EP1835519B1 - Snap switch for controlling motors of electrical apparatuses for motor vehicles - Google Patents

Snap switch for controlling motors of electrical apparatuses for motor vehicles Download PDF

Info

Publication number
EP1835519B1
EP1835519B1 EP07005281A EP07005281A EP1835519B1 EP 1835519 B1 EP1835519 B1 EP 1835519B1 EP 07005281 A EP07005281 A EP 07005281A EP 07005281 A EP07005281 A EP 07005281A EP 1835519 B1 EP1835519 B1 EP 1835519B1
Authority
EP
European Patent Office
Prior art keywords
lamina
silicone
switch
snap switch
contact
Prior art date
Legal status (The legal status 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 status listed.)
Not-in-force
Application number
EP07005281A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1835519A2 (en
EP1835519A3 (en
Inventor
Marco Barile
Umberto Rulfi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bitron SpA
Original Assignee
Bitron SpA
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 Bitron SpA filed Critical Bitron SpA
Publication of EP1835519A2 publication Critical patent/EP1835519A2/en
Publication of EP1835519A3 publication Critical patent/EP1835519A3/en
Application granted granted Critical
Publication of EP1835519B1 publication Critical patent/EP1835519B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H23/00—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
    • H01H23/02—Details
    • H01H23/12—Movable parts; Contacts mounted thereon
    • H01H23/16—Driving mechanisms
    • H01H23/20—Driving mechanisms having snap action
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H23/00—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
    • H01H23/02—Details
    • H01H23/04—Cases; Covers
    • H01H23/06—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2215/00—Tactile feedback
    • H01H2215/004—Collapsible dome or bubble
    • H01H2215/006—Only mechanical function
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
    • H01H2300/01—Application power window

Definitions

  • the present invention relates to a quick make-and-break switch or snap switch for controlling an electric motor for motor vehicles, suitable for driving directly the motor (power switch), always maintaining a feel of operation that is very similar to the one that is present on signal switches where snap action is obtained by means of silicone bubbles.
  • a water-tight switch is provided by using the same element (silicone pad) that is used for generating said feel of operation.
  • the purpose of the present invention is to exploit silicone bubbles for creating a snap switch for controlling motors of electrical apparatuses of motor vehicles, in particular for power windows, that will present characteristics of contact suitable for driving the motor directly, namely, an opening and closing of the contact that is very fast, aimed above all at preventing degradation of the NO contact.
  • a switch for controlling electric motors of motor vehicles in particular for motors of power windows, made up of a button 1 pivoted in 1b on the body of the switch, formed by a lid 2a and a base 2b.
  • the button is provided with two prods 3a and 3b, which act on cylindrical actuators 4 made integrally in a silicone pad 5 and connected thereto through a thin wall having a loop-like profile that enables a practically free relative movement thereof.
  • the silicone pad 5 is provided with silicone bubbles 10 of a known and widely used type and a peripheral edge 5a functioning as seal, which, when the body of the switch is closed, is pinched between the edges of the lid 2a and of the base 2b. In this way the part lying underneath the pad, with its contents, is rendered totally impermeable to atmospheric agents, thus guaranteeing proper operation of the switch.
  • a metal lamina 6 having an elongated shape, pivoted via a hole 6a on a fulcrum 8 fixed and electrically connected to a printed or sheared circuit 19, contained and fixed in the base 2b.
  • One end 8a of the metal lamina is set underneath the actuator 4, whereas the other end 9 of the lamina itself, provided with a flexible part 9a and an electrical contact 11 made of a material suited to the purpose, is located in a position corresponding to one of the silicone bubbles 10,
  • the metal lamina has a particular shape and mode of operation in so far as for the major part of its length it is substantially rigid, having two lateral turned-under edges that form a cross section substantially shaped like a U turned upside down, and this as regards the end 8a subject to the action of the actuator and the central part to which the fulcrum is connected.
  • the second end 9 that comes to occupy a position underneath the silicone bubble continues to be rigid up to a point underneath the bubble and is provided with a central slit with bent-down stiffening edges 9b, which is designed to centre it on the bubble 10.
  • the lamina terminates with the end part 9a formed by a flexible arched reed connected to the end 9 and carrying said electrical contact 11.
  • a normally closed (NC) faston connector 14 and a normally open (NO) faston connector 16 are in turn electrically connected by force fit or soldering to said printed or sheared circuit 19, which in turn carries the electrical connection to faston connectors 20 contained in the base 2b, which have the purpose of providing a connection to the wiring through which the electric motor of the power window is directly driven.
  • the switch according to the invention functions in the way described in what follows.
  • the toggle button 1 by rotating about its two pins 1b slotted in the corresponding holes on the body of the switch formed by the lid 2a and the base 2b, produces a vertical displacement of the two prods (one upwards and the other downwards) made integrally on the button itself.
  • the plot of the force versus the displacement of the present actuator is mainly defined by the characteristic curve of the silicone bubble, which, notoriously, has a first stretch of travel in which the force increases and a second stretch in which it decreases, with a profile that is very close to a sinusoid.
  • the flexible part 9a of the metal lamina 6 is studied in such a way as to have, in the resting conditions, a pre-load (elastic deformation due to the difference between the natural shape of the item and the profile that it is forced to assume after its assembly) such as to absorb the first part of the travel of the system (the one that for the characteristics of the bubble requires an increasing force) without detaching the contact 11 from the NC faston connector 14.
  • a pre-load elastic deformation due to the difference between the natural shape of the item and the profile that it is forced to assume after its assembly
  • absorb the first part of the travel of the system the one that for the characteristics of the bubble requires an increasing force
  • the system thus reaches the area of the characteristic curve of the silicone bubble in which there is a sharp rise in the force of reaction thereof, and the return travel undergoes a new acceleration.
  • the entire system described is made up of two systems inside the switch, which work alternately, one during rotation of the button 1 in one direction, and the other during rotation of the button 1 in the opposite direction.
  • the various metal components create a switch, in which the fulcrum 8 and the lamina 6 perform the connection with the "common" contact to be switched, and the NC faston connector 14 and the NO faston connector 16 alternately become the outputs.
  • the fulcrum 8, the NC faston connector 14 and the NO faston connector 16 are in turn electrically connected via force fit or soldering to a sheared or' printed circuit 19, which in turn carries the electrical connection to the faston connectors 20 for connection with the wiring through which the electric motor of the power window is directly driven.
  • the same printed or sheared circuit 19, if so required, can carry electronic components (LEDs and resistors) necessary for enabling lighting-up of the switch or other electronic components that perform other desired functions.
  • the entire switch is then closed and sealed by the base 2b that carries all the components referred to above.
  • a contact 7 is made on the NO faston connector 16 using a metal that is of higher quality from the electromechanical standpoint (higher conductivity and mechanical resistance to flashing-over and to higher temperatures), whereas on the NC faston connector 14 the passage of current occurs directly on the metal carrying the contact.
  • a second solution useful for rendering the system more reactive and faster has been to make the actuator 4 of elastic material, which enables manual actuation of the system to be rendered less controllable, in so far as the central section in the forward phase is compressed and at the moment of snap-action of the bubble 10 restores part of the energy, impressing on the lamina 6 an additional acceleration, whereas in the return phase it absorbs part of the acceleration impressed by the bubble rendering slow return of the lamina 6 impossible in the case where the user were to attempt to obtain slow return thereof.
  • an elastic intermediate element (silicone pad) 5 made of transparent material it will be possible to obtain lighting-up the outer surface of the button 1.

