Upturning cabin door opening and closing mechanism

Abstract

The invention relates to the technical field of bullet train cabin doors, and provides an upturning type cabin door opening and closing mechanism which comprises a cabin body. The cabin door is arranged in the cabin opening, and when the cabin door is closed, the cabin door is tightly attached to the surface of the inner wall of the cabin body, and the cabin door and the cabin body are combined in a flush mode. The cabin door can be effectively opened through the upturning mechanism under the condition that the space condition of the cabin body is limited, a larger opening range is provided, and connection and overhaul operation are facilitated; the emergency situation of faults or power failure is handled through the hand turning assembly, an operator can directly conduct manual operation to relieve the locking state of the cabin door, and therefore it is guaranteed that the cabin door can be smoothly opened, and reliability and safety under the emergency situation are guaranteed; close combination between the cabin door and the cabin opening can be guaranteed, air leakage, turbulent flow and irregular airflow are avoided, and therefore air resistance is effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of motor vehicle cabin doors, and in particular to an upward-flipping cabin door opening and closing mechanism. Background Art

[0002] The existing cabin has a left and right double-door design, which requires a large space when opened. When the two doors are opened, they need to occupy a relatively wide space, which will limit the available space of the EMU. Especially when the EMU is being repaired or other operations need to be performed close to the EMU, the opening method of the double doors will interfere with the operation. Therefore, a flip-up cabin door opening and closing mechanism is required. Summary of the invention

[0003] In order to address the deficiencies in the prior art, the present invention provides an upward-flipping cabin door opening and closing mechanism, which solves the technical problem in the above-mentioned background technology that the cabin door's left and right double-door design occupies a large space, limits the available space of the EMU, and interferes with operations especially during maintenance.

[0004] The technical solution of the present invention is as follows: a flip-up door opening and closing mechanism, comprising

[0005] A cabin having a hatch opening therein;

[0006] A hatch, which is arranged inside the hatch and is closely attached to the inner wall surface of the cabin body and forms a flush connection therewith when the hatch is closed;

[0007] An upward flipping mechanism, which is arranged inside the cabin and is used to drive the cabin door to flip upward to maximize its opening range when the cabin space is limited;

[0008] The flipping mechanism comprises two flipping rods and two linkage rods symmetrically hinged on both sides of the cabin door, wherein one end of the two linkage rods adjacent to the flipping rods is hinged to the inner wall of the cabin body, and a power assembly for providing a flipping force for the two flipping rods is arranged inside the cabin body;

[0009] A hand-turn assembly is arranged at a side of the cabin body away from the power assembly, and is used to replace the power assembly to manually turn over the two upward turning rods to open the cabin door when power is off.

[0010] Preferably, the power assembly includes a cylinder fixed inside the cabin, a connecting rod is fixed to the telescopic end of the cylinder, an automatic rack is provided at the bottom end of the connecting rod, a clamping assembly is provided inside the connecting rod, the automatic rack is fixed to the connecting rod via the clamping assembly, the automatic rack is meshed with an automatic gear, an automatic rotating shaft is fixedly connected to the inner wall of the automatic gear, and the automatic rotating shaft is fixed to the top end of one of the flip-up rods.

[0011] Preferably, the locking assembly includes a rectangular groove formed on the outer wall of the connecting rod, an electromagnet 1 and a return spring are sleeved inside the rectangular groove, two ends of the return spring are respectively fixed to the electromagnet 1 and the rectangular groove, a connecting groove matched with the connecting rod is formed on the top of the automatic rack, a locking groove matched with the electromagnet 1 is formed on the inner wall of the connecting groove, a magnet 1 is fixed on the side of the inner wall of the locking groove opposite to the electromagnet 1, and the electromagnet 1 is attracted to the magnet 1 and stretches the return spring when power is supplied.

[0012] Preferably, the hand-flip assembly includes a manual rotating shaft arranged on one side of the top end of the other flip rod, a switching assembly is arranged inside the manual rotating shaft, the other flip rod is fixed and detachable to the manual rotating shaft through the switching assembly, a manual gear is fixed to the outer wall of the manual rotating shaft, the manual gear is meshed with a manual rack, and a lever assembly for providing flipping force to the two flip rods when power is off is arranged on the side of the cabin body away from the power assembly.

