An electric door opening mechanism

Abstract

The application relates to the field of subway door leaf opening mechanisms, in particular to an electric door opening mechanism, wherein the electric door opening mechanism comprises a frame body assembly, a top rod, a rotating shaft, a pushing assembly, a manual rod and an emergency ejection mechanism; one end of the pushing assembly is hinged to the base, the other end is hinged to the middle section of the top rod; one end of the manual rod is matched with two ratchets, the other end extends in a direction away from the top rod by a predetermined distance; the emergency ejection mechanism comprises a first driving part and a first telescopic rod, the first driving part is fixed on the first mounting plate and faces the top rod, the first telescopic rod is connected with the first driving part, and the first driving part is arranged to drive the first telescopic rod to extend or retract by a predetermined length. The application can realize the advantages of internal extrusion and external pulling, can detect whether a full-open door leaf is stuck, and can improve the probability of opening the full-open door leaf in a critical situation by effectively utilizing the structural configuration.

Description

Technical Field

[0001] This application relates to the field of subway door opening mechanisms, and more specifically to an electric door opening mechanism. Background Technology

[0002] Fully automated driving vehicles, as a mainstream product widely used in the current market, are booming in major and medium-sized cities. Rail transit products, especially urban rail vehicles, offer numerous advantages over traditional urban land transportation methods, including safety, comfort, punctuality, speed, environmental friendliness, large capacity, high efficiency, and no need to occupy ground space. Type A subway cars, widely used in urban rail transit due to their maximum width and passenger capacity, are applied to operating lines in major cities. However, with the promotion and development of urban rail vehicles, frequent safety accidents have highlighted the importance of research into safe evacuation procedures. Current evacuation methods typically involve opening the fully open doors of the subway car. Therefore, how to open these doors is crucial for evacuation. The current method of opening the doors by squeezing them from the inside is insufficient if the doors become jammed. Therefore, designing an opening mechanism that allows for both inward squeezing and outward pulling is essential.

[0003] Therefore, there is a need for an electric door opening mechanism that can detect whether a fully open door is stuck by internal squeezing and external pulling, and can increase the probability of opening the fully open door in emergency situations. Summary of the Invention

[0004] The main purpose of this application is to provide an electric door opening mechanism, wherein the electric door opening mechanism can effectively utilize its own structural configuration to achieve the advantages of inward squeezing and outward pulling, and can increase the probability of opening a fully open door in emergency situations.

[0005] Another objective of this application is to provide an electric door opening mechanism, wherein the electric door opening mechanism includes a pushing component and a pulling device, the pushing device being configured to compress a fully open door leaf from the inside, and the pulling device being configured to pull the fully open door leaf from the outside, thereby increasing the probability of opening the fully open door leaf in a crisis situation by squeezing from the inside and pulling from the outside.

[0006] Another objective of this application is to provide an electric door opening mechanism, wherein the electric door opening mechanism includes an emergency ejection mechanism, the emergency ejection mechanism being configured to detect whether a fully open door leaf is jammed.

[0007] Another objective of this application is to provide an electric door opening mechanism, wherein the electric door opening mechanism has a simple structure, is easy to operate, does not involve complex manufacturing processes and expensive materials, has high economic efficiency, and is easy to promote and use.

[0008] To achieve at least one of the above-mentioned objectives, this application provides an electric door opening mechanism, which is disposed on the front of a subway car. The front of the car includes a fully openable door and a sealed door frame. The fully openable door is rotatably disposed on the sealed door frame, and the electric door opening mechanism is directly opposite the fully openable door. The electric door opening mechanism includes:

[0009] A frame assembly includes a base and two opposing support plates, both of which are disposed on the base and spaced apart by a predetermined distance, and both support plates extend a predetermined length away from the base.

[0010] A push rod is provided, one end of which is located on the side where the two support plates are close to each other and near the top of the support plates, and the other end of which is in contact with the center of the inner side of the fully opening door leaf. The support plate with the sliding groove has a protrusion on the side near the push rod, and a first mounting plate is also provided on the side of the protrusion facing away from the sliding groove.

