Deceleration belt take-up tensioner
By designing a speed reduction belt tensioner, the braking mechanism and planetary speed reduction mechanism are used to realize automatic recycling and stable winding of the webbing, which solves the cumbersome and safety hazards during use of existing heavy-duty tighteners, and improves the safety of use and the life of the webbing.
Patent Information
- Application Number
- CN202510388559.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2025-06-06
AI Technical Summary
When using the existing heavy-duty tightener, the long webbing head needs to be broken and penetrated into the tightener, adjust the length and tighten it. It needs to be curled after use. The process is cumbersome and there are safety hazards.
A speed reduction belt tensioner is designed, including a base body, a webbing shaft, a brake mechanism and a planetary speed reduction mechanism. The brake mechanism realizes automatic recovery of webbing through retracting gears and return springs, and the planetary reduction mechanism reduces the coiling speed after conversion of high-strength coil springs through idler sets and input teeth.
It solves the cumbersome problems of long webbing heads when using it, improves the safety of use and the service life of webbing, reduces the winding speed, improves the stability and strength of the output shaft, and enhances safety.
Smart Images
Figure CN120097162A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of tensioners, in particular to a speed reduction belt tensioner. Background Art
[0002] When using the existing tensioner, the tensioner body and the long head of the webbing are required. When other light tensioners are used, the long heads are smaller and relatively easier to store and use. However, the heavy tensioner has a wider and thicker webbing and is very long. When using the long head of the webbing, the first thing to do is to break it up and pass it through the tensioner, then adjust the use length, tighten it, fix the excess webbing, and then take out the long head of the tensioner after use, and reel it up. This is very cumbersome and troublesome, and the excess long head of the webbing poses a safety hazard. Summary of the invention
[0003] The present invention provides a deceleration belt tensioner, which solves the problems raised in the above background technology.
[0004] To achieve the above object, the present invention provides the following technical solutions:
[0005] A deceleration belt tensioner comprises a base body, a belt shaft is rotatably connected to the middle of the base body, a belt is wound around the outside of the belt shaft, and a brake mechanism and a planetary deceleration mechanism are arranged on both sides of the base body;
[0006] The planetary reduction mechanism comprises a reduction base fixedly connected to the side of the base body, the middle part of the reduction base is rotatably connected to an output shaft that rotates synchronously with the webbing shaft, the outer side of the reduction base is detachably connected to a reduction pressure cover, the middle part of the reduction pressure cover is rotatably connected to an input shaft, the end of the input shaft is clamped with a coil spring that matches the reduction pressure cover, the outer side of the reduction pressure cover is provided with an idler gear group that meshes with the output shaft, and the outer side of the input shaft is provided with input teeth that mesh with the idler gear group;
[0007] The braking mechanism includes a braking base fixedly connected to the side of the base body, the middle part of the braking base is rotatably connected to a retracting gear that rotates synchronously with the webbing shaft, a retracting column is arranged on the outer side of the braking base, the retracting column is rotatably connected to a retracting lever that cooperates with the retracting gear, the outer ring of the braking base is provided with a spring groove, and the inside of the spring groove is provided with a reset spring that drives the retracting lever to deflect toward the direction of the retracting gear.
[0008] As a preferred technical solution of the present invention, a brake cover is provided on the outer side of the brake base, a release button is slidably connected to the middle of the brake cover, and a wedge-shaped tooth cooperating with the retractable lever is provided at the bottom of the release button.
[0009] As a preferred technical solution of the present invention, the outer ring of the reduction base is provided with a base buckle that cooperates with the output shaft.
[0010] As a preferred technical solution of the present invention, an idler guide column is arranged on the outer side of the reduction gland, and the idler guide column is connected to the idler group.
[0011] As a preferred technical solution of the present invention, a reciprocating mechanism is provided at the end of the base body.
