Reusable structure of safety air bag

Abstract

The invention relates to the technical field of safety airbags, in particular to a recyclable structure of a safety airbag. A recyclable structure of an air bag restraint system comprises an air bag recycling bin, an air bag cover plate, an air bag cover plate and an air bag cover plate, the one-way rotating structure is arranged in the cavity of the air bag recycling bin, one rotating direction of the rotating end of the one-way rotating structure can rotate by more than 360 degrees, and the other rotating direction of the rotating end of the one-way rotating structure is locked. The air bag recycling device has the beneficial effects that the one-way rotating structure is arranged in the cavity of the air bag recycling bin, the winding structure, the holding spring and the driving end of the driving structure are coaxially arranged in a linkage mode, and the radial tightening and loosening characteristics of the holding spring and the one-way locking function of the one-way rotating structure are matched; and switching of two states of active rolling driving during air bag recovery and complete free release during inflation ejection is realized.

Description

Technical Field

[0001] This invention relates to the field of airbag technology, specifically to a reusable airbag structure. Background Technology

[0002] Traditional airbag systems generally use chemical gas generators (such as guanidine nitrate and ammonium nitrate) as the core of gas generation. The gas is released instantaneously through an explosion triggered by a collision, causing the airbag to deploy to protect the occupants.

[0003] Chinese invention patent application CN120171453A proposes that high-pressure gas, pressurized by a booster pump, enters the gas cylinder and opens the airbag. A negative pressure pump then removes the gas from the airbag, and a recovery motor drives the airbag to fold and retract it to its original position. This invention patent achieves the folding and retrieval of the airbag. However, the folding and retrieval of the airbag in this invention patent relies on the recovery motor's direct drive shaft or rotating components to forcibly fold / roll up the airbag fabric. Therefore, when the airbag is deployed a second time, it will be mechanically obstructed by the recovery motor's drive shaft or rotor, thus delaying the airbag's deployment rate and full deployment time. This weakens the airbag's timely protective effectiveness in extreme emergency situations and poses a serious safety hazard. Summary of the Invention

[0004] This invention addresses the technical problems existing in the prior art by providing a reusable airbag structure. The existing airbag folding and retraction method relies on a folding motor to directly drive a shaft or rotating component to forcibly fold / roll the airbag fabric. Therefore, when the airbag is deployed a second time, it is mechanically obstructed by the folding motor drive shaft or rotor, thus delaying the airbag's deployment rate and full deployment time. This weakens the airbag's timely protective effectiveness in extreme emergency situations, posing a serious safety hazard.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A reusable airbag structure, comprising: An airbag recovery chamber, wherein the airbag recovery chamber has a cavity formed inside; A unidirectional rotating structure is installed inside the airbag recovery chamber. One of the rotating ends of the unidirectional rotating structure can rotate more than 360 degrees in one direction, while the other rotation direction is locked. A winding structure for wrapping an airbag, the winding structure rotating within a cavity, one end of the winding structure extending into the interior of the rotating end of a unidirectional rotating structure. A drive structure is disposed within the cavity of the airbag recovery chamber, and the drive end of the drive structure is coaxial with the rotating end of the unidirectional rotating structure. A retaining spring is disposed between the winding structure and the rotating end of the unidirectional rotating structure. One end of the retaining spring is fixed to the driving end of the driving structure, and the other end is fixed to the rotating end of the unidirectional rotating structure. The rotational contraction direction of the retaining spring is the same as the rotational direction of the rotating end of the unidirectional rotating structure.

[0006] The beneficial effects of this invention are: 1) By setting a one-way rotating structure in the airbag recovery chamber and coaxially linking the winding structure, the retaining spring and the drive end of the drive structure, and combining the radial tightening and loosening characteristics of the retaining spring with the one-way locking function of the one-way rotating structure, the switching between the two states of active winding drive during airbag recovery and complete free release during inflation and deployment is realized.

