EP1837890A1 - Relay - Google Patents

Abstract

The relay (11) whose height smaller than its width and width smaller than its length, has a break contact (14) arranged near a clapper-type contactor (21) whose contact spring (29) in each position runs parallel to drive arm of contactor (25). A separating wall that is formed between contactor and break contact, in a region between contact heads of break contact and drive cam (27), runs parallel to drive arm of contactor in the inactivated position spread away from a coil (17).

Description

The invention relates to a positively driven relay with an electromagnetic drive.

Positively-driven relays are known in a variety of embodiments. As a result of the steady evolution towards miniaturization of circuits, the relays designers are under pressure to design relays as small as possible. For installation in a standard 17.5 mm case of safety circuits for device controls, e.g. The height of the relay may not exceed 12 mm. In addition, it may be necessary to accommodate SMD components between the relay and the printed circuit board on which the relay is plugged. This miniaturization requires that the tolerance ranges inside the relay are reduced. This leads inter alia to the fact that the distances between live parts are reduced inside the relay and therefore the air and creepage distances between these parts must be extended by intermediate structures, that the dimensions of contact springs and the burning strength of contact heads are reduced, and the adjustment the contact springs is becoming increasingly problematic. Not only are the tolerances for the switching paths low, but also the balance of power between the contact springs and the drive leave no room for large tolerance.

It is therefore an object of the invention to propose a relay, which has very small dimensions.

This object is achieved according to the invention by the subject matter of claim 1.

It is a further object of the invention to provide a basis for providing a series of relays which are equipped with 3, 4, 6 and optionally 8 pairs of contacts each having at least 6, preferably 8 or even 10 Ampere, which have a maximum height of 12 mm beyond the connection pins, which are a maximum of 35 mm wide and 56 mm long, and which comply with the Euro Standard EN 50205 for positively driven relays. In the relay of this series as many components, in particular the Contact pairs to be identically formed. It is another goal that the relays are as easy to adjust as possible.

An inventive, positively driven relay, has an outer mass-determining housing whose height is less than its width, and whose width is less than its length.

The relay comprises an electromagnetic drive which fills the length or width of the relay with a hinged armature which has a drive arm extending in the direction of the core. The drive arm cooperates at its free end with a drive comb. The relay further comprises a plurality of contact pairs, which are each formed by a contact spring and a fixed or spring-shaped mating contact. The contact springs extend in the direction of the core, and are in positive-guiding engagement with the drive comb with their drive ends.

In this relay, the pair of contacts arranged directly next to the armature is an opener, whose contact spring runs in each position of the armature at least approximately parallel to the drive arm of the hinged armature. In activated, splayed by the coil position of the drive arm of the hinged armature between the hinged armature and the opener existing partition extends at least in the region between the contact head of the opener and the drive comb approximately parallel to the drive arm.

The drive expediently comprises a coil with an elongated core made of a magnetically soft iron, and a winding around the core. The winding has a height of the housing practically filling diameter.

The contact springs expediently have a foot and a free drive end, as well as a contact head between the foot and the drive end. They are each anchored with the foot at spaced locations along a side of the housing perpendicular to the direction of the core in the housing. They extend in the direction of the core and are in positive-guiding engagement with the drive comb with the drive ends.

The contact pins for the contact pairs and for the drive are perpendicular to a defined by width and length surface of the housing out of the housing.

Such a positively-driven relay comprises, in one embodiment, an electromagnetic drive that fills the length of the relay and six contact pairs, as well as the necessary contact pins for the six contact pairs and for the drive. The six contact pairs are each formed by a contact spring and a fixed mating contact. With the foot, the contact springs are anchored at spaced locations along the width of the housing in the housing. The drive ends of the contact springs of three contact pairs arranged in a row are directed counter to the drive ends of the contact springs of three contact pairs arranged in a second row.

Other embodiments include an electromagnetic drive that fills the width of the relay and three or four contact pairs, as well as the necessary contact pins for the contact pairs and for the drive. In these embodiments, the pairs of contacts are arranged only in a row.

