Description:TECHNICAL FIELD
[0001] The present disclosure relates to low voltage switchgear. More particularly, the present invention relates to an arrangement for rotary actuation of contacts in a switch.

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] Switches are devices broadly used for making or breaking the connection in an electric circuit. One such type is a switchgear which is composed of electrical disconnect switches, fuses or circuit breakers used to control, protect, and isolate electrical equipment. One such type of switchgear is low voltage switchgear which is a three-phase power distribution product designed to supply electric power at voltages up to 1,000 volts and current up to 6,000 amps more safely, efficiently, and reliably. In a conventional approach, in case of a multipole switch, contacts of each pole are required to be simultaneously driven and positively connected to the output drive system to overcome limitation of receiving input for actuation of respective pole from adjacent pole. Such process results in delay within contact phases during making or breaking of contacts.
[0004] Positive connection of all contact holders with a common drive system which is typically an output drive shaft is practically difficult since there is difference in travel of mechanism and contact system rotation. Travel of mechanism from Contact closed to open position or vice versa is always more than that of contact system to facilitate actuation of contact system only after dead centre/toggle point of mechanism for quick make and quick break action.
[0005] There is, therefore, a need for an arrangement for rotary actuation of one or more contacts in a switch, which is free from the above discussed problems.

OBJECTS OF THE PRESENT DISCLOSURE
[0006] Some of the objects of the present disclosure, which at least one embodiment herein satisfy are as listed hereinbelow.
[0007] It is an object of the present disclosure to provide an arrangement for rotary actuation of one or more contacts in a switch, which is a multi-pole switch for simultaneous actuation and positive connection within all poles to avoid any delay/difference during making and breaking of contacts within phases.
[0008] It is an object of the present disclosure to provide an arrangement for rotary actuation of one or more contacts in a switch, which is used for low voltage switches with rotary actuating contacts.
[0009] It is an object of the present disclosure to provide an arrangement for rotary actuation of one or more contacts in a switch, which provides an output from the mechanism consisting of solid shaft which triggers output to contacts only at desired position of mechanism springs.
[00010] It is an object of the present disclosure to provide an arrangement for rotary actuation of one or more contacts in a switch, which facilitates simultaneous actuation and positive connection within contact holders and mechanism output shaft.
[00011] It is an object of the present disclosure to provide an arrangement for rotary actuation of one or more contacts in a switch, which eliminates multiple joints for coupling electrical poles.
[00012] It is an object of the present disclosure to provide an arrangement for rotary actuation of one or more contacts in a switch, which has pole actuation independent of input from adjacent poles, thereby increasing reliability during making and breaking of contacts.
[00013] It is an object of the present disclosure to provide an arrangement for rotary actuation of one or more contacts in a switch, which has suitability of connecting additional poles in parallel for maintaining positive drive with mechanism.
[00014] It is an object of the present disclosure to provide an arrangement for rotary actuation of one or more contacts in a switch, which has single square shaft purposing dual feature, that is conversion of rotation angle and coupling between different electrical poles.
[00015] It is an object of the present disclosure to provide an arrangement for rotary actuation of one or more contacts in a switch, which has reliable rigid positive interlock of mechanism and contact system.
[00016] It is an object of the present disclosure to provide an arrangement for rotary actuation of one or more contacts in a switch, which has positive interlocking of individual poles with mechanism.

SUMMARY
[00017] The present disclosure relates to low voltage switchgear. More particularly, the present invention relates to an arrangement for rotary actuation of contacts in a switch.
[00018] An aspect of the present disclosure pertains to an arrangement for rotary actuation of one or more contacts in a switch. The arrangement includes a mechanism operatively coupled to each of the corresponding one or more contacts via a drive shaft of a first pre-defined shape. A drive plate operatively coupled to the drive shaft via a cross sectional slot of a second pre-defined shape, wherein the first pre-defined shape of the drive shaft and the second pre-defined shape of the drive plate corresponds to a similar shape, in order to facilitate an engagement of the drive shaft. one or more coupler pins configured to actuate the drive plate while travelling from an open position to a closed position or vice versa.
[00019] In an aspect, the first pre-defined shape of the drive shaft corresponds to square cross sectional solid shape, wherein the second pre-defined shape of the drive plate corresponds to a square cross-sectional slot.
