A tightener for a binding strap is disclosed. A base is penetrated with a rotating axle with a ratchet installed on its one end. A tooth limits the ratchet to move in a single direction. A driving element is mounted on the rotating axle. A ratchet tooth engages with the ratchet for the driving eleme
A tightener for a binding strap is disclosed. A base is penetrated with a rotating axle with a ratchet installed on its one end. A tooth limits the ratchet to move in a single direction. A driving element is mounted on the rotating axle. A ratchet tooth engages with the ratchet for the driving element to drive the ratchet. The driving element has a cam part and a blocking part.
대표청구항▼
What is claimed is: 1. A tightener for a binding strap, comprising: a base having two opposite sidewalls, each of which has an axle hole; wherein a rotating axle goes through the axle holes on the two sidewalls, a ratchet is fixed on the rotating axle protruding from one sidewall of the base, a too
What is claimed is: 1. A tightener for a binding strap, comprising: a base having two opposite sidewalls, each of which has an axle hole; wherein a rotating axle goes through the axle holes on the two sidewalls, a ratchet is fixed on the rotating axle protruding from one sidewall of the base, a tooth engaging by its inner side with and limiting the ratchet to rotate in a single direction is provided on the sidewall above the ratchet, and the rotating axle in the base has a long cutting groove for the binding strap to go through; and a driving element for rotating the ratchet, the driving element being removably and coaxially mounted on one end of the rotating axle outside the ratchet and adjacent to the ratchet, wherein a ratchet tooth is pivotally disposed on the driving element to engage with the ratchet, a holding part protruding outwardly from the driving element for exertion of force, a cam part disposed on the driving element to push the tooth away from the ratchet, and a blocking part disposed on the driving element and opposite to the holding part for blocking the tooth, wherein the driving element can be removed from the rotating axle, flipped, and coaxially mounted on the rotating axle adjacent to the ratchet with the ratchet tooth being separated from the ratchet by the holding part, after the driving element being flipped the cam part pushes the tooth away from the ratchet when the driving element rotates, wherein a mounting part is disposed between the blocking part and the ratchet tooth, the driving element is coaxially mounted on the rotating axle via the mounting part along the axial direction of the rotating axle. 2. The tightener for a binding strap of claim 1, wherein the width of the ratchet on the base is smaller than the width of the tooth. 3. The tightener for a binding strap of claim 1, wherein the mounting part is a through hole and the driving element is mounted on the outer ring of the rotating axle by the through hole. 4. The tightener for a binding strap of claim 1, wherein the mounting part is a protruding pillar, the rotating axle has a groove part on its one end, and the driving element is disposed in the groove part of the rotating axle by the protruding pillar. 5. The tightener for a binding strap of claim 1, wherein the driving element has a pivotal bar, the ratchet tooth is pivotally connected to the pivotal bar using a pivotal part, a pulling part heavier than the ratchet tooth is extended from the ratchet tooth, the pulling part swings downwards due to its own weight, and the ratchet tooth protrudes towards the ratchet and engages with the ratchet when the pulling part is in its downward position. 6. The tightener for a binding strap of claim 1, wherein a pivotal bar protrudes from the sidewall of the base having the ratchet, the tooth is pivotally connected with the pivotal bar using a pivotal part, and one end surface of the blocking part blocks the side edge of the pivotal part of the tooth when the driving element is driving. 7. The tightener for a binding strap of claim 1, wherein a limiting element goes through the rotating axle on the end different from the ratchet outside the sidewall of the base, restricting the rotating axle within the axle holes on the two sidewalls. 8. The tightener for a binding strap of claim 1, wherein the horizontal surface of the ratchet has two opposite semi-circular holes, the rotating axle consists of two semi-circular boards going through the two semi-circular holes of the ratchet, and the long cutting groove is formed by the gap between the two semi-circular boards. 9. The tightener for a binding strap of claim 8, wherein the two semi-circular boards are positioned by a spring pin on the end of the ratchet outside the sidewall of the base, and the other end of the two semi-circular boards outside the sidewall of the base is penetrated through and positioned by a bent bar pin. 10. The tightener for a binding strap of claim 1, wherein the width of the ratchet on the base is roughly the same as the width of the tooth, a pushing part for pushing the tooth outside the ratchet protrudes from the cam part of the driving element towards the tooth, and a protruding section for blocking the tooth protrudes from the blocking part towards the tooth.
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이 특허에 인용된 특허 (11)
Hu, Yu Fang, Belt reel assembly for fastening goods on a truck.
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