Rope belt tensioner

Abstract

The utility model discloses a rope belt tensioner, belongs to the cargo binding technology, and aims to solve the problems that the speed of the conventional automatic tensioner cannot be adjusted and the conventional automatic tensioner can not be stopped randomly when a rope belt is wound, and a hook can be rebounded due to inertia to impact a product and even hurt people. The winding disc is rotationally configured to be used for winding and releasing the rope belt, and the winding spring applies winding elastic force for winding the rope belt to the winding disc. A damping assembly is configured for the winding disc, the damping assembly comprises a follow-up gear, a damping gear and a damping releasing component, the follow-up gear is configured to rotate synchronously with the winding disc, and the damping gear is movably configured and keeps in damping engagement with the follow-up gear. The damping releasing component is movably arranged, and when external force for releasing the damping meshing is applied to the damping releasing component, the damping releasing component enables the damping gear to be disengaged from the follow-up gear to weaken or release the damping meshing. Rotation and stop of the winding disc are controlled through damping meshing, and the situation that when the rope belt is wound, the hook rebounds due to inertia and collides products or even hurts people is avoided.

Description

Technical Field

[0001] The utility model belongs to cargo bundling technology, and in particular relates to a rope tensioner which can be automatically contracted and the contraction force and length of which can be manually controlled. Background Art

[0002] The rope tensioner is suitable for various occasions where cargo can be loaded and needs to be tied and fastened.

[0003] Currently, most traditional rope tensioners on the market cannot automatically retract the rope; during the process of untying and unloading goods, users must spend a lot of time to untangle the entangled webbing and manually rewind the pulled webbing.

[0004] Although some tensioners that can automatically rewind the rope can tighten the webbing with one click, the speed of the rope cannot be adjusted because the reel is not constrained during rewinding, and the rope cannot be stopped at will during the rewinding process. The metal hook at the end of the webbing will rebound due to inertia, hitting the product and possibly causing injury. Utility Model Content

[0005] The technical problem to be solved and the technical task proposed by the present invention is to overcome the defects of the existing automatic rope tensioner that the speed cannot be adjusted during the rope winding process and cannot be stopped at will, which causes the metal hook to hit the product due to inertia rebound and may injure people. A rope tensioner is provided that applies damping when releasing and winding the rope, controls the speed of releasing and winding the rope, and effectively avoids the hook from accidentally injuring the user due to inertia rebound during the rope winding process.

[0006] To achieve the above-mentioned purpose, the rope tensioner of the present invention includes a winding disk and a winding spring. The winding disk is configured to rotate for winding and releasing the rope, and the winding spring applies a winding elastic force to the winding disk to wind up the rope; its characteristics are: a damping assembly is configured for the winding disk, the damping assembly includes a follower gear, a damping gear and a damping release component, the follower gear is configured to rotate synchronously with the winding disk, the damping gear is movably configured and maintains damping engagement with the follower gear, the damping release component is movably configured and when an external force to release the damping engagement is applied to the damping release component, the damping release component prompts the damping gear to disengage from the follower gear to weaken or release the damping engagement.

[0007] The synchronous rotation of the follower gear and the take-up reel means that they rotate and stop at the same time, thereby controlling the rotation, stop, and speed of the take-up reel by controlling the rotation, stop, and speed of the follower gear. The damping meshing of the damping gear and the follower gear means that when the follower gear and the take-up reel rotate together, the damping is generated by the slippage of the damping gear and the follower gear to control the rotation, stop, and speed of the take-up reel, rather than the meshing of the teeth in the gear transmission mechanism.

[0008] As the reel rotates to wind or release the cord, the damping meshing between the damping gear and the follower gear controls the reel's rotation, stopping, and speed. This effectively prevents the hook from rebounding due to inertia during the reeling process and accidentally injuring the user's cord tensioner. Furthermore, because the reel is damped, it prevents reverse rotation and the reeled cord is prevented from being rewound.

[0009] Preferably, the follower gear is coaxially arranged with the winding reel, which can simplify the structure.

[0010] Preferably, the damping gear is configured to swing so as to control the movement of the damping gear.

[0011] Preferably, the damping gear maintains damping engagement with the follower gear by the elastic force of the first elastic element. No matter what posture the rope tensioner is in during use, the damping engagement can always be maintained.

[0012] Preferably, the damping release member is a button, and the button is configured to weaken or release the damping engagement when pressed, so as to facilitate operation.

[0013] Preferably, the rope tensioner includes a bracket having a first wall and a second wall spaced apart, and the reel is rotatably mounted between the first wall and the second wall of the bracket. Accordingly, the reel is placed in the middle of the rope tensioner, resulting in a compact product structure and uniform force distribution.