[00020] In an aspect, a first end of the drive shaft is operatively coupled to the mechanism, wherein a second end of the drive shaft is operatively coupled to a contact holder housed on an opposite end of the mechanism.
[00021] In an aspect, the contact holders are operatively coupled to the drive shaft by square profile slot to engage with drive shaft.
[00022] In an aspect, the drive plate and the one or more coupler pins have a common axis of rotation.
[00023] In an aspect, the one or more coupler pins are mounted on a corresponding end of a rotor plate, wherein the rotor plate is operatively coupled to the drive shaft behind the drive plate wherein the one or more coupler pins are positioned to be housed in corresponding one or more drive plate slots etched along one or more corresponding ends of the drive plate to enable a relative movement.
[00024] In an aspect, the relative movement between the one or more coupler pins and the drive plate is achieved by drive plate slot.
[00025] In an aspect, the arrangement may comprise an operating shaft operatively coupled to the mechanism, wherein the operating shaft is in a perpendicular position with respect to the drive shaft.
[00026] In an aspect, the arrangement may comprise an idler plate operatively coupled to the drive shaft behind the rotor plate, wherein the idler plate is configured to operate along with the rotor plate.
[00027] Various objects, features, aspects, and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components.

BRIEF DESCRIPTION OF DRAWINGS
[00028] 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. The diagrams are for illustration only, which thus is not a limitation of the present disclosure.
[00029] In the figures, similar components and/or features may have the same reference label. Further, various components of the same type may be distinguished by following the reference label with a second label that distinguishes among the similar components. If only the first reference label is used in the specification, the description is applicable to any one of the similar components having the same first reference label irrespective of the second reference label.
[00030] FIG. 1 illustrates an exemplary representation of a front view of a switch which is housed with an arrangement for rotary actuation of one or more contacts, in accordance with an embodiment of the present disclosure.
[00031] FIG. 2 illustrates an exemplary representation of an exploded view of a mechanism and contact system of the apparatus, in accordance with an embodiment of the present disclosure.
[00032] FIG. 3 illustrates an exemplary representation of an isometric view of a mechanism, in accordance with an embodiment of the present disclosure.
[00033] FIG. 4 illustrates an exemplary representation of an internal view of mechanism in OFF position, in accordance with an embodiment of the present disclosure.
[00034] FIG. 5 illustrates an exemplary representation of an internal exploded view of mechanism in OFF position, in accordance with an embodiment of the present disclosure.
[00035] FIG. 6 illustrates an exemplary representation of an internal view of mechanism in ON position, in accordance with an embodiment of the present disclosure.
[00036] FIG. 7 illustrates an exemplary representation of an internal exploded view of mechanism in ON position, in accordance with an embodiment of the present disclosure.
[00037] FIG. 8 illustrates an exemplary representation of an internal front view of mechanism in OFF position, in accordance with an embodiment of the present disclosure.
[00038] FIG. 9 illustrates an exemplary representation of an internal front view of mechanism in ON position, in accordance with an embodiment of the present disclosure.
[00039] FIG. 10 illustrates an exemplary representation of an internal view of contact system to view linkage with mechanism in OFF position, in accordance with an embodiment of the present disclosure.
[00040] FIG. 11 illustrates an exemplary representation of an internal view of contact system to view linkage with mechanism in ON position, in accordance with an embodiment of the present disclosure.
[00041] FIG. 12 illustrates an exemplary representation of stacking of contact holder with mechanism drive shaft in OFF position, in accordance with an embodiment of the present disclosure.
[00042] FIG. 13 illustrates an exemplary representation of stacking of contact holder with mechanism drive shaft in ON position, in accordance with an embodiment of the present disclosure.

DETAILED DESCRIPTION
[00043] The following is a detailed description of embodiments of the disclosure depicted in the accompanying drawings. The embodiments are in such detail as to clearly communicate the disclosure. However, the amount of detail offered is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the scope of the present disclosure as defined by the appended claims.
[00044] 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.
[00045] The present disclosure relates to low voltage switchgear. More particularly, the present invention relates to an arrangement for rotary actuation of contacts in a switch.
