A weather tight hatch cover with a buffer opening and closing mechanism for a ship

Abstract

This invention relates to the field of marine equipment technology, specifically to a marine weatherproof hatch cover with a buffer opening and closing mechanism. The cover includes a main body hinged to the top of a marine weatherproof hatch. Wing plates are fixed to both sides of the main body, and handles are fixed to the top surfaces of the wing plates. Support plates are fixed to both sides of the marine weatherproof hatch, and rubber buffer pads are fixed to the top surfaces of the support plates. A wing plate is fixed to the side of the support plate away from the marine weatherproof hatch. Insert blocks are inserted into the surfaces of the wing plates, with one end of the insert block inserted into the surface of the wing plate. The advantages are: the multi-layered sealing structure formed by the plug ring, rubber pad, and sealing rubber pad effectively prevents external liquid from seeping in, and the rubber buffer pad reduces the impact force during closing, providing a buffering effect. Simultaneously, the innovative limiting structure, utilizing the cooperation of components such as the insert block and handle, ensures that the hatch cover is not accidentally opened after closing, preventing accidental opening during ship turbulence.

Description

Technical Field

[0001] This invention relates to the field of marine equipment technology, specifically to a marine weatherproof hatch cover with a buffer opening and closing mechanism. Background Technology

[0002] In the marine industry, weatherproof hatch covers are crucial components for ensuring the safety and sealing performance of ship compartments. Traditional marine weatherproof hatch covers have several shortcomings in terms of opening and closing operations and sealing cushioning. On the one hand, the opening and closing process lacks an effective cushioning mechanism. When closing, the hatch cover is prone to damage to the hatch structure and the hatch cover itself due to excessive impact force, affecting its service life. After closing, the sealing effect is also difficult to guarantee. In complex sea conditions, seawater and rainwater can easily seep into the compartment, damaging the equipment and cargo inside. On the other hand, the limiting structure of traditional hatch covers is not reliable enough. During ship navigation, the hatch cover is prone to accidentally opening due to turbulence, leading to safety hazards. In addition, some hatch covers are complex to operate, increasing the workload of the crew.

[0003] Therefore, developing a marine weatherproof hatch cover with good cushioning, sealing and reliable limiting functions is of great practical significance. Summary of the Invention

[0004] The purpose of this invention is to provide a marine weatherproof hatch cover with a buffer opening and closing mechanism to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a marine weatherproof hatch cover with a buffer opening and closing mechanism, comprising a marine weatherproof hatch cover body, the marine weatherproof hatch cover body being hinged to the top of a marine weatherproof hatch, wing plates being fixed on both sides of the marine weatherproof hatch cover body, a handle being fixed on the top surface of the wing plates, a support plate being fixed on both sides of the marine weatherproof hatch, a rubber buffer pad being fixed on the top surface of the support plate, a wing plate being fixed on the side of the support plate away from the marine weatherproof hatch, and an insert being inserted into the surface of the wing plate, one end of the insert being inserted into the surface of the wing plate;

[0006] A handle is inserted into the top of the baffle, and the bottom end of the handle is inserted into the surface of the plug. A connecting block is fixed to one end of the plug, and an elastic traction plate is fixed to one end of the connecting block. The elastic traction plate pushes the handle downward.

[0007] The bottom of the marine weatherproof hatch cover is fixed with a plug ring and a rubber pad. One end of the rubber pad is clamped between the marine weatherproof hatch and the marine weatherproof hatch cover body, and the bottom end of the rubber pad is inserted between the plug ring and the marine weatherproof hatch. The inner wall of the marine weatherproof hatch is fixed with a bracket, and the plug ring is pressed against the bottom plate of the bracket.

[0008] Preferably, two notches are provided on one side of the marine weathertight hatch body, and two connecting handles are fixed on the top surface of the marine weathertight hatch. The connecting handles are inserted into the notches, and the surface of the connecting handles is provided with insertion holes. Limiting shafts are inserted into the insertion holes and fixed on two parallel side walls of the notches.

[0009] Preferably, a connecting plate one is fixed to the front end of the marine weathertight hatch cover body, and a connecting plate two is fixed to the front end of the marine weathertight hatch. Both the connecting plate one and the connecting plate two have round holes on their surfaces. After the marine weathertight hatch cover body is placed on top of the marine weathertight hatch, the round holes on the surfaces of the connecting plate one and the connecting plate two correspond to each other, and the same limiting pin is inserted into the two round holes.

