Tensioner with springback blocking function

By introducing a sliding control mechanism of the positioning plate and the snail into the tensioner, the problem that the existing tensioners cannot control the ratchet release speed is solved, and a safer operating process is achieved.

CN222921471UActive Publication Date: 2025-05-30NINGBO YINZHOU MAIRUO IMP & EXP CO LTD
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Patent Information

Application Number
CN202422146964.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-02
Publication Date
2025-05-30
Estimated Expiration
2034-09-02

AI Technical Summary

Technical Problem

Existing tensioners cannot control the release speed of the ratchet, causing the quick release of the ratchet to potentially injure the operator.

Method used

A tensioner with rebound barrier function is designed. By providing a positioning plate and a clamping plate between the handle and the housing, the sliding of these components is used to control the contact between the ratchet and the positioning plate, and thus control the rebound speed of the ratchet.

Benefits of technology

By controlling the sliding of the positioning plate, the release rebound speed of the ratchet can be effectively controlled, which increases the safety of the operation process.

✦ Generated by Eureka AI based on patent content.

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Abstract

The tensioner with the springback blocking function comprises a shell, a ratchet wheel and a handle which are in pivot joint through a pivot joint shaft, the first end of the shell is provided with a fixing shaft used for fixing a first rope belt, and the second end of the shell is provided with a first connecting part used for being in pivot joint with the ratchet wheel and the handle; the handle comprises a pressing end and a second connecting part, the pivoting shaft is connected with the second rope belt, and the first connecting part is provided with a rope winding mechanism used for winding the second rope belt; the shell and the handle are respectively provided with a clamping plate and a positioning plate which can slide along the shell and the handle under stress, and the first connecting part is provided with a releasing part, a positioning part and a bouncing resisting part; when the handle falls on the positioning part, the clamping plate and the positioning plate abut against teeth on the ratchet wheel respectively. When the positioning plate falls on the releasing part, the positioning plate is not in contact with the ratchet wheel, and the first pushing piece of the second connecting part ejects the clamping plate to be away from the ratchet wheel; when the positioning plate falls on the bounce resisting part, the second pushing and abutting piece of the second connecting part ejects the clamping plate away from the ratchet wheel, and whether the positioning plate abuts against the ratchet wheel or not is controlled by controlling the positioning plate to slide.
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Description

Technical Field

[0001] The present disclosure relates to the technical field of tensioners, and particularly to a tensioner with a function of rebounding and blocking. Background Art

[0002] Tensioners are used to fix goods during the transportation, movement, shipment or storage of goods. They are easy to operate, and the goods will not fall off after being locked, effectively avoiding damage to the goods. Current tensioners mainly consist of a bracket, a belt shaft, a handle, a winding spring and two ratchets rotatably connected to the bracket. When in use, the binding belt is threaded onto the belt shaft, and by pressing the handle, the two ratchets rotate relative to the bracket, thereby driving the belt shaft to rotate and wind the binding belt to tighten and realize the bundling of the goods.

[0003] Existing tensioners cannot control the release speed of the ratchet, and the rapid release of the ratchet is likely to injure on-site operators. Summary of the Utility Model

[0004] The purpose of the present disclosure is to provide a tensioner with a safer ratchet release process.

[0005] To achieve the above purpose, the present disclosure adopts the following technical solutions:

[0006] A tensioner with a function of rebounding and blocking, comprising a housing, a ratchet and a handle. A fixed shaft for fixing a first cord is provided at the first end of the housing, and a first connecting portion for pivotally connecting the ratchet and the handle is provided at the second end of the housing;

[0007] The handle includes a pressing end and a second connecting portion. The second connecting portion is installed inside the first connecting portion, and the ratchet is installed inside the second connecting portion. A pivot shaft passes through the first connecting portion, the second connecting portion and the ratchet and rotates synchronously with the ratchet; the pivot shaft is connected to a second cord, and a cord winding mechanism connecting the pivot shaft is provided on one side surface of the first connecting portion;

[0008] A clamping plate that can slide along it under force is provided between the two side portions of the housing, and a positioning plate that can slide along it under force is provided between the two side portions of the handle. A release portion, a positioning portion and a spring blocking portion are sequentially provided on the outer edge of the first connecting portion in the direction towards the first end of the housing;

[0009] When the handle falls on the positioning portion, the clamping plate and the positioning plate respectively abut against the teeth on the ratchet; when the positioning plate falls on the release portion, the positioning plate does not contact the ratchet, and a first pushing member of the second connecting portion pushes the clamping plate away from the ratchet;

[0010] When the positioning plate lands on the bullet-blocking part, the second pushing member of the second connecting part pushes the clamping plate away from the ratchet wheel, and at this time, whether the positioning plate contacts the ratchet wheel is controlled by controlling the sliding of the positioning plate.

