Reed relay
AssigneesMatsushita Electric Works, Ltd., Hans Sauer
InventorsHiromi Nishimura, Kenji Ono, Minoru Shibata
Life of this patent
Estimating the term…
Abstract
A reed type relay comprises a frame forming a cavity and having coil terminals. A bobbin assembly containing a coil is mounted in the cavity, this assembly having a flange at each end. A pair of magnetic poles energized by a permanent magnet as well as by the coil is pressed into one of these flanges and the base end of a reed is pressed into the other. This reed is elongated and extends along the bobbin assembly with its tip located between the poles so as to be movable into engagement with each of them.
Claims21
A reed type relay comprising an assembly of two, separately constructed, structural elements,
- (a) a first of such elements comprising a frame of molded electrically insulating material having a plurality of metallic frame terminals sealingly embedded therein, said frame defining a cavity,
- (b) the second of such elements consisting of a relay sub-assembly comprising
- (i) an elongated bobbin of molded electrically insulating material,
- (ii) a coil wound on such bobbin and having coil terminals on the sub-assembly,
- (iii) a pair of magnetic poles mounted at one end of the bobbin,
- (iv) a plurality of electrical switch contacts associated with said poles,
- (v) a plurality of contact terminals on the subassembly respectively electrically connected to said switch contacts,
- (iv) permanent magnet means cooperating with said poles to energise the same magnetically, and
- (vii) an elongated reed extending along said bobbin, a base end of said reed being mounted at the other end of the bobbin in a free end of said reed being located between said poles so as to be movable into engagement with said switch contacts upon energisation of the coil,
- (c) said relay sub-assembly being mounted in said cavity with electrical contact between said frame terminals, on the one hand, and said coil terminals and contact terminals, on the other hand.
A relay according to claim , wherein the base end of the reed comprises a mounting plate having projections, said other end of the bobbin having cavities for receiving said projections.
A reed type relay comprising
- (a) a frame having a cavity therein and provided with coil terminals,
- (b) a bobbin assembly mounted in said cavity and having a coil wound thereon and a flange at each end,
- (c) a pair of magnetic poles pressed into a first said flange,
- (d) a permanent magnet for magnetic cooperation with said poles, and
- (e) an elongated reed extending along said bobbin assembly with its tip located between said poles so as to be movable into engagement therewith upon energisation of said coil,
- (f) said reed having a base end pressed into the other said flange,
- (g) in which the reed is a contact tongue cooperating with fixed contacts each connected to one of a plurality of contact terminals, the permanent magnet being being disposed in the vicinity of the fixed contacts,
- (h) in which the contact tongue is made from wire and is so formed that its contact region at one end has a convex cross-section, the contact tongue being housed in an interior space defined by the frame, and
- (i) in which projections provided on a mounting plate at a foot end of the contact tongue are received in a fixing groove at an entrance to an opening through the bobbin assembly, the coil being housed in said interior space.
A reed type relay comprising
- (a) a frame having a cavity therein and provided with coil terminals,
- (b) a bobbin assembly mounted in said cavity and having a coil wound thereon and a flange at each end,
- (c) a pair of magnetic poles pressed into a first said flange,
- (d) a permanent magnet for magnetic cooperation with said poles, and
- (e) an elongated reed extending along said bobbin assembly with its tip located between said poles so as to be movable into engagement therewith upon energisation of said coil,
- (f) said reed having a base end pressed into the other said flange,
- (g) in which the reed is a contact tongue cooperating with fixed contacts each connected to one of a plurality of contact terminals, the permanent magnet being disposed in the vicinity of the fixed contacts,
- (h) in which the contact tongue is made from wire and is so formed that its contact region at one end has a convex cross-section, the contact tongue being housed in an interior space defined by the frame, and
- (i) in which an exposed part of one of said contact terminals in said interior space comprises two parts, one of which parts is bent at right angles to the other to form a vertical guide surface for the permanent magnet.
Dependencies are inferred from the claim text.