[0010] Preferably, the outer ring size of the plug ring is smaller than the slot size of the marine weathertight hatch, the bracket is an annular plate with an "L" shaped end face, the bottom plate of the bracket has multiple through holes, and a sealing rubber pad is fixed on the top surface of the bottom plate of the bracket. The sealing rubber pad is sandwiched between the plug ring and the bracket and undergoes elastic deformation.

[0011] Preferably, both the support plate and the rubber buffer pad are arc-shaped plate structures. After the marine weatherproof hatch cover body overlaps the top of the marine weatherproof hatch, the wing plate is inserted between the baffle and the marine weatherproof hatch, and the wing plate presses on the rubber buffer pad. The surface of the baffle has a second insertion opening, and the surface of the wing plate has a third insertion opening. The insert block passes through the second insertion opening and is inserted into the third insertion opening. The insert block limits the wing plate between the baffle and the marine weatherproof hatch.

[0012] Preferably, the top surface of the baffle is provided with a reserved groove, the bottom surface of the reserved groove is provided with an insertion port, the top surface of the insertion block is provided with a positioning groove, the height of the insertion handle is greater than the depth of the insertion port, and the insertion handle is inserted into the positioning groove after passing through the insertion port.

[0013] Preferably, the insertion handle has an inclined surface on one side of the top end, and a side groove is opened at the bottom end of the insertion handle. The side groove has a U-shaped plate structure, and an elastic rubber band is fixed on the surface of the side groove. The two ends of the elastic rubber band are respectively fixed on two parallel side walls of the insertion port. After the elastic traction plate pushes the insertion handle into the positioning groove, the insertion handle stretches the elastic rubber band downward to produce elastic deformation.

[0014] Preferably, the connecting block has an "L"-shaped plate structure, the top plate of the connecting block is inserted into the reserved groove, the elastic traction plate has a retaining strip fixed at the end away from the connecting block, the retaining strip is a right-angled trapezoidal strip, the retaining strip is blocked on the side of the baffle facing away from the connecting block, a pull ring is fixed on the top surface of one end of the elastic traction plate, and an elastic support plate is fixed between the top surface of the elastic traction plate and the connecting block.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The marine weathertight hatch cover with a buffer opening and closing mechanism proposed in this invention allows for easy opening; simply removing the limiting pin allows the hatch cover body to rotate around the limiting axis. When closed, a multi-layered sealing structure, consisting of a plug ring, rubber gasket, and sealing rubber gasket, effectively prevents external liquid infiltration. The rubber buffer gasket also reduces the impact force during closing, providing a cushioning effect. Simultaneously, the innovative limiting structure, utilizing components such as insert blocks and handles, ensures that the hatch cover is not accidentally opened after closing, preventing accidental opening during ship movement and ensuring navigational safety. Overall, this significantly improves the performance and reliability of marine weathertight hatch covers. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 for Figure 1 Sectional view of the structure at point AA;

[0019] Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point C;

[0020] Figure 4 for Figure 1 Structural cross-section view at point BB;

[0021] Figure 5 for Figure 4 Enlarged schematic diagram of the structure at point D;

[0022] Figure 6 for Figure 5 Enlarged schematic diagram of the structure at point E in the middle;

[0023] Figure 7 This is a schematic diagram of the connection structure between the insert block and the connecting block of the present invention;

[0024] Figure 8 This is a schematic diagram of the insert handle structure of the present invention;

[0025] Figure 9 This is a schematic diagram of the connection structure between the tray and the baffle of the present invention;

[0026] Figure 10 This is a schematic diagram of the connection structure between the wing plate and the handle of the present invention;

[0027] Figure 11 This is a schematic diagram of the structure of the marine weatherproof hatch cover body after it is opened on the marine weatherproof hatch according to the present invention.

