A folding mechanism for an airbag

Abstract

The utility model relates to air bag production technical field, concretely is a kind of air bag's folding mechanism, it solves the technical problem that air bag is difficult to take down due to the large friction with folding plate after folding in existing air bag folding technology, and it is easy to be scratched, including driving motor and two oppositely arranged folding plates, driving motor drives two folding plates rotation for folding air bag, when two the folding plate between a certain interval is formed between two the folding plate between the clamping opening for clamping air bag, characterized by: each the folding plate is all installed with several rollers, the roller protrudes from the outer wall of the folding plate, and the rolling direction of the roller is same with the dismounting direction of the air bag;When dismounting the air bag, the air bag is taken down along the length direction of the folding plate, and the roller and air bag are in rolling contact.

Description

Technical Field

[0001] This utility model relates to the field of airbag manufacturing technology, specifically to an airbag folding mechanism. Background Technology

[0002] Airbags, as an important component of automotive safety systems, have long been an indispensable key feature of modern vehicles. From family cars for daily commuting to commercial vehicles for long-distance transportation, almost all models are equipped with different numbers and types of airbags to provide timely cushioning and protection for occupants in the event of a collision or other emergencies.

[0003] After production, airbags need to be folded for subsequent installation. A search revealed an automotive seat airbag folding mechanism disclosed in publication number CN222629471U. This mechanism uses folding plates to assist in folding the airbag. A drive motor rotates two opposing folding plates, thereby achieving the folding operation.

[0004] When this folding method is used, the folded airbag will be tightly wrapped around the outside of the two folding plates. During the subsequent process of removing the airbag from the folding plates, due to the large friction between the airbag and the folding plates (tightly wrapped), it is difficult to remove the airbag along the length of the folding plates, which reduces production efficiency. At the same time, due to the friction between the airbag and the folding plates, the inner wall of the airbag is prone to rubbing against the folding plates, which will cause scratches on the inside of the airbag, affecting the product quality of the airbag and the safety of subsequent use. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a folding mechanism for airbags, solving the technical problem that in existing airbag folding technologies, the folded airbag is difficult to remove due to high friction with the folding plate and is easily scratched.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a folding mechanism for an airbag, comprising a drive motor and two opposing folding plates. The drive motor drives the two folding plates to rotate for folding the airbag. When the two folding plates are spaced apart by a certain distance, a clamping opening for holding the airbag is formed between the two folding plates. The characteristic feature is that each folding plate is rotatably mounted with a plurality of rollers, the rollers protruding from the outer wall of the folding plate, and the rolling direction of the rollers is the same as the disassembly direction of the airbag. When disassembling the airbag, the airbag is removed along the length direction of the folding plate, and the rollers make rolling contact with the airbag.

[0007] Furthermore, it also includes a connecting frame for mounting the folding plate, wherein a connecting shaft is provided in the middle of the connecting frame, and the connecting shaft is connected to the rotating end of the drive motor for transmission.

[0008] Furthermore, the folding plate is fixedly installed on the connecting frame.

[0009] Furthermore, the connecting frame is equipped with a telescopic device arranged opposite to each other; the folding plate is installed on the telescopic end of the telescopic device; the telescopic device can drive the two folding plates to move relative to each other to adjust the width of the clamp between the two folding plates.

[0010] Furthermore, the drive motor is fixedly mounted on the support frame.

[0011] Furthermore, a rotary joint is installed on the support frame, the rotary joint is coaxially mounted with the connecting shaft, and the rotary joint surrounds the outside of the connecting shaft; the rotary joint is used to connect the telescopic device to form a passage for fluid or electrical conduction.

[0012] Furthermore, the folding plate has an installation groove, and an installation frame is installed in the installation groove; the roller is installed on the installation frame, and the installation frame can move within the installation groove.

[0013] Furthermore, a spring is installed on the folding plate to provide elasticity to the mounting frame; under normal conditions, the elasticity of the spring can drive the mounting frame to move, causing the roller to protrude outward from the folding plate.

