Vehicle door emergency opening structure and method

Abstract

The present invention discloses a structure and method for emergency opening of vehicle doors; the structure includes a wedge groove structure, a wedge block, a transmission mechanism and a drive mechanism. The wedge groove structure is arranged on the B-pillar of the vehicle; the wedge block is slidably connected in the vehicle door and corresponds to the position of the wedge groove structure. The transmission mechanism includes a first transmission shaft, a worm gear, a worm and a second transmission shaft. The drive structure is used to drive the second transmission shaft to rotate; the torque of the second transmission shaft is amplified by the worm gear and the worm gear and then transmitted to the first transmission shaft, and drives the wedge block to insert into the wedge groove structure. After the wedge block is inserted into the wedge groove structure, the wedge groove structure generates a thrust toward the outside of the vehicle door on the wedge block. The present application utilizes the wedge block to squeeze the wedge groove structure to push the vehicle door open, and cooperates with the torque amplification effect of the worm gear. In an emergency situation where the vehicle door is difficult to open due to deformation of the vehicle body, the problem of vehicle door jamming can be quickly overcome, and the initial displacement of the vehicle door can be achieved, which greatly improves the success rate of passengers' escape.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric vehicles, and in particular relates to a vehicle door emergency opening structure and method. Background Art

[0002] As an indispensable means of transportation in modern society, automobiles not only greatly facilitate people's travel but also play a vital role in driving national economic development and promoting social progress. With technological advancements and growing environmental awareness, new energy vehicles, with their clean and energy-efficient features, are gradually becoming a new direction for the development of the automotive industry. In my country, the new energy vehicle industry has received strong national support, with sales continuing to grow steadily and promising market prospects.

[0003] However, new energy vehicles also face challenges in their design and use. Compared to traditional fuel-powered vehicles, new energy vehicles often utilize a purely electric-release side door lock system. While this design offers a convenient user experience during normal driving, it can pose a safety hazard in certain circumstances, such as a traffic accident resulting in a power outage. In the event of a power outage, the side door locks may not function properly, making it difficult to open the doors. This not only complicates passenger escape in an emergency but can also delay rescue efforts.

[0004] Furthermore, after a serious accident, the vehicle's body structure may deform, directly affecting the proper opening of all doors (including those on the unaffected side). The initial stage of door opening is particularly challenging in a deformed vehicle, as this is the critical point where the door begins to move from a fully closed state. At this point, the door hinges may become obstructed by bending or misalignment of the body metal, preventing the door from opening easily. Once the door has passed the initial stage of movement, it can be easily opened by pulling from the outside or pushing from the inside.

[0005] Patent publication number "CN111852214A" discloses a "door lock structure with emergency opening function and its use method," which can unlock the door even when the vehicle is powered off. However, it cannot complete the initial movement of the door if it is stuck. Therefore, it is necessary to design a device for completing the initial movement of the door in an emergency situation. Summary of the Invention

[0006] The purpose of the present invention is to provide a vehicle door emergency opening structure and method in response to the above problems.

[0007] In a first aspect, the present invention provides a vehicle door emergency opening structure comprising a wedge groove structure, a wedge block, a transmission mechanism, and a drive mechanism. The wedge groove structure is disposed on the vehicle's B-pillar; the wedge block is slidably connected to the vehicle door and corresponds to the position of the wedge groove structure. The transmission mechanism comprises a first transmission shaft, a worm gear, a worm, and a second transmission shaft. The first and second transmission shafts are both rotatably connected to the vehicle door. The intermeshing worm gear and worm gear are respectively fixed to the first and second transmission shafts. The first transmission shaft is in transmission connection with the wedge block. The drive mechanism employs one or both of a manual drive structure and an electric drive structure. The drive structure is configured to rotate the second transmission shaft. The torque of the second transmission shaft is amplified by the worm gear and worm gear and transmitted to the first transmission shaft, thereby driving the wedge block to insert into the wedge groove structure. Once the wedge block is inserted into the wedge groove structure, the wedge groove structure generates a thrust force on the wedge block toward the outside of the vehicle door.

[0008] Preferably, the driving structure includes a manual driving structure and an electric driving structure, both of which are detachably connected to the second transmission shaft.

