Relay

Abstract

A forcibly guided relay is disclosed, with a housing, whose height is smaller than its width and whose width is smaller than its length. With this, the relay comprises an electromagnetic drive filling the length or the width of the relay, with a clapper-type contactor which comprises a drive arm which extends in the direction of the core and at its free end cooperates with a drive cam; several contact pairs, which are in each case formed by a contact spring and a fixed or spring-like counter-contact said contact springs extending in the direction of the core, and with the drive ends being in a forcibly guided engagement with the drive cam. With this relay a break contact is arranged directly next to the contactor, whose contact spring in each position of the contactor runs approximately parallel to the drive arm of the clapper-type contactor; and a separating wall is present between the clapper-type contactor and the break-contact, at least in the region between the contact heads of the break-contact, and the drive cam, runs approximately parallel to the drive arm of the clapper-type contactor in the activated position spread away from the coil.

Description

BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 schematically shows a plan view of an opened relay with three contact pairs lying opposite one another, and with a drive arranged in the longitudinal direction of the housing.

FIG. 2 schematically shows the orthogonal pin arrangement of the relay according to FIG. 1.

FIG. 3 schematically shows two make-contacts and a break-contact in the idle position.

FIG. 4 shows a make-contact and a break-contact in the idle position.

FIG. 5 shows a view of a contact spring with an integrated foot and pin.

FIG. 6 shows a lateral view of the contact spring according to FIG. 5.

FIG. 7 shows a fixed contact head.

FIG. 8 shows a perspective representation of a relay according to the invention with a removed cover.

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.

Claims

1. A forcibly guided relay, with a housing, whose height is smaller than its width, and whose width is smaller than its length, comprising: an electromagnetic drive filling the length or width of the relay, which comprises a coil with an elongate core of a magnetic soft iron, and a winding present around the core, anda clapper-type contactor; said winding having a diameter practically filling the height of the housing, andsaid clapper-type contactor comprising a drive arm which extends in the direction of the core and which at its free end cooperates with a drive;several contact pairs, which in each case are formed by a contact spring and a fixed or spring-like counter-contact,said contact springs comprising a foot and a free drive end, as well as a contact head between the foot and the drive end,being anchored in the housing, in each case with the foot at locations along a side of the housing lying perpendicular to the direction of the core, said locations being distanced to one another;extending in the direction of the core, andwith the drive ends are in forcibly guided engagement with the drive cam;contact pins for the contact pairs and for the drive, said contact pins projecting out of the housing perpendicular to a surface of the housing defined by the width and length,

2. A relay according to claim 1, wherein the pins are positioned in a raster orthogonal to the length and width of the relay, the pins of the contact springs are arranged at a small distance to an edge of the relay, and the pins of the counter-contacts at a larger distance to this edge, wherein the pins of adjacent contact pairs in each case have an equal distance of 7.3 to 7.7, preferably 7.4 to 7.6, particularly preferably of 7.5 mm, perpendicular to the direction of the core.

3. A relay according to claim 1, wherein the fixed counter-contact of the break-contact bordering the drive, is rotated deviating from an alignment orthogonal to the housing, approximately parallel to the drive arm of the clapper-type contactor in its position which is most remote from the coil.

4. A relay according to claim 1, wherein the dimension perpendicular to the direction of the core between the outer side of the relay running along the coil, and the pin of the contact spring of the break-contact bordering the drive, which is required for the drive, measures maximal 17.8, preferably maximal 17.3, particularly preferably maximal 17.0 mm.

5. A relay according to claim 1, wherein its height is maximally 12 mm, preferably maximally 11 mm, and with which the diameter of the coil measures 8 to 10 mm, preferably 8.5 to 9.5 mm.

6. A relay according to claim 1, wherein a wing extending the sparking and creepage paths between these contact springs is formed on the drive cam between the contact spring of the break-contact and the contact spring of the make-contact adjacent to this.

