The present disclosure relates to the field of low voltage switch
gear. More particularly, the present invention relates to complete manual independent mechanism for driving an electrical switching device/switch 5 disconnector.
BACKGROUND
[0002] Background description includes information that may be useful in
understanding the present invention. It is not an admission that any of the
10 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] Electrical switching apparatus, such as switch disconnector,
provides isolation and is capable of making, carrying and breaking currents under normal circuit conditions (which may include specified operating overload
15 conditions for specific time) and also under specified abnormal circuit conditions such as those short circuit for a specified time. These are suitable for diverse applications, in motor control centers, in switchboards and as main switches in various equipment and machines. These switches are ideal for withstanding higher short circuit currents for short time duration.
20 [0004] In current system there is some degrees of overlap between the
rotation of handle and contact system rotation, this gives rise to manual dependency. So, the mechanism rotation post dead center can be manually influenced by the user by applying external force during abusive operation which will affect contact system velocity. But by using this particular embodiment, the
25 user while operating will have no influence on contact opening/closing velocity and will not be able to stop or cause any hindrance to contact system motion thus adding to reliability of switch.
[0005] There is, therefore, a need of an improved contact driving system
for electrical devices, which are free from above discussed problems.

OBJECTS OF THE PRESENT DISCLOSURE
[0006] Some of the objects of the present disclosure, which at least one
embodiment herein satisfies are as listed herein below.
[0007] It is an object of the present disclosure to provide a contact driving
5 system for an electrical device, which is independent of the driving force & speed
of the user.
[0008] It is an object of the present disclosure to provide a contact driving
system for an electrical device, which make sure that the contact closing and
opening is smooth without getting altered by external means.
10 [0009] It is an object of the present disclosure to provide a contact driving
system for an electrical device, which is simple and easy to use.
[0010] It is an object of the present disclosure to provide a contact driving
system for an electrical device, which is cost effective.
[0011] It is an object of the present disclosure to provide a contact driving
15 system for an electrical device, which requires less maintenance.
SUMMARY
[0012] The present disclosure relates to the field of low voltage switch
gear. More particularly, the present invention relates to complete manual
20 independent mechanism for driving an electrical switching device/switch disconnector.
[0013] An aspect of the present disclosure pertains to a contact driving
system for an electrical device. The contact driving system includes a housing, a first rotor inside the housing. A second rotor inside the housing, and operatively
25 configured, through a gear arrangement, with the first rotor and contacts of the electrical device such that a first rotating motion of the first rotor in a first direction facilitates a second rotating motion of the second rotor in a second direction. The second rotating motion facilitates, through a driving mechanism, driving of the contacts of the electrical device. The driving mechanism comprises
30 one or more springs being configured between distal ends of the second rotor and the housing. The one or more springs are configured to drive, after getting

charged by the second rotating motion, the contacts of electrical device with a pre¬defined force irrespective of the first rotating motion and the second rotating motion.
[0014] In an aspect, the first rotor may be configured to rotate in
5 clockwise direction to drive the contacts in electrical OFF condition and the first rotor is configured to rotate in anti-clockwise direction to drive the contacts in electrical ON condition.
[0015] In an aspect, the one or more springs may get charged by rotating
the first rotor, by a pre-defined angle, in any of the clockwise direction and the
10 anti-clockwise direction.
[0016] In an aspect, the gear arrangement system may include a first gear
operatively configured with the first rotor. One or more second gears operatively configured with the first gear and the second rotor, such that a third motion of the first gear in the first direction facilitates a fourth motion of the one or more second
15 gears in the second direction facilitating the second rotating motion of the second rotor.
[0017] In an aspect, the one or more second gear may be coupled with
each other through one or more first pins.
[0018] In an aspect, the one or more second gear may be coupled with the
20 contacts of the electrical contacts through one or more second pins.
[0019] In an aspect, the driving mechanism may comprise a CAM
configured with the second rotor and two leaf springs.
[0020] In an aspect, the CAM may comprise a hexagonal shape according
to the angle of rotation of the CAM for enabling three stable positions.
25 [0021] In an aspect, the leaf springs may provide biasing in electrical ON
condition and the electrical OFF condition and enable stable test position.
[0022] 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
30 like numerals represent like components.

