Anti-loose ratchet tensioner

Abstract

The application discloses a kind of anti-loose ratchet tensioner, including fastener, pulling member, ratchet member and the hinge rod for fastener and pulling member articulation.The ratchet member is composed of driving part, bridge part and locking part, driving part is arranged towards the direction of pulling member, bridge part connects driving part with locking part, the middle of driving part is provided with movable chamber, the inner wall of movable chamber is provided with multiple first teeth, and the locking part is provided with multiple second teeth.The pusher is composed of mounting part, elastic arm and pusher, and the hinge rod is composed of first half moon rod and second half moon rod.The anti-loose ratchet tensioner uses the cooperation of ratchet member, pusher and blocking piece to realize automatic sensing whether goods are tensioned, keeps goods tensioned within a certain pre-tightening range, so as to avoid different users over-tensioning goods, causing goods damage.

Description

Technical Field

[0001] This invention relates to ratchet tensioner technology, and more particularly to an anti-loosening ratchet tensioner. Background Technology

[0002] In packaging and transportation work, various items often need to be packed and secured, especially when lifting goods. To ensure the goods are securely and stably packed, tensioners are usually used to tighten the straps. During lifting, tensioners are also used to raise and lower the slings. Existing tensioners mostly unwind freely when releasing the straps, resulting in unstable unwinding. This can cause goods to tilt, collapse, or fall rapidly, potentially leading to damage and economic losses. Furthermore, they pose safety hazards, potentially causing irreversible consequences such as personal injury or death. Therefore, they have low safety and high usage risks.

[0003] Existing tensioners with automatic rewind straps have a large size after the strap is wound up. Therefore, the automatic rewinder is located at one end of the tensioner. One end of the strap is connected to the automatic rewinder, and the other end passes through the gap between the ratchet shaft and connects to the object being bundled. By shaking the tensioning wrench up and down, the ratchet shaft is rotated, thus tightening the strap. When winding the strap, pulling up the tensioning wrench disengages it from the ratchet. Under the force of the automatic rewinder, the strap pulls the ratchet shaft to rotate in the opposite direction, thus automatically winding the strap up. This type of tensioner can only sense whether the goods are tightened by feeling the reverse force of the strap after the tensioning wrench is pulled up, and cannot automatically sense the tightening through the ratchet mechanism. Different users have different strengths, resulting in inconsistent binding force on the goods, which can lead to some goods being pulled too tight, causing damage. Summary of the Invention

[0004] To address the shortcomings of the existing technology, this invention proposes an anti-loosening ratchet tensioner.

[0005] The technical solution of this invention is implemented as follows:

[0006] An anti-loosening ratchet tensioner includes a fastener, an actuating component, a ratchet component, and a hinge rod for hinged connection between the fastener and the actuating component, characterized in that...

[0007] The fastener has a first sliding groove, within which a limiting member is located. The fastener also has a connecting portion with a stop portion. The limiting member has a limiting extension, on which a spring is fitted. One end of the spring contacts the limiting member, and the other end contacts the stop portion. The fastener also has a first hinge portion with a first hinge hole in the center, within which a hinge rod is located.

[0008] The lever is provided with a second hinge portion, and a second hinge hole is provided in the middle of the second hinge portion. The hinge rod is located in the second hinge hole. The lever is provided with a pusher, which is disposed on the outer wall of the lever.

[0009] The ratchet assembly comprises a driving part, a bridging part, and a locking part. The driving part is positioned towards the actuating part. The bridging part connects the driving part and the locking part. The driving part has a movable chamber in the middle, and the inner wall of the movable chamber has multiple first teeth. The locking part has multiple second teeth. The ratchet assembly has a positioning hole in the middle, and a limiting beam is located in the middle of the positioning hole. The hinge rod is located in the positioning hole.

[0010] The pushing member consists of a mounting part, an elastic arm, and a pushing part. The mounting part is fixed to the outer wall of the lever, and the pushing part is provided with a third tooth that mates with the first tooth.

