WO2018193474A1 - Manual relay switch - Google Patents
Manual relay switch Download PDFInfo
- Publication number
- WO2018193474A1 WO2018193474A1 PCT/IN2018/050234 IN2018050234W WO2018193474A1 WO 2018193474 A1 WO2018193474 A1 WO 2018193474A1 IN 2018050234 W IN2018050234 W IN 2018050234W WO 2018193474 A1 WO2018193474 A1 WO 2018193474A1
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- WO
- WIPO (PCT)
- Prior art keywords
- relay
- switch
- contact
- relay switch
- push
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/18—Movable parts of magnetic circuits, e.g. armature
- H01H50/32—Latching movable parts mechanically
- H01H50/326—Latching movable parts mechanically with manual intervention, e.g. for testing, resetting or mode selection
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/002—Monitoring or fail-safe circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/18—Movable parts of magnetic circuits, e.g. armature
- H01H50/34—Means for adjusting limits of movement; Mechanical means for adjusting returning force
Definitions
- the present disclosure relates to a field of switching devices. More particularly, the present disclosure relates to a switching device for controlling electrical equipment automatically and enabling a manual threshold ON' and force breaking OFF' of magnetic sticking of the dipole contacts in a circuit.
- a relay switch is the back bone in most of the automatic electrical power switching.
- the relay switch is an electromagnetic switch, operated by a safe low-voltage small electric current, which in turn ON or OFF a much larger electric current in a separate line.
- the relay switch is used for larger current switching.
- the relay switch is used to energize more power consuming devices with delicate switches on the dash.
- the relay switch is used for energizing that entire device or a part of the device as per the programs or readings of sensors. That is, relay switching is controlled only by the power input provided to its electromagnetic coil controlled by other logic circuits. In other words, a user has no direct control over working rather than switching it ON for automatic working or do total shutdown.
- the simplest readymade automatic protection switch is MCB. But that is useful only for over amp protection. Another simple one is thermostats. But that could be only for overheating and should be an integral part of the product and cannot be applicable to everywhere as a standalone add-on accessory for circuit controlling. Many places, one need to automate for controlling devices for sensing high or low movements etc. However, there is no such all-in-one device other than some basic PCBs used for the above purpose. For example, hands free control of water pump cannot be done by the MCB or normal DP switch. Relays always need a logic circuit to be operated with and a DC unit to supply its power.
- Power relays are the real electrical power switching and protection unit in all of the electrical and electronic products having some sort of automation in it.
- the power relays are used for protection, reclosing, regulating, monitoring and providing auxiliary power supply.
- the power relays are available in many varieties for particular needs as Electromagnetic Relays, Solid State Relays, Hybrid Relay, Thermal Relay, Read Relay etc.
- the power relays work mainly as attraction type or induction type and all of them respond to one or more electrical quantities like voltage or current such that they open or close the contacts of the circuits.
- Protective relay continuously monitor these parameters: voltage, current, and power; and if these parameters violate from set limits they generate alarm or isolate that particular circuit.
- These types of relays are used to protect equipment like motors, generators, Invertors and so on.
- Electro-magnetic relays are most common and prominent among all relays.
- the electro- magnetic relays are constructed with electrical, mechanical and magnetic components, and have operating coil and mechanical contacts.
- the electro-magnetic relays permit flow of electricity from common to normally closed (NC) when not energized the coil and switch that to normally open (NO) when energized. It happens when the coil become a magnet and attracts the steel-plate / armature towards its pole. By the time the two sided common contact arm getting power from common pole through the leading wires, it breaks from NC and touches the NO. When the coil become magnet, it overcome the pulling power of a spring provided therein applying from opposite side of the hinge point which in fact keeps the common contact always in contact with NC.
- Magnetized coil operation shall be with adequate speed, but if we allow closing that circuit manually with our fingers, that cannot be fast enough as minimum requirement to that relay. Low voltage starting trigger may not have that fast action.
- the breaking on such condition also shall be very week because the pulling power of reverse pulling spring also should be week for permitting automatic sticking with magnetic coil.
- the main demerit is that one cannot do force-break of the poles if their contacts get stuck/burned each other. To avoid this issue, relay manufacturers always provide more capacity and quality contacts than the relay really required. One can provide silver made or coated button even for low powered relay which is generally not utilized.
- the relay switch comprises dipole contacts spaced with a gap to have electrical contact.
- the relay switch comprises a push plate coupled to a manual relay switch. The push plate enables magnetic sticking of the force dipole contacts.
- the manual relay switch is operated to actuate the push plate to break magnetic sticking of the dipole contacts in order to increase gap between the dipole contacts.
- FIG. land 2 illustrate a schematic diagram of a relay system, in accordance with one embodiment of the present disclosure
- FIG. 3 A illustrates a circuitry diagram of the relay switch with minimal control circuits, in accordance with one embodiment of the present disclosure
- FIG. 3B illustrates an analogue logic circuit implementing the relay switch, in accordance with one embodiment of the present disclosure
- FIG. 4 illustrates a working mechanism of the threshold mechanism, in accordance with one embodiment of the present disclosure
- FIG. 5 illustrates a perspective view of a standard boxed relay, in accordance with one embodiment of the present disclosure
- FIG. 6 illustrates a perspective view of a relay box having modification to work in accordance with one embodiment of the present disclosure
- FIG. 7 and 8 illustrate threshold switching mechanism, in accordance with one embodiment of the present disclosure
- FIG. 9 illustrates a perspective view of a relay switch operated using two switches, in accordance with one embodiment of the present disclosure
- FIG. 10 illustrates a perspective view of a relay switch operated using single toggle switch, in accordance with one embodiment of the present disclosure
- FIG. 11 to 14 illustrate mechanism of auto-OFF of the locked manual-ON, in accordance with one embodiment of the present disclosure
- FIG. 15 illustrates a mechanism for automatic and manual adaptation to the relay switch, in accordance with one embodiment of the present disclosure.