[0009] Preferably, the manual drive structure includes a limiting mechanism, a rotary handle, and a shaft guide structure. The shaft guide structure is fixed to the vehicle door. The rotary handle includes a manual shaft and an extension rod. The inner end of the extension rod is connected to the manual shaft. The shaft guide structure has a mounting hole. The manual shaft passes through the mounting hole. A fixing clip is fixed to the inner side wall of the mounting hole. A guide groove is defined on the cylindrical side of the manual shaft. The guide groove includes a spiral groove section and an annular groove section. One end of the spiral groove section is connected to the annular groove section. The outer end of the fixing clip extends into the guide groove. When the fixing clip is in the spiral groove section, the manual shaft and the shaft guide structure form a spiral pair. When the fixing clip is in the annular groove section, the manual shaft and the shaft guide structure form a rotation pair. The transmission mechanism also includes a driving helical gear and a driven helical gear. The driving helical gear is fixed to the manual shaft. The driven helical gear is fixed to the second transmission shaft. When the fixing clip is in the end of the spiral groove section facing away from the annular groove section, the driving helical gear and the driven helical gear separate. When the fixing buckle is in the annular groove section, the driving helical gear is meshed with the driven helical gear.

[0010] Preferably, the transmission ratio between the worm and the worm wheel is 15 to 25. The transmission ratio between the driving helical gear and the driven helical gear is greater than 1.

[0011] Preferably, a limiting mechanism is installed at the end of the extension rod facing away from the manual rotating shaft. The limiting mechanism includes a shell, a limiting pin, a starting rod and a starting spring. The shell is fixed to the outer end of the extension rod. A first guide cavity and a second guide cavity that are interconnected are provided in the inner cavity of the shell. The limiting pin is slidably connected to the shell. A starting spring is provided between the inner cavity of the shell and the limiting pin. The starting rod is slidably connected in the shell, and the outer end extends out of the shell. In the initial state, the limiting pin is inserted into the slot structure; the starting spring applies an elastic force to the limiting pin in the direction of exiting the slot structure. The starting rod prevents the limiting pin from sliding in the direction of exiting the slot structure. By pulling the starting rod, the starting rod can be separated from the limiting pin, and the limiting pin exits the slot structure under the elastic force of the starting spring.

[0012] Preferably, the electric drive structure includes a drive motor and a permanent magnet clutch. The drive motor is installed in the vehicle door; the output shaft of the drive motor is connected to the end of the second transmission shaft through a permanent magnet clutch. The permanent magnet clutch includes an input turntable, an arc magnet, a friction plate, and an annular magnet. The input turntable, the friction plate, and the annular magnet are coaxially arranged and arranged in sequence. The friction plate, the annular magnet, and the second transmission shaft are fixed. A gap is provided between the input turntable and the friction plate. The input turntable is fixed or transmission-connected to the output shaft of the motor. A plurality of arc grooves are provided on the side of the input turntable facing the friction plate. An arc magnet is provided in each arc groove. The arc magnet and the corresponding arc groove constitute a sliding pair that slides radially along the input turntable. The arc magnet has two limit positions in the arc groove, namely, an inner limit position and an outer limit position.

[0013] The magnetic poles of the annular magnet are distributed in a radial direction. The magnetic poles of the arc magnet are distributed in an axial direction of the permanent magnet clutch. The magnetic poles of the arc magnet's end surface facing the friction plate are aligned with the inner ring magnetic poles of the arc magnet and opposite to the outer ring magnetic poles of the arc magnet.

[0014] Initially, the arc magnet remains at its inner limit position, generating a repulsive force between the arc magnet and the ring magnet, disengaging the permanent magnet clutch. As the input turntable rotates, the arc magnet moves outward to its outer limit position under centrifugal force, generating an attractive force between the arc magnet and the ring magnet, engaging the permanent magnet clutch.

[0015] Preferably, the permanent magnet clutch further comprises a compression spring and a position-limiting counterweight. A position-limiting hole is defined on the sidewall of the arc-shaped slot, tilted toward the center of the input turntable. The compression spring and position-limiting counterweight are mounted in the position-limiting hole. The two ends of the compression spring respectively abut the inner end surface of the position-limiting hole and the position-limiting counterweight. The outer end of the position-limiting counterweight is tilted against the edge of the outer arc surface of the arc magnet. Initially, the arc magnet is in its inner limit position, restrained by the position-limiting counterweight.

[0016] Preferably, the vehicle further includes a detachable anti-collision beam; the detachable anti-collision beam comprises a fixed section and a movable section. The fixed section is mounted on the vehicle door. The movable section and the fixed section are coaxially arranged to form a sliding pair. A wedge block is fixed to the end of the movable section facing away from the fixed section. The first transmission shaft and the wedge block are connected to each other via a meshing cylindrical gear and rack. The cylindrical gear is fixed to the first transmission shaft. The rack is fixed to the movable section.

