A large-opening sliding door system with integrated drive and locking

Abstract

The present invention discloses a large-opening plug-type sliding door system with integrated drive and locking, comprising a door leaf and an integrated drive and locking device, the integrated drive and locking device comprising a drive device and a linkage locking device. The drive device comprises a drive assembly and a shift fork, the upper end housing of the drive assembly being fixedly connected to the shift fork, the lower end output shaft of the drive assembly being sleeved with an output end gear and a limit assembly, the output end gear and a rack fixedly connected to the door leaf forming a gear meshing engagement; the limit assembly being provided with a roller, and a notch being provided on the door leaf behind the rack for matching the roller; the linkage locking device comprising a lower locking device disposed on the lower half of the vehicle body, the shift fork being provided with a shift post, an unlocking lever of the lower locking device having a sliding groove at one end thereof that cooperates with the shift post, the shift fork driving the unlocking lever to rotate via the shift post, and a lock pin being provided on the door leaf that cooperates with the lower locking device. The present invention can improve the locking stability of large-opening vehicle doors.

Description

Technical Field

[0001] The present invention relates to a rail transit vehicle door system, and in particular to a large-opening plug door system with integrated driving and locking. Background Art

[0002] Existing plug-and-slide door systems have a limited opening and cannot meet the needs of large cargo transportation. Large-opening door systems place high demands on load-bearing, movement, and locking.

[0003] Existing Sierra doors generally adopt an upper load-bearing structure. As the opening of a large-opening Sierra door increases, the weight of the door also increases. The use of an upper load-bearing device requires a high load-bearing capacity of the load-bearing device, while increasing the weight of the load-bearing device and the motor load, and the operating cost of the door also increases.

[0004] Large door panels require extra-long guide rails, making single-point guides difficult to reliably guide. Using multiple sets of parallel guide rails increases the weight and space required for the mechanism, hindering the simplification and lightweight design of the door system.

[0005] Compared to regular-sized doors, large-sized doors require more locking points to ensure sealing and locking performance. This increased number of locking points leads to higher operating costs. Existing plug-in door actuators and locking mechanisms are driven by separate motors. These mechanisms are complex, costly, prone to failure, and occupy significant interior space.

[0006] At present, the existing integrated drive and locking devices for sliding doors have a relatively simple form of restraint, which cannot withstand the closing impact of a large-opening door, nor can it provide reliable locking constraints for large-sized doors. In the prior art, for example, the invention patent application with publication number CN114893079A discloses an integrated drive and locking device for sliding doors, in which a rotating column is connected to a drive motor and a plurality of locking gears, and the restraint cooperation between the locking gear and the locking plate is completed by the relative movement of the transmission gear in the sliding section. The drive gear is driven by the drive motor and cooperates with the rack installed on the door to complete the movement of the door. The door in this solution is small in size and weight, and the locking structure in the solution is relatively simple in layout, with limited strength and rigidity, and cannot withstand the large impact load of opening and closing the door. The stability of locking for large-opening doors is poor. Summary of the Invention

[0007] Purpose of the invention: The purpose of the present invention is to provide a large-opening Sierra door system with integrated drive and locking, which can improve the locking stability of large-opening vehicle doors.

[0008] Technical solution: The present invention provides a large-opening plug-type sliding door system with integrated drive and locking, comprising a door leaf and an integrated drive and locking device installed on a vehicle body on one side of the door leaf, wherein the integrated drive and locking device comprises a drive device and a linkage locking device connected to the drive device; the drive device comprises a drive motor, a reducer assembly and a shift fork, and the upper end housing of the drive motor is fixedly connected to the shift fork; the reducer assembly adopts a floating structure, and its input shaft is rotationally connected to the motor output shaft at the lower end of the drive motor, and the reducer assembly rotates around the motor output shaft of the drive motor to realize the plugging action of the reducer assembly with the door leaf, and a fixed sleeve is arranged on the output shaft of the reducer assembly The output end gear is rotatably connected to the limit assembly, and the output end gear and the rack fixedly connected to the door leaf form a gear meshing; the limit assembly is provided with a roller, the roller always fits behind the rack, and rolls in the rolling groove formed between the rack and the door leaf, so that the output end gear and the rack maintain correct meshing and will not disengage when the door leaf is pulled; the linkage locking device includes a lower locking device arranged in the lower half of the vehicle body, a shift fork is provided with a shift post, and one end of the unlocking rod of the lower locking device is provided with a sliding groove that cooperates with the shift post, and the shift fork drives the unlocking rod to rotate through the shift post, and the lower locking device rotates accordingly, and a lock pin that cooperates with the lower locking device is provided on the door leaf.

