Belt reel assembly for fastening goods on a truck

• US 6,880,810 B1
• Filed: 10/14/2003
• Issued: 04/19/2005
• Est. Priority Date: 10/14/2003
• Status: Expired due to Term

• Current Assignee: Ratchet Company Limited
• Original Assignee: Ratchet Company Limited
• Inventors: Hu, Yu Fang
• Primary Examiner(s): MARCELO, EMMANUEL MONSAYAC
• Application Number:
  US10/684,193
• Publication Number:
  US 20050087730A1
• Time in Patent Office: 553 Days
• Field of Search: 254/217, 254/218, 254/223, 24/70.R, 24/70.ST, 24/69.ST, 24/69.CT
• US Class Current: 254/218
• CPC Class Codes: B60P 7/083 Tensioning by repetetive movement of an actuating member
• CPC Class Codes: Y10T 24/2113 Strap tighteners
• CPC Class Codes: Y10T 24/2117 Strap tighteners

Abstract

A belt reel for fastening goods on a truck includes an axle extending through a main frame and a lever to pivotally mount the main frame and the lever to each other. The axle includes two opposite ends each having a ratchet wheel mounted thereto between the main frame and the lever and rotated with the axle. A slot is diametrically defined in the axle for allowing a belt extending through the axle. The main frame has a stop plate slidably mounted therein and selectively engaged to the ratchet, and the lever has a pawl slidably mounted therein. The pawl is engaged to the ratchet for driving the axle to reel the belt and separated from the ratchet for releasing the strain of the strained belt.

Claims

1. A belt reel for fastening goods on a truck, comprising an axle extending through a main frame and a lever to pivotally mount the main frame and the lever to each other, the axle having two opposite ends each having a ratchet wheel mounted thereto between the main frame and the lever and rotated with the axle, each ratchet wheel having a series of teeth radially extending therefrom, a slot diametrically defined in the axle for allowing a belt extending through the axle, the main frame including a stop plate slidably mounted therein and a spring compressively mounted between the main frame and the stop plate so that the stop plate is engaged to the two ratchet wheels due to a restitution force of the spring, the lever including a pawl slidably mounted therein and a resilient member mounted between the lever and the pawl so that the pawl is selective engaged to the two ratchet wheels due to a restitution force of the resilient member, the lever including a pivot portion having two opposite sides each having a convex portion extending from the lever and corresponding to the two opposite sides of the stop plate, the main frame includes a pivot end having two opposite sides each sequentially having a concave portion defined in the main frame, a stopper extending from the main frame, a groove defined in the main frame, an indentation defined in the main frame and a connecting portion formed between the groove and the indentation, the groove including a first side formed adjacent to the stopper and a second side formed adjacent to the connecting portion, the convex portion backward pushing the stop plate to make the stop plate disengaged from the ratchet wheels when the pawl abuts the second side of the groove, the convex portion backward pushing the stop plate to make the stop plate disengaged from the ratchet wheels and the pawl disengaged from the ratchet wheels when the pawl is partially received in the indentation;

wherein the improvement comprises;

two plates respectively pivotally mounted to two opposite sides of the main frame, each plate having a cam portion extending therefrom to the groove, the cam portion being tapered and having a first guide side and a second guide side, the cam portion making the pawl moved over the series of teeth of each of the ratchet wheels, each plate being positioned when the pawl is moved over the cam portion, the pawl moved along the first guide side when the pawl is moved within the groove toward the second side of the groove, the pawl firstly clamped between one tooth of the each of the ratchet wheels and the cam portion and secondarily moved over the cam portion along the second guide side when the pawl is moved within the groove toward the first side of the groove due to a reverse ratchet; and

a protrusion extending from each of the connecting portion toward the stopper, the protrusion extending through the pawl when the pawl is moved toward the second side of the groove and abuts the protrusion that guides the pawl to the indentation.

2. The belt reel as claimed in claim 1, wherein each plate comprises a first stopper and a second stopper respectively extending therefrom opposite to the cam portion and the stop place is located between the first stopper and the second stopper to prevent the plate from being overly rotated and selectively hold the plate in place when the pawl is moved over the cam portion.

3. The belt reel as claimed in claim 2, wherein the main frame comprises two arc slot respectively defined in two opposite sides of the main frame near the axle, and each plate comprises a stub laterally extending therefrom and slidably received in a corresponding one of the two arc in the main frame to prevent the plate from being overly rotated and selectively hold the plate in place when the pawl is moved over the cam portion.

4. The belt reel as claimed in claim 3, wherein the pawl comprises a cutout defined therein for allowing the protrusion extending through the pawl.

5. The belt reel as claimed in claim 3, wherein the pawl comprises an opening defined therein for allowing the protrusion extending through the pawl.

6. The belt reel as claimed in claim 2, wherein the two plates are respectively mounted to two opposite ends of the axle and the main frame comprises two arc slot respectively defined in two opposite sides of the main frame near the axle, a curvature of each of the arc slots concentrically corresponding to the axle, each plate including a stub laterally extending therefrom and slidably received in a corresponding one of the two arc in the main frame to prevent the plate from being overly rotated and selectively hold the plate in place when the pawl is moved over the cam portion.

7. The belt reel as claimed in claim 6, wherein the pawl comprises a cutout defined therein for allowing the protrusion extending through the pawl.

8. The belt reel as claimed in claim 6, wherein the pawl comprises an opening defined therein for allowing the protrusion extending through the pawl.

9. The belt reel as claimed in claim 1, wherein the main frame comprises two arc slot respectively defined in two opposite sides of the main frame near the axle, and each plate comprises a stub laterally extending therefrom and slidably received in a corresponding one of the two arc in the main frame to prevent the plate from being overly rotated and selectively hold the plate in place when the pawl is moved over the cam portion.

10. The belt reel as claimed in claim 1, wherein the two plates are respectively mounted to two opposite ends of the axle and the main frame comprises two arc slot respectively defined in two opposite sides of the main frame near the axle, a curvature of each of the arc slots concentrically corresponding to the axle, each plate including a stub laterally extending therefrom and slidably received in a corresponding one of the two arc in the main frame to prevent the plate from being overly rotated and selectively hold the plate in place when the pawl is moved over the cam portion.