[0014] Furthermore, the inner wall of the mounting groove of the folding plate is provided with a slot for installing the spring, and a guide rod is provided in the slot; a connecting block is provided on the outer wall of the mounting frame, and a through hole matching the guide rod is provided on the connecting block, the guide rod is installed in the through hole, and the connecting block is slidably connected to the guide rod; one end of the spring abuts against the inner wall of the slot, and the other end abuts against the outer wall of the connecting block.

[0015] Compared with the prior art, the present invention provides a folding mechanism for an airbag, which has the following advantages: This airbag folding mechanism uses several rollers mounted on a folding plate, with the rollers protruding from the outer wall of the folding plate. The rolling direction of the rollers is consistent with the airbag disassembly direction. After the airbag is folded, the inside of the airbag contacts the rollers on the folding plate and is wrapped around the outside. When the operator removes the airbag along the length of the folding plate, the rollers transform the traditional sliding friction between the airbag and the folding plate into rolling friction between the rollers and the airbag, significantly reducing frictional resistance. This not only allows operators to complete the airbag disassembly operation more easily and effortlessly, but also significantly reduces the labor intensity in the production process and improves overall production efficiency.

[0016] At the same time, this rolling contact method can also provide good protection for the airbag, avoiding scratches and damage caused by the friction between the inner wall of the airbag and the folding plate in traditional sliding friction, reducing the scrap rate of airbag damage production and improving the quality of product use. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the folding plate of this utility model; Figure 3 This is a cross-sectional view of the folding plate of this utility model; Figure 4 This utility model Figure 3 A partially enlarged structural diagram of point A shown in the image; Figure 5 This is a three-dimensional structural diagram of the folding plate of this utility model, wherein the mounting frame, spring, and guide rod are separated from their original mounting positions; Figure 6 This utility model Figure 5 A partially enlarged structural diagram of point B shown in the image; Figure 7 This is a three-dimensional structural diagram of the folding plate of this utility model, wherein the mounting frame is separated from the original mounting position; Figure 8 This utility model Figure 7 The diagram shows a partially enlarged structural schematic at point C.

[0018] In the diagram: 1. Folding plate; 2. Roller; 3. Mounting slot; 4. Mounting frame; 5. Clamp; 6. Drive motor; 7. Connecting shaft; 8. Connecting frame; 9. Support frame; 10. Telescopic device; 11. Rotary joint; 12. Spring; 13. Groove; 14. Guide rod; 15. Connecting block; 16. Through hole. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1 The present invention discloses a folding mechanism for an airbag, which mainly consists of a drive motor 6 and two opposing folding plates 1. The drive motor 6 serves as a power source and can drive the two folding plates 1 to rotate synchronously in order to fold the airbag.

[0021] When the two folding plates 1 are spaced a certain distance apart, a clamping opening 5 is formed between them to hold the airbag. During the airbag folding operation, one end of the airbag to be folded is first placed into the clamping opening 5. The clamping opening 5 initially fixes the end of the airbag, ensuring that it will not shift during the folding process. After the end of the airbag is fixed, the drive motor 6 is started. The drive motor 6 drives the two folding plates 1 to rotate synchronously in the same direction. As the folding plates 1 rotate, the airbag is gradually wrapped around and enclosed by the two folding plates 1. Under the continuous rotation of the folding plates 1, the airbag is folded into a folded state that meets the assembly requirements.

[0022] Several rollers 2 are rolled on the outer wall of each folding plate 1. All rollers 2 protrude from the outer wall of the folding plate 1, and the rolling direction of the rollers 2 is consistent with the subsequent disassembly direction of the airbag.

[0023] After the airbag is folded by the folding plates 1, it will be wrapped around the outside of the two folding plates 1. At this time, the inner wall of the airbag is in direct contact with the protruding rollers 2 on the folding plates 1. When it is necessary to remove the airbag, the operator removes the airbag outward along the length of the folding plates 1. During this process, the airbag and the rollers 2 form rolling contact, and the rollers 2 roll synchronously with the movement of the airbag, transforming the sliding friction between the airbag and the folding plates 1 in traditional technology into rolling friction. This greatly reduces the resistance when removing the airbag, allowing the operator to complete the removal operation more effortlessly, and also avoids the scratches caused by the direct sliding and rubbing of the airbag against the folding plates 1, effectively protecting the airbag.