[0009] Among them, the driving component is used to drive the output end gear to rotate, and drives the door leaf to move through the rack. At the same time, the roller on the limiting component rotates in the rolling groove on the door leaf to prevent the output end gear and the rack from disengaging; when the door leaf moves to the closed position, the locking pin enters the lower locking device and drives the lock fork 2211 in the lower locking device to rotate. The output end gear is blocked and stops rotating after the door leaf is closed. The driving component housing rotates in the opposite direction relative to the motor shaft of the driving component, driving the shift column on the shift fork to slide in the sliding groove of the unlocking rod, and the unlocking rod drives the ratchet in the lower locking device 222 to rotate toward the side of the lock fork 2211, and limits the lock fork, thereby limiting the lock pin, and the door leaf is locked.

[0010] Furthermore, the linkage locking device includes an upper locking device arranged on the upper part of the vehicle body, the upper locking device is connected to the lower locking device through a linkage rod, the upper locking device and the lower locking device act synchronously, and the upper locking device and the lower locking device have the same structure.

[0011] Furthermore, the lower locking device includes a pawl fixedly mounted on the linkage rod, a lock fork installed on the vehicle body for cooperating with the lock pin, and the other end of the unlocking rod is also fixedly mounted on the linkage rod; the linkage rod, the unlocking rod, and the pawl rotate synchronously; when the shift fork drives the unlocking rod to rotate through the shift column, the pawl rotates synchronously, and the pawl limits the lock fork, thereby limiting the lock pin, and the door leaf is locked, and the integrated design of the driving mechanism and the linkage locking mechanism is realized through the shift fork structure.

[0012] Furthermore, guide devices are provided on the vehicle body above and below the door leaf, and the guide devices include guide rails installed on the vehicle body and several guide roller assemblies installed on the door leaf; the guide roller assemblies include roller mounting seats fixedly installed on the door leaf, guide rollers installed on the roller mounting seats, and several guide rollers roll in the guide rails to guide the movement of the door leaf. The setting of the guide device can achieve the reliability of movement, guidance and locking of the large-opening door system.

[0013] Furthermore, the guide rail is an integrated full-length rail, and is provided with a plurality of plug-pull section bends, the same number as the guide roller assemblies, wherein the front end bend and the rear end bend are complete bends, which are used to provide complete guide constraints for the plug-pull movement of the door leaf; during the door closing process, the guide roller moves with the door leaf from the straight track into the corresponding bend, and by adopting an integrated multi-point synchronous guide rail structure, in conjunction with multiple groups of roller assemblies on the door leaf, the reliability of the movement, guidance, and locking of the large-opening door system is improved, and a locking constraint point is provided for the door leaf.

[0014] Furthermore, there is a height difference between the rear end curve and the straight road in front of it, and the height of the front end guide roller assembly corresponds to the rear end curve. The front end guide roller assembly passes through the rear end curve smoothly, and the rear end guide roller assembly is constrained by the rear end curve when passing through the rear end curve.

[0015] Furthermore, the multiple-section plug-section curves on the guide rail are designed with unequal spacing between each curve, so that when closing the door, multiple guide rollers enter the corresponding curves synchronously, so that the door leaf can maintain accurate guidance before moving into position.