[0012] The present invention has the following benefits:
[0013] The present invention is applicable to a deceleration belt-winding tensioner. The combination of the webbing and the tensioner can solve the function of self-storing long belts of various specifications and lengths, avoid excess webbing residue during use, improve the safety of use, and increase the service life of the webbing. After use, the webbing does not need to be stored, which is convenient for recovery and placement. The braking mechanism can improve the use experience of the two-inch tensioner, and the user can use as much as he needs without retreating. The use is convenient. When one hand is drawing the belt, the other hand can completely hold the two-inch tensioner, and the webbing does not need to be fixed by hand. The safety factor is greatly improved, and the webbing will not be quickly recovered due to slipping out of the hands, thereby accidentally injuring the operator. The planetary deceleration mechanism significantly reduces the speed of winding after the high-strength coil spring is converted. While reducing the winding speed, the stability and strength of the output shaft are improved, and the webbing is wound more powerfully and stably, which greatly improves its safety. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0015] Figure 1 The figure is a schematic diagram of the structure of a deceleration belt tensioner.
[0016] Figure 2 This is a schematic diagram of the structure of a deceleration belt tensioner after the webbing is removed.
[0017] Figure 3 The present invention is a structural schematic diagram of a braking mechanism in a deceleration belt tensioner.
[0018] Figure 4 The figure is a schematic diagram of the structure inside the brake mechanism of a deceleration belt tensioner.
[0019] Figure 5 for Figure 4 A is a partial enlarged schematic diagram of the middle part.
[0020] Figure 6The present invention is a schematic diagram of the structure of the coordination between the retracting and releasing gear and the retracting and releasing stop lever in a deceleration belt tensioner.
[0021] Figure 7 The figure is a schematic diagram of the structure of a planetary reduction mechanism in a reduction belt tensioner.
[0022] Figure 8 The figure is a schematic diagram of the internal structure of a planetary reduction mechanism in a reduction belt tensioner.
[0023] Fig. 9 The present invention is a schematic diagram of the structure of a coil spring in a deceleration belt tensioner.
[0024] Fig.10 The figure is a schematic diagram of the structure of the coordination between the idler wheel set and the input gear in a speed reduction belt tensioner.
[0025] Fig.11 The present invention is a schematic diagram of the structure of an idler guide post in a speed reduction belt tensioner.
[0026] Fig.12 The present invention is a structural schematic diagram of a belt-retracting tensioner in which a belt shaft cooperates with a retracting and releasing gear and an output shaft respectively.
[0027] In the figure: 1. base body; 2. webbing; 3. reciprocating mechanism; 4. brake mechanism; 5. planetary reduction mechanism; 6. webbing shaft; 7. brake base; 8. brake cover; 9. release button; 10. spring slot; 11. return spring; 12. retractable lever; 13. retractable column; 14. retractable gear; 15. reduction base; 16. reduction pressure cover; 17. coil spring; 18. base buckle; 19. input shaft; 20. output shaft; 21. idler wheel group; 22. input teeth; 23. reduction slot; 24. idler wheel guide column; 25. wedge-shaped teeth. DETAILED DESCRIPTION
[0028] 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 described embodiments are only 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 creative work are within the scope of protection of the present invention.
[0029] In one embodiment, see Figure 1-Figure 12 A deceleration belt tensioner includes a base body 1, a webbing shaft 6 is rotatably connected to the middle of the base body 1, a webbing 2 is wound around the outside of the webbing shaft 6, and a brake mechanism 4 and a planetary deceleration mechanism 5 are arranged on both sides of the base body 1. The webbing shaft 6 is inserted into the base body 1, and a baffle is arranged at each end of the webbing shaft 6. One end of the webbing shaft 6 is connected to the output shaft 20, and the other end of the webbing shaft 6 is connected to the retracting gear 14.