BRIEF DESCRIPTION OF DRAWINGS
[0023] 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 5 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.
[0024] In the figures, similar components and/or features may have the
same reference label. Further, various components of the same type may be
10 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.
15 [0025] FIG. 1 illustrates exemplary representation of a contact driving
system for an electrical device, in accordance with an embodiment of the present disclosure.
[0026] FIG. 2A-C illustrates exemplary representation of different views
of the contact driving system, in accordance with an embodiment of the present
20 disclosure.
[0027] FIG. 3A-C illustrates exemplary representation of the contact
driving system under (OFF to ON) operating conditions, in accordance with an
embodiment of the present disclosure.
[0028] FIG. 4A-D illustrates exemplary representation of CAM and leaf
25 springs of the contact driving system for OFF to test condition, in accordance with an embodiment of the present disclosure.
DETAILED DESCRIPTION
[0029] The following is a detailed description of embodiments of the
30 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.
5 [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 to the field of low voltage switch
10 gear. More particularly, the present invention relates to complete manual independent mechanism for driving an electrical switching device/switch disconnector.
[0032] The present disclosure elaborates upon a contact driving system for
an electrical device that can be but not limited to switch disconnector and
15 switching device. The contact driving system includes a housing, a first rotor inside the housing. A second rotor inside the housing, and operatively configured, through a gear arrangement, with the first rotor and contacts of the electrical device such that a first rotating motion of the first rotor in a first direction facilitates a second rotating motion of the second rotor in a second direction. The
20 second rotating motion facilitates, through a driving mechanism, driving of the contacts of the electrical device. The driving mechanism comprises one or more springs being configured between distal ends of the second rotor and the housing. The one or more springs are configured to drive, after getting charged by the second rotating motion, the contacts of electrical device with a pre-defined force
25 irrespective of the first rotating motion and the second rotating motion.
[0033] In an embodiment, the first rotor can be configured to rotate in
clockwise direction to drive the contacts in electrical OFF condition and the first rotor is configured to rotate in anti-clockwise direction to drive the contacts in electrical ON condition.

[0034] In an embodiment, the one or more springs can get charged by
rotating the first rotor, by a pre-defined angle, in any of the clockwise direction
and the anti-clockwise direction.
[0035] In an embodiment, the gear arrangement system can include a first
5 gear operatively configured with the first rotor. One or more second gears
operatively configured with the first gear and the second rotor, such that a third
motion of the first gear in the first direction facilitates a fourth motion of the one
or more second gears in the second direction facilitating the second rotating
motion of the second rotor.
10 [0036] In an embodiment, the one or more second gear can be coupled
with each other through one or more first pins.
[0037] In an embodiment, the one or more second gear can be coupled
with the contacts of the electrical contacts through one or mor second pins.
[0038] In an embodiment, the driving mechanism can comprise a CAM
15 configured with the second rotor and two leaf springs.
[0039] In an embodiment, the CAM can comprise a hexagonal shape
according to the angle of rotation of the CAM for enabling three stable positions.
[0040] In an embodiment, the leaf springs can provide biasing in electrical
ON condition and the electrical OFF condition and enable stable test position.
20 [0041] FIG. 1 illustrates exemplary representation of a contact driving
system for an electrical device, in accordance with an embodiment of the present
disclosure.
[0042] FIG. 2A-C illustrates exemplary representation of different views
of the contact driving system, in accordance with an embodiment of the present 25 disclosure.
[0043] FIG. 3A-C illustrates exemplary representation of the contact
driving system under (OFF to ON) operating conditions, in accordance with an
embodiment of the present disclosure.
[0044] FIG. 4A-D illustrates exemplary representation of CAM and leaf
30 springs of the contact driving system for OFF to test condition, in accordance with
an embodiment of the present disclosure.

[0045] As illustrated, a contact driving system 100 for an electrical device
can includes a housing 102, a first rotor 104 inside the housing. A second rotor 106 inside the housing. The first rotor 104 and the second rotor 106 can be configured to rotate on their own axis. The first rotor 104 can be configured to 5 rotate in clockwise direction to drive the contacts in electrical OFF condition and in anti-clockwise direction to drive the contacts in electrical ON condition. The second rotor 106 can be operatively configured, through a gear arrangement, with the first rotor 104 and contacts of the electrical device such that a first rotating motion of the first rotor 104 in a first direction facilitates a second rotating motion
10 of the second rotor 106 in a second direction. The first direction and the second direction can be perpendicular to each other. The first rotor is configured to rotate by 70-90 degrees in both the clockwise and anti-clock wise direction and a similar effect is transferred in the second rotor 106 to drive the contacts in electrical ON and electrical OFF condition. An operation of the system can be a toggling type
15 operation. The second rotor 106 can be rotate using a CAM profile (not shown).
[0046] In an embodiment, the second rotating motion can facilitate driving
of the contacts of the electrical device through a driving mechanism. The driving mechanism can include one or more springs 108 that can be configured, through one or more arms 122, between distal ends 106-1 of the second rotor 106 and the
20 housing 102. The one or more springs 108 can be configured to drive, after getting charged by the second rotating motion, the contacts of electrical device with a pre¬defined force irrespective of the first rotating motion of the first rotor 104 and the second rotating motion of the second rotor 106. The first rotor 104 can be configured to rotate by 70-90 degrees in either of the clockwise and anti-clock
25 wise direction and a similar effect is transferred to the second rotor 106 to drive the contacts in electrical ON and electrical OFF condition. The one or more springs 108 can get charged by rotating the first rotor 104, by a pre-defined angle (between 70-90 degrees), in any of the clockwise direction and the anti-clockwise direction. The predefined angle can be corresponding to dead centre or middle
30 point of the toggle operation of the contact driving system 100. The one or more springs 108 can be configured with the second rotor 106 that drives contact