[0016] Furthermore, a floating bearing device is provided under the door leaf, and the floating bearing device includes a bearing trolley floatingly provided under the door leaf, a bearing guide rail fixedly installed on the vehicle body, and rollers on the bearing trolley are located in the bearing guide rail and move along the bearing guide rail. The bearing and movement are achieved by the bearing trolley provided at the bottom, thereby improving the reliability of the bearing mechanism and saving space on the top of the vehicle body.

[0017] Furthermore, the floating supporting device includes a rocker arm with an overall design of a curved structure, one end of the rocker arm is rotatably connected to the supporting trolley through a first rotating shaft, and the other end is rotatably connected to the door leaf through a second rotating shaft. The rocker arm can realize the swing of the door leaf in the X and Y directions to adapt to the movement of the plug section.

[0018] Furthermore, a centripetal spherical bearing is provided between the rocker arm and the first rotating shaft to adapt to the deflection of the rocker arm direction, and can adapt to large-sized door leaves and guide rails and long-distance movement.

[0019] Beneficial effects: Compared with the prior art, the technical solution of the present invention has the following significant technical effects:

[0020] The interlocking locking device of the present invention completes the locking action of the plug section through the relative movement of the driving component itself in the driving device. Compared with the known integrated driving and locking device, the cooperation of the lock fork and the lock pin can provide a more stable locking force for large-opening plug doors, ensuring the stability and safety of the door operation. The fixed installation of the motor is also more conducive to the stable transmission of power. For large-sized doors with large openings, this locking device does not require additional locking points to ensure the reliable locking of the door.

[0021] The guide system of this invention utilizes an integrated, multi-point synchronous guide mechanism. Furthermore, this layered design, coupled with multiple guide roller assemblies on the door leaf, ensures reliable guidance for even large door leaves. Compared to existing plug-and-sliding door guides, this invention significantly simplifies the door guide structure and reduces the weight of the door system.

[0022] The floating bearing device in the present invention is arranged at the lower part of the vehicle door. Compared with the known Sierra door bearing structure, it greatly reduces the space and mechanism mass of the upper part of the vehicle door, improves the bearing and movement reliability of the large-opening door system, reduces the motor operating load, and is more energy-saving and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a front view of the large-opening sliding plug door system with integrated drive and locking according to the present invention;

[0024] Figure 2 Schematic diagram of the structure of the guide rail in the guide device;

[0025] Figure 3 This is an assembly drawing of the guide rail and guide roller assembly in the guide device;

[0026] Figure 4 Schematic diagram of the structure of the drive and lock integrated device of the present invention;

[0027] Figure 5 for Figure 4 A partial enlarged view of

[0028] Figure 6 for Figure 4 A partial schematic diagram of the middle rack transmission structure;

[0029] Figure 7 It is a structural schematic diagram of the floating bearing device in the present invention;

[0030] Figure 8 is a cross-sectional view of the floating bearing device of the present invention;

[0031] Figure 9 It is a structural diagram of the rack and pinion transmission and floating speed reduction device in the present invention. DETAILED DESCRIPTION

[0032] The technical solution of the present invention is described in detail below in conjunction with specific implementation methods and the accompanying drawings.

[0033] like Figures 1 to 8 As shown, the drive and locking integrated large-opening sliding door system of the present invention involves the following components: a guide device 1, a guide rail 11, a front end curve 1101, a middle curve 1102, a rear end curve 1103, a guide roller assembly 12, a roller 1201, a roller mounting seat 1202, a drive and locking integrated device 2, a drive device 21, a drive motor 211, a reducer assembly 212, an output end gear 2121, a shift fork 213, and a shift column. 2131, limit assembly 214, roller 2141, linkage locking device 22, upper locking device 221, lower locking device 222, linkage rod 223, locking fork 2211, pawl 2212, unlocking rod 224, floating bearing device 2243, bearing trolley 31, roller 311, bearing guide rail 32, rocker arm 33, first rotating shaft 34, second rotating shaft 35, centripetal spherical bearing 36, door leaf 4, rack 41, locking pin 42.

