Bistable electromagnetic relayThe utility model relates to a kind of bistable electro magnetic relay that adopts the mechanical caging mode, belong to a kind of low-voltage electrical apparatus Switch.
Existing common electromagnetic relay generally is made up of magnetizing coil, armature, elastic spring group etc., when relay passes to electric current, armature is by the adhesive of magnetizing coil institute, make the switch state of elastic spring group, and have only keep always this drive current could keep this moment state, in case power failure or outage, armature promptly discharges, and on off state can't be kept.Therefore, need consume bigger energy during common electrical magnetic relay operate as normal, require magnetizing coil can bear long operating current.Just power consumption when having the electromagnetic relay of some bistable structures to adopt some locking mechanisms to guarantee its state exchange in recent years, not power consumption during non-conversion, these locking mechanisms have the method for permanent magnet adhesive, also the method for useful mechanical caging.But what the method that adopts the permanent magnet adhesive had exists weak point at magnetic circuit system, causes energy conversion rate low, and permanent magnet is had stronger demagnetizing effect, influences the life-span; The textural more complicated that has, volume is bigger, complex process.Adopt the method for mechanical caging also to have textural more complicated, manufacturing process is also complicated, needs parts such as self-locking device and release, has influenced converting sensitivity and reliability, and bistable structure in the past often needs two-way control circuit simultaneously.
The purpose of this utility model is in order to overcome the shortcoming of above-mentioned existence, and a kind of employing mechanical lock mechanism is provided, and has the bistable electro magnetic relay of memory, characteristics such as energy-conservation.
The purpose of this utility model is finished by following technical solution, promptly above magnetizing coil, be provided with the self-locking framework, be mounted with lever swing spare by rotating shaft on this self-locking framework, the top of this swing component is the long-armed of laminated structure, its end is stretched in the superincumbent swinging chute and can be moved, and the bottom contacts with each other by contact and armature and elastic spring group.The above-mentioned swinging chute of the utility model is a heart type rail groove, and a, b, four angle fulcrums of c, d are arranged respectively, and swing component 10 normal planes of oscillation are the center line a-a vertical plane on heart type rail groove plane.
Description of drawings is as follows:
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is a wobble lock structural scheme of mechanism of the present utility model.
Fig. 3 is a swing state schematic diagram of the present utility model.
Below will the utility model is further introduced: Fig. 1 by accompanying drawing, on bobbin 1, be wound with coil 2, be fixed with iron core 3 in the middle of it, formed magnetizing coil 4, its top is fixed with skeleton 5, this skeleton 5 is provided with the armature 6 that can swing, one end is close to iron core 3, the other end with contact from lock set 7 and elastic spring group 8, each contact 9 is external by the contact on the base plate on the elastic spring group 8, from lock set 7 fixed in position on skeleton 5, see Fig. 2-Fig. 3, it is to have a lever swing spare 10 to be placed on the self-locking framework 12 by rotating shaft 11, and the top of swing component 10 is the long-armed of laminated structure, its end points stretches in the swinging chute 13 on the framework 12 in the above, this swinging chute 13 is a heart type rail groove, and a is arranged respectively, b, c, four angle fulcrums of d, swing component 10 normal planes of oscillation are the center line a-a vertical plane on heart type rail groove plane, and this swing component 10 is in the nonelastic substantially bending of plane of oscillation, and in the vertical direction of plane of oscillation elastic bending preferably should be able to be arranged.The bottom of swing component 10 is stretched and is connected with contact 14, this contact 14 stretches out outside self-locking framework 12 and contacts with elastic spring group 8 and armature 6, rotating shaft 11 cross-under are in the middle and lower part of swing component 10, swing component 10 is formed go up long-armed and following galianconism, like this, the less displacement meeting of bottom contact 14 causes the bigger displacement in upper end, has the displacement enlargement effect.During use, work as energized, magnetizing coil 4 energisings produce magnetic attraction, make that armature 6 one end adhesive faces are held on the end face of iron core 3, simultaneously, the other end of armature 6 promotes the contact 14 of swing component 10 bottoms, and the last long-armed of swing component 10 moved clockwise, top ends is shifted to the b point from a point of heart type rail groove, the switch state of elastic spring group 8 is in a kind of moving state at this moment, after power supply disconnects, the magnetic attraction of magnetizing coil 4 disappears, under the elastic force effect of elastic spring group 8, long-armed end slides onto the c point and is lockable from the b point on the swing component 10, at this moment, on off state is kept ortho states, thereby has finished the conversion first time of on off state.When second time during energized, magnetizing coil 4 produces magnetic attraction once more, promoting swing component 10 once more by armature 6 continues to shift to the d point from the c point, after the outage, under the 8 elastic force effects of elastic spring group, swing component 10 upper ends then slide onto a point and are lockable from the d point, have finished the conversion second time of on off state.Said process has been formed a switch circulation, if, continue energized, will begin next switch circulation.
The utility model compared with prior art has simple in structurely, easy to make, and volume is little, and is in light weight, easy to use and reliable, and the characteristics such as memory, power saving function are arranged.