JPH09273568A - Ratchet device - Google Patents

Abstract

In a conventional ratchet device, when a meshing release lever provided on a ratchet tooth that meshes with a ratchet wheel is caught on a tree branch or the like and tilted, the ratchet wheel and the ratchet tooth mesh with each other. There was a drawback that it would be canceled. The present invention eliminates such drawbacks. In the ratchet device of the present invention, the operating means for ratchet teeth is composed of a ratchet lever and a release lever so that the ratchet lever and the release lever do not normally engage with each other. The ratchet lever has one of engaging members that are rotatably supported by a pivot pin and are engaged with each other, and the release lever is movable and rotatable through the slot in the pivot pin. One of the engaging members is engaged with the other when the release lever is moved relative to the ratchet lever. .

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ratchet device, and more particularly to a ratchet device of a rotating body for winding a belt for tightening an article such as a boat, canoe or surfboard on a carrier mounted on a roof of a vehicle or the like. .

[0002]

2. Description of the Related Art FIG. 9 shows a conventional ratchet device.
Is a bearing fixed to the carrier bar 2 by a fastener 3 and 4
Is a winding drum rotatably supported by the bearing 1, 5 is a retaining band wound by the winding drum 4, and 6 is a knob for rotating the winding drum fixed to the end surface of the winding drum 4. Reference numeral 7 denotes a ratchet wheel which is coaxially fixed to the rotation shaft of the winding drum 4, 8 denotes a pivot pin provided on the bearing 1, and 9 denotes a pivot pin whose pivot is pivotally supported at its base. Ratchet lever, 10 is a ratchet tooth that meshes with the ratchet wheel 7 provided at the base of the ratchet lever 9, 11 is a release lever formed at the free end of the ratchet lever 9, and 12 is the ratchet tooth on the ratchet wheel 7. A spring for urging the ratchet lever 9 so that 10 is engaged with the ratchet lever 9.

Since the above-mentioned conventional ratchet device has the above-mentioned structure, if the knob 6 is continuously rotated while the ratchet wheel 7 and the ratchet teeth 10 are meshed with each other, the latch band 5 will be released. Can be unilaterally wrapped. If the release lever 11 is pressed in the direction of arrow A in FIG. 9 to tilt the ratchet lever 9 to release the meshing between the ratchet wheel 7 and the ratchet teeth 10,
The retaining band 5 can be loosened.

[0004]

However, the release lever 11 of the ratchet lever 9 is the same as the latch band 5 described above.
The ratchet wheel 7 with a weak force even when the
The ratchet wheel 10 and the ratchet tooth 10 are formed to have a certain length so that they can be disengaged from each other. Therefore, even if the tip of the release lever 11 is caught by a tree branch or the like while the vehicle is traveling, The ratchet lever 9 tilts in the direction to release the engagement, and as a result, the latch band 5
Is loosened and articles such as surfboards fall off the carrier.

The present invention has been made to eliminate the above disadvantages.

[0006]

In the ratchet device of the present invention, the ratchet wheel fixed to the rotating body, the ratchet teeth that mesh with the ratchet wheel, and the ratchet teeth can be engaged with and disengaged from the ratchet wheel. The operating means includes a ratchet lever connected to the ratchet teeth, and a release lever that is displaced between a position where the ratchet lever can be operated and a position where the ratchet lever cannot be operated.

The ratchet lever has one of engaging members which are rotatably pivotally supported by a pivot pin and are engaged with each other, and the release lever moves to the pivot pin through an elongated hole. Rotatably and rotatably supported, and has the other of the engaging members to be engaged with each other, and when the release lever moves relative to the ratchet lever, the one and the other of the engaging members engage with each other. Are combined.

One of the engaging members is a pawl portion and the other is a pawl receiver.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

In the present invention, as shown in FIGS. 1 to 4, the release lever 11 is separated from the ratchet lever 9 of the conventional ratchet device, and the release lever 11 is positioned on the back surface of the ratchet lever 9 and the release lever 11 is A long hole 1 extending in the longitudinal direction of the release lever 11 at the base of the sleeve piece 13.
4 is provided, and the release lever 11 is pivotally supported by the pivot pin 8 through the elongated hole 14 so as to be tiltable.

Further, a pawl portion 15 protruding upward is provided at the upper end of the ratchet lever 9, and the release lever 11 is provided.
The release lever 11 is provided on the inner surface of the sleeve piece 13 of the
A pawl receiver 16 is provided which engages with the pawl portion 15 when the pivot pin 8 is moved downward by a length of four.

Further, the release lever 11 is constantly pushed upward by the spring 12 for constantly restraining the ratchet lever 9 in the counterclockwise direction, and the lowermost end 14b of the elongated hole 14 is pushed.
Then, the pivot pin 8 is brought into contact with the position and is restrained in the counterclockwise direction.

