Brake device and automatic driving vehicle using the same

Patent metadata

Field	Value
Publication number	US-10583818-B2
Application number	US-201815943684-A
Country	US
Kind code	B2
Filing date	Apr 2, 2018
Priority date	Sep 5, 2017
Publication date	Mar 10, 2020
Grant date	Mar 10, 2020

Abstract

A brake device and an automatic driving vehicle using the same are provided. The brake device includes an electrically controlled brake assembly, a mechanically controlled brake assembly and a shaft. The electrically controlled brake assembly has a main body and a brake control link. The shaft is connected between the electrically controlled brake assembly and the mechanically controlled brake assembly. The mechanically controlled brake assembly includes a pedal, an elbow, a brake link group and a brake pump. The first end is connected to the pedal, and the fulcrum is between the first end and the second end and is located close to the second end. The brake link group is connected between the elbow and the brake control link. The brake pump has an adjustable rod, and one link of the brake link group is connected to the adjustable rod.

First claim

What is claimed is:

1. A brake device adapted for an automatic driving vehicle, comprising:
an electrically controlled brake assembly comprising a main body and a brake control link;
a mechanically controlled brake assembly; and
a shaft, the mechanically controlled brake assembly is connected to the brake control link by the shaft;
wherein the mechanically controlled brake assembly comprises:
a pedal;
an elbow having a first end, a second end and a fulcrum, wherein the first end is connected to the pedal, the fulcrum is located between the first end and the second end and is close to the second end;
a brake link group connected between the second end of the elbow and the brake control link by the shaft; and
a brake pump having an adjustable rod, wherein one link of the brake link group is connected to the adjustable rod of the brake pump

wherein the main body comprises:
a fixing base;
an electrically controlled motor disposed on the fixing base;
a bearing housing disposed on a wing of the fixing base;
a first gear installed on the first axis rod and located between the electrically controlled motor and the bearing housing;
a second axis rod, wherein two ends of the second axis rod are fixed on opposite first and second side walls of the fixing base;
a second gear installed on the second axis rod and engaged with the first gear, wherein a surface of the second gear has a protruding portion, the brake control link has a guide rail portion, and the protruding portion is located in the guide rail portion; and
a bearing installed on the second axis rod close to the second gear.

2. The brake device according to claim 1 , further comprising a resistance scale disposed on the fixing base for measuring a linear displacement of the brake control link.

3. The brake device according to claim 1 , wherein the fixing base comprises:
the first side wall and the second side wall disposed along a vertical direction, wherein the second side wall has the wing extending horizontally;
a bottom plate extending horizontally from a bottom of the second side wall, wherein the first side wall is disposed on the bottom plate; and
a top plate connected between a top of the first side wall and a top of the second side wall.

4. The brake device according to claim 3 , wherein the bottom plate has an area greater than an area of the top plate.

5. The brake device according to claim 1 , wherein the brake link group comprises:
a first brake link having a third end and a fourth end, wherein the third end is connected to the second end of the elbow;
a second brake link having a fifth end and a sixth end, wherein the fifth end is connected to the fourth end of the first brake link, and the sixth end is installed on the shaft;
a third brake link having a seventh end and an eighth end, wherein the seventh end is installed on the shaft in a distance to the sixth end; and
a fourth brake link having a ninth end and a tenth end, wherein the ninth end is installed on the shaft in a distance to the seventh end, and the tenth end is connected to the brake control link.

6. An automatic driving vehicle, comprising:
a body having a plurality of seats and a steering wheel;
a central control unit disposed on the body; and
a brake device electrically connected to the central control unit, the brake device comprising an electrically controlled brake assembly that is disposed under the plurality of seats, a mechanically controlled brake assembly and a shaft, wherein the electrically controlled brake assembly comprises a main body and a brake control link, and the mechanically controlled brake assembly is connected to the brake control link by the shaft,
the mechanically controlled brake assembly comprising:
a pedal located under the steering wheel;
an elbow having a first end, a second end and a fulcrum, wherein the first end is connected to the pedal, the fulcrum is located between the first end and the second end and is close to the second end;
a brake link group connected between the second end of the elbow and the brake control link by the shaft; and
a brake pump having an adjustable rod, wherein one link of the brake link group is connected to the adjustable rod of the brake pump

wherein the main body comprises:
a fixing base;
an electrically controlled motor disposed on the fixing base;
a bearing housing disposed on a wing of the fixing base;
a first axis rod connected between the electrically controlled motor and the bearing housing;
a first gear installed on the first axis rod and located between the electrically controlled motor and the bearing housing;
a second axis rod, wherein two ends of the second axis rod are fixed on opposite first and second side walls of the fixing base;
a second gear installed on the second axis rod and engaged with the first gear, wherein a surface of the second gear has a protruding portion, the brake control link has a guide rail portion, and the protruding portion is located in the guide rail portion; and
a bearing installed on the second axis rod close to the second gear.

7. The automatic driving vehicle according to claim 6 , wherein when the electrically controlled brake assembly is in operation, the protruding portion is located in one end of the guide rail portion; when the electrically controlled brake assembly fails, an external force applied to the pedal drives the elbow and the brake link group to move, and the protruding portion moves from the end of the guide rail portion to the other end of the guide rail portion.

8. The automatic driving vehicle according to claim 6 , wherein the brake device further comprises a resistance scale disposed on the fixing base for measuring a linear displacement of the brake control link.

9. The automatic driving vehicle according to claim 6 , wherein the fixing base comprises:
the first side wall and the second side wall disposed along a vertical direction, wherein the second side wall has the wing extending horizontally;
a bottom plate extending horizontally from a bottom of the second side wall, wherein the first side wall is disposed on the bottom plate; and
a top plate connected between a top of the first side wall and a top of the second side wall.

10. The automatic driving vehicle according to claim 6 , wherein the brake link group comprises:
a first brake link having a third end and a fourth end, wherein the first brake link extends from under the plurality of seats to under the steering wheel for the third end to be connected to the second end of the elbow;
a second brake link having a fifth end and a sixth end, wherein the fifth end is connected to the fourth end of the first brake link, and the sixth end is installed on the shaft;
a third brake link having a seventh end and an eighth end, wherein the seventh end is installed on the shaft in a distance to the sixth end; and
a fourth brake link having a ninth end and a tenth end, wherein the ninth end is installed on the shaft in a distance to the seventh end, and the tenth end is connected to the brake control link.

Assignees

• Acer Inc

Inventors

• Chang Kuo-Hui
• Chuang Shao-Chi
• Lee Wen-Shu

Classifications

• B60T13/66

  Electrical control in fluid-pressure brake systems · CPC title

• B60T11/18

  Connection thereof to initiating means · CPC title

• B60T11/102 Primary

  in combination with mechanical elements · CPC title

• B60T2270/404

  Brake-by-wire or X-by-wire failsafe · CPC title

• B60T13/746

  and mechanical transmission of the braking action · CPC title