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GB2062153A - Mounting structure or brake booster-master cylinder assembly - Google Patents

Mounting structure or brake booster-master cylinder assembly Download PDF

Info

Publication number
GB2062153A
GB2062153A GB8034991A GB8034991A GB2062153A GB 2062153 A GB2062153 A GB 2062153A GB 8034991 A GB8034991 A GB 8034991A GB 8034991 A GB8034991 A GB 8034991A GB 2062153 A GB2062153 A GB 2062153A
Authority
GB
United Kingdom
Prior art keywords
master cylinder
brake booster
brake
bracket
vehicle
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.)
Granted
Application number
GB8034991A
Other versions
GB2062153B (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.)
Aisin Corp
Original Assignee
Aisin Seiki 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 Aisin Seiki Co Ltd filed Critical Aisin Seiki Co Ltd
Publication of GB2062153A publication Critical patent/GB2062153A/en
Application granted granted Critical
Publication of GB2062153B publication Critical patent/GB2062153B/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
    • B60T7/00—Brake-action initiating means
    • B60T7/02—Brake-action initiating means for personal initiation
    • B60T7/04—Brake-action initiating means for personal initiation foot actuated
    • B60T7/06—Disposition of pedal
    • 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
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
    • B60T13/46—Vacuum systems
    • B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
    • B60T13/567—Vacuum systems indirect, i.e. vacuum booster units characterised by constructional features of the casing or by its strengthening or mounting arrangements
    • 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
    • B60T7/00—Brake-action initiating means
    • B60T7/02—Brake-action initiating means for personal initiation
    • B60T7/04—Brake-action initiating means for personal initiation foot actuated

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Braking Systems And Boosters (AREA)
  • Transmission Of Braking Force In Braking Systems (AREA)
  • Body Structure For Vehicles (AREA)
  • Braking Elements And Transmission Devices (AREA)

Abstract

A structure for mounting a brake booster 19 and master cylinder 14 on a vehicle such as a truck with its cab mounted over the engine comprises a stationary bracket 10 pivotally mounting a brake pedal 23 and also mounting the brake master cylinder. The brake booster is connected between the pedal and the master cylinder and is secured to the master cylinder but not to the stationary bracket. <IMAGE>