[0028] In the diagram: Marine weathertight hatch cover body 1, notch 101, limiting shaft 102, connecting handle 103, connecting plate one 104, plug ring 105, rubber pad 106; Marine weathertight hatch 2, connecting plate two 201, limiting pin 202, support plate 3, rubber buffer pad 301, baffle 302, reserved groove 303, insertion port one 304, insertion port two 305, wing plate 4, insertion port three 401, handle 402, insertion block 5, positioning groove 501, connecting block 502, elastic traction plate 503, locking strip 504, pull ring 505, elastic support plate 506, insertion handle 6, side groove 601, elastic rubber band 602, bracket 7, sealing rubber pad 701, through hole 702. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figures 1 to 11 This invention provides a technical solution: a marine weatherproof hatch cover with a buffer opening and closing mechanism, comprising a marine weatherproof hatch cover body 1, which is hinged to the top of a marine weatherproof hatch 2. Two notches 101 are formed on one side of the marine weatherproof hatch cover body 1. Two connecting handles 103 are fixed to the top surface of the marine weatherproof hatch 2. The connecting handles 103 are inserted into the notches 101. Insertion holes are formed on the surface of the connecting handles 103, and limit shafts 102 are inserted into the insertion holes. The pivot 102 is fixed on two parallel sidewalls of the notch 101; the front end of the marine weathertight hatch cover body 1 is fixed with a connecting plate 104, and the front end of the marine weathertight hatch 2 is fixed with a connecting plate 201. Both the surface of the connecting plate 201 and the connecting plate 104 are provided with round holes. After the marine weathertight hatch cover body 1 is placed on top of the marine weathertight hatch 2, the round holes on the surfaces of the connecting plate 104 and the connecting plate 201 correspond to each other, and the same limiting pin 202 is inserted into the two round holes.

[0031] After the limiting pin 202 is pulled out from the round hole on the surface of connecting plate 104 and connecting plate 201, the marine weathertight hatch body 1 can be pulled to rotate around the limiting shaft 102 as the central axis, so as to open the marine weathertight hatch body 1. The operation is simple and convenient.

[0032] To achieve buffering and sealing after the marine weatherproof hatch cover body 1 is closed, the following is proposed:

[0033] A plug ring 105 and a rubber pad 106 are fixed to the bottom of the marine weathertight hatch cover body 1. One end of the rubber pad 106 is clamped between the marine weathertight hatch 2 and the marine weathertight hatch cover body 1, and the bottom end of the rubber pad 106 is inserted between the plug ring 105 and the marine weathertight hatch 2. A bracket 7 is fixed to the inner wall of the marine weathertight hatch 2, and the plug ring 105 is pressed on the bottom plate of the bracket 7. The outer ring size of the plug ring 105 is smaller than the slot size of the marine weathertight hatch 2. The bracket 7 is an annular plate with an "L" shaped end face. Multiple through holes 702 are opened on the bottom plate of the bracket 7, and a sealing rubber pad 701 is fixed on the top surface of the bottom plate of the bracket 7. The sealing rubber pad 701 is clamped between the plug ring 105 and the bracket 7 and undergoes elastic deformation.

[0034] When the marine weatherproof hatch cover body 1 is closed on top of the marine weatherproof hatch 2, the bottom ends of the plug ring 105 and the rubber gasket 106 are inserted into the marine weatherproof hatch 2. At this time, the top plate of the rubber gasket 106 is clamped between the top surfaces of the marine weatherproof hatch cover body 1 and the marine weatherproof hatch 2 to achieve a seal. The bottom end of the rubber gasket 106 is inserted between the plug ring 105 and the marine weatherproof hatch 2 to ensure the seal of the marine weatherproof hatch 2 at the slot. The bottom end of the plug ring 105 overlaps with the sealing rubber gasket 701 on the top of the bracket 7 base plate to further ensure the sealing effect after the marine weatherproof hatch cover body 1 is covered on the marine weatherproof hatch 2, thus forming a multi-seal structure. The reason for opening the through hole 702 on the base plate of the bracket 7 is to prevent water from accumulating on the bracket 7 after the marine weatherproof hatch cover body 1 is opened and external liquid falls on the bracket 7. The collected liquid is drained through the through hole 702.

