Claims:1. A tripping assembly(100) for an electromagnetic relay, the assembly (100) comprising:
a coil (108) having predefined number of turns, the coil (108) adapted to be electrically coupled to an electrical supply;
a fixed electromagnet (104) configured inside the coil (108);
a movable electromagnet (106) configured inside the coil (108), the movable electromagnet (106) is positioned at a predefined distance from the fixed electromagnet (104) such that an air gap of the predefined distance is between the fixed electromagnet (104) and the movable electromagnet (106), wherein energization of the coil (108) by the electrical supply creates an electromagnetic field that generates an electromagnetic force which moves the movable electromagnet (106) from a first position to a second position inside the coil (108), wherein the first position corresponds to a position where the air gap of predefined distance is between the fixed electromagnet (104) and the movable electromagnet (106), the second position corresponds to a position where the movable electromagnet (106) is in contact with the fixed electromagnet (104); and
a conical spring (202) of predefined dimension configured between the fixed electromagnet (104) and the movable electromagnet (106), and configured to generate a spring force opposite to the electromagnetic force generated by the coil(108).
2. The tripping assembly (100) as claimed in claim 1, wherein when the electromagnetic force generated by the coil (108) exceed a predefined value greater than the spring force of the conical spring (202), the movable electromagnet (106) moves from the first position to second position
3. The tripping assembly (100) as claimed in claim 1, wherein when the movable electromagnet (106) is at the second position and the coil (108) is deenergized upon removal of electrical supply, the conical spring (202) facilitates movement of the movable electromagnet (106) from the second position to the first position.
4. The tripping assembly as claimed in claim 1, wherein a vertex of the conical spring (202) is in contact with the fixed electromagnet (104), and a planar surface of the conical spring (202) is incontact with the movable electromagnet (106).
5. The tripping assembly (100) as claimed in claim 1, wherein a vertex of the conical spring (202) is in contact with the movable electromagnet (106), and a planar surface of the conical spring (202) is in contact with the fixed electromagnet (104).
6. The tripping assembly (100) as claimed in claim 1, wherein the predefined distance between the fixed electromagnet (104) and the movable electromagnet (106) is equivalent to length of the conical spring (202).
7. The tripping assembly (100) as claimed in claim 1, wherein movement of the movable electromagnet (106) towards the fixed electromagnet (104) facilitates in generating an impact force in the electromagnetic relay.
8. The tripping assembly (100) as claimed in claim 1, wherein the tripping assembly (100) is configured to perform tripping action in presence of residual flux.
9. An electromagnetic relay, the relay comprising:
a tripping mechanism including:
a coil (108) having predefined number of turns, the coil (108) adapted to be electrically coupled an electrical supply;
a fixed electromagnet (104) configured inside the coil (108);
a movable electromagnet (106) configured inside the coil (108), the movable electromagnet (106) is positioned at a predefined distance from the fixed electromagnet (104) such that an air gap of the predefined distance is between the fixed electromagnet (104) and the movable electromagnet (106) , wherein energization of the coil (108) by the electrical supply creates an electromagnetic field that generates an electromagnetic force which moves the movable electromagnet (106) from a first position to a second position inside the coil (108), wherein the first position corresponds to a position where the air gap of predefined distance is between the fixed electromagnet (104) and the movable electromagnet (106), the second position corresponds to a position where the movable electromagnet (106) is in contact with the fixed electromagnet (104); and
a conical spring (202) of predefined dimension configured between the fixed electromagnet (104) and the movable electromagnet (106), and configured to generate aspring force opposite to the electromagnetic force generated by the coil (108).
10. The relay as claimed in claim 8, wherein when the electromagnetic force generated by the coil (108) exceed a predefined value greater than the spring force of the conical spring (202), the movable electromagnet (106) moves from the first position to second position, and wherein when the movable electromagnet (106) is at the second position and the coil (108) is deenergized upon removal of electrical supply, the conical spring (202) facilitates movement of the movable electromagnet (106) from the second position to the first position.
, Description:TECHNICAL FIELD
[0001] The present disclosure relates generally to field of contactors and protection relays. More particularly, the present disclosure provides a tripping assembly for an electromagnetic relay.