- FIG. 16, 16A and 16B illustrate a single relay switch having push-ON, Pull-OFF mechanism, in accordance with one embodiment of the present disclosure.
- the relay switch comprises dipole contacts spaced with a gap to have electrical contact.
- the relay switch comprises a push plate coupled to a manual relay switch.
- the push plate enables magnetic sticking of the force dipole contacts.
- the manual relay switch is operated to actuate the push plate to break magnetic sticking of the dipole contacts in order to increase gap between the dipole contacts.
- FIG. 1 a perspective of a relay system 10 is shown, in accordance with one embodiment of the present disclosure. Further, referring to FIG. 2, a schematic diagram of the relay system 10 (inner portion shown in FIG. 1) is shown.
- electromagnetic relays are constructed with electrical, mechanical and magnetic components, and have operating coil and mechanical contacts.
- a connector 13 is to provide power to the relay coil.
- the electro-magnetic relays permit flow of electricity from common 14 to normally closed (NC / 14C) when not energized the coil and switch that to normally open (NO / 140) when energized.
- the common connector 14 is in connection with a wire 141 to the back side of the contact arm 15. It happen by the coil 11 become a magnet and attracts the steel -plate / armature 12 towards its pole. By the time the two sided common contact arm 15 getting power from common pole 14 through the leading wire 141, breaks form NC 14C and touch the NO 140. When the coil become magnet, it overcome the pulling power of the spring 109 applying from opposite side of the hinge point 105, which in fact keep the common contact 14 always in contact with NC 14C. [0033] In accordance with the present disclosure, a threshold is provided on starting to overcome issues discussed above. As represented in FIG. 2, a gap 17 between a relay coil tip 112 and the armature 12 is very small.
- the gap provided is small to ensure the armature 12 is in its magnetic catch area.
- the gap 18 between the common contact 15 and normally open contact 140 is still smaller to ensure these contacts touch first and having strong push each other by the time the gap 17 get nil.
- the gap 18 is not enough for making a good threshold for manual switching.
- the gap 18 in between NO (140) and common 15 is lesser than the magnetic capacity of relay coil 11.
- Threshold embodiment 99 is illustrated at the space 18. If the threshold embodiment 99 is single, it will come at center, in between the dipole contacts. It can be two separate ones directly acting to the common contacts 15. In other words, the threshold lever is made between the common contact 15 and normally open contact 140.
- the provision of threshold can be by any means from any side which is including from back side of the push plate 16B.
- the new level er embodiment 63 is for easy pushing down (force 61) the armature 12 to the magnetic pole 112 from the membrane 77 surface.
- the block 63 enables switching without much stretch of / displacement of the membrane 77. Minimal actions on the membrane will provide more life to it than harder ones.
- This new membrane embodiment 77 also enables sealing of the relay case 10 at the push plates / contacts' side 104. This air sealing is for making the relay a best switch even to use at fire hazardous area.
- the new elongated back-part 16B of the push plate 16, beyond the hinge 105, enables force breaking from magnetic sticking. That is, by making a push force 62, the push plate 16 allows to create a pullback force at front side 16A of push plate which can break the magnetic sticking any time. That is the force 62 acts as manual off to the relay. The magnetic force acts as the threshold in this offing work.
- the block 64 (it can be an upward bend of the 16B too) enables to apply the force from the same membrane level.
- FIG. 3A a circuitry diagram of the relay with its basic minimum circuits contain a DC unit and a logic circuit. It is known that relays work only according to the power providing to its coil either by the user with a small switch or by some electronic logic circuit. All such devices get that continues power from another source / switch. Without that, continues coil power one cannot get continues power output through the 'NO' of that main relay.
- the DC unit gets input power only from the NC contact of the main relay. In order to start that circuit, one need to apply manual force 61, to push the push-plate 16 to establish the common- NO contact.
- the pole switch 61 A will bypass the AC power to DC unit (SMPS) and provide DC power to the logic circuit. This is made available to get all the status readings without activating the main relay and thus on the actual device / motor. Thus it will show all the displays and warnings till the time of release that pressing.
- the back-up unit (B) also passes DC power to logic circuit through the parallel switch poles 61B.
- the dual pole switch 61 A & 61B can be used to provide status even in power failure times. Power from the cell will utilized only during such power failure times. The diodes Dl and D2 on the positive lines will prevent the undesired power flows between DC unit and back-up units.
- the dual pole switching 61 A & 6 IB which act before the manual force- On' action 61, can provide status outputs (from sensors) from the same start switch that is, even during power failure times.
- FIG. 3B a logic circuit implementing the relay switch is shown.
- two PCB relays are provided in the circuit before the output goes to main relay coil.
- PCB relay check 'YES' condition and the second one 'NO'. That is the first relay's NO get power only if the Y transistor gets a pulse. If so, it's NO pole will provide power to the second relay's common point which works according to the pulse-N.
- the main relay get power from its NC side and by the second relays activation will break the output to main relay. That is it check a condition of there is no pulse on 'N transistor.
- the Yes and No condition checking parts can be multiplied either as parallel or as serial according to the specifications we need and by taking pulse form appropriate sensors. NCI and NO2 are not using for the final relay's working, but those can be used for making faulty warnings either as sound or as display. All the outputs of the sensors also can be used for display for better understanding of the working conditions. It should be understood that the logic explained above can also be implemented using a digital or microprocessor method and such implementation is obvious to a person skilled in the art. [0039] FIG. 4is provided to explain a working mechanism of the threshold mechanism 99.
