A closing mechanism with automatic rotating opening and closing function

Abstract

The application discloses a sealing mechanism with automatic rotating opening and closing function and belongs to the technical field of cabin sealing structure. The sealing mechanism comprises a cylinder body and sealing assemblies arranged on both sides of the cylinder body. The sealing assembly comprises a baffle, a pressing plate, a rotating pin shaft and an elastic assembly. The elastic assembly is arranged on the baffle and fixedly connected with the cabin at the other end. The baffle is provided with a first connecting sleeve. One end of the pressing plate is sleeved on the first connecting sleeve. The rotating pin shaft is coaxially arranged in the pin shaft through hole of the baffle, the first connecting sleeve and the pressing plate. The locking piece arranged on the side of the pressing plate is fixedly connected with the part of the rotating pin shaft inserted into the pressing plate, so that the pressing plate is fixedly assembled on the baffle. The conductive strip is glued on the arc end surface of the baffle and the pressing plate in contact with the cylinder body. The application realizes the functions of quick sealing and automatic resetting of the sealing mechanism without manual and mechanical actions.

Description

A closing mechanism with automatic rotation opening and closing function Technical Field

[0001] This invention relates to the field of cabin sealing structure technology, and specifically to a sealing mechanism with automatic rotation opening and closing function. Background Technology

[0002] With changes in the international situation and the development of equipment upgrades, lightweight cabin technology is widely used in ground equipment and vehicle cabins.

[0003] Due to the need for lightweight, high-strength, rainproof, and electromagnetic shielding performance of the transport compartment, and to ensure the sealing effect around the connection between the cylinder and the transport compartment, it is essential to design a sealing mechanism between the transport compartment and the cylinder. However, existing sealing mechanisms require manual operation, are made of metal parts, are heavy, have relatively poor environmental adaptability, and are not very reliable. Summary of the Invention

[0004] The main objective of this invention is to solve the aforementioned technical problems to a certain extent by proposing a closing mechanism with automatic rotation opening and closing function, which achieves rapid closing and automatic reset functions of the closing mechanism without human or mechanical action.

[0005] The above-mentioned problems to be solved by the present invention are achieved through the following technical solutions:

[0006] A sealing mechanism with automatic rotation opening and closing function is proposed, including a cylinder and sealing components disposed on both sides of the cylinder, wherein the sealing components switch the cylinder to a conductive sealed or loose state as the position of the cylinder changes.

[0007] The sealing assembly includes a baffle, a pressure plate, a rotating pin, and an elastic component. The elastic component is disposed on the baffle, with its other end fixedly connected to the chamber. The baffle is provided with a first connecting sleeve, and one end of the pressure plate is sleeved on the first connecting sleeve. The rotating pin passes through a pin through hole coaxially disposed on the baffle, the first connecting sleeve, and the pressure plate. A locking member disposed on the side of the pressure plate is fixedly connected to the part of the rotating pin inserted into the pressure plate to fix the pressure plate on the baffle. A conductive strip is glued to the arc-shaped end face of the baffle and the pressure plate that contacts the cylinder.

[0008] In some embodiments, the elastic component includes a fixed pin and a spring, with the two ends of the spring respectively attached to the two ends of the fixed pin. The baffle is provided with a second connecting sleeve, with one end of the fixed pin connected to the second connecting sleeve and the other end fixedly connected to the cabin body.

[0009] In some embodiments, a plurality of hollow grooves are provided along the length direction of the pressure plate.

[0010] In some embodiments, in a conductive sealed state, a quarter of the lower portion of the cylinder is exposed outside the sealing assembly.

[0011] In some embodiments, the baffle is integrally formed under high temperature and high pressure, and its forming process specifically includes the following steps:

[0012] Preparing the mold: First, clean the mold and remove the rust-preventive liquid. Use a scanner to check the dimensions of the mold cavity.

[0013] Thawing: Take the carbon fiber prepreg from the cold storage and allow it to thaw;

[0014] Material cutting: Cut the carbon fiber prepreg to the required size, use a panel machining center to cut PVC structural foam, and make holes at the positions of the pre-set first and second connecting sleeves.

