A one-piece bidirectional adjustable take-up device

Abstract

The utility model discloses a kind of integrated two-way adjustable contraction's tensioner, belong to tensioner technical field, including two first connecting piece, two the first connecting piece inside are slidably connected with second connecting piece, first winding roller is equipped between two second connecting pieces, second winding roller is equipped between two first connecting pieces, adjusting assembly for adjusting second connecting piece is equipped on the first connecting piece, the position of second connecting piece in the first connecting piece can be adjusted by adjusting assembly, reached the effect of adjusting tensioner length, can adapt to different size article or goods, greatly improve the versatility of tensioner, more accurate tension control, can ensure that goods are firmly fixed, reduce the risk that goods are loose or drop in transportation or handling process, to improve safety, when not using, tensioner can also be adjusted to shortest length, to reduce its volume, facilitate storage and transportation.

Description

Technical Field

[0001] This utility model relates to the field of tensioner technology, specifically an integrated tensioner with bidirectional adjustable retraction. Background Technology

[0002] A tensioner is a device used to tighten, fix, or tension objects. Its main function is to apply tension to make objects tightly connected together, preventing loosening or movement. In the case of truck tensioners, their primary function is to securely fix goods to the truck during transportation by applying tension, preventing displacement, collision, or falling during travel, thus ensuring cargo safety. For example, a truck tensioner with bidirectional adjustable retractable belt (publication number CN220199169U) includes a base plate, two side plates, a top plate, and a tensioner body. Two first fixing plates are symmetrically fixed to the bottom of the tensioner body. Each of the two first fixing plates has a first lead screw threaded inside. One end of each first lead screw is fixedly connected to a first handle, and the other end of each first lead screw is rotatably connected to a first positioning plate. Each of the two side plates, near the corresponding first positioning plate, has a groove. The two first positioning plates fit snugly against the inner wall of the corresponding groove. By adjusting the height and horizontal position of the tensioner body, it is highly practical, simple in structure, easy to operate, and convenient to use.

[0003] While the aforementioned technology can adjust the height and horizontal position of the tensioner body, it has the problem that the tensioner cannot be adjusted in length during use. If the load increases during use, the tension on the tensioner may exceed its design limit, leading to component damage or even breakage. The tensioned object may also experience wear or deformation. If the tensioner cannot be adjusted in length, it cannot compensate for these changes, resulting in a decrease in tension and loss of the expected effect. Utility Model Content

[0004] The purpose of this invention is to provide an integrated, bidirectional adjustable tensioner to solve the problem mentioned in the background art that current tensioners on the market cannot adjust their length.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an integrated, bidirectionally adjustable tensioner, comprising two first connecting members, each of which is internally slidably connected to a second connecting member; a first take-up roller is provided between the two second connecting members; a second take-up roller is provided between the two first connecting members; both ends of the second take-up roller are rotatably connected to third connecting members; a connecting rod is slidably connected between the two third connecting members; U-shaped frames are provided at both ends of the bottom of the connecting rod; and two first sliding rods are slidably connected to both ends of the U-shaped frames. Each of the first slide rods has a first pawl fixedly connected to its bottom. The two first pawls are respectively engaged with a first ratchet, and the two first ratchets are respectively located at both ends of the second take-up roller. The two ends of the U-shaped frame are also slidably connected to a second slide rod. The bottom of each of the two second slide rods is fixedly connected to a second pawl. The two second pawls are respectively engaged with two second ratchets, and the two second ratchets are respectively located at both ends of the second take-up roller. The U-shaped frame is provided with a limiting component for limiting the first slide rod and the second slide rod. The first connecting member is provided with an adjusting component for adjusting the second connecting member.

[0006] Preferably, the limiting assembly includes four L-shaped frames respectively disposed on one side of the U-shaped frame, and each of the four L-shaped frames is slidably connected with a limiting rod. Two limiting holes are opened on one side of each of the two first sliding rods and the two second sliding rods. The four limiting rods are slidably connected in the limiting holes, and a limiting plate is provided on one end of each of the four limiting rods. A spring is provided between one end of each of the four limiting plates and one end of each of the four L-shaped frames.

