ES257158A1 - Cilindro hidraulico operador y multiplicador de presiën para frenos - Google Patents

Cilindro hidraulico operador y multiplicador de presiën para frenos

Info

Publication number
ES257158A1
ES257158A1 ES0257158A ES257158A ES257158A1 ES 257158 A1 ES257158 A1 ES 257158A1 ES 0257158 A ES0257158 A ES 0257158A ES 257158 A ES257158 A ES 257158A ES 257158 A1 ES257158 A1 ES 257158A1
Authority
ES
Spain
Prior art keywords
chamber
auxiliary piston
bottom wall
cavity
piston
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
ES0257158A
Other languages
English (en)
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.)
Fiat SpA
Original Assignee
Fiat 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 Fiat SpA filed Critical Fiat SpA
Publication of ES257158A1 publication Critical patent/ES257158A1/es
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F16D65/00—Parts or details
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • F16D65/22—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for pressing members apart, e.g. for drum brakes
    • 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
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/16—Master control, e.g. master cylinders
    • B60T11/224—Master control, e.g. master cylinders with pressure-varying means, e.g. with two stage operation provided by use of different piston diameters including continuous variation from one diameter to another
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1409—Characterised by the construction of the motor unit of the straight-cylinder type with two or more independently movable working pistons
    • 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
    • F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
    • F16D51/16—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis
    • F16D51/18—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes
    • 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
    • F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
    • F16D51/46—Self-tightening brakes with pivoted brake shoes, i.e. the braked member increases the braking action
    • F16D51/48—Self-tightening brakes with pivoted brake shoes, i.e. the braked member increases the braking action with two linked or directly-interacting brake shoes
    • F16D51/52—Self-tightening brakes with pivoted brake shoes, i.e. the braked member increases the braking action with two linked or directly-interacting brake shoes fluid actuated
    • 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
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
    • F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
    • F16D55/228—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a separate actuating member for each side

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Braking Systems And Boosters (AREA)

Abstract

Cilindro hidráulico operador y multiplicador de presión para frenos, especialmente para el accionamiento de los elementos de frotamiento de los frenos, en instalaciones frenantes hidráulicas de los vehículos, comprendiendo un cuerpo con una cavidad cilíndrica longitudinal cerrada a una extremidad por una pared de fondo del cuerpo mismo y por la otra extremidad por un pistón principal deslizable en la misma cavidad, la cual es ligada en la proximidad de la pared de fondo antedicha, con una fuente de líquido apta para alimentar a dicha cavidad con líquido a presión, caracterizado por el hecho de que, en la parte de dicha cavidad próxima a dicha pared de fondo es montado deslizable un pistón auxiliar cuya cara vuelta hacia dicha pared de fondo está siempre expuesta a la acción de la presión hidráulica proviniente de la antedicha fuente y que divide la citada cavidad en a lo menos dos cámaras, una primera cámara, situada entre el pistón auxiliar y dicha pared de fondo y una segunda cámara situada entre el pistón auxiliar y el pistón principal, siendo guiada una parte del pistón auxiliar, por su lado vuelto hacia el pistón principal sobre una superficie de guia cilíndrica, que tiene el diámetro menor del diámetro de la citada parte de la cavidad interna del cuerpo en el que es soportado deslizable el pistón auxiliar por lo que la superficie de este último, sujeta a la acción de la presión hidráulica que hay en la segunda cámara es sustancialmente menor de aquella sujeta a la acción de la presión hidráulica que hay en la primera cámara, siendo asimismo previstos: un paso que une la primera y la segunda cámara, una válvula apta para controlar el flujo del líquido entre las dos cámaras susodichas, a través del citado paso y a lo menos un resorte de reacción interpuesto entre el pistón auxiliar y un órgano llevado por el cuerpo del cilindro apto para oponerse al avance del pistón auxiliar en dirección del pistón principal, dicha válvula asegurando la comunicación entre la primera y la segunda cámara cuando el pistón auxiliar se encuentra en su posición de fondo de cursa en proximidad de dicha pared de fondo interceptando tal comunicación, solo después de un desplazamiento del pistón auxiliar contra la acción del resorte de reacción e impidiendo el retorno del líquido por la segunda a la primera cámara cuando la presión en la segunda cámara supere aquella que hay en la primera cámara, estando dicho resorte de reacción montado en el cilindro con un premantenedor, para obtener que el desplazamiento del pistón auxiliar y la interceptación de la comunicación entre las dos cámaras ocurra solo después de que la presión hidráulica transmitida al cilindro de la susodicha fuente haya alcanzado un valor preestablecido.
ES0257158A 1959-09-05 1960-04-06 Cilindro hidraulico operador y multiplicador de presiën para frenos Expired ES257158A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1503759 1959-09-05

Publications (1)

Publication Number Publication Date
ES257158A1 true ES257158A1 (es) 1960-07-16

Family

ID=11146207

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0257158A Expired ES257158A1 (es) 1959-09-05 1960-04-06 Cilindro hidraulico operador y multiplicador de presiën para frenos

Country Status (3)

Country Link
ES (1) ES257158A1 (es)
GB (1) GB966219A (es)
NL (1) NL258337A (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115628246A (zh) * 2022-10-17 2023-01-20 台州市黄岩恒美塑料机械有限公司 一种高效气缸

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112024602A (zh) * 2020-08-14 2020-12-04 湖南科美达重工有限公司 一种双行程胀缩油缸

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115628246A (zh) * 2022-10-17 2023-01-20 台州市黄岩恒美塑料机械有限公司 一种高效气缸

Also Published As

Publication number Publication date
GB966219A (en) 1964-08-06
NL258337A (es)

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