[0014] Preferably, a first side cover is mounted on the outer side of the first wall of the bracket, the damping assembly is mounted between the first wall and the first side cover, the follower gear and the damping gear are shielded by the first side cover, and the damping release member is exposed through the first side cover for operation. Accordingly, the damping assembly is not easily obstructed during use, facilitating operation of winding the rope.

[0015] Preferably, a second side cover is mounted on the outer side of the second wall of the bracket, and the winding spring is shielded in the second side cover. In this way, the plane spiral spring is prevented from occupying the diameter space of the winding disk, and the length of the winding rope of the winding disk is increased.

[0016] Preferably, the first and second walls of the bracket are mounted on a rotating shaft, the take-up reel and follower gear are operatively mounted on the rotating shaft, and the take-up spring is a planar spiral spring, the outer end of which is fixed to the second wall of the bracket, and the inner end of which is fixed to the rotating shaft. "Assembled operatively on the rotating shaft" means rotating or stopping rotation with the rotating shaft, rather than rotating relative to the rotating shaft. This ensures that the take-up reel and follower gear rotate synchronously.

[0017] Preferably, the rope tensioner comprises a locking member, a handle and a pawl member;

[0018] A ratchet is provided on the reel;

[0019] The locking member is movably assembled on the bracket and is shifted between a first engaged position and a first disengaged position. When the locking member is in the first engaged position, the locking member is in one-way engagement with the ratchet of the reel by the elastic force of the second elastic element. When the locking member is in the first disengaged position, the locking member is disengaged from the ratchet of the reel.

[0020] The handle is rotatably assembled on the bracket;

[0021] The pawl member is movably assembled on the handle and is shifted between a second engaged position and a second disengaged position. When the pawl member is in the second engaged position, it maintains one-way engagement with the ratchet wheel of the reel. When the pawl member is in the second disengaged position, it is disengaged from the ratchet wheel of the reel.

[0022] The one-way engagement allows the reel to rotate in the direction of reeling in the rope and prevents the reel from rotating in the direction of releasing the rope;

[0023] Furthermore, when the locking member is in the first engaged position and the pawl member is in the second engaged position, the reel is pushed step by step by the reciprocating rotation of the handle to tighten the rope after the rope is tied. When the locking member is in the first disengaged position and the pawl member is in the second disengaged position, the reel is allowed to release the rope and the reel rope so that the rope can be led out.

[0024] Preferably, the bracket is provided with a positioning groove and a limiting groove, and the pawl member can be shifted between the positioning groove and the limiting groove as the handle rotates;

[0025] A cam portion is provided on the handle;

[0026] When the pawl member is located in the positioning groove, the pawl member is located in the second disengaged position, the cam portion pushes the locking member to the first disengaged position, and the pawl member and the locking member are disengaged from the ratchet wheel of the winding disk; when the pawl member is located in the limiting groove, the pawl member is located in the second engaged position, the cam portion avoids the locking member and makes the locking member located in the first engaged position, and the pawl member and the locking member maintain one-way engagement with the ratchet wheel of the winding disk.

[0027] Accordingly, the working mode of the rope tensioner can be switched by turning the handle, which is convenient to operate.

[0028] Preferably, the handle is provided with a blocking portion and a first arc guide surface smoothly connected between the cam portion and the blocking portion, thereby limiting the rotation range of the handle and ensuring smooth rotation of the handle.

[0029] Preferably, the bottom surface of the limiting groove is a second arc guide surface for guiding the movement of the pawl member in the limiting groove.

[0030] Preferably, the pawl member is swingably mounted on the handle and positioned within the positioning slot or the limiting slot by the elastic force of a third elastic element. When the pawl member shifts between the positioning slot and the limiting slot, the elastic force of the third elastic element is overcome, causing the pawl member to flip out of the positioning slot or the limiting slot. This ensures that the pawl member is securely positioned within the positioning slot or the limiting slot, placing the strap tensioner in the corresponding operating mode. Furthermore, by overcoming the elastic force of the third elastic element and causing the pawl member to flip out of the positioning slot or the limiting slot, the handle can be smoothly rotated to switch the strap tensioner's operating mode.

[0031] Preferably, the pawl member is provided with a protrusion, and the pawl member is located in the positioning groove or the limiting groove through the protrusion. Accordingly, the cooperation between the pawl member and the positioning groove or the limiting groove is simplified, the movement stroke of the pawl member in the limiting groove is increased, and it is beneficial to quickly tighten the rope belt.

[0032] Preferably, the handle and the reel are coaxially mounted on the bracket, and the handle has a first arm and a second arm spaced apart from each other. The first arm abuts against the inner side of the first wall and is rotatably mounted to the first wall, while the second arm abuts against the inner side of the second wall and is rotatably mounted to the second wall. Thus, the handle and the bracket are axially symmetrical, receiving uniform force and being less likely to deform during operation.

