Description:TECHNICAL FIELD
[0001] The present disclosure relates to the field of switchgear. More particularly the present disclosure relates to a torque restricting handle for performing charging operation of vacuum circuit breaker inside the switchgear.

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] There is, therefore, a need of XX.

OBJECTS OF THE PRESENT DISCLOSURE
[0004] Some of the objects of the present disclosure, which at least one embodiment herein satisfies are as listed herein below.
[0005] It is an object of the present disclosure to provide a handle for performing charging operation of the vacuum circuit breaker inside the switchgear.
[0006] It is an object of the present disclosure to provide a handle for performing charging operation of the vacuum circuit breaker inside the switchgear, which is easy to use.
[0007] It is an object of the present disclosure to provide a handle for performing charging operation of the vacuum circuit breaker inside the switchgear, which exerts not extra torque on the charging mechanism inside the switchgear.
[0008] It is an object of the present disclosure to provide a handle for performing charging operation of the vacuum circuit breaker inside the switchgear, which protects the charging mechanism as a result of applying a greater torque.
[0009] It is an object of the present disclosure to provide a handle for performing charging operation of the vacuum circuit breaker inside the switchgear, which requires less maintenance cost.
[0010] It is an object of the present disclosure to provide a cost-effective handle for performing charging operation of the vacuum circuit breaker inside the switchgear.

SUMMARY
[0011] The present disclosure relates to the field of switchgear. More particularly the present disclosure relates to a torque restricting handle for performing charging operation of vacuum circuit breaker inside the switchgear.
[0012] An aspect of the present disclosure pertains to a handle adapted to be configured with a vacuum circuit breaker, for performing charging operation, inside a switchgear. The handle includes a first member, at a first end, adapted to be coupled with a charging member of the vacuum circuit breaker. The first member comprises a slot at a second end; and a second member is mechanically configured with the first member such that rotating the second member applies a corresponding rotating torque to the first member. The second member is mechanically configured with the first member through a coupling arrangement including an engaging member having a protrusion, at a third end, configured to be engaged against the slot facilitating application of the rotating torque to the first member, an elastic member operatively configured with the engaging member, at a fourth end of the engaging member, facilitating the engagement of the protrusion against the slot. The elastic member is configured to move form a first position when the protrusion is engaged against the slot to a second position when the protrusion is disengaged from the slot, after a pre-defined threshold torque is applied to the first member through the second member.
[0013] In an aspect, the slot and the protrusion may be tapered and are mated together while the protrusion is engaged against the slot facilitating the application of rotating torque to the first member.
[0014] In an aspect, the elastic member may comprise a spring.
[0015] In an aspect, the coupling member may comprise a covering sleeve configured to cover the coupling arrangement.
[0016] In an aspect, the coupling arrangement may comprise a locking member configured with the covering sleeve through a thread arrangement.
[0017] In an aspect, the locking member may be configured to force the elastic member against the engaging member such that the protrusion remains engaged with the slot.
[0018] In an aspect, the locking member may be rotated along the thread arrangement for selecting the pre-defined threshold torque by changing the force applied on the elastic member.
[0019] In an aspect, the application of the pre-defined threshold torque to the first member may signify the completion of charging operation.
[0020] 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
[0021] 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.
[0022] 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.
[0023] FIG. 1 illustrates exemplary representation of the handle, in accordance with an embodiment of the present disclosure.
[0024] FIG. 2A illustrates exemplary representation of the handle when the protrusion is engaged against the slot, in accordance with an embodiment of the present disclosure.
[0025] FIG. 2B illustrates exemplary representation of the handle when the protrusion is dis-engaged from the slot, in accordance with an embodiment of the present disclosure.

