WO2023175633A1 - A contact assembly for a blinker module with center push contact for a vehicle - Google Patents

A contact assembly for a blinker module with center push contact for a vehicle Download PDF

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Publication number
WO2023175633A1
WO2023175633A1 PCT/IN2023/050257 IN2023050257W WO2023175633A1 WO 2023175633 A1 WO2023175633 A1 WO 2023175633A1 IN 2023050257 W IN2023050257 W IN 2023050257W WO 2023175633 A1 WO2023175633 A1 WO 2023175633A1
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WO
WIPO (PCT)
Prior art keywords
plunger
contact
pair
fixed contacts
movable contact
Prior art date
Application number
PCT/IN2023/050257
Other languages
French (fr)
Inventor
Ravinder Mehla
Rishi Kumar GOYAL
Nitin Kumar Singh
Nishant Agarwal
Original Assignee
Uno Minda 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 Uno Minda Limited filed Critical Uno Minda Limited
Publication of WO2023175633A1 publication Critical patent/WO2023175633A1/en

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00Contacts
    • H01H1/12Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36Contacts characterised by the manner in which co-operating contacts engage by sliding

Definitions

  • the present disclosure generally relates to a field of automobiles. Particularly, the present disclosure relates to a blinker module with a center push contact for a vehicle. Further, embodiments of the present disclosure disclose a construction and mechanism of a contact assembly of the blinker module for the vehicle.
  • a conventional blinker module comprises a contact mechanism having a pair of fixed contacts (305) and a movable contact (307), and an actuator (301) of center push type button (as shown in Fig. 1A and IB).
  • the actuator (301) is configured to displace the movable contact (307) to connect with the pair of fixed contacts (305) to complete the circuit.
  • the actuator (301) is pushed to turn off the blinkers which are in operation to reset the blinker module (300) i.e., to turn off the left or right indicators.
  • the fixed contacts (305) are mounted horizontally (as shown in Fig. IB) and fixed on a base (306) such that the movable contact (307) slides over the fixed contacts (305) for completing the circuit.
  • This continuous and repeated connection between the contacts results in track formation which causes insulation resistance/contact burning failure in the fixed contacts (305). Consequently, this leads to leakage of current which makes the blinker module un-suitable for low ampere switching application.
  • the existing fixed contacts (305) are operated by a spring-loaded contact mechanism which may lead to more wear & tear of the fixed contacts and movable contact (305, 307). Also, there is no feedback for the user upon actuation of the center push button. [004]
  • the present disclosure is directed to overcome one or more limitations stated above or other such limitations associated with the prior art.
  • a contact assembly for a blinker module comprises a body defined with an opening about a central axis.
  • a pair of fixed contacts are mounted to the body and each fixed contact of the pair of fixed contacts are positioned opposite to each other along the central axis.
  • a plunger is movably disposed in the opening.
  • the plunger is defined with an elongated shaft at one end and a flange at an other end opposite to the one end.
  • the plunger is selectively actuated to displace between a first position and a second position.
  • a movable contact is mounted to the plunger.
  • the movable contact is defined with a provision receivable by the elongated shaft. The movable contact is positioned away from the pair of fixed contacts in the first position of the plunger and the movable contact engages with the pair of fixed contacts upon movement of the plunger in the second position.
  • the plunger is defined with a sleeve provided on the elongated shaft to support the movable contact.
  • the contact assembly comprises at least one resilient member disposed along the elongated shaft and interposed between the body and the sleeve to bias the plunger.
  • each of the pair of one fixed contact is a leaf type strip with a connecting portion attached to the body and a contact portion extending away from the body.
  • the plunger is defined with a handle connected to the flange which is actuatable by an actuator to displace the plunger from the first position to the second position.
  • the pair of fixed contacts resemble a plurality of terminals of at least one circuit.
  • the movable contact breaks the at least one circuit in the second position and the movable contact bridges the at least one circuit in the first position.
  • the pair of fixed contacts are manufactured of beryllium copper.
  • a blinker module for a vehicle.
  • the blinker module comprises a housing and a contact assembly disposed within a portion of the housing from one end of the housing.
  • the contact assembly comprises a body defined with an opening about a central axis.
  • a pair of fixed contacts are mounted to the body, such that each fixed contact of the pair of fixed contacts are positioned opposite to each other along the central axis.
  • a plunger is movably disposed in the opening.
  • the plunger is defined with an elongated shaft at one end and a flange at an other end opposite to the one end. The plunger is selectively actuated to displace between a first position to a second position.
  • a movable contact is mounted to the plunger and the movable contact is defined with a provision receivable by the elongated shaft.
  • a knob assembly is coupled to the plunger, extending from the housing.
  • the knob assembly comprises a knob configured to selectively actuate the plunger.
  • a lever connected to the knob at one end and the lever is defined with a fork at an other end.
  • An actuator is receivable within the fork, such that the actuator is configured to displace the plunger between the first position and the second position upon actuation of the knob in the central axis.
  • the movable contact is positioned away from the pair of fixed contacts in the first position of the plunger and the movable contact engages with the pair of fixed contacts upon movement of the plunger in the second position.
  • a lever support is defined with a protrusion at one end, wherein the lever support is disposed within the housing and configured to support the actuator and the fork.
  • the actuator and the fork are defined with a provision to receive the protrusion of the lever support to support the actuator and the fork.
  • the fork comprises a pair of teeth extending from the provision to an other end of the fork. Further, a second slot is defined between the pair of teeth to receive a cam portion.
  • the cam portion defined with a projection extending perpendicular to the central axis.
  • the projection is configured to abut a handle of the plunger of the contact assembly to displace the plunger to the second position.
  • Figs. 1A and IB illustrates a front perspective views of a conventional blinker module (prior arts).