BACKGROUND
[0002] Background description includes information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.
[0003] Tripping mechanism is essential in electrical circuits to prevent from damage in case fuse fails to operate on time. Tripping mechanism facilitates in protecting the circuits and similar system from overload and other fault conditions. Similarly, tripping mechanism isemployed in electromagnetic relay, electromagnetic solenoid, and the likes. The electromagnetic solenoid includes afixed electromagnet and a movable electromagnet placed inside main coil apart by helical compression spring between them. Whencurrent flows through main coil, magnetic field produces in the fixed electromagnet and the movable electromagnet. As a result, the movable electromagnet attract towards the fixed electromagnet due to electromagnetic force of coil. When generated electromagnetic force between the movable electromagnet and thefixed electromagnet become greater than spring force, the movable electromagnet is attracted towards the fixed electromagnet. Movement of the movable electromagnet is responsible for generating impact force.When there is no current in the coil, the movable electromagnet returns back to its initial position due to return spring force. In current technology, cylindrical compression spring is used in between thefixed electromagnet and the movable electromagnet of solenoid. Use of spring is to send back the movable electromagnet on its initial position. Assembly of spring is either inner side of the fixed electromagnet or the movable electromagnet or outer side of one of them.
[0004] Prior art reference document number WO 03/049129 with title – Contactor and WO 90/05374 with title- Improvement in electromagnetic device, and US5343179 with tile – Miniaturized solenoid operated trip device discloses about solenoid to trip the circuit breaker. However, the cited references do not disclose positioning of spring inside the solenoid and that the return spring is present between the fixed electromagnet and themovable electromagnet. Also, the cited references donot disclose about tripping mechanism in case of residual magnetism.
[0005] FIG. 1A and FIG. 1B, various types of tripping mechanism are disclosed. As illustrated, when coils 108 of solenoid gets energized by the electrical supply, an electromagnetic field is created that generates an electromagnetic force to move a movable electromagnet 106 from a first position (away from the fixed electromagnet 104) to a second position (in contact with the fixed electromagnet 104) inside the coil 108. Further, cylindrical compression spring 102 used in existing technology in between the fixed electromagnet 104 and the movable electromagnet 106, results in reduced surface area for the fixed electromagnet 104or the movable electromagnet 106or both.The residual flux is generated inside the fixed electromagnet 104 and the movable electromagnet 106, due to which the movable electromagnet 106 does not come back to initial position or the first position.
[0006] There is a need to overcome problems mentioned in prior art by bringing a solution where spring is placed in between the fixed electromagnet and the movable electromagnet and shape and material of the springfacilitates inproviding increased surface area for the fixed electromagnet and the movable electromagnet. Also, the movable electromagnet can efficiently return to the initial position along with improved electromagnetic force. The solution aids in improving permeability of the fixed electromagnet and the movable electromagnet. The solution facilitates in tripping mechanism along with presence of residual flux or residual magnetism.

OBJECTS OF THE PRESENT DISCLOSURE
[0007] Some of the objects of the present disclosure, which at least one embodiment herein satisfies are as listed herein below.
[0008] It is an object of the present disclosure to providea tripping assembly or mechanism that facilitates in improving permeability of electromagnets with help of conical spring.
[0009] It is an object of the present disclosure to provide a tripping assembly or mechanism that provides large surface area for electromagnet and the conical spring.
[0010] It is an object of the present disclosure to provide a tripping assembly or mechanism that aids in avoiding residual flux generation and facilitates movable electromagnet to come back to initial position efficiently.
[0011] It is an object of the present disclosure to provide a tripping assembly or mechanismthat enables generation of improvedelectromagnetic force between fixed electromagnet and movable electromagnet.
[0012] It is an object of the present disclosure to provide a tripping assembly or mechanism that efficiently brings the movable electromagnet to its initial position after removal of electrical power.
[0013] It is an object of the present disclosure to provide a tripping assembly or mechanism that does not get affected by generationof residual flux.
[0014] It is an object of the present disclosure to provide a tripping assembly or mechanism where residual flux or magnetism remains in the circuit.