[0013] Preferably, the switching assembly includes a rotating groove formed on one side of the top end of the other flip-up rod and adapted to the manual rotating shaft, a fixed groove is formed on the inner wall of the rotating groove, a groove is formed on one end of the manual rotating shaft adjacent to the rotating groove, a switching plate adapted to the fixed groove is arranged inside the groove, a partition is fixed on the inner wall of the groove, a sliding rod is fixed on the side of the switching plate, a push-pull spring is sleeved on the outer wall of the sliding rod, two ends of the push-pull spring are respectively fixed to the partition and the sliding rod, an electromagnet 2 is fixed inside the groove, a magnet 2 is provided on the side of the electromagnet 2, one end of the sliding rod passes through the inner wall of the partition and is fixed to the magnet 2, and when the electromagnet 2 is energized, it is attracted to the magnet 2 and pulls the switching plate out of the fixed groove.

[0014] Preferably, the lever assembly includes a rotary plate arranged inside the cabin, a cross groove is opened on one side of the rotary plate, and a transmission assembly is arranged inside the cabin. The rotary plate rotates with lever force reduction through the transmission assembly, and the two flip-up rods synchronously drive the cabin door to flip up.

[0015] Preferably, the transmission assembly includes a worm fixed to the inner wall of the rotating plate, the worm meshing with a worm wheel, a transmission shaft fixed to the inner wall of the worm wheel, a driving wheel fixed to the outer wall of the transmission shaft, the driving wheel meshing with a driven wheel, a screw rod fixed to the inner wall of the driven wheel, the outer wall of the screw rod is threadedly connected with a resist cylinder, and the bottom end of the resist cylinder contacts the top of the manual rack.

[0016] Preferably, a sealing ring is fixed to the outer wall of the hatch to form a tight fit with the inner wall of the hatch.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention can effectively open the cabin door through the flip-up mechanism when the cabin space conditions are limited, providing a larger opening range and facilitating connection and maintenance operations.

[0019] 2. The present invention uses a hand-flip assembly to deal with emergency situations such as failures or power outages, so that the operator can directly perform manual operation to release the locked state of the cabin door, thereby ensuring that the cabin door can be opened smoothly and ensuring reliability and safety in emergency situations.

[0020] 3. The present invention can ensure the close connection between the door and the hatch, avoid air leakage, turbulence and irregular airflow, and thus effectively reduce air resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] Figure 1 It is a schematic diagram of the plane structure proposed by the present invention;

[0023] Figure 2 A schematic diagram of the three-dimensional structure proposed by the present invention;

[0024] Figure 3 A schematic diagram of a partially separated and enlarged structure of the present invention;

[0025] Figure 4 The present invention proposes Figure 2 Rear view structure diagram;

[0026] Figure 5 It is a partial cross-sectional view and an enlarged structural schematic diagram of the second embodiment of the present invention;

[0027] Figure 6 The third structural schematic diagram proposed by the present invention.

[0028] In the figure:

[0029] 1. Hatch door;

[0030] 2. Upturning mechanism; 21. Upturning rod; 22. Linking rod; 23. Power assembly; 231. Cylinder; 232. Connecting rod; 233. Automatic rack; 234. Automatic gear; 235. Automatic rotating shaft; 24. Clamping assembly; 241. Electromagnet 1; 242. Retracting spring; 243. Clamping slot; 244. Magnet 1;

[0031] 3. Hand-turn assembly; 31. Switch assembly; 311. Rotating groove; 312. Fixed groove; 313. Switching plate; 314. Partition plate; 315. Sliding rod; 316. Push-pull spring; 317. Magnet 2; 318. Electromagnet 2; 32. Lever assembly; 321. Rotating plate; 322. Cross groove; 323. Worm; 324. Worm wheel; 325. Transmission shaft; 326. Driving wheel; 327. Driven wheel; 328. Screw rod; 329. Retaining cylinder; 33. Manual rotating shaft; 34. Manual gear; 35. Manual rack;

[0032] 4. Sealing ring. DETAILED DESCRIPTION

[0033] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example 1

[0035] The existing mechanical cabin has a left and right double door design, which requires a large space when opened. When the two doors are opened, they need to occupy a relatively wide space, which will limit the available space of the EMU. Especially when the EMU is being repaired or other operations need to be carried out close to the EMU, the opening method of the double doors will interfere with the operation. Figure 1-Figure 6 The present embodiment provides an upward-flipping hatch door opening and closing mechanism, including a cabin body with a hatch opening formed inside.