[0011] A rotating shaft has two ends that pass through the two support plates respectively, and the two ends of the rotating shaft are respectively placed on both sides of the support plates. The top rod placed between the two support plates is also fixedly connected to the rotating shaft and is located between the two ratchet wheels.

[0012] A pushing assembly, one end of which is hinged to the base and the other end of which is hinged to the middle section of the top rod;

[0013] A manual lever, one end of which engages with the two ratchet wheels, and the other end extending a predetermined distance away from the top lever; and

[0014] An emergency ejection mechanism includes a first driving component and a first telescopic rod. The first driving component is fixed on the first mounting plate and faces the ejection rod. The first telescopic rod is connected to the first driving component, and the first driving component is configured to drive the first telescopic rod to extend or retract by a predetermined length.

[0015] In one or more embodiments of this application, the electric door opening mechanism further includes a pulling device, the pulling device including a rotating component and a first sensing unit, the rotating component including a second driving component, a connecting shaft and a roller assembly, wherein a first mounting groove is provided at one end of the top rod away from the rotating shaft, the second driving component is disposed in the first mounting groove, and one end of the connecting shaft is connected to the second driving component, the other end is fixedly connected to the roller assembly, and one end of the roller assembly is in contact with the end of the top rod.

[0016] In one or more embodiments of this application, the inner side of the fully openable door leaf is further provided with a second mounting groove, the first sensing unit is placed in the second mounting groove, and a magnetic sheet is also provided on one side of the roller assembly, wherein the first sensing unit senses the magnetic sheet when the roller assembly rotates 180 degrees.

[0017] In one or more embodiments of this application, the inner side of the fully openable door leaf is further provided with two oppositely arranged third mounting slots, and both third mounting slots are located below the second mounting slot. The pulling device further includes two third driving components, and each third driving component has a second telescopic rod. The two third driving components are respectively disposed in the two third mounting slots, and the two second telescopic rods are respectively connected to the two third driving components and pass through the fully openable door leaf and are placed on the outside. The first sensing unit is also connected to the two third driving components.

[0018] In one or more embodiments of this application, the pulling device further includes two ropes, one end of each rope being fixedly connected to the ends of two second telescopic rods placed externally, and the top of the vehicle front also has two wire grooves, through which the two ropes pass and are matched with the electric door opening mechanism.

[0019] In one or more embodiments of this application, one end of the rotating shaft has an insertion hole through which the rotating shaft passes, and the pulling device further includes a first movable shaft and a second movable shaft. The side of the sealed door frame away from the fully open door leaf also has a second mounting plate. One end of the first movable shaft is rotatably connected to the second mounting plate, and the other end passes through the insertion hole and is located at the end of the rotating shaft away from the second mounting groove. The second movable shaft is threadedly connected to the end of the first movable shaft passing through the insertion hole, wherein the two ropes are respectively wound around the first movable shaft and the second movable shaft.

[0020] In one or more embodiments of this application, the first movable shaft further has two limiting grooves, and the two limiting grooves are located between the rotating shaft and the second mounting plate. The rotating shaft is also welded with two opposing third mounting plates at one end near the second mounting plate. The pulling device further includes two snap-fit ​​components, which are respectively disposed on the two third mounting plates and are configured to cooperate with the two limiting grooves respectively.

[0021] In one or more embodiments of this application, each of the snap-fit ​​components includes a fourth driving component, a third telescopic rod, and a snap-fit ​​block. The fourth driving component is fixed on the corresponding third mounting plate, and one end of the third telescopic rod is connected to the fourth driving component, and the other end is fixedly connected to the snap-fit ​​block. The two snap-fit ​​blocks are respectively facing the two limiting grooves.

[0022] In one or more embodiments of this application, a second sensing unit is further provided on one side of the fully openable door leaf, and the second sensing unit is close to the bottom of the fully openable door leaf.

[0023] In one or more embodiments of this application, the length of the second movable shaft is less than the length of the first movable shaft.

[0024] In one or more embodiments of this application,

[0025] In one or more embodiments of this application, Attached Figure Description

[0026] These and / or other aspects and advantages of this application will become clearer and more readily understood from the following detailed description of embodiments of this application taken in conjunction with the accompanying drawings, wherein:

[0027] Figure 1 The figure shows a schematic diagram of an electric door opening mechanism. Figure 1 .

