GB1465626A - Braking warning system - Google Patents

Braking warning system

Info

Publication number
GB1465626A
GB1465626A GB1717474A GB1717474A GB1465626A GB 1465626 A GB1465626 A GB 1465626A GB 1717474 A GB1717474 A GB 1717474A GB 1717474 A GB1717474 A GB 1717474A GB 1465626 A GB1465626 A GB 1465626A
Authority
GB
United Kingdom
Prior art keywords
leaf spring
contact
engage
ball
inertia
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.)
Expired
Application number
GB1717474A
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.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
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 Toyota Motor Corp filed Critical Toyota Motor Corp
Publication of GB1465626A publication Critical patent/GB1465626A/en
Expired 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Emergency Alarm Devices (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

1465626 Fluid pressure switches TOYOTA JIDOSHA KOGYO KK 19 April 1974 [21 Nov 1973] 17174/74 Heading H1N [Also in Division F2] A system for sending out a warning signal if deceleration of a vehicle is not consistent with the brake pressure applied due to, for example, overheating or water in a brake mechanism, comprises a switch mounted at angle on a vehicle body 40 by a bracket 39. Fluid pressure from the master cylinder 3 acts through an aperture 8 and chamber 9 on a diaphragm 10 which causes leftward movement of a member 18 carrying a contact 26 adapted to engage with a contact 33 of a leaf spring 31 biased to the right by a ball 35, the latter engaging the leaf spring 31 under gravity. Under normal braking contacts 26, 33 do not engage since vehicle deceleration in direction P causes ball 35 to move leftward under inertia and the natural leftward bias of spring 31 moves contact 33 away from contact 26. If the brake pressure does not give rise to an appropriate deceleration contacts 26, 33 do engage and a circuit is made through a terminal 17, battery 38 and switch body 1 causing a lamp or buzzer 37 to be activated. In an alternative embodiment, a weight is fixed to the leaf spring to replace the ball. In a modification of this embodiment, the inertia and brake pressure responsive parts of the switch are separated physically but are electrically coupled through terminals on each part. The inertia responsive part may have a screw (56) engaging the leaf spring to adjust the stress thereof.
GB1717474A 1973-11-21 1974-04-19 Braking warning system Expired GB1465626A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13093173A JPS5142372B2 (en) 1973-11-21 1973-11-21

Publications (1)

Publication Number Publication Date
GB1465626A true GB1465626A (en) 1977-02-23

Family

ID=15046051

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1717474A Expired GB1465626A (en) 1973-11-21 1974-04-19 Braking warning system

Country Status (2)

Country Link
JP (1) JPS5142372B2 (en)
GB (1) GB1465626A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2121495A (en) * 1982-04-23 1983-12-21 Derek Allcock A method of detection and separation of wheel drag and braking forces suitable for incorporation into braking control systems

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5493683U (en) * 1977-12-16 1979-07-03
JPS5920754A (en) * 1982-07-23 1984-02-02 Sumitomo Electric Ind Ltd Alarming apparatus in electrically controlled brake apparatus
JPS5987362U (en) * 1982-12-03 1984-06-13 三菱自動車工業株式会社 Brake fade warning device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2121495A (en) * 1982-04-23 1983-12-21 Derek Allcock A method of detection and separation of wheel drag and braking forces suitable for incorporation into braking control systems

Also Published As

Publication number Publication date
JPS5142372B2 (en) 1976-11-15
JPS5082735A (en) 1975-07-04

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee