Folder 8532

Description of the patent application

of Pressac Limited, long Eaton, Nottinghamshire,

England

concerning

Contact sleeve and cable lug for electrical plugs

***
² 9 October 1969 - Great Britain

The invention relates to a tubular contact made of electrically conductive material for fitting into a bushing or a molded piece for the purpose of forming an electrical socket connection element for receiving a contact pin with a circular cross-section.

A disadvantage of known electrical socket connection elements of the type mentioned is that ₅ that the tubular contact from a slit tube is seam; when an oversized pin is inserted into the tubular contact, it dehiat the latter so that locking projections on the tubular contact for making stops in the fitting to prevent axial displacement of the tubular contact in the fitting are also expanded and easily with the stops come out of engagement, allowing undesirable axial movement of the tubular contact.

109819/1736

One purpose of the invention is to provide a tubular Contact, which has an increased elasticity compared to known contacts, so that it is able to larger To record inaccuracies in the diameters of contact pins, without affecting the effect of the locking latches within the porm.

Another purpose of the invention is to provide a tubular contact which can rotate within its fitting is prevented, a cable connecting to the contact is prevented from being twisted during insertion gets destroyed.

Another purpose of the invention is to create a tubular contact which has a good electrical connection between itself and a pin, even if the latter is not made exactly as to its diameter is.

According to the invention is generally a tubular contact for electrical socket connection elements provided, v / which comprises a portion for receiving a pin which has a substantially ^ D-shaped cross-section, the flat wall is designed as an elastic sheet-like part, which against the inside of the tubular contact is curved in order to come into engagement with a contact pin when it is inserted and resiliently to withstand its insertion and also to ensure a good electrical connection is brought about between the tubular contact and the inserted pin.

When a contact pin of oversize diameter in the tubular Contact should be used, the resilient sheet-like part yields to receive the pin without the the The pin receiving part of the contact is excessively stretched and the locking latches are displaced.

1 0981 9/1 736

According to a preferred embodiment of the invention has The tubular contact also has a locking engagement with one outwardly pressed rigid stop, which cooperates with a stop in a molded piece, to the distance of the contact in which it can be inserted into a fitting when initially pushed into it 5 resilient tongues are also provided, which are resilient and then outwards behind the stops in the fitting Snap in to prevent the contact from being pulled out of the fitting in the reverse direction.

The invention is explained in more detail below with reference to the drawing. Show it:

Fig. 1 shows an embodiment of an inventive Contact sleeve in side view,

2 shows the component according to FIG. 1 in a view from the front, FIG. 3 shows the component according to FIGS. 1, 2 in a plan view.

4 shows the component according to FIGS. 1-3 in perspective Opinion,

5 shows the component according to FIGS. 1 - 4 in a view from below,

6 shows the component according to FIGS. 1-5 after being inserted and snapped into place in a molded piece in axial section.

The illustrated in the drawing tubular contact for electrical socket connection elements comprises a pin receiving part or apron 1, which is provided with a longitudinal slot 1a and, as illustrated in particular in FIG. 5, has a substantially D-shaped cross-section.

A flat wall 2 of this thin pin receiving part has a

109819/1736

ORIGINAL

Pair of longitudinal slots 3 according to FIG. 1, 4 to an elastic to form sheet-like part 4, which is bent very slightly against the inside of the tubular contact to to rest against a contact pin to be inserted therein and to elastically resist its insertion, so that a good ' electrical connection between the touching surfaces of the tubular contact and an inserted pin is ensured; this also leads to inaccuracies in the Recorded diameter of a contact pin without the contact extended too much by an oversize pin will.

The contact is turned away from the pen to be picked up End with suitable components for connection to a ■ connecting line Mistake. Appropriately, the component comprises a pair of tongues 5 for flanging around the stripped end 6 of a Line, as well as tongues 7 for flanging around the insulation 8 of the line, as can best be seen from FIG.

The contact also has an extruded rigid stop or locking catch 9 which engages with a stop cooperates in a molding 10 according to FIG. 6, wherein to limit the distance of the contact in the molding at the beginning Introduce can be used. The contact is also made with a pair of resilient tabs or locking latches 11 provided, which give way and then snap behind the stops in the fitting 10 to the outside to a To prevent the contact from being pulled out of the fitting in the reverse direction. This fitting also has a hole D-shaped cross-section and is made complementary to the dimensions and shape of the contact. This fitting can be provided with one or more protrusions to accommodate one or more contacts.

The contact is made of any suitable electrically conductive type Sheet metal from which it can preferably be formed in one piece in any suitable manner.

1098 19/1736

The D-shaped cross section of the tubular contact results three point contact with the inner surface of the flat wall and the inner surfaces of the curved walls, which of each Page go out, so that in conjunction with the elastic sheet-like part 4, a good electrical connection is ensured is.

If the pin receiving part 1 of the tubular contact is made with a D-shaped cross-section, a relative Rotation of the contact around its axis within its fitting can be prevented, the shaped piece also having a D-shaped cross-section in the aforementioned manner.

1 09819/1736

Claims (3)

Claims 1. Contact sleeve for electrical socket connection elements, marked through a part (1) of an essentially D-shaped cross-section intended to receive a contact pin with a flat wall part (2) which is formed by an elastic sheet-like part (4) which is directed towards the inside the contact sleeve is bent to rest against a contact pin received therein and to insert it resist, so that a good electrical connection between the contact sleeve and an inserted contact pin is maintained will. 2. Contact sleeve according to claim 1, characterized by a locking engagement consisting of a pressed rigid Stop (9) which cooperates with a stop in a shaped piece (10) in order to limit the distance, up to which the contact sleeve can be inserted into a molded piece if an initial insertion takes place, and by resilient Tongues (11), which are intended to give in and then snap out behind stops in the molded piece (10), to prevent the contact sleeve from being pulled out of the fitting in the reverse direction. 3. Contact sleeve according to one of claims 1, 2, characterized in that the flat wall (2) of the part intended for receiving the pin has a pair of longitudinally extending slots (3) to form the resilient sheet-like part (4). For Pressac Limited; PATBNTANHWtTl DUMO. H. FINCKE, DIPt-INO. H. OtPL-ING. S. STABQER 109819/1736