[0028] Figure 2 The diagram shows a schematic representation of the front section of a rail vehicle.

[0029] Figure 3 The diagram shows Figure 1 Enlarged view of C.

[0030] Figure 4 The illustration shows a top view of an electric door opening mechanism.

[0031] Figure 5 The diagram shows Figure 4 A magnified view of D. Detailed Implementation

[0032] The terms and words used in the following specification and claims are not limited to their literal meaning, but are used solely by the inventors to enable a clear and consistent understanding of this application. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of this application is provided for illustrative purposes only and not for the purpose of limiting the application as defined in the appended claims and their equivalents.

[0033] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0034] While ordinal numbers such as "first," "second," etc., will be used to describe various components, this does not limit which components are used. The term is used only to distinguish one component from another. For example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component, without departing from the teachings of the inventive concept. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0035] The terminology used herein is for the purpose of describing various embodiments only and is not intended to be limiting. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. It will also be understood that the terms “comprising” and / or “having” as used in this specification specify the presence of the described features, numbers, steps, operations, components, elements or combinations thereof, without excluding the presence or addition of one or more other features, numbers, steps, operations, components, elements or groups thereof.

[0036] Indicative electric door opening mechanism

[0037] refer to Figures 1 to 5 According to a preferred embodiment of the present invention, the electric door opening mechanism 30 is provided in such a way as... Figure 1 The subway car front shown includes a fully openable door 10, a sealed door frame 20, and an electric door opening mechanism 30. The fully openable door 10 is rotatably mounted on the sealed door frame 20, and the electric door opening mechanism 30 faces the fully openable door 10, pushing it to a predetermined angle by pressing it. Those skilled in the art should understand that a pneumatic spring is also provided on each side of the sealed door frame 20. When the fully openable door 10 is opened to the predetermined angle by the electric door opening mechanism 30, both pneumatic springs activate, thereby pushing the fully open door 10 to the preset angle. It is worth noting that the electric door opening mechanism 30 is designed to open the fully openable door 10 electrically or manually.

[0038] Furthermore, the electric door opening mechanism 30 includes a frame assembly 31, which includes a base and two opposing support plates. Both support plates are disposed on the base and are spaced apart by a predetermined distance, and both support plates extend a predetermined length away from the base.

[0039] Furthermore, the electric door opening mechanism 30 also includes a push rod 32. One end of the push rod 32 is located on the side where the two support plates are close to each other and near the top of the support plates. The other end of the push rod 32 is in contact with the center of the inner side of the fully open door leaf 10. The push rod 32 is configured to rotate at a predetermined angle so that the end of the push rod 32 in contact with the fully open door leaf 10 presses against the fully open door leaf 10, thereby opening the fully open door leaf 10.

[0040] It should be noted that the electric door opening mechanism 30 also includes a rotating shaft 33, with both ends of the rotating shaft 33 passing through the two support plates, and the two ends of the rotating shaft 33 being positioned on opposite sides of the support plates. Two opposing ratchet wheels 34 are also provided on the rotating shaft 33, and the two ratchet wheels 34 are fixedly connected to the rotating shaft 33, preferably by welding. Thus, when the rotating shaft 33 rotates, the two ratchet wheels 34 rotate synchronously. The push rod 32, located between the two support plates, is also fixedly connected to the rotating shaft 33 and positioned between the two ratchet wheels 34.

[0041] Furthermore, the electric door opening mechanism 30 also includes a pushing component 35, one end of which is hinged to the base and the other end of which is hinged to the middle section of the top rod 32. It should be noted that the pushing component 35 can be implemented as an electric push rod, i.e., electrically driven, causing the end of the pushing component 35 connected to the top rod 32 to extend a predetermined length, thereby enabling the top rod 32 to press against the fully open door leaf 10, thus opening the fully open door leaf 10.