[0034] like Figure 1 As shown, the large-opening Sierra door system with integrated drive and locking of the present invention includes a guide device 1 arranged on the vehicle body above and below the door leaf 4, an integrated drive and locking device 2 installed on the vehicle body on one side of the door leaf 4, a floating supporting device 3 arranged below the door leaf 4, and the door leaf 4.

[0035] like Figure 2 and Figure 3 As shown, the guide device 1 comprises a guide rail 11 and a guide roller assembly 12. The guide rail 11 is mounted on the vehicle body, while a plurality of guide roller assemblies 12 are mounted on the door leaf 4. Each guide roller assembly 12 comprises a guide roller 1201 and a roller mounting base 1202. The roller mounting base 1202 is fixedly mounted on the door leaf 4, and the guide rollers 1201 are mounted on the roller mounting base 1202. The guide rollers 1201 roll within the guide rail 11, guiding the sliding motion of the door leaf 4. The guide rollers 1201 in the guide roller assembly 12 can roll within the straight track and curved track grooves within the guide rail 11.

[0036] In this embodiment, the guide rail 11 is a one-piece, continuous track equipped with multiple curved sections, equal in number to the number of guide roller assemblies 12. Corresponding guide roller assemblies 12 are installed on the door leaf 4. The front curve 1101 and rear curve 1103 are complete curves, providing complete guidance and restraint for the sliding movement of the door leaf 4. The intermediate curve 1102 is passable, allowing the front guide roller 1201 to pass smoothly through it. The intermediate guide roller 1201 moves with the door leaf 4 and enters the corresponding intermediate curve 1102. Each curve provides a locking and restraining point for the door leaf 4 after closing.

[0037] Among them, the rear end curve 1103 is a layered design, and there is a height difference between it and the straight road in front of it. The height of the front end guide roller assembly 12 corresponds to the rear end curve 1103. The front end guide roller assembly 12 can pass smoothly when passing through the rear end curve 1103, and the rear end guide roller assembly 12 is constrained by the curve when passing through the rear end curve 1103.

[0038] In this embodiment, the multiple plug-type curves on the guide rail 11 are designed with unequal spacing between each curve to ensure that multiple guide rollers 1201 enter the corresponding curve synchronously when closing the door. This allows the door leaf 4 to maintain accurate guidance before moving into position. Specifically: the multiple plug-type curves on the guide rail 11 are designed with unequal spacing, and the multiple guide rollers 1201 on the door leaf 4 are also designed with unequal spacing. The distance between two adjacent curves corresponds to the distance between the two corresponding guide rollers 1201. The purpose is to prevent the guide rollers 1201 from entering incorrect positions. If an equal spacing structure is used, multiple guide rollers 1201 may enter the wrong curve in advance. When an unequal spacing structure is used, when the front guide roller 1201 intends to enter the wrong curve position, it cannot enter the wrong curve position due to the unequal spacing between the rear rollers and the curve spacing, thereby restricting the front roller from moving to the correct position. Two identical guide devices 1 are used at the upper and lower positions of the door leaf 4 to provide guide and locking restraint points for the upper and lower positions of the door leaf 4 respectively.

[0039] In this solution, the wide-opening plug door features integrated, multi-point synchronized guide rail mechanisms at the upper and lower sections, fixed to the vehicle body. Multiple sets of guide roller assemblies are located at the upper and lower sections of the corresponding door leaf, securely connected to the leaf. Each upper and lower guide mechanism features multiple curves, corresponding to the same number of guide roller assemblies. This ensures reliable movement, guidance, and locking of the wide-opening door system, providing locking restraint points for the leaf.