system of the electrical device. The connection between second rotor and contact system can be in such a way that the second rotors will only drive the contact system after crossing a toggle point of the first gear 110. After crossing the toggle point, the second rotor and contact system, both can rotate by spring (108) energy 5 independent of operator action.
[0047] In an embodiment, the gear arrangement system can include a first
gear 110 that can be operatively configured with the first rotor 104. The first gear 110 can be a vertical gear. One or more second gears 112 can be operatively configured with the first gear 110 and the second rotor 106, such that a third
10 motion of the first gear 110 in the first direction (vertical direction) can facilitate a fourth motion of the one or more second gears 112 in the second direction (horizontal direction) facilitating the second rotating motion of the second rotor 106. The one or more second gears 112 can be coupled with each other through one or more first pins 114. The one or more second gears 112 can be coupled with
15 the contacts of the electrical contacts through one or mor second pins 116. The driving mechanism can comprise a CAM 118 that can be configured with the second rotor 106 and two leaf springs 120. The CAM 118 can include a hexagonal shape according to the angle of rotation of the CAM 118 for enabling three stable positions. The leaf springs 120 can provide biasing in electrical ON condition and
20 the electrical OFF condition and enable stable test position.
[0048] 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
25 that the referenced elements, components, or steps may be present, or 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
30 N, etc.

[0049] 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 5 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
10 [0050] The proposed invention provides a contact driving system for an
electrical device, which is independent of the driving force & speed of the user.
[0051] The proposed invention provides a contact driving system for an
electrical device, which make sure that the contact closing and opening is smooth
without getting altered by external means.
15 [0052] The proposed invention provides a contact driving system for an
electrical device, which is simple and easy to use.
[0053] The proposed invention provides a contact driving system for an
electrical device, which is cost effective.
[0054] The proposed invention provides a contact driving system for an
20 electrical device, which requires less maintenance.

We Claim:

1. A contact driving system for an electrical device, the contact driving
system comprising:
5 a housing;
a first rotor inside the housing;
a second rotor inside the housing, and operatively configured,
through a gear arrangement, with the first rotor and contacts of the
electrical device such that a first rotating motion of the first rotor in a first
10 direction facilitates a second rotating motion of the second rotor in a
second direction, and the second rotating motion facilitates, through a driving mechanism, driving of the contacts of the electrical device, wherein
the driving mechanism comprises one or more springs
15 being configured between distal ends of the second rotor and the
housing, and the one or more springs are configured to drive, after
getting charged by the second rotating motion, the contacts of
electrical device with a pre-defined force irrespective of the first
rotating motion and the second rotating motion.
20 2. The contact driving system as claimed in claim 1, wherein the first rotor is
configured to rotate in clockwise direction to drive the contacts in electrical OFF condition and the first rotor is configured to rotate in anti-clockwise direction to drive the contacts in electrical ON condition.
3. The contact driving system as claimed in claim 2, wherein the one or more
25 springs get charged by rotating the first rotor, by a pre-defined angle, in
any of the clockwise direction and the anti-clockwise direction.
4. The contact driving system as claimed in claim 1, wherein the gear
arrangement system comprises:
a first gear operatively configured with the first rotor,
30 one or more second gears operatively configured with the first gear
and the second rotor, such that a third motion of the first gear in the first

direction facilitates a fourth motion of the one or more second gears in the second direction facilitating the second rotating motion of the second rotor.
5. The contact driving system as claimed in claim 1, wherein the one or more second gear are coupled with each other through one or more first pins.
6. The contact driving system as claimed in claim 1, wherein the one or more second gear are coupled with the contacts of the electrical contacts through one or mor second pins.
7. The contact driving system as claimed in claim 1, wherein the driving mechanism comprises a CAM configured with the second rotor and one or more leaf springs.
8. The contact driving system as claimed in claim 7, wherein the CAM comprises a hexagonal shape according to the angle of rotation of the CAM for enabling three stable positions.
9. The contact driving system as claimed in claim 7, wherein the leaf springs provide biasing in electrical ON condition and the electrical OFF condition and enable stable test position.