[0036] like Figure 4 As shown, the hatch 1 is arranged inside the hatch, and when the hatch 1 is closed, it is closely attached to the inner wall surface of the cabin body and forms a flush connection therewith. The outer wall of the hatch 1 is fixed with a sealing ring 4, which is used to form a close connection with the inner wall of the hatch to reduce air resistance. The sealing ring 4 ensures that the contact surface between the hatch 1 and the hatch is tight and has no gaps, thereby reducing the generation of turbulence and reducing the resistance of air flow. The sealing ring 4 also helps to form a continuous and smooth surface, so that the air flows more smoothly at the contact point between the hatch 1 and the hatch. The better the smoothness of the air flow, the smaller the resistance. Through the action of the sealing ring 4, the airflow can pass around the hatch 1 more evenly, reducing the phenomenon of air flow lines or resistance increase due to sudden changes.

[0037] like Figure 2-Figure 3As shown, in order to provide a larger opening space when the space is limited and to facilitate connection and maintenance operations, the following settings are made: the flipping mechanism 2 is arranged inside the cabin, and is used to drive the cabin door 1 to flip up so as to maximize its opening range when the cabin space is limited. The flipping mechanism 2 includes two flipping rods 21 and two linkage rods 22 symmetrically hinged on both sides of the cabin door 1, wherein one end of the two linkage rods 22 adjacent to the flipping rods 21 are hinged to the inner wall of the cabin, and a power assembly 23 for providing a flipping force for the two flipping rods 21 is arranged inside the cabin, and the power assembly 23 includes a cylinder 231 fixed inside the cabin, a connecting rod 232 is fixed to the telescopic end of the cylinder 231, and an automatic rack 233 is arranged at the bottom end of the connecting rod 232, a slider 1 is fixed to the side of the automatic rack 233, and a slide groove 1 for sliding the slider 1 is opened on the inner wall of the cabin. A locking assembly 24 is provided inside the connecting rod 232, and the automatic rack 233 is fixed to the connecting rod 232 through the locking assembly 24. The automatic rack 233 is meshed with an automatic gear 234, and the inner wall of the automatic gear 234 is fixedly connected with an automatic rotating shaft 235, and the automatic rotating shaft 235 is fixed to the top end of one of the flip-up rods 21. Starting the power assembly 23 causes the two flip-up rods 21 to flip upwards at a certain angle. The operation method of the power assembly 23 is to start the cylinder 231 so that the telescopic end pushes the connecting rod 232 downward. The downward movement of the connecting rod 232 causes the automatic rack 233 to move downward and engage with the automatic gear 234 to drive the automatic rotating shaft 235 to rotate. The rotation of the automatic rotating shaft 235 drives the two flip-up rods 21 to flip upwards at a certain angle to achieve the flipping action. The upward flipping of the two flip-up rods 21 can drive the hatch 1 to open the hatch, and the vertical level of the hatch 1 during the flipping process can be maintained through the setting of the two linkage rods 22. The upward flipping of the flip-up hatch 1 can avoid the space requirement for horizontal opening, so that the hatch 1 is not restricted by physical obstacles when opening, and can be operated and maintained more conveniently, providing higher flexibility and convenience.

