DE1254729B - Connector pin for an electrical connection - Google Patents

Description

GERMAN ^ WWs PATENT OFFICE

EDITORIAL

German class: 21 c - 22

Number: 1254729

File number: P 30586 Vm d / 21 c

J 254 729 filing date; November 14, 1962

Opening day: November 23, 1967

The invention relates to a plug pin for an electrical connection, which with the Socket contact-making outer pin part is axially slotted and the long inner pin part one defines the maximum inward bending of the outer pin part S.

In known connector pins of this type, the outer pin part consists of a hollow cylinder rolled from sheet metal, into which the two-stage inner pin part can be loosely inserted. By means of one on the rear At the end of the outer pin part of the sleeve, the hollow cylinder is attached to the rear one Pressed step of the inner pin part, which has a larger diameter than the front step. The cuff itself serves as a handle for the connector pin or is in turn connected to it, e.g. B. screwed. With such connector pins, the positive connection between the inner and outer Pin part and the sleeve exposed to mechanical stress every time the so outer pin part is inserted into the socket making contact with it or pulled out of it. It there is therefore a risk that the connection will loosen over time and the plug pin in his Items falling apart.

The invention is based on the object of providing a non-positive connection between two connector pin parts create the mechanical stresses possible during the use of the connector pin remains completely free.

This object is achieved in that the outer pin part has a two-stage bore in which narrower rear stage a spacer piston with a snug fit is used, which represents the inner pin part and over a substantial part of its length in the front further step of the bore an annular one Leaves space to the enlarged hole free.

An additional advantage is that instead of three, only two individual parts are required, as well as the spacer piston does not require any gradation and is therefore easier to manufacture.

The front face of the spacer piston is preferably against the face of the outer pin part reset. This prevents the outer pin part from welding in the event of a power failure bent forward.

The rear end of the spacer piston expediently has a conical tip that facilitates the insertion of the distance piston into the bore of the outer pin part.

An embodiment of the invention is after-pin for an electrical connection

Applicant:

The Pyle-National Company,
Chicago, JH. (V. St. A.)

Representative:

Dipl.-Ing. W. Meissner and Dipl.-Ing. H. Tischer, patent attorneys, Munich 2, Tai 71

Named as inventor:

Joseph A. Nava, Villa Park, Jl .;

Henryk W. Meresz, Chicago, JlL (V. St. A.)

Claimed priority:

V. St. v. America 6 August 1962 (214 978)

standing on the basis of the drawing explained in more detail in which shows

F i g. 1 is a side view of a connector pin according to the invention, partially in section, and an associated one Socket and

F i g. 2 shows a cross section along the line II-II in FIG. 1 on a larger scale.

The elongated, cylindrical plug pin 10 can be inserted with its outer pin part 21 into the bore 12 of a socket 11 . At its end facing the pin member 21 the opposite end it carries a coupling part 13 having a recess 14 for receiving the bare end of a provided with an insulation 17 lead wire 16. A cross bore 18 makes it possible to observe the proper insertion of the lead wire into the recess fourteenth By means of two arranged in axially spaced annular shoulders 19,20 of the connector pin can be optionally secured in a contact carrier.

In the embodiment shown, the outer pin part 21 is cylindrical and has a slightly smaller diameter than a shoulder 22 which is located further back and has a conical end face 23 . The outer pin part 21 can also have a different geometric shape depending on the cross-sectional shape of the bore 12 of the socket 11. The front face 24 of the outer pin part 21 is tapered at 26 to facilitate the insertion of the plug pin into the socket.

709 689/335

Claims (3)

254 The outer pin part 21 is provided with a two-step bore 30, which extends from the end face 24 to the shoulder 22 and ends at 31. In the narrower rear step of the bore 30, a spacer piston 33 is used with a snug fit. It expediently has a conical tip 34 which facilitates introduction into the bore. The spacer piston 33 extends over a substantial part of its length into the front, further step 32 of the bore 30, leaving an annular gap 36 free for the enlarged bore. The outer pin portion 21 is axially slotted at 37. The width of the slot 37 is so large that the slot can easily be produced in the usual manner. The axial length of the slot is dimensioned such that the outer pin part 21 is radially flexible over a substantial part of its length. In the embodiment shown, the slot 37 ends sufficiently shortly behind the inner end of the spacer piston 33 and thus before the shoulder 22 so that the spacer piston 33 can be pressed into the unslotted part of the bore 30 and held there mechanically. The bore 30 leads to a cross section of the prongs produced by the slitting of the outer pin part 21, which results in an even load in the outer fibers of all surfaces. The prongs are therefore very stable and the same insertion and extraction forces occur. The spacer piston 33 determines the maximum inward bending of the outer pin part 21 and prevents overstressing. Due to the snug fit of the spacer piston 33 in the bore 30, the corresponding dimension is automatically determined after assembly. While it is beneficial in terms of mechanical stress to allow the spacer piston sc to reach as close as possible to the end face 24 of the outer pin part 21, a sufficient distance 39 is expediently provided between the end face and the front end face 38 of the distal piston to prevent that the prongs of the outer pin part 21 weld during a power interruption. Patent claims: 1. Plug pin for an electrical connection whose outer pin part making contact with the socket is axially slotted and whose long inner pin part defines a maximum inward bending of the outer pin part, characterized in that the outer pin part (21) has a two-stage bore (30) in whose narrower rear step is a spacer piston (33) with a snug fit, which represents the inner pin part and which leaves an annular gap (36) free for the enlarged bore over a substantial part of its length in the further front step of the bore. 2. Connector pin according to claim 1, characterized in that the front end face (38) of the spacer piston (33) is set back against the end face (24) of the outer pin part (21) . 3. Connector pin according to claim 1 or 2, characterized in that the rear end of the spacer piston (33) has a conical tip (34) . Considered publications:
French Patent No. 1 010 375. 1 sheet of drawings 709 689/335 11.67 © BundesdruckereiBerlin