  • Fig. 2 illustrates an exploded perspective view of a contact assembly of a blinker module for a vehicle, in accordance with an embodiment of the present disclosure.
  • Fig. 3 illustrates an exploded perspective view of the blinker module for the vehicle, in accordance with an embodiment of the present disclosure.
  • Fig. 4a illustrates a top view of the blinker module depicting OFF condition in accordance with an embodiment of the present disclosure.
  • Fig. 4b illustrates a sectional view of the contact assembly of the blinker module depicting OFF condition of Fig 4b, in accordance with an embodiment of the present disclosure
  • Fig. 5a illustrates a top view of the blinker module depicting ON condition, in accordance with an embodiment of the present disclosure
  • Fig. 5b illustrates a sectional view of the contact assembly of the blinker module depicting ON condition, of Fig 5a in accordance with an embodiment of the present disclosure.
  • Fig. 2 to Fig. 3 are exemplary embodiments of the present disclosure illustrating a blinker module (200) and a contact assembly (100) [interchangeably referred to as “the assembly (100)”] of the blinker module (200) for a vehicle.
  • the contact assembly (100) comprises a body (104) defined with an opening (114) at one end about a central axis (A- A).
  • the body (104) is defined with a slot (112) at either ends of the body (104) to receive a pair of fixed contacts (105).
  • the pair of fixed contacts (105) are disposed within the slot (112) of the body (104).
  • the pair of fixed contacts (105) are fixed to an other end of the body (104) opposite to the one end.
  • Each fixed contact (105) of the pair of fixed contacts (105) are positioned opposite to each other along the central axis (A-A).
  • the pair of fixed contacts (105) may be insert molded directly to the body (104).
  • Each of the pair of fixed contacts (105) is a leaf type strip are defined with a connecting portion (120) attached to the other end of the body (104) and a contact portion (122) opposite to the connecting portion (120). The contact portion (122) extends beyond the opening (114).
  • the contact portion (122) of the pair of fixed contacts (105) is curved outward with respect to the body (104).
  • the pair of fixed contacts (105) resemble a plurality of terminals of at least one circuit.
  • the pair of fixed contacts (105) are manufactured of beryllium copper.
  • a resilient member (106) is disposed within the opening (114) of the body (104).
  • the pair of fixed contacts (105) are electrically connected to an electromechanical relay circuit (not shown in Figs.) of the vehicle which operates blinkers or blinker switches.
  • a plunger (109) is movably disposed in the opening (114).
  • the plunger (109) is defined with an elongated shaft (109a) at one end and a flange (109b) at an other end opposite to the one end.
  • a sleeve (116) is defined on the elongated shaft (109a) at a distance from the flange (109b) to accommodate a movable contact (107) between the sleeve (116) and the flange (109b) (as shown in Fig. 2).
  • the movable contact (107) is defined with a provision (107a) receivable by the elongated shaft (109a).
  • the provision (107a) is hole capable of receiving the elongated shaft (109a).
  • a handle (118) is connected to and extends away from the flange (109b).
  • the plunger (109) is selectively actuated to displace between a first position and a second position upon applying a force on the handle (118).
  • the first position and the second position are defined along the central axis (A-A).
  • the elongated shaft (109a) is located within a portion of the opening (114) when the plunger (109) is in the first position.
  • the movable contact (107) abuts with the contact portion (122) of the pair of fixed contacts (105) when the plunger (109) is displaced to the second position.
  • the resilient member (106) is disposed along the elongated shaft (109a) and interposed between the body (104) and the sleeve (116) to bias the plunger (109).
  • the movable contact (107) is biased away from the contact portion (122) by the resilient member (106) upon releasing the force on the handle (118) such that the plunger (109) returns to the first position.
  • the movable contact (107) breaks the at least one circuit in the second position and the movable contact (107) bridges the at least one circuit in the first position.
  • the plunger (109) is actuated by an actuator (232) which is coupled to a knob assembly (201).
  • the blinker module (200) comprises a housing (203) defined with a hollow elongated body having a first end (203a) and a second end (203b).
  • the housing (203) is defined with a top cover (208a) and sidewalls (208b) extending from either ends of the top cover (208a).
  • a bottom cover (228) is connected to each sidewall (208b) to form an enclosure to support all components of the blinker module (200).
  • a provision (203c) is defined at the first end (203a) of the housing (203) to receive the contact assembly (100).
  • the provision (203c) is defined in a cylindrical shape and however such structure cannot be construed as a limitation and the provision (203c) may be structure in any suitable shape such as square rectangle etc.
  • the blinker module further comprises an actuator (232) that is defined with a provision (233) at its central portion (as shown in fig. 3).
  • a groove (233a) extends around the provision (233) and a cam portion (235) is configured to extend from the groove (233a).
  • the cam portion (235) is configured to abut a portion of the handle (118) of the contact assembly (100) to displace the plunger (109) to the second position.
  • the cam portion (235) includes a projection extending perpendicular to the central axis (A-A).
  • a lever support (225) is disposed within the housing (203) along with the actuator (232). The lever support (225) is configured to support the actuator (232).
  • the lever support (225) is defined with a protrusion (236) at one end and a slotted groove (237) at another end.
  • the protrusion (236) is receivable within the provision (233) of the actuator (232) to support the actuator (232) on the lever support (225).
  • the protrusion (236) may be spring loaded with a metal ball underneath the spring (not shown in Figs.).
  • the lever support (225) is configured to support a knob assembly (201).
  • the knob assembly (201) comprises a knob (201a) at one end and a fork (234) at an other end.
  • the knob (201a) is defined with a base portion (201b) and an actuating portion (201c).
  • a lever (202) is connected to the base portion (201b) of the knob (201a) and the fork (234).
  • the knob (201a) is fixed to the lever (202) by means of a spring washer and a screw (not shown in Figs.).