[0042] Additionally, the electric door opening mechanism 30 further includes a limiting component, which includes a moving rod 36. One of the support plates has a groove, which is inclined. The moving rod 36 is located above the pushing component 35, with one end hinged to the top rod 32 and the other end near the groove. The side of the moving rod 36 near the groove also has an extension 361, which is slidably placed within the groove. Those skilled in the art should understand that the extension length of the pushing component 35 can be achieved using a two-stroke switch, such as... Figure 1The A-limit switch and the B-limit switch are installed on a support plate with the slide groove. The end of the moving rod 36, away from the top rod 32, first contacts the A-limit switch. When the pushing assembly 35 extends, the extension 361 moves to the top of the slide groove, and simultaneously the end of the moving rod 36, away from the top rod 32, contacts the B-limit switch. At this time, the electric door opening mechanism 30 is fully opened. Conversely, when the pushing assembly 35 retracts, the end of the moving rod 36, away from the top rod 32, contacts the B-limit switch, and the electric door opening mechanism 30 is fully retracted. Thus, the A-limit switch and the B-limit switch indicate whether the electric door opening mechanism 30 is in the correct position.

[0043] Additionally, it should be noted that the electric door opening mechanism 30 also includes a manual lever 37. One end of the manual lever 37 engages with the two ratchet wheels 34, and the other end extends a predetermined distance away from the top rod 32. Specifically, the end of the manual lever 37 that engages with the rotating shaft 33 is also provided with a movable connector. The connector can move laterally a predetermined distance to engage with the ratchet wheels 34. Thus, when the manual lever 37 is swung downwards, the connector can squeeze the two ratchet wheels 34, thereby driving the rotating shaft 33 to rotate. Conversely, when the manual lever 37 is swung upwards, the connector will not exert force on the two ratchet wheels 34, so the rotating shaft 33 will not rotate. By manually swinging the manual lever 37 back and forth, the rotating shaft 33 will continuously rotate, causing the end of the top rod 32 away from the rotating shaft 33 to continuously rise, thereby causing the top rod 32 to push the fully open door leaf 10 upwards.

[0044] In addition, the end of the manual lever 37 opposite to the rotating shaft 33 has a retractable grip, which means that the user can pull the grip out to a predetermined length, thus saving effort by lengthening the lever arm.

[0045] It should also be noted that the support plate with the slide groove has a protrusion on the side near the top rod 32. Furthermore, the present invention also includes an emergency ejection mechanism 40. Specifically, when the electric door opening mechanism 30 fails to eject the fully open door leaf 10, the emergency ejection mechanism 40 is configured to apply force to the top rod 32 to increase the squeezing force of the top rod 32 on the fully open door leaf 10, so that the top rod 32 can eject the fully open door leaf 10. Additionally, a first mounting plate is provided on the side of the protrusion opposite to the slide groove, and the emergency ejection device is mounted on the first mounting plate, facing the top rod 32.

[0046] As shown in Figure 3, the emergency ejection mechanism 40 includes a first driving component 41 and a first telescopic rod 42. The first driving component is fixed to the first mounting plate and faces the ejector rod 32. The first telescopic rod 42 is connected to the first driving component 41, and the first driving component 41 is configured to drive the first telescopic rod 42 to extend or retract by a predetermined length. The emergency ejection mechanism 40 can be implemented as a hydraulic cylinder. When the electric door opening mechanism 30 fails to eject the fully open door leaf 10, the first driving component 41 drives the first telescopic rod 42 to extend by a predetermined length, thereby pressing the ejector rod 32. It should be noted that limit switches A and B are both connected to an external control terminal, and the first driving component 41 is also connected to the external control terminal, which is configured to control the opening and closing of the first driving component 41. The emergency ejection mechanism 40 is only configured to initially eject the fully open door 10 to verify whether the fully open door 10 is stuck. If the fully open door 10 can be ejected by the emergency ejection mechanism 40, the manual lever 37 can be manually swung, and then connected through the unidirectional rotating ratchet 34 to make the push rod 32 continuously tilt upward, thereby pushing the fully open door 10 to a predetermined angle.