[00046] The present disclosure elaborates upon an arrangement for rotary actuation of one or more contacts in a switch. The arrangement includes a mechanism operatively coupled to each of the corresponding one or more contacts via a drive shaft of a first pre-defined shape. A drive plate operatively coupled to the drive shaft via a cross sectional slot of a second pre-defined shape, wherein the first pre-defined shape of the drive shaft and the second pre-defined shape of the drive plate corresponds to a similar shape, in order to facilitate an engagement of the drive shaft. one or more coupler pins configured to actuate the drive plate while travelling from an open position to a closed position or vice versa.
[00047] In an embodiment, the first pre-defined shape of the drive shaft corresponds to square cross sectional solid shape, wherein the second pre-defined shape of the drive plate corresponds to a square cross-sectional slot.
[00048] In an embodiment, a first end of the drive shaft is operatively coupled to the mechanism, wherein a second end of the drive shaft is operatively coupled to a contact holder housed on an opposite end of the mechanism.
[00049] In an embodiment, the contact holders are operatively coupled to the drive shaft by square profile slot to engage with drive shaft.
[00050] In an embodiment, the drive plate and the one or more coupler pins have a common axis of rotation.
[00051] In an embodiment, the one or more coupler pins are mounted on a corresponding end of a rotor plate, wherein the rotor plate is operatively coupled to the drive shaft behind the drive plate wherein the one or more coupler pins are positioned to be housed in corresponding one or more drive plate slots etched along one or more corresponding ends of the drive plate to enable a relative movement.
[00052] In an embodiment, the relative movement between the one or more coupler pins and the drive plate is achieved by drive plate slot.
[00053] In an embodiment, the arrangement may comprise an operating shaft operatively coupled to the mechanism, wherein the operating shaft is in a perpendicular position with respect to the drive shaft.
[00054] In an embodiment, the arrangement may comprise an idler plate operatively coupled to the drive shaft behind the rotor plate, wherein the idler plate is configured to operate along with the rotor plate.
[00055] FIG. 1 illustrates an exemplary representation of a front view of a switch which is housed with an arrangement for rotary actuation of one or more contacts, in accordance with an embodiment of the present disclosure.
[00056] FIG. 2 illustrates an exemplary representation of an exploded view of a mechanism and contact system of the apparatus, in accordance with an embodiment of the present disclosure.
[00057] FIG. 3 illustrates an exemplary representation of an isometric view of a mechanism, in accordance with an embodiment of the present disclosure.
[00058] FIG. 4 illustrates an exemplary representation of an internal view of mechanism in OFF position, in accordance with an embodiment of the present disclosure.
[00059] FIG. 5 illustrates an exemplary representation of an internal exploded view of mechanism in OFF position, in accordance with an embodiment of the present disclosure.
[00060] FIG. 6 illustrates an exemplary representation of an internal view of mechanism in ON position, in accordance with an embodiment of the present disclosure.
[00061] FIG. 7 illustrates an exemplary representation of an internal exploded view of mechanism in ON position, in accordance with an embodiment of the present disclosure.
[00062] FIG. 8 illustrates an exemplary representation of an internal front view of mechanism in OFF position, in accordance with an embodiment of the present disclosure.
[00063] FIG. 9 illustrates an exemplary representation of an internal front view of mechanism in ON position, in accordance with an embodiment of the present disclosure.
[00064] FIG. 10 illustrates an exemplary representation of an internal view of contact system to view linkage with mechanism in OFF position, in accordance with an embodiment of the present disclosure.
[00065] FIG. 11 illustrates an exemplary representation of an internal view of contact system to view linkage with mechanism in ON position, in accordance with an embodiment of the present disclosure.
[00066] FIG. 12 illustrates an exemplary representation of stacking of contact holder with mechanism drive shaft in OFF position, in accordance with an embodiment of the present disclosure.
[00067] FIG. 13 illustrates an exemplary representation of stacking of contact holder with mechanism drive shaft in ON position, in accordance with an embodiment of the present disclosure.
[00068] As illustrated, an arrangement 100 for rotary actuation of one or more contacts 102 in a switch 100-2, can include a mechanism 104 operatively coupled to each of the corresponding one or more contacts 102 via a drive shaft 106 of a first pre-defined shape. In one embodiment, the apparatus 100 can be applied in low voltage switches with rotary actuating contacts.