[0011] The hinge rod consists of a first half-moon rod and a second half-moon rod, with an installation gap between the first half-moon rod and the second half-moon rod. Symmetrically arranged connecting blocks are provided in the installation gap, and the connecting blocks connect the first half-moon rod and the second half-moon rod. A placement area for placing a strap is formed between the connecting blocks, and the two ends of the connecting blocks form a fixing area for fixing a ratchet. The first half-moon rod and the second half-moon rod are provided with limiting holes, and limiting pins are provided in the limiting holes.

[0012] In this invention, the actuating member is provided with a second sliding groove, and a blocking member is provided in the second sliding groove. The blocking member is composed of a holding part and sliding parts located on both sides of the holding part. The holding part is provided with a holding hole, and the sliding part is provided with an extension rod. The extension rod is provided with an arc-shaped block, and the arc-shaped block is located between the mounting part and the pushing part.

[0013] In this invention, the second sliding groove is provided with a first notch and a second notch, and a positioning tooth is provided between the first notch and the second notch. An elastic element is sleeved on the outside of the positioning tooth. The elastic element is composed of an elastic rod and a spiral part. The positioning tooth is located in the middle of the spiral part. The spiral part is arranged in a spiral structure in the first notch and the second notch. The elastic rod extends from the upper end of the retaining part to the lower end of the retaining part through a retaining hole.

[0014] In this invention, the length of the second sliding groove is greater than the length of the sliding part, and the second sliding groove forms a first gap opening at one end and a second gap opening at the other end through the sliding part.

[0015] In this invention, both the first tooth and the second tooth are unidirectional teeth and both face the direction of the lever. The first tooth is composed of a first inclined surface and a second inclined surface. The length of the first inclined surface is greater than the length of the second inclined surface. A first tooth groove is formed between the first tooth and the second tooth.

[0016] In this invention, the limiting member is provided with a limiting part, the limiting part is provided with a receiving opening for accommodating the locking part, the two ends of the receiving opening form limiting parts, a second tooth groove is formed between the second tooth and the second tooth, and the limiting part is located in the second tooth groove.

[0017] In this invention, the pushing part is provided with a guiding slope.

[0018] In this invention, the maximum diameter of the locking part is smaller than the diameter of the driving part, and the diameter of the bridging part is smaller than the minimum diameter of the locking part.

[0019] In this invention, the fastener is provided with a first positioning surface and a second positioning surface that limit the rotation angle of the lever.

[0020] In this invention, the ratchet is located at the outermost end of the hinge rod.

[0021] The anti-loosening ratchet tensioner of the present invention has the following beneficial effects: the anti-loosening ratchet tensioner uses the cooperation of ratchet, push and stop components to automatically sense whether the goods are tightened and keep the goods tightened within a certain pre-tension range, thereby avoiding over-tightening of the goods by different users, which may lead to damage to the goods. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the anti-loosening ratchet tensioner structure of the present invention;

[0023] Figure 2 for Figure 1 Enlarged view of section A in the image;

[0024] Figure 3 for Figure 1 Exploded view;

[0025] Figure 4 for Figure 3 A schematic diagram of the fastener structure in the diagram;

[0026] Figure 5 for Figure 3 A schematic diagram of the limiting component structure in the middle;

[0027] Figure 6 for Figure 3 A schematic diagram of the hinge rod structure in the diagram;

[0028] Figure 7 for Figure 3A schematic diagram of the ratchet component structure in the diagram;

[0029] Figure 8 for Figure 7 A schematic diagram of the structure in another direction;

[0030] Figure 9 for Figure 3 Perspective view of the blocking component structure in the middle;

[0031] Figure 10 for Figure 3 A schematic diagram of the lever mechanism structure;

[0032] Figure 11 This is a schematic diagram showing the installation state of the ratchet component, pusher component, and arc block structure in this invention;

[0033] Figure 12 This is a schematic diagram showing the installation state of the blocking and pushing components in this invention;

[0034] Figure 13 This is a schematic diagram showing the installation state of the lever and blocking components in this invention;

[0035] Figure 14 The figure shows a schematic diagram of the installation state of the lever and fastener structure in this invention.

