WO2024084498A1 - Dispositif de commutation et dispositif de levier comportant ledit dispositif de commutation - Google Patents

Dispositif de commutation et dispositif de levier comportant ledit dispositif de commutation Download PDF

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Publication number
WO2024084498A1
WO2024084498A1 PCT/IN2023/050935 IN2023050935W WO2024084498A1 WO 2024084498 A1 WO2024084498 A1 WO 2024084498A1 IN 2023050935 W IN2023050935 W IN 2023050935W WO 2024084498 A1 WO2024084498 A1 WO 2024084498A1
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WO
WIPO (PCT)
Prior art keywords
plunger
lever
housing
base
switch device
Prior art date
Application number
PCT/IN2023/050935
Other languages
English (en)
Inventor
Yogesh Kumar Gupta
Tarun Ojha
Original Assignee
Hero MotoCorp Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hero MotoCorp Limited filed Critical Hero MotoCorp Limited
Publication of WO2024084498A1 publication Critical patent/WO2024084498A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/38—Plug-and-socket contacts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
    • F16D23/12—Mechanical clutch-actuating mechanisms arranged outside the clutch as such
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/06—Casing of switch constituted by a handle serving a purpose other than the actuation of the switch, e.g. by the handle of a vacuum cleaner
    • H01H2009/068—Casing of switch constituted by a handle serving a purpose other than the actuation of the switch, e.g. by the handle of a vacuum cleaner with switches mounted on a handlebar, e.g. for motorcycles, fork lift trucks, etc.

Definitions

  • TITLE “A SWITCH DEVICE AND A LEVER DEVICE INCLUDING SAID SWITCH DEVICE”
  • the present disclosure in general, relates to the field of instrumentation engineering. Particularly, but not exclusively, the present disclosure relates to switch devices. Further, embodiments of the present disclosure relate to a switch device employed in vehicles for detection of actuation of lever.
  • Most vehicles include levers (also referred to as lever arm and hand levers) configured to facilitate actuation of mechanisms included the vehicle.
  • Vehicles include a variety of mechanisms, such as, but not limited to, clutch actuation mechanism, brake actuation mechanism, hand brake/parking brake actuation mechanism, and door lock mechanisms, that are configured to be operated by levers.
  • the levers employed in actuation of such mechanisms are generally customized to facilitate easy operation of the corresponding mechanism and to suit ergonomic requirements. Further, operation of such lever operated mechanisms depends upon degree of actuation (manipulation) and/or release of the lever by user. Accordingly, by detecting actuation/release of the lever and by measuring degree of actuation/release of the lever, operation of the corresponding mechanism can be determined.
  • most vehicles include a switch and/or a sensor configured to detect operation of the lever, whereby enabling detection of operation of the corresponding mechanism.
  • the clutch is actuated by a clutch lever.
  • the clutch lever arm may be coupled to a handlebar of the vehicle such that the clutch lever arm is configured to be operated by hand of the user.
  • the clutch lever arm may be positioned on the floor of the vehicle and may be configured to be operated by leg of the user. In both conditions described above, it is a natural tendency for the user to rest her hand/fingers and leg on the clutch lever arm. Resting of fingers/hand on the lever arm by the user, during operation of the vehicle, may lead to unintended actuation of the lever arm (although by a minor degree), whereby leading to generation of false signal by the switch.
  • the signal generated by the switch corresponding to actuation/release of the lever arm is transmitted to at least one of an electronic control unit (ECU), an engine management system (EMS), and an On-Board Diagnostic (OBD) system of the vehicle. Accordingly, generation of false signal by the switch (such as, as described in above paragraph), leads to incorrect detection/diagnosis, and may further lead to inappropriate measures/actions by at least one of the ECU, EMS and OBD.
  • ECU electronice control unit
  • EMS engine management system
  • OBD On-Board Diagnostic
  • the present disclosure is directed to overcome one or more limitations stated above or any other limitations associated with the conventional configuration of switches as described above. Further, the present disclosure is directed to overcome one or more limitations of the conventional configuration of switches interfaced with levers adapted to facilitate actuation of mechanisms included the vehicle.
  • a switch device in one non-limiting embodiment of the present disclosure, includes a housing defining a cavity.
  • a plunger is movably received in the cavity, and the plunger includes an elongate section.
  • the device further includes a base coupled to a first end of the housing. The base is configured to support a pair contact strips.