[0024] like Figure 1 As shown, in the first installation method of roller 2, roller 2 is directly rolled on folding plate 1 using bearings and other devices, and roller 2 can rotate flexibly.

[0025] like Figure 2-8 As shown, in the second installation method of the roller 2, an installation groove 3 is provided on the folding plate 1, and a movable installation frame 4 is installed inside the installation groove 3. The roller 2 is rolled on the installation frame 4 by means of bearings and other devices, and the installation frame 4 can move along the installation groove 3, thereby driving the roller 2 to move synchronously.

[0026] To enable the elastic extension and retraction of the roller 2, a spring 12 is also installed on the folding plate 1, which provides elastic force to the mounting frame 4. Under normal conditions, the spring 12 is in a naturally extended state, and the elastic force it generates will drive the mounting frame 4 to move outward from the folding plate 1, thereby causing the roller 2 to protrude outward from the folding plate 1, ensuring that the roller 2 can make effective contact with the airbag wrapped around the folding plate 1.

[0027] The specific connection method between the spring 12 and the mounting frame 4 is as follows: a slot 13 for accommodating the spring 12 is provided on the inner wall of the mounting groove 3 of the folding plate 1, and a guide rod 14 is fixedly installed inside the slot 13; correspondingly, a connecting block 15 is integrally formed on the outer wall of the mounting frame 4, and a through hole 16 matching the diameter of the guide rod 14 is provided on the connecting block 15. The diameter of the through hole 16 is slightly larger than the diameter of the guide rod 14, and the guide rod 14 is installed through the through hole 16, so that the connecting block 15 can slide along the axial direction of the guide rod 14. The spring 12 is sleeved on the outside of the guide rod 14, with one end abutting against the inner wall of the slot 13 and the other end abutting against the outer wall of the connecting block 15. When the roller 2 is subjected to external force, when the mounting frame 4 moves into the mounting groove 3, the connecting block 15 will compress the spring 12 and slide along the guide rod 14. After the external force disappears, the restoring force of the spring 12 will push the connecting block 15 and the mounting frame 4 to return to their original positions, ensuring that the roller 2 always remains in a protruding state.

[0028] Through the elastic action of spring 12, roller 2 can adaptively adjust its protrusion according to the wrapping force of the airbag, which not only ensures the rolling friction effect during disassembly, but also provides appropriate cushioning for the airbag during folding.

[0029] The folding mechanism of the airbag also includes a connecting frame 8 for mounting the folding plate 1. The connecting frame 8 serves as the mounting carrier for the folding plate 1, and a connecting shaft 7 is fixedly installed in its middle. The connecting shaft 7 forms a transmission connection with the rotating end of the drive motor 6 to realize the transmission of power from the drive motor 6 to the connecting frame 8, thereby driving the folding plate 1 to rotate.

[0030] There are several ways to connect the connecting shaft 7 to the drive motor 6. The first is a direct connection, in which the connecting shaft 7 and the rotating end of the drive motor 6 are directly and concentrically connected and fixed. After the drive motor 6 starts, its rotating end can directly drive the connecting shaft 7 and the connecting frame 8 to rotate synchronously. The second is an indirect transmission method, in which the connecting shaft 7 and the rotating end of the drive motor 6 are connected through a transmission mechanism. Common transmission mechanisms include reducers, gear drives, belt and pulley drives, etc.

[0031] It also includes a support frame 9 for supporting the drive motor 6. The drive motor 6 is fixedly installed on the support frame 9 at the indicated installation position by bolts or other fasteners. The support frame 9 provides stable support for the folding mechanism of the airbag.

[0032] The first installation method for the folding plate 1 and the connecting frame 8 involves a fixed installation of the folding plate 1 and the connecting frame 8. The specific assembly structure is as follows: Two folding plates 1 are fixedly installed at opposite positions on the connecting frame 8. After installation, the two folding plates 1 are in a facing state, with a fixed-width gap between them. This gap forms the clamping opening 5 for holding the airbag. In this installation method, the spacing of the clamping opening 5 is fixed and cannot be adjusted. It should be noted that the two roller 2 installation methods mentioned above (direct installation on the folding plate 1 and installation via the mounting frame 4 and spring 12) are both applicable to this installation method.

