DE2445196C3 - Polarized electromagnetic relay - Google Patents

Description

Section L to left nKS vcr «: -. I. The friction between, o the named parts creates a premix

Wear and tear. ^^ Undefined friction between two parts increases the required for response

The task of the? RSendenZu; atzerfindu _g is to round the polarized circuit board relay according to the main patent with regard to its armature bearing so as to avoid friction of the

äS ^{a greater switching frequency} -

20th

The invention relates to a polarized electromagnetic relay according to the main patent. The main pate is based on a well-known relay, which is an E-shaped core yoke, one on U-shaped armature resting on the ends of the core yoke, a bobbin with a molded guide for a contact operating slide and a contact spring set below the iron circle having.

The invention according to the main godfather is that on the transverse web of the E-shaped core yoke of the Relay a cuboid permanent magnet and on this a U-shaped yoke is placed on the outer leg of the E-shaped core yoke are shortened and that the end edges of this outer leg as Blade bearings for the U-shaped anchor are used so that it is in the first stable position of the U-shaped yoke and the middle leg of the E-shaped core yoke and in the second stable position reversing the direction of flow in the armature of the U-shaped yoke and the outer legs of the E-shaped Core yoke is held.

According to the dependent claims 3 and 4 of the main patent, the armature is via relatively slim retaining springs out, which consist of non-ferromagnetic material and attached to the underside of the armature

The relay known in this way is intended to be improved by the present invention.

Fig. 1 of the drawing shows the armature and the retaining springs of the known relay. The retaining springs 2, 3 are fastened at two points 4, 5 on the legs of the U-shaped armature 1. The springs 2 cover the armature legs ^{for about 2} hours. They are tapered on the side facing away from the transverse web of the U-shaped armature 1 to avoid larger restoring forces (2a, 3a) and end in rectangular widenings 26, 3b which are used for fastening and into which rectangular recesses are made.

F i g. 2 of the drawing shows a side view of the known relay in a simplified representation which the motion sequence of the armature becomes visible when switching.

If the coil voltage is switched on with a certain polarity, the will be repelled ll 9: the anchor rotates around the cutting edge 8. The solved by

that ^rt S ^Un H ^g Sede ^U r; " _{are attached to the" Quersre g of} the U-shaped armature and that these springs have semicircular bulges in their area 2, Serart formed over the legs of the armature, the armature sat when switching the relay .s unrolls on these bulges.

An embodiment of the invention is given

^of

Fig. 4 shows an oc "..." ..— .. in a simplified way Representation from which the motion sequence of the armature becomes visible when switching Fig. 5 and 6 show the two stable states of the corresponding parts are with the same Provided with reference mark.

Tn F i g. 3 is the armature 11 with the newly formed Retaining springs 12, 13 can be seen. The springs 12, 13 are in

^ Points 14, 15 at the front end of the anchor 11 attached. The retaining springs 12, 13 have approximately in the Middle of the two legs of the U-shaped anchor 11 semicircular bulges 12c. 13c on. D.e

VeSunge "« * «- and the one to attach to the E formed core yoke 17 serving widenings at the rear end of the retaining spring »12. 13 correspond to those known from the main patent

'(Fig. 1).

Movement of the anchor 11

_F ? ITS "Ten movement blue during the switching process from the rest position

u, e _L age ues armature 11 in the rest position, st characterized in that it with the left hands on "the outer limbs of the E-shaped core yoke 17 and U-shaped with the right end of the core yoke

^anl B ^e of the coil voltage efzuschaltung in the rest position there is a push-off of the rear Te. it

of the armature 11 at the point marked 19. If the applied voltage exceeds the response voltage of the relay, the armature 11 moves as a result of the Repulsion from the E-shaped core yoke 17 by an emc rotary movement around point 18 until it passes through

permanent magnetic forces are drawn entirely to the U-shaped yoke 16 (shown in dashed lines).

The semicircular bulges 12c. 13c of the retaining springs 12, 13 ensure a clear

Unrolling the armature II on the E-shaped core yoke 17 and thus prevent the armature 11 from being displaced in the longitudinal direction.

By reshaping the retaining springs, the friction between the armature 11 and the U-shaped Hole 16 avoided, whereby e.n material wear in point 18 is excluded.

The relocation of the fastening points 14, 15 to the front end of the armature 11 has the advantage over the known embodiment that the Springs 12, 13 develop a lower moment of resistance during the rotary movement, which increases the switching speed of the relay is increased.

In Fig. 5 and 6 are the two stable end positions of the armature 11 shown in this polarized electromagnetic relay.

F i g. 5 indicates the rest position of the armature 11. The armature 11 touches the leg ends of the U-shaped Yoke 16 and at the same time the outer legs of the E-shaped core yoke 17. The retaining springs 12, 13 in this case lie flat on the underside of the armature 11.

Fig.6 shows the iron circuit of the relay in the working position in which the U-shaped armature 11 is on the Mmelschenkel of the core yoke 17 and the outer legs of the U-shaped yoke 16 rests. In This position shows a strong deformation of the retaining springs 12, 13.

In a further modification of the magnetic circuit, it makes sense to design the leg ends of the U-shaped armature by attaching pins made of ferromagnetic material, as shown in FIGS. 3 to 6. For this purpose, \ n the retainer springs 12, 13 recesses 12c / 13c / are provided through which the pin 11 referred to reach through a 11 can, b. The cones lla. 116 and the recesses 12c /. 13c / in the retaining springs 12, 13 are matched to one another with regard to their size so that a relative movement of the armature 11 is possible.

This modification of the armature legs eliminates the forced air gap that occurs in the known relay due to the non-ferromagnetic retaining springs; A magnetic F ⁷ IuB is better transferred from the armature to the outer legs of the E-shaped core yoke in the rest position (FIGS. 4 and 5) due to the lower magnetic resistance of the transition point, whereby a higher adhesive force of the armature is achieved in the rest position. This results in a higher shock resistance.

1 sheet of drawings

Claims (2)

thereby the Patent claims: 1 Polarized electromagnetic relay according to Patent 2054051, characterized in that the retaining springs (12, 13) are attached to the crosspiece of the U-shaped armature (11) and that these springs are semicircular bulges formed in this way in the area above the legs of the armature (U) (12c. \ 3c) show that the armature rolls on these bulges when switching the relay. . 2 relay according to claim 1, characterized in that on the leg ends of the U-shaped armature (11) pins (Ua. Ub) made of ferromagnetic material are formed, which through recesses (12d, \ 3d) in the springs (12, 13) h .to crack down. K.reisDogcii, *. »· ■> ---- "« '^ Äi v _erf or _T " _g *, ; it can be seen that the arc / yden Since the attachment points 4.5 • ι - I_ J _- * _l Λ