DESC:WIRING HARNESS AND METHOD OF MANUFACTURE THEREOF
CROSS REFERENCE TO RELATED APPLICATIONS
The present application claims priority from Indian Provisional Patent Application No. 202421049563 filed on 28/06/2024, the entirety of which is incorporated herein by a reference.
TECHNICAL FIELD
The present disclosure generally relates to a wiring harness. Particularly, the present disclosure relates to a spring-action busbar assembly for grounding a shielded cable. Furthermore, the present disclosure relates to a method for grounding a shielded cable using a spring-action busbar assembly.
BACKGROUND
Recently, there has been a rapid development in the automotive technologies. The two-wheeler automobiles are particularly popular due to their affordability and lower cost of running. The modern EVs rely extensively on wiring harnesses to facilitate the transfer of electrical power between various components. These harnesses often carry high levels of electrical current, which can generate substantial electromagnetic interference (EMI).
The wiring harnesses mitigates the electromagnetic interference and ensure compliance with electromagnetic compatibility (EMC) standards. The shielding for the wire harness functions to contain EMI and is conventionally required to be electrically grounded. However, existing grounding methods for shielded wiring harnesses suffer from several limitations. Traditional techniques, such as manual crimping of shield wires or the use of multiple metallic components for grounding, involve complex assembly procedures. These approaches not only increase the overall labour required but also pose occupational risks to workers due to the high degree of manual effort and tool handling involved. Moreover, such conventional grounding methods are both time-consuming and cost inefficient. The assembly process involves multiple parts and numerous steps, which significantly elevates production time and costs. Another critical drawback of these existing methods is the inconsistency in grounding quality. The improper or incomplete grounding may result in insufficient EMI shielding, adversely affecting the performance and reliability of the vehicle's electrical systems.
Therefore, there exists a need for an improved solution for shielded wiring harnesses in electric vehicles which overcomes the one or more problems associated as set forth above.
SUMMARY
An object of the present disclosure is to provide a spring-action busbar assembly for grounding a shielded cable.
Another object of the present disclosure is to provide a method for grounding a shielded cable using a spring-action busbar assembly.
In accordance with first aspect of the present disclosure, there is provided a spring-action busbar assembly for grounding a shielded cable. The spring-action busbar assembly comprises a spring-type busbar configured to encircle a metallic shield of the shielded cable and adapted to exert a controlled pressure on the metallic shield to ensure electrical contact, a connection means integral to the busbar configured to secure the busbar to a grounding point and an extended grounding path comprising a wire or a conductive element configured to connect the busbar to a remote grounding point when a local grounding point is unavailable. The spring-type busbar is configured to provide a secure and continuous grounding connection.
The present disclosure provides the spring-action busbar assembly for grounding the shielded cable. The spring-action busbar assembly as disclosed by present disclosure is advantageous for grounding shielded cables in electric vehicles over conventional grounding methods. Beneficially, the spring-action busbar assembly simplifies the assembly process which ensures consistent and secure electrical contact with the metallic shield, thereby eliminates the need for complex manual crimping or multiple metal components. Beneficially, the spring-action busbar assembly provides reliable and uniform grounding which improves the EMI suppression. Advantageously, the spring-action busbar assembly offers flexible installation options. Additionally, the spring-action busbar assembly enhances the corrosion resistance and electrical performance. Moreover, the spring-action busbar assembly improves environmental protection, making the assembly suitable for harsh automotive conditions.
In accordance with second aspect of the present disclosure, there is provided a method for grounding a shielded cable using a spring-action busbar assembly. The method comprising exposing a metallic shield of the shielded cable at an accessible area, encircling the exposed metallic shield with a spring-type busbar made of a conductive material selected from the group consisting of tin-plated copper, silver-plated steel, nickel-plated steel, or aluminum, the busbar being configured to exert a controlled pressure on the metallic shield, securing the busbar to the metallic shield using a connection means comprising at least one of a tab, a hole for a fastener, or a terminal and connecting the busbar to a grounding point, either directly or via an extended grounding path comprising a wire or a conductive element, to establish a secure and continuous grounding connection for minimizing electromagnetic interference.