[0036] In the diagram: Fastener 1, Actuator 2, Ratchet 3, Hinge 4, Fastening Plate 5, Connecting Part 6, Fixing Bolt 7, First Sliding Groove 8, Limiting Part 9, Abutting Part 10, Limiting Extension 11, Spring 12, First Hinge Part 13, First Hinge Hole 14, Limiting Hole 15, Limiting Part 16, Third Notch 17, Receiving Port 18, Restricting Part 19, Second Tooth 20, Second Tooth Groove 21, Actuator Plate 22, Handle 23, Connecting Pin 24, Second Hinge Part 25, Second Hinge Hole 26, Pusher 27, Mounting Part 28, Elastic Arm 29, Pusher 30, First Tooth 31, Third Tooth 32, Guide Surface 33, Bridging Part 34, Locking Part 35 Activity room 36, positioning hole 37, limiting beam 38, first crescent rod 39, second crescent rod 40, installation gap 41, connecting block 42, placement area 43, fixing area 44, limiting hole 45, limiting pin 46, first inclined surface 47, second inclined surface 48, first tooth groove 49, second sliding groove 50, blocking member 51, holding part 52, sliding part 53, holding hole 54, extension rod 55, arc block 56, limiting end 57, first notch 58, second notch 59, positioning tooth 60, elastic member 61, elastic rod 62, spiral part 63, first gap opening 64, second gap opening 65, first positioning surface 66, second positioning surface 67, nut 68. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0038] like Figures 1 to 14 As shown, this anti-loosening ratchet tensioner of the present invention includes a fastener 1, an actuating member 2, a ratchet member 3, and a hinge rod 4 for hinged connection between the fastener 1 and the actuating member 2. The fastener 1 is used to connect a strap, while another strap is fixed to the hinge rod 4. The actuating member 2 drives the hinge rod 4 to rotate, thereby tightening the strap connected to the hinge rod 4, which in turn tightens the strap connected to the fastener 1, thus achieving the binding of goods.

[0039] like Figure 4 As shown, the fastener 1 consists of symmetrically arranged fastening plates 5, which are connected in the middle by a connecting part 6. One end of the fastening plate 5 is provided with a fixing bolt 7, which is installed on the fastener 1 by a nut 68.

[0040] The fastener 1 has a first sliding groove 8, which is disposed on the fastening plate 5. A limiting member 9 is disposed within the first sliding groove 8. The fastener 1 has a connecting part 6, which has an abutment part 10. The limiting member 9 has a limiting extension 11, and a spring 12 is fitted on the limiting extension 11. One end of the spring 12 contacts the limiting member 9, and the other end contacts the abutment part 10. The fastener 1 has a first hinge part 13, which has a first hinge hole 14 in the middle. The hinge rod 4 is located in the first hinge hole 14. A limiting hole 15 is provided on the abutment part 10. The limiting extension 11 is inserted into the limiting hole 15, and the limiting member 9 is pushed towards the end of the first hinge part 13 by the spring 12.

[0041] The limiting member 9 is provided with a limiting part 16, and the limiting part 16 is provided with a receiving opening 18 for accommodating the locking part 35. Restricting parts 19 are formed at both ends of the receiving opening 18, and a second tooth groove 21 is formed between the second teeth 20. The restricting part 19 is located within the second tooth groove 21. The restricting part 19 can restrict the rotation of the ratchet member 3, ensuring that the ratchet member 3 can only be pushed by the lever 2, and cannot be made to rotate in the opposite direction towards the lever 2.

[0042] The lever 2 consists of symmetrically arranged lever plates 22. One end of each lever plate 22 has a handle 23, and a connecting pin 24 is provided in the middle to keep the two lever plates 22 fixed. The other end of each lever plate 22 has a second hinge portion 25, and a second hinge hole 26 is provided in the middle of the second hinge portion 25. The hinge rod 4 is located in the second hinge hole 26. The first hinge hole 14 and the second hinge hole 26 cooperate to allow the hinge rod 4 to be inserted into them, thereby allowing the fastener 1 and the lever 2 to rotate on the hinge rod 4.