  • the device further includes a first resilient member configured to bias the plunger in a first direction away from the base. Further, a carrier is slidably mounted onto the elongate section of the plunger. The carrier is configured to contact the pair of contact strips in an actuated position of the plunger. The device further includes a second resilient member configured to bias the plunger in an opposite direction relative to the first direction.
  • the plunger includes an engaging section.
  • the first resilient member is configured to engage with the engaging section of the plunger.
  • the second resilient member is disposed in the cavity, between the housing and the carrier.
  • the second resilient member is positioned coaxial with the plunger.
  • the second resilient member is configured to bias the plunger in a second direction opposite to the first direction and towards the base.
  • the carrier is away from the pair of contact strips in a release position, an intermediate position of the plunger.
  • the base is defined with at least one slot. At least a portion of the engaging section of the plunger is configured to reciprocate in the at least one slot, upon actuation of a lever interfaced with the switch device. Further, the base is defined with an annular groove to accommodate at least a portion of the first resilient member. The first resilient member being disposed coaxial to the plunger and the housing.
  • the device includes a collar coupled to the carrier. The collar is configured to contact the pair of contact strips in the actuated position of the plunger.
  • the housing is a hollow circular member defined with a first opening at the first end and a second opening at a second end opposite the first end.
  • the plunger is positioned coaxial relative to a central axis of the housing.
  • the elongate section of the plunger reciprocates through the second opening defined at the second end of the housing.
  • the base is coupled to the first opening defined at the first end of the housing.
  • the first resilient member and the second resilient member is a coil spring positioned at the first end and the second end of the housing.
  • the plunger is configured to reciprocate along the central axis of the housing, through the second opening, relative to actuation and release of a lever interfaced with the plunger.
  • the plunger moves away from the base and towards the base, relative to actuation and release of the lever, respectively.
  • the plunger is positioned closer to the base in the release position of the switch device, before the actuation of the lever. Further, the plunger is configured to be moved to the intermediate position upon actuation of the lever. The plunger is positioned intermediate of the first end and the second end of the housing in the intermediate position. Furthermore, the plunger is configured to be moved to the actuated position closer to the second end of the housing, upon additional actuation of the lever relative to the intermediate position. The carrier is configured to contact the pair of contact strips upon said additional actuation of the lever. [019] In an embodiment, the pair of contact strips extend bidirectionally relative to the base. A first end of the pair of contact strips extends into the cavity towards the first end of the housing. Further, a second end opposite the first end of the pair of contact strips is configured to be coupled to an electric circuit.
  • a lever device for a vehicle includes a lever pivotally coupled to a handlebar of the vehicle and operable between an actuated position and a release position.
  • the lever is operatively connectable to at least one of a brake and a clutch mechanism of the vehicle.
  • a switch device is interfaced with the lever.
  • the switch device (referred to as ‘the device’ hereinafter) includes a housing defining a cavity.
  • a plunger is movably received in the cavity, and the plunger includes an elongate section.
  • the device further includes a base coupled to a first end of the housing. The base is configured to support pair of contact strips.
  • the device further includes a first resilient member configured to bias the plunger in a first direction away from the base.
  • a carrier is slidably mounted onto the elongate section of the plunger. The carrier is configured to contact the pair of contact strips in an actuated position of the plunger.
  • the device further includes a second resilient member disposed in the cavity, between the housing and the carrier. The second resilient member is positioned coaxial with the plunger and is configured to bias the plunger in a second direction opposite to the first direction.
  • the base is defined with at least one slot.
  • the engaging section of the plunger is configured to reciprocate in the at least one slot.
  • the engaging section of the plunger is defined with a pocket. At least a portion of the base reciprocates in the pocket.
  • the plunger is configured to reciprocate along a central axis of the housing, through the second opening, relative to actuation and release of the lever. [024] In an embodiment, the plunger reciprocates in the first direction and the second direction opposite to the first direction, upon actuation and release of the lever.
  • the switch device is configured to generate signal upon reciprocation of the plunger in the first direction and the second direction.
  • FIGS la, lb and 1c illustrate perspective views of a switch device, in accordance with an embodiment of the present disclosure.