Additional aspects, advantages, features and objects of the present disclosure would be made apparent from the drawings and the detailed description of the illustrative embodiments constructed in conjunction with the appended claims that follow.
It will be appreciated that features of the present disclosure are susceptible to being combined in various combinations without departing from the scope of the present disclosure as defined by the appended claims.

BRIEF DESCRIPTION OF DRAWINGS
The summary above, as well as the following detailed description of illustrative embodiments, is better understood when read in conjunction with the appended drawings. For the purpose of illustrating the present disclosure, exemplary constructions of the disclosure are shown in the drawings. However, the present disclosure is not limited to specific methods and instrumentalities disclosed herein. Moreover, those in the art will understand that the drawings are not to scale. Wherever possible, like elements have been indicated by identical numbers.
Embodiments of the present disclosure will now be described, by way of example only, with reference to the following diagrams wherein:
FIG. 1 illustrates an exploded view of a spring-action busbar assembly for grounding a shielded cable, in accordance with an aspect of the present disclosure.
FIG. 2a & 2b illustrates a perspective view of an inward pressure busbar and outward pressure busbar, in accordance with another embodiment of the present disclosure.
FIG. 3 illustrates a flow chart of a method for grounding a shielded cable using a spring-action busbar assembly, in accordance with another aspect of the present disclosure.
In the accompanying drawings, an underlined number is employed to represent an item over which the underlined number is positioned or an item to which the underlined number is adjacent. A non-underlined number relates to an item identified by a line linking the non-underlined number to the item. When a number is non-underlined and accompanied by an associated arrow, the non-underlined number is used to identify a general item at which the arrow is pointing.

DETAILED DESCRIPTION
The following detailed description illustrates embodiments of the present disclosure and ways in which they can be implemented. Although some modes of carrying out the present disclosure have been disclosed, those skilled in the art would recognise that other embodiments for carrying out or practising the present disclosure are also possible.
The description set forth below in connection with the appended drawings is intended as a description of certain embodiments of a spring-action busbar assembly for grounding a shielded cable and is not intended to represent the only forms that may be developed or utilised. The description sets forth the various structures and/or functions in connection with the illustrated embodiments; however, it is to be understood that the disclosed embodiments are merely exemplary of the disclosure that may be embodied in various and alternative forms. The figures are not necessarily to scale; some features may be exaggerated or minimised to show details of particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention.
While the disclosure is susceptible to various modifications and alternative forms, specific embodiment thereof has been shown by way of example in the drawings and will be described in detail below. It should be understood, however, that it is not intended to limit the disclosure to the particular forms disclosed, but on the contrary, the disclosure is to cover all modifications, equivalents, and alternatives falling within the scope of the disclosure.
The terms “comprise”, “comprises”, “comprising”, “include(s)”, or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a setup, system that comprises a list of components or steps does not include only those components or steps but may include other components or steps not expressly listed or inherent to such setup or system. In other words, one or more elements in a system or apparatus preceded by “comprises... a” does not, without more constraints, preclude the existence of other elements or additional elements in the system or apparatus.
In the following detailed description of the embodiments of the disclosure, reference is made to the accompanying drawings and which are shown by way of illustration specific embodiments in which the disclosure may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the disclosure, and it is to be understood that other embodiments may be utilized and that changes may be made without departing from the scope of the present disclosure. The following description is, therefore, not to be taken in a limiting sense.
The present disclosure will be described herein below with reference to the accompanying drawings. In the following description, well known functions or constructions are not described in detail since they would obscure the description with unnecessary detail.