[0011] Preferably, the positioning plate includes a first abutting block for abutting against the ratchet wheel and a first push rod. A first elastic member is sleeved outside the first push rod. A first blocking member through which the first push rod passes is provided at the pressing end. The first elastic member is restricted between the first abutting block and the first blocking member. The first push rod is further connected to a pressing member for applying force to it.

[0012] More preferably, first sliding grooves corresponding to the first abutting block are respectively provided on two side portions of the handle, and the side portion of the first abutting block is restricted to move within the first sliding grooves.

[0013] Preferably, the clamping plate includes a second abutting block for abutting against the ratchet wheel and a second push rod. A second elastic member is sleeved outside the second push rod. A second blocking member through which the second push rod passes is provided at the first end of the housing. The second elastic member is restricted between the second abutting block and the second blocking member.

[0014] More preferably, second sliding grooves corresponding to the second abutting block are respectively provided on two side portions of the housing, and the side portion of the second abutting block is restricted to move within the second sliding grooves.

[0015] Preferably, the release portion is in the form of a first groove, and the first groove is arranged such that when the positioning plate lands in the first groove, the positioning plate is separated from the ratchet wheel.

[0016] Preferably, the positioning portion is in the form of a second groove, and the handle adjusts the tightness of the second cord by pivoting within the range of the second groove.

[0017] Preferably, the bullet-blocking part is in the form of a third groove, and the third groove plays a role in limiting the positioning plate.

[0018] Preferably, the first pushing member and the second pushing member are respectively arc-shaped protrusions on the second connecting part, and the second pushing member is arranged on the side close to the pressing end.

[0019] Preferably, the cord winding mechanism includes a leaf spring and a housing provided outside the leaf spring, and the leaf spring is connected to the pivot shaft.

[0020] The technical solution claimed in the present disclosure has achieved the following beneficial effects:

[0021] When the handle is pivoted to the bullet-blocking part, the positioning plate is slid away from the ratchet wheel, and the ratchet wheel is not stressed. At this time, the ratchet wheel tension is released, and the ratchet wheel quickly rebounds and rotates, and the second rope belt is retracted. Slide the positioning plate towards the ratchet wheel to make the positioning plate abut against the ratchet wheel. At this time, the ratchet wheel is stressed, blocking the rebound of the ratchet wheel and making it rotate slowly during rebound. Therefore, the speed of the ratchet wheel's release and rebound can be controlled by repeatedly controlling the sliding of the positioning plate, increasing the safety of the operation process. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only the embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.

[0023] Figure 1 Explosion schematic diagram of the tensioner Figure 1 。

[0024] Figure 2 Explosion schematic diagram of the tensioner Figure 2 。

[0025] Figure 3 Stereoscopic schematic diagram of the tensioner in the released state.

[0026] Figure 4 Cross-sectional schematic diagram of the tensioner in the released state.

[0027] Figure 5 Schematic diagram of the tensioner in the locked state.

[0028] Figure 6 Schematic diagram of the tensioner in the bullet-blocking state Figure 1 。

[0029] Figure 7 Schematic diagram of the tensioner in the bullet-blocking state Figure 2 。

[0030] Reference numerals:

[0031] 1 - housing; 2 - ratchet wheel; 3 - handle; 4 - fixed shaft; 5 - pivot shaft; 6 - rope winding mechanism; 7 - clamping plate; 8 - positioning plate; 9 - release part; 10 - positioning part; 11 - bullet-blocking part; 12 - first pushing member; 13 - second pushing member; 14 - first abutting block; 15 - first push rod; 16 - first blocking member; 17 - pressing member; 18 - first chute; 19 - second abutting block; 20 - second push rod; 21 - second blocking member; 22 - second chute; 23 - leaf spring; 24 - outer shell. Detailed Description of the Embodiments

[0032] To make the objectives, technical solutions, and beneficial effects of the embodiments in the present disclosure clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present disclosure with reference to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present disclosure without creative efforts belong to the scope of protection of the present disclosure.