[0035] To achieve buffering when the marine weatherproof hatch cover body 1 is closed on top of the marine weatherproof hatch 2, and to ensure anti-accidental opening limit after the marine weatherproof hatch cover body 1 is closed on the marine weatherproof hatch 2, the following is proposed:

[0036] Both sides of the marine weatherproof hatch cover body 1 are fixed with wing plates 4, and a handle 402 is fixed to the top surface of the wing plate 4. Both sides of the marine weatherproof hatch 2 are fixed with support plates 3, and a rubber buffer pad 301 is fixed to the top surface of the support plate 3. A wing plate 4 is fixed to the side of the support plate 3 away from the marine weatherproof hatch 2. An insert block 5 is inserted into the surface of the wing plate 4, and one end of the insert block 5 is inserted into the surface of the wing plate 4. A handle 6 is inserted into the top of the baffle 302, and the bottom end of the handle 6 is inserted into the surface of the insert block 5. A connecting block 502 is fixed to one end of the insert block 5, and an elastic traction plate is fixed to one end of the connecting block 502. 503, the elastic traction plate 503 pushes the insert 6 downward; the support plate 3 and the rubber buffer pad 301 are both arc-shaped plate structures. After the marine weatherproof hatch cover body 1 overlaps the top of the marine weatherproof hatch 2, the wing plate 4 is inserted between the baffle 302 and the marine weatherproof hatch 2, and the wing plate 4 presses on the rubber buffer pad 301. The surface of the baffle 302 has a second insertion slot 305, and the surface of the wing plate 4 has a third insertion slot 401. The insert block 5 passes through the second insertion slot 305 and is inserted into the third insertion slot 401. The insert block 5 limits the wing plate 4 between the baffle 302 and the marine weatherproof hatch 2; the baffle 302... The top surface of the insert 2 has a reserved groove 303, and the bottom surface of the reserved groove 303 has an insertion port 304. The top surface of the insert 5 has a positioning groove 501. The height of the insert handle 6 is greater than the depth of the insertion port 304. The insert handle 6 passes through the insertion port 304 and is inserted into the positioning groove 501. The insert handle 6 has a bevel on one side of its top end, and the bottom end of the insert handle 6 has a side groove 601. The side groove 601 has a U-shaped plate structure. An elastic rubber band 602 is fixed to the surface of the side groove 601. The two ends of the elastic rubber band 602 are respectively fixed to two parallel side walls of the insertion port 304. After the push handle 6 is inserted into the positioning groove 501, the handle 6 stretches downward to produce elastic deformation of the elastic rubber band 602; the connecting block 502 has an "L" shaped plate structure, and the top plate of the connecting block 502 is inserted into the reserved groove 303. The elastic traction plate 503 has a locking strip 504 fixed at one end away from the connecting block 502. The locking strip 504 is a right-angled trapezoidal strip. The locking strip 504 blocks the side of the baffle 302 facing away from the connecting block 502. A pull ring 505 is fixed on the top surface of one end of the elastic traction plate 503, and an elastic support plate 506 is fixed between the top surface of the elastic traction plate 503 and the connecting block 502.

[0037] When the marine weatherproof hatch cover body 1 is closed on top of the marine weatherproof hatch 2, the bottom end of the wing plate 4 is inserted between the baffle 302 and the marine weatherproof hatch 2. The wing plate 4 rests on the rubber buffer pad 301 to achieve a buffering effect. At this time, the insert block 5 is inserted through the second insert 305 into the third insert 401. It should be noted that when pushing the insert block 5, the pull ring 505 is squeezed to stretch the elastic traction plate 503 until the connecting block 502 is against one side of the baffle 302. Then, the elastic traction plate 503 is released, and the elastic traction plate 503 presses down to insert the handle 6 into the positioning groove 501 to prevent the insert block 5 from falling out. The retaining strip 504 is blocked on one side of the baffle 302. The elastic traction plate 503 pulls the connecting block 502 tightly against the baffle 302. On one side of the baffle 302, the insert 5 is further ensured to be stably inserted into the socket 401, preventing the marine weathertight hatch cover 1 from being shaken open on the marine weathertight hatch 2. In this way, the connection between the marine weathertight hatch cover 1 and the marine weathertight hatch 2 is achieved by the insert 5 in conjunction with the wing plate 4, without the need to install the limit pin 202. When opening the marine weathertight hatch cover 1, simply squeeze the pull ring 505 to stretch the elastic traction plate 503 to deform. At this time, the elastic rubber band 602 rebounds and pulls the insert handle 6 upward. After the bottom end of the insert handle 6 is disengaged from the positioning groove 501, the traction connecting block 502 pulls the insert 5 away from the socket 401, removes the limit between the wing plate 4 and the baffle 302, and pulls the marine weathertight hatch cover 1 upward to open.