[0033] One end of the bracket is fixedly provided with an end cap, which is provided with a through hole, and the rope wound on the winding drum is passed through the through hole. Accordingly, when the rope is wound or released, the through hole guides the rope, ensuring smooth winding or release of the rope.

[0034] The utility model has the following advantages:

[0035] 1. A gear train structure is used to achieve damping and control the automatic reeling of the rope. The damping engagement is weakened or released by operating the damping release member, which is easy to operate and saves effort. While ensuring safety, it also significantly saves labor costs.

[0036] 2. The control structure uses less space and drives longer ropes, so that the product can be tied in a larger range and with more circles. The tensioner specification is one inch and the rope length reaches 3.2 meters.

[0037] 3. Ensure the overall appearance of the product is neat while ensuring complete functions and minimal structure.

[0038] 4. During use, the damping release member is used for overall control, making operation simple. Operating the damping release member corresponds to rewinding and stopping the rope. Therefore, the repeated operation of pulling up and retrieving the rope required by traditional tensioners is eliminated in this utility model.

[0039] 5. The end cap not only serves as a decorative feature but also acts as a restraint for the rope. It helps keep the rope neatly wound around the reel during winding, and also ensures that the rope is pulled out in one direction, preventing it from getting caught on other objects or parts. It also prevents the hook at the end of the rope from striking or damaging other parts of the tensioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 This is an isometric view of the rope tensioner of the present invention;

[0041] Figure 2 for Figure 1 The structural exploded diagram of the rope tensioner shown;

[0042] Figure 3 for Figure 2 An enlarged schematic diagram of the bracket, rotating shaft and reel in FIG.

[0043] Figure 4 for Figure 2 An enlarged schematic diagram of the bracket, handle, locking member and pawl member in FIG;

[0044] Figure 5 for Figure 2 An enlarged schematic diagram of the bracket, shaft, damping assembly and first side cover in FIG;

[0045] Figure 6 for Figure 2 An enlarged schematic diagram of the bracket, the winding spring and the second side cover;

[0046] Figure 7 for Figure 1 An orthographic schematic diagram of the rope tensioner configured with a rope and a hook;

[0047] Figure 8 for Figure 7 Schematic diagram of the internal structure of the left viewing direction;

[0048] Figure 9 This is a schematic diagram of the internal structure of the rope tensioner of the utility model in the storage state;

[0049] Figure 10 This is a schematic diagram of the internal structure of the rope tensioner of the present invention in the state of releasing the rope and rewinding the rope;

[0050] Figure 11 This is a schematic diagram of the internal structure of the rope tensioner of the present invention when the rope is tightened;

[0051] Description of the numbers in the figure:

[0052] 100 reel, 101 ratchet;

[0053] 200 winding spring, 201 second side cover,

[0054] 300 rope, 301 end cap, 302 through hole, 303 first hook, 304 fixing pin, 305 connecting member, 306 second hook;

[0055] 400 damping assembly, 401 follower gear, 402 damping gear, 403 damping release member, 404 first elastic element, 405 first side cover, 406 pin, 407 fourth elastic element

[0056] 500 bracket, 501 first wall, 502 second wall, 503 positioning groove, 504 limiting groove, 505 second arc guide surface, 506 column, 507 flat hole, 508 rotating sleeve,

[0057] 600 shaft, 601 slit, 602 plane

[0058] 700 locking member, 701 second elastic element

[0059] 800 handle, 801 cam portion, 802 blocking portion, 803 first arc guide surface, 804 first arm, 805 second arm, 806 rubber coating, 807 hole position.

[0060] 900 pawl component, 901 third elastic element, 902 protrusion, 903 pressing portion, 904 foot. DETAILED DESCRIPTION

[0061] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0062] The terms "including" and "having" and any variations thereof in the description and claims of the present utility model are intended to cover non-exclusive inclusions. For example, a method or product that includes a series of technical features is not necessarily limited to those technical features clearly listed, and may also include other technical features that are not clearly listed and can be included in the method or product.

[0063] In the description of the present invention, it should be understood that the technical features defined by the terms "first", "second", "third" and other sequential concepts are only for the purpose of clearly describing the defined technical features so that the defined technical features can be clearly distinguished from other technical features, and do not represent such naming in actual implementation. Therefore, it cannot be understood as a limitation on the present invention.

[0064] The present invention is described in detail below with reference to specific embodiments and accompanying drawings.

[0065] like Figure 1 、 Figure 3 、 Figure 5 、 Figure 7-8 As shown, the rope tensioner includes a reel 100 and a reel spring 200. The reel 100 is configured to reel and release the rope 300. The reel spring 200 applies a reeling elastic force to the reel 100. That is, under the reeling elastic force provided by the reel spring, the reel can Figure 10 In the illustrated position, counterclockwise rotation rewinds the released cord. The cord wound on the reel, when pulled outward, overcomes the reel spring's reeling force, causing the reel to rotate in the opposite direction, releasing the cord. The reel spring generates a torsional force as the cord is pulled out, acting as a reeling force. This torsional force increases as the cord is pulled out, until it reaches a threshold value after the cord is fully extended, which is ideally balanced with the length of the cord pulled out.