  • the lever (202) is defined with an arcuate portion (202a) extending downward from the knob (201a) to position the fork (234) within the housing (203) such that a portion of the lever (202) and the knob (201a) are disposed outside the housing (203).
  • the fork (234) is connected to the arcuate portion (202a) and is defined with a provision (233) at one end to receive the protrusion (236) of the lever support (225).
  • the fork (234) is disposed between the actuator (232) and the lever support (225).
  • the fork (234) comprises a pair of tooth (234a) extending from the provision (233) to an other end of the fork (234) and a second slot is defined between the pair of tooth (234a). The second slot is configured to receive the cam portion (235).
  • the fork (234) is pivotally mounted on the lever support (225) such that the knob assembly (201) is pivotable about the protrusion (236) of the lever support (225).
  • the knob (201a) is actuated radially in a left or a right direction to activate the blinker module (200).
  • the blinker module (200) provides a first input signal to the electromechanical relay circuit (not shown in Figs.) in response to the actuation of the knob (201a) in the left or the right direction. Accordingly, the electromechanical relay circuit enables a left or right blinkers of the vehicle (not shown in Figs.) to emit light (i.e., ON condition) depending on the direction in which the knob (201a) is actuated by a rider.
  • the knob (201a) is also actuated linearly along the axis (A- A) to operate the actuator (232) to displace the plunger (109) to bridge a contact between the pair of fixed contacts (105) and the movable contact (107).
  • the blinker module (200) provides a second input signal to the electromechanical relay circuit in response to the linear actuation of the knob (201a) along the axis (A- A).
  • the electromechanical relay circuit disables the operation of the left or right blinkers to turn-off light (i.e., OFF condition).
  • the blinker module (200) further comprises a carrier (226) movably disposed within the housing (203) at the second end.
  • the carrier (226) encases a strip comprising a pair of moving contacts (229).
  • the pair of moving contacts (229) are biased by a resilient member (206) disposed between the carrier (226) and the pair of moving contacts (229).
  • the carrier (226) is in contact with the fork (234) such that the carrier (226) is displaced by an outer surface of a tooth of the pair of tooth (234a) upon actuation of the knob (201a).
  • the carrier (226) returns to its original position when the knob (201a) reaches its home position.
  • a base (230) is disposed within the housing (203) at a fixed location with respect to the pair of moving contacts (229) of the carrier (226).
  • the base (230) is mounted with one or more rivets which is also referred to as fixed contacts (231) that makes/breaks contact with the pair of moving contacts (229).
  • fixed contacts (231) that makes/breaks contact with the pair of moving contacts (229).
  • the knob (201a) is pressed linearly to break the contact between the pair of fixed contacts (231) and the moving contact (229).
  • the power supply is restricted and the blinker module (200) will be in OFF condition.
  • the carrier (226) is also returns to the center position by means upon linear actuation of the knob (201a).
  • the knob (201a) is at the center position, the moving contact (229) in the carrier (226) does not overlap with any of the fixed contacts (231), thus indicating that the blinker module (200) is at OFF condition.
  • the bottom cover (228) is disposed beneath the housing (203) to enclose the knob assembly (201) within the housing (203).
  • the bottom cover (228) is configured to support the knob assembly (201) within the housing (203).
  • the bottom cover (228) is defined with a plurality of protrusions which are configured to engage with a plurality of slots (240) defined on the sidewalls (208b) such that the bottom cover (228) is snap fitted to the housing (203).
  • the bottom cover (228) is defined with a groove (228a) at a central portion of the bottom cover (228) to receive the metal ball of the spring loaded protrusion.
  • the metal ball slides within the groove (228a) to provide a haptic feedback upon actuation of the knob assembly (201) along the central axis (A- A).
  • the bottom cover (228) is defined with holes (not shown in Figs.) to drain water and dust particles entering into the blinker module (300).
  • FIG. 4a An operative configuration of the blinker module (200) is now explained with reference to Figs. 4a, 4b and 5a, 5b.
  • the blinker module (200) is in OFF condition and the knob is in unpressed condition.
  • the electromechanical relay circuit is operational and the knob (201a) can be operated radially in left and right directions.
  • the carrier (226) is displaced by the fork (234) such that the pair of moving contacts (229) on the carrier (226) make the contact with the corresponding fixed contacts (231) provided on the base (230). This enables the current flow through the relay circuit and activates the left blinker to emit light.
  • the carrier (226) is displaced in opposite direction and the moving contacts (229) make the contact with the corresponding fixed contacts (231) on the base (230). This enables the current flow to activate the corresponding blinker i.e. right blinker to emit light.
  • the plunger (109) remains in the first position and the movable contact (107) is disposed away from the handle (118) of the plunger (109) (as shown Fig. 4b).
  • the knob (201a) is actuated linearly in the central axis (A- A).
  • the knob assembly (201) operates the actuator (232) such that the cam portion (235) displaces the plunger (109) from the first position to the second position.
  • the movable contact (107) which is disposed on the plunger (109) makes the contact with the pair of fixed contacts (105).
  • the second input signal is transmitted to the electromechanical relay circuit and the current flow is restricted to the blinkers.
  • the knob (201a) is held in place by a detent mechanism (not shown in Figs.) provided within the housing (203).
  • the detent mechanism Upon actuation of the knob (201a) once again, the detent mechanism is released and the plunger (109) is displaced to the first position by the resilient member (106). This breaks the contacts between the movable contact (107) and the pair of fixed contacts (105), thereby making the relay circuit operational and to use the blinkers for indication.
  • the body (104) of the contact assembly (100) is manufactured of a thermosetting material such as thermoplastics, polyurethane and the like.
  • the movable contact (107) of the contact assembly (100) slides over the pair of fixed contacts (105) makes contact to eliminate oxidation or corrosion on the movable and the pair fixed contacts (107, 105).