[0040] like Figure 4-6As shown, the integrated drive and locking device 2 includes a drive device 21 and a linkage locking device 22, both of which are fixedly mounted on the vehicle body. The linkage locking device 22 is connected to the drive device 21 via a shift fork 213. The drive device 21 includes a drive assembly, a shift fork 213, and a limit assembly 214. The upper end housing of the drive assembly is fixedly connected to the shift fork 213, and the output end gear 2121 and the limit assembly 214 are sleeved on the lower end output shaft. In this embodiment, the drive assembly adopts a drive motor 211 and a reducer assembly 212. The upper end housing of the drive motor 211 is fixedly connected to the shift fork 213, the lower end motor output shaft is rotationally connected to the input shaft of the reducer assembly 212, and the limit assembly 214 is rotationally connected to the output shaft of the reducer assembly 212, forming a floating structure. The output end gear 2121 of the reducer assembly 212 and the rack 41 fixedly connected to the door leaf 4 form a gear meshing. The limit assembly 214 is equipped with a roller 2141, which fits behind the rack 41 and rolls within the rolling groove formed between the rack 41 and the door leaf 4. The roller 2141 is in constant contact with the rear of the rack 41, ensuring that the gear and rack remain properly constrained and prevent disengagement during linear and pull-action movements of the door leaf. The floating structure of the reducer assembly 212 and the limit assembly 214 enable the reducer assembly 212 to follow the pull-action movement of the door leaf 4 and ensure that the output gear 2121 and rack 41 remain engaged.

[0041] The linkage locking device 22 includes an upper locking device 221, a lower locking device 222, and a linkage rod 223. The upper locking device 221 is arranged on the upper half of the vehicle body, and the lower locking device 222 is arranged on the lower half of the vehicle body. The upper locking device 221 and the lower locking device 222 have similar structures and the same principles. They are connected by the linkage rod 223 and can move synchronously. The lock pin 42 moves with the door leaf 4. The linkage locking device 22 is arranged on the vehicle body and is relatively fixed. When closing and locking the door, the door leaf 4 moves, and the lock pin 42 on it contacts and drives the lock fork 2211 to rotate. The lock fork 2211 is then limited by the pawl 2212, thereby limiting the lock pin 42, that is, the door leaf 4 is limited. The locking device realizes the locking and unlocking functions by the movement of the lock pin 42 on the door leaf 4, which drives the lock fork 2211 and pawl 2212 in the locking device. An unlocking rod 224 is provided below the locking device, and the linkage rod 223, the unlocking rod 224, and the upper and lower pawls 2212 are all fixedly connected and can rotate synchronously.

[0042] The lower locking device 222 includes an unlocking lever 224, a locking fork 2211, and a pawl 2212. The unlocking lever 224 is positioned below the lower locking device 222. A shift fork 213 is provided with a shift post 2131. One end of the unlocking lever 224 of the lower locking device 222 is provided with a sliding groove that engages with the shift post 2131. The shift fork 213 drives the unlocking lever 224 to rotate via the shift post 2131. The door leaf 4 is provided with a lock pin 42 that engages with the lower locking device 222. More specifically, the pawl 2212 is fixedly mounted on the linkage rod 223. The locking fork 2211 is fixedly mounted on the vehicle body to engage with the lock pin 42. The other end of the unlocking lever 224 is also fixedly mounted on the linkage rod 223. The linkage rod 223, the unlocking rod 224, and the pawl 2212 rotate synchronously; when the shift fork 213 drives the unlocking rod 224 to rotate through the shift column 2131, the pawl 2212 rotates synchronously, and the rotation of the pawl 2212 limits the lock fork 2211, thereby limiting the lock pin 42, and the door leaf 4 is locked.

[0043] The driving assembly drives the output end gear 2121 to rotate, and drives the door leaf 4 to move through the rack 41; when the door leaf 4 moves to the closed position, the output end gear 2121 stops rotating, and the driving assembly housing rotates in the opposite direction relative to the motor shaft of the driving assembly, driving the shift post 2131 on the shift fork 213 to slide in the sliding groove of the unlocking rod 224, and the unlocking rod 224 drives the pawl in the lower locking device 222 to rotate toward the side of the lock fork 2211, and limits the lock fork, thereby limiting the lock pin 42, and the door leaf 4 is locked.