In such a relay both very small dimensions, and the EN 50205, and a load capacity of 6 to 10 A, in particular one of 8 A per pair of contacts can be achieved. The height of the relay advantageously measures a maximum of 12 mm, preferably a maximum of 11 mm. The embodiments described in more detail below with reference to the figures measure 10.5 mm. The diameter of the coil measures 8 to 10 mm, preferably 8.5 to 9.5 mm. In the embodiments, the coil diameter measures approximately 9 mm.

The length of the double-row relay expediently measures a maximum of 56 mm, preferably a maximum of 54.5 mm, and the length of the coil at least 40 and at most 46 mm, preferably at least 42 and at most 44 mm. In the double-row embodiment, the housing length measures 53.8 mm and the coil length 42.7 mm.

In the case of the relays with only one set of contact pairs, the coil is practically half as long. The outer mass in the direction of the coil and the core and the coil length are smaller by 24.2 mm than in the relay with two rows of contact pairs.

So that the height of the relay can be as low as possible, the coil is made as long as possible. It has been shown that a coil having the above dimensions has a relatively low power consumption of about 0.5 to 0.8 watts (0.75 watts in the embodiment) at a maximum current carrying the contacts of 6 to 10 amps (in the embodiment 8 A). With this power, six contact springs (four NO and two NC) can be operated. In the smaller relays, the reduced dimensions are also sufficient for a correspondingly reduced number of contact pairs, whereby the power consumption can be reduced only slightly.

For the drive to have the appropriate characteristics, the core is made of a high quality material with a low coercivity of about 40 A / M. The changing room is maximally utilized. The housing and a core jacket consist of a liquid crystal polymer and have wall thicknesses of at most 0. 7 mm, at least in the area of the drive. In particular, for the dimensions of the relay relevant walls inside the housing have a wall thickness of a maximum of 0.5 mm. The relay base is 0.7 mm thick in the area of the contacts. The core sheath has a wall thickness of 0.4 mm.

The width of the six-contact relay, or the length of the three-contact relay preferably measure at most 35 mm, more preferably at most 34 mm. This allows just to arrange the feet of the contact springs, or the pins formed on the feet of the contact springs in the direction of the width of the housing in a minimum grid spacing to each other. This distance measures in each case between 7.3 and 7.7 mm, preferably between 7.4 and 7.6 mm, 7.5 mm in the exemplary embodiment. This distance ensures that between the connection points in the printed circuit board, in which the pins are soldered or plugged in, still the prescribed 5.5 mm distance can be maintained. The four-contact relay is longer by such a pitch than the three-contact relay.

Advantageously, the pins for the contact pairs are arranged in a rectangular grid. The pins at the feet of the contact springs are arranged on the edge of the housing. The pins of the fixed mating contacts are arranged symmetrically in the six-contact relay to a center axis extending in the direction of the width of the housing. In the direction of the length of the housing latter have a grid spacing of at least 12 and at most 18 mm to each other. Preferably and also achieved is that the distance between the pins of the fixed Mating contacts is the same size as the distance between the pins of the mating contact and the contact spring of a contact.

In the single-row relays, the pins of the fixed mating contacts are arranged at the same distance to the pins of the contact springs as in the double-row relays. They are therefore about 10 mm or about 19 mm away from the edge of the housing.

Conveniently, the or are the two closest to the drive contact pairs opener. They open away from the drive. The other two to four contact pairs are closers and close away from the drive. The fixed mating contact of the opener may be slightly rotated relative to an orthogonal to the housing orientation, so that the cooperating with him contact head of the tensioned contact spring of the opener rests almost parallel. Among other things, this arrangement has the following advantage: Thanks to the arrangement of this wrenched, fixed mating contact adjacent to the drive, this turning of the fixed mating contacts results in the possibility of reducing the distance between the drive and the first contact pair, as required by the drive arm of the hinged armature Room and the partition wall between this room and the opener runs approximately in the same slope, as the mating contact of the opener. This reduction is greater, the closer the fixed counter contact moves against the foot of the contact spring. The partition may extend from its drive-comb-side end beyond the contact head of the mating contact in the desired direction. This serves to shorten the dimension of the housing directed perpendicular to the direction of the core (width in the two-row, length in the one-row relay).

