Cover plate reset auxiliary folding device and method

Abstract

The invention relates to a cover plate reset auxiliary folding device and method, and belongs to the field of safety buffer equipment. According to the technical scheme, the cover plate reset auxiliary folding device comprises a base and a connecting rod mechanism, the base is provided with a hinge position point and a curve guide structure, and the curve guide structure is located below the front side of the hinge position point; the connecting rod mechanism comprises a basic rod body and an action rod body, the first end of the basic rod body is hinged to the hinge point, a linear driving assembly is arranged in the middle of the basic rod body, the middle of the action rod body is hinged to the moving end of the linear driving assembly, and the first end of the action rod body is installed in the curve guide structure through a connecting shaft; and a connecting rod body is arranged between the second end of the basic rod body and the second end of the action rod body. According to the scheme, on the basis of the connecting rod mechanism, through the curve design of the curve guide structure, the action of firstly pressing down and then lifting up is achieved, 180-degree overturning resetting of the cover plate is completed, manual labor is replaced, the risk of personal injury is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of safety buffer equipment, in particular to a cover plate resetting auxiliary folding device and a cover plate resetting auxiliary folding method. Background Art

[0002] In some devices requiring emergency cushioning, such as various airbags, the airbag is stored in a chamber in the device when in standby mode. This chamber typically has a cover to prevent the airbag from escaping. The airbag is connected to a compressed air source. When the cushioning device is triggered, the compressed air source is activated, rapidly inflating the airbag. Once inflated, the airbag pushes open the cover to provide cushioning.

[0003] In the above-mentioned device, in order to prevent the cover from being bounced away and lost when the airbag is deployed, the cover is usually hingedly connected to the equipment frame at the opening of the accommodating cavity, and an assist spring is installed on the hinge shaft. On the one hand, this makes the cover open more quickly, and on the other hand, it remains in an open state after the airbag is fully deployed and deflated and recovered.

[0004] Based on this structure, when the equipment is recovered, the airbag is first deflated and returned to the chamber before the cover is closed. Closing the cover requires manual pressure to achieve a 180-degree flip, which can lead to numerous safety issues, such as tilting due to a change in support or rebounding of the folded cover. Furthermore, traditional manual pressure requires a certain number of workers and strength. Summary of the Invention

[0005] The present invention aims to solve the problem that the airbag accommodating chamber cover of the current buffer device needs to be manually reset, which is inefficient and has certain safety hazards. It provides a cover reset auxiliary folding device.

[0006] In order to solve the above problems, the technical solution adopted by the present invention is: a cover reset auxiliary folding device, comprising a base and a connecting rod mechanism installed on the base, the base having a hinge point and a curved guide structure, the curved guide structure being located below the front side of the hinge point; along the direction forward away from the hinge point, the curved guide structure comprises a first guide section and a second guide section, the first guide section is inclined downward, the second guide section is inclined upward, and the lower ends of the first guide section and the second guide section are smoothly transitioned; the connecting rod mechanism comprises a basic rod body and an action rod body, the first end of the basic rod body is hinged on the hinge point, a linear drive assembly is provided in the middle of the basic rod body, the middle part of the action rod body is hinged to the moving end of the straight drive assembly, the first end of the action rod body is installed in the curved guide structure through a connecting shaft, and a connecting rod body is provided between the second end of the basic rod body and the second end of the action rod body. This solution designs a cover plate resetting auxiliary folding device, which is based on a connecting rod mechanism. Through the curve design of the curve guide structure, the basic rod and the action rod are swung together and the position exchange of the second ends of the two is achieved, and the action of pressing down first and then lifting up is realized, which cleverly completes the 180° flipping and resetting of the cover plate, replaces manual labor, greatly reduces the risk of personal injury, and improves work efficiency.

[0007] As a preferred implementation of the cover repositioning and auxiliary folding device, the first guide segment has a smaller inclination angle relative to the horizontal than the second guide segment. These different inclination angles divide the cover folding process into two stages: slow downward pressure to flip the cover, followed by rapid upward repositioning. This meets the mechanical and motion requirements of cover folding. The slow downward pressure stage gently initiates the cover folding, preventing damage from excessive force; the rapid upward repositioning stage improves work efficiency and shortens the time it takes to fold and reset the cover. Furthermore, the different inclination angles optimize the motion trajectory of the linkage mechanism, ensuring more coordinated movement between the various components.

[0008] As a preferred implementation of the cover repositioning and auxiliary folding device, the first guide segment and the second guide segment gradually increase in inclination as they move forward away from the hinge point. This allows for more continuous and smooth changes in force and speed during the cover folding process, avoiding sudden changes in force and speed. This not only better protects the cover from damage caused by uneven force or impact during folding, but also makes the linkage mechanism move more smoothly and naturally, reducing vibration and noise during movement and improving the stability and reliability of the device.