[0044] When the door leaf 4 moves to the closed position, the lock pin 42 enters the lower locking device 222 and drives the lock fork 2211 in the lower locking device 222 to rotate, and the output end gear 2121 is blocked and stops rotating after the door leaf 4 is closed.

[0045] In this solution, the drive unit is fixedly connected to the vehicle body and drives the door leaf through the meshing transmission of the gear and rack. A floating deceleration mechanism is provided to improve the door movement speed and adapt to the linear and plug-pull movements of the door leaf. The drive unit and the linkage locking device are connected by a shift fork 213. When closing the door, the drive motor shaft rotates forward. After the lock fork reaches the locked position, the drive motor shaft stops, and the motor housing rotates reversely relative to the motor shaft, driving the pawl to constrain the lock fork in the locked position to complete the plug-pull movement of the door. When opening the door, because the door leaf is constrained by the door lock, the motor shaft is blocked from reversing. The motor housing rotates relative to the motor shaft, driving the pawl out of the locked position. After the pawl reaches the limit pin, the drive structure constraint is released, the motor housing stops, and the motor shaft reverses, driving the door leaf to open.

[0046] The integrated drive and lock mechanism 2 utilizes a shift fork structure to integrate the drive and linkage locking mechanisms. Locking and unlocking are achieved through the movement of the drive motor shaft and housing. The drive function is achieved through rotation of the motor shaft, while the locking function is achieved through rotation of the motor housing, improving the locking stability of doors with wide openings.

[0047] like Figure 7 and 8 As shown, the floating carrying device 3 includes a carrying trolley 31, a carrying guide rail 32, and a rocker arm 33. The carrying trolley 31 is floatingly set below the door leaf 4, and the carrying guide rail 32 is fixedly installed on the car body. The roller 311 on the carrying trolley 31 is located in the carrying guide rail 32 and can move along the carrying guide rail 32.

[0048] In this embodiment, the rocker arm 33 is designed as a curved structure as a whole. One end of the rocker arm 33 is rotatably connected to the carrying trolley 31 through a first rotating shaft 34, and the other end is rotatably connected to the door leaf 4 through a second rotating shaft 35. The rotating connection structure at both ends adapts to the movement of the door leaf in two directions when the door leaf 4 is pulled.

[0049] In this embodiment, a radial spherical bearing 36 is provided between the rocker arm 33 and the first rotating shaft 34 to accommodate the directional deflection of the rocker arm 33. The floating design of the carrier trolley 31 can accommodate manufacturing and installation errors of large and extra-long guide rails, as well as deformation caused by gravity of large door panels, thereby reducing operational jamming and ensuring synchronized and reliable movement.

[0050] In this solution, a floating support structure is positioned beneath the vehicle body. A swing arm within the support structure is pivotally connected to the support trolley at one end via a shaft and pivotally connected to the door leaf at the other end via a ring. The support rails are fixed to the vehicle body, and rollers within the support trolley rotate within the rails. The swing arm allows the door leaf to oscillate in the X and Y directions to accommodate the movement of the stopper section. The support trolley is a floating design with internal radial spherical bearings to accommodate large door leaves and rails, as well as long-distance movement.

[0051] The floating load-bearing device realizes load-bearing and movement through the load-bearing trolley set at the bottom, and realizes the pulling action through the rocker arm, which improves the reliability of the load-bearing mechanism and saves space on the top of the vehicle body.

[0052] like Figure 9 As shown, during the door opening and closing process, the door leaf undergoes both linear and sliding motions, corresponding to the straight and curved paths of the guide rails, respectively. During the sliding motion, the door leaf undergoes a combined horizontal and vertical motion relative to the drive device, as shown. The rack and pinion structure is a key component for motion transmission. The design of the floating reducer assembly 212 (one end of which rotates about its input shaft) enables the sliding motion of the door leaf. The structure of the limit assembly 214 and the rack ensures that the rack and pinion remain properly engaged during the sliding motion of the door leaf (the reducer assembly 212 rotates) and prevents disengagement.