As used herein, the terms “electric vehicle”, “EV”, and “EVs” are used interchangeably and refer to any vehicle having stored electrical energy, including the vehicle capable of being charged from an external electrical power source. This may include vehicles having batteries which are exclusively charged from an external power source, as well as hybrid-vehicles which may include batteries capable of being at least partially recharged via an external power source. Additionally, it is to be understood that the ‘electric vehicle’ as used herein includes electric two-wheeler, electric three-wheeler, electric four-wheeler, electric pickup trucks, electric trucks and so forth.
As used herein, the term “spring-action busbar assembly”, “busbar assembly” and “assembly” are used interchangeably and refer to an electrically conductive assembly comprising a busbar element formed with inherent spring characteristics, configured to exert a controlled mechanical pressure against a conductive surface such as a metallic shield of a shielded cable to establish and maintain a secure electrical grounding connection. The spring action of the busbar enables the busbar to automatically conform to the surface contours of the shielded cable, ensuring continuous contact without the need for excessive mechanical fastening or manual deformation.
As used herein, the terms “shielded cable” refers to an electrical cable comprising at least one conductive core or conductor surrounded by an insulating layer and further enclosed by a conductive shielding layer. The shielding layer, typically made of braided wire, foil, or a metallic wrap, is configured to prevent or reduce electromagnetic interference (EMI) by containing emitted signals and protecting the internal conductors from external electromagnetic noise. The shield may be grounded to a reference point to ensure effective EMI suppression and maintain signal integrity within the cable.
As used herein, the term “spring-type busbar” and “busbar” are used interchangeably and refer to an electrically conductive component formed from a resilient material, such as pre-formed sheet metal, that is shaped and configured to exert a controlled elastic force when installed. The spring-type busbar is designed to apply pressure either inward or outward against a conductive surface, such as a metallic shield of a shielded cable, to establish and maintain a stable electrical contact.
As used herein, the term “metallic shield” refers to a conductive layer or sheath formed from a metal or metal-based material that is disposed around at least a portion of an insulated electrical conductor or cable. The metallic shield is configured to attenuate or block electromagnetic interference (EMI) by providing a low-impedance path to ground for stray electromagnetic signals. The metallic shield may be implemented in various forms, including but not limited to braided wire mesh, metal foil wrap, or conductive polymer coatings incorporating metallic particles.
As used herein, the term “connection means” refers to any structural feature, component, or mechanism that facilitates the mechanical and/or electrical attachment of the spring-type busbar to a grounding point. The connection means may include, but is not limited to, one or more apertures, holes, tabs, lugs, brackets, clamps, or any equivalent fastening element adapted to receive fasteners such as screws, bolts, rivets, or clips.
As used herein, the term “grounding point” refers to a designated location or conductive surface within a vehicle or electrical system that is electrically connected to a common ground potential, typically the vehicle chassis or an equivalent ground plane. The grounding point serves as a reference voltage level (usually zero volts) and facilitates the safe dissipation of electrical currents, including electromagnetic interference (EMI), static charges, or fault currents, from various components such as shielded cables or electrical devices. The grounding point may be local located in close proximity to the component being grounded or remote, and may include structural elements, dedicated grounding terminals, or grounding conductors within the vehicle.
As used herein, the term “extended grounding path” and “grounding path” are used interchangeably and refer to a conductive pathway configured to electrically connect a spring-type busbar or grounding element to a grounding point that is physically located away from the immediate vicinity of the shielded cable or busbar assembly. The extended grounding path comprises at least one electrically conductive component, such as a wire, strip, or braided conductor, optionally terminating in a connector or terminal (e.g., ring-type, piggyback-type, or barrel-type), and is designed to maintain electrical continuity between the metallic shield of the cable and a remote grounding point when a local grounding surface or grounding bolt is not accessible.
As used herein, the term “wire” and “conductive element” are used interchangeably and refer to any electrically conductive component configured to establish an electrical connection between the spring-type busbar and a grounding point. The wire is not limited to, metallic wires, braided conductive strands, flexible conductive tapes, foil strips, or moulded conductive paths.