[0007] 2) During the recovery phase, the drive end of the drive structure drives the retaining spring to rotate along its rotational contraction direction, reducing the radial dimension of the retaining spring and tightening it onto the winding structure. This creates a linkage between the retaining spring and the winding structure. As the drive end continues to drive the retaining spring to rotate, it tightens further onto the winding structure and simultaneously drives the winding structure to rotate. The rotating winding structure can then wrap around the airbag, achieving airbag retrieval. After the airbag is wrapped and retrieved, before the inflation and ejection phase, the drive structure drives the retaining spring to rotate in the opposite direction. Due to the locking effect of the unidirectional rotating structure's rotating end, the retaining spring loosens its tightness on the winding structure, preventing a linkage between the retaining spring and the winding structure. This allows the winding structure and the airbag wrapped around it to be in a free state without any driving component resistance, thus completely eliminating the mechanical interference and resistance of traditional recovery mechanisms for the secondary ejection of the airbag. This ensures that the airbag can fully deploy at the designed optimal speed and trajectory at the moment of impact, effectively and promptly providing protection.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, the airbag recovery chamber includes a shell, a cover, and an airbag outlet, wherein the airbag outlet is located inside the cover, and the cover covers one side of the shell.

[0010] Furthermore, the cavity is divided into an airbag recovery slot and an installation slot, wherein the airbag recovery slot is located on one side of the housing and the installation slot is located on the other side of the housing.

[0011] Furthermore, the drive structure includes a rotary drive component, a first pulley, a second pulley, and a transmission belt. The rotary drive component is disposed on the side wall of the mounting groove of the housing. The first pulley is coaxially fixed on the drive end of the rotary drive component. The second pulley is coaxial with the winding structure and rotatably connected to the side wall of the mounting groove of the housing via a rotating shaft. The transmission belt is assembled between the first pulley and the second pulley.

[0012] The beneficial effect of adopting the above-mentioned further solution is that the first pulley is driven to rotate by the drive end of the rotary drive component. Since the transmission belt is assembled between the first pulley and the second pulley, the second pulley can be driven to rotate through the transmission belt.

[0013] Furthermore, the winding structure includes a spool, a linkage shaft, and a recovery rope. Both ends of the spool are rotatably connected to the two side walls of the airbag recovery slot via a rotating shaft. One end of the linkage shaft is coaxially fixed to one end of the spool, and the other end is inserted into the shaft of the retaining spring. The linkage shaft and the retaining spring are tightly fitted together. One end of the recovery rope is fixed to the spool, and the other end of the recovery rope is fixedly connected to the airbag.

[0014] The beneficial effect of adopting the above-mentioned further solution is that when the rotary drive drives the second pulley to rotate in the forward direction, that is, to rotate along the rotation and contraction direction of the retaining spring, since the linkage shaft and the retaining spring achieve axial insertion and tight fit, the retaining spring has a certain load when rotating in the forward direction. At this time, the radial dimension of the inner edge of the retaining spring becomes smaller, thus tightening it outside the linkage shaft, causing the retaining spring and the linkage shaft to have a linkage relationship. As the second pulley continues to drive the retaining spring to rotate, the retaining spring also tightens more and more on the winding structure. Due to the friction between the retaining spring and the linkage shaft, it also begins to synchronously drive the linkage shaft and the winding shaft to rotate. The rotating winding shaft winds the recovery rope, and since one end of the recovery rope is pulled on the airbag, it pulls the airbag and winds it into the airbag recovery groove to complete the airbag recovery process.

[0015] Furthermore, the unidirectional rotation structure includes a ratchet, a pawl, and a torsion spring. The ratchet is coaxial with the spool and sleeved on the outside of the retaining spring. One side of the pawl is hinged to the mounting groove sidewall of the housing, and the other side abuts against the ratchet. The torsion spring is disposed between the pawl and the housing.

[0016] Furthermore, one end of the retaining spring is fixed to the ratchet, and the other end of the retaining spring is fixed to the first pulley.