  • Figure 2a illustrates an exploded view of the device of Figure 1;
  • Figure 2b illustrates different views of a plunger component of the switch device of the Figure 1 ;
  • Figure 3 illustrates different views of a base component of the switch device of the Figure 1 ;
  • Figure 4 illustrates a different views of a carrier component of the switch device of Figure 1 ;
  • Figure 5 illustrates sectional view of the switch device in its OFF condition
  • Figure 6 illustrates sectional views of the switch device in its intermediate position (borderline/boundary condition of the intermediate position);
  • Figure 7 illustrate sectional views of the switch device in its actuated position [also referred to as ON position];
  • Figure 8 illustrates a lever interfaced with the switch device of the present disclosure.
  • exemplary is used herein to mean “serving as an example, instance, or illustration.” Any embodiment or implementation of the present subject matter described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.
  • Embodiments of the present disclosure disclose a switch device.
  • the switch device (referred to as ‘the device’ hereinafter) includes a housing defining a cavity.
  • a plunger is movably received in the cavity, and the plunger includes an elongate section.
  • the device further includes a base coupled to a first end of the housing. The base is configured to support a pair of contact strips.
  • the device further includes a first resilient member configured to bias the plunger in a first direction away from the base.
  • a carrier is slidably mounted onto the elongate section of the plunger. The carrier is configured to contact the pair of contact strips in an actuated position of the plunger.
  • the device further includes a second resilient member configured to bias the carrier, which in turn biases the plunger in an opposite direction relative to the first direction.
  • the first resilient member and the second resilient member are coil springs.
  • a spring constant (also called as installed force) of the first resilient member is higher than a spring constant of the second resilient member.
  • the term switch device refers to a device configured to make and break connection in an electric circuit.
  • the switch device may include elements such as, but not limited to, terminals for electrical connection.
  • switch device of the present disclosure is described in the context of a clutch lever of a two-wheeler vehicle, such description 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 alternative falling within the scope of the disclosure. Accordingly, it is to be understood by a person skilled in the art that the switch device of the present disclosure may be employed in any other applications, such as, but not limited to, in brake lever pedal or in any other actuators of two-wheelers, three-wheelers, and four wheelers, with similar operational and configurational requirements and that which requires similar switch characteristics.
  • FIGs la, lb and 1c illustrate different views of a switch device (100) (referred to as ‘the device’ hereinafter) in accordance with an exemplary embodiment of the present disclosure.
  • the device (100) includes a housing (1) defining a cavity (2).
  • the cavity (2) may be defined as the space within the housing (1) for accommodating the components of the device (100).
  • the housing (1) is structured to accommodate components of the device (100). In an embodiment, at least a portion of the components may be accommodated in the cavity (2) defined in the housing (1). In an embodiment, entire component may be accommodated within the housing (1). In another embodiment, the components may be coupled to the housing (1) and may extend out of the cavity (2).
  • the housing (1) may be a hollow cylindrical member.
  • the cylindrical member may have a circular profile.
  • the housing (1) may be a hollow cylindrical member structured to define the cavity (2) for accommodating the components of the device (100).
  • alternative geometrical and structural configurations of the housing (1) may be adapted to suit the operational and configurational requirements of the device (100).
  • one end of the housing (1) may be an open end without any cover (lid or cap), the other end opposite the one end may be provisioned with a cover, where such cover may be defined with an aperture.
  • the housing (1) may be defined with one or more fins (24) for providing structural rigidity to the housing (1).
  • the housing (1) may be further defined with one or more pockets (25) and perforation (26) for structural/functional requirements, and for facilitating coupling of the device (100) to an external element/system.
  • the housing (1) may be defined with a pair of pockets (25) on opposite sides of the housing (1) as shown in Figure lb, where such pockets (25) facilitate coupling of a base (6) to the housing (1).
  • the housing (1) may also be defined with a protrusion (27) for enabling coupling of the device (100) to the external element/system.
  • Figure 2a illustrates exploded view of the device (100).
  • Figure 2a provides a horizontal perspective of the exploded view of the device (100).
  • the housing (1) includes a first end (7) and a second end (19) opposite the first end (7).
  • the housing (1) is defined with a first opening (17) at the first end (7).
  • the second end (19) may be provided with a cap/cover [that is integral to the housing (1)] such that a second opening (18), in the form of an aperture or a hole, is defined at the second end (19) of the housing (1).
  • the second opening (18) may be defined at a central portion of the second end (19) of the housing (1).
  • the second opening (18) may be structured to movable receive a plunger (3) (shown in Figure 2a), where such plunger (3) is positioned coaxial relative to a central axis X-X (20) (shown in Figure lb) of the housing (1).