As used herein, the term “remote grounding point” refers to a grounding location that is physically separated from the immediate vicinity of the shielded cable or the spring-action busbar assembly. The remote grounding point is electrically connected to the busbar assembly through an extended grounding path, such as a wire or conductive element, and is configured to serve as an alternate grounding site when a direct or local grounding point near the cable is unavailable or impractical to access.
As used herein, the term “local grounding point” refers to a predefined or designated conductive location or surface within close proximity to the shielded cable installation area, which is electrically connected to the vehicle’s chassis ground or system ground. The local grounding point is configured to directly receive and secure the grounding connection from the busbar without the need for an extended conductive path.
As used herein, the term “inward pressure type busbar” refers to a busbar formed from a resilient, pre-deformed sheet metal body configured in a substantially circular or annular shape, such that it exerts a radially inward force when assembled onto a cylindrical object, such as a shielded cable. The inward pressure type busbar is designed to encircle and press against the outer surface of a metallic shield of the cable, thereby ensuring continuous mechanical and electrical contact.
As used herein, the term “outward pressure type busbar” refers to a type of spring-action busbar formed or shaped to exert an outward radial force when positioned around or within a shielding structure, such as the metallic shield of a shielded cable. The outward pressure is generated either by the inherent elastic deformation of the busbar material or by mechanical fastening, such as torque-controlled bolts, causing the busbar to press outwardly against the inner surface of a surrounding conductive component or against the shield from within.
As used herein, the term “rubber seal” refers to a deformable, elastomeric component made of natural rubber, synthetic rubber, or rubber-like material, configured to provide a sealing function between mating surfaces. The rubber seal is adapted to be positioned around or adjacent to the shielded cable and the busbar, such that the rubber seal forms an airtight and/or moisture-resistant barrier. The rubber seal is configured to prevent the ingress of dust, moisture, or other environmental contaminants into the interface region, thereby protecting the electrical connection and ensuring long-term reliability of the grounding assembly.
As used herein, the term “conductive material” refers to any material capable of allowing the flow of electric current with low electrical resistance. The conductive material is used to establish and maintain electrical continuity between components, particularly for grounding purposes. The suitable conductive materials may include, but are not limited to, metals such as copper, aluminum, and steel, and may optionally be surface-treated or plated with materials such as tin, silver, or nickel to enhance conductivity, corrosion resistance, or mechanical durability.
As used herein, the term “terminal” refers to an electrically conductive end component configured to enable secure electrical connection between two or more conductive elements. The terminal may be designed in various forms, such as ring-type, piggyback-type, or barrel-type, and is adapted to facilitate the transmission of electrical current from a busbar, wire, or conductor to a grounding point, electrical device, or other interface.
As used herein, the term “integrated grounding wire” refers to a conductive wire that is permanently or semi-permanently attached to the busbar in a fixed manner during manufacturing or assembly, such that the grounding wire forms a continuous electrical path from the busbar to a grounding point. The integration ensures that the grounding wire does not require separate routing or additional connection steps during installation, thereby reducing assembly complexity and improving reliability of the grounding connection.
Figure 1, in accordance with an embodiment describes a spring-action busbar assembly 100 for grounding a shielded cable 102. The spring-action busbar assembly 100 comprises a spring-type busbar 104, 204 configured to encircle a metallic shield 106 of the shielded cable 102, and adapted to exert a controlled pressure on the metallic shield 106 to ensure electrical contact, a connection means 108 integral to the busbar 104 configured to secure the busbar 104 to a grounding point and an extended grounding path 110 comprising a wire or a conductive element 112 configured to connect the busbar 104 to a remote grounding point when a local grounding point is unavailable. The spring-type busbar 104 is configured to provide a secure and continuous grounding connection.