[0033] The second installation method for the folding plate 1 and the connecting frame 8 involves an adjustable spacing of the folding plates 11. This adjustment is achieved through a telescopic device 10, which allows for flexible adjustment of the clamping gap 5. The specific structure is as follows: The telescopic device 10 can be a common type, such as a cylinder or an electric telescopic rod. Both devices can stably output driving force, enabling precise movement of the folding plates 1. Furthermore, the telescopic device 10 can be installed in two ways: one is a single telescopic device 10 installation, where only one telescopic device 10 is installed on the connecting frame 8. The telescopic end of this device 10 is connected to one of the folding plates 1, while the other folding plate 1 is directly fixed to the connecting frame 8. The telescopic movement of the single device 10 moves the connected folding plate 1, thus adjusting the width of the clamping gap 5. The other method is a double telescopic device 10 installation, such as... Figure 1 As shown, two telescopic devices 10 are installed opposite each other on the connecting frame 8. Two folding plates 1 are respectively installed on the telescopic ends of the corresponding telescopic devices 10. When adjusting the spacing, the two telescopic devices 10 start synchronously and move in opposite directions, causing the two folding plates 1 to move closer or further away at the same time, thereby adjusting the width of the clamp 5. It should be noted that the installation method of the folding plate 1 and the connecting frame 8 preferably uses the second installation method of the roller 2 mentioned above, that is, the roller 2 is installed by the cooperation of the mounting frame 4 and the spring 12. In the second installation method of the roller 2, the spring 12 can provide a continuous elastic driving force for the mounting frame 4 and the roller 2, so that the roller 2 can adaptively adjust the protrusion degree according to the actual wrapping force of the airbag. When the clamp 5 spacing is increased and the airbag wrapping is tighter, the roller 2 can retract into the mounting groove 3 under the compression of the airbag to avoid damage to the airbag due to excessive compression; when the clamp 5 spacing is decreased and the wrapping force is smaller, the elastic force of the spring 12 can push the roller 2 to protrude outward from the folding plate 1 to ensure that the roller 2 always maintains effective contact with the airbag.

[0034] To ensure stable power supply to the telescopic device 10 during the rotation of the connecting frame 8, a rotary joint 11 is also installed on the support frame 9. The rotary joint 11 is coaxially installed with the connecting shaft 7 in the middle of the connecting frame 8. The rotary joint 11 surrounds the outside of the connecting shaft 7. The structure of the rotary joint 11 can simultaneously and stably form a passage for fluid or electrical conduction when the connecting shaft 7 rotates with the drive motor 6, so as to continuously supply power to the telescopic device 10.

[0035] The rotary joint 11 mainly consists of two parts: a fixed end and a rotating end. The fixed end is fixedly connected to the support frame 9 and remains stationary. The rotating end is fixedly connected to the connecting shaft 7 and can rotate synchronously with the connecting shaft 7. The fixed end and the rotating end are dynamically sealed through a sealing structure (such as a sealing ring or a sealing gasket) to ensure that the fluid or current in the internal passage will not leak.

[0036] When the telescopic device 10 uses a cylinder, the fixed end of the rotary joint 11 is connected to an external air supply pipeline, while the rotating end is connected to the air inlet and outlet of the cylinder through a pipeline. At this time, a gas passage is formed inside the rotary joint 11. During the rotation of the cylinder driven by the connecting frame 8, the fixed end and the rotating end rotate relative to each other, and the gas can be stably delivered to the cylinder through this passage, driving the cylinder to extend and retract, thereby adjusting the spacing of the folding plates 1.

[0037] When the telescopic device 10 uses an electric telescopic rod, the fixed end of the rotary joint 11 is connected to an external power supply line, while the rotating end is connected to the motor of the electric telescopic rod via a wire. At this time, a conductive electrical connection path is formed inside the rotary joint 11. When the connecting frame 8 rotates, this path can continuously supply power to the electric telescopic rod, ensuring that the electric telescopic rod works normally and accurately drives the folding plate 1 to move.