[0066] In particular, Figure 2 、 Figure 5 As shown, a damping assembly 400 is configured for the winding reel 100, and the damping assembly 400 includes a follower gear 401, a damping gear 402 and a damping release member 403. The follower gear 401 is configured to rotate synchronously with the winding reel 100, the damping gear 402 is movably configured and maintains damping engagement with the follower gear 401, and the damping release member 403 is movably configured and when an external force is applied to the damping release member to release the damping engagement, the damping release member prompts the damping gear 402 to disengage from the follower gear 401 to weaken or release the damping engagement.

[0067] Therefore, when the rope is pulled out, the follower gear 401 rotates synchronously with the take-up reel 100, while the damping gear 402 does not rotate. Because the damping gear 402 maintains a damping mesh with the follower gear 401, it damps the take-up reel. That is, while the follower gear rotates, it slides relative to the damping gear, intermittently being blocked by the damping gear. Because the take-up reel is damped, it does not reverse, and the pulled rope is not rewound. Due to the damping mesh, when the rope is released, causing the take-up reel to rotate, the teeth of the follower gear 401 slide relative to the teeth of the damping gear 402. As the teeth slide past each other, a rattling sound is produced.

[0068] Conversely, when rewinding the released rope, an external force is applied to the damping release member 403 to release the damping engagement, causing the damping gear 402 to disengage from the follower gear 401, thereby releasing the damping engagement. Under the action of the reel spring's reeling force, the reel reels the rope. During the reeling process, the damping release member can be released, removing the external force applied to the damping release member to release the damping engagement, restoring the damping engagement, and ceasing the reel's reeling of the rope.

[0069] During both the release and rewinding of the rope, the damping meshing stops the reel's rotation. Therefore, the damping meshing between the damping gear and the follower gear is analogous to the coordination between a pawl and a ratchet, with the damping gear acting as the pawl and the follower gear as the ratchet. As shown in the figure, follower gear 401 is a conventional circular external gear with teeth distributed along its entire circumference. Damping gear 402, on the other hand, has only a few teeth distributed along a small portion of its circumference. The damping gear itself is not a complete gear, but rather a curved rod. This provides the damping gear with greater flexibility.

[0070] Specifically, such as Figure 2 、 Figure 3 、 Figure 5 As shown, the follower gear 401 and the take-up reel 100 are assembled together on a rotating shaft 600, which is provided with a flat surface 602. The follower gear 401 and the take-up reel 100 have through-holes whose cross-sections match the cross-section of the rotating shaft. These through-holes fit onto the rotating shaft like a key in a keyway, allowing the follower gear, the take-up reel, and the rotating shaft to rotate or stop synchronously. In other words, the take-up reel and the follower gear are assembled to the rotating shaft in a follower manner. The damping gear 402 is pivotally mounted to the bracket 500 via a pin 406 at its center. Furthermore, the damping gear 402 maintains a damped meshing engagement with the follower gear 401 due to the elastic force of a first elastic element 404. This first elastic element 404 is a helical tension spring, one end of which is connected to the upper end of the damping gear 402 and the other end to a post 506 of the bracket 500. This allows the teeth of the damping gear to mesh with those of the follower gear. The damping release member 403 is a button that corresponds to the upper end of the damping gear 402. When pressed, the button applies downward pressure to the upper end of the damping gear 402, causing the damping gear 402 to swing about the pin 406 and move the lower end of the damping gear 402 away from the follower gear 401, thereby reducing or releasing the damping engagement. To reset the damping release member after being pressed, a fourth elastic element 407 is provided on the damping release member 403. The fourth elastic element 407 shown in the figure is a helical compression spring supported on the damping release member.

[0071] In the illustrated structure, the bracket 500 serves as the base for mounting the components of the entire strap tensioner. Figure 3 、 Figure 6As shown, the bracket 500 has a first wall 501 and a second wall 502 spaced apart from each other. The reel 100 is located between the first wall 501 and the second wall 502 and is rotatably assembled to the bracket 500 via a rotating shaft 600 .

[0072] like Figure 2 、 Figure 5 As shown, a first side cover 405 is assembled on the outer side of the first wall 501 of the bracket 500, the damping assembly 400 is assembled between the first wall 501 and the first side cover 405, the follower gear 401 and the damping gear 402 are shielded by the first side cover 405, and the damping release component 403 is exposed from the first side cover 405 for operation.