SUMMARY
[0015] The present disclosure relates generally to field of contactors and protection relays. More particularly, the present disclosure provides a tripping assembly for an electromagnetic relay.
[0016] An aspect of the present disclosure pertains to a tripping assembly for an electromagnetic relay, the assembly may include a coil having predefined number of turns, the coil adapted to be electrically coupled an electrical supply. The tripping assembly may include a fixed electromagnet configured inside the coil, a movable electromagnet configured inside the coil, where the movable electromagnet may be positioned at a predefined distance from the fixed magnet such that an air gap of the predefined distance may bebetween the fixed electromagnet and the movable electromagnet. Energization of the coil by the electrical supply may create an electromagnetic field that generates an electromagnetic force which moves the movable electromagnet from a first position to a second position inside the coil. The first position may corresponds to a position where the air gap of predefined distance may bebetween the fixed electromagnet and the movable electromagnet, the second position corresponds to a position where the movable electromagnet may bein contact with the fixed electromagnet. The assembly may include a conical spring of predefined dimension configured between the fixed electromagnet and the movable electromagnet, and configured to generate a spring force opposite to the electromagnetic force generated by the coil.
[0017] In an aspect, when the electromagnetic force generated by the coil exceed a predefined value greater than the spring force of the conical spring, the movable electromagnet may move from the first position to second position
[0018] In an aspect, when the movable electromagnet is at the second position and the coil is deenergized upon removal of electrical supply, the conical spring may facilitate movement of the movable electromagnet from the second position to the first position.
[0019] In an aspect, a vertex of the conical spring may be in contact with the fixed electromagnet, and a planar surface of the conical spring may be incontact with the movable electromagnet.
[0020] In an aspect, the vertex of the conical spring may be in contact with the movable electromagnet, and a planar surface of the conical spring may bein contact with the fixed electromagnet.
[0021] In an aspect, the predefined distance between the fixed electromagnet and the movable electromagnet may be equivalent to length of the conical spring.
[0022] In an aspect, movement of the movable electromagnet towards the fixed electromagnet may facilitate in generating an impact force in the electromagnetic relay.
[0023] In an aspect,the tripping assembly may be configured to perform tripping mechanism in presence of residual flux.
[0024] Another aspect of the present disclosure pertains to an electromagnetic relay, the relay may include a tripping mechanism. The tripping mechanism may include a coil having predefined number of turns, the coil adapted to be electrically coupled an electrical supply, a fixed electromagnet configured inside the coil, and a movable electromagnet configured inside the coil, the movable electromagnet may be positioned at a predefined distance from the fixed magnet such that an air gap of the predefined distance may be in between the fixed electromagnet and the movable electromagnet. Energization of the coil by the electrical supply may create an electromagnetic field that generates an electromagnetic force which moves the movable electromagnet from a first position to a second position inside the coil. The first position may correspond to a position where the air gap of predefined distance may be in between the fixed electromagnet and the movable electromagnet. The second position may correspond to a position where the movable electromagnet is in contact with the fixed contact. The tripping mechanism may include a conical spring of predefined dimension configured between the fixed electromagnet and the movable electromagnet, and configured to generate aspring force opposite to the electromagnetic force generated by the coil.
[0025] In an aspect, when the electromagnetic force generated by the coils exceed a predefined value greater than the spring force of the conical spring, the movable electromagnet may move from the first position to second position, and when the movable electromagnet is at the second position and the coil is deenergized upon removal of electrical supply, the conical spring may facilitate movement of the movable electromagnet from the second position to the first position.

BRIEF DESCRIPTION OF THE DRAWINGS
[0026] The accompanying drawings are included to provide a further understanding of the present disclosure, and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.
[0027] The diagrams are for illustration only, which thus is not a limitation of the present disclosure, and wherein:
[0028] FIG. 1A and FIG. 1B illustrate exemplary view of prior arts of tripping assembly for an electromagnetic relay.
[0029] FIG. 2A and FIG. 2B illustrate exemplary views of proposed tripping assembly for an electromagnetic relay, in accordance with an embodiment of the present disclosure.

DETAIL DESCRIPTION
[0030] In the following description, numerous specific details are set forth in order to provide a thorough understanding of embodiments of the present invention. It will be apparent to one skilled in the art that embodiments of the present invention may be practiced without some of these specific details.