[0015] Lay-up: First, lay up the carbon fiber prepreg in the lay-up order to form an inner carbon fiber board and an outer carbon fiber board. After laying the inner carbon fiber board and PVC structural foam, embed the processed first and second connecting sleeves into the PVC structural foam. Then lay up the outer carbon fiber board to form a three-layer lay-up structure of inner carbon fiber board, PVC structural foam and outer carbon fiber board.

[0016] Making the integral vacuum bag: Make the vacuum bag according to the process requirements of the autoclave, and lay out the breathable felt, sealing tape, vacuum bag film and air extraction nozzle in sequence;

[0017] Air tightness test: After the installation is completed, a vacuum is drawn. After vacuuming, the vacuum bag needs to be tested for leakage.

[0018] Curing: Curing is carried out using a curing oven, following the specified curing curve. After curing, the oven is cooled under pressure.

[0019] Demolding: Release the pressure and remove from the furnace when the furnace temperature drops below 60°C under pressure. Demold after the temperature returns to room temperature. Remove the vacuum auxiliary materials.

[0020] Inspection: Inspect the formed baffle and obtain the finished baffle.

[0021] In some embodiments, the airtightness test requires a vacuum degree of not less than 97 kPa and a time of not less than 1 hour.

[0022] In some embodiments, before performing leak detection on the vacuum bag, the vacuuming time should be maintained for more than 15 minutes. During leak detection, the vacuum system should be turned off first, and the vacuum gauge or vacuum display should be checked. It should be ensured that the data reading of the vacuum gauge or vacuum display should not drop by more than 5 kPa within 5 minutes. If the vacuum test fails, the leak point needs to be found and repaired until the vacuum test passes.

[0023] In some embodiments, high-temperature curing is performed under vacuum pressure, with a heating rate ≤3℃ / min and a cooling rate ≤3℃ / min, until the temperature of the part is below 60℃ before the pressure is released and the part is removed from the oven.

[0024] In some embodiments, both the inner carbon fiber plate and the outer carbon fiber plate are made of 200 g / m² carbon fiber prepreg and 150 g / m² carbon fiber prepreg, and the overall layering sequence is as follows: from top to bottom, one layer of 200 g / m² carbon fiber prepreg, one layer of 150 g / m² carbon fiber prepreg, one layer of 150 g / m² carbon fiber prepreg, one layer of 150 g / m² carbon fiber prepreg, one layer of 150 g / m² carbon fiber prepreg, one layer of 150 g / m² carbon fiber prepreg, one layer of 150 g / m² carbon fiber prepreg, one layer of 150 g / m² carbon fiber prepreg, one layer of 150 g / m² carbon fiber prepreg, one layer of 150 g / m² carbon fiber prepreg, one layer of 150 g / m² carbon fiber prepreg.

[0025] In some embodiments, adjacent carbon fiber prepregs are laid in a cross-shaped, vertically intersecting pattern.

[0026] The technical solution provided in this application has the following advantages compared with the prior art:

[0027] This invention applies force to the sealing component by changing the position of the cylinder, thereby driving the movement of the elastic component and the sealing component. It achieves the functions of rapid sealing and automatic reset of the sealing mechanism without the need for manual or mechanical action. Specifically, when the cylinder falls to its position, the pressure plate is stressed, causing the baffle to rotate to its maximum position, and sealing is achieved by generating pressure through the contact between the conductive strip and the outer wall of the cylinder. When the cylinder rises, the pressure plate is not stressed, and the baffle automatically rotates and opens and closes under the action of the spring to achieve reset.

[0028] Furthermore, based on the opening and closing angles of the closed components, movable grooves can be first opened on the transport compartment to limit the movement trajectory of the spring pin.

[0029] The baffle and pressure plate of this invention are integrally formed by high temperature and high pressure using carbon fiber material. Compared with metal structures, carbon fiber material has the characteristics of corrosion resistance and aging resistance, and can also be used in marine and other environments.

