An electric single sliding door system

Abstract

The application discloses a kind of electric single-sliding door systems, it is related to highway traffic vehicle field, rail transit field, including door leaf and bearing drive mechanism, the bearing drive mechanism is connected with door leaf transmission and drives door leaf to do sliding motion, the outer wall of the door leaf is provided with first sealing strip and second sealing strip, and first sealing strip is set along the circumferential direction of door opening, the second sealing strip is set to the outside of door opening upright column, and locking assembly is set on the door leaf.The application is provided with double-layer sealing by first sealing strip and second sealing strip, and by the locking assembly is driven door leaf to move to the inside of vehicle when locking, so that two foamed sealing strips obtain more sufficient compression lap quantity, to improve the waterproof, dustproof, smoke-proof and sound insulation performance of vehicle door, by locking assembly, bearing drive mechanism is locked and unlocked mechanism is cooperated with multiple locking settings, so that door leaf is locked more firmly, and the anti-impact and anti-vibration ability is stronger.

Description

Technical Field

[0001] This invention relates to the fields of highway vehicles and rail transit, specifically to an electric single-opening sliding door system. Background Technology

[0002] The electric single-opening sliding door system is an automatic door device used in highway vehicles, urban buses, and rail transit vehicles. It mainly consists of a load-bearing drive mechanism, a door frame, a door leaf, sealing strips, a lower slide rail assembly, a door lock device, and an emergency unlocking valve. The term "sliding" refers to the door leaf moving laterally outward along the vehicle body when opening, and then moving longitudinally along the vehicle body. When closing, it moves in the opposite direction and is pulled inward, so that the outer surface of the closed door leaf is flush with the outer surface of the vehicle body. This door system has only one door leaf, driven by a single load-bearing drive mechanism on one side. Compared with traditional concealed doors and external doors, it has better sealing performance and a flat and beautiful appearance.

[0003] The system uses a load-bearing drive mechanism as its core power source, which is fixed to the top of the vehicle body via a mounting bracket. One end of the carrying frame is connected to the mechanism's slide cylinder, and the other end is fixed to the door leaf. During operation, the DC brushless motor converts the rotational motion into linear motion through a lead screw and nut pair, driving the carrying frame and door leaf to move. Guided by the straight section and the sliding section of the upper slide rail, the door leaf generates a composite motion of longitudinal translation and lateral sliding, realizing the door opening by first sliding out and then sliding, or the reverse sliding out and then pulling in to close. The lower slide rail assembly assists in guiding and supporting the door leaf to prevent it from sinking. In an emergency, the door can be unlocked and opened by operating the emergency unlocking valve.

[0004] However, existing electric single-opening sliding door systems still have some areas for improvement in practical applications. First, it is difficult to balance aesthetics and sealing in the sealing structure: when using wide-edge rubber strips for external sealing, it has a certain impact on the overall appearance of the door; when using internal sealing, the compression of the rubber strip is relatively limited due to the limitations of the vehicle body structure, which may lead to light transmission and rain leakage under certain working conditions. Second, the lower part often uses a lower control arm for guidance, which is more prone to abnormal noise and jamming during long-term vehicle operation, resulting in a relatively high maintenance frequency. If a pillar structure is used instead, it will increase the space occupied in the vehicle interior to a certain extent. Summary of the Invention

[0005] Therefore, the purpose of this invention is to provide an electric single-opening sliding door system to solve the technical problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an electric single-opening sliding door system, comprising a door leaf and a load-bearing drive mechanism, wherein the load-bearing drive mechanism is connected to the door leaf and drives the door leaf to perform a sliding motion, wherein the outer wall of the door leaf is provided with a first sealing strip and a second sealing strip, the first sealing strip being arranged along the circumference of the door opening, the second sealing strip being arranged on the outer side of the door opening pillar, and a locking component being provided on the door leaf, wherein the locking component locks the door leaf and drives the door leaf to move inward toward the vehicle when the door leaf is closed.