[0017] Preferably, when the vehicle door is closed, the wedge block is aligned with the wedge groove structure. A first oblique thrust surface is provided on the wedge block. A second oblique thrust surface is provided in the wedge groove structure. The second oblique thrust surface is located on a side wall of the wedge groove structure that is adjacent to the vehicle interior and is inclined toward the exterior of the vehicle. When the wedge block is inserted into the wedge groove structure, the second oblique thrust surface of the wedge groove structure applies a thrust to the first oblique thrust surface of the wedge block that is inclined toward the exterior of the vehicle door.

[0018] In a second aspect, the present invention provides a vehicle door emergency opening method, which uses the aforementioned vehicle door emergency opening structure; the vehicle door emergency opening method is as follows:

[0019] If the electric drive structure is controlled, the electric drive structure drives the second transmission shaft to rotate, and after amplifying the torque through the worm and worm gear, it drives the wedge block to extend into the wedge groove structure and squeeze the wedge groove structure, so that the car door is pushed outward and overcomes the obstruction to open; after that, the electric drive structure drives the wedge block to reset.

[0020] If the electric drive structure is out of control, the person inside the car will continue to turn the rotary handle in the forward direction; during the rotation process, the rotary handle first performs a spiral motion, causing the active helical gear to engage with the driven helical gear; then the active helical gear drives the second transmission shaft to rotate through the driven helical gear, and after the torque is amplified by the worm and worm gear, it drives the wedge block to extend into the wedge groove structure and squeeze the wedge groove structure, so that the car door is pushed outward and overcomes the obstruction to open; then, the rotary handle is rotated in the reverse direction to drive the wedge block to reset.

[0021] In a third aspect, the present invention provides a vehicle door equipped with the aforementioned vehicle door emergency opening structure.

[0022] The present invention has the following beneficial effects:

[0023] 1. This application utilizes a wedge-shaped block to squeeze a wedge-shaped groove structure to push the door open, and cooperates with the torque amplification effect of the worm gear. In an emergency situation where the door is difficult to open due to body deformation, the problem of door jamming can be quickly overcome, and the initial displacement of the door can be achieved, greatly improving the success rate of passengers' escape.

[0024] 2. The present invention automatically opens a blocked door via an electric drive mechanism upon detecting a collision. Even in the event of a vehicle power failure, the wedge can be moved by rotating the handle, freeing the door and ensuring an unobstructed escape route in an emergency.

[0025] 3. The present invention provides an initial spiral displacement for the rotary handle and a permanent magnet clutch between the motor and the second transmission shaft, thereby preventing the handle from rotating when the motor is working; the rotation of the handle will not be hindered by the motor that self-locks due to a malfunction, further improving the functional stability of the door emergency opening structure.

[0026] 4. The permanent magnet clutch provided in the present invention does not require power supply and can remain in a disengaged state before the motor rotates, and automatically engages after the motor rotates. While simplifying the control circuit and reducing equipment costs, it helps to improve the reliability of the door emergency opening structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a front structural schematic diagram of the present invention;

[0029] Figure 3 Schematic diagram of the connection between the detachable anti-collision beam and the vehicle door in the present invention;

[0030] Figure 4 Schematic cross-section of the manual drive structure of the present invention;

[0031] Figure 5 It is a three-dimensional schematic diagram of the manual drive structure of the present invention;

[0032] Figure 6 is a cross-sectional schematic diagram of the limiting mechanism of the present invention;

[0033] Figure 7 Schematic cross-section of the permanent magnet clutch of the present invention;

[0034] Figure 8 Schematic diagram of the explosion of the permanent magnet clutch in the present invention;

[0035] Figure 9 Schematic cross-section of the input rotary plate of the permanent magnet clutch of the present invention;

[0036] Figure numerals: 1, wedge groove structure; 2, wedge block; 3, first transmission shaft; 4, cylindrical gear; 5, rotary handle; 6, worm; 7, vehicle B-pillar; 8, limit mechanism; 9, vehicle door; 10, driving helical gear; 11, driven helical gear; 12, second transmission shaft; 13, annular magnet; 14, friction plate; 15, input turntable; 16, drive motor; 17, worm gear; 18, rack; 19, movable segment; 20, fixed segment; 21, starting pull rod; 22, limit spring; 23, limit pin; 24, starting spring; 25, housing; 26, guide groove; 26-1, spiral groove segment; 26-2, annular groove segment; 27, arc groove; 28, arc magnet; 29, clamping spring; 30, limit counterweight; 31, annular magnet outer ring; 32, annular magnet inner ring; 33, spline shaft segment; 34, fixing buckle. DETAILED DESCRIPTION

[0037] The present invention will be further described below with reference to the accompanying drawings.