[0030] In the sealing assembly of the present invention, the baffle and pressure plate are made of carbon fiber material. The arc end face of the baffle and pressure plate in contact with the cylinder is bonded with a conductive strip. At the same time, the carbon fiber itself is conductive. After integral molding, it forms a complete sealing body. With the use of the conductive strip, the entire sealing position is electrically connected. Meanwhile, the conductive rubber strip also has a sealing function, realizing rainproof sealing and electromagnetic shielding at the sealing position. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0032] Figure 1 is a structural diagram of the opening and closing of the automatic rotation opening and closing mechanism of the present invention in its initial state.

[0033] Figure 2 is a structural diagram of the sealing and clamping state of the sealing mechanism with automatic rotation opening and closing function of the present invention;

[0034] Figure 3 is a front view of the closed component of the present invention;

[0035] Figure 4 is a side view of the closed component of the present invention;

[0036] Figure 5 is an assembly diagram of the closed component and the elastic component of the present invention;

[0037] Figure 6 is a standard curve diagram of the curing process of this invention.

[0038] Explanation of icon numbers:

[0039] 1-Cylinder body; 2-Sealing assembly; 201-Baffle; 202-Pressure plate; 203-Rotating pin; 3-First connecting sleeve; 4-Locking component; 5-Conductive strip; 6-Fixing pin; 7-Spring; 8-Second connecting sleeve. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0041] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0042] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0043] As shown in Figures 1-5, this invention proposes a sealing mechanism with an automatic rotational opening and closing function, including a cylindrical body 1 and sealing components 2 disposed on both sides of the cylindrical body 1. The sealing components 2 include a baffle 201, a pressure plate 202, a rotating pin 203, and an elastic component. The elastic component is disposed on the baffle 201, with its other end fixedly connected to the chamber. The baffle 201 is provided with a first connecting sleeve 3, and one end of the pressure plate 202 is fitted onto the first connecting sleeve 3. The rotating pin 203 passes through a pin through hole coaxially disposed on the baffle 201, the first connecting sleeve 3, and the pressure plate 202. A locking member 4 disposed on the side of the pressure plate 202 is inserted into the rotating pin 203. A fixed connection is made within the pressure plate 202 to fix the pressure plate 202 onto the baffle 201. Multiple hollow grooves are provided along the length of the pressure plate 202. Conductive strips 5 are glued to the arc-shaped end faces of the baffle 201 and the pressure plate 202 that contact the cylinder 1. The elastic component includes a fixing pin 6 and a spring 7. The two ends of the spring 7 are respectively hung on the two ends of the fixing pin 6. The baffle 201 is provided with a second connecting sleeve 8. One end of the fixing pin 6 is connected to the second connecting sleeve 8, and the other end is fixedly connected to the chamber. As the position of the cylinder 1 changes, the sealing component 2 switches the cylinder 1 to a conductive sealed or loose state.

[0044] During operation, when the cylinder 1 falls and contacts the pressure plate 202, the pressure plate 202 is subjected to force. Through the rotation of the pivot pin 203, the baffle 201 is rotated towards the cylinder 1. The spring 7 is gradually stretched and unfolded from the initial state. When the cylinder 1 falls to the position, the spring 7 is stretched to the maximum position, and the baffle 201 is also rotated to the position and clamps tightly against the outer wall of the cylinder 1. At this time, the conductive strip 5 on the baffle 201 and the pressure plate 202 forms a sealed and pressed seal with the outer wall of the cylinder 1. The pressing force mainly relies on the gravity of the cylinder 1. The overall sealing and conductive functions of the sealing mechanism are realized. In the conductive and sealed state, the lower quarter of the cylinder 1 is exposed outside the sealing component 2.

[0045] When the cylinder 1 is raised, the pressure plate 202 is not under force, and the baffle 201 automatically rotates and opens and closes under the force of the spring 7 to achieve reset. Furthermore, according to the opening and closing angle of the sealing component 2, a movable groove is opened on the transport compartment. The spring 7 pin moves within the range of the set movable groove. When the spring 7 pin is located at the leftmost position of the movable groove, the sealing component 2 is in the initial open and closed state. When the spring 7 pin is located at the rightmost position of the movable groove, the sealing component 2 is in the sealed and clamped state, thereby limiting the movement trajectory of the spring 7 pin.