  • the pair of fixed contacts (105) of the contact assembly (100) are positioned along the central axis (A-A) vertically to generate required contact pressure upon contact with the movable contact (107).
  • the contact assembly (100) of the present disclosure is easy to install on the blinker module (200) due to its compactness with less number of components.
  • the blinker module (200) of the present disclosure with the contact assembly (200) having vertical placement of fixed contacts (105) eliminates the chances of track formation, wear and tear which causes insulation resistance failure. This makes the blinker module (200) suitable for low ampere applications. Advantageously, this reduces cost of manufacture and maintenance costs of the blinker module (200).

Abstract

Present disclosure relates to a contact assembly (100) of a blinker module (200) for a vehicle. The assembly (100) comprises a body (104) defined with an opening (114) about a central axis (A-A). A pair of fixed contacts (105) are mounted to the body and are positioned opposite to each other. A plunger (109) having an elongated shaft (109a) at one end and a flange (109b) at an other end is movably disposed in the opening. The plunger is selectively actuated to displace between a first position and a second position. A movable contact (107) is mounted on the plunger. The movable contact is positioned away from the fixed contacts in the first position of the plunger and the movable contact engages with the fixed contacts upon movement of the plunger in the second position. The contact assembly reduces track formation and prevents insulation resistance failure of fixed contacts.

Description

“A CONTACT ASSEMBLY FOR A BLINKER MODULE WITH CENTER PUSH CONTACT FOR A VEHICLE” TECHNICAL FIELD
[001] The present disclosure generally relates to a field of automobiles. Particularly, the present disclosure relates to a blinker module with a center push contact for a vehicle. Further, embodiments of the present disclosure disclose a construction and mechanism of a contact assembly of the blinker module for the vehicle.
BACKGROUND OF THE DISCLOSURE
[002] Typically, vehicles such as, but not limited to two wheelers or cars are equipped with one or more blinker modules or switches configured for giving indication to other riders and several other purposes. The blinker modules are connected to a plurality of blinkers which are configured to perform the indication function. The blinker module activates the plurality of blinkers by making and breaking contact for actuation and deactivation of components of the vehicle, which may include left and right indicators positioned at a front and/or rear end of the vehicles. A conventional blinker module (300) comprises a contact mechanism having a pair of fixed contacts (305) and a movable contact (307), and an actuator (301) of center push type button (as shown in Fig. 1A and IB). The actuator (301) is configured to displace the movable contact (307) to connect with the pair of fixed contacts (305) to complete the circuit. The actuator (301) is pushed to turn off the blinkers which are in operation to reset the blinker module (300) i.e., to turn off the left or right indicators.
[003] However, the fixed contacts (305) are mounted horizontally (as shown in Fig. IB) and fixed on a base (306) such that the movable contact (307) slides over the fixed contacts (305) for completing the circuit. This continuous and repeated connection between the contacts results in track formation which causes insulation resistance/contact burning failure in the fixed contacts (305). Consequently, this leads to leakage of current which makes the blinker module un-suitable for low ampere switching application. Further, the existing fixed contacts (305) are operated by a spring-loaded contact mechanism which may lead to more wear & tear of the fixed contacts and movable contact (305, 307). Also, there is no feedback for the user upon actuation of the center push button. [004] The present disclosure is directed to overcome one or more limitations stated above or other such limitations associated with the prior art.
SUMMARY OF THE DISCLOSURE
[005] One or more shortcomings of conventional systems are overcome, and additional advantages are provided through a device or a module and a system as claimed in the present disclosure. Additional features and advantages are realized through the techniques of the present disclosure. Other embodiments and aspects of the disclosure are described in detail herein and are considered as a part of the claimed disclosure.
[006] In one non-limiting embodiment of the disclosure, a contact assembly for a blinker module is disclosed. The contact assembly comprises a body defined with an opening about a central axis. A pair of fixed contacts are mounted to the body and each fixed contact of the pair of fixed contacts are positioned opposite to each other along the central axis. Further, a plunger is movably disposed in the opening. The plunger is defined with an elongated shaft at one end and a flange at an other end opposite to the one end. The plunger is selectively actuated to displace between a first position and a second position. A movable contact is mounted to the plunger. The movable contact is defined with a provision receivable by the elongated shaft. The movable contact is positioned away from the pair of fixed contacts in the first position of the plunger and the movable contact engages with the pair of fixed contacts upon movement of the plunger in the second position.
[007] In an embodiment of the disclosure, the plunger is defined with a sleeve provided on the elongated shaft to support the movable contact.
[008] In an embodiment of the disclosure, the contact assembly comprises at least one resilient member disposed along the elongated shaft and interposed between the body and the sleeve to bias the plunger.
[009] In an embodiment of the disclosure, each of the pair of one fixed contact is a leaf type strip with a connecting portion attached to the body and a contact portion extending away from the body. [010] In an embodiment of the disclosure, the plunger is defined with a handle connected to the flange which is actuatable by an actuator to displace the plunger from the first position to the second position.
[Oil] In an embodiment of the disclosure, the pair of fixed contacts resemble a plurality of terminals of at least one circuit.
[012] In an embodiment of the disclosure, the movable contact breaks the at least one circuit in the second position and the movable contact bridges the at least one circuit in the first position.
[013] In an embodiment of the disclosure, the pair of fixed contacts are manufactured of beryllium copper.