  • Figure 2b illustrates the plunger (3) in accordance with an exemplary embodiment of the present disclosure.
  • the plunger (3) is movably received in the cavity (2).
  • the plunger (3) includes an elongate section (4) and an engaging section (5).
  • the engaging section (5) is entirely accommodated within the housing (1).
  • the elongate section (4) is partially accommodated in the housing (1), with at least a portion of the elongate section (4) extending out of the housing (1).
  • the plunger (3) is configured to reciprocate along the central axis X-X (20) of the housing (1).
  • the plunger (3) reciprocates through the second opening (18), relative to actuation and release of a lever (44) (shown in Figure 8) interfaced with the plunger (3), as illustrated in Figure 8.
  • the elongate section (4) of the plunger (3) reciprocates through the second opening (18) defined at the second end (19) of the housing (1).
  • the lever (44) may be configured to abut with a tip portion (28) (as shown in Figure 1c) of the plunger (3) such that the plunger (3) reciprocates relative to actuation of the lever (44).
  • the engaging section (5) includes a pair of arms (32a and 32b) defined on opposite sides of the engaging section (5).
  • the pair of arms (32a, 32b) may be L-shaped as depicted in the Figure 2b.
  • the pair of arms (32a, 32b) may be I-shaped based on configurational requirements of the plunger (3).
  • the elongate section (4) of the plunger (3) is configured to extend out of the cavity (2) upon actuation/operation of the lever (44) by user.
  • the elongate section (4) of the plunger (3) is configured to retract into the cavity (2), upon release of the lever (44) by the user.
  • the plunger (3) moves away from the base (6) and towards the base (6), upon actuation and release of the lever (44), respectively.
  • the plunger (3) is configured to move away from the base (6), while the elongate section (4) extends out of the cavity (2).
  • the plunger (3) is configured to move towards the base (6), while the elongate section (4) retracts into the cavity (2).
  • Figure 3 illustrates the base (6) in accordance with an exemplary embodiment of the present disclosure.
  • Figure 3 illustrates different views of the base (6).
  • the base (6) includes an upper portion (30) and a lower portion (31).
  • the upper portion (30) of the base is accommodated in the cavity (2) of the housing (1).
  • the base (6) is coupled to housing (1) such that lower portion (31) juts out of the cavity (2) of the housing (1) (as depicted in Figure 1).
  • the base (6) is coupled to the first opening (17) defined at the first end (7) of the housing (1).
  • diameter of the upper portion (30) of the base (6) is lower in comparison with the diameter of the lower portion (31) of the base (6).
  • an external diameter of the lower portion (31) is substantially equal to an external diameter of the housing (1), for enabling flush engagement therebetween.
  • the upper portion (30) of the base (6) is defined with protrusions (29) on opposite faces. The protrusions (29) enable removable coupling of the base (6) to the housing (1). The protrusions (29) engage with the pockets (25) of the housing (1) to facilitate removable coupling of the base (6) to the housing (1).
  • the upper portion (30) of the base (6) may be defined with one or more grooves/slots for movably accommodating at least a portion of the plunger (3) and a first resilient member (9) (as shown in Figure 2a).
  • a top face (33) of the upper portion (30) is defined with the one or more grooves/slots.
  • the base (6) is defined with a slot (15). At least a portion of the engaging section (5) of the plunger (3) is configured to reciprocate in the slot (15).
  • the top face (33) is defined with the slot (15).
  • the slot (15) is defined at a central portion of the top face (33).
  • the shape and profile of the slot (15) is substantially rectangular with semi-circular portions defined at the center.
  • the slot (15) may be configured to have a different shape and profile that is suitable for operational requirements of the device (100).
  • the shape and profile of the slot (15) is configured to match with the external shape and profile of the engaging section (5) of the plunger (3), for movably accommodating the engaging section (5) of the plunger (3). That is, in the embodiment, while the substantially rectangular portions accommodate the pair of L-shaped arms (32a, 32b), the substantially circular portion at the central region accommodates circular shaped portions of the engaging section (5) of the plunger (3).
  • the base (6) is defined with an annular groove (23) to accommodate at least a portion of the first resilient member (9).
  • the first resilient member (9) is a coil spring positioned at the first end (7) of the housing (1) and is disposed in the annular groove (23).
  • the top face (33) is defined with the annular groove (23) that is substantially circular.
  • the annular groove (23) is defined in the base (6).