[0073] like Figure 2 、 Figure 6 As shown, the second side cover 201 is assembled on the outer side of the second wall 502 of the bracket, and the winding spring 200 is shielded in the second side cover 201. In addition, the rotating shaft 600 is passed through the first wall 501 and the second wall 502 of the bracket and is rotated together with the first wall and the second wall. The winding spring 200 is a flat spiral spring, and the outer end of the flat spiral spring is fixed to the second wall of the bracket, such as being hooked on a column on the outer side of the second wall. The inner end of the flat spiral spring is fixed to the rotating shaft. In the illustrated structure, the rotating shaft 600 extends to the outer side of the second wall and is provided with a slit 601 on the extended section, and the inner end of the flat spiral spring is clamped in the slit. In view of this, as the winding disk and the rotating shaft rotate, the flat spiral spring deforms and generates a torsional force.

[0074] Further, such as Figure 2 、 Figure 4 As shown, the rope tensioner includes a locking member 700, a handle 800, and a pawl member 900. A ratchet 101 is provided on a winding reel 100. Specifically, the winding reel 100 is a cylindrical winding shaft with a circular plate fixedly disposed at each end. The ratchet is formed by gear teeth distributed on the circumferential edge of the circular plate.

[0075] The locking member 700 is movably mounted on the bracket 500 and can be shifted between a first engaged position and a first disengaged position. Specifically, the locking member 700 is in the form of a plate, with corresponding flat holes 507 provided on the first and second walls 501 and 502 of the bracket. The locking member 700 has two ends positioned within the corresponding flat holes on the first and second walls, respectively, and can be moved within the flat holes to either the first engaged position or the first disengaged position. When in the first engaged position, the locking member 700 maintains one-way engagement with the ratchet wheel of the reel due to the elastic force of the second elastic element 701 and can be pushed away from the ratchet wheel. When in the first disengaged position, the locking member is disengaged from the ratchet wheel of the reel.

[0076] like Figure 3 、 Figure 4As shown, the handle 800 is coaxially mounted on the bracket 500 with the winding reel 100. In the illustrated structure, a rotating sleeve 508 is provided on the inner side of the first wall 501 and the inner side of the second wall, through which the rotating shaft 600 passes. The handle 800 has a first arm 804 and a second arm 805 spaced apart. The first arm 804 abuts against the inner side of the first wall 501 and rotates around the corresponding rotating sleeve to be mounted on the first wall. The second arm 805 abuts against the inner side of the second wall 502 and rotates around the corresponding rotating sleeve to be mounted on the second wall. Thus, a space is formed between the first arm 804 and the second arm 805 of the handle for mounting the pawl member 900. This arm structure has a suitable contour for gripping and operation, and provides a structural foundation for mounting the pawl member, making the structure compact and convenient for manually controlling the pawl member, that is, operating the pawl member while holding the handle.

[0077] In order to increase the feel and comfort of holding the handle, a rubber coating 806 is applied on the handle.

[0078] like Figure 2 、 Figure 5 As shown, the pawl member 900 is movably mounted on the handle 800 and can be shifted between a second engaged position and a second disengaged position. In the illustrated structure, corresponding holes 807 are provided on the first and second arms 804, 805 of the handle. The pawl member 900 is also a plate, with protrusions 902 on either side of one end, a pressing portion 903 extending from the middle of the other end, and feet 904 on either side of the other end. The pawl member 900 is positioned between the first and second arms 804, 805 of the handle. The feet 904 of the pawl member are located in the corresponding holes 807, acting as the fulcrum of a lever, allowing the pawl member to swing relative to the handle and swing between the second engaged position and the second disengaged position. When in the second engaged position, the pawl member maintains one-way engagement with the take-up reel's ratchet 101 via the protrusions 902. When in the second disengaged position, the protrusions 902 disengage from the take-up reel's ratchet 101.

[0079] The one-way engagement of the protrusion of the pawl member with the ratchet and the one-way engagement of the locking member with the ratchet are both defined as allowing the winding disc to rotate in the direction of winding the rope and preventing the winding disc from rotating in the direction of releasing the rope.

[0080] Furthermore, when the locking member 700 is in the first engaged position and the pawl member 900 is in the second engaged position, the reel is progressively pushed to reel in the cord by the reciprocating rotation of the handle 800. When the locking member is in the first disengaged position and the pawl member is in the second disengaged position, the reel is allowed to release and reel in the cord. Thus, the operating mode of the cord tensioner can be switched as needed.

[0081] like Figure 4As shown, both the first wall 501 and the second wall 502 of the bracket are provided with a positioning slot 503 and a limiting slot 504. The protrusion 902 of the pawl member can shift between the positioning slot and the limiting slot as the handle rotates. As the name suggests, the positioning slot is intended to position the pawl member and prevent it from moving. The limiting slot, on the other hand, is intended to limit the range of motion of the pawl member, thereby allowing it to move within the limiting slot. Positioning and limiting do not completely place the pawl member within the positioning slot or the limiting slot. In the illustrated structure, the pawl member 900 is located in the positioning slot or the limiting slot via its protrusion 902.