Figure 2a, describes the spring-type busbar 204 is an inward pressure type busbar formed from a pre-deformed sheet metal body having a circular shape, configured to apply inward pressure on the metallic shield 106. The circular shape and elastic properties of the sheet metal enable the busbar 204 to self-clamp onto the exposed portion of the metallic shield 106 without requiring additional fastening elements or manual crimping. As the busbar 204 may be mounted, the internal restoring force of the pre-formed circular body creates continuous inward pressure on the circumference of the metallic shield 106. Beneficially, the continuous inward pressure ensures the uniform and secure electrical contact across the entire contact surface, thereby facilitating an effective grounding connection that minimizes electromagnetic interference (EMI). The use of this inward pressure configuration simplifies the assembly 100, reduces dependency on tooling or torque-controlled fasteners, and provides consistent grounding performance over time, even under conditions of vibration or thermal cycling. The inward pressure type busbar 104 is particularly advantageous for applications where rapid, repeatable, and tool-free installation of grounding components is desired, contributing to improved manufacturing efficiency and reliability in vehicle electrical architectures.
Figure 2b, describes the spring-type busbar 204 is an outward pressure type busbar configured to apply outward pressure and secured using a bolt with a predefined torque to ensure optimal contact with the metallic shield 106. The outward pressure type busbar 204 may be designed to apply a radially outward force against an inner cylindrical surface of a surrounding enclosure or clamping structure, such as a housing or terminal block, in which the shielded cable 102 may be positioned. The busbar 204 may be formed from a resilient conductive material and is dimensioned such that, when compressed and positioned over the exposed portion of the metallic shield 106 of the shielded cable 102 which tends to expand outwardly to maintain continuous contact with the metallic shield 106. To ensure mechanical stability and consistent electrical contact, the outward pressure type busbar 204 is further secured in place using a bolt or fastening member that is tightened to a predefined torque value. The predefined torque ensures optimal compression of the busbar 204 against the metallic shield 106, thereby enhancing the reliability of the electrical connection while minimizing the risk of over-tightening that could damage the shield or compromise the grounding interface. Beneficially, the combination of outward spring pressure and controlled mechanical fastening provides a robust, vibration-resistant, and low-resistance grounding interface suitable for high-vibration environments such as electric vehicles.
In an embodiment, the connection means 108 comprises a hole configured to accommodate at least one screw for securing the busbar 104 to the grounding point. Specifically, the connection means 108 having the hole formed integrally with the spring-type busbar 104. The hole may be configured to accommodate the at least one screw or equivalent fastening element, such as a bolt, rivet, or threaded insert. The configuration allows the busbar 104 to be securely fixed to the grounding surface, such as the vehicle chassis or grounding lug, by passing the screw through the hole and tightening the screw to the predefined torque. The inclusion of the hole as the structural feature simplifies the grounding assembly process by eliminating the need for additional attachment brackets or connectors. Beneficially, the design ensures the reliable physical and electrical contact between the busbar 104 and the grounding point, thereby maintaining a low-resistance grounding path essential for suppressing electromagnetic interference (EMI).
In an embodiment, the assembly 100 comprises a modified rubber seal configured to provide an airtight seal when the busbar 104 is assembled on the shielded cable 102. The rubber seal may be positioned such that the rubber seal surrounds the interface region between the spring-type busbar 104 and the outer surface of the shielded cable 102. The sealing arrangement may be designed to prevent the ingress of moisture, dust, and other environmental contaminants into the area where the metallic shield 106 may be exposed and contacted by the busbar 104. The rubber seal may be formed from a resilient elastomeric material compatible with automotive-grade thermal and mechanical requirements, such as EPDM or silicone rubber. Beneficially, the airtight sealing feature enhances the long-term reliability of the grounding connection by protecting the exposed metallic shield 106 and busbar interface from corrosion, oxidation, and mechanical wear caused by harsh environmental conditions. Additionally, the seal contributes to vibration damping, reduces potential noise due to loose components, and supports overall system robustness in electric vehicle applications.