[0047] If the emergency ejection mechanism 40 also fails to push the push rod 32, i.e., the fully open door leaf 10 and the sealed door frame 20 become jammed, the present invention also provides a pulling device. The pulling device includes a rotating assembly 51 and a first sensing unit 52. The rotating assembly 51 includes a second driving component 511, a connecting shaft, and a roller assembly 512. The end of the push rod 32 facing away from the rotating shaft 33 has a first mounting groove. The second driving component 511 is disposed in the first mounting groove. One end of the connecting shaft is connected to the second driving component 511, and the other end is fixedly connected to the roller assembly 512. Additionally, one end of the roller assembly 512 is in contact with the end of the push rod 32. It is worth noting that the second driving component 511 is configured to drive the connecting shaft to rotate, and simultaneously, the rotation of the connecting shaft causes the roller assembly 512 to rotate 180 degrees.

[0048] Furthermore, the fully opening door 10 has a second mounting groove near its inner side, and the first sensing unit 52 is placed in the second mounting groove. A magnetic sheet 400 is also provided on one side of the roller assembly 512, wherein the first sensing unit 52 senses the magnetic sheet 400 when the roller assembly 512 rotates 180 degrees. The first sensing unit 52 is implemented as a Hall sensor or other sensor capable of detecting the magnetic sheet 400.

[0049] Furthermore, the inner side of the fully openable door leaf 10 also has two opposing third mounting slots, both of which are located below the second mounting slot. The pulling device also includes two third driving components 53, each of which has a second telescopic rod. The two third driving components 53 are respectively disposed in the two third mounting slots, and the two second telescopic rods are respectively connected to the two third driving components 53, both passing through the fully openable door leaf 10 and placed on the outside. It should be noted that the first sensing unit 52 is also connected to the two third driving components 53. That is, when the first sensing unit 52 senses the magnetic sheet 400, the two third driving components 53 start to operate, that is, the third driving components 53 are configured to drive the second telescopic rod to extend or retract by a predetermined length, that is, the second telescopic rod extends or retracts by a predetermined length outward.

[0050] It should be noted that the pulling device further includes two ropes 54, one end of each rope 54 being fixedly connected to the ends of the two externally positioned second telescopic rods. Figure 1 As shown, the top of the vehicle front also has two cable grooves 200, through which the two ropes 54 pass and cooperate with the electric door opening mechanism 30. Specifically, when the user manually pushes the top rod 32 upward, the two external ropes 54 are pulled by the rotation of the rotating shaft 33, thereby pulling the two second telescopic rods, and thus the bottom of the fully opening door leaf 10 is disengaged from the sealing door frame 20 by pushing from the inside and pulling from the outside.

[0051] Furthermore, one end of the rotating shaft 33 has an insertion hole that penetrates the rotating shaft 33, and the pulling device further includes a first movable shaft 55 and a second movable shaft 56, as shown below. Figure 2 As shown, the sealed door frame 20 also has at least one second mounting plate 500 on the side opposite to the fully openable door leaf 10. One end of the first movable shaft 55 is rotatably connected to the second mounting plate 500, and the other end passes through the insertion hole and is located at the end of the rotating shaft 33 opposite to the second mounting groove. The second movable shaft 56 is threadedly connected to the end of the first movable shaft 55 passing through the insertion hole. The length of the second movable shaft 56 is less than the length of the first movable shaft 55, and the user can manually disassemble the second movable shaft 56. The two ropes 54 are respectively wound around the first movable shaft 55 and the second movable shaft 56. That is, when the first movable shaft 55 rotates, the second movable shaft 56 rotates with the first movable shaft 55, thereby tightening the two ropes 54.

[0052] It is worth mentioning that the first movable shaft 55 also has two limiting grooves 5501, and the two limiting grooves 5501 are located between the rotating shaft 33 and the second mounting plate.

[0053] It should be noted that two opposing third mounting plates are welded to one end of the rotating shaft 33 near the second mounting plate, and the pulling device also includes two snap-fit ​​components 57. The two snap-fit ​​components 57 are respectively disposed on the two third mounting plates, and the two snap-fit ​​components 57 are configured to cooperate with the two limiting grooves 5501 respectively. Thus, when the rotating shaft 33 rotates, the first movable shaft 55 rotates with the rotating shaft 33. Conversely, when the snap-fit ​​component 57 does not cooperate with the limiting groove 5501, the first movable shaft 55 will not rotate with the rotating shaft 33.