[0082] When the pawl member 900 is positioned in the positioning groove via the protrusion, the pawl member is in the second disengaged position. The cam portion 801 provided on the handle 800 pushes the locking member 700 to the first disengaged position, and the pawl member and the locking member are both disengaged from the ratchet wheel of the reel. Since the pawl member is positioned in this position, the pawl member and the locking member are both disengaged from the ratchet wheel of the reel, thereby allowing the reel to release the rope and take up the rope.

[0083] When the protrusion 902 of the pawl member 900 is located in the limiting groove 504, the pawl member is in the second engaged position. The cam portion 801 clears the locking member 700, allowing the locking member to return to the first engaged position due to the elastic force of the second elastic element 701. The pawl member 900 and the locking member 700 both maintain one-way engagement with the reel's ratchet wheel 101. Accordingly, by reciprocating the handle, the protrusion 902 of the pawl member moves back and forth within the limiting groove 504, stepwisely driving the reel to rotate and rewind the rope.

[0084] like Figure 4 As shown, the handle 800 is provided with a blocking portion 802 and a first arcuate guide surface 803 smoothly connected between the cam portion 801 and the blocking portion 802. The bottom surface of the limiting groove 504 forms a second arcuate guide surface 505. When the handle is rotated to tighten the strap, the first arcuate guide surface 803 slides against the locking member. When the blocking portion 802 is blocked by the locking member 700, the handle is prevented from further rotation in that direction. The protrusion 902 of the pawl member 900 slides along the second arcuate guide surface 505, thereby being guided. This ensures smooth rotation of the handle.

[0085] like Figure 5As shown, the pawl member 900 utilizes the elastic force of the third elastic element 901 to position its protrusion 902 within the positioning groove 503 or the limiting groove 504. The third elastic element 901 is shown as a torsion spring, which is supported by the handle and the pawl member to exert elastic force on the pawl member. To shift the protrusion 902 of the pawl member between the positioning groove 503 and the limiting groove 504, the pressing portion 903 of the pawl member is pressed, overcoming the elastic force of the third elastic element 901, causing the pawl member 900 to flip and the protrusion 902 to disengage from the positioning groove 503 or the limiting groove 504. The handle 800 is then rotated to pull the protrusion 902 into the limiting groove 504 or the positioning groove 503, releasing the pressing portion 903 to shift the protrusion between the positioning groove and the limiting groove.

[0086] like Figure 2 、 Figure 5 As shown, an end cap 301 is fixedly disposed at one end of the bracket 500 , and a through hole 302 is provided on the end cap 301 , and the rope 300 wound on the winding drum is passed through the through hole.

[0087] like Figure 7-8 As shown in the figure, the rope tensioner is connected to the first hook 303 at the outer end of the rope 300 for easy connection. The other end of the bracket 500 is connected to the second hook 306 via a fixing pin 304 and a connecting member 305 such as a webbing. When tying an object, the rope 300 is pulled out, the first hook 303 and the second hook 306 are hooked at the corresponding positions, and the rope is tightened to tighten the object.

[0088] The rope tensioner shown in the figure can be Figure 9-11 Status shown. Figure 9-11 The state shown also expresses the working state and usage of the rope tensioner.

[0089] like Figure 9 As shown, the rope 300 is completely rolled up to the winding drum 100, and the first hook 303 will contact the end cover 301 to pull the rope, and the protrusion 902 of the pawl member 900 is located in the limiting groove 504. At this time, the rope cannot be pulled out due to the meshing action of the pawl member 900, the locking member 700 and the ratchet 101, which can prevent the rope from being pulled out when it is accidentally pulled.

[0090] When you want to pull out the rope, Figure 9 In the state shown, the pressing portion 903 of the pawl member is pressed to overcome the elastic force of the third elastic element 901, causing the pawl member 900 to flip over and the protrusion 902 to escape from the limiting groove 504. Then, the handle 800 is rotated clockwise to drag the protrusion 902 to the positioning groove 503, releasing the pressing portion 903. Figure 10As shown, the protrusion 902 is positioned in the positioning groove 503. The pawl member 900 is in the second disengaged position, and the cam portion 801 of the handle pushes the locking member 700 to the first disengaged position. Both the pawl member 900 and the locking member 700 disengage from the ratchet wheel 101 of the reel. At this point, the rope can be pulled outward, overcoming the damping effect of the damping assembly 400. The rope is released, and the rewinding force of the planar spiral spring increases. The first hook 303 and the second hook 306 can be hooked in their respective positions.