DETAILED DESCRIPTION
[0026] 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.
[0027] 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.
[0028] The present disclosure relates to the field of switchgear. More particularly the present disclosure relates to a torque restricting handle for performing charging operation of vacuum circuit breaker inside the switchgear.
[0029] The present disclosure elaborates upon a handle adapted to be configured with a vacuum circuit breaker, for performing charging operation, inside a switchgear. The handle includes a first member, at a first end, adapted to be coupled with a charging member of the vacuum circuit breaker. The first member comprises a slot at a second end; and a second member is mechanically configured with the first member such that rotating the second member applies a corresponding rotating torque to the first member. The second member is mechanically configured with the first member through a coupling arrangement including an engaging member having a protrusion, at a third end, configured to be engaged against the slot facilitating application of the rotating torque to the first member, an elastic member operatively configured with the engaging member, at a fourth end of the engaging member, facilitating the engagement of the protrusion against the slot. The elastic member is configured to move form a first position when the protrusion is engaged against the slot to a second position when the protrusion is disengaged from the slot, after a pre-defined threshold torque is applied to the first member through the second member.
[0030] In an embodiment, the slot and the protrusion can be tapered and are mated together while the protrusion is engaged against the slot facilitating the application of rotating torque to the first member.
[0031] In an embodiment, the elastic member can comprise a spring.
[0032] In an embodiment, the coupling member can comprise a covering sleeve configured to cover the coupling arrangement.
[0033] In an embodiment, the coupling arrangement can comprise a locking member configured with the covering sleeve through a thread arrangement.
[0034] In an embodiment, the locking member can be configured to force the elastic member against the engaging member such that the protrusion remains engaged with the slot.
[0035] In an embodiment, the locking member can be rotated along the thread arrangement for selecting the pre-defined threshold torque by changing the force applied on the elastic member.
[0036] In an embodiment, the application of the pre-defined threshold torque to the first member can signify the completion of charging operation.
[0037] FIG. 1 illustrates exemplary representation of the handle, in accordance with an embodiment of the present disclosure.
[0038] FIG. 2A illustrates exemplary representation of the handle when the protrusion is engaged against the slot, in accordance with an embodiment of the present disclosure.
[0039] FIG. 2B illustrates exemplary representation of the handle when the protrusion is dis-engaged from the slot, in accordance with an embodiment of the present disclosure.
[0040] As illustrated, a handle 100 adapted to be configured with a vacuum circuit breaker, for performing charging operation, inside a switchgear (not shown) can include a first member 102, at a first end, adapted to be coupled with a charging member (not shown) of the vacuum circuit breaker (not shown). The first member 102 can include a slot 104 at a second end. A second member 106 can be mechanically configured with the first member 102 such that rotating the second member 106 can apply a corresponding rotating torque to the first member 102. The second member 106 can be mechanically configured with the first member through a coupling arrangement.
[0041] In an embodiment, the coupling arrangement can include an engaging member 108 that can have a protrusion 110, at a third end. The protrusion can 110 be configured to be engaged against the slot 104 facilitating application of the rotating torque to the first member 102. An elastic member 112 can be operatively configured with the engaging member 108, at a fourth end of the engaging member 108. The elastic member 112 can facilitate the engagement of the protrusion 110 against the slot 104. The elastic member 112 can include but without limiting to a spring. The slot 104 and the protrusion 110 can be tapered and can be mated together while the protrusion is engaged against the slot facilitating an efficient application of rotating torque to the first member 102.
[0042] In an embodiment, the coupling arrangement can include a covering sleeve 114 that can be configured to cover the coupling arrangement. The coupling arrangement can further include a locking member 116 that can be configured with the covering sleeve 114 through a thread arrangement. The locking member 116 can be configured to force the elastic member 112 against the engaging member 108 such that the protrusion 110 remains engaged with the slot 104. The locking member 116 can be rotated along the thread arrangement for selecting the pre-defined threshold torque by changing the force applied on the elastic member.
[0043] The elastic member is configured to move form a first position when the protrusion is engaged against the slot to a second position when the protrusion is disengaged from the slot, after a pre-defined threshold torque is applied to the first member through the second member. The application of the pre-defined threshold torque to the first member can signify the completion of charging operation. When the pre-defined threshold torque is applied to the first member, then a resistive force opposite to the force applied by the elastic member, on the engaging member, can be exerted in the engaging member. The resistive force can be divided in to two components one can be vertical component and another can be horizontal component.
[0044] In an embodiment, the vertical component can be exerted in a direction perpendicular to a tape surface of the protrusion and the horizontal component can be exerted in a direction away from the first member. The combined effect of the vertical component and the horizontal component can facilitate the disengagement of the protrusion 110 from the slot 104 and eventually the further rotation of the second member 106 can no further apply the rotating torque to the first member 102. In this way the unnecessary torque application to the first member 102 can be prevented and the mechanical assembly inside the switchgear can be protected from damage.
[0045] In an embodiment, the locking member 114 can be rotated along the thread arrangement in the covering sleeve to vary the pre-defined threshold torque value that is to be applied to the first member. If the locking member 116 is rotated clockwise, the locking member can further move towards the elastic member and correspondingly the pre-defined threshold torque value can be increased. If the locking member 116 is rotated anti-clockwise, the locking member 116 can move away from the elastic member and correspondingly the pre-defined threshold torque value can be decreased.
[0046] 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, 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 N, etc.
[0047] 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
[0048] The proposed invention provides a handle for performing charging operation of the vacuum circuit breaker inside the switchgear.
[0049] The proposed invention provides a handle for performing charging operation of the vacuum circuit breaker inside the switchgear, which is easy to use.
[0050] The proposed invention provides a handle for performing charging operation of the vacuum circuit breaker inside the switchgear, which exerts not extra torque on the charging mechanism inside the switchgear.
[0051] The proposed invention provides a handle for performing charging operation of the vacuum circuit breaker inside the switchgear, which protects the charging mechanism as a result of applying a greater torque.
[0052] The proposed invention provides a handle for performing charging operation of the vacuum circuit breaker inside the switchgear, which requires less maintenance cost.
[0053] The proposed invention provides a cost-effective handle for performing charging operation of the vacuum circuit breaker inside the switchgear.