[0043] A pusher 27 is provided on the lever 2, and the pusher 27 is disposed on the outer wall of the lever 2. The pusher 27 consists of a mounting part 28, an elastic arm 29, and a pushing part 30. The mounting part 28 is fixed to the outer wall of the lever 2, and the pushing part 30 is provided with a third tooth 32 that mates with the first tooth 31, and a guide slope 33. Since the pusher 27 is connected to the lever 2, the lever 2 can drive the pusher 27 to rotate, thereby causing the pusher 27 to push the ratchet 3, keeping the ratchet 3 rotating on the hinge rod 4.

[0044] The mounting section 28 is also provided with a third notch 17 to accommodate the sliding section 53.

[0045] The ratchet assembly 3 consists of a drive section 17, a bridging section 34, and a locking section 35. The drive section 17 is positioned towards the actuating member 2. The bridging section 34 connects the drive section 17 and the locking section 35. The drive section 17 has a movable chamber 36 in the middle, and the inner wall of the movable chamber 36 has multiple first teeth 31. The locking section 35 has multiple second teeth 20. The ratchet assembly 3 has a positioning hole 37 in the middle, and a limiting beam 38 is located in the middle of the positioning hole 37. The hinge rod 4 is located in the positioning hole 37.

[0046] The maximum diameter of the locking part 35 is smaller than the diameter of the driving part 17, and the diameter of the bridging part 34 is smaller than the minimum diameter of the locking part 35.

[0047] The hinge rod 4 consists of a first crescent rod 39 and a second crescent rod 40, with an installation gap 41 between them. Symmetrically arranged connecting blocks 42 are provided within the installation gap 41, connecting the first crescent rod 39 and the second crescent rod 40. A placement area 43 for placing a strap is formed between the connecting blocks 42, and the two ends of the connecting blocks 42 form a fixing area 44 for fixing the ratchet 3. A limiting hole 45 is provided on the first crescent rod 39 and the second crescent rod 40, and a limiting pin 46 is provided within the limiting hole 45.

[0048] The positioning hole 37 on the ratchet 3 can hold the hinge rod 4 in it and place it in the fixed area 44 through the limiting beam 38. This allows the ratchet 3 to keep the hinge rod 4 rotating after being driven by the lever 2. However, when the lever 2 rotates in the opposite direction, the ratchet 3 will be blocked by the limiting member 9, thus preventing it from rotating in the opposite direction. The lever 2 can rotate on the hinge rod 4 through the second hinge hole 26.

[0049] Both the first tooth 31 and the second tooth 20 are unidirectional teeth, and both face the actuating member 2. The first tooth 31 is composed of a first inclined surface 47 and a second inclined surface 48. The length of the first inclined surface 47 is greater than the length of the second inclined surface 48, and a first tooth groove 49 is formed between the first tooth 31 and the second tooth 30. Since the length of the first inclined surface 47 is greater than the length of the second inclined surface 48, the third tooth 32 can push the ratchet member 3 toward the fastener 1. However, after the ratchet member 3 is blocked by the limiting member 9, when the third tooth 32 rotates in the opposite direction, it will be pressed down under the action of the elastic arm 29, thereby causing the third tooth 32 to disengage from the original first tooth groove 49 and enter a first tooth groove 49 at a different position.

[0050] The first tooth 31 can be pushed by the third tooth 32 on the pusher 27, which in turn pushes the second tooth 20 against the limiting member 9. The limiting member 9 then pushes the compression spring 12, thus maintaining the position of the second tooth 20. If the lever 2 is rotated in the opposite direction, the second tooth 20 will be blocked by the limiting member 9. However, since the pusher 27 is provided with an elastic arm 29, it can rotate in the opposite direction along with the lever 2, thereby keeping the third tooth 32 moving within the movable chamber 36 and maintaining contact between the third tooth 32 and the other first teeth 31.

