Fall arrest device

Patent metadata

Field	Value
Publication number	US-10478646-B2
Application number	US-201816195490-A
Country	US
Kind code	B2
Filing date	Nov 19, 2018
Priority date	Sep 20, 2017
Publication date	Nov 19, 2019
Grant date	Nov 19, 2019

Abstract

A fall arrest device includes a bracket having first and second side panels, a rotating member rotatably mounted to the bracket, a safety belt wound around the rotating member, a brake wheel engaged with the rotating member and having a groove, a brake block pivotally connected to the brake wheel and located between an inner surface of the brake wheel and an outer surface of the first side panel, and a restoring spring. A stopper is disposed on the outer surface of the first side panel. In this way, the groove could accommodate a part of a body of the restoring spring, preventing the brake block from propelling away from a surface of the brake wheel by the restoring spring, preventing the brake block from rubbing against the first side panel.

First claim

What is claimed is:

1. A fall arrest device, comprising:
a bracket which has a first side panel and second side panel facing each other, wherein a stopper is disposed on said first side panel;
a rotating member rotatably mounted between said first side panel and said second side panel of said bracket;
a safety belt which is wound around said rotating member and is located between said first side panel and said second side panel, wherein the safety belt is pulled to drive said rotating member to rotate;
a brake wheel engaged with said rotating member;
a brake block pivotally mounted to said brake wheel, wherein said brake block has a stop portion; said stop portion of said brake block is forced by a centrifugal force generated during a rotation of said brake wheel to pivot from a restoring position to an extended position where said brake block abuts against said stopper to restrict a rotation of said rotating member; and
a restoring spring which is connected between said brake block and said brake wheel, and is adapted to urge said brake block to move toward said restoring position;
wherein said brake wheel has a surface, and said surface is recessed to form a groove; when said brake block is in said restoring position, said restoring spring is located in an orthographic projection area of said groove.

2. The fall arrest device as claimed in claim 1 , wherein said brake wheel comprises a fixing rod; an end of said fixing rod is engaged with a surface of said groove; an end of said restoring spring is connected to said brake block and is located adjacent to said stop portion, and another end of said restoring spring terminates in a ring fitting around said fixing rod.

3. The fall arrest device as claimed in claim 2 , wherein said ring of said restoring spring is disposed between said surface of said brake wheel and said surface of said groove.

4. The fall arrest device as claimed in claim 1 , wherein said restoring spring has a body partially protruding into said groove.

5. The fall arrest device as claimed in claim 1 , wherein an end of said restoring spring is connected to said brake block adjacent to said stop portion.

6. The fall arrest device as claimed in claim 1 , wherein said first side panel has an outer surface facing away from said second side panel; said stopper is disposed on said outer surface of said first side panel; said brake wheel has an inner surface facing said outer surface of said first side panel, and said inner surface has said surface of said brake wheel.

7. The fall arrest device as claimed in claim 6 , wherein a pivot axle is disposed on said inner surface of said brake wheel; said brake block has a pivot hole and a bearing portion, wherein said pivot hole fits around said pivot axle; said bearing portion and said stop portion are respectively disposed on two opposite sides relative to said pivot hole; said bearing portion moves along a moving path as said brake wheel rotates; said stopper is located in said moving path of said bearing portion; when said bearing portion passes through said stopper, said bearing portion is pushed by said stopper to pivot said brake block.

8. The fall arrest device as claimed in claim 7 , wherein said brake wheel has an outer periphery; an outer edge of said bearing portion protrudes away from said pivot hole and beyond said outer periphery of said brake wheel; when said bearing portion passes through said stopper, said outer edge of said bearing portion passes therethrough and abuts against said stopper.

9. The fall arrest device as claimed in claim 6 , wherein said first side panel of said bracket has a perforation; a protruding shaft is disposed on said inner surface of said brake wheel; said protruding shaft comprises a first segment and a second segment connected to each other; said first segment passes through said perforation of said first side panel and is engaged with said rotating member; an outer diameter of said second segment is gradually increased from the first segment toward said inner surface.

10. The fall arrest device as claimed in claim 1 , wherein when said brake block is located in said extended position, said restoring spring is located in the orthographic projection area of said groove.

Assignees

• Yoke Ind Corp

Inventors

• Sun Eason

Classifications

• A62B1/10

  mechanically operated · CPC title

• A62B35/0093 Primary

  Fall arrest reel devices · CPC title