7. A relay according to, claim 1, wherein the housing and a core casing consist of a liquid crystal polymer, and the housing at least in the region of the drive has wall thicknesses of maximal 0.7 mm, in particular walls in the inside of the housing which are relevant to the dimensions of the relay, have wall thicknesses of maximal 0.6 mm.

8. A relay according to claim 1, wherein the contact springs of the break-contact and the contact springs of the make-contact pair adjacent to this, run in a convergent manner from their foot to their head.

9. A relay according to claim 1, wherein the contact springs in the region of the free drive ends have a smaller cross section than between the foot and the contact head, and these tapered drive ends projecting beyond the contact head have a length of 4 to 7 mm, preferably of 5 to 6 mm, in order to ensure an overtravel of for example 0.3 to 0.7 mm.

10. A relay according to claim 1, wherein the deviation of the direction of the relaxed contact springs from an alignment orthogonal to the housing is predefined by an alignment to a slot formed on the housing in a block, for receiving the foot of the contact spring.

11. A relay according to claim 1, wherein two rows of contact pairs are present,the drive ends of the contact springs of contact pairs of the one row are directed counter to the drive ends of the contact springs) of the other row, and engage into a common drive cam,the coil fills the length of the housing, andthe drive arm of the clapper-type contactor is approximately half as long as the length of the coil, and with its end actuates the drive cam.

12. A relay according to claim 11, wherein each row comprises a break-contact and two further contact pairs, and that wherein the length of the relay measures maximally 56 mm, preferably maximally 54.5 mm, and the length of the coil measures at least 40 and at the most 46 mm, preferably at least 42 and at the most 44 mm.

13. A relay according to, claim 11, wherein the width of the relay measures 35 mm at the most, preferably 34 mm at the most, and the feet of the contact springs as well as the pins, in the direction of the width of the housing, have a minimal raster distance to one another, which measures in each case between 7.3 and 7.7 mm, preferably between 7.4 and 7.6 mm.

14. A relay according to claim 11, wherein the pins for the contact pairs are arranged in a rectangular raster, the pins at the feet of the contact pins are arranged on the housing edge, and the pins for the fixed counter-contacts are arranged symmetrically to a middle axis running in the direction of the width of the housing, and in the direction of the length of the housing have a raster distance of at least 12 and at the most 18 mm to one another, preferably have the same distances between the pins of the fixed counter-contacts of the two rows, as between the pins of the counter-contact and the contact spring of a contact pair of each row.

15. A relay according to claim 11, wherein an AW-number between 260 and 340, preferably between 300 and 320, and by a power of 0.45 to 0.85, preferably of 0.5 to 0.8 Watts.

16. A relay according to claim 1, with a housing which on a housing lower side comprises spacer feet for distancing the relay to a circuit board, with stilts on the housing lower side which project more than the spacer feet.

17. A relay according to claim 16, wherein the stilts project 1 to 1.5 mm and therefore project beyond the spacer feet by 0.5 to 1 mm.

18. A relay according to claim 2, wherein the fixed counter-contact of the break-contact bordering the drive, is rotated deviating from an alignment orthogonal to the housing, approximately parallel to the drive arm of the clapper-type contactor in its position which is most remote from the coil.

19. A relay according to claim 3, wherein the dimension perpendicular to the direction of the core between the outer side of the relay running along the coil, and the pin of the contact spring of the break-contact bordering the drive, which is required for the drive, measures maximal of between 17.0 and 17.8 mm.

20. A guided relay with a housing of a height smaller than its width, the width being smaller than its length, comprising: an electromagnetic drive filling the length or width of the relay, which comprises a coil with an elongate magnetic soft iron core, a winding being present around the core, anda clapper-type contactor comprising a drive arm which extends in the direction of the core and which at its free end cooperates with a drive cam;several contact pairs, which in each case are formed by a contact spring and a fixed or spring-like counter-contact, said contact springs comprising a foot and a free drive end, the drive ends being in engagement with the drive cam;contact pins, said contact pins projecting out of the housing perpendicular to a surface of the housing defined by the width and length,