[0009] As a preferred implementation scheme of a cover plate resetting auxiliary folding device, the two ends of the connecting rod body are respectively hinged to the base rod body and the action rod body; a pressure block is provided at each end of the connecting rod body, the pressure block is cylindrical, one end face of the pressure block is connected to the side of the connecting rod body, and the diameter of the pressure block is greater than the width of the connecting rod body. The provision of the pressure block increases the contact area with the cover plate, avoids local stress concentration, makes the cover plate more evenly stressed, and effectively prevents the cover plate from being deformed or damaged due to excessive local stress during the folding process; the structure of the cylindrical pressure block has low friction during contact and relative movement with the cover plate, which can reduce wear on the cover plate surface.

[0010] As a preferred implementation of a cover resetting and auxiliary folding device, the linkage mechanism comprises two sets of linkage mechanisms, with two base rods, two action rods, and two connecting rods arranged parallel to each other and moving synchronously. These two sets of parallel and synchronous linkage mechanisms provide increased support and points of force for the cover, ensuring a more balanced and uniform force applied to the cover during folding. This effectively avoids problems such as tilting and twisting of the cover caused by uneven force, ensuring the precision and quality of the cover folding and resetting. Furthermore, the two linkage mechanisms work in tandem to provide greater driving force, improving the device's load capacity.

[0011] As a preferred implementation scheme of a cover plate resetting auxiliary folding device, the base includes two side panels, the two side panels are parallel to each other, a connecting block is provided between the two side panels, the upper part of the connecting block is higher than the top edge of the side panel, the hinge point is located at the upper part of the connecting block, and the curved guide structure is a curved groove opened on the side panel.

[0012] As a preferred implementation scheme of the cover resetting auxiliary folding device, with the hinge point as the origin, the forward direction is the positive direction of the X axis, and the upward direction is the positive direction of the Y axis, the curve equation of the first guide segment is:

[0013]

[0014]

[0015]

[0016] The curve equation of the second guide segment is:

[0017]

[0018]

[0019]

[0020] Where: T is the total time it takes for the first end of the action rod to run along the curved guide structure once; is the angle between the base rod and the X-axis.

[0021] By accurately setting the guide segment trajectory through the curve equation, the connecting rod mechanism can be precisely coordinated to ensure high precision and consistency in the folding and resetting of the cover.

[0022] As a preferred implementation of the cover repositioning and auxiliary folding device, the linear drive assembly is a linear motor. As a linear drive assembly, a linear motor offers fast response and high precision. It can quickly and accurately drive the actuator, achieving precise control of the cover folding action and ensuring accurate and consistent cover folding and repositioning. Furthermore, the linear motor offers excellent motion stability and generates minimal vibration and noise during operation, providing a favorable operating environment for the device and extending its service life.

[0023] On the other hand, the present invention also provides a cover plate reset auxiliary folding method, which uses the above-mentioned cover plate reset auxiliary folding device, the cover plate to be reset is installed on the equipment frame, and the cover plate reset auxiliary folding device is in an initial state. In the initial state, the base rod is in an upright state. The method includes the following steps: S1. Move the equipment rack to the set position relative to the cover reset auxiliary folding device; S2. The linear drive assembly drives the action rod to move in the direction away from the hinge point. At this time, the first end of the action rod moves along the first guide segment, the base rod swings diagonally downward to the front, and the second end of the base rod presses down the cover to fold it; S3. The linear drive assembly drives the action rod to continue moving in the direction away from the hinge point, the second end of the action rod exceeds the second end of the base rod in the positive direction of the X-axis, and the second end of the action rod continues to press down the cover to further fold it; S4 linear drive assembly drives the action rod to continue moving in the direction away from the hinge point, the first end of the action rod enters the second guide section, the action rod moves diagonally upward, the cover is lifted up and fits the bottom of the equipment rack; S5. Remove the equipment rack and restore the cover and auxiliary folding device to their initial state.

[0024] As a preferred implementation of the cover repositioning and assisted folding method, the base rod rotates at a constant speed around the hinge point under the drive of the linear drive assembly. This constant rotation of the base rod ensures uniform and stable force on the cover during folding, preventing impacts on the cover caused by sudden speed changes, reducing the risk of damage to the cover, and ensuring smooth and reliable folding of the cover.