- the upper arm 98 having a built in hinge 94 with its bend plate 95.
- a threshold is obtained on every ON action. Further, it will enable fast contact establishment between common 14 and normally open 140. Fast hitting of contact will nullify the chances for generating spark between contact tips and getting it burned. Since the circuit is turned 'ON' manually; not by making magnet by powering its coil; only a small coil required to hold the armature on the magnet tip 112.
- FIG. 5 shows a perspective view of a standard boxed relay.
- the connector side 101 where all the external wires should connect is at top side.
- the bottom side is 102 where the spring part of the relay comes normally in present relay models.
- One of the long four sides is side- 104 where the push-plate 16 comes and its opposite side is 101 where relay coil comes.
- FIG. 6 shows a perspective view of a relay box 30, in accordance with one embedment of the present disclosure.
- the relay box 30 comprises a projection 31 at push plate 16 (side 104) by having a groove 32 inside.
- the spring 38 on the button leg which keep the push button away from push plate 16 but it will not go off because of the rivet 39.
- FIG. 9 shows a perspective view of a product concealing this new relay embodiment and how it is operated using two switches.
- the push button 4N directly triggers 3N and the push button 4F directly triggers 3F.
- Livers or cables may be used to trigger the push plate to start and stop the relay switch manually.
- FIG. 10 shows a perspective view of a product concealing this new relay embodiment and how it operated using one switch.
- the switch may include a toggle switch 55.
- the toggle switch 55 is balanced on both sides using a center pivot point 5P. As such. Pressing down will start the relay switch and pressing up will OFF the relay switch.
- the leg 57 press the relay switch 33N to activate NO of the relay and the leg 56 press the relay switch 33F for breaking the contact to NO.
- FIGS. 11 to 14 show the mechanism of auto-OFF of the locked manual-ON.
- FIG. 11 shows the switches' OFF condition or relay's normal working condition.
- Both the switches 6N and 6F are maximum out from the product case 100 with the spring thrust.
- stoppers 66 and 67 may be provided for the switches 6N and 6F, respectively to block the spring thrust.
- a movable plate 300 is provided in between product case and threshold relay which is having oval holes to pass the switches 6N and 6F.
- the stopper 66 When the user pushes start switch 6N to trigger the relay, the stopper 66 will push the moving plate 300 down against the spring thrust. But it normally triggers the relay / activates NO before the stopper 66 cross the moving plate 300, as shown in FIG. 12. As can be seen, the plate is moved downward and the oval hole 302 appeared down instead of 301 at top side to switch 3N. At the same time lock 66 not stuck with that bottom hole. In other words, gentle push will trigger the relay with the tip 33N, but the switch will not get locked with the manual stopper lock mechanism 66. If all the conditions are satisfied, then the relay will keep on in sticking / active state. Otherwise, the relay will get stopped immediately along with the release of finger from the switch 6N.
- the cavity 301 of the oval hole over to the switch 6F shows the plate is moved to top.
- This locking can be freed by pushing down the moving plate 300 by pushing the off button 6F.
- the locking fitment 67 which is slightly larger than the locking part 66, will push the moving plate down and auto releases the ON switch 6N, as shown in FIG. 14.
- Switch 6F not only release the ON-button to get the output broken, but also it will apply a plucking action 62 on the on the push plate 16B. Since there is guarantee of this force breaking, there is no need of another parallel switch to execute manual operation on requirement. Instead of keeping the moving plate 300 up with a spring thrust, it can keep down with gravity force. Then the locking part 66 and 67 should be at the top side of that switches 6N and 6F.
- FIG. 15 shows a mechanism for automatic and manual adaptation to the relay switch.
- the threshold and more gap 17 is needed between armature and coil. But to perform auto sticking with energized magnetic coil, the distance 17 should be less and there shouldn't have any threshold. To have both these feature on the same relay, it should have a distance adjustment mechanism as in the chamber 85B.
- the moving slating / jammer plate 87 which can be moved front and back with a screw through the hold 81 which lies between slanting cuts of push plate 16B and counterpart 80, enable this work.
- the back side of the push plate 16B) beyond the hinge point 105 will be high closer to the block 80 because it will be in pulling condition with a spring over there.
- FIGs 16, 16A and 16B show a single relay switch having push-ON, Pull-OFF mechanism.
- the single relay switch is used for manual-ON only and offing always supposed to be down automatically. As a result, there is no need of a separate off switch. However, for the need of force breaking when required, we need to keep that OFF provision.
- That feature can be incorporated to the same ON-switch as provisions of pulling form the normal position.
- the tip 70 of the switch 7N and the D-rings 73 of switch heads 71 and 72 enable the user a provision to pull the switch when required.
- the tip 33N of the push-On switch which hits the relay push plate 16A will have a provision to pull back the same when the switch pull further from its normal resting point enable a force for plucking / force breaking.
- the prolonged thread 74 and a bush 75 at its tip are one of the embodiments possible for such pulling back.
- the relay switch described above can be used for ON & OFF an electrical device manually as per the desire of the user and at the same time, provide automatic breaking of the circuit for the needs of safety, avoiding pilferages, wasting money etc.
- the relay switch undertakes safety on over-ampere as well as over/under voltage conditions, as in conventional electronic starter switches at the same time the relay switch can also provide desired actions on different sensor outputs, by checking pulses of contacts / touches, temperature, pressure, light, smoke, time, sound, movements etc.
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Abstract
A relay switch that is capable of manipulating positions of a push plate within the relay switch based on a threshold force is disclosed. In one example, force (61) is applied on front side (16A) of the push plate for activation of the relay and force (62) is applied on tail side (16B) of the push plate for deactivation of the relay. In another example, the forces may be applied as push & pull on the same side using a single switch. The increased gap 18 between the Normal Open (NO) contact and Normal Closed (NC) contact poles and the adaptation to optimize for manual as well as automatic mode with the help of a movable jammer plate 88, membranous sealing (77) of the contact chamber, single switch operation and so on are the innovative steps in this invention.
