JPH025551B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a ratchet type fastener, and more particularly, to an improvement in the method of using a ratchet type fastener having a sliding plate on the underside of its main body.

Conventionally, objects to be tightened, such as cargo such as trucks, have been tied together with belts, and various types of fasteners are used to tighten the belts. Moreover, this is a method that can be used to tighten the belt without damaging the object to be tightened, which is applicable when using a belt tightener having a sliding plate on the lower side of the tightener body.

As shown in FIGS. 1 and 2, for example, a ratchet type belt tightening tool is constructed by attaching ratchet gears 2, 2 to both ends of half-split round bars 1, 1 to form a reel 3, and forming a reel 3 at both ends of the reel 3. The front ends of the side plates 5, 5 of the main body 4 and the bases of the side plates 7, 7 of the lever 6 are rotatably fitted into the parts, and the main body 4 has elongated holes 8, 8 in the side plates 5, 5. An engaging plate 10 having engaging claws 9, 9 on both side edges for engaging with the ratchet gears 2, 2 is slidably provided along the elongated holes 8, 8, and a spring 11 plywood 10
is always urged in the direction of engagement with the ratchet gears 2, 2, and the shaft 12 is fixed to the rear end of the main body between the side plates 5, 5, and the lever 6 is also provided with elongated holes 13, 13 in its side plates 7, 7. An engaging plate 15 is bored and has engaging claws 14, 14 on both side edges for engaging with the ratchet gears 2, 2. An engaging plate 15 is slidably provided along the elongated holes 13, 13, and a spring 16 holds the engaging plate 15. is always biased in the direction of engagement with the ratchet gears 2, 2. Then, the other end of the belt 17 with one end locked to a fixed object etc. is sewn to the shaft 12, and another belt 18 with one end locked to a fixed object etc.
The other end can be inserted between the half-split round bars 1 and 1 and wound around the outer circumference of the bar.

When the lever 6 is rotated counterclockwise in the figure, the engaging claws 14 engage the ratchet gears 2, 2, and the reel 3 rotates counterclockwise together with the lever 6. Next, when the lever 6 is rotated clockwise, the ratchet gears 2, 2 engage with the engaging pawl 9 of the main body 4, the rotation of the reel 3 is blocked, and only the lever 6 is rotated clockwise.

Therefore, when the lever 6 is repeatedly rotated back and forth, the reel 3 is intermittently rotated counterclockwise and the belt 18 is tightened. By putting your finger on the through hole 19 of the engagement plate 15 of the lever 6 and pulling it while rotating the lever 6 approximately half a turn counterclockwise, the cam formed on the outer periphery of the base of the side plates 7, 7 of the lever 6 can be removed. The edge 20 is operated so as to push back the engagement plate 10 of the main body 4, the engagement claws 9, 9 are disengaged from the ratchet gears 2, 2, and the tightening of the belt 18 can be released.

However, in the case of a fastener having the above-mentioned structure, if the cargo is flexible or made of a material that is easily damaged, the part that the fastener contacts often gets damaged. Therefore, it has been proposed to provide a fastener with a sliding plate. That is, the sliding plate 21 serves as a cushion that comes into contact with the cargo, and also allows the fastener to slide smoothly along the surface of the cargo, eliminating the risk of damaging the cargo. Note that this sliding plate 21 is made of a plate made of polyethylene resin or the like having a small friction coefficient and spring elasticity, and the rear side edges of the plate are bent upward to wrap around the main body 4 to form side plates 22, 22. The shaft 12 is passed through holes bored in the side plates 22, 22, and is integrally fixed to the main body 4. Further, the front part of the sliding plate 21 is widened laterally, and a long hole 23 is bored in the center of the front end, and the belt 18 pulled out from the reel 3 extends through this long hole.

However, it has been found that even if the fastener is provided with a sliding plate, the fastener still cannot slide sufficiently smoothly on the load surface.

In view of this point, the present invention provides a method of using a belt tightening tool that can fully slide, in which a sliding sheet is interposed between the sliding plate on the lower side of the tightening tool body and the object to be tightened, such as a load. It is characterized by tightening the belt. In FIGS. 1 and 2, numeral 30 indicates this sliding sheet, which is, for example, a polyethylene resin sheet. Note that 31 is cargo.

According to the above, the fastener to which the sliding plate is attached slides well on the sliding sheet on the cargo, and the intended purpose of preventing damage to the cargo can be achieved.

[Brief explanation of drawings]

1 and 2 are views for explaining how to use the belt tightening tool of the present invention, FIG. 1 is a longitudinal sectional front view, and FIG. 2 is a perspective view, respectively. 2... Ratchet gear, 3... Reel, 4...
Main body, 6... Lever, 9, 14... Engaging claw, 1
1, 16... Spring, 17, 18... Belt, 21
... Sliding plate, 22 ... Side plate, 23 ... Long hole, 30
...Sliding sheet, 31...Object to be tightened.

Claims (1)

[Claims] 1. By repeatedly rotating the lever back and forth with respect to the main body, the claw of the lever engages with a ratchet gear at the end of the belt winding reel to wind the belt onto the reel, and there is a sliding plate on the underside of the main body. When tightening a to-be-tightened object with the belt using a belt-tightening tool, the belt is tightened by interposing a sliding sheet between the sliding plate of the belt-tightening tool and the object to be fastened. How to use fasteners. 2. A belt tightening tool in which the claw of the lever engages with a ratchet gear at the end of a belt winding reel to wind the belt onto the reel by repeatedly rotating the lever back and forth with respect to the main body, and is equipped with a sliding plate on the underside of the main body. However, the main body and the lever are rotatably fitted to both ends of a belt winding reel having a ratchet gear at both ends, and the main body and the lever are each urged by a spring in the direction of engaging the ratchet gear. A pawl is provided, and by repeatedly rotating the lever back and forth with respect to the main body, the pawl of the lever engages with the ratchet gear to wind the belt onto the reel, and the pawl of the main body prevents rotation of the ratchet gear in the direction of belt withdrawal. A belt other than the belt is sewn to a shaft provided at the end of the main body, and a sliding plate is attached to the bottom of the main body. 1st
How to use the belt tightening tool described in section. 3. The method of using a belt tightening tool according to claim 1, wherein the sliding sheet interposed between the sliding plate of the belt tightening tool and the object to be fastened is a polyethylene resin sheet.