A ratchet type parking mechanism suitable for hand brake

Abstract

The invention provides a ratchet wheel type parking mechanism applicable to a hand brake apparatus. The ratchet wheel type parking mechanism comprises a parking handle, a cover plate, a transmission reset mechanism, a brake handle, a parking locking tooth and a locking plate, wherein the parking handle is arranged at the top of an upper part; the cover plate is arranged at the lower side of the parking handle; the transmission reset mechanism comprises a locking tooth rotating shaft and a return spring; the locking tooth rotating shaft comprises a rotating shaft rod, an upper rotating platform, a shaft shoulder and a lower rotating platform; the return spring is vertically arranged, and the rotating shaft rod penetrates through a cavity in the middle of the return spring; the brake handle comprises a handle, a transmission reset mechanism mounting rack and a handle connecting plate; and a transmission reset mechanism mounting cavity penetrating through the transmission reset mechanism mounting rack vertically is formed in the transmission reset mechanism mounting rack; the parking locking tooth is arranged at the lower part of the transmission reset mechanism mounting rack; a locking tooth rotating shaft hole is formed in the middle of the large end of the parking locking tooth; and a hook pawl is arranged at the tail of the small end of the parking locking tooth; and the locking plate is arranged at the lower part of the handle connecting plate; and a ratchet surface is formed at one end of the locking plate. The ratchet wheel type parking mechanism has the characteristics of simple and reasonable structure, convenience in operation and use, good parking stability and strong locking adjustability.

Description

technical field [0001] The invention relates to brake devices for electric vehicles, electric tricycles, motorcycles, etc., in particular to a handle hand brake device with a parking mechanism installed on the handle of the vehicle, in particular to a ratchet type parking mechanism suitable for the hand brake device. Background technique [0002] The transmission handbrake brake device usually does not have a brake parking mechanism. Usually, the parking side bracket is used to complete the parking. When the vehicle is parked smoothly, the drive can be turned off and the parking can be completed. However, when parking on a slope road, due to the lack of effective tires The parking mechanism, especially the front wheels of the vehicle, is prone to spinning, resulting in unstable parking, causing the vehicle to slide, and even slipping or rolling over, causing damage to the vehicle and safety accidents. [0003] For existing electric tricycles or all-terrain vehicle lights, mo...

AI Technical Summary

Problems solved by technology

[0002] The transmission handbrake brake device usually does not have a brake parking mechanism. Usually, the parking side bracket is used to complete the parking. When the vehicle is parked smoothly, the drive can be turned off and the parking can be completed. However, when parking on a slope road, due to the lack of effective tires The parking mechanism, especially the front wheels of the vehicle, is prone to spinning, resulting in unstable parking, causing the vehicle to slide, and even slipping or rolling over, causing damage to the vehicle and safety accidents

[0003] For existing electric tricycles or all-terrain vehicle lights, most of them adopt the handle and rod type parking method, but their cost is relatively high, their structure is relatively complicated, and they are easily restricted by various conditions; if a parking mechanism is added to the handbrake Usually adopt clamp-type structure or bolt-type structure, its existence limit is fixed single, does not have the compensation function of certain range after friction pair wearing and tearing; As the patent document of patent No. 200420033657. 》, which adopts the structure of the latch, which uses a push-type latch installed on the brake handle. The latch is reset by a pressure spring, and a stopper is installed on the main brake pump body of the handle. When the brake device is pulled to a certain stroke, press the latch, and the latch is ring-shaped The groove is stuck on the bayonet of the block to form the brake device to keep in the braking state. Due to the limitation of the assembly position of the brake device, it can only be designed with a single gear structure, and the direction of the reset force of the latch is the same as the force of the latch lock brake handle. The direction is vertical in space and not on the same plane, so there are problems such as poor operation flexibility, easy loosening of the latch, easy damage and unreliable locking

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