[0033] Referring to the attached Figures 1 to 7 , the tensioner with a rebound blocking function in this embodiment includes a housing 1, a ratchet 2, and a handle 3. A fixed shaft 4 for fixing a first cord (not shown in the figure) is provided at the first end of the housing, and a first connecting portion for pivotally connecting the ratchet and the handle is provided at the second end of the housing.

[0034] The handle includes a pressing end and a second connecting portion. The second connecting portion is installed inside the first connecting portion, and the ratchet is installed inside the second connecting portion. A pivot shaft 5 passes through the first connecting portion, the second connecting portion, and the ratchet and rotates synchronously with the ratchet; the pivot shaft is connected to a second cord (not shown in the figure), and a cord winding mechanism 6 for winding the second cord and connecting the pivot shaft is provided on one side surface of the first connecting portion.

[0035] A clamping plate 7 that can slide along it under force is provided between the two side portions of the housing, and a positioning plate 8 that can slide along it under force is provided between the two side portions of the handle. A release portion 9, a positioning portion 10, and a rebound blocking portion 11 are sequentially provided on the outer edge of the first connecting portion in the direction towards the first end of the housing.

[0036] When the handle lands on the positioning portion, the clamping plate and the positioning plate respectively abut against the teeth on the ratchet, and at this time the tensioning member is locked. When adjusting the tightness of the second cord, the handle can be first turned to lean towards the housing, and at this time the positioning plate will jump along the one-way teeth on the ratchet. Then the handle is turned in the reverse direction to move away from the housing, and at this time the positioning plate will drive the ratchet to rotate together, while the clamping plate will jump between the teeth of the ratchet, so that the second cord can be gradually retracted. By repeatedly operating the above two actions, the purpose of tightening the second cord can be achieved.

[0037] When the positioning plate lands on the release portion, the positioning plate does not contact the ratchet, and a first pushing member 12 of the second connecting portion pushes the clamping plate away from the ratchet, and at this time the ratchet is not stressed. When the positioning plate lands on the rebound blocking portion, a second pushing member 13 of the second connecting portion pushes the clamping plate away from the ratchet, and at this time, by controlling the sliding of the positioning plate or the pressing of the pressing end, it is controlled whether the positioning plate abuts against the ratchet.

[0038] In this embodiment, when the handle is pivoted to the bullet-blocking part and the positioning plate is slid away from the ratchet wheel, the ratchet wheel is not stressed. At this time, the ratchet wheel tension is released, and the ratchet wheel quickly rebounds and rotates, and the second cord is retracted. Sliding the positioning plate towards the ratchet wheel makes the positioning plate abut against the ratchet wheel. At this time, the ratchet wheel is stressed, blocking the rebound of the ratchet wheel and making it rotate slowly. Therefore, the speed of the ratchet wheel's release and rebound can be controlled by repeatedly controlling the sliding of the positioning plate, increasing the safety of the operation process.

[0039] In a preferred embodiment, the positioning plate includes a first abutting block 14 for abutting against the ratchet wheel and a first push rod 15. A first elastic member is sleeved outside the first push rod. A first blocking member 16 through which the first push rod passes is provided at the pressing end. The first elastic member is restricted between the first abutting block and the first blocking member. The first push rod is further connected to a pressing member 17 for applying a force to it to make it slide.

[0040] In a more preferred embodiment, first sliding grooves 18 corresponding to the first abutting block are respectively provided on two side portions of the handle. The side portion of the first abutting block is restricted to move within the first sliding grooves.

[0041] In a preferred embodiment, the clamping plate includes a second abutting block 19 for abutting against the ratchet wheel and a second push rod 20. A second elastic member is sleeved outside the second push rod. A second blocking member 21 through which the second push rod passes is provided at the first end of the housing. The second elastic member is restricted between the second abutting block and the second blocking member.

[0042] In a more preferred embodiment, second sliding grooves 22 corresponding to the second abutting block are respectively provided on two side portions of the housing. The side portion of the second abutting block is restricted to move within the second sliding grooves.