In an embodiment, the conductive material of the busbar 104 is tin-plated copper. Furthermore, the conductive material of the busbar 104 is silver-plated or nickel-plated steel. The tin-plated copper may be selected for the excellent electrical conductivity and corrosion resistance properties. The tin plating enhances the surface characteristics of the copper, providing superior oxidation resistance and improved solderability, which is particularly beneficial in ensuring long-term electrical contact stability with the metallic shield of the shielded cable. Subsequently, the spring-type busbar 104 may be formed from silver-plated or nickel-plated steel. The silver plating offers high electrical conductivity and excellent contact performance in high-frequency environments, making the busbar 104 suitable for applications demanding minimal signal loss and efficient EMI suppression. The nickel-plated steel, on the other hand, provides robust mechanical strength along with resistance to wear and corrosion, making the busbar 104 ideal for automotive environments where the assembly may be exposed to mechanical stress, vibration, or harsh environmental conditions.
In an embodiment, the extended grounding path 110 comprises a terminal 114 selected from at least one of: a ring-type terminal, a piggyback-type terminal, or a barrel-type terminal. The extended grounding path 110 provides the flexibility in establishing the grounding connection, particularly in cases where the local grounding point is not readily available. The extended grounding path comprises a wire or conductive element 112 which is electrically connected to the spring-type busbar 104, and terminates in the terminal 114 configured for connection to the remote grounding point. Specifically, the terminal 114 including the ring-type terminal may be suited for secure fastening using bolts or screws to a grounding stud or grounding surface, offering a reliable and low-resistance connection. The piggyback-type terminal allows for stacking or parallel connections, making the terminal 114 advantageous in systems where multiple grounding wires need to be connected to the same point. The barrel-type terminal (also known as a bullet or cylindrical connector) is typically used for quick plug-in-type connections, facilitating ease of assembly and disassembly. The inclusion of the terminal 114 enhances compatibility with various grounding interface standards and simplifies field installation.
In an embodiment, the busbar 104 includes an integrated grounding wire directly attached to the busbar 104 for quicker connection to the grounding point. The integrated grounding wire may be directly attached to the busbar 104 to facilitate a quicker and more efficient connection to the grounding point. Beneficially, the integrated grounding wire eliminates the need for additional steps or components to establish the grounding path 110 after the busbar 104 may be installed. The grounding wire may be spot-welded, crimped, riveted, or otherwise securely joined to the busbar body to maintain low-resistance continuity.
The present disclosure provides the spring-action busbar assembly 100 for grounding the shielded cable 102. The spring-action busbar assembly 100 as disclosed by present disclosure is advantageous over conventional grounding methods in electric vehicles and other high-EMI environments. Firstly, the use of the spring-type busbar 104 whether inward or outward pressure-based ensures the consistent and controlled pressure on the exposed metallic shield 106 which leads to reliable and uniform electrical contact, which is critical for maintaining the continuous grounding and effective electromagnetic interference (EMI) suppression. Beneficially, the integration of the connection means 108 directly on the busbar 104, such as the screw hole or fastener tab, simplifies the mechanical mounting and reduces the installation time while ensuring the robust mechanical and electrical interface with the chassis or grounding point. Furthermore, the inclusion of the extended grounding path 110 featuring the wire or conductive element 112 adds flexibility by enabling grounding even in the absence of a local grounding point, which is particularly beneficial in complex cable routing environments within EV architectures. Furthermore, the material options such as tin-plated copper, silver-plated steel, and nickel-plated steel enhances the conductivity while offering the excellent corrosion resistance which ensures the long-term reliability under harsh automotive conditions. Beneficially, the modified rubber seal provides additional protection by forming an airtight barrier against dust, moisture, and vibration, further improving the durability of the connection. Additionally, the provision for the integrated grounding wire streamlines installation and minimizes errors by pre-assembling critical elements of the grounding circuit. Collectively, the spring-action busbar assembly 100 reduces the manufacturing complexity and assembly time, also improves the safety, durability, and electrical performance.