[0038] like Figure 1 and 2 As shown, a vehicle door emergency opening structure includes a detachable anti-collision beam, a wedge block 2, a wedge groove structure 1, a transmission mechanism, a manual drive structure, and an electric drive structure. The detachable anti-collision beam includes a fixed section 20 and a movable section 19. The fixed section 20 is mounted on the vehicle door 9. The movable section 19 and the fixed section 20 are coaxially arranged to form a sliding pair. The end of the movable section 19 facing away from the fixed section 20 faces the vehicle B-pillar 7 and is fixed with the wedge block 2. The output ends of the manual drive structure and the electric drive structure are connected to the movable section 19 through a transmission mechanism, so that the driving force output by the manual drive structure and the electric drive structure can be transmitted by the transmission mechanism to the movable section 19 of the detachable anti-collision beam fixed to the vehicle door.

[0039] like Figure 3 As shown, the wedge groove structure 1 is provided on the B-pillar 7 of the vehicle; when the vehicle door is closed, the wedge block 2 is aligned with the wedge groove structure 1. A first oblique push surface is provided on the wedge block 2. A second oblique push surface is provided in the wedge groove structure 1. The second oblique push surface is located on the side wall of the wedge groove structure 1 close to the interior of the vehicle and is inclined toward the outside of the vehicle. Driven by a manual drive structure or an electric drive structure, the wedge block 2 can be inserted into the wedge groove structure 1 so that the first oblique push surface on the wedge block 2 contacts the second oblique push surface in the wedge groove structure 1; thereafter, the wedge block 2 further slides inside the wedge groove structure 1, and under the pressure of the oblique surface, the wedge block 2 is subjected to a thrust toward the outside of the vehicle, so that the vehicle door that cannot be opened due to the deformation of the vehicle body frame is pushed open; thereafter, as long as the wedge block 2 is reset, the people in the vehicle can push open the door and escape.

[0040] like Figure 1 and 2As shown, the transmission mechanism includes a cylindrical gear 4, a first transmission shaft 3, a worm gear 17, a worm 6, a second transmission shaft 12, a driving bevel gear 10 and a driven bevel gear 11. The rack 18 is fixed on the movable section 19. The first transmission shaft 3 is rotatably connected to the vehicle door. The worm gear 17 and the cylindrical gear 4 are circumferentially fixed to the first transmission shaft 3 by a key connection. The cylindrical gear 4 is meshed with the rack 18. Specifically, the end of the first transmission shaft 3 is mounted in the vehicle door 9 through a bearing. One end of the cylindrical gear 4 is engaged with the first shoulder of the first transmission shaft 3, and the other end is engaged with the first sleeve on the first transmission shaft 3. The other end of the first sleeve is connected to the first bearing on the vehicle door 9. The worm gear 17 is circumferentially fixed to the first transmission shaft 3 by a key connection, one end of the worm gear 17 is engaged with the second shoulder of the first transmission shaft 3, and the other end is engaged with the second sleeve on the first transmission shaft 3, and the other end of the second sleeve is connected to the second bearing.

[0041] The second drive shaft 12 is rotatably connected to the vehicle door. The worm 6 is integrally formed with the second drive shaft 12. The worm 6 meshes with the worm wheel 17. The driven helical gear 11 is circumferentially fixed to the second drive shaft 12 via a key connection. Specifically, the second drive shaft 12 is mounted within the vehicle door via a bearing. The large end of the driven helical gear 11 engages with the shoulder of the second drive shaft 12, and the small end of the driven helical gear 11 is connected to the shaft sleeve. The transmission mechanism can achieve a high transmission ratio, and the worm gear self-locks in reverse to prevent movement of the movable section of the anti-collision beam.

[0042] The driving helical gear 10 is mounted on the manual drive structure. In the initial state, the driving helical gear 10 is separated from the driven helical gear 11. When the driving helical gear 10 moves axially along with the manual drive structure, the driving helical gear 10 meshes with the driven helical gear 11.

[0043] like Figure 1 、 4 As shown in Figure 5, the manual drive structure includes a limit mechanism 8, a rotary handle 5, and a shaft guide structure. The shaft guide structure is fixed to the vehicle door. The rotary handle 5 includes an integrally formed manual shaft and an extension rod. The inner end of the extension rod is connected to the side of the manual shaft. The manual shaft is connected to the shaft guide structure. The limit mechanism 8 is mounted on the end of the extension rod facing away from the manual shaft. The driving bevel gear 10 is fixed to the inner end of the manual shaft.