[0091] When the rope is to be tightened, the button of the damping release member 403 is pressed to cause the damping gear 402 to disengage the follower gear 401, releasing the damping engagement. Under the action of the winding elastic force of the plane scroll spring, the winding disc 100 is driven to rotate. Figure 10 In the state shown, turn it counterclockwise to automatically reel in and pre-tighten the rope. Figure 10 In the state shown, the pressing portion 903 of the pawl member is pressed to overcome the elastic force of the third elastic element 901, causing the pawl member 900 to flip over and the protrusion 902 to escape from the positioning groove 503. Then, the handle 800 is rotated counterclockwise to drag the protrusion 902 to the limiting groove 504, releasing the pressing portion 903. Figure 9 As shown, the protrusion 902 is reset to the limiting groove 504. At this time, the locking member 700 is located at the first engagement position, the pawl member 900 is located at the second engagement position, and the handle 800 is rotated back and forth to push the reel to reel in the rope.

[0092] The detailed action of pushing the winding disc to reel in the rope belt step by step is as follows: when the handle 800 is rotated clockwise, the pawl member 900 pushes the ratchet 101, and the ratchet 101 rotates the winding disc 100 in the clockwise direction. The amplitude of the clockwise rotation is limited by the limit slot 504. If it can reach Figure 11 The teeth of the ratchet 101 slide over the locking member 700 during the clockwise rotation. Then, the handle 800 is rotated counterclockwise to reset the handle 800 to Figure 9 Position shown. Figure 9 During the reset period, the locking member 700 prevents the ratchet 101 and the reel from rotating counterclockwise, and the pawl member 900 slides over the teeth of the ratchet 101. Figure 9 The position shown is Figure 11 By rotating the handle back and forth between the positions shown, the reel can be rotated step by step in clockwise direction to tighten the rope.

[0093] When the tightened rope is to be rolled up, the handle 800 and the ratchet member 900 are placed in the Figure 10At the position shown, pull out the rope appropriately, remove the first hook and the second hook, press the button of the damping release member 403, so that the damping gear 402 disengages the follower gear 401, releases the damping engagement, and under the winding elastic force of the plane scroll spring, drives the winding disk 100 to Figure 10 In the state shown, turn the button counterclockwise to automatically rewind the rope. During the automatic rewinding process, release the button as needed to resume the damping engagement and stop the rope from being rewound quickly.

[0094] As described above, the rope tensioner controls the speed of releasing and reeling in the rope, effectively preventing the hook from accidentally injuring the user due to inertial rebound during the reeling process.

[0095] The damping meshing between the damping gear and the follower gear varies in degree of meshing, and the magnitude of the damping that needs to be overcome when pulling the release rope varies. A greater degree of meshing between the damping gear and the follower gear results in greater damping, while a smaller degree of meshing between the damping gear and the follower gear results in less damping. Therefore, when an external force is applied to the damping release member to release the damping meshing, the degree to which the damping gear disengages from the follower gear is controlled to weaken or release the damping meshing. When the damping gear completely disengages from the follower gear, the damping meshing is completely released. When the damping gear leaves the follower gear but still maintains meshing, but the degree of meshing decreases, the damping meshing is weakened.

Claims

1. A rope tensioner, comprising a winding disc (100) and a winding spring (200), wherein the winding disc (100) is rotatably configured to wind up and release a rope (300), and the winding spring (200) applies a winding elastic force to the winding disc (100) to wind up the rope; wherein the winding disc (100) is characterized by: A damping assembly (400) is configured for the winding reel. The damping assembly (400) comprises a follower gear (401), a damping gear (402) and a damping release member (403). The follower gear (401) is configured to rotate synchronously with the winding reel (100). The damping gear (402) is movably configured and maintains damping engagement with the follower gear (401). The damping release member (403) is movably configured and when an external force for releasing the damping engagement is applied to the damping release member, the damping release member prompts the damping gear (402) to disengage from the follower gear (401) to reduce or release the damping engagement.

2. The rope tensioner according to claim 1, characterized in that: The follower gear (401) is coaxially arranged with the winding disk (100).

3. The rope tensioner according to claim 1, characterized in that: The damping gear (402) is configured to oscillate.

4. The rope tensioner according to claim 1, characterized in that: The damping gear (402) maintains damping meshing with the follower gear (401) by means of the elastic force of the first elastic element (404).

5. The rope tensioner according to claim 1, characterized in that: The damping release member (403) is a button configured to reduce or release the damping engagement when pressed.

6. The rope tensioner according to any one of claims 1 to 5, characterized in that: The rope tensioner comprises a bracket (500) having a first wall (501) and a second wall (502) spaced apart from each other. The winding drum (100) is rotatably mounted between the first wall (501) and the second wall (502) of the bracket.