Description
MANUAL RELAY SWITCH
FIELD OF INVENTION [001] The present disclosure relates to a field of switching devices. More particularly, the present disclosure relates to a switching device for controlling electrical equipment automatically and enabling a manual threshold ON' and force breaking OFF' of magnetic sticking of the dipole contacts in a circuit. BACKGROUND
[002] It is known that a relay switch is the back bone in most of the automatic electrical power switching. The relay switch is an electromagnetic switch, operated by a safe low-voltage small electric current, which in turn ON or OFF a much larger electric current in a separate line. Generally, the relay switch is used for larger current switching. For example, in vehicles, the relay switch is used to energize more power consuming devices with delicate switches on the dash. But in many automatic machines, the relay switch is used for energizing that entire device or a part of the device as per the programs or readings of sensors. That is, relay switching is controlled only by the power input provided to its electromagnetic coil controlled by other logic circuits. In other words, a user has no direct control over working rather than switching it ON for automatic working or do total shutdown.
[003] Typically, most of the power electrical products come either with a heavy switch (Grinder, Mixer, Vacuum cleaner etc.) or with a soft / feather touch switch (Induction cooker, automatic washing machines etc.). Other products come without any switch, such as AC, refrigerator, water pumps etc. The devices discussed above are connected through external (heavy) toggle switches. Some people use Miniature Circuit Breaker (MCB) for more protection. Generally, such switching is provided on a single line. Single line breaking cannot be considered as safe as total circuit breaking. But double line MCB and Double Pole (DP) switches are more costly and is not adapted everywhere.
[004] The simplest readymade automatic protection switch is MCB. But that is useful only for over amp protection. Another simple one is thermostats. But that could be only for overheating and should be an integral part of the product and cannot be applicable to
everywhere as a standalone add-on accessory for circuit controlling. Many places, one need to automate for controlling devices for sensing high or low movements etc. However, there is no such all-in-one device other than some basic PCBs used for the above purpose. For example, hands free control of water pump cannot be done by the MCB or normal DP switch. Relays always need a logic circuit to be operated with and a DC unit to supply its power.
[005] Power relays are the real electrical power switching and protection unit in all of the electrical and electronic products having some sort of automation in it. The power relays are used for protection, reclosing, regulating, monitoring and providing auxiliary power supply. The power relays are available in many varieties for particular needs as Electromagnetic Relays, Solid State Relays, Hybrid Relay, Thermal Relay, Read Relay etc. The power relays work mainly as attraction type or induction type and all of them respond to one or more electrical quantities like voltage or current such that they open or close the contacts of the circuits. Protective relay continuously monitor these parameters: voltage, current, and power; and if these parameters violate from set limits they generate alarm or isolate that particular circuit. These types of relays are used to protect equipment like motors, generators, Invertors and so on.
[006] Electro-magnetic relays are most common and prominent among all relays. The electro- magnetic relays are constructed with electrical, mechanical and magnetic components, and have operating coil and mechanical contacts. The electro-magnetic relays permit flow of electricity from common to normally closed (NC) when not energized the coil and switch that to normally open (NO) when energized. It happens when the coil become a magnet and attracts the steel-plate / armature towards its pole. By the time the two sided common contact arm getting power from common pole through the leading wires, it breaks from NC and touches the NO. When the coil become magnet, it overcome the pulling power of a spring provided therein applying from opposite side of the hinge point which in fact keeps the common contact always in contact with NC. [007] Normally, one cannot view the mechanisms in a relay in a device such as geysers. Even if the relay is naked, it always mount deep inside the products' case and not being operated by the user directly other than the power supply to the coil with additional switches available on the product case. Very few relays are available in market having adaptation with a built in button / latch to make 'NO' active without energising the coil. Those relays are very small ones
and that feature is only for testing the circuits (mainly DC). It is because of following reasons. When establishing and breaking over-powered circuits, sparks will be generated and there is high possibility to get those contacts stick to each other's in such circuit establishments. So, to reduce such sparks, the contact establishment should be with high speed. Magnetized coil operation shall be with adequate speed, but if we allow closing that circuit manually with our fingers, that cannot be fast enough as minimum requirement to that relay. Low voltage starting trigger may not have that fast action. The breaking on such condition also shall be very week because the pulling power of reverse pulling spring also should be week for permitting automatic sticking with magnetic coil. The main demerit is that one cannot do force-break of the poles if their contacts get stuck/burned each other. To avoid this issue, relay manufacturers always provide more capacity and quality contacts than the relay really required. One can provide silver made or coated button even for low powered relay which is generally not utilized.
[008] Therefore, there is a need for a relay switch device which can be operated manually to break magnetic sticking of the dipole contacts to increase safety, avoiding pilferages, wasting money etc.
SUMMARY OF THE INVENTION [009] The following summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, example embodiments, and features described above, further aspects, example embodiments, and features will become apparent by reference to the drawings and the following detailed description. [0010] One or more of the problems/limitations of the conventional prior art may be overcome by various embodiments of the present invention.
[0011] It is the primary object of the present invention to provide a relay switch device operated manually to break magnetic sticking of the dipole contacts in a circuit.
[0012] It is one object of the present invention to provide a relay switch in a circuit. The relay switch comprises dipole contacts spaced with a gap to have electrical contact. The relay switch comprises a push plate coupled to a manual relay switch. The push plate enables magnetic sticking of the force dipole contacts. The manual relay switch is operated to actuate the push
plate to break magnetic sticking of the dipole contacts in order to increase gap between the dipole contacts.