In an embodiment, the spring-action busbar assembly 100 for grounding the shielded cable 102. The spring-action busbar assembly 100 comprises the spring-type busbar 104 configured to encircle the metallic shield 106 of the shielded cable 102, and adapted to exert the controlled pressure on the metallic shield 106 to ensure electrical contact, the connection means 108 integral to the busbar 104 configured to secure the busbar 104 to the grounding point and the extended grounding path 110 comprising the wire or the conductive element 112 configured to connect the busbar 104 to the remote grounding point when the local grounding point is unavailable. The spring-type busbar 104 is configured to provide the secure and continuous grounding connection. Furthermore, the spring-type busbar 104 is the inward pressure type busbar formed from the pre-deformed sheet metal body having the circular shape, configured to apply inward pressure on the metallic shield 106. Furthermore, the spring-type busbar 104 is the outward pressure type busbar configured to apply outward pressure and secured using the bolt with the predefined torque to ensure optimal contact with the metallic shield 106. Furthermore, the connection means 108 comprises the hole configured to accommodate the at least one screw for securing the busbar 104 to the grounding point. Furthermore, the assembly 100 comprises the modified rubber seal configured to provide the airtight seal when the busbar 104 is assembled on the shielded cable 102. Furthermore, the conductive material of the busbar 104 is tin-plated copper. Furthermore, the conductive material of the busbar 104 is silver-plated or nickel-plated steel. Furthermore, the extended grounding path 110 comprises the terminal 114 selected from the at least one of: the ring-type terminal, the piggyback-type terminal, or the barrel-type terminal. Furthermore, the busbar 104 includes the integrated grounding wire directly attached to the busbar 104 for quicker connection to the grounding point.
Figure 3, describes a method 300 for grounding a shielded cable 102 using a spring-action busbar assembly 100. The method 300 starts at step 302 and completes at step 308. At step 302, the method 300 comprises exposing a metallic shield 106 of the shielded cable 102 at an accessible area. At step 304, the method 300 comprises encircling the exposed metallic shield 106 with a spring-type busbar 104 made of a conductive material selected from the group consisting of tin-plated copper, silver-plated steel, nickel-plated steel, or aluminum, the busbar 104 being configured to exert a controlled pressure on the metallic shield 106. At step 306, the method 300 comprises securing the busbar 104 to the metallic shield 106 using a connection means 108 comprising at least one of a tab, a hole for a fastener, or a terminal. At step 308, the method 300 comprises connecting the busbar 104 to a grounding point, either directly or via an extended grounding path 110 comprising a wire or a conductive element 112, to establish a secure and continuous grounding connection for minimizing electromagnetic interference.
In an embodiment, the step of encircling the metallic shield 106 comprises using an inward pressure type busbar 104, to secure the busbar 104 near an end of the shielded cable 102.
In an embodiment, the step of encircling the metallic shield 106 comprises using an outward pressure type busbar, secured with a bolt at a predefined torque.
In an embodiment, the method 300 further comprising the step of applying a modified rubber seal over the busbar 104 to provide an airtight seal.
In an embodiment, the step of connecting the busbar 104 to a grounding point comprises using a terminal 114 selected from at least one of: a ring-type terminal, a piggyback-type terminal, or a barrel-type terminal.
It would be appreciated that all the explanations and embodiments of the portable device 100 also applies mutatis-mutandis to the method 300.
In the description of the present invention, it is also to be noted that, unless otherwise explicitly specified or limited, the terms “disposed,” “mounted,” and “connected” are to be construed broadly, and may for example be fixedly connected, detachably connected, or integrally connected, either mechanically or electrically. They may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Modifications to embodiments and combination of different embodiments of the present disclosure described in the foregoing are possible without departing from the scope of the present disclosure as defined by the accompanying claims. Expressions such as “including”, “comprising”, “incorporating”, “have”, “is” used to describe and claim the present disclosure are intended to be construed in a non- exclusive manner, namely allowing for items, components or elements not explicitly described also to be present. Reference to the singular is also to be construed to relate to the plural where appropriate.