[0007] Preferably, the adjusting assembly includes two threaded rods, each of which is located at one end of the top of one of the two second connecting members. Each of the tops of the two first connecting members has a sliding groove, and the two threaded rods are slidably connected to the two sliding grooves. The outer surfaces of the two threaded rods are threaded with threaded sleeves. The tops of the two first connecting members also have a row of receiving holes, and the two threaded sleeves are slidably connected to the receiving holes.

[0008] Preferably, each of the two third connectors has a support block at one end, and a tension spring is provided between the two support blocks and the two ends of the connecting rod.

[0009] Preferably, the top of the two first slide rods is provided with a first pull ring, the top of the two second slide rods is provided with a second pull ring, and the end of the four limiting rods away from the L-shaped frame is provided with a third pull ring.

[0010] Preferably, a handle is provided between the upper parts of the two third connectors, and the outer surface of the handle is provided with an anti-slip pattern.

[0011] Preferably, the second take-up roller has a slot inside, and the two ends of the U-shaped frame are slidably connected to the inside of two third connecting members.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: (1) By installing one end of the webbing on the first take-up roller, then wrapping the webbing around the item to be fixed, and then passing the other end through the inside of the second take-up roller, and then rotating the third connector to drive the first pawl and the first ratchet to rotate, the second take-up roller is driven to rotate and the webbing is wound up. By adjusting the length of the webbing and the tightening force, it can be adapted to objects of different sizes and shapes, and has a certain degree of versatility.

[0013] (2) By moving the first slide bar and the second slide bar, the first pawl can drive the first ratchet to rotate in reverse or the second pawl can drive the second ratchet to rotate in the forward direction. This achieves the effect that the second take-up roller can rotate in the forward and reverse direction according to the actual situation when the webbing is being wound up. Traditional tensioners can only tighten the webbing in one direction. If it is over-tightened, the webbing needs to be manually released to make adjustments. By rotating the second take-up roller in the reverse direction, the webbing can be easily loosened, thus making it easier to adjust the tightness of the webbing and avoiding over-tightening or under-tightening.

[0014] (3) The position of the second connector inside the first connector can be adjusted by adjusting the component, which achieves the effect of adjusting the length of the tensioner. It can adapt to items or goods of different sizes, greatly improve the versatility of the tensioner, and more precise tension control can ensure that the goods are firmly fixed, reduce the risk of goods loosening or falling during transportation or handling, thereby improving safety. When not in use, the tensioner can also be adjusted to the shortest length, thereby reducing its volume and facilitating storage and transportation. Attached Figure Description

[0015] Figure 1 This is a front view of the structure of this utility model; Figure 2 This is a schematic diagram showing the unfolded structure of this utility model; Figure 3 This is a schematic diagram of the reversing structure of the second take-up roller of this utility model; Figure 4 This is a schematic diagram of the forward rotation structure of the second take-up roller of this utility model; Figure 5 This utility model Figure 1 Schematic diagram of the structure at point A; Figure 6 This utility model Figure 3 Schematic diagram of the structure at point B; Figure 7 This utility model Figure 4 A schematic diagram of the structure at point C.

[0016] In the figure: 1. First connecting piece; 2. Second connecting piece; 3. First take-up roller; 4. Second take-up roller; 5. Third connecting piece; 6. U-shaped frame; 7. First pawl; 8. First ratchet; 9. Second pawl; 10. Second ratchet; 11. Limiting rod; 12. Spring; 13. Threaded rod; 14. Threaded sleeve. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] This utility model provides the following technical solution: an integrated tensioner with bidirectional adjustable retraction. Example 1: The third connecting piece 5, the first pawl 7, the first ratchet 8, the second pawl 9, and the second ratchet 10 can drive the second take-up roller 4 to rotate. Figures 1-4 , Figure 6 and Figure 7 As shown, it includes two first connecting parts 1, each of which is slidably connected to a second connecting part 2. A first take-up roller 3 is provided between the two second connecting parts 2, and a second take-up roller 4 is provided between the two first connecting parts 1. Both ends of the second take-up roller 4 are rotatably connected to a third connecting part 5. A connecting rod is slidably connected between the two third connecting parts 5. U-shaped frames 6 are provided at both ends of the bottom of the connecting rod. Two first sliding rods are slidably connected to both ends of the U-shaped frames 6. A first pawl 7 is fixedly connected to the bottom of each of the two first sliding rods. The two first pawls 7 respectively mesh with a first ratchet 8, and the two first ratchet 8 are respectively located at the first... At both ends of the second take-up roller 4, and at both ends of the U-shaped frame 6, a second slide rod is slidably connected. The bottom of each of the two second slide rods is fixedly connected to a second pawl 9. The two second pawls 9 respectively engage with two second ratchet wheels 10. The two second ratchet wheels 10 are respectively located at both ends of the second take-up roller 4. Each of the two third connecting parts 5 has a support block at one end. A tension spring is provided between the two support blocks and the two ends of the connecting rod. A handle is provided between the upper parts of the two third connecting parts 5, and the outer surface of the handle is provided with anti-slip patterns. A groove is opened inside the second take-up roller 4. The two ends of the U-shaped frame 6 are slidably connected to the inside of the two third connecting parts 5.