[0017] The beneficial effect of adopting the above-mentioned further solution is that, after the airbag is wound and retrieved, before the airbag is inflated and deployed, the second pulley is driven to rotate in the opposite direction by the rotary drive component. Combined with the reverse rotation of the ratchet being locked in one direction by the pawl, the ratchet and one end of the clamping spring fixed to it are completely fixed. At this time, the second pulley drives the other end of the clamping spring to rotate in the opposite direction, causing the clamping spring to produce a radial expansion and release action, thereby quickly and completely releasing the clamping force and friction on the linkage shaft. This allows the entire reel, linkage shaft, retrieval rope and the wound airbag to enter a completely undamped and uninterrupted free rotation state, eliminating the residual torque, frictional resistance or mechanical engagement that commonly exist in traditional retrieval and winding mechanisms, which hinder the airbag deployment process.

[0018] Furthermore, the airbag outlet on one side of the shell is provided with a closed structure.

[0019] Furthermore, the enclosed structure includes a frame, a decorative cover, a pull cord, and a fastening assembly. The frame is disposed on one side of the shell, and one side of the decorative cover is rotatably connected to the inside of the frame via a pivot. One end of the pull cord is fixed to the side of the airbag, and the other end of the pull cord is fixed to the decorative cover. The length of the pull cord is less than the length of the retraction cord. The fastening assembly is disposed between the decorative cover and the frame.

[0020] Furthermore, the fastening assembly includes a protrusion, a locking block, a groove, and a rounded corner. The protrusion is fixed inside the frame, the locking block is fixed to one side of the decorative cover plate, the groove is formed inside the locking block, and the rounded corner is formed on the locking block and located on the side that contacts the protrusion.

[0021] The beneficial effect of adopting the above-mentioned further solution is that by closing the airbag outlet with the decorative cover plate, dust, water, and other foreign objects can be effectively prevented from entering the shell cavity, avoiding problems such as component corrosion, mechanism jamming, retrieval rope / airbag contamination, and spring performance degradation caused by long-term exposure. As the reel winds the recovery rope to pull the airbag into the airbag recovery slot, and at the moment the airbag is finally inserted, one end of the rope is pulled on the airbag, causing the other end of the rope to be taut with the decorative cover. As the airbag is finally completely pulled into the airbag recovery slot, the other end of the rope pulls the decorative cover to rotate and close it on the frame, thus completing the closure of the airbag ejection outlet. The decorative cover is then secured to the frame by the groove on the locking block engaging with the protrusion. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the decorative cover plate of the present invention in the opened state; Figure 3 This is a schematic diagram of the overall structure of the invention after it has exploded in three dimensions; Figure 4 This is a cross-sectional view of the overall structure of the present invention; Figure 5 This is a three-dimensional structural diagram of the airbag deployment of the present invention.

[0023] The attached diagram lists the components represented by each number as follows: 10. Airbag recovery chamber; 101. Shell; 102. Shell cover; 103. Airbag ejection outlet; 104. Cavity; 104a. Airbag recovery slot; 104b. Mounting slot; 20. One-way rotation structure; 201. Ratchet; 202. Pawl; 30. Winding structure; 301. Reel; 302. Linkage shaft; 303. Recovery rope; 40. Drive structure; 401. Rotary drive component; 402. First pulley; 403. Second pulley; 404. Transmission belt; 50. Clamping spring; 60. Enclosed structure; 601. Frame; 602. Decorative cover plate; 603. Pull rope; 604. Fastening assembly; 604a. Protrusion; 604b. Locking block; 604c. Groove; 604d. Rounded corner. Detailed Implementation

[0024] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0025] Traditional airbag systems generally use chemical gas generators (such as guanidine nitrate and ammonium nitrate) as the core of gas generation. The gas is released instantaneously through an explosion triggered by a collision, causing the airbag to deploy to protect the occupants.

[0026] Chinese invention patent application CN120171453A proposes a method where high-pressure gas from a gas cylinder, pressurized by a booster pump, enters and opens the airbag. A negative pressure pump then removes the gas from the airbag, and a recovery motor drives the airbag to fold and retract it to its original position. This method achieves the folding and retraction of the airbag. However, the folding and retraction of the airbag in this invention relies on the recovery motor's direct drive shaft or rotating components to forcibly fold / roll the airbag fabric. As a result, when the airbag is deployed a second time, it will be mechanically obstructed by the recovery motor's drive shaft or rotor, thus delaying the airbag's deployment rate and full deployment time. This weakens the airbag's timely protective effectiveness in extreme emergency situations and poses a serious safety hazard. To address this issue, the inventor has proposed a reusable airbag structure.