[014] In another non-limiting embodiment of the disclosure, a blinker module for a vehicle is disclosed. The blinker module comprises a housing and a contact assembly disposed within a portion of the housing from one end of the housing. The contact assembly comprises a body defined with an opening about a central axis. A pair of fixed contacts are mounted to the body, such that each fixed contact of the pair of fixed contacts are positioned opposite to each other along the central axis. A plunger is movably disposed in the opening. The plunger is defined with an elongated shaft at one end and a flange at an other end opposite to the one end. The plunger is selectively actuated to displace between a first position to a second position. A movable contact is mounted to the plunger and the movable contact is defined with a provision receivable by the elongated shaft. Further, a knob assembly is coupled to the plunger, extending from the housing. The knob assembly comprises a knob configured to selectively actuate the plunger. A lever connected to the knob at one end and the lever is defined with a fork at an other end. An actuator is receivable within the fork, such that the actuator is configured to displace the plunger between the first position and the second position upon actuation of the knob in the central axis. The movable contact is positioned away from the pair of fixed contacts in the first position of the plunger and the movable contact engages with the pair of fixed contacts upon movement of the plunger in the second position.
[015] In an embodiment of the disclosure, a lever support is defined with a protrusion at one end, wherein the lever support is disposed within the housing and configured to support the actuator and the fork. [016] In an embodiment of the disclosure, the actuator and the fork are defined with a provision to receive the protrusion of the lever support to support the actuator and the fork.
[017] In an embodiment of the disclosure, the fork comprises a pair of teeth extending from the provision to an other end of the fork. Further, a second slot is defined between the pair of teeth to receive a cam portion.
[018] In an embodiment of the disclosure, the cam portion defined with a projection extending perpendicular to the central axis. The projection is configured to abut a handle of the plunger of the contact assembly to displace the plunger to the second position.
[019] It is to be understood that the aspects and embodiments of the disclosure described above may be used in any combination with each other. Several of the aspects and embodiments may be combined together to form a further embodiment of the disclosure.
[020] The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent by reference to the drawings and the following detailed description.
BRIEF DESCRIPTION OF ACCOMPANYING DRAWINGS
[021] The novel features and characteristic of the disclosure are set forth in the appended claims. The disclosure itself, however, as well as a mode of use, further objectives and advantages thereof, will best be understood by reference to the following detailed description of an embodiment when read in conjunction with the accompanying drawings. One or more embodiments are now described, by way of example only, with reference to the accompanying drawings wherein like reference numerals represent like elements and in which:
Figs. 1A and IB illustrates a front perspective views of a conventional blinker module (prior arts).
Fig. 2 illustrates an exploded perspective view of a contact assembly of a blinker module for a vehicle, in accordance with an embodiment of the present disclosure.
Fig. 3 illustrates an exploded perspective view of the blinker module for the vehicle, in accordance with an embodiment of the present disclosure. Fig. 4a illustrates a top view of the blinker module depicting OFF condition in accordance with an embodiment of the present disclosure.
Fig. 4b illustrates a sectional view of the contact assembly of the blinker module depicting OFF condition of Fig 4b, in accordance with an embodiment of the present disclosure
Fig. 5a illustrates a top view of the blinker module depicting ON condition, in accordance with an embodiment of the present disclosure; and
Fig. 5b illustrates a sectional view of the contact assembly of the blinker module depicting ON condition, of Fig 5a in accordance with an embodiment of the present disclosure.
[022] The figures depict embodiments of the disclosure for purposes of illustration only. One skilled in the art will readily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.
DETAILED DESCRIPTION
[023] While the embodiments in the disclosure are subject to various modifications and alternative forms, specific embodiments thereof have been shown by way of example in the figure and will be described 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 alternative falling within the scope of the disclosure.
[024] It is to be noted that a person skilled in the art would be motivated from the present disclosure and modify various features of a device, a system and a method without departing from the scope of the disclosure. Therefore, such modifications are considered to be part of the disclosure. Accordingly, the drawings show only those specific details that are pertinent to understand the embodiments of the present disclosure, so as not to obscure the disclosure with details that will be readily apparent to those of ordinary skilled in the art having benefit of the description herein. Also, a contact assembly and a blinker module of the present disclosure may be employed in various vehicles for switching or indicating purpose.
[025] The terms “comprises”, “comprising”, or any other variations thereof used in the disclosure, are intended to cover a non-exclusive inclusion, such that of the device or the assembly that comprises a list of components does not include only those components but may include other components not expressly listed or inherent to such device, or the assembly. In other words, one or more elements in the device or the system proceeded by “comprises... a” does not, without more constraints, preclude the existence of other elements or additional elements in the device and the assembly.
[026] The following paragraphs describe the present disclosure with reference to Fig. 2 to Fig 5b. In the figures, the same element or elements which have similar functions are indicated by the same reference signs. Referring to Fig. 2 to Fig. 3 which are exemplary embodiments of the present disclosure illustrating a blinker module (200) and a contact assembly (100) [interchangeably referred to as “the assembly (100)”] of the blinker module (200) for a vehicle.
[027] Referring to Fig. 2, the contact assembly (100) comprises a body (104) defined with an opening (114) at one end about a central axis (A- A). The body (104) is defined with a slot (112) at either ends of the body (104) to receive a pair of fixed contacts (105). The pair of fixed contacts (105) are disposed within the slot (112) of the body (104). The pair of fixed contacts (105) are fixed to an other end of the body (104) opposite to the one end. Each fixed contact (105) of the pair of fixed contacts (105) are positioned opposite to each other along the central axis (A-A). In an embodiment, the pair of fixed contacts (105) may be insert molded directly to the body (104). Each of the pair of fixed contacts (105) is a leaf type strip are defined with a connecting portion (120) attached to the other end of the body (104) and a contact portion (122) opposite to the connecting portion (120). The contact portion (122) extends beyond the opening (114). In an embodiment, the contact portion (122) of the pair of fixed contacts (105) is curved outward with respect to the body (104). In an embodiment, the pair of fixed contacts (105) resemble a plurality of terminals of at least one circuit. In an embodiment, the pair of fixed contacts (105) are manufactured of beryllium copper. A resilient member (106) is disposed within the opening (114) of the body (104). In an embodiment, the pair of fixed contacts (105) are electrically connected to an electromechanical relay circuit (not shown in Figs.) of the vehicle which operates blinkers or blinker switches.
