Vehicle ramp device

Patent metadata

Field	Value
Publication number	US-11912236-B2
Application number	US-202017078791-A
Country	US
Kind code	B2
Filing date	Oct 23, 2020
Priority date	Oct 24, 2019
Publication date	Feb 27, 2024
Grant date	Feb 27, 2024

Abstract

A vehicle ramp device includes a ramp plate deployed at a lower end of a door opening, a moving body moving in a deploying or retracting direction of the ramp plate, a support arm rotatably connected to the ramp plate and the moving body to allow a rear end portion of the ramp plate to be lifted up when the ramp plate is deployed, a fall prevention member rotatably connected to the ramp plate, an urging member urging the fall prevention member to make it stand on a side end portion of the ramp plate, and a pressing member abutting against the fall prevention member that moves downward together with the ramp plate having been lifted up based on a rotation of the support arm and pressing the fall prevention member to bend it on a top surface of the ramp plate against an urging force of the urging member.

First claim

The invention claimed is:

1. A vehicle ramp device comprising:
a ramp plate that is deployed at a lower end of a door opening;
a moving body that moves in a deploying or retracting direction of the ramp plate;
a support arm that is rotatably connected to the ramp plate and is rotatably connected to the moving body to allow a rear end portion of the ramp plate to be lifted up in a state where the ramp plate is deployed;
a fall prevention member that is rotatably connected to the ramp plate;
an urging member that urges the fall prevention member to make the fall prevention member stand on a side end portion of the ramp plate; and
a pressing member that abuts against and presses the fall prevention member to bend the fall prevention member on a top surface of the ramp plate against an urging force of the urging member when the ramp plate moves downward based on a rotation of the support arm.

2. The vehicle ramp device according to claim 1 , wherein
the fall prevention member includes an abutment surface against the pressing member, the abutment surface facing a bottom of the ramp plate when the fall prevention member stands and facing a side of the ramp plate when the fall prevention member is bent.

3. The vehicle ramp device according to claim 2 , wherein
the fall prevention member includes
a first flat plate portion having the abutment surface, and
a second flat plate portion extending in a direction intersecting the first flat plate portion.

4. The vehicle ramp device according to claim 3 , wherein
the fall prevention member is bent with the first flat plate portion along a side end surface of the ramp plate and the second flat plate portion along the top surface of the ramp plate.

5. The vehicle ramp device according to claim 2 , wherein
the pressing member has a curved surface that wraps around a side surface from a distal end portion projecting upward, and abuts against the fall prevention member.

6. The vehicle ramp device according to claim 1 , wherein
the ramp plate includes a hole portion that penetrates the side end portion of the ramp plate in a thickness direction, and
the pressing member abuts against the fall prevention member through the hole portion.

7. The vehicle ramp device according to claim 6 , wherein
the top surface of the ramp plate includes a groove portion that houses the fall prevention member that is standing, and the hole portion is formed in a bottom surface of the groove portion.

8. The vehicle ramp device according to claim 7 , wherein
the fall prevention member that is standing is supported by an inner wall surface of the groove portion.

9. The vehicle ramp device according to claim 1 , wherein the pressing member is provided integrally with the moving body.

Assignees

• Aisin Corp

Inventors

• Sato Eisuke

Classifications

• B60R3/00 Primary

  Arrangements of steps {or ladders facilitating access to or on the vehicle}, e.g. running-boards ({construction of steps for railway vehicles B61D23/00} ; ladders E06C) · CPC title

• A61G3/061

  using ramps · CPC title

• A61G3/067

  with compartment for horizontally storing the ramp or lift · CPC title

• B60R3/02 Primary

  Retractable steps {or ladders, e.g. movable under shock (B60R3/005 takes precedence)} · CPC title