Description

SPECIFICATION Mounting structure of brake booster-master cylinder assembly This invention relates to a brake booster and master cylinder assembly for a vehicle, particularly but not exclusively to such an assembly for a truck in which the driver's cab is located over the engine of the vehicle.
It is a conventional practice to fix the brake booster, or servo mechanism, to a vertically extending bracket of the vehicle and to fix the brake master cylinder to the brake booster.
Therefore, the brake reaction is transmitted to the master cylinder, then to the brake booster, and finally to the bracket. As a result, the brake booster is required to have sufficient strength to withstand not only its own operational pressure but also the stresses of mounting.
The invention provides a brake booster and master cylinder assembly for a vehicle, comprising a mounting bracket pivotally mounting a pedal for the brake mechanism, and means securing the master cylinder to the mounting bracket, wherein the brake booster is operatively connected between the foot pedal and the master cylinder and is secured to the master cylinder but not to the mounting bracket.
The assembly of the invention has a mounting structure which is effective and light in weight, and is particularly suited for use in a truck which has its cab mounted over the engine. The weight saving arises because the brake booster is not required to withstand the stresses of mounting to the bracket. The master cylinder, on the other hand, is always sufficiently robust to withstand such stresses.
Drawings Figure 1 is a fragmentary sectional view of an assembly according to the invention, mounted on a vehicle; and Figure 2 is a front view as seen from the direction of the arrow A of Figure 1.
In the drawings, a vertical bracket 10 is securely fitted to a vehicle cab 11 by means of bolts 12 and 1 3. The vehicle may be a truck with its cab 11 located over the engine.
A brake master cylinder 14 is fixed to the bracket 10 by bolts 1 5 and 16 and provided with an inlet port 17 and an outlet port 18 which respectively are fluidically connected to an oil reservoir and to slave brake cylinders, not shown.
A pneumatically operable brake booster 1 9 of conventional structure is secured to the brake master cylinder 14 by bolts 20 and includes a push rod 21 sealingly covered by a rubber boot 22 to actuate the control valve, not shown, mounted within the booster 19. A brake pedal 23 is pivotally carried on the bracket 10 by a pin 24 and is pivotally connected to the push rod 21 of the brake booster 19 at one end thereof through a pin 25.
It will be appreciated that the brake booster 1 9 has no means directly connecting it with the bracket 10 but is connected only to the master cylinder 14. As a consequence, -the stresses on the brake booster 1 9 in use are purely internal, resulting from the booster operational pressure.
On the other hand the master cylinder 14 is naturally of more robust construction and is designed to resist an internal fluid pressure which is much greater than the booster operational pressure. Therefore, it is unnecessary to increase the strength of the master cylinder 14 to permit its mounting on the bracket 10.
A steering linkage 26 and an instrument panel 27 in front of the driver seat are illustrated by dotted lines in Figure 1.
1. A brake booster and master cylinder assembly for a vehicle, comprising a mounting bracket pivotally mounting a pedal for the brake mechanism, and means securing the master cylinder to the mounting bracket, wherein the brake booster is operatively connected between the foot pedal and the master cylinder and is secured to the master cylinder but not to mounting bracket.
2. An assembly according to claim 1, wherein the means securing the master cylinder to the mounting bracket comprise bolts.
3. An assembly according to claim 1 or claim 2, wherein the mounting bracket extends vertically from the floor of a vehicle.
4. An assembly according to claim 3, wherein the vehicle is a truck with its cab located over the engine.
5. A brake booster and master cylinder assembly substantially as described herein with reference to the drawings.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (5)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Mounting structure of brake booster-master cylinder assembly This invention relates to a brake booster and master cylinder assembly for a vehicle, particularly but not exclusively to such an assembly for a truck in which the driver's cab is located over the engine of the vehicle. It is a conventional practice to fix the brake booster, or servo mechanism, to a vertically extending bracket of the vehicle and to fix the brake master cylinder to the brake booster. Therefore, the brake reaction is transmitted to the master cylinder, then to the brake booster, and finally to the bracket. As a result, the brake booster is required to have sufficient strength to withstand not only its own operational pressure but also the stresses of mounting. The invention provides a brake booster and master cylinder assembly for a vehicle, comprising a mounting bracket pivotally mounting a pedal for the brake mechanism, and means securing the master cylinder to the mounting bracket, wherein the brake booster is operatively connected between the foot pedal and the master cylinder and is secured to the master cylinder but not to the mounting bracket. The assembly of the invention has a mounting structure which is effective and light in weight, and is particularly suited for use in a truck which has its cab mounted over the engine. The weight saving arises because the brake booster is not required to withstand the stresses of mounting to the bracket. The master cylinder, on the other hand, is always sufficiently robust to withstand such stresses. Drawings Figure 1 is a fragmentary sectional view of an assembly according to the invention, mounted on a vehicle; and Figure 2 is a front view as seen from the direction of the arrow A of Figure 1. In the drawings, a vertical bracket 10 is securely fitted to a vehicle cab 11 by means of bolts 12 and 1 3. The vehicle may be a truck with its cab 11 located over the engine. A brake master cylinder 14 is fixed to the bracket 10 by bolts 1 5 and 16 and provided with an inlet port 17 and an outlet port 18 which respectively are fluidically connected to an oil reservoir and to slave brake cylinders, not shown. A pneumatically operable brake booster 1 9 of conventional structure is secured to the brake master cylinder 14 by bolts 20 and includes a push rod 21 sealingly covered by a rubber boot 22 to actuate the control valve, not shown, mounted within the booster 19. A brake pedal 23 is pivotally carried on the bracket 10 by a pin 24 and is pivotally connected to the push rod 21 of the brake booster 19 at one end thereof through a pin 25. It will be appreciated that the brake booster 1 9 has no means directly connecting it with the bracket 10 but is connected only to the master cylinder 14. As a consequence, -the stresses on the brake booster 1 9 in use are purely internal, resulting from the booster operational pressure. On the other hand the master cylinder 14 is naturally of more robust construction and is designed to resist an internal fluid pressure which is much greater than the booster operational pressure. Therefore, it is unnecessary to increase the strength of the master cylinder 14 to permit its mounting on the bracket 10. A steering linkage 26 and an instrument panel 27 in front of the driver seat are illustrated by dotted lines in Figure 1. CLAIMS
1. A brake booster and master cylinder assembly for a vehicle, comprising a mounting bracket pivotally mounting a pedal for the brake mechanism, and means securing the master cylinder to the mounting bracket, wherein the brake booster is operatively connected between the foot pedal and the master cylinder and is secured to the master cylinder but not to mounting bracket.
2. An assembly according to claim 1, wherein the means securing the master cylinder to the mounting bracket comprise bolts.
3. An assembly according to claim 1 or claim 2, wherein the mounting bracket extends vertically from the floor of a vehicle.
4. An assembly according to claim 3, wherein the vehicle is a truck with its cab located over the engine.
5. A brake booster and master cylinder assembly substantially as described herein with reference to the drawings.
GB8034991A 1979-11-02 1980-10-30 Mounting structure of brake boostermaster cylinder assembly Expired GB2062153B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1979152627U JPS6315083Y2 (en) 1979-11-02 1979-11-02