[0044] The shaft guide structure has a mounting hole. The manual shaft passes through the mounting hole and forms a cylindrical pair with the mounting hole, allowing the manual shaft to both rotate about the axis and slide axially. In some embodiments, a linear bearing is provided between the manual shaft and the mounting hole. A fixing buckle 34 is fixed to the inner wall of the mounting hole.

[0045] A guide groove 26 is defined on the cylindrical side of the manual shaft. The guide groove 26 comprises a spiral groove section 26-1 and an annular groove section 26-2. The annular groove section 26-2 circumscribes the manual shaft. One end of the spiral groove section 26-1 communicates with the annular groove section 26-2. The spiral groove section 26-1 is located on the side of the annular groove section 26-2 closest to the driving bevel gear 10. The widths of both the spiral groove section 26-1 and the annular groove section 26-2 are equal to the width of the securing clip 34.

[0046] The outer end of the fixing buckle 34 extends into the guide groove 26. When the fixing buckle 34 is in the spiral groove section 26-1, the manual shaft and the vehicle door form a spiral pair. When the manual shaft rotates, it drives the driving bevel gear 10 to generate an axial displacement component, which is used to connect and disconnect the driving bevel gear 10 and the driven bevel gear 11. When the fixing buckle 34 is in the annular groove section 26-2, the manual shaft and the vehicle door form a rotational pair, connecting the driving bevel gear 10 and the driven bevel gear 11. At this time, rotation of the manual shaft can drive the driven bevel gear 11 to rotate via the driving bevel gear 10. In the initial state, the fixing buckle 34 is at the end of the spiral groove section 26-1 facing away from the annular groove section 26-2. The driving bevel gear 10 and the driven bevel gear 11 are separated, thereby preventing the rotation of the second transmission shaft 12 from causing the manual drive structure to rotate.

[0047] like Figure 6 As shown, the limiting mechanism 8 is used to lock the position of the manual shaft in its initial state. It includes a housing 25, a limiting pin 23, a limiting spring 22, an actuating lever 21, and an actuating spring 24. Housing 25 is fixed to the outer end of the extension rod. Housing 25 contains a first guide cavity and a second guide cavity, each of which has perpendicular axes and is interconnected.

[0048] The inner end of the stop pin 23 is equipped with a piston disc that is slidably connected to the first guide cavity. The outer end of the stop pin 23 extends through the side wall of the housing 25 and extends outside the housing 25. A retaining slot structure is fixed to the vehicle door; in the initial state, the stop pin 23 is inserted into the slot structure, locking the rotary handle 5. An activation spring 24 is mounted on the stop pin 23, with its ends respectively abutting the piston disc at the inner end of the stop pin 23 and the end surface of the first guide cavity, exerting a thrust force on the stop pin 23 to slide inward.

[0049] The starting rod 21 extends through the sidewall of the housing 25 and through the second guide cavity. A retaining plate is fixed to the inner end of the starting rod 21, extending into the first guide cavity; the outer end of the starting rod 21 extends outside the housing 25. A retaining spring 22 is sleeved on the starting rod 21, with its ends respectively abutting against the retaining plate on the inner end of the starting rod 21 and the end surface of the second guide cavity, exerting a force on the starting rod 21 to slide inward.

[0050] In the initial state, the limit plate at the inner end of the starting rod 21 prevents the limit pin 23 from sliding further inward; by pulling the starting rod 21 outward, the limit plate at the inner end of the starting rod 21 can be disengaged from the first guide cavity, and the limit pin 23 loses its limit. Under the elastic force of the starting spring 24, it slides inward and separates from the slot structure, and the rotation of the rotating handle 5 is released.

[0051] like Figure 1 、 7 As shown in FIG8 , the electric drive structure includes a drive motor 16 and a permanent magnet clutch. The drive motor 16 is fixed on the vehicle door; the output shaft of the drive motor 16 is connected to the end of the second transmission shaft 12 through a permanent magnet clutch. The permanent magnet clutch includes an input turntable 15, an arc magnet 28, a clamping spring 29, a limit counterweight 30, a friction plate 14, and an annular magnet 13. A spline shaft section 33 is integrally formed on the second transmission shaft 12. The input turntable 15, the friction plate 14 and the annular magnet 13 are coaxially arranged and arranged in sequence. The friction plate 14 is bonded and fixed to the annular magnet 13. The center hole of the friction plate 14 is connected to the spline shaft section 33 by a spline. Direction of magnetic pole distribution

[0052] like Figure 9 As shown, the side of the input disc 15 facing away from the friction plate 14 is fixed to the output shaft of the motor 16. The side of the input disc 15 facing the friction plate 14 is provided with a plurality of arcuate slots 27 evenly distributed circumferentially along the axis of the input disc 15. Each arcuate slot 27 is fitted with an arcuate magnet 28. The arcuate magnets 28 and the corresponding arcuate slots 27 form a sliding pair that slides radially along the input disc 15.