  • the annular groove (23) may be defined in the top face (33) (as illustrated in the Figure 3), where some portions of the annular groove (23) intersect with the slot (15).
  • the shape and profile of the annular groove (23) is configured to accommodate at least a portion of the first resilient member (9).
  • the shape and profile of the annular groove (23) is configured to match with the external shape and profile of the first resilient member (9), to accommodate at least a portion of the first resilient member (9).
  • the configuration of the slot (15) and the annular groove (23) enables positioning of the first resilient member (9) in an encircling manner around the plunger (3), relative to the central axis X-X of the housing (l)/base (6) [the base (6) is coaxial with the housing (1)].
  • the first resilient member (9) is disposed coaxial to the plunger (3) and the housing (1). That is, in an assembled condition of the device (100), the first resilient member (9) is configured to engage (is in contact) with the engaging section (5) of the plunger (3).
  • the first resilient member (9) configured to bias the carrier, which in turn biases the plunger (3) in a first direction (10) (shown in Figure 5) away from the base (6).
  • a portion of the walls (36a and 36b, collectively referred to as 36), defining and delimiting the slot (15) and the annular groove (23) are configured to slightly extend above the top face (33) of the base (6). Such extending portion of the walls (36) prevents downward motion of a carrier (11), upon the carrier (11) contacting the walls (36) of the base (6), during operation of the device (100).
  • the base (6) is configured to support a pair of contact strips (8a and 8b, collectively referred to as 8).
  • the pair of contact strips (8) is made of a metallic material and is formed integrally with the base (6).
  • the base (6) may be an injection moulded part made of polymeric material.
  • the pair of contact strips (8) may be formed integrally with the base (6), during injection moulding of the base (6).
  • the pair of contact strips (8) extend bidirectionally relative to the base (6).
  • a first end (21) of the pair of contact strips (8) extends into the cavity (2) towards the first end (7) of the housing (1).
  • a second end (22) opposite the first end (21) of the pair of contact strips (8) is configured to function as electrical terminals such that the pair of contact strips (8) can be coupled to an electric circuit.
  • Figure 4 illustrates a carrier (11) in accordance with an embodiment of the present disclosure.
  • Figure 4 illustrates different views of the carrier (11), in accordance with an exemplary embodiment of the present disclosure.
  • the carrier
  • the (11) is a hollow cylindrical member including a first portion (34) and a second portion (35) contiguous with the first portion (34).
  • An external diameter (37) of the first portion (34) is larger than an external diameter (38) of the second portion (35).
  • an internal diameter (39) of the first portion (34) is larger than an internal diameter (40) of the second portion (35).
  • the internal diameter (40) may be substantially equal or slightly larger than an external diameter of the elongate section (4) of the plunger (3), such that the carrier (11) is mountable on to the elongate section (4) of the plunger (3).
  • the carrier (11) is slidably mounted onto the elongate section (4) of the plunger (3).
  • the device (100) further includes a collar (16) (shown in Figure 2a) coupled to the carrier (11).
  • the collar (16) is a hollow cylindrical member and is mounted on to the second portion (35) of the carrier (11).
  • An internal diameter of the collar (16) is substantially equal to the external diameter (38) of the second portion (35) to removably couple the collar (16) to the carrier (11).
  • the carrier (11) along with the collar (16) mounted on to the carrier (11) is configured to contact the pair of contact strips (8), during sliding of the carrier (11) on the elongate section of the plunger (3).
  • the carrier (11) may be made of a non- conductive material such as a polymeric material.
  • the collar (16) may be made of any conductive material such as a metallic material. Accordingly, the collar (16) upon coming in contact with the pair of contact strips (8) [during sliding motion of the carrier (11) along with the collar (16)], completes a circuit.
  • the device (100) further includes a second resilient member (12) (shown in Figure 2a). As can be seen in sectional views depicted in Figure 5, the second resilient member (12) is disposed around the elongate section (4) of the plunger (3). The second resilient member (12) is disposed in the space between the housing (1) and the carrier (11). The second resilient member (12) may be a coil spring positioned at the second end (19) of the housing (1). The second resilient member
  • the second resilient member (12) is positioned coaxial with the plunger (3).
  • the second resilient member (12) is configured to bias the carrier (11), which in turn biases the plunger (3) in a second direction (13) opposite to the first direction (10) and towards the base (6).
  • at least a portion of the second resilient member (12) is housed within the carrier (11), in an expanded condition of the second resilient member (12).