We Claims:

1. A handle adapted to be configured with a vacuum circuit breaker (VCB), for performing charging operation, inside a switchgear, the handle comprising:
a first member, at a first end, adapted to be coupled with a charging member of the vacuum circuit breaker, wherein the first member comprises a slot at a second end; and
a second member is mechanically configured with the first member such that rotating the second member applies a corresponding rotating torque to the first member, wherein the second member is mechanically configured with the first member through a coupling arrangement comprising:
an engaging member having a protrusion, at a third end, configured to be engaged against the slot facilitating application of the rotating torque to the first member,
an elastic member operatively configured with the engaging member, at a fourth end of the engaging member, facilitating the engagement of the protrusion against the slot, wherein the elastic member is configured to move form a first position when the protrusion is engaged against the slot to a second position when the protrusion is disengaged from the slot, after a pre-defined threshold torque is applied to the first member through the second member.
2. The handle as claimed in the claim 1, wherein the slot and the protrusion are tapered and are mated together while the protrusion is engaged against the slot facilitating the application of rotating torque to the first member.
3. The handle as claimed in the claim 1, wherein the elastic member comprises a spring.
4. The handle as claimed in the claim 1, wherein the coupling member comprises a covering sleeve configured to cover the coupling arrangement.
5. The handle as claimed in the claim 4, wherein the coupling arrangement comprises a locking member configured with the covering sleeve through a thread arrangement.
6. The handle as claimed in the claim 5, wherein the locking member is configured to force the elastic member against the engaging member such that the protrusion remains engaged with the slot.
7. The handle as claimed in the claim 6, wherein the locking member is rotated along the thread arrangement for selecting the pre-defined threshold torque by changing the force applied on the elastic member.
8. The handle as claimed in the claim 1, wherein the application of the pre-defined threshold torque to the first member signifies the completion of charging operation.