[028] Further, a plunger (109) is movably disposed in the opening (114). The plunger (109) is defined with an elongated shaft (109a) at one end and a flange (109b) at an other end opposite to the one end. A sleeve (116) is defined on the elongated shaft (109a) at a distance from the flange (109b) to accommodate a movable contact (107) between the sleeve (116) and the flange (109b) (as shown in Fig. 2). The movable contact (107) is defined with a provision (107a) receivable by the elongated shaft (109a). In an embodiment the provision (107a) is hole capable of receiving the elongated shaft (109a). A handle (118) is connected to and extends away from the flange (109b). The plunger (109) is selectively actuated to displace between a first position and a second position upon applying a force on the handle (118). The first position and the second position are defined along the central axis (A-A). The elongated shaft (109a) is located within a portion of the opening (114) when the plunger (109) is in the first position. The movable contact (107) abuts with the contact portion (122) of the pair of fixed contacts (105) when the plunger (109) is displaced to the second position. The resilient member (106) is disposed along the elongated shaft (109a) and interposed between the body (104) and the sleeve (116) to bias the plunger (109). The movable contact (107) is biased away from the contact portion (122) by the resilient member (106) upon releasing the force on the handle (118) such that the plunger (109) returns to the first position. The movable contact (107) breaks the at least one circuit in the second position and the movable contact (107) bridges the at least one circuit in the first position. The plunger (109) is actuated by an actuator (232) which is coupled to a knob assembly (201).
[029] Now referring to Fig. 3, which illustrates an exploded view of the blinker module (200) for a vehicle (not shown in Figs.) in accordance with an embodiment of the present disclosure. The blinker module (200) comprises a housing (203) defined with a hollow elongated body having a first end (203a) and a second end (203b). In an embodiment, the housing (203) is defined with a top cover (208a) and sidewalls (208b) extending from either ends of the top cover (208a). A bottom cover (228) is connected to each sidewall (208b) to form an enclosure to support all components of the blinker module (200). A provision (203c) is defined at the first end (203a) of the housing (203) to receive the contact assembly (100). In an embodiment, the provision (203c) is defined in a cylindrical shape and however such structure cannot be construed as a limitation and the provision (203c) may be structure in any suitable shape such as square rectangle etc.
[030] The blinker module further comprises an actuator (232) that is defined with a provision (233) at its central portion (as shown in fig. 3). A groove (233a) extends around the provision (233) and a cam portion (235) is configured to extend from the groove (233a). The cam portion (235) is configured to abut a portion of the handle (118) of the contact assembly (100) to displace the plunger (109) to the second position. In an embodiment, the cam portion (235) includes a projection extending perpendicular to the central axis (A-A). A lever support (225) is disposed within the housing (203) along with the actuator (232). The lever support (225) is configured to support the actuator (232). The lever support (225) is defined with a protrusion (236) at one end and a slotted groove (237) at another end. The protrusion (236) is receivable within the provision (233) of the actuator (232) to support the actuator (232) on the lever support (225). In an embodiment, the protrusion (236) may be spring loaded with a metal ball underneath the spring (not shown in Figs.). The lever support (225) is configured to support a knob assembly (201).
[031] The knob assembly (201) comprises a knob (201a) at one end and a fork (234) at an other end. The knob (201a) is defined with a base portion (201b) and an actuating portion (201c). A lever (202) is connected to the base portion (201b) of the knob (201a) and the fork (234). In an embodiment, the knob (201a) is fixed to the lever (202) by means of a spring washer and a screw (not shown in Figs.). The lever (202) is defined with an arcuate portion (202a) extending downward from the knob (201a) to position the fork (234) within the housing (203) such that a portion of the lever (202) and the knob (201a) are disposed outside the housing (203). The fork (234) is connected to the arcuate portion (202a) and is defined with a provision (233) at one end to receive the protrusion (236) of the lever support (225). The fork (234) is disposed between the actuator (232) and the lever support (225). The fork (234) comprises a pair of tooth (234a) extending from the provision (233) to an other end of the fork (234) and a second slot is defined between the pair of tooth (234a). The second slot is configured to receive the cam portion (235). In an embodiment, the fork (234) is pivotally mounted on the lever support (225) such that the knob assembly (201) is pivotable about the protrusion (236) of the lever support (225). In an embodiment, the knob (201a) is actuated radially in a left or a right direction to activate the blinker module (200). In an embodiment, the blinker module (200) provides a first input signal to the electromechanical relay circuit (not shown in Figs.) in response to the actuation of the knob (201a) in the left or the right direction. Accordingly, the electromechanical relay circuit enables a left or right blinkers of the vehicle (not shown in Figs.) to emit light (i.e., ON condition) depending on the direction in which the knob (201a) is actuated by a rider. The knob (201a) is also actuated linearly along the axis (A- A) to operate the actuator (232) to displace the plunger (109) to bridge a contact between the pair of fixed contacts (105) and the movable contact (107). In an embodiment, the blinker module (200) provides a second input signal to the electromechanical relay circuit in response to the linear actuation of the knob (201a) along the axis (A- A). The electromechanical relay circuit disables the operation of the left or right blinkers to turn-off light (i.e., OFF condition). [032] The blinker module (200) further comprises a carrier (226) movably disposed within the housing (203) at the second end. The carrier (226) encases a strip comprising a pair of moving contacts (229). The pair of moving contacts (229) are biased by a resilient member (206) disposed between the carrier (226) and the pair of moving contacts (229). The carrier (226) is in contact with the fork (234) such that the carrier (226) is displaced by an outer surface of a tooth of the pair of tooth (234a) upon actuation of the knob (201a). In an embodiment, the carrier (226) returns to its original position when the knob (201a) reaches its home position. Further, a base (230) is disposed within the housing (203) at a fixed location with respect to the pair of moving contacts (229) of the carrier (226). The base (230) is mounted with one or more rivets which is also referred to as fixed contacts (231) that makes/breaks contact with the pair of moving contacts (229). When the knob (201a) is pressed radially either to the left or to the right direction, the carrier (226) moves in the opposite direction and overlaps the corresponding moving contact (229) of the pair of moving contacts (229) over the fixed contacts (231). The moving contact (229), thus makes contact with the fixed contacts (231) causing a flow of conduction current between the moving contacts (229) and the fixed contacts (231). The conduction current is supplied as a trigger signal to the electromechanical relay circuit which enables either of left or right blinkers to emit light based on the direction in which the knob (201a) is pressed. To cut-off the flow of current and to break the contact, the knob (201a) is pressed linearly to break the contact between the pair of fixed contacts (231) and the moving contact (229). Thus, the power supply is restricted and the blinker module (200) will be in OFF condition. In an embodiment, the carrier (226) is also returns to the center position by means upon linear actuation of the knob (201a). When the knob (201a) is at the center position, the moving contact (229) in the carrier (226) does not overlap with any of the fixed contacts (231), thus indicating that the blinker module (200) is at OFF condition.