  • the whole of the second resilient member (12) may be accommodated in the carrier (11), in a compressed condition of the second resilient member (12).
  • the second resilient member (12) gets compressed during upward travel of the plunger (3).
  • the carrier (11) will also move down until a certain distance.
  • the engaging section (5) of the plunger (3) disengages from the carrier (11) and moves further down into the slot (15) defined in the base (6).
  • the carrier (11) will pop-up (move up), carrying the collar (16) along with it.
  • the second resilient member (12) is configured to apply downward force on the carrier (11), such that the carrier (11) is held down (without popping up).
  • FIG. 1 Operation of the device (100) is described with reference to Figures 5 to 7 of the present disclosure ( Figures 5, 6 and 7 depict sectional views of the device (100) taken along sections B-B, B-B, and A- A, respectively).
  • a clutch lever (44) also referred to as the lever (44) in the description
  • the lever (44) may be pivotally coupled to a handlebar of the vehicle and may be operable between an actuated position and a release position (also referred to as unactuated position or released position).
  • the lever (44) is operatively connectable to at least one of a brake and a clutch mechanism of the vehicle.
  • Figure 5 illustrates sectional views of the device (100) in its OFF condition (41).
  • Figure 5 depicts sectional views of the device (100) along A-A.
  • OFF condition (41) also referred to as zero position of the lever (44)
  • the clutch lever (44) that is abutting the plunger (3) is in the released position [OFF condition (41)].
  • entire length of the plunger (3) is accommodated in the housing (1) in the OFF condition (41) of the device (100).
  • the OFF condition (41) also referred to as zero position of the lever (44)
  • the engaging section (5) of the plunger (3) is positioned closer to the base (6), and the first portion (34) of the carrier is configured to contact the pair of contact strips. Further, the engaging section (5) of the plunger (3) is configured to be moved to an intermediate position (42) due to free play and/or unintended actuation of the lever (44), by the user. In the intermediate position (42), point of contact between the first portion (34) of the carrier (11) and the pair of contact strips (8) could be at any point between the positions depicted in the Figures 5 and 6. In the intermediate position
  • the engaging section (5) of the plunger (3) is positioned intermediate (slightly away from the base) of the first end (7) and the second end (19) of the housing (1), and the first portion (34) of carrier (1) is configured to remain in contact with the pair of contact strips (8).
  • point of contact between the first portion (34) of the carrier (11) and the pair of contact strips (8) could be at any point between the positions as shown in Figures 5 and Figure 6.
  • Figure 6 depicts the borderline/boundary condition of intermediate position (42).
  • the engaging section (5) of the plunger (3) is configured to be moved to the actuated position (43) (shown in Figure 7) [also referred to as the ON condition or the fully actuated position] closer to the second end (19) of the housing (1), upon additional actuation of the lever (44) relative to the intermediate position (42).
  • the collar (16) mounted upon the carrier (11) is configured to contact the pair of contact strips (8) upon said additional actuation of the clutch lever (44).
  • Figure 6 illustrates sectional view of the device (100) in the intermediate position (42) [that is, in borderline/boundary condition of the intermediate position (42)].
  • Figure 6 depicts sectional views of the device (100) in the intermediate position (42) [(that is, in borderline/boundary condition of the intermediate position (42)], along B-B.
  • Such partial actuation of the device (100) may happen in the following situations. There may exist some free play of the lever (44) arm to loosening of clutch cable (slack), resulting in actuation of lever (44) by a minimum degree. Also, the user may have a tendency to rest her hand/fingers on the clutch lever (44), which may result in unintended actuation of the clutch lever (44), during riding of the vehicle.
  • the pair of contact strips (8) is configured to contact only with the first portion (34) (i.e., which is non-conductive) of the carrier (11).
  • the length of the first portion (34) of the carrier (11) may be configured such that the pair of contact strips (8) only contact/slide along the first portion (34) of the carrier (11), during travel of the plunger from the OFF condition (41) to the intermediate position (42).
  • the first portion (34) of the carrier (11) is made of non-conductive polymeric material, there is no completion of circuit. Accordingly, there is no generation of signal (relating to actuation of lever (44)) by the device (100), during such partial actuation.
  • the length of the first portion (34) of the carrier (11) may be configured to sufficiently accommodate the free play and the unintended actuation of the lever (44).
  • travel of the plunger from OFF condition (41) to the intermediate position (42) accommodates free play and/or unintended actuation of the clutch lever (44).