Publications (2)

Publication Number Publication Date
GB2062153A true GB2062153A (en) 1981-05-20
GB2062153B GB2062153B (en) 1983-04-07

Family

ID=15544509

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8034991A Expired GB2062153B (en) 1979-11-02 1980-10-30 Mounting structure of brake boostermaster cylinder assembly

Country Status (4)

Country Link
JP (1) JPS6315083Y2 (en)
DE (1) DE3040722A1 (en)
FR (1) FR2468492A1 (en)
GB (1) GB2062153B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4884403A (en) * 1988-07-21 1989-12-05 Itt Corporation Modular brake actuator
FR2639595A1 (en) * 1988-11-30 1990-06-01 Bendix France BRAKING DEVICE FOR MOTOR VEHICLE
GB2235026A (en) * 1989-08-15 1991-02-20 Gen Motors France Assembled module of brake booster and pedal
GB2235263A (en) * 1989-08-15 1991-02-27 Gen Motors France Assembled module of brake booster and pedal
US6276483B1 (en) 1995-01-23 2001-08-21 Volkswagen Ag Motor vehicle safety arrangement
DE102010012484A1 (en) * 2010-03-24 2011-09-29 GM Global Technology Operations LLC , (n. d. Ges. d. Staates Delaware) Brake booster arrangement for passenger car, has brake booster spaced from brake pedal in region of floor structure of motor car, where frame tunnel, longitudinal beams, side skirt and floor plate forms floor structure of motor car

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2043505A1 (en) * 1970-09-02 1972-03-09 Adam Opel AG, 6090 Russeisheim Device for actuating a brake booster, in particular for motor vehicles
US3766802A (en) * 1972-12-06 1973-10-23 Gen Motors Corp Brake pedal assembly
DE2724969A1 (en) * 1977-06-02 1978-12-14 Hans O Schroeter Brake actuating mechanism with variable transmission ratio - has actuating lever with cam projection acting on force transmission roller
JPS5446428U (en) * 1977-09-05 1979-03-30
SE429123B (en) * 1979-01-16 1983-08-15 Saab Scania Ab ARRANGEMENTS FOR PEDAL CARE IN VEHICLE

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4884403A (en) * 1988-07-21 1989-12-05 Itt Corporation Modular brake actuator
FR2639595A1 (en) * 1988-11-30 1990-06-01 Bendix France BRAKING DEVICE FOR MOTOR VEHICLE
EP0371830A1 (en) * 1988-11-30 1990-06-06 BENDIX EUROPE Services Techniques S.A. Automotive vehicle brake device
US5027600A (en) * 1988-11-30 1991-07-02 Bendix France Brake booster with recessed shell receiving master cylinder flange
GB2235026A (en) * 1989-08-15 1991-02-20 Gen Motors France Assembled module of brake booster and pedal
GB2235263A (en) * 1989-08-15 1991-02-27 Gen Motors France Assembled module of brake booster and pedal
US6276483B1 (en) 1995-01-23 2001-08-21 Volkswagen Ag Motor vehicle safety arrangement
DE102010012484A1 (en) * 2010-03-24 2011-09-29 GM Global Technology Operations LLC , (n. d. Ges. d. Staates Delaware) Brake booster arrangement for passenger car, has brake booster spaced from brake pedal in region of floor structure of motor car, where frame tunnel, longitudinal beams, side skirt and floor plate forms floor structure of motor car

Also Published As

Publication number Publication date
JPS6315083Y2 (en) 1988-04-27
JPS5670460U (en) 1981-06-10
FR2468492A1 (en) 1981-05-08
DE3040722A1 (en) 1981-05-21
FR2468492B1 (en) 1984-10-19
GB2062153B (en) 1983-04-07
DE3040722C2 (en) 1988-04-28

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19941030