[0025] The above technical solution demonstrates the beneficial effects of the present invention: This device, based on a linkage mechanism and a curved guide structure, achieves 180° flipping and resetting of the cover plate through ingenious structural design and parameter optimization, eliminating manual operation, reducing the risk of personal injury, and significantly improving work efficiency. The guide section's varying tilt angles and gradient gradient ensure that the cover plate folding process complies with mechanical requirements, resulting in smoother and more efficient movements, reduced impact and wear, and improved device stability while ensuring cover plate safety. The connecting rod and pressure block design ensures uniform force distribution on the cover plate, preventing deformation and surface wear. Two synchronized linkages increase support points, improving load capacity and folding accuracy. The base structure is stable and easy to manufacture and install. The curved equation precisely controls the motion trajectory, achieving high-precision folding. The linear drive assembly utilizes a linear motor, offering fast response, high precision, and smooth operation, extending the life of the device. Furthermore, this folding method achieves automatic flipping and resetting of the cover plate. Simultaneously, the uniform rotation of the base rod stabilizes the force distribution on the cover plate, further ensuring the reliability of the folding operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for the description. 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 any creative work.

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of embodiment 1 of the present invention.

[0028] Figure 2 This is a schematic diagram of the main structure of embodiment 1 of the present invention.

[0029] Figure 3 Schematic diagram of the coordinate system in the first embodiment of the present invention.

[0030] Figure 4 This is a schematic diagram of the working process of the second embodiment of the present invention. Figure 1 .

[0031] Figure 5 This is a schematic diagram of the working process of the second embodiment of the present invention. Figure 2 .

[0032] Figure 6 This is a schematic diagram of the working process of the second embodiment of the present invention. Figure 3 .

[0033] Figure 7 This is a schematic diagram of the working process of the second embodiment of the present invention. Figure 4 .

[0034] Figure 8 This is a schematic diagram of the working process of the second embodiment of the present invention. Figure 5 .

[0035] Description of main reference numerals 1. Base, 11. Hinge point, 12. Curved guide structure, 12-1. First guide section, 12-2. Second guide section, 13. Side plate, 14. Connecting block, 2. Basic rod, 21. Linear drive assembly, 3. Action rod, 4. Connecting rod, 5. Press block, 6. Cover, 7. Equipment rack. DETAILED DESCRIPTION

[0036] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in this specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this patent.

[0037] like Figure 1 As shown, a cover plate resetting auxiliary folding device includes a base 1 and a connecting rod mechanism installed on the base 1, the base 1 has a hinge point 11 and a curved guide structure 12, specifically, the base 1 includes two side panels 13, the two side panels 13 are parallel to each other, and a connecting block 14 is provided between the two side panels 13, the upper part of the connecting block 14 is higher than the top edge of the side panel 13, the hinge point 11 is located at the upper part of the connecting block 14, the curved guide structure 12 is a curved groove opened on the side panel 13, and the connecting rod mechanism is provided with two groups, which are respectively provided near the partitions 13 on both sides.

[0038] like Figure 2 As shown, the curved guide structure 12 is located below the front side of the hinge point 11 (the direction of the device close to the cover is the front, i.e. Figure 1-8 Along the direction away from the hinge point 11, the curved guide structure 12 includes a first guide segment 12-1 and a second guide segment 12-2, the first guide segment 12-1 is inclined downward, and the second guide segment 12-2 is inclined upward, and the lower ends of the first guide segment 12-1 and the second guide segment 12-2 are smoothly transitioned and connected, the inclination angle of the first guide segment 12-1 relative to the horizontal direction is smaller than the inclination angle of the second guide segment 12-2 relative to the horizontal direction, and along the direction away from the hinge point 11, the inclination degree of the first guide segment 12-1 gradually increases, and the inclination degree of the second guide segment 12-2 gradually increases.

[0039] The connecting rod mechanism includes a base rod 2 and an action rod 3. The first end of the base rod 2 is hinged to the hinge point 11. A linear drive assembly 21 is provided in the middle of the base rod 2. The middle of the action rod 3 is hinged to the moving end of the linear drive assembly 21. The first end of the action rod 3 is installed in the curved guide structure via a connecting shaft. A connecting rod 4 is provided between the second end of the base rod 2 and the second end of the action rod 3. The two ends of the connecting rod 4 are hinged to the base rod 2 and the action rod 3 respectively. A pressure block 5 is provided at each end of the connecting rod 4. The pressure block 5 is cylindrical, and one end face of the pressure block 5 is connected to the side of the connecting rod 4. The diameter of the pressure block 5 is greater than the width of the connecting rod 4. The two base rods 2, two action rods 3, and two connecting rods 4 of the two sets of connecting rod mechanisms are parallel to each other and move synchronously.

