Fall protection device

Patent metadata

Field	Value
Publication number	US-11090517-B2
Application number	US-201816135321-A
Country	US
Kind code	B2
Filing date	Sep 19, 2018
Priority date	Sep 20, 2017
Publication date	Aug 17, 2021
Grant date	Aug 17, 2021

Abstract

A fall protection device includes a frame, a rolling member, a safety belt, a braking plate, a braking part, and a restoring spring. The frame has a first side plate. An outer side surface of the first side plate is provided with a blocking part. A rolling member is rotatably disposed on the frame. A safety belt is wound around the rolling member. A braking plate is engaged to the rolling member and has an inner side surface, which faces the outer side surface. The braking part is pivotally disposed on the braking plate and is located between the inner side surface and the outer side surface, whereby to ensure that the braking part at a braking position could be abutting against the blocking part.

First claim

What is claimed is:

1. A fall protection device, comprising:
a frame including a first side plate and a second side plate facing to the first side plate, wherein the first side plate has an outer side surface that does not face the second side plate, and the outer side surface is disposed with a blocking part;
a rolling member rotatably disposed between the first side plate and the second side plate and including a shaft and a rolling drum, wherein the rolling drum is provided on the shaft, wherein the shaft synchronously rotates with the rolling drum;
a safety belt wound around the rolling drum of the rolling member and located between the first side plate and the second side plate, wherein the safety belt is pulled and forces the rolling member to rotate;
a braking plate engaged to the rolling member and including an inner side surface facing the outer side surface of the first side plate, and the braking plate coaxially rotating with the shaft;
a braking part pivotally disposed on the inner side surface of the braking plate and located between the inner side surface of the braking plate and the outer side surface of the first side plate; the braking part including a blocking portion, wherein the blocking portion of the braking part is pivoted outward to a braking position from a non-braking position to attach the blocking part due to a centrifugal force produced by a rotation of the braking plate to restrict the rotation of the rolling member; and
a restoring spring connected between the braking part and the braking plate and adapted to force the braking part to move toward the non-braking position;
wherein the inner side surface of the braking plate is disposed with a fixing pillar, and an end of the restoring spring is connected to the braking part and is located beside the blocking portion, while another end includes a ring fitted around the fixing pillar; and
wherein the inner side surface has a depression; the restoring spring has a body part, and a portion of the body part protrudes into the depression.

2. The fall protection device as claimed in claim 1 , wherein the inner side surface of the braking plate is provided with a pivot, and the braking part has a pivoting hole fitted around the pivot; a width of the pivot is less than a width of the pivoting hole.

3. The fall protection device as claimed in claim 1 , wherein the inner side surface has a surface, and the depression is formed by recessed the surface; an end of the fixing pillar is connected to a depression-surface of the depression; the ring of the restoring spring is located between the surface and the depression-surface.

4. The fall protection device as claimed in claim 3 , wherein as the braking part is at the non-braking position, the restoring spring is located within an orthographic range of the depression.

5. The fall protection device as claimed in claim 1 , wherein the first side plate of the frame has a perforation; the inner side surface of the braking plate is provided with a protruding portion, and the protruding portion includes a first part and a second part connected with the first part; the first part passes through the perforation of the first side plate and is connected to the rolling member, and a width of the second part is gradually expanding from the first part to the inner side surface.

6. The fall protection device as claimed in claim 2 , wherein the braking part has a propped portion; the propped portion and the blocking portion are respectively located at two sides of the pivoting hole, and two sides thereof are opposite to each other; the propped portion follows the rotation of the braking plate to move along a moving pathway; the blocking part is located at the moving pathway of the propped portion; when the propped portion passes by the blocking part and is propped by the blocking part that forces the braking part to be pivoted.

7. The fall protection device as claimed in claim 6 , wherein the braking plate has an outer circumference; an edge of the propped portion is oriented away from a direction toward the pivoting hole, and protrudes out of the outer circumference; when the propped portion passes by the blocking part, the edge passes and is abutting against the blocking part.

8. A fall protection device, comprising:
a frame including a first side plate and a second side plate facing to the first side plate, wherein the first side plate has an outer side surface that does not face the second side plate, and the outer side surface is disposed with a blocking part;
a rolling member rotatably disposed between the first side plate and the second side plate and including a shaft and a rolling drum, wherein the rolling drum is provided on the shaft, wherein the shaft simultaneously rotates with the rolling drum;
a safety belt wound around the rolling drum of the rolling member and located between the first side plate and the second side plate, wherein the safety belt is pulled and forces the rolling member to rotate;
a braking plate engaged to the rolling member and including an inner side surface facing the outer side surface of the first side plate, and the braking plate coaxially rotating with the shaft;
a braking part pivotally disposed on the inner side surface of the braking plate and located between the inner side surface of the braking plate and the outer side surface of the first side plate; the braking part including a blocking portion, wherein the blocking portion of the braking part is pivoted outward to a braking position from a non-braking position to attach the blocking part due to a centrifugal force produced by rotation of the braking plate to restrict the rotation of the rolling member; and
a restoring spring connected between the braking part and the braking plate and adapted to force the braking part to move toward the non-braking position, wherein the restoring spring has a body part and two end portions; the two end portions of the restoring spring are respectively connected to the braking part and the braking plate;
wherein the inner side surface of the braking plate has a depression, and a portion of the body part of the restoring spring protrudes into the depression.

Assignees

• Yoke Ind Corp

Inventors

• Hung Wei-Chieh
• Wang Jyu-Yi
• Sun Eason

Classifications

• A62B35/0093 Primary

  Fall arrest reel devices · CPC title

• A62B1/10

  mechanically operated · CPC title