[0054] Furthermore, each of the snap-fit ​​components 57 includes a fourth drive component 571, a third telescopic rod 572, and a snap-fit ​​block 573. The fourth drive component 571 is fixed to the corresponding third mounting plate, and one end of the third telescopic rod 572 is connected to the fourth drive component 571, while the other end is fixedly connected to the snap-fit ​​block 573. The two snap-fit ​​blocks 573 are respectively positioned opposite the two limiting grooves 5501. When the fourth drive component 571 drives the third telescopic rod 572 to extend a predetermined length, the two snap-fit ​​blocks 573 are respectively placed in the two limiting grooves 5501. This allows the first movable shaft 55 to rotate with the rotating shaft 33 when the rotating shaft 33 rotates, thereby enabling the first movable shaft 55 and the second movable shaft 56 to pull the two ropes 54.

[0055] Additionally, a second sensing unit 300 is provided on one side of the fully openable door leaf 10. The second sensing unit 300 is located near the bottom of the fully openable door leaf 10 or is directly installed on the bottom of the fully openable door leaf 10. The second sensing unit 300 is also connected to the first driving component 41, the two third driving components 53, and the two fourth driving components 571. That is, when the second sensing unit 300 senses that the fully openable door leaf 10 has initially disengaged from the sealing door frame 20, the first driving component 41 and the third driving component 53 are reset.

[0056] The method of the present invention will be described below:

[0057] S1: Directly drive the push component 35. If the external control terminal detects that the moving rod 36 is not in contact with the limit switch B, proceed to step S2.

[0058] S2; Drive the emergency ejection mechanism 40 to operate, that is, the first telescopic rod 42 applies force to the ejector rod 32. If the moving rod 36 contacts the limit switch B, the fully open door 10 is opened to the position. If the second sensing unit 300 detects that the fully open door 10 is initially opened, and the moving rod 36 does not contact the limit switch B, the manual mode of the electric door opening mechanism 30 is activated. If the second sensing unit 300 does not detect that the fully open door 10 is initially opened, the manual mode of the electric door opening mechanism 30 does not need to be activated, and the process proceeds directly to step S3.

[0059] S3: The emergency ejection mechanism 40 is shut down by the control terminal, and then the control terminal drives the second drive component 511 so that the first sensing unit 52 senses the magnetic sheet 400. At the same time, the roller assembly is reset, and then the two third drive components 53 and the two fourth drive components 571 operate, so that the rotating shaft 33 cooperates with the first movable shaft 55. Then the second movable shaft 56 is manually installed, and then the manual mode of the electric door opening mechanism 30 is activated, that is, the force is applied to the fully open door leaf 10 by pushing from the inside and pulling from the outside to ensure that the fully open door leaf 10 is opened.

[0060] In summary, the electric door opening mechanism described in the embodiments of this application is explained, which provides advantages such as outward pulling, detection of whether the fully open door is stuck, and increased probability of opening the fully open door in crisis situations.

[0061] It is worth mentioning that, in this embodiment, the electric door opening mechanism has a simple structure, does not involve complex manufacturing processes or expensive materials, and is highly economical. At the same time, for manufacturers, the electric door opening mechanism provided in this application is easy to produce and inexpensive, which is more conducive to controlling production costs and further facilitates product promotion and use.

[0062] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and any modifications or variations of the embodiments of the present invention may be made without departing from these principles.

Claims

1. An electric door opening mechanism, wherein the electric door opening mechanism is disposed on the front of a subway car, the front of the car including a fully openable door leaf and a sealed door frame, the fully openable door leaf being rotatably disposed on the sealed door frame, and the electric door opening mechanism being directly opposite the fully openable door leaf, characterized in that, The electric door opening mechanism includes: A frame assembly includes a base and two opposing support plates, both of which are disposed on the base and spaced apart by a predetermined distance, and both support plates extend a predetermined length away from the base. A push rod is provided, one end of which is located on the side where the two support plates are close to each other and near the top of the support plates, and the other end of which is in contact with the center of the inner side of the fully opening door leaf. The support plate with a sliding groove has a protrusion on the side near the push rod, and a first mounting plate is provided on the side of the protrusion facing away from the sliding groove. A rotating shaft has two ends that pass through the two support plates respectively, and the two ends of the rotating shaft are respectively placed on both sides of the support plates. The middle section of the rotating shaft also has two ratchet wheels arranged opposite each other. The top rod placed between the two support plates is also fixedly connected to the rotating shaft and located between the two ratchet wheels. A pushing assembly, one end of which is hinged to the base and the other end of which is hinged to the middle section of the top rod; A manual lever, one end of which engages with the two ratchet wheels, and the other end extending a predetermined distance away from the top lever; and An emergency ejection mechanism includes a first driving component and a first telescopic rod. The first driving component is fixed to the first mounting plate and faces the ejector rod. The first telescopic rod is connected to the first driving component and is configured to extend or retract the first telescopic rod by a predetermined length. When the fully open door cannot be ejected, the first driving component extends the first telescopic rod by a predetermined length, thereby pressing the ejector rod. The emergency ejection mechanism can initially eject the fully open door to verify whether the fully open door is stuck.