[0051] The actuator 2 is provided with a second sliding groove 50, and a blocking member 51 is provided in the second sliding groove 50. The blocking member 51 is composed of a holding part 52 and sliding parts 53 located on both sides of the holding part 52. The holding part 52 is provided with a holding hole 54, and the sliding part 53 is provided with an extension rod 55. The extension rod 55 is provided with an arc-shaped block 56, which is located between the mounting part 28 and the pushing part 30. The holding part 52 is also provided with a limiting end 57, which can prevent the blocking member 51 from disengaging from the limitation of the second sliding groove 50.

[0052] Since the arc-shaped block 56 is indirectly connected to the lever 2, it can also rotate along with the lever 2. When the lever 2 pushes the ratchet to rotate, the arc-shaped block 56 can rotate accordingly. However, when the strap on the hinge rod 4 is taut, the ratchet 3 will be subjected to a reverse force from the strap. This reverse force is greater than the thrust of the pusher 27, causing the third tooth 32 on the pusher 27 to slip from the first tooth 31. The ratchet 56, guided by the guide ramp 33, keeps the elastic arm 29 pressed down, thus causing the third tooth 32 on the pusher 27 to disengage from the first tooth 31. When the lever 2 is pushed again, it will keep the lever 2 driving the pusher 27 and the blocking member 51 to rotate freely, thus preventing the strap on the hinge rod 4 from being further taut. This keeps the goods in a taut state, preventing them from falling off, but also preventing them from being over-tightened, thus avoiding damage to the goods.

[0053] The second sliding groove 50 is provided with a first notch 58 and a second notch 59. A positioning tooth 60 is provided between the first notch 58 and the second notch 59. An elastic member 61 is sleeved on the outside of the positioning tooth 60. The elastic member 61 is composed of an elastic rod 62 and a spiral part 63. The positioning tooth 60 is located in the middle of the spiral part 63. The spiral part 63 is arranged in a spiral structure in the first notch 58 and the second notch 59. The elastic rod 62 extends from the upper end of the retaining part 52 to the lower end of the retaining part 52 through the retaining hole 54.

[0054] The length of the second sliding groove 50 is greater than the length of the sliding part 53. The second sliding groove 50 forms a first gap opening 64 at one end and a second gap opening 65 at the other end through the sliding part 53.

[0055] The elastic element 61 keeps the blocking element 51 positioned between the first gap 64 and the second gap 65. When the lever 2 rotates the blocking element 51, the strap on the hinge rod 4 is not taut, and the blocking element 51 rotates with the lever 2. Since there is no reverse force from the strap on the hinge rod 4, the friction between the first tooth 31 and the third tooth 32 is greater than the elastic force of the elastic element 61. This allows the pusher 27 to rotate the ratchet 3. The arc-shaped block 56 on the blocking element 51 is blocked by the pusher 27, keeping the blocking element 51 sliding in the second sliding groove 50. This causes the blocking element 51 to move towards the first gap 64, narrowing the first gap 64 and widening the second gap 65.

[0056] When the hinge rod 4 has a reverse force from the strap, the friction between the first tooth 31 and the third tooth 32 will be less than the reverse force, and the first gap 64 will be reduced. The second sliding groove 50 pushes the blocking member 51 through the inner wall, so that the arc block 56 on the blocking member 51 slides along the guide slope 33, presses down the elastic arm 29, keeps the first tooth 31 and the third tooth 32 apart, realizes the free rotation of the lever 2, and keeps the hinge rod 4 in a taut state.

[0057] The fastener 1 is provided with a first positioning surface 66 and a second positioning surface 67 to limit the rotation angle of the lever 2. The first positioning surface 66 will limit the lower end surface of the blocking member 51, while the second positioning surface 67 will limit the arc block 56, thereby limiting the rotation angle of the lever 2.