Thus, the distances of the pins may be minimal, the contact springs of the two nearest the drive opener contact pairs and the contact springs of these adjacent contact pairs run from their foot to their head converging. Inside, the air and creepage distances between adjacent contact pairs can be extended to the necessary lengths by dividing walls on the bottom part and cover part and further baffles on the drive comb.

In the case of the two-row relay, the contact springs closest to the drive are expediently arranged symmetrically. the one Contact spring, which is arranged on the side of the armature, extends at least approximately parallel to the drive arm of the hinged armature, or even diverging from the foot to the contact head end. This serves to shorten the width of the housing. This is at least true even if a partition between the hinged armature and the contacts is directed approximately parallel to the maximum folded-out drive arm of the hinged armature. The drive arm is then maximally unfolded when the hinged armature is attracted to the magnet.

As a rule, in such a relay at least one of the elongated contact springs is not aligned orthogonal to the housing. The deviation from an orthogonal to the housing height having housing outer surfaces alignment of the relaxed contact spring is predetermined by an alignment of a housing formed on the foot receptacle for the foot of the contact spring. The adjustment of the foot, which is the adjustment of the direction of the slot in a block formed in the housing, in connection with the unbent, elongated contact spring, allows a very cost, general adjustment of the contact pairs on the housing, and that before mounting the relay. The adjustment takes place on the mold of the housing.

So that the driving force of the relay, the contact pressure of the closer and the length of the tracking path can be optimized, the contact spring has a smaller cross-section in the region of the free drive end than between the foot and the contact head, and has this projecting beyond the contact head tapered drive end a length from 4 to 7 mm. This length and the tapered cross-section allow springs of this drive end beyond a point of contact. The drive end preferably has a length of 5 to 6 mm. A Nachfederweg enabled thereby, for example, 0.3 to 0.7 mm.

The invention thus overcomes the mindset that each contact spring of each relay needs to be adjusted after assembly and suggests a solution that allows such adjustment to fall after assembly. It thus allows to reduce and optimize the tolerance ranges of the contact springs, the distances between the contact heads, the preload of the contact springs, the trailing paths, the balance of forces between the drive and contact spring package, and thus to minimize the size of the relay.

Such a relay has in a known manner a housing and therein at least one adjusted contact pair. The contact pair advantageously has at least one contact spring, which is inserted into the housing with a foot in a slot for anchoring in the housing, which is formed in a block in the housing. The contact spring is equipped with a contact head, which cooperates with a contact head of the mating contact.

The relay is advantageously characterized by the fact that the contact spring of an adjusted contact pair is stretched in the relaxed state. Under an elongated contact spring is understood in this document that a straight line can be arranged from a contact head end to a foot end of the contact spring within the contact spring. Useful contact springs are planar parts, without any bends or bulges, with the exception of a doubling of the thickness of the foot by folding the spring material at the foot end. Another exception may be a hook on the drive end of the contact spring, which is intended to prevent falling out of a broken contact spring from the drive comb. Such from their anchorage to the contact head or even beyond the contact head out stretched contact springs can be produced with very low tolerances.

The relay is characterized with advantage further characterized in that the direction of the slot is predetermined such that is arranged in a resting state of the relay, the contact head of the contact spring within a selected distance range to the contact head of the mating contact when the contact spring is part of a Schliessers. The relay may have NO and / or opener and preferably has both. Therefore, in the case of the relay, the contactor of the contact head of the tensioned contact spring, with which this contact head presses in the resting state of the relay against the contact head of the mating contact, lies within a selected pressure range, alternatively or additionally. Essential to the invention is that the adjustment of the contact spring is not done by bending or bending, but the contact spring of an adjusted contact pair is stretched in a relaxed state, but the direction of the slot in which their feet is anchored adjusted. Such an adjustment can be made on the housing, or on the mold of the housing. Since the injection-molded parts and the elongated contact springs can be manufactured with very tight tolerances, an adjustment of the contact spring after assembly of the relay is no longer required. For the manufacture of such a relay, therefore, the direction of the slots in the injection mold is to be adjusted before the relay goes into production. For the work of subsequent adjustment of the individual contact springs falls as far as possible. However, it may still be useful and necessary to control the adjustment, and if necessary, individual contact springs can still be adjusted later. Although it is desirable not to have to adjust any of the contact springs later, so has a relay according to the invention only at least a single contact spring, which is adjusted according to the invention. Preferably, all the contact springs are adjusted in this way.

