DE8707987U1 - Contact ring - Google Patents

Description

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The innovation concerns a contact ring with the feature-i in the generic term of the main saying.

It is known to manufacture such contact rings from two parts, namely a ring part and a support part, which are joined together by spot welding. The ring part is cut from a pipe, while the attachment part is manufactured as a standing part*

The previously known contact ring has the disadvantage of being uneconomical to manufacture and is also not sufficiently reliable in operation, as the spot-welded connection points sometimes come loose. In addition, the electrical conductivity properties at the connection point are not optimal.

The aim of this innovation is therefore to provide a contact ring that can be manufactured more cheaply and more easily while offering greater operational reliability.

The innovation solves this problem with the features in the characterising clause of the main claim.

The new contact ring is now made in one piece and is bent from a circuit board. The one-piece design has the advantage of a cheaper and simpler manufacturing process and also brings with it improved electrical conductivity. The attachment part is bent at the connection point of the ring part ends to form an overlap and can be bent depending on the

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Intended use can extend in any direction*

The ring parts can be connected in different ways, for example by overlapping and spot welding.* The invention also provides an advantageous, positive connection for this. This allows the contact ring to be produced in one go in just one machine, whereby the plate is punched, pre-bent with the attachment part bent, then formed into a ring and finally positively latched.* The positive connection also ensures a secure hold, but can also be released again if necessary, for example to dismantle stuck contact rings.

The design of the ring part ends with the bevels specified in the subclaims offers a shape that is easy to bend. It is also recommended to provide the latch and the recess in the area of the bevels. They are thus also located in the ring casing in a space-saving manner and optimally ensure that the ring ends hold together at the connection point.

The ring part can be bent in any way, for example by forming corners, projections or the like. The contact ring is preferably used for cable connectors, whereby the attachment part forms the plug connection. Since the ring part is usually pushed onto pins or other carrier elements and is intended to create the electrical connection between the plug connection and this carrier element, it is recommended to bend the attachment part so that it lies on the inside of the ring part. In this way, a projection is created on the inside of the ring, which secures the electrical contact with the carrier element and also ensures that the ring part sits firmly on the carrier element. The attachment part can also

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also have a bend that serves as a stop for the ring part in axial alignment. With an attachment part on the ring side, the locking connection between the ring part ends is closed from the outside. In variation, it is also possible to bend the attachment part on the outside and close the connection from the inside.

The preferred application of the contact ring is in the area of cable connections and power transmission. The contact ring can also be used for other, non-electrical purposes, for example as a stop ring, where the attachment part acts as a mechanical stop. Basically, the application possibilities extend to all areas where a ring of any shape is to be provided with an attachment part of any shape and bent.

The innovation is shown in the drawings, for example and schematically. In detail:

Fig. (1) the finished contact ring in perspective view,

Fig. (2) the board in the punched cut,

Fig. (3) the board with bent attachment part and

Fig. (4) and (5) Variations of the contact ring in

Side view with differently curved attachment part.

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Mg. (1), (4) and (5) show a contact ring (1) which a ring part (2) and a projection part protruding from it

(3) which is preferably designed as a plug connection for electrical cables. The contact ring (1) is made in one piece from a circuit board (4) (see Fig.

(2) and (3)) were produced in one operation on a punching and bending machine. The board

(4) consists of stamped sheet metal, preferably a brass alloy.

As Fig. (1) shows, the ring part (2) is bent in a circular shape, with the two ring part ends (10, 11) being positively connected to one another at the joint (5). The ring part ends (10, 11) have matching bevels (6, 7) with which they lie flat against one another. The positive connection consists of a club- or spoon-shaped latch, which positively engages in a recess (9) adapted to it.

The attachment part (3) is bent at right angles from the ring part (2) at the joint (5) to form an overlap. In the example shown, the attachment part (3) is located on the inside of the ring. As Fig. (4) and (5) show, the attachment part

(3) be bent differently. In

In the embodiment of Fig. (4) it extends essentially in the axial direction of the ring part (2). However, immediately behind the distal ring part (2) it forms an inward-facing bend (12), which can serve as a stop for the contact ring in the axial direction. In Fig. (5) the attachment part C3) is bent twice and thus extends outwards in the radial direction next to the ring part (1). As a variation, the attachment part (3) can also point inwards.

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The manufacturing process is described below using the steps shown in Fig.

(2) and (3) shown board (4) explains:

Fig. (2) shows the board (4) as a flat and straight
Stamped part. The attachment part C3) is slightly narrower than the later ring part (2) and is centrically opposite this
In the punched cut of the ring plate (4), the bevels (7) of the later ring part ends (10,11) are
already preformed. The bevels (6,7) have
each have a 45 relative to the board's longitudinal axis.
At one end of the ring part (10) the bevel (7) is
already punched out, while on the other
Ring part end (11) at the punch cut only in the form of
small noses (6).

The latch (8) and the recess (9) extend in the longitudinal axis of the plate (4), with the latch (8) protruding from the center of the bevel (7). The recess (9)
ends in the middle at the bevel (6)
(see Fig. (3)) and is in the punch cut end
already cut off accordingly (compare Fig. (2)).

After punching the blank (4), the attachment part (3) is positioned at right angles to the ring part (2) along the
Bevel (6) is bent (see Fig. (3)). The bevel line simultaneously connects the finished bevel (6) of the ring part end (11) with the open recess
(9) is formed. If necessary, the attachment part (3)
bent further as shown in Fig. (4) or (S).

In the last step, the board (4) is
Formation of the ring part (2) is rolled, whereby a very high roundness can be achieved.
also the ring dividing ends (10,11) are connected to each other,
by inserting the latch (8) from the outside into the recess (9)
The latch (8) can be pressed on the
ri ncji nnensöi tig with overlap arranged attachment part

(3) 2u and is supported there* The dimensions

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the latch and the recess are such that the ring part ends (10,11) with their bevels (6,7) are pressed against each other.

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parts list

(1) Contact ring^

(2) R i n g t e i L

(3) Attachment part, plug connection

(4) Circuit board

(5) joint, butt joint (&aacgr;) bevel, nose

(7) Estimation

(8) Jack

(9) Recess

(10) Ring dividing end

(11) Ring part end

(12) Offset

Claims (1)

Protection claims Contact ring with a ring part and a protruding Attachment part, characterized in that the contact ring (1) is bent in one piece from a plate (4) to form the ring part (2), whereby Connection point (5) of the ring dividing ends (10,11) The attachment part (3) is bent in an overlapping manner. Contact ring according to claim (1), characterized g e k en &eegr;&zgr; e i c h &eegr; e t that the ring part ends (10,11) are connected to one another in a form-fitting manner via a latch (8) and a recess (9) adapted to it Contact ring < according to claim (2), characterized characterized in that both ring part ends (10,11) have matching bevels (6,7) of preferably 45°. Contact ring according to claim (3), characterized in that the latch (8) protrudes from one bevel (7) and the recess (9) opens at the other bevel (6). Contact ring according to claim (1) or one of the following, characterized by the fact that the Attachment part (3) on the inside of the ring part (2) lies. Contact ring according to claim (1) or one of the following, characterized in that the attachment part (3) extends in the axial direction of the ring part (2) and has a bend (12) outside the ring part (2).