[0043] In an exemplary structure, the release part is in the form of a first groove, and the first groove is arranged such that when the positioning plate falls into the first groove, the positioning plate is separated from the ratchet wheel (refer to Figure 3 and Figure 4 ). The positioning part is in the form of a second groove, and the handle adjusts the tightness of the second cord by pivoting within the second groove (refer to Figure 5 ). The bullet-blocking part is in the form of a third groove, and the third groove is used to limit the positioning plate during the process of adjusting the ratchet wheel tension (refer to Figure 6 and Figure 7 ).

[0044] In a preferred embodiment, the first pushing member and the second pushing member are respectively arc-shaped protrusions on the second connecting portion, and the second pushing member is disposed on the side close to the pressing end. The rope winding mechanism includes a leaf spring 23 and a housing 24 disposed outside the leaf spring, and the leaf spring is connected to the pivot shaft.

[0045] The above-described embodiments are merely exemplary descriptions of the present disclosure and do not limit the scope of the present disclosure. Without departing from the design spirit of the present disclosure, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present disclosure shall fall within the protection scope determined by the present disclosure.

Claims

1. A tensioner with rebound blocking function, characterized in that: It comprises a housing, a ratchet and a handle, wherein a fixing shaft for fixing a first rope belt is provided at a first end of the housing, and a first connecting portion for pivotally connecting the ratchet and the handle is provided at a second end of the housing; The handle comprises a pressing end and a second connecting portion, the second connecting portion is mounted on the inner side of the first connecting portion, the ratchet is mounted on the inner side of the second connecting portion, the pivot shaft passes through the first connecting portion, the second connecting portion and the ratchet respectively and rotates synchronously with the ratchet; the pivot shaft is connected to the second rope, and a rope winding mechanism connected to the pivot shaft is provided on one side of the first connecting portion; A clamping plate capable of sliding along the side thereof under force is disposed between the two side portions of the shell, a positioning plate capable of sliding along the side thereof under force is disposed between the two side portions of the handle, and a release portion, a positioning portion and a bullet-stopping portion are sequentially disposed on the outer edge of the first connecting portion in a direction toward the first end of the shell; When the handle falls on the positioning portion, the clamping plate and the positioning plate respectively contact the teeth on the ratchet; when the positioning plate falls on the releasing portion, the positioning plate does not contact the ratchet, and the first pushing member of the second connecting portion pushes the clamping plate away from the ratchet; When the positioning plate falls on the bullet-blocking portion, the second push member of the second connecting portion pushes the clamping plate away from the ratchet. At this time, the sliding of the positioning plate is controlled to control whether the positioning plate contacts the ratchet.

2. The tensioner according to claim 1, characterized in that: The positioning plate includes a first resistance block and a first push rod for resisting the ratchet, a first elastic member is arranged outside the first push rod, a first blocking member for the first push rod to pass through is arranged at the pressing end, the first elastic member is restricted between the first resistance block and the first blocking member, and the first push rod is also connected to a pressing member for applying force thereto.

3. The tensioner according to claim 2, characterized in that: The two side portions of the handle are respectively provided with first sliding grooves corresponding to the first abutting blocks, and the side portions of the first abutting blocks are restricted to move in the first sliding grooves.

4. The tensioner according to claim 1, characterized in that: The clamping plate includes a second abutment block and a second push rod for abutting the ratchet, a second elastic member is disposed outside the second push rod, a second blocking member for the second push rod to pass through is disposed at the first end of the shell, and the second elastic member is confined between the second abutment block and the second blocking member.

5. The tensioner according to claim 4, characterized in that: The two side portions of the housing are respectively provided with second sliding grooves corresponding to the second abutting block, and the side portions of the second abutting block are restricted to move in the second sliding grooves.

6. The tensioner according to claim 1, characterized in that: The release portion is provided in the form of a first groove, and the first groove is configured so that the positioning plate is separated from the ratchet when the positioning plate falls into the first groove.

7. The tensioner according to claim 1, characterized in that: The positioning portion is in the form of a second groove, and the handle adjusts the tightness of the second rope by pivoting within the range of the second groove.

8. The tensioner according to claim 1, characterized in that: The spring-blocking portion is in the form of a third groove, and the third groove serves to limit the positioning plate.

9. The tensioner according to claim 1, characterized in that: The first pushing member and the second pushing member are arc-shaped protrusions on the second connecting portion respectively, and the second pushing member is arranged on a side close to the pressing end.

10. The tensioner according to claim 1, characterized in that: The rope winding mechanism comprises a leaf spring and a shell arranged outside the leaf spring, and the leaf spring is connected to the pivot shaft.