Preferably, the mating contact is a fixed contact and not a contact spring. A fixed mating contact can be used with very small tolerances in the housing. But it is also not impossible to form the mating contact as a spring. Also, such a contact spring of a mating contact is stretched in a relaxed state. It is anchored in a slot in a block formed in the housing. In contrast, it presses in contrast to the first contact spring against a stop formed on the housing. The slot is aligned with respect to the stop so that the contact pressure of the contact spring against the stop is within a selected pressure range.

It is desired by the users of relays that the pins of the contact pairs are arranged in an orthogonal grid. This not only has aesthetic aspects, but also makes it easier to keep track of creepage and clearance on a print.

In order for the orthogonal alignment of a pin array and the adjustment of the contact pairs via the adjustment of the direction of the slot can be achieved simultaneously, if necessary, the slot must be aligned differently from an orthogonal orientation with respect to the housing.

It is accepted that the levels of the pins are not aligned orthogonally, but only the axes of the pins are arranged in an orthogonal grid. The levels of the pins are conveniently parallel to the plane of the extended contact spring. This is because the pin of the contact spring is advantageously formed integrally with the contact spring. The one-piece design of contact spring and pin of one piece highly conductive Spring material reduces the expense of reassembling the relay, reduces tolerances on the contact spring and ensures superior conductivity in the transition from the pin to the contact spring. The pin is expediently formed at the foot of the contact spring.

If necessary, this deviation from the orthogonal orientation may be an indication that the contact springs have been adjusted by adjusting the direction of the slot. Therefore, this slot direction deviating from the orthogonal orientation can be regarded as an independent invention irrespective of whether or not the contact springs are adjusted by being bent after being installed.

A transition between a spring region of the contact spring and the foot of the contact spring is advantageously designed stretched in order to avoid the deviations occurring between the individual contact springs during bending.

A method for adjusting the alignment of a contact spring of a pair of contacts anchored with a foot in a slot in a housing of a relay, is to be achieved that a distance between the contact heads of the contact pair within a selected distance range or a contact pressure between the contact heads of the contact pair within a selected pressure range is. In such a method according to the invention, the direction of the slot is precisely adjusted and inserted an extended contact spring formed in the adjusted slot. To adjust the slot of the block in which the slot is formed, could be formed rotatable relative to the housing. In this case, the adjustment of the direction of the slot will involve twisting the block and fixing the block with respect to the housing in the adjusted direction. However, for this adjustment to be performed only once, it is preferred that the injection mold, which defines the direction of the slot, be adjusted. In the injection mold, partial molds may be provided which include the slits or blocks with slots. Thus, only these partial forms need to be adjusted. For example, if a later supply of contact springs has different parameters than a previous delivery, these part forms may be replaced by ones adjusted for the new supply of contact springs.

The slots usually fall out of an orthogonal orientation with respect to the housing and / or an orthogonal pin pattern. Nevertheless, it may happen that a slot is nevertheless oriented orthogonally to the housing or to the pin grid. The slot is therefore usually aligned at an angle to the housing, which deviates from 0, 90, 180 and 270 degrees.

Thus, the adjustment of the contact pairs can be made by means of the direction of the slots, advantageously the precision of the contact springs must be checked prior to insertion into the slot. This checks whether the adjustment applies to the contact springs to be inserted or whether it needs to be adjusted.

So that the contact springs of at least one delivery are identical within very small tolerances, the foot on the contact spring is advantageously formed by folding the spring material. Folding, ie bending 180 degrees, is feasible with very consistent results, whereas bending at a smaller angle, whether blunt or pointed, leads to greater scattering. When folding the elongated design of the contact spring remains untouched. Also, a transition between the foot and a spring portion of the contact spring should be made stretched, so that the contact spring can be manufactured with high precision.

Brief description of the figures:

Fig. 1

schematically shows a plan view of an open relay with three and three oppositely arranged pairs of contacts and arranged in the longitudinal direction of the housing drive.