[0027] The present invention provides the following preferred embodiments. like Figures 1-5 As shown, a reusable airbag structure includes: The airbag recovery chamber 10 has a cavity 104 formed inside it. A one-way rotating structure 20 is disposed in the cavity 104 of the airbag recovery chamber 10. One of the rotating ends of the one-way rotating structure 20 can rotate more than 360 degrees in one direction, and the other rotating direction is locked. The winding structure 30 is used to wrap the airbag. The winding structure 30 rotates within the cavity 104, and one end of the winding structure 30 extends into the interior of the rotating end of the unidirectional rotating structure 20. The drive structure 40 is disposed inside the cavity 104 of the airbag recovery chamber 10, and the drive end of the drive structure 40 is coaxial with the rotation end of the unidirectional rotation structure 20. A retaining spring 50 is disposed between the winding structure 30 and the rotating end of the unidirectional rotating structure 20. One end of the retaining spring 50 is fixed to the driving end of the driving structure 40, and the other end is fixed to the rotating end of the unidirectional rotating structure. The rotational contraction direction of the retaining spring 50 is in the same direction as the rotational direction of the rotating end of the unidirectional rotating structure 20. By setting a one-way rotating structure 20 in the cavity 104 of the airbag recovery chamber 10, and coaxially linking the winding structure 30, the retaining spring 50 and the driving end of the driving structure 40, and by combining the radial tightening and loosening characteristics of the retaining spring 50 with the one-way locking function of the one-way rotating structure 20, the switching between the two states of active winding drive during airbag recovery and complete free release during inflation is realized. During the recovery phase, the drive end of the drive structure 40 drives the retaining spring 50 to rotate along its rotational contraction direction, causing the radial dimension of the retaining spring 50 to decrease, thereby tightening it onto the winding structure 30. This creates a linkage between the retaining spring 50 and the winding knot. As the drive end of the drive structure 40 continues to drive the retaining spring 50 to rotate, the retaining spring 50 becomes increasingly tight onto the winding structure 30, and simultaneously drives the winding structure 30 to rotate. The rotating winding structure 30 can then wrap around the airbag, achieving the recovery of the airbag. After the airbag is wound and retrieved, before the airbag is inflated and deployed, the drive structure 40 drives the retaining spring 50 to rotate in the opposite direction. Because the rotating end of the one-way rotating structure 20 locks the retaining spring 50 in the opposite direction, the retaining spring 50 releases its tension on the winding structure 30, so that the retaining spring 50 and the winding structure 30 do not have a linkage relationship. This puts the winding structure 30 and the airbag wound on it in a free state without any driving component resistance, thus completely eliminating the mechanical interference and resistance of the traditional retrieval mechanism to the secondary deployment of the airbag. This ensures that the airbag can fully deploy at the designed optimal speed and trajectory at the moment of impact, effectively and timely achieving the protection function.

[0028] In this embodiment, as Figures 1-5 As shown, the airbag recovery chamber 10 includes a housing 101, a cover 102, and an airbag outlet 103. The airbag outlet 103 is located inside the cover 102, which covers one side of the housing 101. The cavity 104 is divided into an airbag recovery slot 104a and a mounting slot 104b. The airbag recovery slot 104a is located on one side of the housing 101, and the mounting slot 104b is located on the other side of the housing 101.

[0029] In this embodiment, as Figures 1-5 As shown, the drive structure 40 includes a rotary drive 401 (the rotary drive 401 includes, but is not limited to, the use of a torque reduction motor to provide forward / reverse power), a first pulley 402, a second pulley 403, and a transmission belt 404. The rotary drive 401 is disposed on the side wall of the mounting groove 104b of the housing 101. The first pulley 402 is coaxially fixed on the drive end of the rotary drive 401. The second pulley 403 is coaxial with the winding structure 30 and rotatably connected to the side wall of the mounting groove 104b of the housing 101 through a rotating shaft. The transmission belt 404 is assembled between the first pulley 402 and the second pulley 403. The first pulley 402 is driven to rotate by the drive end of the rotating drive component 401. Since the transmission belt 404 is assembled between the first pulley 402 and the second pulley 403, the second pulley 403 can be driven to rotate by the transmission belt 404.