Landscapes

  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Push-Button Switches (AREA)
  • Motor Or Generator Frames (AREA)
  • Control Of Electric Motors In General (AREA)
  • Lock And Its Accessories (AREA)
  • Control Of Direct Current Motors (AREA)
EP07005281A 2006-03-17 2007-03-14 Snap switch for controlling motors of electrical apparatuses for motor vehicles Not-in-force EP1835519B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000200A ITTO20060200A1 (it) 2006-03-17 2006-03-17 Interruttore a scatto per il comando di motori di apparecchi elettrici di autoveicoli.

Publications (3)

Publication Number Publication Date
EP1835519A2 EP1835519A2 (en) 2007-09-19
EP1835519A3 EP1835519A3 (en) 2009-04-08
EP1835519B1 true EP1835519B1 (en) 2011-10-26

Family

ID=38009414

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07005281A Not-in-force EP1835519B1 (en) 2006-03-17 2007-03-14 Snap switch for controlling motors of electrical apparatuses for motor vehicles

Country Status (4)

Country Link
EP (1) EP1835519B1 (it)
AT (1) ATE531062T1 (it)
ES (1) ES2379374T3 (it)
IT (1) ITTO20060200A1 (it)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104733203A (zh) * 2015-03-27 2015-06-24 上海沪工汽车电器有限公司 一种开关导电橡胶的防水结构

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4045650A (en) * 1976-01-29 1977-08-30 General Motors Corporation Jumper touch sensor current switching device
IT231473Y1 (it) * 1993-08-11 1999-08-03 Valvar Srl Interruttore a scatto rapido per il comando di un dispositivo elettrico
IT1303200B1 (it) * 1998-12-09 2000-10-30 Bitron Spa Interruttore elettrico a lamina a doppio scatto.

Also Published As

Publication number Publication date
EP1835519A2 (en) 2007-09-19
ITTO20060200A1 (it) 2007-09-18
ATE531062T1 (de) 2011-11-15
EP1835519A3 (en) 2009-04-08
ES2379374T3 (es) 2012-04-25

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