[0030] In one case of the present embodiment, the planetary reduction mechanism 5 includes a reduction base 15 fixedly connected to the side of the base body 1, the middle part of the reduction base 15 is rotatably connected to the output shaft 20 that rotates synchronously with the webbing shaft 6, the outer side of the reduction base 15 is detachably connected to the reduction cover 16, the middle part of the reduction cover 16 is rotatably connected to the input shaft 19, the end of the input shaft 19 is clamped with a coil spring 17 that cooperates with the reduction cover 16, the outer side of the reduction cover 16 is provided with an idler group 21 that meshes with the output shaft 20, and the outer side of the input shaft 19 is provided with input teeth 22 that meshes with the idler group 21. The outer ring of the reduction base 15 is provided with a base buckle 18 that cooperates with the output shaft 20. The outer side of the reduction cover 16 is provided with an idler guide column 24, and the idler guide column 24 is connected to the idler group 21. The reduction base 15 of the planetary reduction mechanism 5 is fixed to the base body 1 by bolts. The reduction base 15 is provided with three base buckles 18 arranged in an annular manner, and an output shaft 20 is placed in the base buckle 18. The planetary reduction mechanism 5 also has a reduction gland 16. The surface of the reduction gland 16 is also provided with three idler guide posts 24 arranged in an annular manner and gland buckles. An idler group 21 is fixed on the idler guide post 24. An input shaft 19 is placed in the idler group 21. The input teeth 22 of the input shaft 19 are meshed with the idler group 21, and the idler group 21 is meshed with the output shaft 20. The shaft end of the input shaft 19 passes through the reduction slot 23 and is connected to the coil spring 17 on the back of the reduction gland 16. The installed reduction gland 16 is directly buckled with the gland buckle through the base buckle 18, and the reduction gland 16 is fixed on the reduction base 15. The reduction base 15 and the reduction gland 16 are connected by threads.
[0031] In one case of this embodiment, the brake mechanism 4 includes a brake base 7 fixedly connected to the side of the base body 1, the middle part of the brake base 7 is rotatably connected to the retracting gear 14 that rotates synchronously with the webbing shaft 6, the outer side of the brake base 7 is provided with a retracting column 13, the retracting column 13 is rotatably connected to the retracting lever 12 that cooperates with the retracting gear 14, the outer ring of the brake base 7 is provided with a spring groove 10, and the inner part of the spring groove 10 is provided with a return spring 11 that drives the retracting lever 12 to deflect toward the retracting gear 14. The outer side of the brake base 7 is provided with a brake cover plate 8, the middle part of the brake cover plate 8 is slidably connected to the release button 9, and the bottom of the release button 9 is provided with a wedge-shaped tooth 25 that cooperates with the retracting lever 12. The brake base 7 of the brake mechanism 4 is fixed to the base body 1 by bolts, and the brake base 7 of the brake mechanism 4 is provided with three annularly arranged spring grooves 10 and retracting columns 13. A retractable stop rod 12 is arranged on the retractable column 13 , a retractable gear 14 is placed in the middle of the retractable stop rod 12 , a return spring 11 is arranged in the spring slot 10 , and the return spring 11 in the spring slot 10 abuts against the back of the retractable stop rod 12 .
[0032] In one case of this embodiment, a reciprocating mechanism 3 is provided at the end of the base body 1. The reciprocating mechanism 3 is conventionally connected to the base body 1 to form a conventional tensioner.
[0033] Instructions for use of the brake mechanism 4: when the webbing 2 is extracted, the webbing 2 drives the webbing shaft 6 to rotate clockwise, and the webbing shaft 6 drives the retracting gear 14 to rotate clockwise. When the retracting gear 14 rotates, the retracting gear 14 touches the retracting stop lever 12 to push the retracting stop lever 12 open, and the webbing 2 is smoothly extracted. When the hand is separated from the webbing 2, the webbing shaft 6 rotates counterclockwise by the force of the coil spring 17. At the same time, the retracting stop lever 12 is squeezed and reset by the reset spring 11 in the spring slot 10, and the retracting stop lever 12 falls on the retracting gear 14 again. When the retracting gear 14 rotates counterclockwise, due to the shape design of the retracting stop lever 12, the retracting gear 14 and the retracting stop lever 12 will lock. The webbing shaft 6 is stuck and cannot retreat, achieving a braking effect. When it is necessary to retract the belt, directly press the release button 9, and the wedge-shaped teeth 25 of the release button 9 are directly pressed down to the position of the retracting and releasing lever 12. The retracting and releasing lever 12 is pushed open by the pressure of the wedge-shaped teeth 25, and the retracting and releasing lever 12 is separated from the retracting and releasing gear 14. The belt shaft 6 receives the force of the winding spring 17 and rotates counterclockwise, and the belt 2 is retracted.