7. The rope tensioner according to claim 6, characterized in that: A first side cover (405) is assembled on the outer side of a first wall (501) of the bracket, a damping assembly (400) is assembled between the first wall (501) and the first side cover (405), a follower gear (401) and a damping gear (402) are shielded by the first side cover (405), and a damping release member (403) is exposed from the first side cover (405) for operation.

8. The rope tensioner according to claim 6, characterized in that: A second side cover (201) is assembled on the outer side of the second wall (502) of the bracket, and the winding spring (200) is shielded in the second side cover (201).

9. The rope tensioner according to claim 8, characterized in that: The first wall (501) and the second wall (502) of the bracket are assembled with a rotating shaft (600), the winding disc (100) and the follower gear (401) are assembled on the rotating shaft (600), the winding spring (200) is a flat spiral spring, the outer end of the flat spiral spring is fixed to the second wall (502) of the bracket, and the inner end of the flat spiral spring is fixed to the rotating shaft (600).

10. The rope tensioner according to claim 6, characterized in that: The rope tensioner comprises a locking member (700), a handle (800) and a ratchet member (900); A ratchet (101) is provided on the winding disc (100); The locking member (700) is movably assembled on the bracket (500) and is shifted between a first engaged position and a first disengaged position. When the locking member (700) is in the first engaged position, the locking member (700) maintains one-way engagement with the ratchet (101) of the reel by virtue of the elastic force of the second elastic element (701). When the locking member (700) is in the first disengaged position, the locking member (700) is disengaged from the ratchet of the reel. The handle (800) is rotatably assembled on the bracket (500); The pawl member (900) is movably assembled on the handle (800) and is shifted between a second engaged position and a second disengaged position. When the pawl member (900) is in the second engaged position, it maintains one-way engagement with the ratchet wheel (101) of the winding disk. When the pawl member (900) is in the second disengaged position, it disengages from the ratchet wheel (101) of the winding disk. The one-way engagement allows the reel (100) to rotate in the direction of reeling in the rope and prevents the reel from rotating in the direction of releasing the rope; Furthermore, when the locking member (700) is in the first engaged position and the pawl member (900) is in the second engaged position, the reel (100) is pushed stepwise to reel in the rope by the reciprocating rotation of the handle (800), and when the locking member (700) is in the first disengaged position and the pawl member (900) is in the second disengaged position, the reel (100) is allowed to release the rope and reel in the rope.

11. The rope tensioner according to claim 10, characterized in that: The bracket (500) is provided with a positioning groove (503) and a limiting groove (504), and the pawl member (900) can be shifted between the positioning groove (503) and the limiting groove (504) as the handle (800) rotates. The handle (800) is provided with a cam portion (801); When the pawl member (900) is located in the positioning groove (503), the pawl member (900) is located in the second disengaged position, the cam portion (801) pushes the locking member (700) to the first disengaged position, and the pawl member (900) and the locking member (700) are both disengaged from the ratchet wheel (101) of the winding disk; when the pawl member (900) is located in the limiting groove (504), the pawl member (900) is located in the second engaged position, the cam portion (801) avoids the locking member (700) and makes the locking member located in the first engaged position, and the pawl member (900) and the locking member (700) are both kept in one-way engagement with the ratchet wheel (101) of the winding disk.

12. The rope tensioner according to claim 11, characterized in that: The handle (800) is provided with a blocking portion (802) and a first arc guide surface (803) smoothly connected between the cam portion (801) and the blocking portion (802).

13. The rope tensioner according to claim 11, characterized in that: The bottom surface of the limiting groove (504) is a second arc guide surface (505).

14. The rope tensioner according to claim 11, characterized in that: The pawl member (900) is swingably assembled on the handle (800) and is located in the positioning groove (503) or the limiting groove (504) by the elastic force of the third elastic element (901). When the pawl member (900) switches between the positioning groove and the limiting groove, it overcomes the elastic force of the third elastic element so that the pawl member flips out of the positioning groove or the limiting groove.

15. The rope tensioner according to claim 11, characterized in that: The pawl member (900) is provided with a protrusion (902), and the pawl member is located in the positioning groove (503) or the limiting groove (504) through the protrusion (902).

16. The rope tensioner according to claim 10, characterized in that: The handle (800) and the winding reel (100) are coaxially assembled on the bracket (500), and the handle (800) has a first arm (804) and a second arm (805) spaced apart from each other. The first arm (804) is attached to the inner side of the first wall (501) and is rotatably assembled to the first wall, and the second arm (805) is attached to the inner side of the second wall (502) and is rotatably assembled to the second wall.

17. The rope tensioner according to claim 6, characterized in that: An end cover (301) is fixedly arranged at one end of the bracket (500), a through hole (302) is provided on the end cover (301), and the rope (300) wound on the winding drum is passed through the through hole (302).

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