FR2220861A1 - Pressure operated switch for vehicle brake system - has different pressures for two switch positions and elastic electric conductor - Google Patents

Pressure operated switch for vehicle brake system - has different pressures for two switch positions and elastic electric conductor

Info

Publication number
FR2220861A1
FR2220861A1 FR7407647A FR7407647A FR2220861A1 FR 2220861 A1 FR2220861 A1 FR 2220861A1 FR 7407647 A FR7407647 A FR 7407647A FR 7407647 A FR7407647 A FR 7407647A FR 2220861 A1 FR2220861 A1 FR 2220861A1
Authority
FR
France
Prior art keywords
switch
brake system
electric conductor
vehicle brake
different pressures
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.)
Withdrawn
Application number
FR7407647A
Other languages
French (fr)
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.)
Lucas Electrical Co Ltd
Original Assignee
Lucas Electrical Co Ltd
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 Lucas Electrical Co Ltd filed Critical Lucas Electrical Co Ltd
Publication of FR2220861A1 publication Critical patent/FR2220861A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/18—Safety devices; Monitoring
    • B60T17/22—Devices for monitoring or checking brake systems; Signal devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H01H35/38—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by piston and cylinder
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/04—Energy stored by deformation of elastic members
    • H01H5/18—Energy stored by deformation of elastic members by flexing of blade springs

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Push-Button Switches (AREA)

Abstract

The switch is independent from varying fluid pressures produced by depression of the brake pedal. It consists of a hollow body with an orifice for the admission of the fluid and has a moving part operated by the fluid pressure. An elastic part, carrying the contacts, has a snap action and at the same time modifies the pressure required for the switch operation. There is a coil spring providing the main spring force. The snap action element can work with this main spring or opposes it. The switch controls the stop lights on the vehicle and the brake pressure for switching off the lights is less than that for switching them on.
FR7407647A 1973-03-07 1974-03-06 Pressure operated switch for vehicle brake system - has different pressures for two switch positions and elastic electric conductor Withdrawn FR2220861A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1114373 1973-03-07

Publications (1)

Publication Number Publication Date
FR2220861A1 true FR2220861A1 (en) 1974-10-04

Family

ID=9980830

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7407647A Withdrawn FR2220861A1 (en) 1973-03-07 1974-03-06 Pressure operated switch for vehicle brake system - has different pressures for two switch positions and elastic electric conductor

Country Status (2)

Country Link
JP (1) JPS49125873A (en)
FR (1) FR2220861A1 (en)

Also Published As

Publication number Publication date
JPS49125873A (en) 1974-12-02

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Legal Events

Date Code Title Description
ST Notification of lapse