[0053] When closing the door, the driving motor 211 drives the output end gear 2121 in the reducer assembly 212 to rotate, and drives the door leaf 4 to move through the rack 41. At the same time, the roller 2141 on the limit assembly 214 rotates in the rolling groove on the door leaf 4 to prevent the output end gear 2121 and the rack 41 from being separated; the lock pin 42 moves with the door leaf 4. When the door leaf 4 moves to the closed position, the lock pin 42 contacts the lock fork 2211 and drives the lock fork 2211 to rotate, and the output end gear 2121 is locked on the lock pin 42. , the transmission between the drive motor 211 and the reducer assembly 212 is forced to stop. The housing of the drive motor 211 rotates in the opposite direction relative to the motor shaft, driving the shift post 2131 on the shift fork 213 to slide within the sliding groove of the unlocking lever 224. The unlocking lever 224 drives the pawl 2212 to rotate, securing the lock fork 2211 and completing the locking. The distance between the shift fork 213 and its rotation center is greater than the distance between the unlocking lever 224 and its rotation center, which can amplify the torque and increase the reliability of locking and unlocking. During the closing process, the guide roller 1201 moves from the straight track position to the corresponding curved position with the movement of the door leaf, and the floating bearing device 3 moves from the open position to the closed position.

[0054] When opening the door, since the lock fork 2211 is in the locked position, the rotation of the drive motor 211 shaft is blocked, and the motor housing rotates in the opposite direction, driving the shift post 2131 on the shift fork 213 to rotate the unlocking lever 224. The unlocking lever 224 drives the pawl 2212 to reverse until it reaches the limit position. The motor housing then stops rotating, and the motor shaft of the drive motor 211 rotates, driving the lock pin 42 in the door leaf 4 to exit the lock fork 2211, completing the unlocking and door opening action. During the door opening process, the guide roller 1201 moves from the curved position to the straight track position along with the movement of the door leaf, and the floating bearing device 3 moves from the closed position to the open position.

Claims

1. A large-opening sliding plug door system with integrated drive and locking, characterized by: The invention comprises a door leaf (4), a driving and locking integrated device (2) mounted on a vehicle body on one side of the door leaf (4), wherein the driving and locking integrated device (2) comprises a driving device (21) and a linkage locking device (22) connected to the driving device (21); The driving device (21) comprises a driving motor (211), a speed reducer assembly (212) and a shift fork (213), wherein the upper end housing of the driving motor (211) is fixedly connected to the shift fork (213); The reducer assembly (212) adopts a floating structure, and its input shaft is rotatably connected to the motor output shaft at the lower end of the driving motor (211). The reducer assembly (212) rotates around the motor output shaft of the driving motor (211), so that the reducer assembly (212) can move along with the door leaf (4). An output end gear (2121) is fixedly sleeved on the output shaft of the reducer assembly (212) and is rotatably connected to the limit assembly (214). The output end gear (2121) and the rack (41) fixedly connected to the door leaf (4) form a gear meshing. The limiting assembly (214) is provided with a roller (2141), which is always in contact with the rear of the rack (41) and rolls in a rolling notch formed between the rack (41) and the door leaf (4), so that the output end gear (2121) and the rack (41) maintain correct meshing and do not disengage when the door leaf (4) is pulled. The linkage locking device (22) comprises a lower locking device (222) arranged at the lower half of the vehicle body, a shift fork (213) provided with a shift post (2131), an unlocking rod (224) of the lower locking device (222) having a sliding groove matched with the shift post (2131) at one end thereof, the shift fork (213) driving the unlocking rod (224) to rotate via the shift post (2131), and a ratchet (2212) in the lower locking device (222) rotates accordingly, and a lock pin (42) matched with the lower locking device (222) is provided on the door leaf (4).