[0034] Instructions for use of the planetary reduction mechanism 5: after receiving the force of the coil spring 17, the input shaft 19 rotates counterclockwise, the input teeth 22 and the idler gear set 21 have the same number of teeth and are in multiple relationship with the output shaft 20. When the input shaft 19 rotates three times or other times, the three idler gear sets 21 also mesh for one time or other times, and the output shaft 20 also rotates in multiple relationship. For example, the input teeth 22 have 17 teeth, the idler gear set 21 has 17 teeth, and the output shaft 20 has 51 teeth. After the input shaft 19 rotates three times, the output shaft 20 rotates one time. The planetary reduction mechanism 5 can effectively slow down the speed of the powerful coil spring 17 device to produce a more uniform but more powerful winding force.
[0035] Working principle: the planetary reduction mechanism 5 reduces the speed through gear transmission and other mechanisms. According to the law of conservation of energy, when the power is constant, the speed is inversely proportional to the torque, that is, P=T×WP is power, T is torque, and W is angular velocity. When the planetary reduction mechanism 5 rotates at a low speed, the output torque will increase. Relationship between axial force and torque: There is a certain correlation between axial force and torque. An increase in torque may increase the internal force such as shear stress on the shaft. In practical applications, the shaft must transmit torque. When the torque increases, the shaft needs to bear greater force to maintain balance and transmit power. From this perspective, the axial force will increase.
[0036] The present invention is applicable to a deceleration belt-winding tensioner. The combination of the webbing 2 and the tensioner can solve the function of self-storing long belts of various specifications and lengths, avoid the residue of excess webbing 2 during use, improve the safety of use, and increase the service life of the webbing 2. After use, the webbing 2 does not need to be stored, which is convenient for recovery and placement. The braking mechanism 4 can improve the use experience of the two-inch tensioner. You can use as much as you need without retreating. It is easy to use. When one hand is drawing the belt, the other hand can completely hold the two-inch tensioner. There is no need to fix the webbing 2 by hand. The safety factor is greatly improved, and the webbing 2 will not be quickly recovered due to slipping out of the hand, thereby accidentally injuring the operator. The planetary speed reduction mechanism 5 significantly reduces the speed of winding the high-strength coil spring 17 after conversion. While reducing the winding speed, the stability and strength of the output shaft 20 are improved, and the webbing 2 is wound more powerfully and stably, which greatly improves its safety.
[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.
Claims
1. A deceleration belt tensioner, comprising a base body, a belt shaft is rotatably connected to the middle of the base body, and a belt is wound around the outside of the belt shaft, characterized in that: It also includes a braking mechanism and a planetary reduction mechanism arranged on both sides of the base body; The planetary reduction mechanism comprises a reduction base fixedly connected to the side of the base body, the middle part of the reduction base is rotatably connected to an output shaft that rotates synchronously with the webbing shaft, the outer side of the reduction base is detachably connected to a reduction pressure cover, the middle part of the reduction pressure cover is rotatably connected to an input shaft, the end of the input shaft is clamped with a coil spring that matches the reduction pressure cover, the outer side of the reduction pressure cover is provided with an idler gear group that meshes with the output shaft, and the outer side of the input shaft is provided with input teeth that mesh with the idler gear group; The braking mechanism includes a braking base fixedly connected to the side of the base body, the middle part of the braking base is rotatably connected to a retracting gear that rotates synchronously with the webbing shaft, a retracting column is arranged on the outer side of the braking base, the retracting column is rotatably connected to a retracting lever that cooperates with the retracting gear, the outer ring of the braking base is provided with a spring groove, and the inside of the spring groove is provided with a reset spring that drives the retracting lever to deflect toward the direction of the retracting gear.
2. A deceleration belt tensioner according to claim 1, characterized in that: A brake cover plate is arranged on the outer side of the brake base, a release button is slidably connected to the middle part of the brake cover plate, and a wedge-shaped tooth cooperating with the retractable and extending stop rod is arranged at the bottom of the release button.
3. The deceleration belt tensioner according to claim 1, characterized in that: The outer ring of the reduction base is provided with a base buckle which cooperates with the output shaft.
4. The deceleration belt tensioner according to claim 1, characterized in that: An idler guide post is arranged on the outer side of the speed reduction gland, and the idler guide post is connected to the idler group.
5. The deceleration belt tensioner according to claim 1, characterized in that: A reciprocating mechanism is arranged at the end of the base body.