[0013] To further clarify advantages and features of the present disclosure, a more particular description of the disclosure will be rendered by reference to specific embodiments thereof, which is illustrated in the appended figures. It is to be appreciated that these figures depict only typical embodiments of the disclosure and are therefore not to be considered limiting of its scope. The disclosure will be described and explained with additional specificity and detail with the accompanying figures.
BRIEF DESCRIPTION OF THE FIGURES
[0014] These and other features, aspects, and advantages of the example embodiments will become better understood when the following detailed description is read with reference to the accompanying drawings in which like characters represent like parts throughout the drawings.
[0015] FIG. land 2 illustrate a schematic diagram of a relay system, in accordance with one embodiment of the present disclosure; [0016] FIG. 3 A illustrates a circuitry diagram of the relay switch with minimal control circuits, in accordance with one embodiment of the present disclosure;
[0017] FIG. 3B illustrates an analogue logic circuit implementing the relay switch, in accordance with one embodiment of the present disclosure;
[0018] FIG. 4 illustrates a working mechanism of the threshold mechanism, in accordance with one embodiment of the present disclosure;
[0019] FIG. 5 illustrates a perspective view of a standard boxed relay, in accordance with one embodiment of the present disclosure;
[0020] FIG. 6 illustrates a perspective view of a relay box having modification to work in accordance with one embodiment of the present disclosure; [0021] FIG. 7 and 8 illustrate threshold switching mechanism, in accordance with one embodiment of the present disclosure;
[0022] FIG. 9 illustrates a perspective view of a relay switch operated using two switches, in accordance with one embodiment of the present disclosure; [0023] FIG. 10 illustrates a perspective view of a relay switch operated using single toggle switch, in accordance with one embodiment of the present disclosure;
[0024] FIG. 11 to 14 illustrate mechanism of auto-OFF of the locked manual-ON, in accordance with one embodiment of the present disclosure;
[0025] FIG. 15 illustrates a mechanism for automatic and manual adaptation to the relay switch, in accordance with one embodiment of the present disclosure; and
[0026] FIG. 16, 16A and 16B illustrate a single relay switch having push-ON, Pull-OFF mechanism, in accordance with one embodiment of the present disclosure.
[0027] Further, skilled artisans will appreciate that elements in the figures are illustrated for simplicity and may not have necessarily been drawn to scale. Furthermore, in terms of the construction of the device, one or more components of the device may have been represented in the figures by conventional symbols, and the figures may show only those specific details that are pertinent to understanding the embodiments of the present invention so as not to obscure the figures with details that will be readily apparent to those of ordinary skill in the art having the benefit of the description herein. DETAILED DESCRIPTION
[0028] For the purpose of promoting an understanding of the principles of the invention, reference will now be made to the embodiments illustrated in the figures and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is thereby intended, such alterations and further modifications in the illustrated system, and such further applications of the principles of the invention as illustrated therein being contemplated as would normally occur to one skilled in the art to which the invention relates.
[0029] It will be understood by those skilled in the art that the foregoing general description and the following detailed description are exemplary and explanatory of the invention and are not intended to be restrictive thereof. [0030] The present disclosure discloses a relay switch operated to start and stop manually, and at the same time performs breaking of a circuit automatically to prevent undesirable conditions. The relay switch comprises dipole contacts spaced with a gap to have electrical contact. The relay switch comprises a push plate coupled to a manual relay switch. The push plate enables magnetic sticking of the force dipole contacts. The manual relay switch is operated to actuate the push plate to break magnetic sticking of the dipole contacts in order to increase gap between the dipole contacts.
[0031] Various embodiments of the apparatus are explained using the FIGS. 1 tol6B. [0032] Referring to FIG. 1, a perspective of a relay system 10 is shown, in accordance with one embodiment of the present disclosure. Further, referring to FIG. 2, a schematic diagram of the relay system 10 (inner portion shown in FIG. 1) is shown. As explained above, electromagnetic relays are constructed with electrical, mechanical and magnetic components, and have operating coil and mechanical contacts. At first, a connector 13 is to provide power to the relay coil. The electro-magnetic relays permit flow of electricity from common 14 to normally closed (NC / 14C) when not energized the coil and switch that to normally open (NO / 140) when energized. The common connector 14 is in connection with a wire 141 to the back side of the contact arm 15. It happen by the coil 11 become a magnet and attracts the steel -plate / armature 12 towards its pole. By the time the two sided common contact arm 15 getting power from common pole 14 through the leading wire 141, breaks form NC 14C and touch the NO 140. When the coil become magnet, it overcome the pulling power of the spring 109 applying from opposite side of the hinge point 105, which in fact keep the common contact 14 always in contact with NC 14C. [0033] In accordance with the present disclosure, a threshold is provided on starting to overcome issues discussed above. As represented in FIG. 2, a gap 17 between a relay coil tip 112 and the armature 12 is very small. The gap provided is small to ensure the armature 12 is in its magnetic catch area. At the same time, the gap 18 between the common contact 15 and normally open contact 140 is still smaller to ensure these contacts touch first and having strong push each other by the time the gap 17 get nil. The gap 18 is not enough for making a good
threshold for manual switching. In other words, the gap 18 in between NO (140) and common 15 is lesser than the magnetic capacity of relay coil 11. Threshold embodiment 99 is illustrated at the space 18. If the threshold embodiment 99 is single, it will come at center, in between the dipole contacts. It can be two separate ones directly acting to the common contacts 15. In other words, the threshold lever is made between the common contact 15 and normally open contact 140.