[00069] In one embodiment, the switch may be a multi-pole for simultaneous actuation and positive connection within all poles to avoid any delay/difference during making and breaking of contacts within phases. In one embodiment, the first pre-defined shape of the drive shaft 106 corresponds to square cross sectional solid shape. In one exemplary embodiment, a first end of the drive shaft 106 is operatively coupled to the mechanism 104, wherein a second end of the drive shaft 106 is operatively coupled to a contact holder 120 housed on an opposite end of the mechanism 104. In such embodiment, the contact holders 120 are operatively coupled to the drive shaft 106 by square profile slot to engage with drive shaft 106.
[00070] The apparatus 100 also includes a drive plate 108 operatively coupled to the drive shaft 106 via a cross sectional slot of a second pre-defined shape. The first pre-defined shape of the drive shaft 106 and the second pre-defined shape of the drive plate 108 are of a similar shape, in order to facilitate an engagement of the drive shaft 106. In one embodiment, the first pre-defined shape of the drive shaft 106 corresponds to square cross sectional solid shape. In another embodiment, the second pre-defined shape of the drive plate 108 corresponds to a square cross-sectional slot.
[00071] Furthermore, the apparatus 100 includes one or more coupler pins 116 which are configured to actuate the drive plate 108 while travelling from an open position to a closed position or vice versa. In one embodiment, the drive plate 108 and the one or more coupler pins 116 have a common axis of rotation. In one specific embodiment, the one or more coupler pins 116 are mounted on a corresponding end of a rotor plate 114, wherein the rotor plate 114 is operatively coupled to the drive shaft 106 behind the drive plate 108, wherein the one or more coupler pins 116 are positioned to be housed in corresponding one or more drive plate slots 118 etched along one or more corresponding ends of the drive plate 108 to enable a relative movement. In such embodiment, the relative movement between the one or more coupler pins 116 and the drive plate 108 is achieved by drive plate slot 118.
[00072] In one embodiment, the apparatus 100 further includes an idler plate 112 operatively coupled to the drive shaft 106 behind the rotor plate 114, wherein the idler plate 112 is configured to operate along with the rotor plate 114.
[00073] In another embodiment, the apparatus 100 may further include an operating shaft 110 operatively coupled to the mechanism 104, wherein the operating shaft 110 is in a perpendicular position with respect to the drive shaft 106.
[00074] In operation, during an OFF position, that is when the one or more contacts 102 are in open position, the one or more coupler pins 116 will be at extreme end of the one or more corresponding drive plate slots 118 (as shown in FIG. 8). Further, during actuation of the mechanism 104, when one or more mechanism springs are charged, the one or more coupler pins 116 rotate and at desired position, engage with opposite end of the one or more corresponding drive plate slots 118, thus initiating actuation of the corresponding one or more drive plate slots 118. Subsequently, during OFF position, till intermediate engagement position is reached, there will be no motion in the drive plate 108, thus facilitating limited output rotation required by the one or more contacts 102. Consequently, post engagement of the one or more coupler pins 116 and the one or more drive plate slots 118, both the one or more coupler pins 116 and the one or more drive plate slots 118 will travel simultaneously till ON position, that is until the one or more contacts 102 are in closed position (as shown in FIG. 9). Further, the actuation of the drive plate 108 will facilitate rotation of the drive shaft 106 (as shown in FIGs. 8-11). Further, the one or more contact holders 120 are positively engaged with the drive shaft 106 by square profile slot to engage with the drive shaft 106.
[00075] In one embodiment, physical contacts can be connected to the corresponding one or more contact holders 120 by methods best suitable for respective type of switch. In one specific embodiment, multiple contact holders 120 can be stacked on the drive shaft 106 as per specific requirement.
[00076] Moreover, in interpreting the specification, all terms should be interpreted in the broadest possible manner consistent with the context. In particular, the terms “comprises” and “comprising” should be interpreted as referring to elements, components, or steps in a non-exclusive manner, indicating that the referenced elements, components, or steps may be present, utilized, or combined with other elements, components, or steps that are not expressly referenced. Where the specification claims refer to at least one of something selected from the group consisting of A, B, C ….and N, the text should be interpreted as requiring only one element from the group, not A plus N, or B plus N, etc.
[00077] While the foregoing describes various embodiments of the invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof. The scope of the invention is determined by the claims that follow. The invention is not limited to the described embodiments, versions, or examples, which are included to enable a person having ordinary skill in the art to make and use the invention when combined with information and knowledge available to the person having ordinary skill in the art.