[0031] The present disclosure relates generally to field of contactors and protection relays. More particularly, the present disclosure provides a tripping assembly for an electromagnetic relay.
[0032] FIG. 2A and FIG. 2B illustrate exemplary views of proposed tripping assembly for an electromagnetic relay, in accordance with an embodiment of the present disclosure.
[0033] As illustrated in FIG. 2A and FIG. 2B, the proposed tripping assembly 100 (also referred to as assembly 100, herein) for an electromagnetic relay can include a coil 108 having predefined number of turns. The coil 108 can be adapted to be electrically coupled to an electrical supply. The assembly 100 can include a fixed electromagnet 104 configured inside the coil 108 and a movable electromagnet 106 configured inside the coil 108. The movable electromagnet 106 can be positioned at a predefined distance from the fixed electromagnet 104 such that an air gap of the predefined distance is between the fixed electromagnet 104 and the movable electromagnet 106. In an illustrative embodiment, energization of the coil 108 by the electrical supply can create an electromagnetic field that can generate an electromagnetic force which moves the movable electromagnet106 from a first position to a second position inside the coil 108. In another illustrative embodiment, the first position can correspond to a position where the air gap of predefined distance is between the fixed electromagnet 104 and the movable electromagnet 106 and the second position can correspond to a position where the movable electromagnet 106 is in contact with the fixed electromagnet 104.
[0034] In an embodiment, the assembly 100 can include a conical spring 202 of predefined dimension configured between the fixed electromagnet 104 and the movable electromagnet 106, and configured to generate a spring force opposite to the electromagnetic force generated by the coil 108.
[0035] In an illustrative embodiment, the assembly 100 can be used in electromagnetic solenoid, where impact force can be generated by the electromagnetic solenoid. The solenoid can include the fixed electromagnet 104 and the movable electromagnet 106 placed inside the coil 108, and the conical compression spring 202 being positioned between the fixed electromagnet 104 and the movable electromagnet 106. In another illustrative embodiment, when the electrical supply is configured to generate current and the current flows through the coil 108, magnetic field can be produced in the fixed electromagnet 104 and the movable electromagnet 106. The movable electromagnet 106 can attract towards the fixed electromagnet 104 due to electromagnetic force of the coil 108. When generated electromagnetic force between the movable electromagnet 106 and the fixed electromagnet 104 become greater than spring force, the movable electromagnet 106 can be attracted towards the fixed electromagnet 104.
[0036] In an illustrative embodiment, the fixed electromagnet 104 and the movable electromagnet 106 does not touch each other due to presence of conical spring 202 which remains in between the fixed electromagnet 104 and the movable electromagnet 106. In another illustrative embodiment, movement of the movable electromagnet 106 can facilitate in generating impact force. In yet another illustrative embodiment, when the current from the electrical supply passing through the coil 108 is stopped, the movable electromagnet 106 can be configured to come back to initial position due to return spring force, where the initial position can be first position.
[0037] In an embodiment, when the electromagnetic force generated by the coil 108 exceeds a predefined value greater than the spring force of the conical spring 202, the movable electromagnet 106 can move from the first position to second position. In another embodiment, when the movable electromagnet 106 is at the second position and the coil 108 is deenergized upon removal of the electrical supply, the conical spring 202 can facilitate movement of the movable electromagnet 106 from the second position to the first position.
[0038] In an embodiment, the conical spring 202 can includea vertex and a planar surface, where the vertexcan be in contact with the fixed electromagnet 104, and the planar surface can be incontact with the movable electromagnet 106. In another embodiment, the vertex of the conical spring 202 can be in contact with the movable electromagnet 106, and the planar surface of the conical spring 202 can be in contact with the fixed electromagnet 104.
[0039] In an illustrative embodiment, the predefined distance between the fixed electromagnet 104 and the movable electromagnet 106 can be equivalent to length of the conical spring 202. In another illustrative embodiment, the predefined distance can pertain to increased surface area for both the fixed electromagnet 104 and the movable electromagnet 106 and the electromagnetic force can facilitate in bringing the movable electromagnet back to the first position, where the first position can be theinitial position of the movable electromagnet 106. In yet another illustrative embodiment, movement of the movable electromagnet 106 towards the fixed electromagnet 104 can facilitate in generating an impact force in the electromagnetic relay.
