Automatic parking brake device of automobile

Abstract

The invention discloses an automatic parking brake device of an automobile. The automatic parking brake device comprises a brake (31), a pull cable (32) and a parking brake lever (36), wherein the parking brake lever (36) is fixedly connected with a rotatable disk; one end of the pull cable (32) is fixed on the rotatable disk, and the other end of the pull cable (32) is connected with the brake (31); the automatic parking brake device of the automobile further comprises a speed reduction gear (33), a driven gear (34) and a motor (38); the motor (38) is connected with the speed reduction gear (33) and is used for driving the speed reduction gear (33) to rotate; the driven gear (34) is meshed with the speed reduction gear (33), and is configured to be connected to the rotatable disk. By adopting the automatic parking brake device disclosed by the invention, the automobile is better in driving experience and higher in driving safety.

Description

technical field [0001] The invention relates to the technical field of motor vehicles, in particular to an automatic hand brake device for motor vehicles. Background technique [0002] Car hand brakes, also known as auxiliary brakes, are generally used when parking, especially when parking on slopes, to prevent cars from sliding uncontrollably and avoid traffic accidents. At present, most cars and light vehicles are equipped with hand brakes, which generally act on the rear wheels, and usually adopt steel wires to be connected to the rear brakes to brake the car. [0003] For example attached figure 1 A common handbrake device in the prior art is provided, which mainly includes a brake 21, a steel wire 22, a rotating disk with a rotating shaft 23, a ratchet 24, a pawl 25, a handbrake lever 26 and a handbrake button 27. The handbrake lever 26 is connected and fixed with the rotating disc, and one end of the steel wire 22 is fixed on the rotating disc, and the other end is c...

AI Technical Summary

Problems solved by technology

[0004] However, in order to make the handbrake device play the role of auxiliary braking, in addition to normal driving behavior (such as starting, parking), the driver needs to operate the handbrake lever additionally, such as pulling up the handbrake lever, pressing the handbrake button, pushing down, etc. Handbrake lever, etc., and in order to ensure safety, these operations are frequent, and operations related to the handbrake lever are required when the car starts, stops, and waits for a green light

In addition, when pulling up the handbrake lever, it is necessary to overcome the restoring force of the spring and the resistance of the steel wire, so this operation is laborious and affects the driving experience

[0005] Further, since whether to use the auxiliary brake depends on the driver's voluntary operation, it is possible that the driver forgets out of negligence or deliberately does not pull the handbrake or does not release the handbrake out of trouble. Failure to pull the handbrake will cause the car to roll, Endangering safety, driving without releasing the handbrake will cause brake wear and damage to the vehicle

Therefore, the existing hand brake device does not provide sufficient driving safety due to the convenience of operation.

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