[0046] This invention applies force to the sealing component 2 by changing the position of the cylinder 1, thereby driving the elastic component and the sealing component 2 to move. It achieves the functions of rapid sealing and automatic reset of the sealing mechanism without human or mechanical action. When the cylinder 1 falls into place, the pressure plate 202 is subjected to force, causing the baffle 201 to rotate to the maximum position, and sealing is achieved by generating pressure through the contact between the conductive strip 5 and the outer wall of the cylinder 1.

[0047] The pressure plate 202 and the baffle 201 are manufactured using the same molding process.

[0048] The baffle 201 is integrally molded under high temperature and high pressure. Its molding process specifically includes the following steps:

[0049] Prepare the mold: First, clean the mold with an organic solvent, wiping it more than twice to remove the rust inhibitor. Then, wipe it twice with a mold cleaner, then twice with a sealing agent, and finally four times with a release agent. Use a scanner to check the mold cavity dimensions. Once they meet the requirements, it can be used.

[0050] Thawing: Take the carbon fiber prepreg from the cold storage and allow it to thaw;

[0051] Material cutting: Cut the carbon fiber prepreg to the required size, use a panel machining center to cut PVC structural foam, and make holes at the positions of the pre-set first connecting sleeve 3 and second connecting sleeve 8.

[0052] Lay-up: First, lay up the carbon fiber prepreg in the lay-up order to form an inner carbon fiber plate and an outer carbon fiber plate. After laying the inner carbon fiber plate and PVC structural foam, embed the processed first connecting sleeve 3 and second connecting sleeve 8 into the PVC structural foam. Then lay up the outer carbon fiber plate to form a three-layer lay-up structure of inner carbon fiber plate, PVC structural foam and outer carbon fiber plate.

[0053] Making the integral vacuum bag: Make the vacuum bag according to the process requirements of the autoclave, and lay out the breathable felt, sealing tape, vacuum bag film and air extraction nozzle in sequence;

[0054] Air tightness test: After the installation is completed, a vacuum is drawn. The air tightness test requires a vacuum degree of not less than 97 kPa and a time of not less than 1 hour. After vacuuming, the vacuum bag needs to be leak tested. Before the vacuum bag leak test, the vacuum time should be maintained for more than 15 minutes. During the leak test, the vacuum system is turned off first, and the vacuum gauge or vacuum display is checked. It should be ensured that the data reading of the vacuum gauge or vacuum display does not drop by more than 5 kPa within 5 minutes. If the vacuum test fails, the leak point needs to be found and repaired until the vacuum test passes.

[0055] Curing: Use a curing oven for curing. Refer to Figure 6 for curing instructions. Curing should be carried out according to the specified curing curve. Curing should be performed at high temperature under vacuum pressure. The heating rate should be ≤3℃ / min and the cooling rate should be ≤3℃ / min. After curing, the parts should be cooled under pressure in the oven until the temperature of the parts is below 60℃ before the pressure can be released and the parts can be removed from the oven.

[0056] Demolding: Release the pressure and remove from the furnace when the furnace temperature drops below 60°C under pressure. Demold after the temperature returns to room temperature. Remove the vacuum auxiliary materials.

[0057] Inspection: The molded baffle 201 is inspected to obtain the finished baffle 201. Specifically, the resin is cured normally, without softening or stickiness, the fiber layer is tightly pressed, the resin is well impregnated, there are no voids, no dry areas, no fiber delamination, no resin-rich layers, the outer surface is flat, and there are no obvious dents on the surface. Dents on the outer surface not exceeding 0.2mm are considered qualified.

[0058] During the layup stage: both the inner and outer carbon fiber sheets are composed of 200 g / m² carbon fiber prepreg and 150 g / m² carbon fiber prepreg, with the 200 g / m² carbon fiber prepreg having a resin content of 45%. After autoclaving, the thickness of a single layer is 0.28 mm, and its density is 1.3 × 10⁻⁶. 3 The carbon fiber prepreg with a resin content of 37% and a density of 150 g / m³ is formed by autoclaving. After single-layer molding, it has a thickness of 0.15 mm and a density of 1.6 × 10⁻⁶. 3 kg / m³.