[0038] like Figure 3As shown, the clamping assembly 24 includes a rectangular groove provided on the outer wall of the connecting rod 232, an electromagnet 1 241 and a pull-back spring 242 are sleeved inside the rectangular groove, a slider 2 is fixed on the side of the electromagnet 1 241, and a slide groove 2 is provided on the inner wall of the rectangular groove for the slider 2 to slide. The two ends of the pull-back spring 242 are respectively fixed to the electromagnet 1 241 and the rectangular groove, a connecting groove adapted to the connecting rod 232 is provided on the top of the automatic rack 233, a clamping groove 243 adapted to the electromagnet 1 241 is provided on the inner wall of the connecting groove, and a magnet 1 243 is fixed on the side of the inner wall of the clamping groove 243 opposite to the electromagnet 1 241, and the electromagnet 1 241 is attracted to the magnet 1 243 and stretches the pull-back spring 242 when it is energized. Under normal working conditions, after the electromagnet 1 241 is energized, the magnetic force generated makes it attract the magnet 1 244, so that the electromagnet 1 241 is firmly clamped into the clamping groove 243. In this state, a fixed relationship is formed between the connecting rod 232 and the automatic rack 233. When the telescopic end of the cylinder 231 drives the connecting rod 232 to move up and down, the automatic rack 233 can move up and down synchronously with the connecting rod 232, thereby driving the cabin door 1 to complete the opening and closing action. However, when a fault occurs or the power is cut off, the electromagnet 1 241 loses the power-on state, and after losing the magnetic force, the electromagnet 1 241 is pulled back into the rectangular groove by the action of the pull-back spring 242. In this case, the connecting rod 232 and the automatic rack 233 only maintain a contact relationship, and the original fixed connection is lost. In order to cope with this fault situation, the hand-turning assembly 3 is designed to intervene in the operation, and the flip rod 21 can be turned over manually to achieve the opening of the cabin door 1. Therefore, even in the absence of power support, the cabin door 1 can still be opened smoothly by manual operation to ensure reliability and safety in emergency situations.

[0039] Example 2

[0040] Based on Example 1, Figure 4-Figure 6 As shown, the hand-turn assembly 3 is arranged at a side of the cabin body away from the power assembly 23, and is used to replace the power assembly 23 to manually turn over the two upward turning rods 21 to open the cabin door 1 when the power is off.

[0041] like Figure 4-Figure 5As shown, the hand-turning assembly 3 includes a manual rotating shaft 33 arranged on one side of the top of another flip-up rod 21, a manual gear 34 is fixed to the outer wall of the manual rotating shaft 33, a manual rack 35 is meshed with the manual gear 34, a slider 3 is fixed to the side of the manual rack 35, a slide groove 3 is provided on the inner wall of the cabin body for the slider 3 to slide, a switching assembly 31 is provided inside the manual rotating shaft 33, the switching assembly 31 includes a rotating groove 311 provided on one side of the top of another flip-up rod 21 and adapted to the manual rotating shaft 33, a fixed groove 312 is provided on the inner wall of the rotating groove 311, a groove is provided at one end of the manual rotating shaft 33 adjacent to the rotating groove 311, and a groove is provided inside the groove to adapt to the fixed groove 312 The switch plate 313 is fixed with a partition 314 on the inner wall of the groove, a slide bar 315 is fixed on the side of the switch plate 313, a push-pull spring 316 is sleeved on the outer wall of the slide bar 315, and the two ends of the push-pull spring 316 are respectively fixed to the partition 314 and the slide bar 315, an electromagnet 2 318 is fixed inside the groove, a magnet 2 317 is arranged on the side of the electromagnet 2 318, one end of the slide bar 315 passes through the inner wall of the partition 314 and is fixed to the magnet 2 317, and when the electromagnet 2 318 is energized, it attracts the magnet 2 317 and pulls the switch plate 313 out of the fixed groove 312, and the other flip-up rod 21 is fixed and separable between the switch assembly 31 and the manual shaft 33. A lever assembly 32 for providing flipping force for the two flip-up rods 21 when the power is off is arranged on the side of the cabin body away from the power assembly 23, and the lever assembly 32 includes a rotary plate 321 arranged inside the cabin body, and a cross slot 322 is opened on one side of the rotary plate 321. Under normal working conditions, after the second electromagnet 318 is energized, the magnetic force generated causes it to attract the second magnet 317, thereby driving the slide bar 315 to move, so that the switching plate 313 is away from the fixed groove 312. In this state, the other flip-up rod 21 and the manual rotating shaft 33 maintain a rotational relationship. When the power assembly 23 drives one flip rod 21 to rotate, the other flip rod 21 will also rotate synchronously to complete the opening and closing action of the hatch 1; when a fault occurs or the power is cut off, the electromagnet 2 318 loses power supply and is powered off synchronously, and the magnet 2 317 is moved away from the electromagnet 2 318 under the action of the push-pull spring 316, and at the same time, the slide bar 315 drives the switching plate 313 to insert into the fixed groove 312 to form a fixed relationship. In this case, the other flip rod 21 and the manual rotating shaft 33 no longer maintain a rotational relationship, but are transformed into a fixed connection. At this time, a specific tool is inserted into the cross groove 322 on the side of the rotating plate 321 and rotated, which can drive the transmission assembly to operate, thereby driving the two flip rods 21 to rotate synchronously, and finally realizing the opening of the hatch 1, ensuring that the hatch 1 can still be manually opened even in the event of a power outage or fault, thereby ensuring safe operation in an emergency.

