Parking assisting device, vehicle braking system and vehicle

Abstract

The invention discloses a parking assisting device, a vehicle braking system and a vehicle. The parking assisting device comprises an electric control valve (12) arranged on a brake oil-supply pipeline connected to a position between a brake master pump (2) and a wheel brake, a first current loop (18) which is connected to the electric control valve (12) so as to supply electricity to the electric control valve (12), and a first switch (6) arranged on the first current loop (18); when a parking control handle (5) is pulled up, the first switch (6) is driven to be switched on, so that the electric control valve (12) obtains electricity, and the brake oil-supply pipeline is closed; when the parking control handle (5) is pressed down, the first switch (6) is driven to be switched off, so that the electric control valve (12) loses electricity, and the brake oil-supply pipeline is opened. According to the parking assisting device disclosed by the invention, the control force of the parking control handle does not need to be too large, so that the parking property of the vehicle brake system is more reliable, and the handling comfort can be improved.

Description

technical field [0001] The present invention relates to the technical field of vehicle braking, in particular to a parking assist device, a vehicle braking system including the parking assist device, and a vehicle including the vehicle braking system. Background technique [0002] The parking brake system is a must-have independent system for the whole vehicle, mainly used to ensure that the vehicle remains stationary under any design load state, whether it is a level road or a certain slope, sometimes it also has a certain emergency braking function. However, for off-road vehicles or trucks, due to the complex driving conditions or heavy loads, under the same conditions, if the vehicle needs to be parked reliably, it is necessary to apply greater steering force and increase the labor intensity of the driver. , is not conducive to driving safety. [0003] At present, there are two general methods in the industry to solve the above problems: [0004] First, a purely mechan...

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Problems solved by technology

[0004] First, a purely mechanical structure parking device is adopted, by adjusting the specifications of the brake, optimizing the layout of the cable ("T-shape" or "V-shape" layout), improving mechanical efficiency, etc., but sometimes it is affected by space layout, man-machine manipulation or Due to other reasons, it still cannot effectively reduce the control force and improve the control comfort;

[0005] Second, the electronic parking brake system is adopted. For the electronic parking brake system, although the handling comfort has been greatly improved, due to the complexity of the mechanism, it is necessary to increase the motor, redesign the calipers, brake discs, and even the suspension system, etc. , the cost is expensive (the cost increases by 1,500 yuan / car), and it must go through a complicated calibration process (the calibration cost is not less than 1 million yuan / car), and it needs to be controlled by a separate ECU or an ECU integrated with ABS / ESP Realize the parking function

Moreover, the technology is still basically monopolized by foreign companies, which is not conducive to the development of China's auto industry

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