[033] The bottom cover (228) is disposed beneath the housing (203) to enclose the knob assembly (201) within the housing (203). The bottom cover (228) is configured to support the knob assembly (201) within the housing (203). The bottom cover (228) is defined with a plurality of protrusions which are configured to engage with a plurality of slots (240) defined on the sidewalls (208b) such that the bottom cover (228) is snap fitted to the housing (203). The bottom cover (228) is defined with a groove (228a) at a central portion of the bottom cover (228) to receive the metal ball of the spring loaded protrusion. The metal ball slides within the groove (228a) to provide a haptic feedback upon actuation of the knob assembly (201) along the central axis (A- A). In an embodiment, the bottom cover (228) is defined with holes (not shown in Figs.) to drain water and dust particles entering into the blinker module (300).
[034] An operative configuration of the blinker module (200) is now explained with reference to Figs. 4a, 4b and 5a, 5b. As shown in Fig. 4a, the blinker module (200) is in OFF condition and the knob is in unpressed condition. At this position, the electromechanical relay circuit is operational and the knob (201a) can be operated radially in left and right directions. Upon operation of the knob (201a) in the left direction, the carrier (226) is displaced by the fork (234) such that the pair of moving contacts (229) on the carrier (226) make the contact with the corresponding fixed contacts (231) provided on the base (230). This enables the current flow through the relay circuit and activates the left blinker to emit light. Similarly, when the knob (201a) is actuated in the right direction, the carrier (226) is displaced in opposite direction and the moving contacts (229) make the contact with the corresponding fixed contacts (231) on the base (230). This enables the current flow to activate the corresponding blinker i.e. right blinker to emit light. During operation of the knob (201a) in the left and right directions, the plunger (109) remains in the first position and the movable contact (107) is disposed away from the handle (118) of the plunger (109) (as shown Fig. 4b).
[035] Now referring to Figs. 5a and 5b, the knob (201a) is actuated linearly in the central axis (A- A). At this position, the knob assembly (201) operates the actuator (232) such that the cam portion (235) displaces the plunger (109) from the first position to the second position. The movable contact (107) which is disposed on the plunger (109) makes the contact with the pair of fixed contacts (105). The second input signal is transmitted to the electromechanical relay circuit and the current flow is restricted to the blinkers. In an embodiment, the knob (201a) is held in place by a detent mechanism (not shown in Figs.) provided within the housing (203). Upon actuation of the knob (201a) once again, the detent mechanism is released and the plunger (109) is displaced to the first position by the resilient member (106). This breaks the contacts between the movable contact (107) and the pair of fixed contacts (105), thereby making the relay circuit operational and to use the blinkers for indication.
[036] In an embodiment, the body (104) of the contact assembly (100) is manufactured of a thermosetting material such as thermoplastics, polyurethane and the like. [037] In an embodiment, the movable contact (107) of the contact assembly (100) slides over the pair of fixed contacts (105) makes contact to eliminate oxidation or corrosion on the movable and the pair fixed contacts (107, 105).
[038] In an embodiment, the pair of fixed contacts (105) of the contact assembly (100) are positioned along the central axis (A-A) vertically to generate required contact pressure upon contact with the movable contact (107).
[039] The contact assembly (100) of the present disclosure is easy to install on the blinker module (200) due to its compactness with less number of components.
[040] The blinker module (200) of the present disclosure with the contact assembly (200) having vertical placement of fixed contacts (105) eliminates the chances of track formation, wear and tear which causes insulation resistance failure. This makes the blinker module (200) suitable for low ampere applications. Advantageously, this reduces cost of manufacture and maintenance costs of the blinker module (200).
Equivalents:
[041] With respect to the use of substantially any plural and/or singular terms herein, those having skill in the art can translate from the plural to the singular and/or from the singular to the plural as is appropriate to the context and/or application. The various singular/plural permutations may be expressly set forth herein for sake of clarity.