[0053] The arc magnet 28 has two limit positions in the arc slot, namely the inner limit position and the outer limit position. The inner limit position represents the end position of the arc slot close to the center of the input turntable 15. The outer limit position represents the end position of the arc slot away from the center of the input turntable 15.

[0054] A stopper hole is defined on the sidewall of the arcuate slot, tilted toward the center of the input turntable 15. A compression spring 29 and a stopper weight 30 are mounted within the stopper hole. The ends of the compression spring 29 abut the inner end surface of the stopper hole and the stopper weight 30, respectively. The outer end of the stopper weight 30 abuts the outer edge of the arcuate magnet 28 at an angle. Initially, the arcuate magnet 28 is restrained by the stopper weight 30 at its inner limit position.

[0055] The magnetic poles of the annular magnet 13 are distributed radially, meaning the poles of the inner ring of the annular magnet 13 are opposite to those of the outer ring. Therefore, the annular magnet 13 is divided into an outer ring 31 and an inner ring 32, with opposite magnetic poles. The magnetic poles of the arc magnet 28 are distributed axially with respect to the permanent magnet clutch. The poles of the end face of the arc magnet 28 facing the friction plate 14 are the same as those of the inner ring 32, and opposite to those of the outer ring 31.

[0056] When the arc-shaped magnet 28 is at the inner limit position, the arc-shaped magnet 28 is aligned with the inner ring 32 of the annular magnet. At this time, a repulsive force is generated between the arc-shaped magnet 28 and the annular magnet 13. Under the action of the repulsive force, the annular magnet 13 is separated from the friction plate 14, and the permanent magnet clutch is in a disengaged state.

[0057] When the arc magnet 28 is at the outer limit position, the arc magnet 28 is aligned with the outer ring 31 of the annular magnet; at this time, an attractive force is generated between the arc magnet 28 and the annular magnet 13, and the annular magnet 13 squeezes the friction plate 14 under the action of the attractive force, and the permanent magnet clutch is in a engaged state.

[0058] Therefore, the drive motor 16 in this embodiment can drive the second transmission shaft 12 to rotate; and the rotation of the second transmission shaft 12 will not affect the drive motor 16, ensuring that the motor will not affect the use of the rotating handle 5 when the power is off.

[0059] The working method of the door emergency opening structure is as follows:

[0060] When the vehicle is deformed due to a collision or other reasons, causing the door to be unable to open normally; if the power is not turned off in the vehicle, the drive motor 16 rotates, driving the second transmission shaft 12 to rotate, and after the torque is amplified by the worm 6 and the worm wheel 17, the wedge block 2 at the end of the movable section 19 is driven to extend into the wedge groove structure 1, and squeeze the second guide slope in the wedge groove structure 1, so that the door is pushed outward; because the torque is amplified, it can force the door to open outward for a distance; at this time, the resistance to opening the door is reduced; after that, the wedge block 2 is reset, and the person in the car pushes the door further open.

[0061] If the power in the car has been cut off due to a collision, the person inside the car pulls the starting rod 21 outward to release the lock of the rotary handle 5; thereafter, the rotary handle 5 is continuously rotated; during the rotation process, the rotary handle 5 first performs a spiral motion, so that the active bevel gear 10 engages with the driven bevel gear 11; then the active bevel gear 10 drives the second transmission shaft 12 to rotate through the driven bevel gear 11 and amplifies the torque for the first time. After the torque is amplified for the second time through the worm 6 and the worm wheel 17, the wedge block 2 at the end of the movable section 19 is driven to extend into the wedge groove structure 1 and squeeze the second guide inclined surface in the wedge groove structure 1, so that the car door is subjected to an outward thrust; due to the amplified torque, the car door can be forced to open outward for a distance; thereafter, the wedge block 2 is reset, and the person inside the car pushes the car door further open.