[0034] The provision of threshold can be by any means from any side which is including from back side of the push plate 16B. The new level er embodiment 63 is for easy pushing down (force 61) the armature 12 to the magnetic pole 112 from the membrane 77 surface. In other words, the block 63 enables switching without much stretch of / displacement of the membrane 77. Minimal actions on the membrane will provide more life to it than harder ones. This new membrane embodiment 77 also enables sealing of the relay case 10 at the push plates / contacts' side 104. This air sealing is for making the relay a best switch even to use at fire hazardous area.
[0035] The new elongated back-part 16B of the push plate 16, beyond the hinge 105, enables force breaking from magnetic sticking. That is, by making a push force 62, the push plate 16 allows to create a pullback force at front side 16A of push plate which can break the magnetic sticking any time. That is the force 62 acts as manual off to the relay. The magnetic force acts as the threshold in this offing work. The block 64 (it can be an upward bend of the 16B too) enables to apply the force from the same membrane level.
[0036] Now referring to FIG. 3A, a circuitry diagram of the relay with its basic minimum circuits contain a DC unit and a logic circuit. It is known that relays work only according to the power providing to its coil either by the user with a small switch or by some electronic logic circuit. All such devices get that continues power from another source / switch. Without that, continues coil power one cannot get continues power output through the 'NO' of that main relay. In accordance with present disclosure, the DC unit gets input power only from the NC contact of the main relay. In order to start that circuit, one need to apply manual force 61, to push the push-plate 16 to establish the common- NO contact. Output of the DC unit directly go to a Logic Circuit (LC) before it reach to main relay coil and any block happen inside the logic part will prevent the output to relay coil and thus happen to completely off that device. That is, these products also need a DC unit (SMPS) and a logic unit as in any of such automatic
products to work automatically. However, this relay switch can work totally as manual (without powering the relay coil) which cannot be done in existing relays. The backward elongated part 16B and the application force 62 is achieved using the relay switch. [0037] In one embodiment, a dual pole switch 61A & 61B is made to work first, before the manual-ON action 61 as presented earlier. In use, the pole switch 61 A will bypass the AC power to DC unit (SMPS) and provide DC power to the logic circuit. This is made available to get all the status readings without activating the main relay and thus on the actual device / motor. Thus it will show all the displays and warnings till the time of release that pressing. The back-up unit (B) also passes DC power to logic circuit through the parallel switch poles 61B. It should be understood that the dual pole switch 61 A & 61B can be used to provide status even in power failure times. Power from the cell will utilized only during such power failure times. The diodes Dl and D2 on the positive lines will prevent the undesired power flows between DC unit and back-up units. Thus, the dual pole switching 61 A & 6 IB which act before the manual force- On' action 61, can provide status outputs (from sensors) from the same start switch that is, even during power failure times.
[0038] Now, referring to FIG. 3B, a logic circuit implementing the relay switch is shown. As can be seen, two PCB relays are provided in the circuit before the output goes to main relay coil. First, PCB relay check 'YES' condition and the second one 'NO'. That is the first relay's NO get power only if the Y transistor gets a pulse. If so, it's NO pole will provide power to the second relay's common point which works according to the pulse-N. The main relay get power from its NC side and by the second relays activation will break the output to main relay. That is it check a condition of there is no pulse on 'N transistor. These two sensors are standardized for almost all the need of a special switch required for automated works. The Yes and No condition checking parts can be multiplied either as parallel or as serial according to the specifications we need and by taking pulse form appropriate sensors. NCI and NO2 are not using for the final relay's working, but those can be used for making faulty warnings either as sound or as display. All the outputs of the sensors also can be used for display for better understanding of the working conditions. It should be understood that the logic explained above can also be implemented using a digital or microprocessor method and such implementation is obvious to a person skilled in the art.
[0039] FIG. 4is provided to explain a working mechanism of the threshold mechanism 99. The upper arm 98 having a built in hinge 94 with its bend plate 95. Backside of that upper arm 98 is coupled to the relay's connector side 101 such that the relay's connector side 101 does not have any movement on action. The tip 97B of the bottom arm 97 is fixed to the hinge rod 94 to slant upward very easily because its backside can be get distended from upper arm 98, leaving a space 96 in between. When the push plate 16 goes upward with the effect of spring 109, the hitting tip 93 will not make any sort of obstruction with the tip 97B. But when apply push force 61 to on the unit, the push plate 16 will go downward and the hitting tip 93 will get a resistance from its counterpart 97B. As a result, the bottom plate 97 starts bending downward (FIG. 4C) and out of over forcing 61 will a sudden release. That is, a threshold is obtained on every ON action. Further, it will enable fast contact establishment between common 14 and normally open 140. Fast hitting of contact will nullify the chances for generating spark between contact tips and getting it burned. Since the circuit is turned 'ON' manually; not by making magnet by powering its coil; only a small coil required to hold the armature on the magnet tip 112.
[0040] FIG. 5 shows a perspective view of a standard boxed relay. The connector side 101 where all the external wires should connect is at top side. The bottom side is 102 where the spring part of the relay comes normally in present relay models. One of the long four sides is side- 104 where the push-plate 16 comes and its opposite side is 101 where relay coil comes.
[0041] FIG. 6 shows a perspective view of a relay box 30, in accordance with one embedment of the present disclosure. The relay box 30 comprises a projection 31 at push plate 16 (side 104) by having a groove 32 inside. There are two push buttons 3N and 3F for manual ON and OFF respectively through two holes on it. The spring 38 on the button leg which keep the push button away from push plate 16 but it will not go off because of the rivet 39. There is a threshold pin 35 at bottom side 101 which is spring loaded to remain upper-part of its groove. When the button 3N come and hit on it from its slanting side, the threshold pin 35 will make a resistance with its cutting 34 against the cutting 37 on the button leg 3N. But after a certain force limit, the threshold pin 35 will suddenly go downward and permit the bush button 3N to hit on push plate 16 with speed. There will be limitation to this hitting / movement out of the correct measurements of switching parts. That is, we are getting a correct threshold switching on every manual push-on attempt (force-61). The inner tip of off-button 3F can be round itself where
we get the threshold form magnet force as detailed above. On each push-On attempt push plate 16 get sticking with the coil tip 112 if the conditions are OK, but the push button 3N will come back to its original position. If the conditions are not OK, coil will not get continues power and so, the push plate also will come along with the releasing of push on button 3N. Referring to FIG. 7 and 8, the push button 3N and the threshold pin 35 and its fixing inside the groove 32 is illustrated, in accordance with one embodiment of the preset disclosure.