[0030] In this embodiment, as Figures 1-5 As shown, the winding structure 30 includes a winding shaft 301, a linkage shaft 302, and a recovery rope 303. Both ends of the winding shaft 301 are rotatably connected to the two side walls of the airbag recovery groove 104a via a rotating shaft. One end of the linkage shaft 302 is coaxially fixed to one end of the winding shaft 301, and the other end is inserted into the shaft of the retaining spring 50. The linkage shaft 302 and the retaining spring 50 are tightly fitted together. One end of the recovery rope 303 is fixed to the winding shaft 301, and the other end of the recovery rope 303 is fixedly connected to the airbag. When the rotary drive 401 drives the second pulley 403 to rotate in the forward direction, that is, along the rotational contraction direction of the retaining spring 50, since the linkage shaft 302 and the retaining spring 50 are axially inserted and tightly fitted, the retaining spring 50 is under a certain load when rotating in the forward direction. At this moment, the radial dimension of the retaining spring 50 decreases, thus tightening it outside the linkage shaft 302, causing the retaining spring 50 and the linkage shaft 302 to be linked. As the second pulley 403 continues to drive the retaining spring 50 to rotate, the retaining spring 50 becomes increasingly tight on the winding structure 30. Due to the friction between the retaining spring 50 and the linkage shaft 302, it also begins to synchronously drive the linkage shaft 302 and the winding shaft 301 to rotate. The rotating winding shaft 301 winds the recovery rope 303, and since one end of the recovery rope 303 is pulled on the airbag, it pulls the airbag and winds it into the airbag recovery groove 104a, thus completing the airbag recovery process.

[0031] In this embodiment, as Figures 1-5As shown, the unidirectional rotating structure 20 includes a ratchet 201, a pawl 202, and a torsion spring (not shown in the figure). The ratchet 201 is coaxial with the spool 301 and sleeved on the outside of the retaining spring 50. One side of the pawl 202 is hinged to the side wall of the mounting groove 104b of the housing 101, and the other side abuts against the ratchet 201. The torsion spring is disposed between the pawl 202 and the housing 101. One end of the retaining spring 50 is fixed to the ratchet 201, and the other end of the retaining spring 50 is fixed to the first pulley 402. After the airbag is wound and retrieved, before the inflation and deployment stage, the second pulley 403 is driven to rotate in the opposite direction by the rotary drive 401. Combined with the reverse rotation of the ratchet 201 being locked in one direction by the pawl 202, the ratchet 201 and one end of the clamping spring 50 fixed to it are completely fixed in place. At this time, the second pulley 403 drives the other end of the clamping spring 50 to rotate in the opposite direction, causing the clamping spring 50 to expand radially and release. This quickly and completely releases the clamping force and friction on the linkage shaft 302, allowing the entire reel 301, linkage shaft 302, retrieval rope 303, and the wound airbag to enter a state of free rotation without damping or interference from drive components. This eliminates the residual torque, frictional resistance, or mechanical engagement that commonly exist in traditional retrieval and winding mechanisms, which hinder the airbag deployment process.