Claims

1. A vehicle door emergency opening structure, characterized in that: The invention comprises a wedge-shaped groove structure (1), a wedge-shaped block (2), a transmission mechanism and a driving mechanism; the wedge-shaped groove structure (1) is arranged on a B-pillar (7) of a vehicle; the wedge-shaped block (2) is slidably connected in a vehicle door (9) and corresponds in position to the wedge-shaped groove structure (1); the transmission mechanism comprises a first transmission shaft (3), a worm wheel (17), a worm (6) and a second transmission shaft (12); the first transmission shaft (3) and the second transmission shaft (12) are both rotatably connected in the vehicle door (9); The mutually meshing worm wheel (17) and worm (6) are respectively fixed on the first transmission shaft (3) and the second transmission shaft (12); the first transmission shaft (3) is connected to the wedge block (2) in a transmission manner; the driving mechanism adopts one or both of a manual driving structure and an electric driving structure; the driving structure is used to drive the second transmission shaft (12) to rotate; after the wedge block (2) is inserted into the wedge groove structure (1), the wedge groove structure (1) generates a thrust on the wedge block (2) toward the outside of the vehicle door; The driving structure includes a manual driving structure and an electric driving structure; both the manual driving structure and the electric driving structure are in detachable transmission connection with the second transmission shaft (12); The manual drive structure comprises a limiting mechanism (8), a rotating handle (5) and a rotating shaft guide structure; the rotating shaft guide structure is fixed on the vehicle door; the rotating handle (5) comprises a manual rotating shaft and an extension rod; the inner end of the extension rod is connected to the manual rotating shaft; a mounting hole is provided on the rotating shaft guide structure; the manual rotating shaft passes through the mounting hole; a fixing buckle (34) is fixed on the inner side wall of the mounting hole; a guide groove (26) is provided on the cylindrical side surface of the manual rotating shaft; the guide groove (26) comprises a spiral groove section (26-1) and an annular groove section (26-2); one end of the spiral groove section (26-1) is connected to the annular groove section (26-2); the outer end of the fixing buckle (34) extends into the guide groove (26); when the fixing buckle (34) is in the spiral groove, the fixing buckle (34) is in the spiral groove. When the groove section (26-1) is in the manual rotating shaft and the rotating shaft guide structure, a spiral pair is formed; when the fixing buckle (34) is in the annular groove section (26-2), the manual rotating shaft and the rotating shaft guide structure form a rotating pair; the transmission mechanism further comprises a driving helical gear (10) and a driven helical gear (11); the driving helical gear (10) is fixed on the manual rotating shaft; the driven helical gear (11) is fixed on the second transmission shaft (12); when the fixing buckle (34) is in the end of the spiral groove section (26-1) away from the annular groove section (26-2), the driving helical gear (10) and the driven helical gear (11) are separated; when the fixing buckle (34) is in the annular groove section (26-2), the driving helical gear (10) and the driven helical gear (11) are meshed.

2. The vehicle door emergency opening structure according to claim 1, characterized in that: The end of the extension rod away from the manual shaft is provided with a limit mechanism (8); the limit mechanism (8) comprises a housing (25), a limit pin (23), a start pull rod (21) and a start spring (24); the housing (25) is fixed to the outer end of the extension rod; a first guide cavity and a second guide cavity that are interconnected are provided in the inner cavity of the housing (25); the limit pin (23) is slidably connected to the housing (25); a start spring (24) is provided between the inner cavity of the housing (25) and the limit pin (23); the start pull rod The rod (21) is slidably connected in the housing (25), and the outer end extends out of the housing (25); in the initial state, the limit pin (23) is inserted into the slot structure; the starting spring (24) applies an elastic force to the limit pin (23) in the direction of exiting the slot structure; the starting pull rod (21) blocks the limit pin (23) from sliding in the direction of exiting the slot structure; by pulling the starting pull rod (21), the starting pull rod (21) can be separated from the limit pin (23), and the limit pin (23) exits the slot structure under the elastic force of the starting spring (24).