Since the ratchet device of the present invention has the above-mentioned structure, as shown in FIGS.
5, the release lever 11 is pushed downward against the spring 12 so that the pawl receiver 16 is engaged, and the release lever 11 is moved to the uppermost end 14 of the elongated hole 14 as shown in FIG.
When a is in contact with the pivot pin 8 and is tilted in the direction of the arrow in FIG. 4, the ratchet lever 9 is rotated together, so that the engagement between the ratchet wheel 7 and the ratchet teeth 10 can be released.

On the other hand, as shown in FIG. 5, the release lever 1 is
When only the release lever 11 is tilted in the direction of the arrow without pushing down 1 against the spring 12,
Since the pawl portion 15 and the pawl receiver 16 do not engage with each other, only the release lever 11 tilts with the lowermost end 14b of the elongated hole 14 in contact with the pivot pin 8, so that the ratchet wheel 7 and the ratchet teeth The mesh of 10 is not released.

Therefore, even if the tip of the release lever 11 is caught on a branch of a tree or the like and tilted against the spring 12, the ratchet lever 9 does not tilt, so that the latching band 5 is used while the vehicle is running. There is no risk of loosening.

In the present invention, the release lever 11
The pawl portion 15 and the pawl receiver 16 may be engaged with each other when the is moved upward.

FIG. 6 shows another embodiment of the present invention, in which the holes are formed in the side surface of the pawl portion 15.

7 and 8 show another embodiment of the present invention. In this embodiment, the intermediate portion of the pawl lever 18 having the pawl portion 17 formed at the base end thereof is connected to the sleeve piece 13 of the release lever 11. Is pivotally supported by a pivot shaft 19 so that the free end 20 is formed in the release lever 11 through the through hole 2
The spring 22 always urges the spring 1 to project outward.

Further, the ratchet lever 9 is formed with a pawl receiver 23 facing the pawl portion 17, the pawl lever 18 is tilted counterclockwise against the spring 22, and the release lever 11 is further provided. When is pressed downward in the direction of the long hole 14, the pawl portion 23 is engaged with the pawl portion 17.

In the above-described embodiment of the present invention, the pawl lever 18 is tilted counterclockwise, and then the release lever 11 is pressed downward to engage the pawl portion 17 with the pawl receiver 23 and then the release lever. If the uppermost end 14a of the elongated hole 14 is tilted with the pivot pin 8 in contact, the engagement between the ratchet wheel 7 and the ratchet teeth 10 can be released.

On the other hand, in cases other than the above, the ratchet lever 9 does not tilt, so that the latch band 5 does not loosen while the vehicle is traveling.

[0022]

According to the ratchet device of the present invention, even if the tip of the release lever hits the tip of the release lever due to a tree branch or the like and the release lever tilts, the ratchet lever does not tilt, so that the ratchet wheel and ratchet teeth are meshed. There is a great benefit of being able to stay safe and secure.

[Brief description of drawings]

FIG. 1 is a side view in which a part of a ratchet device of the present invention is shown in section.

FIG. 2 is a plan view for explaining a ratchet lever and a release lever of the ratchet device of the present invention.

FIG. 3 is a vertical side view for explaining the operation of the main part of the ratchet device of the present invention.

FIG. 4 is a vertical sectional side view for explaining an operation of a main part of the ratchet device of the present invention.

FIG. 5 is a vertical sectional side view for explaining an operation of a main part of the ratchet device of the present invention.

FIG. 6 is a side view, partly in section, of another embodiment of the ratchet device of the present invention.

FIG. 7 is a side view, partly in section, of yet another embodiment of the ratchet device of the present invention.

FIG. 8 is a plan view of a ratchet lever and a release lever of still another embodiment of the device of the present invention.

FIG. 9 is a side view of a conventional ratchet device.

[Explanation of symbols]

 1 Bearing 2 Carrier Bar 3 Tightening Tool 4 Winding Drum 5 Latch Band 6 Knob 7 Ratchet Wheel 8 Pivot Pin 9 Ratchet Lever 10 Ratchet Tooth 11 Release Lever 12 Spring 13 Sleeve Piece 14 Long Hole 14a Top 14b Bottom 15 Pawl 16 Pawl 17 Pawl 18 Pawl Lever 19 Pivot 20 Free end 21 Through hole 22 Spring 23 Pawl

Claims (3)

[Claims] 1. A ratchet wheel fixed to a rotating body, ratchet teeth meshing with the ratchet wheel, and operating means for engaging and disengaging the ratchet tooth with the ratchet wheel. A ratchet device comprising: a ratchet lever connected to the ratchet teeth; and a release lever that is displaced between a position where the ratchet lever can be operated and a position where the ratchet lever cannot be operated. 2. The ratchet lever has one of engaging members pivotally supported by a pivot pin and engaged with each other, and the release lever has an elongated hole in the pivot pin. And the other of the engaging members that are engaged with each other, the one and the other of the engaging members being moved relative to the ratchet lever. 2. The engagement of one with the other.
The described ratchet device. 3. The ratchet device according to claim 2, wherein one of the engaging members is a pawl portion and the other is a pawl receiving portion.