[0032] In this embodiment, as Figures 1-5 As shown, the airbag outlet 103 on one side of the shell 102 is provided with a sealing structure 60. The sealing structure 60 includes a frame 601, a decorative cover plate 602, a pull cord 603, and a fastening assembly 604. The frame 601 is located on one side of the shell 102. One side of the decorative cover plate 602 is rotatably connected to the inside of the frame 601 via a pivot. One end of the pull cord 603 is fixed to the side of the airbag, and the other end of the pull cord 603 is fixed to the decorative cover plate 602. The length of the pull cord 603 is less than the length of the retraction cord 303. The fastening assembly 604 is located on the decorative cover plate 602. Between the cover plate 602 and the frame 601, the fastening assembly 604 includes a protrusion 604a, a locking block 604b, a groove 604c, and a rounded corner 604d. The protrusion 604a is fixed to the inner side of the frame 601, the locking block 604b is fixed to one side of the decorative cover plate 602, the groove 604c is formed inside the locking block 604b, and the rounded corner 604d is formed on the locking block 604b and is located on the side that contacts the protrusion 604a. (The frame 601 and the decorative cover plate 602 include, but are not limited to, the use of high-toughness engineering plastics such as PC / ABS, PPO, etc.) By closing the airbag outlet 103 through the decorative cover plate 602, dust, water, and other foreign objects can be effectively prevented from entering the cavity 104 of the shell 101, avoiding problems such as corrosion of parts, jamming of mechanism, contamination of recovery rope 303 / airbag, and performance degradation of spring 50 caused by long-term exposure. As the reel 301 winds the recovery rope 303 to pull the airbag into the airbag recovery slot 104a, and at the moment the airbag is finally inserted, because one end of the rope is pulled on the airbag, the other end of the rope 603 is in a taut state with the decorative cover plate 602. As the airbag is finally completely wound into the airbag recovery slot 104a, the other end of the rope 603 pulls the decorative cover plate 602 to rotate and close on the frame 601, thereby completing the closure of the airbag ejection outlet 103. The decorative cover plate 602 is fastened to the frame 601 by the groove 604c on the locking block 604b locking onto the protrusion 604a.

[0033] The specific working process of this invention is as follows: (1) Airbag recovery stage First, when the rotary drive 401 drives the second pulley 403 to rotate in the forward direction, that is, along the rotational contraction direction of the retaining spring 50, since the linkage shaft 302 and the retaining spring 50 are axially inserted and tightly fitted, the retaining spring 50 is under a certain load when rotating in the forward direction. At this moment, the radial dimension of the retaining spring 50 decreases, thus tightening it outside the linkage shaft 302, causing the retaining spring 50 and the linkage shaft 302 to be linked. As the second pulley 403 continues to drive the retaining spring 50 to rotate, the retaining spring 50 becomes increasingly tight on the winding structure 30. Due to the friction between the retaining spring 50 and the linkage shaft 302, it also begins to synchronously drive the linkage shaft 302 and the winding shaft 301 to rotate. The rotating winding shaft 301 winds the recovery rope 303, and since one end of the recovery rope 303 is pulled on the airbag, it pulls the airbag and winds it into the airbag recovery groove 104a to complete the airbag recovery process.

[0034] (2) Decorative cover plate 602 seals the airbag outlet 103 stage As the reel 301 winds the recovery rope 303 to pull the airbag into the airbag recovery slot 104a, and at the moment the airbag is finally inserted, because one end of the rope is pulled on the airbag, the other end of the rope 603 is in a taut state with the decorative cover plate 602. As the airbag is finally completely wound into the airbag recovery slot 104a, the other end of the rope 603 pulls the decorative cover plate 602 to rotate and close on the frame 601, thereby completing the closure of the airbag ejection outlet 103. The decorative cover plate 602 is fastened to the frame 601 by the groove 604c on the locking block 604b locking onto the protrusion 604a.

[0035] (3) Preparations before airbag deployment Before the airbag inflation and deployment stage (i.e., after the decorative cover 602 closes the airbag outlet 103), a metal ring is fitted at one end of the pull cord 603 connected to the airbag, and a metal induction coil is embedded in the shell 102. When the airbag is wound into the airbag recovery groove 104a, the airbag begins to pull the pull cord 603. At this time, the decorative cover 602 is fastened to the airbag outlet 103. Since the pull cord 603 also enters the airbag recovery groove 104a, and because the metal ring is fitted outside the pull cord, the presence of the metal ring is sensed by the metal induction coil, which can detect that the airbag has been recovered. The metal induction coil then sends an electrical signal to the rotary drive 401, and the rotary drive 401 receives the signal and drives the second pulley 403 to rotate in the opposite direction. When the rotary drive 401 drives the second pulley 403 to rotate in the opposite direction, the reverse rotation of the ratchet 201 is locked in one direction by the pawl 202. The ratchet 201 and one end of the spring 50 fixed to it are completely fixed. At this time, the second pulley 403 drives the other end of the spring 50 to rotate in the opposite direction, causing the spring 50 to expand radially and loosen. This quickly and completely releases the clamping force and friction on the linkage shaft 302, allowing the entire reel 301, linkage shaft 302, recovery rope 303 and the wound airbag to enter a state of free rotation without damping or interference from drive components.