3. The vehicle door emergency opening structure according to claim 1, characterized in that: The electric drive structure includes a drive motor (16) and a permanent magnet clutch; the drive motor (16) is installed in the vehicle door; the output shaft of the drive motor (16) is connected to the end of the second transmission shaft (12) through the permanent magnet clutch; the permanent magnet clutch includes an input turntable (15), an arc magnet (28), a friction plate (14), and an annular magnet (13); the input turntable (15), the friction plate (14), and the annular magnet (13) are coaxially arranged and arranged in sequence; the friction plate (14), the annular magnet (13), and the second transmission shaft (12) are fixed A gap is provided between the input turntable 15 and the friction plate 14; the input turntable (15) is fixedly or drivingly connected to the output shaft of the motor (16); a plurality of arcuate grooves (27) are provided on the side of the input turntable (15) facing the friction plate (14); an arcuate magnet (28) is provided in each arcuate groove (27); the arcuate magnet (28) and the corresponding arcuate groove (27) form a sliding pair that slides radially along the input turntable (15); the arcuate magnet (28) has two limit positions in the arcuate groove, namely an inner limit position and an outer limit position; The magnetic pole distribution direction of the annular magnet (13) is radial; the magnetic pole distribution direction of the arc-shaped magnet (28) is axial to the permanent magnet clutch; the magnetic pole of the end face of the arc-shaped magnet (28) facing the friction plate (14) is the same as the inner ring magnetic pole of the arc-shaped magnet (28) and opposite to the outer ring magnetic pole of the arc-shaped magnet (28); In the initial state, the arc-shaped magnet (28) is maintained at the inner limit position, and a repulsive force is generated between the arc-shaped magnet (28) and the annular magnet (13), so that the permanent magnet clutch is in a disengaged state; when the input turntable (15) rotates, the arc-shaped magnet (28) moves outward to the outer limit position under the centrifugal action, and an attractive force is generated between the arc-shaped magnet (28) and the annular magnet (13), so that the permanent magnet clutch is in a coupled state.

4. The vehicle door emergency opening structure according to claim 3, characterized in that: The permanent magnet clutch further comprises a pressing spring (29) and a limiting counterweight (30); a limiting hole inclined toward the center of the input turntable (15) is opened on the side wall of the arc groove; a pressing spring (29) and a limiting counterweight (30) are installed in the limiting hole; the two ends of the pressing spring (29) respectively abut against the inner end surface of the limiting hole and the limiting counterweight (30); the outer end of the limiting counterweight (30) is inclined against the edge of the outer arc surface of the arc magnet (28); in the initial state, the arc magnet (28) is in the inner limit position under the restriction of the limiting counterweight (30).

5. The vehicle door emergency opening structure according to claim 1, characterized in that: The vehicle further comprises a detachable anti-collision beam; the detachable anti-collision beam comprises a fixed section (20) and a movable section (19); the fixed section (20) is mounted on the vehicle door (9); the movable section (19) and the fixed section (20) are coaxially arranged to form a sliding pair; the wedge block (2) is fixed to the end of the movable section (19) facing away from the fixed section (20); the first transmission shaft (3) and the wedge block (2) are connected in transmission via a cylindrical gear (4) and a rack (18) that mesh with each other; the cylindrical gear (4) is fixed on the first transmission shaft (3); and the rack (18) is fixed on the movable section (19).

6. The vehicle door emergency opening structure according to claim 1, characterized in that: When the vehicle door is closed, the wedge block (2) is aligned with the wedge groove structure (1); a first oblique push surface is provided on the wedge block (2); a second oblique push surface is provided in the wedge groove structure (1); the second oblique push surface is located on the side wall of the wedge groove structure (1) close to the vehicle interior and is inclined toward the outside of the vehicle; after the wedge block (2) is inserted into the wedge groove structure (1), the second oblique push surface of the wedge groove structure (1) applies a thrust inclined toward the outside of the vehicle door to the first oblique push surface of the wedge block (2).

7. A vehicle door emergency opening method, characterized in that: The vehicle door emergency opening structure according to claim 1 is used; the vehicle door emergency opening method is as follows: If the electric drive structure is controlled, the electric drive structure drives the second transmission shaft (12) to rotate, and after the torque is amplified by the worm (6) and the worm wheel (17), the wedge block (2) is driven to extend into the wedge groove structure (1) and squeeze the wedge groove structure (1), so that the door is pushed outward and overcomes the obstruction to open; thereafter, the electric drive structure drives the wedge block (2) to reset; If the electric drive structure is not controlled, the person in the vehicle continues to rotate the rotary handle (5) in the forward direction; during the rotation process, the rotary handle (5) first performs a spiral motion, so that the active helical gear (10) and the driven helical gear (11) are engaged; then the active helical gear (10) drives the second transmission shaft (12) to rotate through the driven helical gear (11), and after the torque is amplified by the worm (6) and the worm wheel (17), the wedge block (2) is driven to extend into the wedge groove structure (1) and squeeze the wedge groove structure (1), so that the vehicle door is pushed outward and overcomes the obstruction to open; then, the rotary handle (5) is rotated in the reverse direction to drive the wedge block (2) to reset.

8. A vehicle door, characterized in that: A vehicle door emergency opening structure as described in any one of claims 1 to 6 is installed.

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