2. The electric door opening mechanism according to claim 1, wherein the electric door opening mechanism further includes a pulling device, the pulling device including a rotating component and a first sensing unit, the rotating component including a second driving component, a connecting shaft and a roller assembly, wherein a first mounting groove is provided at one end of the top rod away from the rotating shaft, the second driving component is disposed in the first mounting groove, and one end of the connecting shaft is connected to the second driving component, and the other end is fixedly connected to the roller assembly, and one end of the roller assembly is in contact with the end of the top rod.

3. The electric door opening mechanism according to claim 2, wherein the inner side of the fully open door leaf is further provided with a second mounting groove, the first sensing unit is placed in the second mounting groove, and a magnetic sheet is further provided on one side of the roller assembly, wherein the first sensing unit senses the magnetic sheet when the roller assembly rotates 180 degrees.

4. The electric door opening mechanism according to claim 3, wherein the inner side of the fully open door leaf is further provided with two oppositely arranged third mounting slots, and both third mounting slots are located below the second mounting slots, and the pulling device further includes two third driving components, and each third driving component has a second telescopic rod, the two third driving components are respectively disposed in the two third mounting slots, and the two second telescopic rods are respectively connected to the two third driving components, and both penetrate the fully open door leaf and are placed on the outside, and the first sensing unit is also connected to the two third driving components.

5. The electric door opening mechanism according to claim 4, wherein the pulling device further comprises two ropes, one end of each rope being fixedly connected to the ends of the two second telescopic rods placed externally, and the top of the vehicle front also has two wire grooves, the two ropes passing through the two wire grooves respectively and cooperating with the electric door opening mechanism.

6. The electric door opening mechanism according to claim 5, wherein one end of the rotating shaft has an insertion hole through the rotating shaft, and the pulling device further includes a first movable shaft and a second movable shaft, the side of the sealed door frame opposite to the fully opening door leaf also has a second mounting plate, one end of the first movable shaft is rotatably connected to the second mounting plate, the other end passes through the insertion hole and is located at the end of the rotating shaft opposite to the second mounting groove, and the second movable shaft is threadedly connected to the end of the first movable shaft passing through the insertion hole, wherein the two ropes are respectively wound on the first movable shaft and the second movable shaft.

7. The electric door opening mechanism according to claim 6, wherein the first movable shaft further has two limiting grooves, and the two limiting grooves are located between the rotating shaft and the second mounting plate, and the end of the rotating shaft near the second mounting plate is further welded with two opposing third mounting plates, and the pulling device further includes two snap-fit ​​components, the two snap-fit ​​components are respectively disposed on the two third mounting plates, and the two snap-fit ​​components are configured to cooperate with the two limiting grooves respectively.

8. The electric door opening mechanism according to claim 7, wherein each of the latching components includes a fourth driving component, a third telescopic rod and a latching block, the fourth driving component is fixed on the corresponding third mounting plate, and one end of the third telescopic rod is connected to the fourth driving component, and the other end is fixedly connected to the latching block, and the two latching blocks are respectively facing the two limiting grooves.

9. The electric door opening mechanism according to claim 8, wherein a second sensing unit is further provided on one side of the fully open door leaf, and the second sensing unit is close to the bottom of the fully open door leaf.

10. The electric door opening mechanism according to claim 6, wherein the length of the second movable shaft is less than the length of the first movable shaft.

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