[0059] The overall layup sequence is as follows: from top to bottom, one layer of 200 g / m² carbon fiber prepreg, one layer of 150 g / m² carbon fiber prepreg, one layer of 150 g / m² carbon fiber prepreg, one layer of 150 g / m² carbon fiber prepreg, one layer of 150 g / m² carbon fiber prepreg, one layer of 150 g / m² carbon fiber prepreg, one layer of 150 g / m² carbon fiber prepreg, one layer of 150 g / m² carbon fiber prepreg, and one layer of 150 g / m² carbon fiber prepreg are laid in a cross-shaped vertical cross-lay.

[0060] It is worth noting that the carbon fiber prepreg layup is completed in a clean room, and the fiber direction should be kept straight during the layup process. The carbon fiber prepreg should not be folded. A scraper is used to compact the carbon fiber prepreg during the layup process to ensure that the carbon fiber prepreg is fully adhered to the mold surface. Air trapping and fiber wrinkling should be prevented during the layup process.

[0061] Secondly, to improve the adhesion of carbon fiber prepreg, an electric iron can be used for heating. The heating temperature should not exceed 65℃, and the iron should be moved continuously to prevent local overheating of the carbon fiber prepreg. When a certain layup needs to be re-laid, a cold air gun can be used to cool the layup, peel off the carbon fiber prepreg to be re-laid, and then re-lay it. During the operation, the temperature of the carbon fiber prepreg should be avoided from being too low to prevent the surface of the carbon fiber prepreg from showing signs of dampness. If dampness occurs, the layer of carbon fiber prepreg should be discarded. After the first layer is laid, and after every three layers thereafter, a temporary vacuum bag should be made to vacuum and compact the layup. During the compaction process, the vacuum degree should not be lower than -80KPa, and the time should be 5 to 15 minutes.

[0062] The baffle 201 and pressure plate 202 of this invention are integrally molded from carbon fiber material under high temperature and pressure. Compared with metal structures, carbon fiber material has the characteristics of corrosion resistance and aging resistance, and can also be used in marine and other environments. Furthermore, the baffle 201 and pressure plate 202 are made of carbon fiber material, and conductive strips 5 are glued to the arc-shaped end faces of the baffle 201 and pressure plate 202 that contact the cylinder 1. At the same time, carbon fiber itself is conductive. After integral molding, a complete sealing body is formed. With the use of conductive strips 5, the entire sealing position is electrically connected. At the same time, the conductive rubber strip also has a sealing function, realizing rainproof sealing and electromagnetic shielding at the sealing position.

[0063] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural transformations made using the contents of the specification and drawings of the present invention under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of patent protection of the present invention.