[0058] The ratchet 3 is located at the outermost end of the hinge rod 4, which can reduce the friction between the ratchet 3 and the lever 2 and the fastener 1, and prevent the ratchet 3 from rubbing on both sides.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A ratchet tensioner for preventing loosening, comprising a fastener, an actuating component, a ratchet component, and a hinge rod for hinged connection between the fastener and the actuating component, characterized in that, The fastener has a first sliding groove, within which a limiting member is located. The fastener also has a connecting portion with a stop portion. The limiting member has a limiting extension, on which a spring is fitted. One end of the spring contacts the limiting member, and the other end contacts the stop portion. The fastener also has a first hinge portion with a first hinge hole in the center, within which a hinge rod is located. The lever is provided with a second hinge portion, and a second hinge hole is provided in the middle of the second hinge portion. The hinge rod is located in the second hinge hole. The lever is provided with a pusher, which is disposed on the outer wall of the lever. The ratchet assembly comprises a driving part, a bridging part, and a locking part. The driving part is positioned towards the actuating part. The bridging part connects the driving part and the locking part. The driving part has a movable chamber in the middle, and the inner wall of the movable chamber has multiple first teeth. The locking part has multiple second teeth. The ratchet assembly has a positioning hole in the middle, and a limiting beam is located in the middle of the positioning hole. The hinge rod is located in the positioning hole. The pushing member consists of a mounting part, an elastic arm, and a pushing part. The mounting part is fixed to the outer wall of the lever, and the pushing part is provided with a third tooth that mates with the first tooth. The hinge rod consists of a first half-moon rod and a second half-moon rod, with an installation gap between the first half-moon rod and the second half-moon rod. Symmetrically arranged connecting blocks are provided in the installation gap. The connecting blocks connect the first half-moon rod and the second half-moon rod. A placement area for placing a strap is formed between the connecting blocks, and the two ends of the connecting blocks form a fixing area for fixing a ratchet. The first half-moon rod and the second half-moon rod are provided with limiting holes, and limiting pins are provided in the limiting holes. The lever is provided with a second sliding groove, and a blocking member is provided in the second sliding groove. The blocking member is composed of a holding part and sliding parts located on both sides of the holding part. The holding part is provided with a holding hole, and the sliding part is provided with an extension rod. The extension rod is provided with an arc-shaped block, and the arc-shaped block is located between the mounting part and the pushing part.

2. The anti-loosening ratchet tensioner according to claim 1, characterized in that, The second sliding groove is provided with a first notch and a second notch, and a positioning tooth is provided between the first notch and the second notch. An elastic element is sleeved on the outside of the positioning tooth. The elastic element is composed of an elastic rod and a spiral part. The positioning tooth is located in the middle of the spiral part. The spiral part is arranged in a spiral structure in the first notch and the second notch. The elastic rod extends from the upper end of the retaining part to the lower end of the retaining part through a retaining hole.

3. The anti-loosening ratchet tensioner according to claim 2, characterized in that, The length of the second sliding groove is greater than the length of the sliding part. The second sliding groove forms a first gap opening at one end and a second gap opening at the other end through the sliding part.

4. The anti-loosening ratchet tensioner according to claim 1, characterized in that, Both the first tooth and the second tooth are unidirectional teeth and both face the direction of the lever. The first tooth is composed of a first inclined surface and a second inclined surface. The length of the first inclined surface is greater than the length of the second inclined surface. A first tooth groove is formed between the first tooth and the second tooth.

5. The anti-loosening ratchet tensioner according to claim 4, characterized in that, The limiting member is provided with a limiting part, and the limiting part is provided with a receiving opening for accommodating the locking part. The two ends of the receiving opening form limiting parts, and a second tooth groove is formed between the second tooth and the second tooth. The limiting part is located in the second tooth groove.

6. The anti-loosening ratchet tensioner according to claim 1, characterized in that, The pushing part is provided with a guide slope.

7. The anti-loosening ratchet tensioner according to claim 1, characterized in that, The maximum diameter of the locking part is smaller than the diameter of the driving part, and the diameter of the bridging part is smaller than the minimum diameter of the locking part.

8. The anti-loosening ratchet tensioner according to claim 1, characterized in that, The fastener is provided with a first positioning surface and a second positioning surface that limit the rotation angle of the lever.

9. The anti-loosening ratchet tensioner according to claim 1, characterized in that, The ratchet is located at the outermost end of the hinge rod.

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