Although embodiments have been described with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More particularly, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the present disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, alternative uses will also be apparent to those skilled in the art.
,CLAIMS:WE CLAIM:
1. A spring-action busbar assembly (100) for grounding a shielded cable (102), wherein the spring-action busbar assembly (100) comprises:
- a spring-type busbar (104, 204) configured to encircle a metallic shield (106) of the shielded cable (102), and adapted to exert a controlled pressure on the metallic shield (106) to ensure electrical contact;
- a connection means (108) integral to the busbar (104) configured to secure the busbar (104) to a grounding point; and
- an extended grounding path (110) comprising a wire or a conductive element (112) configured to connect the busbar (104) to a remote grounding point when a local grounding point is unavailable,
wherein the spring-type busbar (104) is configured to provide a secure and continuous grounding connection.
2. The spring-action busbar assembly (100) as claimed in claim 1, wherein the spring-type busbar (104) is an inward pressure type busbar formed from a pre-deformed sheet metal body having a circular shape, configured to apply inward pressure on the metallic shield (106).
3. The spring-action busbar assembly (100) as claimed in claim 1, wherein the spring-type busbar (104) is an outward pressure type busbar configured to apply outward pressure and secured using a bolt with a predefined torque to ensure optimal contact with the metallic shield (106).
4. The spring-action busbar assembly (100) as claimed in claim 1, wherein the connection means (108) comprises a hole configured to accommodate at least one screw for securing the busbar (104) to the grounding point.
5. The spring-action busbar assembly (100) as claimed in claim 1, wherein the assembly (100) comprises a modified rubber seal configured to provide an airtight seal when the busbar (104) is assembled on the shielded cable (102).
6. The spring-action busbar assembly (100) as claimed in claim 1, wherein the conductive material of the busbar (104) is tin-plated copper.
7. The spring-action busbar assembly (100) as claimed in claim 1, wherein the conductive material of the busbar (104) is silver-plated or nickel-plated steel.
8. The spring-action busbar assembly (100) as claimed in claim 1, wherein the extended grounding path (110) comprises a terminal (114) selected from at least one of: a ring-type terminal, a piggyback-type terminal, or a barrel-type terminal.
9. The spring-action busbar assembly (100) as claimed in claim 1, wherein the busbar (104) includes an integrated grounding wire directly attached to the busbar (104) for quicker connection to the grounding point.
10. A method (300) for grounding a shielded cable (102) using a spring-action busbar assembly (100), the method (300) comprising:
- exposing a metallic shield (106) of the shielded cable (102) at an accessible area;
- encircling the exposed metallic shield (106) with a spring-type busbar (104) made of a conductive material selected from the group consisting of tin-plated copper, silver-plated steel, nickel-plated steel, or aluminum, the busbar (104) being configured to exert a controlled pressure on the metallic shield (106);
- securing the busbar (104) to the metallic shield (106) using a connection means (108) comprising at least one of a tab, a hole for a fastener, or a terminal; and
- connecting the busbar (104) to a grounding point, either directly or via an extended grounding path (110) comprising a wire or a conductive element (112), to establish a secure and continuous grounding connection for minimizing electromagnetic interference.
11. The method (300) as claimed in claim 10, wherein the step of encircling the metallic shield (106) comprises using an inward pressure type busbar (104), to secure the busbar (104) near an end of the shielded cable (102).
12. The method (300) as claimed in claim 10, wherein the step of encircling the metallic shield (106) comprises using an outward pressure type busbar, secured with a bolt at a predefined torque.
13. The method (300) as claimed in claim 10, further comprising the step of applying a modified rubber seal over the busbar (104) to provide an airtight seal.
14. The method (300) as claimed in claim 10, wherein the step of connecting the busbar (104) to a grounding point comprises using a terminal (114) selected from at least one of: a ring-type terminal, a piggyback-type terminal, or a barrel-type terminal.