[0040] In an illustrative embodiment, the assembly 100 can be configured to perform tripping mechanism in presence of residual flux. In another illustrative embodiment, the conical spring 202 configured between the fixed electromagnet 104 and the movable electromagnet 106 can be based on impact force requirement irrespective of material, shape, and size of the conical spring 202, fixed electromagnet 104, and the movable electromagnet 106.
[0041] In an illustrative embodiment, tripping mechanism and the movement of the movable electromagnet 106 can depend on air gap between the fixed electromagnet 104 and the movable electromagnet 106, where the air gap can be changed. The fixed electromagnet 104 and the movable electromagnet 106 does not come in direct contact with each other and the distance remains equivalent to the length of the conical spring 202. In another illustrative embodiment, the conical spring 202 can be configured to generate opposing forceto the electromagnetic force generated by the coil 108 and facilitate in bringing the movable electromagnet 106 back to the initial position.
[0042] In an illustrative embodiment, the assembly 100 can facilitate in generating improved electromagnetic force between the fixed electromagnet 104 and the movable electromagnet 106, and correspondingly the movable electromagnet 106 can return to the initial position (first position) even in presence of the residual flux.
[0043] In an illustrative embodiment, the conical spring 202 being configured in between the fixed electromagnet 104 and the movable electromagnet 106 can facilitate in providing increased surface area for the fixed electromagnet 104 and/or the removable electromagnet 106 for accommodating the conical spring 202.
[0044] In an illustrative embodiment, an electromagnetic relay can include a tripping mechanism including a coil 108 having predefined number of turns and adapted to be electrically coupled to an electrical supply. The mechanism can include a fixed electromagnet 104 configured inside the coil 108, a movable electromagnet 106 configured inside the coil 108. The movable electromagnet 106 can be positioned at a predefined distance from the fixed electromagnet 104 such that an air gap of the predefined distance is between the fixed electromagnet 104 and the movable electromagnet 106. In another illustrative embodiment, energization of the coil 108 by the electrical supply creates an electromagnetic field that generates an electromagnetic force which moves the movable electromagnet 106 from a first position to a second position inside the coil 108.The first position corresponds to a position where the air gap of predefined distance is between the fixed electromagnet and the movable electromagnet, the second position corresponds to a position where the movable electromagnet is in contact with the fixed contact.
[0045] In an illustrative embodiment, the mechanism can include a conical spring 202 of predefined dimension configured between the fixed electromagnet 104 and the movable electromagnet 106 and configured to generate aspring force opposite to the electromagnetic force generated by the coil 108. In another illustrative embodiment, when the electromagnetic force generated by the coil 108 exceed a predefined value greater than the spring force of the conical spring 202 , the movable electromagnet 106 can be configured to move from the first position to second position. In yet another illustrative embodiment, when the movable electromagnet 106 is at the second position and the coil 108 is deenergized upon removal of the electrical supply, the conical spring 202 can facilitate movement of the movable electromagnet 106 from the second position to the first position.

ADVANTAGES OF THE PRESENT DISCLOSURE
[0046] The present disclosure provides a tripping assembly or mechanism assemblythat facilitates in improving permeability of electromagnets with help of conical spring.
[0047] The present disclosure provides a tripping assembly or mechanism assembly that provides large surface area for electromagnet and the conical spring.
[0048] The present disclosure provides a tripping assembly or mechanism that aids in avoiding residual flux generation and facilitates moving electromagnet to come back to initial position efficiently.
[0049] The present disclosure provides a tripping assembly or mechanism that enables generation of improved electromagnetic force between fixed electromagnet and moving electromagnet.
[0050] The present disclosure provides a tripping assembly or mechanism that efficiently brings the moving electromagnet to its initial position after removal of electrical power.
[0051] The present disclosure provides a tripping assembly or mechanism assembly that does not get affected by generation of residual flux.
[0052] The present disclosure provides a tripping assembly or mechanism where residual flux or magnetism remains in the circuit.