[0040] The linear drive assembly 21 is a linear motor. Specifically, a slot can be opened in the middle of the base rod body 2, and the linear motor is placed in the slot. A hinge shaft is set on the moving block of the linear motor and is hinged to the action connecting rod 3.

[0041] For the curved guide structure 12, as Figure 3 As shown, a coordinate system is established with the hinge point 11 as the origin O, the forward direction as the positive direction of the X axis, and the upward direction as the positive direction of the Y axis. Figure 3 In the figure, B is the hinge point between the basic rod body 2 and the connecting rod body 4, A is the hinge point between the action rod body 3 and the linear drive component 21, C is the hinge point between the action rod body 3 and the connecting rod body 4, and D is the point where the action rod body 3 is connected to the curved guide structure 12.

[0042] The base rod 2 rotates 45° clockwise and then 15° counterclockwise. The linear drive assembly moves in a linear motion. The speed of the rotational motion can be expressed as , the speed of linear motion can be expressed as ,in The time required for the entire work process; Let this time be time , at this point exist On the movement, at this time , , at this time you can The point coordinates are expressed as , calculated using the cosine theorem: ,Right now .

[0043] Now we can get from the geometric properties , you can click The coordinates of The length of the point The coordinates of The coordinates are .

[0044] Assume that this is the time , at this point exist On the movement, at this time , , at this time you can The point coordinates are expressed as , calculated using the cosine theorem: ,Right now .

[0045] From the geometric properties we can get , you can click The coordinates of The length of the point The coordinates of The coordinates are .

[0046] Furthermore, the curve equation of the first guide segment 12-1 is:

[0047]

[0048]

[0049]

[0050] The curve equation of the second guide section 12-2 is:

[0051]

[0052]

[0053]

[0054] In the formula is the angle between the base rod 2 and the X-axis.

[0055] Example 2 This embodiment further provides a cover plate reset auxiliary folding method, using the cover plate reset auxiliary folding device provided in the first embodiment, the cover plate to be reset 6 is installed on the equipment rack 7, and the cover plate reset auxiliary folding device is in the initial state. In the initial state, Figure 2 As shown, the base rod body 2 is in an upright state, and the method includes the following steps: S1. Figure 4 As shown, the equipment frame 7 is moved to the set position of the auxiliary folding device relative to the cover; S2. Figure 5 As shown, the linear drive assembly 21 drives the action rod 3 to move away from the hinge point 11. At this time, the first end of the action rod 3 moves along the first guide section 12-1, and the base rod 2 swings forward and downward. The second end of the base rod 2 presses down the cover plate 6 to fold it. S3. Figure 6 、 7 As shown, the linear drive assembly 21 drives the action rod 3 to continue moving in the direction away from the hinge point 11, and the position of the second end of the action rod 3 in the positive direction of the X-axis exceeds the second end of the base rod 2, and the second end of the action rod 3 continues to press down the cover plate 6 to further fold it; S4. Figure 8 As shown, the linear drive assembly 21 drives the action rod 3 to continue moving in the direction away from the hinge point 11, and the first end of the action rod 3 enters the second guide section 12-2. The action rod 3 moves obliquely upward, pushing the cover plate 6 upward and fitting it to the bottom of the equipment frame 7; S5. The equipment rack 7 is removed, and the cover is reset and the auxiliary folding device is restored to its initial state.

[0056] In the above process, driven by the linear drive assembly, the base rod 2 rotates around the hinge point 11 at a uniform speed.

[0057] The advantages of the present invention lie in its ingenious structural design and parameter optimization, based on a linkage mechanism and a curved guide structure. This device achieves 180° flipping and resetting of the cover, eliminating manual operation, reducing the risk of personal injury, and significantly improving work efficiency. The guide section's varying tilt angles and gradual gradient ensure that the cover folding process complies with mechanical requirements, resulting in smoother and more efficient movements, reduced impact and wear, and improved device stability while ensuring cover safety. The connecting rod and pressure block design ensures uniform force distribution on the cover, preventing deformation and surface wear. Two synchronized linkages increase support points, improving load capacity and folding accuracy. The base structure is stable and easy to manufacture and install. The curve equation precisely controls the motion trajectory, achieving high-precision folding. The linear drive assembly utilizes a linear motor, offering fast response, high precision, and smooth operation, extending the life of the device. Furthermore, this folding method achieves automatic flipping and resetting of the cover. Simultaneously, the uniform rotation of the base rod stabilizes the force distribution on the cover, further ensuring the reliability of the folding operation.