Fig. 2

schematically shows the orthogonal pin arrangement of the relay of Figure 1.

Fig. 3

schematically shows two closers in the open rest position.

Fig. 4

shows a closer and a normally closed at rest.

Fig. 5

shows a view of a contact spring with integrated foot and pin.

Fig. 6

shows a side view of the contact spring according to FIG. 5th

Fig. 7

shows a solid contact head.

Fig. 8

shows a perspective view of a relay according to the invention with the cover removed.

Fig. 9

shows a section of a relay with feet and stilts on a printed circuit board.

Fig. 10

shows a relay according to the invention with four contact pairs.

Fig. 11

shows a relay according to the invention with three contact pairs.

The number of contact pairs 13 in a relay 11 is not important for the adjustment of a pair of contacts 13, but for the size and usability of the relay 11 is of crucial importance.

The relay 11 also has an electromagnetic drive 15 with a coil 17, a yoke 19, a hinged armature 21 and a dashed core 23. It further has a cooperating with the drive arm 25 of the hinged armature 21 drive comb 27th

The coils 17 are wound as full as possible. However, they can have different numbers of turns. Depending on the desired coil voltage, the number of turns and the wire diameter, and thus the coil resistance can be adjusted. Practically constant, however, is the AW number (ampere * turns), which corresponds to the coil power. This AW number is at least 310 AW in the present embodiment. Depending on the wire thickness, the AW number may exceed this 310 AW because the coil is filled. With a coil ratio of 4.6 to 5 to 1, in particular 4.7 to 4.8 to 1, and with an armature ratio of 1 to 3.5 to 3.7, in particular from 1 to 3.6, there is a sufficient Force the coil to operate the six pairs of contacts 13. The following list shows a small selection of possible coil designs: coil power number of turns Wire Diameter coil resistance Wire resistance wire length V N mm ohm Ohm / m m 5 2360 12:16 43.2 0.8502 50.8 15 6250 0.1 300 2177 137.8 24 11300 0075 1000 3869 258.5 110 52000 0036 20900 16.79 1244.8

Each contact pair 13 has a contact spring 29 and a mating contact 31. The contact springs 29 are anchored with a foot 33 in a housing 35, in which housing 35 and the drive 15 is housed. To anchor the Feet 33 are in the housing 35 for each foot a block 37, and in block 37 each have a slot 39 is formed.

The mating contacts 31 and the contact springs 29 are each equipped with a pin 41 (see Figures 6 and 7). With these pins 41, both the contact springs 29 and the mating contacts 31 pierce the bottom 43 of the housing 35. In the lower view of the relay 11 shown in FIG. 2, the orthogonal arrangement of the pins 41 is shown. The pins 41 marked with an ellipse are the foot pins of the contact springs 29. The pins marked with a rectangle are the pins of the fixed mating contacts. The pins marked with a triangle are the connection pins of the drive. The foot pins of the contact springs 29 and the connection pins of the drive 15 along the two opposite narrow sides of the bottom 43 lined up. The six pins of the mating contacts are each three on a parallel to the narrow sides of the floor and two each on a straight line by two opposing foot pins of the contact springs.

The pitches between the pins of the contact pairs 13 are in the direction of the width of the housing in each case 7.5 mm and in the direction of the length of the housing 35 each 15.8 mm. The connection pins of the drive are in the two corners of the housing bottom 43, which are not equipped with foot pins of the contact springs and at a distance of 15.5 mm from the next pin of the contact pairs thirteenth

The contact springs 29 have, as shown in Figures 5 and 6, a foot 33 which is formed by folding over the sheet of the contact spring. Integral with the foot 33, the pin 41 is formed, which is therefore also twice as thick as the contact spring. The contact spring 29 then has at the foot 33 a spring portion 45, which extends to the contact head 47. The spring portion 45 has a minimized cross-section of a highly conductive spring material. The cross-section and the material are optimized in terms of thermal conductivity and electrical conductivity. In the area of the contact head 47, the contact spring is slightly widened. Above the contact head, the contact spring has a drive end 49 in the form of an extension with a tapered cross-section. The drive end 49 has a nearly half as large cross-section as the spring portion 45. The drive end 49 is also bent into a hook, so that the contact spring 29 can not fall out of the drive comb 27 at a spring break.

