US 12,214,660 B2
Device and method for preventing mistakenly stepping on an accelerator by converting acceleration into braking
Zhiguang Liu, Hunan (CN)
Appl. No. 17/928,203
Filed by Zhiguang Liu, Hunan (CN)
PCT Filed Aug. 2, 2021, PCT No. PCT/CN2021/110000
§ 371(c)(1), (2) Date Nov. 28, 2022,
PCT Pub. No. WO2022/028355, PCT Pub. Date Feb. 10, 2022.
Claims priority of application No. 202010770598.8 (CN), filed on Aug. 4, 2020.
Prior Publication US 2023/0249547 A1, Aug. 10, 2023
Int. Cl. B60K 26/02 (2006.01); B60K 26/04 (2006.01); B60K 28/02 (2006.01); B60T 7/12 (2006.01)
CPC B60K 28/02 (2013.01) [B60K 26/02 (2013.01); B60K 26/04 (2013.01); B60T 7/12 (2013.01); B60K 2026/043 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A device for preventing mistakenly stepping on an accelerator by converting acceleration into braking, comprising an accelerator push rod mechanism connected to an accelerator pedal wherein the device further comprises an outer housing in which a worm gear and worm mechanism composed of a worm and a worm gear is mounted to drive an inner housing that can only move axially; and the worm gear is mounted on the inner housing; the accelerator pedal push rod mechanism comprises an upper push rod, a middle push rod and a lower push rod; an upper part of the worm is provided with a centrifugal disc; a pair of pawl and iron interlocks is hinged to the centrifugal disc through a vertical shaft; a return torsion spring is provided between a pawl and iron interlock and the centrifugal disc; an outer edge of the middle push rod is provided with a ratchet wheel that can correspondingly coordinate with pawls; an upper part of the middle push rod is connected to one end of the upper push rod through a push rod linkage; a lower part of the middle push rod is connected to an upper part of the lower push rod through a push rod connecting mechanism; the lower push rod is connected to a slide integrated with a bottom of the outer housing;
when stepping on the accelerator pedal during normal driving or for overtaking, the stepping force and speed and acceleration cannot trigger jointing of the pawls and the ratchet wheel, and a downward force on the upper push rod is transferred to the inner housing and the lower push rod through the middle push rod and the worm gear and worm mechanism for going down together, when mistakenly stepping on the accelerator pedal in an emergency, the stepping force and speed and acceleration make the centrifugal disc connected to the worm rotate.