[0058] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cover plate resetting auxiliary folding device, characterized in that: The invention comprises a base (1) and a connecting rod mechanism mounted on the base (1), wherein the base (1) has a hinge point (11) and a curved guide structure (12), wherein the curved guide structure (12) is located below the front side of the hinge point (11); in a direction away from the hinge point (11), the curved guide structure (12) comprises a first guide segment (12-1) and a second guide segment (12-2), wherein the first guide segment (12-1) is inclined downward, and the second guide segment (12-2) is inclined upward, and the lower ends of the first guide segment (12-1) and the second guide segment (12-2) are connected in a smooth transition manner; The connecting rod mechanism comprises a basic rod body (2) and an action rod body (3), wherein the first end of the basic rod body (2) is hinged on the hinge point (11), a linear drive assembly (21) is provided in the middle of the basic rod body (2), the middle of the action rod body (3) is hinged to the moving end of the linear drive assembly (21), the first end of the action rod body (3) is mounted in the curved guide structure via a connecting shaft, and a connecting rod body (4) is provided between the second end of the basic rod body (2) and the second end of the action rod body (3).

2. The cover resetting auxiliary folding device according to claim 1, characterized in that: The inclination angle of the first guide section (12-1) relative to the horizontal direction is smaller than the inclination angle of the second guide section (12-2) relative to the horizontal direction.

3. The cover resetting auxiliary folding device according to claim 2, characterized in that: In a direction moving forward away from the hinge point (11), the inclination of the first guide segment (12-1) gradually increases, and the inclination of the second guide segment (12-2) gradually increases.

4. The cover resetting auxiliary folding device according to claim 1, characterized in that: The two ends of the connecting rod body (4) are hinged to the base rod body (2) and the action rod body (3) respectively; a pressure block (5) is provided at each end of the connecting rod body (4), the pressure block (5) is cylindrical, one end face of the pressure block (5) is connected to the side face of the connecting rod body (4), and the diameter of the pressure block (5) is greater than the width of the connecting rod body (4).

5. The cover resetting auxiliary folding device according to claim 1, characterized in that: The connecting rod mechanism is provided with two groups, and the two basic rod bodies (2), the two action rod bodies (3) and the two connecting rod bodies (4) of the two groups of connecting rod mechanisms are parallel to each other and move synchronously.

6. The cover resetting auxiliary folding device according to claim 1, characterized in that: The base (1) includes two side panels (13), the two side panels (13) are parallel to each other, a connecting block (14) is provided between the two side panels (13), the upper portion of the connecting block (14) is higher than the top edge of the side panel (13), the hinge point (11) is located at the upper portion of the connecting block (14), and the curved guide structure (12) is a curved groove provided on the side panel (13).

7. The cover resetting auxiliary folding device according to claim 1, characterized in that: With the hinge point (11) as the origin, the forward direction is the positive direction of the X axis, and the upward direction is the positive direction of the Y axis, the curve equation of the first guide segment (12-1) is: The curve equation of the second guide section (12-2) is: Where: T is the total time taken for the first end of the action rod (3) to run along the curved guide structure once; is the angle between the base rod (2) and the X-axis.

8. The cover resetting auxiliary folding device according to claim 1, characterized in that: The linear drive component (21) is a linear motor.

9. A cover plate resetting auxiliary folding method, characterized in that: The cover plate resetting auxiliary folding device according to claim 7 is used, the cover plate (6) to be reset is installed on the equipment frame (7), and the cover plate resetting auxiliary folding device is in an initial state. In the initial state, the base rod (2) is in an upright state. The method includes the following steps: S1. The equipment rack (7) is moved to a set position relative to the cover to reset the auxiliary folding device; S2. The linear drive assembly (21) drives the action rod (3) to move in a direction away from the hinge point (11). At this time, the first end of the action rod (3) moves along the first guide section (12-1), the base rod (2) swings forward and downward, and the second end of the base rod (2) presses down the cover plate (6) to fold it; S3. The linear drive assembly (21) drives the action rod (3) to continue moving in a direction away from the hinge point (11), and the second end of the action rod (3) exceeds the second end of the base rod (2) in the positive direction of the X-axis. The second end of the action rod (3) continues to press down the cover plate (6) to further fold it; S4. The linear drive assembly (21) drives the action rod (3) to continue moving in a direction away from the hinge point (11), and the first end of the action rod (3) enters the second guide section (12-2). The action rod (3) moves diagonally upward, pushing the cover plate (6) upward and fitting it to the bottom of the equipment rack (7); S5. The equipment frame (7) is removed, and the cover is reset to restore the auxiliary folding device to its initial state.

10. The cover plate resetting auxiliary folding method according to claim 9, characterized in that: Driven by the linear drive assembly, the base rod (2) rotates at a uniform speed around the hinge point (11).

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