[0042] like Figure 6As shown, a transmission assembly is arranged inside the cabin, and the rotating plate 321 rotates with lever force reduction through the transmission assembly, and the two flip-up rods 21 synchronously drive the cabin door 1 to flip up, and the transmission assembly includes a worm 323 fixed to the inner wall of the rotating plate 321, the worm 323 is meshed with a worm wheel 324, a transmission shaft 325 is fixed to the inner wall of the worm wheel 324, a driving wheel 326 is fixed to the outer wall of the transmission shaft 325, a driven wheel 327 is meshed with the driving wheel 326, a screw rod 328 is fixed to the inner wall of the driven wheel 327, a push rod 329 is threadedly connected to the outer wall of the screw rod 328, a slider 4 is fixed to the outer wall of the push rod 329, and a slide groove 4 for the slider 4 to slide is provided on the inner wall of the cabin. The bottom end of the push rod 329 contacts the top of the manual rack 35. By inserting a specific tool into the cross slot 322 on the side of the rotary plate 321 and rotating it, the rotary plate 321 drives the worm 323 to rotate, the worm 323 meshes with the worm wheel 324, and then drives the transmission shaft 325 to rotate. After the transmission shaft 325 rotates, it drives the driving wheel 326 to rotate, and the driving wheel 326 meshes with the driven wheel 327, thereby driving the screw 328 to rotate. Since the diameter of the driving wheel 326 is smaller than that of the driven wheel 327, this difference forms a lever effect, which helps to reduce the force required to rotate the rotary plate 321, because the driving wheel 326 with a small diameter can generate a smaller torque when rotating than the driven wheel 327 with a large diameter. Specifically, the torque is proportional to the radius. When the radius of the driving wheel 326 is small, the force it needs to apply is relatively small, because at the same rotation angle, the smaller wheel requires less rotational force, and the transmission of force can be amplified by the larger driven wheel 327. The rotation of the screw rod 328 causes the cylinder 329 to move downward along the thread of its outer wall, pushing the manual rack 35 downward to engage with the manual gear 34. The rotation of the manual gear 34 then drives the manual shaft 33 to rotate, thereby flipping the flip rod 21 to open the hatch 1, ensuring that the hatch 1 can still be opened smoothly by manual operation even in the case of power or security failure.

[0043] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A flip-up door opening and closing mechanism, characterized in that: include A cabin having a hatch opening therein; A hatch (1), the hatch (1) being arranged inside the hatch and being closely attached to the inner wall surface of the cabin body and forming a flush connection therewith when the hatch (1) is closed; An upward flipping mechanism (2), the upward flipping mechanism (2) being arranged inside the cabin body and used for driving the cabin door (1) to flip upward so as to maximize its opening range when the cabin body space is limited; The flipping mechanism (2) comprises two flipping rods (21) and two linkage rods (22) symmetrically hinged on both sides of the cabin door (1), wherein one end of the two linkage rods (22) adjacent to the flipping rods (21) is hinged to the inner wall of the cabin body, and a power assembly (23) for providing a flipping force for the two flipping rods (21) is arranged inside the cabin body; A hand-turn assembly (3) is arranged on a side of the cabin body away from the power assembly (23) and is used to replace the power assembly (23) to manually turn over the two upward turning rods (21) to open the cabin door (1) when power is off.