Claims

1. A closing mechanism with automatic rotation opening and closing function, characterized in that, The device includes a cylindrical body and sealing assemblies located on both sides of the cylindrical body. The sealing assemblies switch between a conductive sealing state and a loosened state depending on the position of the cylindrical body. Each sealing assembly includes a baffle, a pressure plate, a rotating pin, and an elastic component. The elastic component is located on the baffle, with its other end fixedly connected to the chamber. The baffle has a first connecting sleeve, and one end of the pressure plate is fitted onto the first connecting sleeve. The rotating pin passes through a pin through-hole coaxially arranged in the baffle, the first connecting sleeve, and the pressure plate. A locking member on the side of the pressure plate is fixedly connected to the portion of the rotating pin inserted into the pressure plate, thereby fixing the pressure plate onto the baffle. A conductive strip is glued to the arc-shaped end face in contact with the cylinder; the elastic component includes a fixed pin and a spring, with the two ends of the spring respectively hooked onto the two ends of the fixed pin; the baffle is provided with a second connecting sleeve, one end of the fixed pin is connected to the second connecting sleeve, and the other end is fixedly connected to the cabin; a movable groove is opened on the cabin, and the fixed pin moves within the range of the movable groove. When the fixed pin is at the leftmost position of the movable groove, the sealing component is in the initial open / closed state; when the spring pin is at the rightmost position of the movable groove, the sealing component is in the sealed and clamped state, thereby limiting the movement trajectory of the fixed pin; in the conductive sealed state, the lower quarter of the cylinder... The part is exposed on the outside of the closed component; the baffle is integrally molded under high temperature and pressure, and its molding process specifically includes the following steps: Mold preparation: First, clean the mold, remove the anti-rust liquid on the mold, and use a scanner to detect the mold cavity size; Material preparation: Take the carbon fiber prepreg from the cold storage and let it thaw; Material cutting: Cut the carbon fiber prepreg to the required size, use a panel processing center to cut the PVC structural foam, and make openings at the positions of the pre-set first and second connecting sleeves; Laying up: First, lay up the carbon fiber prepreg in the layup sequence to form the inner carbon fiber plate and the outer carbon fiber plate, then lay up the inner carbon fiber plate and the PVC structural foam, and then lay up the processed first and second connecting sleeves. The connecting sleeve is embedded in PVC structural foam, and then an outer carbon fiber plate is laid to form a three-layer structure of inner carbon fiber plate, PVC structural foam and outer carbon fiber plate; Vacuum bag fabrication: Vacuum bags are fabricated according to the autoclave process requirements, and breathable felt, sealing tape, vacuum bag film and suction nozzle are laid in sequence; Air tightness test: After laying, vacuum is drawn, and leakage test is performed on the vacuum bag; Curing: Curing is carried out in a curing oven according to the specified curing curve. After curing, it is cooled under pressure in the oven; Demolding: When the pressure is held and cooled to below 60°C in the oven, the pressure is released and the bag is removed from the oven. After returning to room temperature, it is demolded; Vacuum auxiliary materials are removed; Inspection: The formed baffle is inspected and the finished baffle is obtained.

2. The closing mechanism with automatic rotation opening and closing function according to claim 1, characterized in that, Multiple hollow grooves are provided along the length of the pressure plate.

3. The closing mechanism with automatic rotation opening and closing function according to claim 1, characterized in that, The airtightness test requires a vacuum level of not less than 97 kPa and a test time of not less than 1 hour.

4. The closing mechanism with automatic rotation opening and closing function according to claim 1, characterized in that, Before performing leak detection on the vacuum bag, the vacuuming time should be maintained for more than 15 minutes. During the leak detection, first turn off the vacuum system and check the vacuum gauge or vacuum display. It should be ensured that the data reading of the vacuum gauge or vacuum display does not drop by more than 5 kPa within 5 minutes. If the vacuum test fails, the leak point needs to be found and repaired until the vacuum test passes.

5. The closing mechanism with automatic rotation opening and closing function according to claim 1, characterized in that, Under vacuum pressure and high temperature curing, the heating rate should be ≤3℃ / min and the cooling rate should be ≤3℃ / min. The pressure can only be released and the part removed from the furnace when the temperature of the part is below 60℃.

6. The closing mechanism with automatic rotation opening and closing function according to claim 1, characterized in that, Both the inner and outer carbon fiber sheets are made of 200 g / m² carbon fiber prepreg and 150 g / m² carbon fiber prepreg, and the overall layering sequence is as follows: from top to bottom, one layer of 200 g / m² carbon fiber prepreg, one layer of 150 g / m² carbon fiber prepreg, one layer of 150 g / m² carbon fiber prepreg, one layer of 150 g / m² carbon fiber prepreg, one layer of 150 g / m² carbon fiber prepreg, one layer of 150 g / m² carbon fiber prepreg, one layer of 150 g / m² carbon fiber prepreg, one layer of 150 g / m² carbon fiber prepreg, one layer of 150 g / m² carbon fiber prepreg, one layer of 150 g / m² carbon fiber prepreg, and one layer of 150 g / m² carbon fiber prepreg.

7. The closing mechanism with automatic rotation opening and closing function according to claim 6, characterized in that, Adjacent carbon fiber prepregs are laid in a cross-shaped, vertically intersecting pattern.

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