The mating contacts 31 are fixed contact parts which are fixed in the housing 35 in a well-defined position. The mating contacts 31 are stamped parts of relatively thick sheet metal, on which a pin 41 is integrally formed (FIG. 7), and which are equipped with a contact head 47. The contact heads are riveting heads for all contacts. For attaching the contact heads in each contact spring and in the sheet metal part of the mating contact 31 each punched out a hole through which the rivet head is inserted. The inserted end is then hammered to rivet the contact head positive and non-positive.

The relay shown in Figure 8 is shown without a lid. About this relay, therefore, the assembly is finally a lid plugged, which locks with the bottom part, in which the drive and the contact pairs are arranged, and closes the housing. The relay designation and relay specifications can be written on the cover.

The following parts are therefore shown in FIG. 8:

The bottom part 51 with a bottom 43 and a partitioned by walls in chambers for the pairs of contacts and the drive, as well as with blocks 37,53 for anchoring the contacts 29,31 of the contact pairs 13;
the inserted in the bottom part 51 drive 15, of which the coil 17, the yoke 19 and the hinged armature 21 can be seen;
four Schliesser contact pairs 13, each with a relaxed, stretched contact spring 29 and a fixed mating contact 31;
two NC contact pairs 13, each with a tensioned contact spring 29 and a fixed counter-contact 31;
a drive comb 27 which is in abutment with the drive arm 25 of the hinged armature 25, and in which the drive ends of the contact springs 29 are housed. For each contact spring a separate chamber is formed in the drive comb.

The drive comb 27 is further equipped with wings 28. These wings 28 extend the creepage and especially the air gaps between the adjacent contact pairs 13th

The relay 11 according to FIG. 8 measures 52.4 × 32.3 × 9.9 mm without a cover. Add to the height still, as shown in Figure 9, the Abstandfüsschen 53 and the lid. On the underside of the bottom part 51 Abstandfüsschen 53 are formed, which protrude 0.5 mm. In addition, the relay stilts 55. The stilts 55 are slightly conical truncated cones or circular cylindrical pins on the underside of the bottom part 51, which protrude by 1.2 mm. This design of both distance feet 53 and stilts 55 has the advantage that the relay can be arranged in two different distances to a circuit board 57. If SMD components can be arranged under the relay base, then the relay is placed on the stilts 55 (circuit board 57 drawn with broken lines). If, however, the height should be as low as possible, the relay 11 can also be placed on the spacer feet 53 (board 57 shown in solid lines). The stilts could be broken away so that the relay can be placed on the spacer feet. It will, however, much easier in the board 57 in addition to the holes for the pin connections holes 59 provided for the stilts 55.

The indicated in Figure 9 cover 59 encloses the bottom part 51 of the relay 11 around. To seal the relay 11 with a potting compound a potting 61 is formed circumferentially between the lid 59 and the bottom part 51.

As in FIGS. 1, 2 and 8, the relay according to the invention can have two rows of contact pairs which are symmetrical to one another, or only a single row of contact pairs. In Figures 10 and 11, such a four-contact and three-contact relay are shown in perspective. In these, the length of the coil and the housing in the direction of the length of the coil is practically halved with respect to the relay according to Figure 8. The length of the relay according to Figure 10 is also extended by a contact pair. As a result, the length of the four-contact relay is 7.5 mm longer than the width of the six-contact relay.

The dimensions of the relay are as follows: contacts Height (without pins and distance feet) Dimension parallel to core (with lid) Dimension perpendicular to core (with lid) 1 opener, 2 closers 10.5 mm 29.5 mm (width) 33.6 mm 1 opener, 3 closers 10.5 mm 29.5 mm (width) 41.1 mm 2 openers, 4 closers 10.5 mm 53.8 mm (length) 33.6 mm 2 openers, 6 closers (not shown) 10.5 mm 53.8 mm (length) 41.1 mm

The dimension perpendicular to the core of the coil is composed of 7.5 mm between two contact pairs of a row and 18.5 mm for the drive, the housing and the distance between the drive and NC. From the one outside of the relay that runs along the drive to the first pin (the opener), 16.9 mm are required. From the last pin to the opposite outside 1.6 mm are needed.