[0042] FIG. 9 shows a perspective view of a product concealing this new relay embodiment and how it is operated using two switches. The push button 4N directly triggers 3N and the push button 4F directly triggers 3F. Livers or cables may be used to trigger the push plate to start and stop the relay switch manually.
[0043] FIG. 10 shows a perspective view of a product concealing this new relay embodiment and how it operated using one switch. The switch may include a toggle switch 55. The toggle switch 55 is balanced on both sides using a center pivot point 5P. As such. Pressing down will start the relay switch and pressing up will OFF the relay switch. The leg 57 press the relay switch 33N to activate NO of the relay and the leg 56 press the relay switch 33F for breaking the contact to NO. [0044] FIGS. 11 to 14 show the mechanism of auto-OFF of the locked manual-ON. FIG. 11 shows the switches' OFF condition or relay's normal working condition. Both the switches 6N and 6F are maximum out from the product case 100 with the spring thrust. Further, stoppers 66 and 67 may be provided for the switches 6N and 6F, respectively to block the spring thrust. Further, a movable plate 300 is provided in between product case and threshold relay which is having oval holes to pass the switches 6N and 6F.
[0045] When the user pushes start switch 6N to trigger the relay, the stopper 66 will push the moving plate 300 down against the spring thrust. But it normally triggers the relay / activates NO before the stopper 66 cross the moving plate 300, as shown in FIG. 12. As can be seen, the plate is moved downward and the oval hole 302 appeared down instead of 301 at top side to switch 3N. At the same time lock 66 not stuck with that bottom hole. In other words, gentle push will trigger the relay with the tip 33N, but the switch will not get locked with the manual stopper lock mechanism 66. If all the conditions are satisfied, then the relay will keep on in sticking / active state. Otherwise, the relay will get stopped immediately along with the release of finger from the switch 6N.
[0046] In certain conditions, one may need to keep on the 'ON' condition for long time. For example, if the sensors have some malfunction and automatic sticking is not happening, we anyway have to pump water manually. Presently all available automatic devices either have a built in heavy switch to bypass power to motor manually or, if those products only have a small switch that control power to the relay coil, manufactures always advise to fix an additional parallel manual switch along with their automatic one. But this new relay or the product do not have such issue. User can lock the ON button 6N by pressing it little more harder. By the time the locking / stopper fitment 66 will pass the moving plate 300 and that spring thrust plate will go up and lock the ON button 6N from going back. That is the device will remain in manual ON state, as shown in FIG. 13. The cavity 301 of the oval hole over to the switch 6F shows the plate is moved to top. This locking can be freed by pushing down the moving plate 300 by pushing the off button 6F. Then, the locking fitment 67, which is slightly larger than the locking part 66, will push the moving plate down and auto releases the ON switch 6N, as shown in FIG. 14. We can see the oval gap 302 bottom to switch 6N as evidence. Switch 6F not only release the ON-button to get the output broken, but also it will apply a plucking action 62 on the on the push plate 16B. Since there is guarantee of this force breaking, there is no need of another parallel switch to execute manual operation on requirement. Instead of keeping the moving plate 300 up with a spring thrust, it can keep down with gravity force. Then the locking part 66 and 67 should be at the top side of that switches 6N and 6F.
[0047] FIG. 15 shows a mechanism for automatic and manual adaptation to the relay switch. In the current example, the threshold and more gap 17 is needed between armature and coil. But to perform auto sticking with energized magnetic coil, the distance 17 should be less and there shouldn't have any threshold. To have both these feature on the same relay, it should have a distance adjustment mechanism as in the chamber 85B. There the moving slating / jammer plate 87 which can be moved front and back with a screw through the hold 81 which lies between slanting cuts of push plate 16B and counterpart 80, enable this work. The back side of the push plate 16B) beyond the hinge point 105 will be high closer to the block 80 because it will be in pulling condition with a spring over there. When jammer is in position 88, the distance 17 shall be high. Only the normally closed NC contact 24C prevents the common contact 15C from further widening. That condition will be good for manual operation. Pushing the jammer plate to position 87, forces the push plate 16B to keep apart from counterpart 80 and that will reduce the gap 17 as well as gap 18 at opposite side. By that time, the threshold
mechanism also supposed to be freed from further action. Such a way, the push plate 16 is kept in a magnetic catch area and thus the same relay can make ready for automatic working too.
[0048] In order provide external threshold mechanisms, the jammer mechanism may not be required. Likewise, relays can be made with push plate having push from front side. That is at 16A side and not as back side pull at 16B side. If so, both forces 61 and 62 should act at front side itself. One should be pushing and other should be pulling with the same or different embodiments. [0049] FIGs 16, 16A and 16B show a single relay switch having push-ON, Pull-OFF mechanism. The single relay switch is used for manual-ON only and offing always supposed to be down automatically. As a result, there is no need of a separate off switch. However, for the need of force breaking when required, we need to keep that OFF provision. That feature can be incorporated to the same ON-switch as provisions of pulling form the normal position. The tip 70 of the switch 7N and the D-rings 73 of switch heads 71 and 72 enable the user a provision to pull the switch when required. Then, the tip 33N of the push-On switch which hits the relay push plate 16A, will have a provision to pull back the same when the switch pull further from its normal resting point enable a force for plucking / force breaking. The prolonged thread 74 and a bush 75 at its tip (use to fix on the push plate) are one of the embodiments possible for such pulling back.