[0038] In summary, when using this airbag folding mechanism, one end of the airbag is first placed at the clamp 5 between the two folding plates 1 to initially fix one end of the airbag.

[0039] Then the drive motor 6 is started, and the drive motor 6 drives the folding plate 1 to rotate. During the rotation of the folding plate 1, the airbag is gradually wrapped around the folding plate 1 to complete the folding of the airbag. Finally, the folded airbag is wrapped around the outside of the folding plate 1.

[0040] When the airbag needs to be removed, pull the airbag outward along the length of the folding plate 1. At this time, the airbag will contact the roller 2 on the folding plate 1. During the pulling process, the airbag drives the roller 2 to rotate synchronously, which not only makes it easy to remove the airbag, but also effectively prevents the airbag from being scratched during the removal process.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A folding mechanism for an airbag, comprising a drive motor (6) and two opposing folding plates (1), wherein the drive motor (6) drives the two folding plates (1) to rotate for folding the airbag, and when the two folding plates (1) are spaced apart by a certain distance, a clamping opening (5) for holding the airbag is formed between the two folding plates (1), characterized in that: Each of the folding plates (1) is equipped with several rollers (2), which protrude from the outer wall of the folding plate (1) and the rolling direction of the rollers (2) is the same as the disassembly direction of the airbag. When disassembling the airbag, the airbag is removed along the length of the folding plate (1) and the rollers (2) roll into contact with the airbag.

2. The folding mechanism of the airbag according to claim 1, characterized in that: It also includes a connecting frame (8) for mounting the folding plate (1), wherein a connecting shaft (7) is provided in the middle of the connecting frame (8), and the connecting shaft (7) is connected to the rotating end of the drive motor (6) for transmission.

3. The folding mechanism of the airbag according to claim 2, characterized in that: The folding plate (1) is fixedly installed on the connecting frame (8).

4. The folding mechanism of the airbag according to claim 2, characterized in that: The connecting frame (8) is equipped with a telescopic device (10) arranged opposite to each other; the folding plate (1) is installed at the telescopic end of the telescopic device (10); the telescopic device (10) can drive the two folding plates (1) to move relative to each other to adjust the width of the clamp (5) between the two folding plates (1).

5. The folding mechanism of the airbag according to claim 4, characterized in that: The drive motor (6) is fixedly installed on the support frame (9).

6. The folding mechanism of the airbag according to claim 5, characterized in that: A rotary joint (11) is installed on the support frame (9). The rotary joint (11) is coaxially installed with the connecting shaft (7) and the rotary joint (11) surrounds the outside of the connecting shaft (7). The rotary joint (11) is used to connect the telescopic device (10) to form a passage for fluid or circuit conduction.

7. The folding mechanism of the airbag according to claim 3 or 4, characterized in that: The folding plate (1) has an installation groove (3), and an installation frame (4) is installed in the installation groove (3); the roller (2) is installed on the installation frame (4), and the installation frame (4) can move in the installation groove (3).

8. The folding mechanism of the airbag according to claim 7, characterized in that: A spring (12) is installed on the folding plate (1), and the spring (12) is used to provide elastic force to the mounting frame (4). Under normal conditions, the elastic force of the spring (12) can drive the mounting frame (4) to move, causing the roller (2) to protrude outward from the folding plate (1).

9. The folding mechanism of the airbag according to claim 8, characterized in that: The mounting groove (3) of the folding plate (1) has a slot (13) for installing the spring (12) on its inner wall. A guide rod (14) is provided in the slot (13). A connecting block (15) is provided on the outer wall of the mounting frame (4). A through hole (16) matching the guide rod (14) is provided on the connecting block (15). The guide rod (14) is installed in the through hole (16), and the connecting block (15) is slidably connected to the guide rod (14). One end of the spring (12) abuts against the inner wall of the slot (13), and the other end abuts against the outer wall of the connecting block (15).

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