ADVANTAGES OF THE INVENTION
[00078] The proposed invention provides an arrangement for rotary actuation of one or more contacts in a switch, which is a multi-pole switch for simultaneous actuation and positive connection within all poles to avoid any delay/difference during making and breaking of contacts within phases.
[00079] The proposed invention provides an arrangement for rotary actuation of one or more contacts in a switch, which is used for low voltage switches with rotary actuating contacts.
[00080] The proposed invention provides an arrangement for rotary actuation of one or more contacts in a switch, which provides an output from the mechanism consisting of solid shaft which triggers output to contacts only at desired position of mechanism springs.
[00081] The proposed invention provides an arrangement for rotary actuation of one or more contacts in a switch, which facilitates simultaneous actuation and positive connection within contact holders and mechanism output shaft.
[00082] The proposed invention provides an arrangement for rotary actuation of one or more contacts in a switch, which eliminates multiple joints for coupling electrical poles.
[00083] The proposed invention provides an arrangement for rotary actuation of one or more contacts in a switch, which has pole actuation independent of input from adjacent poles increasing reliability during making and breaking of contacts.
[00084] The proposed invention provides an arrangement for rotary actuation of one or more contacts in a switch, which has suitability of connecting additional poles in parallel for maintaining positive drive with mechanism.
[00085] The proposed invention provides an arrangement for rotary actuation of one or more contacts in a switch, which has single square shaft purposing dual feature, that is conversion of rotation angle and coupling between different electrical poles.
[00086] The proposed invention provides an arrangement for rotary actuation of one or more contacts in a switch, which has reliable rigid positive interlock of mechanism and contact system.
[00087] The proposed invention provides an arrangement for rotary actuation of one or more contacts in a switch, which has positive interlocking of individual poles with mechanism.
, Claims:1. An arrangement (100) for rotary actuation of one or more contacts (102) in a switch, wherein the arrangement (100) comprises:
a mechanism (104) operatively coupled to each of the corresponding one or more contacts (102) via a drive shaft (106) of a first pre-defined shape;
a drive plate (108) operatively coupled to the drive shaft (106) via a cross sectional slot of a second pre-defined shape,
wherein the first pre-defined shape of the drive shaft (106) and the second pre-defined shape of the drive plate (108) corresponds to a similar shape, in order to facilitate an engagement of the drive shaft (106); and
one or more coupler pins (116) configured to actuate the drive plate (108) while travelling from an open position to a closed position or vice versa.
2. The arrangement as claimed in claim 1, wherein the first pre-defined shape of the drive shaft (106) corresponds to square cross sectional solid shape, wherein the second pre-defined shape of the drive plate (108) corresponds to a square cross-sectional slot.
3. The arrangement as claimed in claim 1, wherein a first end of the drive shaft (106) is operatively coupled to the mechanism (104), wherein a second end of the drive shaft (106) is operatively coupled to one or more contact holders (120) housed on an opposite end of the mechanism (104).
4. The arrangement as claimed in claim 3, wherein the one or more contact holders (120) are operatively coupled to the drive shaft (106) by square profile slot to engage with drive shaft (106).
5. The arrangement as claimed in claim 1, wherein the drive plate (108) and the one or more coupler pins (116) have a common axis of rotation.
6. The arrangement as claimed in claim 1, wherein the one or more coupler pins (116) are mounted on a corresponding end of a rotor plate (114), wherein the rotor plate (114) is operatively coupled to the drive shaft (106) behind the drive plate (108), wherein the one or more coupler pins (116) are positioned to be housed in corresponding one or more drive plate slots (118) etched along one or more corresponding ends of the drive plate (108) to enable a relative movement.
7. The arrangement as claimed in claim 6, wherein the relative movement between the one or more coupler pins (116) and the drive plate (108) is achieved by drive plate slot (118).
8. The arrangement as claimed in claim 6, comprising an idler plate (112) operatively coupled to the drive shaft (106) behind the rotor plate (114), wherein the idler plate (112) is configured to operate along with the rotor plate (114).
9. The arrangement as claimed in claim 1, comprising an operating shaft (110) operatively coupled to the mechanism (104), wherein the operating shaft (110) is in a perpendicular position with respect to the drive shaft (106).