[0038] Instructions for use of marine weathertight hatch covers with buffer opening and closing mechanisms:

[0039] Squeeze the pull ring 505 to stretch the elastic traction plate 503, causing it to deform. At this time, the elastic rubber band 602 rebounds, pulling the insert 6 upwards, and the bottom end of the insert 6 disengages from the positioning groove 501 on the surface of the insert block 5. Continue to pull the connecting block 502, pulling the insert 5 out of the insertion port 401 on the surface of the wing plate 4 and the insertion port 305 on the surface of the baffle 302, thus removing the limiting position between the wing plate 4 and the baffle 302. Pull the limiting pin 202 out of the round hole on the surface of the connecting plate 104 and the connecting plate 201. Pull the marine weathertight hatch cover body 1, causing it to rotate around the limiting shaft 102 as the central axis, thus opening the marine weathertight hatch cover body 1.

[0040] Closing Method: Place the marine weatherproof hatch cover body 1 on top of the marine weatherproof hatch 2, aligning the circular holes on the surfaces of connecting plate 104 and connecting plate 201. At this time, the bottom ends of the plug ring 105 and the rubber gasket 106 are inserted into the marine weatherproof hatch 2. The top plate of the rubber gasket 106 is clamped between the marine weatherproof hatch cover body 1 and the top surface of the marine weatherproof hatch 2 to achieve a seal, while the bottom end of the rubber gasket 106 is inserted between the plug ring 105 and the marine weatherproof hatch 2, ensuring a seal at the opening of the marine weatherproof hatch 2. Furthermore, the bottom end of the plug ring 105 overlaps with the sealing rubber gasket 701 on the top of the bracket 7 base plate, further ensuring the sealing effect and forming a multi-layer sealing structure. Simultaneously, the bottom end of the wing plate 4 is inserted between the baffle 302 and the marine weatherproof hatch 2, and the wing plate 4 rests on the rubber buffer pad 301 to achieve a cushioning effect. Push the insert block 5, squeeze the pull ring 505 to stretch the elastic traction plate 503 to deform, and insert the insert block 5 through the second insertion port 305 on the surface of the baffle 302 and into the third insertion port 401 on the surface of the wing plate 4. After the connecting block 502 is against one side of the baffle 302, release the elastic traction plate 503. The elastic traction plate 503 presses the insert handle 6 downward, so that the insert handle 6 passes through the first insertion port 304 on the bottom surface of the pre-reserved groove 303 on the top surface of the baffle 302 and is inserted into the positioning groove 501 on the top surface of the insert block 5, preventing the insert block 5 from falling off. At this time, the retaining strip 504 blocks the side of the baffle 302 away from the connecting block 502. The elastic traction plate 503 pulls the connecting block 502 tightly against one side of the baffle 302, further ensuring that the insert block 5 is stably inserted into the third insertion port 401, preventing the marine weathertight hatch cover body 1 from being shaken open on the marine weathertight hatch 2. If necessary, the limit pin 202 can be inserted into the round hole on the surface of connecting plate 104 and connecting plate 201 to provide double limit protection.

[0041] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A marine weatherproof hatch cover with a buffer opening and closing mechanism, comprising a marine weatherproof hatch cover body (1), wherein the marine weatherproof hatch cover body (1) is hinged to the top of a marine weatherproof hatch (2), characterized in that: Both sides of the marine weatherproof hatch cover body (1) are fixed with wing plates (4), and a handle (402) is fixed on the top surface of the wing plate (4). Both sides of the marine weatherproof hatch (2) are fixed with support plates (3), and a rubber buffer pad (301) is fixed on the top surface of the support plate (3). The support plate (3) has a wing plate (4) fixed on the side away from the marine weatherproof hatch (2). A plug (5) is inserted into the surface of the wing plate (4), and one end of the plug (5) is inserted into the surface of the wing plate (4). A handle (6) is inserted into the top of the baffle (302), and the bottom end of the handle (6) is inserted into the surface of the plug (5). A connecting block (502) is fixed to one end of the plug (5), and an elastic traction plate (503) is fixed to one end of the connecting block (502). The elastic traction plate (503) pushes the handle (6) downward. A plug ring (105) and a rubber pad (106) are fixed at the bottom of the marine weatherproof hatch cover body (1). One end of the rubber pad (106) is clamped between the marine weatherproof hatch (2) and the marine weatherproof hatch cover body (1). The bottom end of the rubber pad (106) is inserted between the plug ring (105) and the marine weatherproof hatch (2). A bracket (7) is fixed on the inner wall of the marine weatherproof hatch (2). The plug ring (105) is pressed on the bottom plate of the bracket (7).