[0019] When it is necessary to secure an item, one end of the webbing can be installed on the first take-up roller 3, and then the webbing can be wrapped around the item to be secured. The other end of the webbing can then be passed through the slot on the second take-up roller 4 and secured to the second take-up roller 4. Then, push the lever to make the third connecting piece 5 rotate, thereby causing the connecting rod and the U-shaped frame 6 to rotate. When it is necessary to rotate the second take-up roller 4 in the forward direction and tighten the webbing, the lever can be pushed in the forward direction to make the second pawl 9 rotate, thereby causing the second ratchet 10 to rotate, thus causing the second take-up roller 4 to rotate in the forward direction. When it is necessary to reverse the second take-up roller 4 and reduce the tightening force of the webbing, the lever can be pushed in the reverse direction to make the first pawl 7 and the first ratchet 8 rotate, thereby causing the second take-up roller 4 to rotate in the reverse direction. When it is necessary to remove the webbing, the connecting rod can be pulled upward to move the U-shaped frame 6 upward, thereby causing the first pawl 7 to disengage from the first ratchet 8 and the second pawl 9 to disengage from the second ratchet 10, thus allowing the webbing to be removed.

[0020] Example 2: Unlike Example 1, the limiting component can be used to limit and fix the first pawl 7 or the second pawl 9, such as... Figures 1-4 , Figure 6 and Figure 7 As shown, the U-shaped frame 6 is provided with a limiting assembly for limiting the first slide rod and the second slide rod; the limiting assembly includes four L-shaped frames respectively set on one side of the U-shaped frame 6, and each of the four L-shaped frames is slidably connected with a limiting rod 11. Two limiting holes are opened on one side of each of the two first slide rods and the two second slide rods. The four limiting rods 11 are slidably connected in the limiting holes, and each of the four limiting rods 11 is provided with a limiting plate at one end. A spring 12 is provided between one end of each of the four limiting plates and one end of each of the four L-shaped frames. A first pull ring is provided at the top of each of the two first slide rods, a second pull ring is provided at the top of each of the two second slide rods, and a third pull ring is provided at the end of each of the four limiting rods 11 away from the L-shaped frame.

[0021] When the second take-up roller 4 needs to rotate forward, the two third pull rings can be pulled, causing the two limit rods 11 to squeeze the spring 12 and move away from one of the limit holes on the first slide rod. Then, the first slide rod is pulled upward, causing the first pawl 7 to move away from the first ratchet 8. After the adjustment is completed, the pulling force on the two limit rods 11 can be released. Then, under the action of the spring 12, the two limit rods 11 are moved into another limit hole on the first slide rod, thereby limiting and fixing the first slide rod and the first pawl 7. This causes the second pawl 9 to drive the second ratchet 10 to rotate forward. When the second take-up roller 4 needs to rotate in reverse, the first pawl 7 and the first ratchet 8 can be engaged. Then, the other two third pull rings can be pulled, and then the second slide rod is pulled upward, causing the second pawl 9 to move away from the second ratchet 10. This causes the first pawl 7 to drive the second take-up roller 4 in reverse.