[042] It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as “open” terms (e.g., the term “including” should be interpreted as “including but not limited to,” the term “having” should be interpreted as “having at least,” the term “includes” should be interpreted as “includes but is not limited to,” etc.). It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases “at least one” and “one or more” to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles “a” or “an” limits any particular claim containing such introduced claim recitation to inventions containing only one such recitation, even when the same claim includes the introductory phrases “one or more” or “at least one” and indefinite articles such as “a” or “an” (e.g., “a” and/or “an” should typically be interpreted to mean “at least one” or “one or more”); the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should typically be interpreted to mean at least the recited number (e.g., the bare recitation of “two recitations,” without other modifiers, typically means at least two recitations, or two or more recitations). Furthermore, in those instances where a convention analogous to “at least one of A, B, and C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, and C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). In those instances, where a convention analogous to “at least one of A, B, or C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, or C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). It will be further understood by those within the art that virtually any disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase “A or B” will be understood to include the possibilities of “A” or “B” or “A and B.” While various aspects and embodiments have been disclosed herein, other aspects and embodiments will be apparent to those skilled in the art. The various aspects and embodiments disclosed herein are for purposes of illustration and are not intended to be limiting, with the true scope and spirit being indicated by the following claims.
Referral Numerals:
Figure imgf000014_0001
Figure imgf000015_0001
Figure imgf000016_0001

Claims

The claims:
1. A contact assembly (100) for a blinker module (200), the contact assembly (100) comprising: a body (104) defined with an opening (114) about a central axis (A- A); a pair of fixed contacts (105) mounted to the body (104), wherein each fixed contact (105) of the pair of fixed contacts (105) are positioned opposite to each other along the central axis (A- A); a plunger (109) movably disposed in the opening (114), wherein the plunger (109) is defined with an elongated shaft (109a) at one end and a flange (109b) at an other end opposite to the one end, and the plunger (109) is selectively actuated to displace between a first position and a second position; a movable contact (107) mounted to the plunger (109), wherein the movable contact (107) is defined with a provision (107a) receivable by the elongated shaft (109a); and wherein the movable contact (107) is positioned away from the pair of fixed contacts (105) in the first position of the plunger (109) and the movable contact (107) engages with the pair of fixed contacts (105) upon movement of the plunger (109) in the second position.
2. The contact assembly (100) as claimed in claim 1, wherein the plunger (109) is defined with a sleeve (116) provided on the elongated shaft (109a) to support the movable contact (107).
3. The contact assembly (100) as claimed in claim 2 comprises at least one resilient member (106) disposed along the elongated shaft (109a) and interposed between the body (104) and the sleeve (116) to bias the plunger (109).
4. The contact assembly (100) as claimed in claim 1, wherein each of the pair of one fixed contact (105) is a leaf type strip with a connecting portion (120) attached to the body (104) and a contact portion (122) extending away from the body (104).
5. The contact assembly (100) as claimed in claim 1, wherein the plunger (109) is defined with a handle (118) connected to the flange (109b) which is actuatable by an actuator (232) to displace the plunger (109) from the first position to the second position. The contact assembly (100) as claimed in claim 3, wherein the pair of fixed contacts (105) resemble a plurality of terminals of at least one circuit. The contact assembly (100) as claimed in claim 6, wherein the movable contact (107) breaks the at least one circuit in the second position and the movable contact (107) bridges the at least one circuit in the first position. The contact assembly (100) as claimed in claim 4, wherein the pair of fixed contacts (105) are manufactured of beryllium copper. A blinker module (200) for a vehicle, the blinker module (200) comprising: a housing (203); a contact assembly (100) disposed within a portion of the housing (203) from one end of the housing (203), the contact assembly (100) comprising: a body (104) defined with an opening (114) about a central axis (A- A); a pair of fixed contacts (105) mounted to the body (104), wherein each fixed contact (105) of the pair of fixed contacts (105) are positioned opposite to each other along the central axis (A- A); a plunger (109) movably disposed in the opening (114), wherein the plunger (109) is defined with an elongated shaft (109a) at one end and a flange (109b) at an other end opposite to the one end, and the plunger (109) is selectively actuated to displace between a first position to a second position; and a movable contact (107) mounted to the plunger (109), wherein the movable contact (107) is defined with a provision (107a) receivable by the elongated shaft (109a); a knob assembly (201) coupled to the plunger (109), extending from the housing (203), the knob assembly (101) comprising: a knob (201a) configured to selectively actuate the plunger (109); a lever (202) connected to the knob (201a) at one end, wherein the lever (202) is defined with a fork (234) at an other end; and an actuator (232) receivable within the fork (234), wherein the actuator (232) is configured to displace the plunger (109) between the first position and the second position upon actuation of the knob (101a) in the central axis (A-A), wherein the movable contact (107) is positioned away from the pair of fixed contacts (105) in the first position of the plunger (109) and the movable contact (107) engages with the pair of fixed contacts (105) upon movement of the plunger (109) in the second position. The blinker module (200) as claimed in claim 9, comprises a lever support (225) defined with a protrusion (236) at one end, wherein the lever support (225) is disposed within the housing (203) and configured to support the actuator (232) and the fork (234). The blinker module (200) as claimed in claim 10, wherein the actuator (232) and the fork (234) are defined with a provision (233) to receive the protrusion (236) of the lever support (225) to support the actuator (232) and the fork (234). The blinker module (200) as claimed in claim 11, wherein the fork (234) comprises a pair of teeth (234a) extending from the provision (233) to an other end of the fork (234) and a second slot is defined between the pair of teeth (234a) to receive a cam portion (235). The blinker module (200) as claimed in claim 12, wherein the cam portion (235) is defined with a projection extending perpendicular to the central axis (A-A), the projection is configured to abut a handle (118) of the plunger (109) of the contact assembly (100) to displace the plunger (109) to the second position.
PCT/IN2023/050257 2022-03-17 2023-03-17 A contact assembly for a blinker module with center push contact for a vehicle WO2023175633A1 (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2139815A (en) * 1983-05-10 1984-11-14 Viel Elettromec Lever operated switches

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2139815A (en) * 1983-05-10 1984-11-14 Viel Elettromec Lever operated switches

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