In the other direction, the pins of a contact pair have a gap of 15.8 mm, the pin of the contact spring to the near edge of the relay 3.1 mm. The pin of the fixed contact has a distance to the opposite edge of 10.5 mm. In the double-row relay, the pins of the fixed contacts of the two rows are 15.8 mm apart.

This mass includes the lid, which is applied on the five sides that it covers, each 0.6 mm.

For the single-row relays, the coil data can be given as examples as follows. Further interpretations of the coils are of course possible. The coil is 18.5 mm long, has a diameter of 9 mm, and four contact pairs aim for an AW number of 200 or more.

Relay with four contact pairs: coil power number of turns Wire Diameter Coil resistance Wire resistance wire length V N mm ohm Ohm / m m 12 3700 0085 240 3012 79.7 15 4050 12:08 300 3401 88.2 24 7400 12:06 960 6286 152.7

List of reference numbers:

11 relay 35 casing 13 contact pair 37 block 14 NC contact pair 39 Slot in block 37 for the foot 15 drive 41 contact pin 17 Kitchen sink 43 Bottom of the housing 35 19 yoke 45 Spring part of the contact spring 29th 21 toogle 47 contact head 23 core 49 Drive end of the contact spring 29th 25 Drive arm of the tilting armature 21st 51 Bottom part of the housing 35th 27 driving comb 53 Standfüsschen 28 Wing on drive comb 27 55 stalk 29 contact spring 57 PCB 31 solid counter contact 59 Cover part of the housing 35th 33 Foot of the contact spring 29 61 casting channel

Claims (17)

