DE2413432A1 - SELF-ADHESIVE PROTECTIVE TUBE ANCHOR CONTACT - Google Patents

Description

STANDARD ELEKTRIK LORENZ AG
Stuttgart

G.Wessel-W.Grobe 20-44

Self-adhesive protection tube anchor contact

The invention relates to a self-adhesive protective tube armature contact with tongue contact anchors working together in pairs made of wire or band-shaped reversible polarity, hard magnetic material.

The magnetic circuit of relays is generally provided with a separating plate between the core and the armature, to ensure that the anchor falls off. In the case of thermowell anchor contacts, this separating plate is direct realized at the contacting ends of the tongue contact anchor in the form of non-magnetic contact material. Due to the small size of the parts and due to the usual manufacturing process, this contact material can which tape material or wire is used for the manufacture of the tongue contact anchor, not plated on will. Electroplating of the contact materials is therefore common and at the same time provides the desired separation effect. With magnetically hard tongue contact anchors it must also be accepted that the galvanically applied contact layers do not diffuse in v / ground can.

8.3. 1974, G / Ku. ./.

5098-0 / 01-4

G.Wessel 20-44

'For simple applications, hard magnetic Tongue contact anchors are made from a base material that not only has good magnetic properties shows, but also results in sufficient electrical switching behavior. With these tongue contact anchors only to achieve a magnetic separation effect, a thin, non-magnetic layer by vapor deposition, Electroplating, spraying or the like. Process are applied. This additional operation is very expensive.

The invention is based on the object of creating a self-adhesive protective tube armature contact in which no non-magnetic separating layer is required on the contact-making ends of the tongue contact anchor.

According to the invention this is achieved in that at least the touching surfaces of the two tongue contact anchors are provided with a profile pattern.

According to a further embodiment of the invention, both are tongue contact anchors provided with the same profile pattern.

So that both sides of a tongue contact anchor are now equivalent, and thus the assignment of the profile pattern opposite tongue contact anchor is always the same, according to a further embodiment of the invention, the tongue contact anchor provided with a professional pattern on both sides of their contacting ends, which is attached to the envelope, i.e. when a tongue contact anchor is rotated 18o ° around its longitudinal axis, the same picture shows.

509840/010 ^

G.Uessel 20-44

Further refinements of the invention are given in the remaining subclaims.

The protective tube armature contact described has various advantages. By on the contacting ends of the Tongue contact anchor applied profile pattern results in a contact surface that is significantly smaller than that Total anchor area at the magnetic working air gap. The saturation of this contact surface then acts as a release agent and an optimal residual air gap is obtained at the working air gap. Tongue contact anchor with a profile pattern are easier and cheaper to manufacture than coated tongue contact anchors and for self-adhesive protective tube anchor contacts e well suited for simple applications.

The invention is explained in more detail using exemplary embodiments with reference to drawings , in which:

1 shows the overlapping ends of two tongue contact anchors in an enlarged three-dimensional representation;

2 shows a prefabricated tape used for the production of tongue contact anchors, seen from above.

In Fig. 1, the overlapping ends of two tongue contact anchors are 1 and 2, which are provided with a profile pattern on both sides of their contacting ends applied by embossing or rolling. The tread pattern consists of parallel strips J, which at an angle of 45 ° to the longitudinal axis of the tongue contact anchor 1 and 2 run. The strip profile is on both Tongue contact anchors 1 and 2 are the same and point to the

509840/0104

G.Wessel 20-44

impact, ie with a 180 ° rotation of a tongue contact anchor 1 or 2 about its longitudinal axis, the same picture. In the working air gap 4, the inclined strips ρ of the profile pattern are therefore crosswise opposite one another. If, as a result of the embossing or rolling process 50 ^c , j of the surfaces provided with the strip profile are recessed by 2 μm, for example, this results in a contact area of ? Jj -j of the total anchor area at the working air gap 4. The effective air gap after saturation of these 25 £ the pole face is then approx. 4 yum.

For tongue contact anchors made of wire-shaped material, it is It is advantageous to apply the profile pattern by embossing, since an embossing process to produce the flat ends is anyway the tongue contact anchor takes place.

When using ribbon instead of wire for that The profile pattern is used to manufacture tongue contact anchors advantageously applied in a rolling process. It is beneficial not only to use the tread pattern on everyone Air gap area, but along the entire length of the tongue contact anchor to apply, but with suitable interruptions there, ViO later the melting points of the tongue contact anchor lie.

In FIG. 2, such a band 5 is shown, which is provided with a strip profile J over its entire length, with the exception of the melt-in points 6.

8 claims

1 sheet of drawing

509840/01 (U

Claims (1)

G.Wessel- 20-44 Expectations Self-adhesive protective tube anchor contact with tongue contact anchors working together in pairs made of wire or band-shaped reversible polarity hard magnetic memory material, characterized in that at least the contacting surfaces of the two tongue corrugated anchors are provided with a profile pattern. 2. Protection tube anchor contact according to claim I _3, characterized in that both tongue contact anchors are provided with the same profile pattern. ; j. Protective tube armature contact according to claims 1 and 2, characterized in that that the tongue contact anchors are provided with a profile pattern on both sides of their contacting ends which is the same on envelope, i.e. when a tongue contact anchor is rotated 18o around its longitudinal axis Picture shows. 4. Protection tube anchor contact according to claim 1 to J> _s, characterized in that the profile pattern is applied to tongue contact anchors made of wire-shaped material by embossing. 5 · Protective tube anchor contact according to claims 1 to J5 > characterized in that the profile pattern in the case of tongue contact anchors made of strip-shaped material is applied by rolling. 80.1974, G / Ku ./. 509840/0104 G.Wessel 20-44 β. Protective tube armature contact according to claim 5, characterized in that that the profile pattern over the entire length of the tongue contact anchor, with the exception of the melt-in points, is upset. 7. Protection tube armature contact according to claim 1 to 6, characterized in that that the profile pattern consists of parallel strips at an angle of 45 ° to the longitudinal axis of the Tongue contact anchor run. 8. Protection tube anchor contact according to claim 1 to J, characterized in that about 50 % of the surfaces provided with the profile pattern are recessed by the embossing or WalζVorgang.