2. The flip-up door opening and closing mechanism according to claim 1, characterized in that: The power assembly (23) comprises a cylinder (231) fixed inside the cabin, a connecting rod (232) is fixed to the telescopic end of the cylinder (231), an automatic rack (233) is arranged at the bottom end of the connecting rod (232), a clamping assembly (24) is arranged inside the connecting rod (232), the automatic rack (233) is fixed to the connecting rod (232) through the clamping assembly (24), the automatic rack (233) is meshed with an automatic gear (234), the inner wall of the automatic gear (234) is fixedly connected with an automatic rotating shaft (235), and the automatic rotating shaft (235) is fixed to the top end of one of the flip-up rods (21).

3. The flip-up door opening and closing mechanism according to claim 2, characterized in that: The engaging assembly (24) comprises a rectangular groove formed on the outer wall of the connecting rod (232), an electromagnet (241) and a pull-back spring (242) are sleeved inside the rectangular groove, two ends of the pull-back spring (242) are respectively fixed to the electromagnet (241) and the rectangular groove, a connecting groove matched with the connecting rod (232) is formed on the top of the automatic rack (233), a clamping groove (243) matched with the electromagnet (241) is formed on the inner wall of the connecting groove, a magnet (244) is fixed on the side of the inner wall of the clamping groove (243) opposite to the electromagnet (241), and the electromagnet (241) is attracted to the magnet (244) and pulls the pull-back spring (242) when power is supplied.

4. The flip-up door opening and closing mechanism according to claim 1, characterized in that: The hand-turning assembly (3) comprises a manual rotating shaft (33) arranged on one side of the top end of the other flip-up rod (21); a switching assembly (31) is arranged inside the manual rotating shaft (33); the other flip-up rod (21) is fixed and detachable to the manual rotating shaft (33) via the switching assembly (31); a manual gear (34) is fixed to the outer wall of the manual rotating shaft (33); the manual gear (34) is meshed with a manual rack (35); and a lever assembly (32) for providing a flipping force for the two flip-up rods (21) when power is off is arranged on a side of the cabin body away from the power assembly (23).

5. The flip-up door opening and closing mechanism according to claim 4, characterized in that: The switching assembly (31) comprises a rotation groove (311) provided on one side of the top end of the other flip-up rod (21) and adapted to the manual rotation shaft (33); a fixed groove (312) is provided on the inner wall of the rotation groove (311); a groove is provided on one end of the manual rotation shaft (33) adjacent to the rotation groove (311); a switching plate (313) adapted to the fixed groove (312) is provided inside the groove; a partition plate (314) is fixed on the inner wall of the groove; a sliding rod (315) is fixed on the side of the switching plate (313); and the sliding rod (315) is fixed to the side of the switching plate (313); and the sliding rod (315) is fixed to the side of the switching plate (313). The outer wall of the groove (315) is provided with a push-pull spring (316), the two ends of which are respectively fixed to the partition (314) and the slide bar (315), the interior of the groove is fixed with an electromagnet (318), the side of the electromagnet (318) is provided with a magnet (317), one end of the slide bar (315) passes through the inner wall of the partition (314) and is fixed to the magnet (317), and when the electromagnet (318) is energized, it attracts the magnet (317) and pulls the switching plate (313) to move out of the fixed groove (312).

6. The flip-up door opening and closing mechanism according to claim 4, characterized in that: The lever assembly (32) comprises a rotary plate (321) arranged inside the cabin body, a cross groove (322) is provided on one side of the rotary plate (321), a transmission assembly is arranged inside the cabin body, the rotary plate (321) performs lever force reduction rotation through the transmission assembly, and enables the two flip-up rods (21) to synchronously drive the cabin door (1) to flip up.

7. The flip-up door opening and closing mechanism according to claim 6, characterized in that: The transmission assembly comprises a worm (323) fixed to the inner wall of a rotary plate (321), the worm (323) meshing with a worm wheel (324), a transmission shaft (325) fixed to the inner wall of the worm wheel (324), a driving wheel (326) fixed to the outer wall of the transmission shaft (325), the driving wheel (326) meshing with a driven wheel (327), a lead screw (328) fixed to the inner wall of the driven wheel (327), the outer wall of the lead screw (328) being threadedly connected with a push tube (329), the bottom end of the push tube (329) being in contact with the top of the manual rack (35).

8. The flip-up door opening and closing mechanism according to claim 1, characterized in that: A sealing ring (4) is fixed to the outer wall of the hatch (1) and is tightly combined with the inner wall of the hatch.

Images