[0050] While specific language has been used to describe the disclosure, any limitations arising on account of the same are not intended. As would be apparent to a person skilled in the art, various working modifications may be made to the method in order to implement the inventive concept as taught herein.
[0051] The relay switch described above can be used for ON & OFF an electrical device manually as per the desire of the user and at the same time, provide automatic breaking of the circuit for the needs of safety, avoiding pilferages, wasting money etc. The relay switch undertakes safety on over-ampere as well as over/under voltage conditions, as in conventional electronic starter switches at the same time the relay switch can also provide desired actions on different sensor outputs, by checking pulses of contacts / touches, temperature, pressure, light, smoke, time, sound, movements etc.
[0052] The figures and the foregoing description give examples of embodiments. Those skilled in the art will appreciate that one or more of the described elements may well be combined into a single functional element. Alternatively, certain elements may be split into multiple functional elements. Elements from one embodiment may be added to another embodiment. For example, orders of processes described herein may be changed and are not limited to the manner described herein. Moreover, the actions of any flow diagram need not be implemented in the order shown; nor do all of the acts necessarily need to be performed. Also, those acts that are not dependent on other acts may be performed in parallel with the other acts. The scope of embodiments is by no means limited by these specific examples. Numerous variations, whether explicitly given in the specification or not, such as differences in structure, dimension, and use of material, are possible.
Claims
1. A relay switch, comprising:
NC and NO contacts, spaced with a gap 18 to have a normally closed (24C) and a normally open (240) electrical contact with a movable common (C /15); and
a push plate (16) coupled to the movable common pivot on the hinge point (105), wherein the push plate (16) enables electro-magnetic sticking with an energized coil (11) for a forced contact to NO and wherein the demagnetization result in breaking from the NO contact and establish contact with the NC.
2. The relay switch as claimed in claim 1, wherein the relay consists of a manual provision to ON and OFF the contact to normally open (NO) line, wherein the manual provision is engaged to trigger a threshold on all its 'NO' contact activations, and wherein the threshold is zero on its reverse move / breaking.
3. The relay switch as claimed in claim 2, wherein the relay consists of a provisions to execute manual force 61 for activating 'NO'-contact and force 62 for force-breaking from 'NO'-contact.
4. The relay switch as claimed in claim 3, wherein the push plate (16) comprises a long tail (16B) beyond the hinge for providing leverage to reduce the contact breaking force.
5. The relay switch as claimed in claim 2, wherein the gap (18) between NC and NO than usual is increased for enabling better result in its new actions.
6. The relay switch as claimed in claim 5, wherein the relay consist a movable plate 88 to reduce the gap 18 for making the relay adaptive for auto-sticking by the magnetizing the relay coil.
7. The relay switch as claimed in claim 6, comprises at least one switch to operate the relay switch.
8. The relay switch as claimed in claim 7, wherein the switches include by-level switches; wherein a first level establishes two separate line contacts (61A & 61B) and a second level
activates the relay directly for the compactness and easiness of electrical power switching operation.
9. The relay switch as claimed in claim 7, wherein the hinge 105 comprises a push-on and pull- off (push-off) switch acting on an area 16A, wherein the relay switch comprises a back pulling spring 109 at side 102 that is brought to contact side 101.
10. The relay switch as claimed in claim 9, wherein the relay consists of a membrane at side 104 for air sealing and to enable manual operation.
11. The relay switch as claimed in claim 10, wherein the relay consists of a moving plate 300 having first hole and a second hole for passing of switch 6F and 6N, wherein the moving plate 300 allows switch 6N to pass through the first hole for locked manual-'ON' and the switch 6F to pass through the second hole for auto release 'OFF' .
Applications Claiming Priority (2)
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IN201741002104 | 2017-04-19 | ||
IN201741002104 | 2017-04-19 |
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WO2018193474A1 true WO2018193474A1 (en) | 2018-10-25 |
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PCT/IN2018/050234 WO2018193474A1 (en) | 2017-04-19 | 2018-04-19 | Manual relay switch |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109515852A (en) * | 2018-12-29 | 2019-03-26 | 四川中烟工业有限责任公司 | A kind of transparent membrane packaging machine preventing clogging up device |
CN110252606A (en) * | 2019-07-31 | 2019-09-20 | 东莞市汇驰纸业有限公司 | A kind of cardboard patch magnetic dot plastic structure |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102568952B (en) * | 2010-12-31 | 2015-09-16 | 北京Abb低压电器有限公司 | According to intelligent operation apparatus and the miniature circuit breaker thereof of the automatic on/off switch of front voltage |
-
2018
- 2018-04-19 WO PCT/IN2018/050234 patent/WO2018193474A1/en active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102568952B (en) * | 2010-12-31 | 2015-09-16 | 北京Abb低压电器有限公司 | According to intelligent operation apparatus and the miniature circuit breaker thereof of the automatic on/off switch of front voltage |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109515852A (en) * | 2018-12-29 | 2019-03-26 | 四川中烟工业有限责任公司 | A kind of transparent membrane packaging machine preventing clogging up device |
CN109515852B (en) * | 2018-12-29 | 2024-03-12 | 四川中烟工业有限责任公司 | Anti-blocking device of transparent film packaging machine |
CN110252606A (en) * | 2019-07-31 | 2019-09-20 | 东莞市汇驰纸业有限公司 | A kind of cardboard patch magnetic dot plastic structure |
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