2. A marine weatherproof hatch cover with a buffer opening and closing mechanism according to claim 1, characterized in that: Two notches (101) are provided on one side of the marine weatherproof hatch body (1). Two connecting handles (103) are fixed on the top surface of the marine weatherproof hatch (2). The connecting handles (103) are inserted into the notches (101). The surface of the connecting handles (103) is provided with insertion holes. Limiting shafts (102) are inserted into the insertion holes. The limiting shafts (102) are fixed on two parallel side walls of the notches (101).

3. A marine weatherproof hatch cover with a buffer opening and closing mechanism according to claim 1, characterized in that: The front end of the marine weatherproof hatch cover body (1) is fixed with a connecting plate one (104), and the front end of the marine weatherproof hatch (2) is fixed with a connecting plate two (201). Both the surface of the connecting plate two (201) and the surface of the connecting plate one (104) are provided with round holes. After the marine weatherproof hatch cover body (1) is placed on top of the marine weatherproof hatch (2), the round holes on the surfaces of the connecting plate one (104) and the connecting plate two (201) correspond to each other, and the same limiting pin (202) is inserted into the two round holes.

4. A marine weatherproof hatch cover with a buffer opening and closing mechanism according to claim 1, characterized in that: The outer ring size of the plug ring (105) is smaller than the slot size of the marine weathertight hatch (2). The bracket (7) is an annular plate with an "L" shaped end face. Multiple through holes (702) are provided on the bottom plate of the bracket (7). A sealing rubber pad (701) is fixed on the top surface of the bottom plate of the bracket (7). The sealing rubber pad (701) is held between the plug ring (105) and the bracket (7) and undergoes elastic deformation.

5. A marine weatherproof hatch cover with a buffer opening and closing mechanism according to claim 1, characterized in that: The tray (3) and the rubber buffer pad (301) are both arc-shaped plate structures. After the marine weatherproof hatch cover body (1) overlaps the top of the marine weatherproof hatch (2), the wing plate (4) is inserted between the baffle (302) and the marine weatherproof hatch (2), and the wing plate (4) presses on the rubber buffer pad (301). The surface of the baffle (302) is provided with a second insertion slot (305), and the surface of the wing plate (4) is provided with a third insertion slot (401). The insert (5) passes through the second insertion slot (305) and is inserted into the third insertion slot (401). The insert (5) limits the wing plate (4) between the baffle (302) and the marine weatherproof hatch (2).

6. A marine weatherproof hatch cover with a buffer opening and closing mechanism according to claim 1, characterized in that: The top surface of the baffle (302) is provided with a reserved groove (303), the bottom surface of the reserved groove (303) is provided with an insertion port (304), the top surface of the plug (5) is provided with a positioning groove (501), the height of the plug handle (6) is greater than the depth of the insertion port (304), and the plug handle (6) passes through the insertion port (304) and is inserted into the positioning groove (501).

7. A marine weatherproof hatch cover with a buffer opening and closing mechanism according to claim 6, characterized in that: The insertion handle (6) has a bevel on one side of the top end, and a side groove (601) is opened at the bottom end of the insertion handle (6). The side groove (601) has a U-shaped plate structure. An elastic rubber band (602) is fixed on the surface of the side groove (601). The two ends of the elastic rubber band (602) are respectively fixed on two parallel side walls of the insertion port (304). After the elastic traction plate (503) pushes the insertion handle (6) into the positioning groove (501), the insertion handle (6) stretches the elastic rubber band (602) downward to produce elastic deformation.

8. A marine weatherproof hatch cover with a buffer opening and closing mechanism according to claim 6, characterized in that: The connecting block (502) has an "L" shaped plate structure. The top plate of the connecting block (502) is inserted into the reserved groove (303). The elastic traction plate (503) has a retaining strip (504) fixed at one end away from the connecting block (502). The retaining strip (504) is a right-angled trapezoidal strip. The retaining strip (504) blocks the side of the baffle (302) facing away from the connecting block (502). The elastic traction plate (503) has a pull ring (505) fixed on the top surface at one end. An elastic support plate (506) is fixed between the top surface of the elastic traction plate (503) and the connecting block (502).

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