  • the first portion (34) of the carrier (11) may be configured to have a length suitable for above-described operational stroke length (travel of plunger in upward and downward directions).
  • Figure 7 illustrates sectional views of the device (100) in fully actuated position, which is the ON condition (43) of the lever (44).
  • Figure 7 depicts sectional views of the device (100) in fully actuated position, along A-A. Travel of the plunger beyond intermediate position (42) [specifically, beyond the borderline/boundary condition of the intermediate position (42)], will result in contact between the collar (16) and the pair of contact strips (8). Accordingly, the collar (16) upon coming in contact with the pair of contact strips (8) [during sliding motion of the carrier (11) along with the collar (16)], completes a circuit.
  • the collar (16) may have a suitable length to facilitate travel of the plunger (3), to result in contact between the collar (16) and the pair of contact strips (8).
  • the current flows through the pair of contact strips (8), the metallic collar (16) and back to the source, upon completion of the circuit.
  • a signal is generated by the device (100).
  • the signal generated by the device (100) corresponds to actuation of the lever (44), beyond the zone of free play and unintended actuation of lever (44) by user.
  • the configuration of the device (100) ensures that a signal is generated only upon intentional actuation of the lever (44) by the user, and not in the zone of free play and unintended actuation of the lever by user.
  • the engaging section (5) of the plunger (3) may be defined with a pocket.
  • at least a portion of the base (6) may be configured to reciprocate in the pocket, corresponding to reciprocation of the lever (44) interfaced with the plunger (3).
  • the configuration of the device (100) as described above results in an increase in stroke length (in comparison with a conventional configuration of the device (100)) of the plunger (3) of the device (100) (i.e., increase in OFF range of the switch device), without increase in size of the switch device (100).
  • the aspect of slidably mounting the carrier (11) on the plunger (3), and the plunger (3) structured to reciprocate in the slot (15) defined in the base (6) results in an increase in stroke length of the plunger (3), without increase in size of the device (100).
  • compensating/accommodating the increase in free play of the lever (44) is easier [(because of corresponding increase in OFF range of the device (100)].
  • the device (100) is maintained in compact size, addressing the space constraints associated therewith.
  • the configuration of the device (100) as described above prevents incorrect/erroneous detection of actuation of a brake lever or a clutch lever (44) of the vehicle (with which the device (100) is interfaced), that may be caused either by means of free play or by means of unintended actuation of the brake lever or the clutch lever (44).

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Abstract

La présente divulgation divulgue un dispositif de commutation (100). Le dispositif (100) comporte un boîtier (1) définissant une cavité (2). Un piston (3) est reçu de façon mobile dans la cavité (2), et le piston (3) comporte une section allongée (4). Le dispositif comporte en outre une base (6) accouplée à une première extrémité (7) du boîtier (1). La base est configurée pour supporter une paire de bandes de contact (8). Le dispositif comporte en outre un premier élément élastique (9) configuré pour solliciter le piston dans une première direction (10) à l'opposé de la base. En outre, un support (11) est monté coulissant sur la section allongée du piston. Le support est configuré pour entrer en contact avec la paire de bandes de contact dans une position actionnée (43) du piston. Le dispositif (100) comporte en outre un second élément élastique (12) configuré pour solliciter le piston (3) dans une direction opposée par rapport à la première direction (10).
PCT/IN2023/050935 2022-10-17 2023-10-13 Dispositif de commutation et dispositif de levier comportant ledit dispositif de commutation WO2024084498A1 (fr)

Applications Claiming Priority (2)

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IN202211059140 2022-10-17
IN202211059140 2022-10-17

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100234178A1 (en) * 2009-03-16 2010-09-16 Honda Motor Co., Ltd. Electronic clutch control apparatus for vehicle
EP3819742A1 (fr) * 2018-08-10 2021-05-12 Honda Motor Co., Ltd. Système d'embrayage électronique

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100234178A1 (en) * 2009-03-16 2010-09-16 Honda Motor Co., Ltd. Electronic clutch control apparatus for vehicle
EP3819742A1 (fr) * 2018-08-10 2021-05-12 Honda Motor Co., Ltd. Système d'embrayage électronique

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
THE MOTORCYCLE BOSS: "Motorcycle Clutch Switch Replacement", 12 September 2017 (2017-09-12), XP093164885, Retrieved from the Internet <URL:https://www.youtube.com/watch?v=y6En4krZr38> *

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