A positively driven relay (11), comprising a housing (35) whose height is less than its width and whose width is less than its length,
full: ■ an electromagnetic drive which fills the length or width of the relay (11) a coil (17) having an elongated core (23) made of a magnetically soft iron, and a winding around the core (23), and - Includes a hinged armature (21);
which winding has a height of the housing (35) practically filling diameter, and
which hinged armature (21) has a drive arm (25) extending in the direction of the core and cooperating at its free end with a drive comb (27); ■ a plurality of pairs of contacts (13) which are each formed by a contact spring (29) and a fixed or spring-shaped mating contact (31), which contact springs (29) - have a foot (33) and a free drive end (49), and a contact head (47) between the foot (33) and the drive end (49), - In each case with the foot (33) at spaced apart points along a direction perpendicular to the direction of the core side of the housing in the housing (35) are anchored, and - extend in the direction of the core (23), and - with the drive ends (49) in positive-guiding engagement with the drive comb (27) are; Contact pins (41) for the contact pairs (13) and for the drive (15), which contact pins project out of the housing (35) perpendicular to a width and length-defined surface of the housing,
at which relay ■ an opener is arranged directly next to the armature (21), the contact spring (29) in each position of the armature at least approximately parallel to the drive arm (25) of the hinged armature (21); and ■ a partition wall (63) between the hinged armature (21) and the opener (14) at least in the region between the contact heads of the opener and the drive comb (27) approximately parallel to the drive arm (25) of the hinged armature (21) in its farthest from the coil Position runs. Relay according to Claim 1, characterized in that the pins (41) are positioned in a grid orthogonal to the length and width of the relay, the pins (41) of the contact springs (29) at a small distance from an edge of the relay and the pins ( 41) of the mating contacts (31) are arranged at a greater distance from this edge, and that the pins (41) of adjacent contact pairs (13, 14) perpendicular to the direction of the core are each at the same distance from 7.3 to 7.7, preferably 7.4 to 7.6, particularly preferably of 7.5 mm. Relay according to Claim 1 or 2, characterized in that the fixed mating contact (31) of the opener (14) adjoining the drive deviates approximately parallel to the drive arm (25) of the hinged armature (21) in a direction orthogonal to the housing (35) from the coil (17) farthest position is rotated. Relay according to one of the preceding claims, characterized in that the dimension required for the drive perpendicular to the direction of the core (23) between the outside of the relay along the coil (17) and the pin (41) of the contact spring (29) of the drive (15) adjoining opener (14) measures a maximum of 17.8, preferably a maximum of 17.3, particularly preferably a maximum of 17.0 mm. Relay according to one of the preceding claims, characterized in that its height measures a maximum of 12 mm, preferably a maximum of 11 mm, and in which the diameter of the coil (17) measures 8 to 10 mm, preferably 8.5 to 9.5 mm. Relay according to one of the preceding claims, characterized characterized in that on the drive comb (27) between the contact spring (29) of the opener (14) and the contact spring (29) of the adjoining this closure (13) is formed a the air and creepage distances between these contact springs extending wings (28). Relay according to one of the preceding claims, characterized in that the housing (35) and a core jacket consists of a liquid crystal polymer and the housing (35) at least in the region of the drive (15) wall thicknesses of at most 0. 7 mm, in particular for the dimensions of Relay relevant walls in the interior of the housing (35) have wall thicknesses of a maximum of 0.6 mm. Relay according to one of the preceding claims, characterized in that the contact spring (29) of the opener (14) and the contact spring (29) of the contactor pair (13) adjacent thereto converge from its foot (33) towards its head (47) run. Relay according to one of the preceding claims, characterized in that the contact springs (29) in the region of the free drive ends (49) have a smaller cross section than between the foot (33) and the contact head (47), and these via the contact head (47). projecting tapered drive ends (49) have a length of 4 to 7 mm, preferably from 5 to 6 mm in order to ensure a Nachfederweg, for example, from 0.3 to 0.7 mm. Relay according to one of the preceding claims, characterized in that the deviation of the direction of the relaxed contact springs (29) from an orthogonal orientation to the housing (35) is achieved by an alignment of a slot (39) formed on the housing (35) in a block (37). for receiving the foot (33) of the contact spring (29) is predetermined. Relay according to one of the preceding claims, characterized in that there are two rows of contact pairs (13), - The drive ends (49) of the contact springs (29) contact pairs (13) of one row the drive ends (49) of the contact springs (29) of the other row are directed against, and in a common drive comb (27) intervene, - The coil (17) fills the length of the housing, and - The drive arm (25) of the hinged armature (21) is approximately half as long as the length of the coil (17) and actuated at its end the drive comb (27). Relay according to Claim 11, characterized in that each row has an opener (14) and two further contact pairs (13), and that the length of the relay measures a maximum of 56 mm, preferably a maximum of 54.5 mm, and the length of the coil at least 40 and at most 46 mm, preferably at least 42 and at most 44 mm. Relay according to one of claims 11 or 12, characterized in that the width of the relay measures at most 35 mm, preferably at most 34 mm and the feet (33) of the contact springs (29) and also the pins (41) in the width direction of the housing (35) have a minimum grid spacing to each other, each measuring between 7.3 and 7.7 mm, preferably between 7.4 and 7.6 mm. Relay according to one of claims 11 to 13, characterized in that the pins (41) are arranged for the contact pairs in a rectangular grid, the pins (41) at the feet (33) of the contact springs (29) are arranged on the edge of the housing and the pins (41) for the fixed mating contacts (31) are arranged symmetrically to a width extending in the direction of the width of the housing (35) and in the direction of the length of the housing (35) have a grid spacing of at least 12 and at most 18 mm to each other, preferably the same Distances between the pins (41) of the fixed mating contacts (31) of the two rows as between the pins (41) of the mating contact (31) and the contact spring (29) of a contact pair (13) of each row. Relay according to one of claims 11 to 14, characterized by an AW number between 260 and 340, preferably between 300 and 320, and by a power of 0.45 to 0.85, preferably from 0.5 to 0.8 watts. Relay according to one of the preceding claims, comprising a housing (35) having on a housing bottom Abstandfüsschen (53) for spacing the relay (11) of a circuit board (57), characterized by Stilts (55) on the underside of the housing, which protrude more than the Distanzfüsschen (53). Relay according to Claim 16, characterized in that the stilts (55) protrude 1 to 1.5 mm and therefore project beyond the spacing feet (53) by 0.5 to 1 mm.

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