2. The large-opening sliding plug door system with integrated drive and locking according to claim 1 is characterized in that: The linkage locking device (22) comprises an upper locking device (221) arranged on the upper half of the vehicle body. The upper locking device (221) is connected to the lower locking device (222) via a linkage rod (223). The upper locking device (221) and the lower locking device (222) act synchronously. The upper locking device (221) and the lower locking device (222) have the same structure.

3. The large-opening sliding plug door system with integrated drive and lock according to claim 2 is characterized in that: The lower locking device (222) includes a pawl (2212) fixedly sleeved on the linkage rod (223), a lock fork (2211) mounted on the vehicle body for cooperating with the lock pin (42), and the other end of the unlocking rod (224) is also fixedly sleeved on the linkage rod (223); the linkage rod (223), the unlocking rod (224), and the pawl (2212) rotate synchronously; When the shift fork (213) drives the unlocking rod (224) to rotate via the shift column (2131), the ratchet (2212) rotates synchronously, and the ratchet (2212) limits the locking fork (2211), thereby limiting the locking pin (42), and the door leaf (4) is locked.

4. The large-opening sliding plug door system with integrated drive and lock according to claim 1 is characterized in that: A guide device (1) is provided on the vehicle body above and below the door leaf (4), and the guide device (1) comprises a guide rail (11) mounted on the vehicle body and a plurality of guide roller assemblies (12) mounted on the door leaf (4); The guide roller assembly (12) comprises a roller mounting seat (1202) fixedly mounted on the door leaf (4), and a guide roller (1201) mounted on the roller mounting seat (1202). The guide rollers (1201) roll in the guide rail (11) to guide the movement of the door leaf (4).

5. The large-opening sliding plug door system with integrated drive and lock according to claim 4 is characterized in that: The guide rail (11) is an integrated, continuous rail, and is provided with a plurality of plug-pull section bends, the number of which is the same as that of the guide roller assembly (12), wherein the front end bend (1101) and the rear end bend (1103) are complete bends, and are used to provide complete guide constraints for the plug-pull movement of the door leaf (4); During the door closing process, the guide roller (1201) moves along with the door leaf (4) from the straight track into the corresponding curve.

6. The large-opening sliding plug door system with integrated drive and lock according to claim 5, characterized in that: A height difference is provided between the rear end curve (1103) and the straight road in front thereof. The height of the front end guide roller assembly (12) corresponds to that of the rear end curve (1103). The front end guide roller assembly (12) passes smoothly through the rear end curve (1103), while the rear end guide roller assembly (12) is constrained by the rear end curve (1103) when passing through the rear end curve (1103).

7. The large-opening sliding plug door system with integrated drive and lock according to claim 5, characterized in that: The multiple plug-section curves on the guide rail (11) are designed with unequal spacing between each curve, so that when the door is closed, multiple guide rollers (1201) enter the corresponding curves synchronously.

8. The large-opening sliding plug door system with integrated drive and lock according to claim 1, characterized in that: A floating bearing device (3) is provided below the door leaf (4), and the floating bearing device (3) comprises a bearing trolley (31) floatingly provided below the door leaf (4), a bearing guide rail (32) fixedly mounted on the trolley body, and a roller (311) on the bearing trolley (31) located in the bearing guide rail (32) and moving along the bearing guide rail (32).

9. The large-opening sliding plug door system with integrated drive and lock according to claim 8, characterized in that: The floating bearing device (3) includes a swing rod (33) designed as a curved structure. One end of the swing rod (33) is rotationally connected to the bearing trolley (31) through a first rotating shaft (34), and the other end is rotationally connected to the door leaf (4) through a second rotating shaft (35).

10. The large-opening sliding plug door system with integrated drive and lock according to claim 9, characterized in that: A centripetal joint bearing (36) is provided between the swing rod (33) and the first rotating shaft (34) to accommodate the deflection of the swing rod (33).

Images