[0022] Example 3: Unlike Example 2, the adjustable component can change the position of the second connector 2 inside the first connector 1, such as... Figure 1 , Figure 2 and Figure 5 As shown, the first connector 1 is provided with an adjustment assembly for adjusting the second connector 2. The adjustment assembly includes two threaded rods 13, which are respectively located at one end of the top of the two second connectors 2. The top of the two first connectors 1 is provided with a sliding groove, and the two threaded rods 13 are slidably connected in the two sliding grooves. The outer surface of the two threaded rods 13 is threadedly connected with threaded sleeves 14. The top of the two first connectors 1 is also provided with a row of storage holes, and the two threaded sleeves 14 are slidably connected in the storage holes.

[0023] When the position of the second connector 2 needs to be adjusted, the two threaded sleeves 14 can be rotated to move them away from the threaded rod 13 and the receiving hole. Then, the two threaded sleeves 14 are pushed to move the threaded rod 13 inside the slide groove, thereby moving the second connector 2 inside the first connector 1. After adjusting to the appropriate position, the threaded sleeves 14 are rotated again to move them closer to the threaded rod 13 and into the receiving hole, thereby limiting the threaded rod 13 and the second connector 2.

[0024] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0025] The contents not described in detail in this specification are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An integrated bidirectional adjustable tensioner, comprising two first connecting parts (1), each of the two first connecting parts (1) having a second connecting part (2) slidably connected inside, a first take-up roller (3) between the two second connecting parts (2), and a second take-up roller (4) between the two first connecting parts (1). Its features are: The second take-up roller (4) is rotatably connected to both ends of a third connector (5), and a connecting rod is slidably connected between the two third connectors (5). The bottom ends of the connecting rod are provided with U-shaped frames (6). The two ends of the U-shaped frame (6) are slidably connected to two first slide rods. The bottom of the two first slide rods is fixedly connected to a first pawl (7). The two first pawls (7) are respectively engaged with a first ratchet (8). The two first ratchets (8) are respectively located at both ends of the second take-up roller (4). The two ends of the U-shaped frame (6) are also slidably connected to a second slide rod. The bottom of the two second slide rods is fixedly connected to a second pawl (9). The two second pawls (9) are respectively engaged with two second ratchets (10). The two second ratchets (10) are respectively located at both ends of the second take-up roller (4). The U-shaped frame (6) is provided with a limiting component for limiting the first slide rod and the second slide rod. The first connector (1) is provided with an adjustment component for adjusting the second connector (2).

2. The integrated bidirectional adjustable tensioner according to claim 1, characterized in that: The limiting assembly includes four L-shaped frames respectively disposed on one side of the U-shaped frame (6), and each of the four L-shaped frames is slidably connected with a limiting rod (11). Two limiting holes are opened on one side of each of the two first sliding rods and the two second sliding rods. The four limiting rods (11) are slidably connected in the limiting holes, and a limiting plate is provided on one end of each of the four limiting rods (11). A spring (12) is provided between one end of each of the four limiting plates and one end of each of the four L-shaped frames.

3. The integrated bidirectional adjustable tensioner according to claim 1, characterized in that: The adjustment assembly includes two threaded rods (13), which are respectively located at one end of the top of the two second connectors (2). The top of the two first connectors (1) is provided with a sliding groove, and the two threaded rods (13) are slidably connected in the two sliding grooves. The outer surface of the two threaded rods (13) is threadedly connected with threaded sleeves (14). The top of the two first connectors (1) is also provided with a row of storage holes, and the two threaded sleeves (14) are slidably connected in the storage holes.

4. The integrated bidirectional adjustable tensioner according to claim 1, characterized in that: Each of the two third connectors (5) has a support block at one end, and a tension spring is provided between the two support blocks and the two ends of the connecting rod.

5. The integrated bidirectional adjustable tensioner according to claim 2, characterized in that: The top of the two first slide rods is provided with a first pull ring, the top of the two second slide rods is provided with a second pull ring, and the end of the four limiting rods (11) away from the L-shaped frame is provided with a third pull ring.

6. The integrated bidirectional adjustable tensioner according to claim 1, characterized in that: A handle is provided between the upper parts of the two third connectors (5), and the outer surface of the handle is provided with anti-slip pattern.

7. The integrated bidirectional adjustable tensioner according to claim 1, characterized in that: The second take-up roller (4) has a slot inside, and the two ends of the U-shaped frame (6) are slidably connected to the inside of the two third connecting parts (5).

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