[0036] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A reusable airbag structure, characterized in that, include: An airbag recovery chamber, wherein the airbag recovery chamber has a cavity formed inside; A unidirectional rotating structure is installed inside the airbag recovery chamber. One of the rotating ends of the unidirectional rotating structure can rotate more than 360 degrees in one direction, while the other rotation direction is locked. A winding structure for wrapping an airbag, the winding structure rotating within a cavity, one end of the winding structure extending into the interior of the rotating end of a unidirectional rotating structure. A drive structure is disposed within the cavity of the airbag recovery chamber, and the drive end of the drive structure is coaxial with the rotating end of the unidirectional rotating structure. A retaining spring is disposed between the winding structure and the rotating end of the unidirectional rotating structure. One end of the retaining spring is fixed to the driving end of the driving structure, and the other end is fixed to the rotating end of the unidirectional rotating structure. The rotational contraction direction of the retaining spring is the same as the rotational direction of the rotating end of the unidirectional rotating structure.

2. The reusable airbag structure according to claim 1, characterized in that, The airbag recovery chamber includes a shell, a cover, and an airbag outlet. The airbag outlet is located inside the cover, and the cover covers one side of the shell.

3. The reusable airbag structure according to claim 2, characterized in that, The cavity is divided into an airbag recovery slot and an installation slot. The airbag recovery slot is located on one side of the housing, and the installation slot is located on the other side of the housing.

4. The reusable airbag structure according to claim 3, characterized in that, The drive structure includes a rotary drive component, a first pulley, a second pulley, and a transmission belt. The rotary drive component is disposed on the side wall of the mounting groove of the housing. The first pulley is coaxially fixed to the drive end of the rotary drive component. The second pulley is coaxial with the winding structure and rotatably connected to the side wall of the mounting groove of the housing via a rotating shaft. The transmission belt is assembled between the first pulley and the second pulley.

5. The reusable airbag structure according to claim 4, characterized in that, The winding structure includes a spool, a linkage shaft, and a recovery rope. Both ends of the spool are rotatably connected to the two side walls of the airbag recovery slot via a rotating shaft. One end of the linkage shaft is coaxially fixed to one end of the spool, and the other end is inserted into the shaft of the retaining spring. The linkage shaft and the retaining spring are tightly fitted together. One end of the recovery rope is fixed to the spool, and the other end of the recovery rope is fixedly connected to the airbag.

6. The reusable airbag structure according to claim 5, characterized in that, The unidirectional rotating structure includes a ratchet, a pawl, and a torsion spring. The ratchet is coaxial with the spool and sleeved on the outside of the spring. One side of the pawl is hinged to the side wall of the mounting groove of the housing, and the other side abuts against the ratchet. The torsion spring is disposed between the pawl and the housing.

7. The reusable airbag structure according to claim 6, characterized in that, One end of the retaining spring is fixed to the ratchet, and the other end of the retaining spring is fixed to the first pulley.

8. The reusable airbag structure according to claim 4, characterized in that, The airbag outlet on one side of the shell is equipped with a closed structure.

9. A reusable airbag structure according to claim 8, characterized in that, The enclosed structure includes a frame, a decorative cover, a pull cord, and a fastening assembly. The frame is located on one side of the shell, and one side of the decorative cover is rotatably connected to the inside of the frame via a pivot. One end of the pull cord is fixed to the side of the airbag, and the other end of the pull cord is fixed to the decorative cover. The length of the pull cord is less than the length of the retraction cord. The fastening assembly is located between the decorative cover and the frame.

10. A reusable airbag structure according to claim 9, characterized in that, The fastening assembly includes a protrusion, a locking block, a groove, and a rounded corner. The protrusion is fixed inside the frame, the locking block is fixed to one side of the decorative cover plate, the groove is formed inside the locking block, and the rounded corner is formed on the locking block and located on the side that contacts the protrusion.

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