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Brake system having an electric servo brake

A technology of servo brakes and braking systems, applied in the directions of brakes, brake transmission devices, transmission devices, etc., can solve the problems of influence, unfavorable chain reliability, and inability to consider the difference between the clearance of the driving mechanism.

Inactive Publication Date: 2015-12-09
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, this system for transmitting the movement of the electric motor to the pushrod of the master cylinder has the disadvantage that it cannot take into account the play difference between two symmetrical drive mechanisms with racks, even if the play difference is particularly small. Yes, so in practice it is necessary to arrange the support of the reaction disc obliquely, because in practice the two racks do not advance exactly equally; the reaction disc is positioned obliquely, and this creates a disadvantage for the reliability of the kinematic chain up to the master cylinder Impact

Method used

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  • Brake system having an electric servo brake
  • Brake system having an electric servo brake
  • Brake system having an electric servo brake

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Embodiment Construction

[0024] figure 1 A general view of a brake system according to the invention with a master cylinder 1 and an electric servo brake 2 is shown, wherein the master cylinder 1 and the actuating pedal 3 are shown very schematically.

[0025] The electric servo brake 2 is formed by an electric motor 21, the driven shaft of which carries a screw 22 to transmit the torque of the motor symmetrically through two Transfer means 23a, 23b symmetrical to the axis xx carry out the transfer.

[0026] The brake pedal 3 is on the right (rear) in the figure, and the master cylinder 1 is on the left (front) in the figure. The transmission means 23a, 23b of the electric motor are formed by two helical gears 231 each carried by a shaft 232 provided with a spur gear 233 coacting with a rack 24a, 24b respectively. The two racks 24a, 24b are slidably seated in guides 251 of the body 25 of the servo brake 2, figure 1 Only one rack is visible in . The racks 24a, 24b are attached to the reaction dis...

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Abstract

The invention relates to a brake system, comprising a master cylinder (1) and an electric servo brake. The brake system has an electric motor, which drives a screw by means of helical gears (231), which are born by a shaft (232), which bears a gear (233), which meshes with a gear rack (24a, 24b). The two gear racks (24a, 24b) are guided in rails (251) of the body (25) of the electric servo brake (2). A lever (28) lies on the gear racks (24a, 24b) by means of the two ends (281a, 281b) of the lever. The lever is connected to a support (29) by means of a pivot point (282), which support lies flat against the side (271) of the reaction disk (27), which in turn lies against the push rod that actuates the master cylinder (1).

Description

technical field [0001] The invention relates to a brake system with a master cylinder and an electric servo brake, comprising: [0002] - an electric motor that drives a screw that engages in double helical gears carried by a shaft each provided with a gear that is in contact with an electric servo The axis (xx) of the brake, which is also the axis of the master cylinder, co-operates with one of a pair of racks in diametrically opposite positions, [0003] - where the two racks push the push rod acting on the master cylinder by means of a reaction disc, the control rod can be pressed directly onto the reaction disc by means of a plunger. Background technique [0004] Braking system with master cylinder and electric servo brake, the movement of the electric motor is transmitted to the master cylinder by means of two mechanisms symmetrical about the axis (xx) of the system for transmitting the movement of the electric motor to the push rod Such braking systems are known in v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T13/74F16H1/22F16H19/04
CPCB60T13/745F16H19/04
Inventor B.卡尼亚克
Owner ROBERT BOSCH GMBH
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