[0007] By adopting the above technical solution, the double-layer sealing of the first and second sealing strips, and with the help of the locking assembly, the door leaf is moved 5 to 10 mm inward by the locking sleeve when locked, so that the two foam sealing strips can achieve a more sufficient compression overlap, thereby improving the waterproof, dustproof, smokeproof and sound insulation performance of the door. The door system can maintain a stable seal even at high vehicle speeds. It is suitable for highway and rail vehicles. Through the multi-locking setting of the locking assembly and the locking and unlocking mechanism at the load-bearing drive mechanism, the locking sleeve is driven by a small motor through the linkage to complete the locking, and the energy storage spring and the second cylinder provide emergency disengagement, making the door leaf lock more secure, more resistant to impact and vibration, and able to achieve multi-lock linkage and rapid unlocking in emergency situations, taking into account both the locking reliability of high-speed driving and the ease of operation in emergency evacuation.

[0008] The present invention is further configured such that the first sealing strip includes a snap-fit ​​base and a cavity connected to the snap-fit ​​base, the snap-fit ​​base being snapped into a slot in the circumferential direction of the door opening, and the cavity extending along the length direction of the first sealing strip.

[0009] Preferably, the snap-fit ​​base and the door opening slot are engaged to facilitate the quick positioning and assembly of the first sealing strip, and the cavity makes it easier for the first sealing strip to deform and fit the sealing surface when it is under pressure.

[0010] The present invention is further configured such that the body of the second sealing strip is provided with elastic ears and mounting holes, and the second sealing strip is fixed to the outer side of the door opening post by fasteners inserted into the mounting holes.

[0011] Preferably, the second sealing strip can be firmly fixed to the door post by means of fasteners inserted into the mounting holes. The elastic lugs increase the compressibility of the second sealing strip and reduce its rebound force, making it easier to close the door.

[0012] The invention is further configured such that the locking assembly includes a second cylinder, an energy storage spring, a locking sleeve, a connecting rod, and a small motor. The small motor is connected to the locking sleeve via the connecting rod, and the second cylinder and the energy storage spring are respectively connected to the locking sleeve.

[0013] Preferably, the locking sleeve is driven by a small motor via a connecting rod, and the second cylinder and the energy storage spring work together to reset it, so that the locking assembly is compact and the locking and unlocking process is stable and controllable.

[0014] The invention is further configured such that the lock sleeve has a wedge-shaped surface, and the door leaf is provided with a mating part corresponding to the lock sleeve. When the small motor drives the lock sleeve to extend via the connecting rod, the lock sleeve engages with the mating part via the wedge-shaped surface, thereby moving the door leaf 5 to 10 mm toward the inside of the vehicle.

[0015] Preferably, the lock sleeve engages with the mating part via a wedge-shaped surface, and when extended, it pulls the door leaf inwards by mm, thereby increasing the compression overlap between the first sealing strip and the second sealing strip.

[0016] The present invention is further configured such that the energy storage spring abuts between the second cylinder and the locking sleeve, and when the second cylinder is unloaded, the energy storage spring drives the locking sleeve to reset and retract.

[0017] Preferably, when the second cylinder is unloaded, the energy storage spring drives the locking sleeve to reset and retract, so that the locking assembly can still automatically disengage under the condition of air shortage or power failure.

[0018] The present invention is further configured such that the load-bearing drive mechanism includes a drive motor and a mounting bracket, the drive motor is mounted on the mounting bracket and is connected to the door leaf via a lead screw and nut pair, and the mounting bracket is fixed to the vehicle body.

[0019] Preferably, the drive motor smoothly outputs linear power through the lead screw and nut pair, and the mounting bracket fixes the entire drive mechanism to the vehicle body, making the power transmission smooth and the whole assembly easy to install and carry.

[0020] The present invention is further configured such that a touch button is provided on the door leaf, and the touch button is electrically connected to the door controller, and the door controller is respectively connected to the load-bearing drive mechanism and the locking assembly.

[0021] Preferably, the door opening and closing command is input to the door controller via a touch button, and the door controller uniformly controls the load-bearing drive mechanism and locking components to realize integrated electric opening and closing operation of the door leaf.

[0022] The present invention is further configured such that the bearing drive mechanism is provided with an unlocking mechanism, and the unlocking mechanism includes a first cylinder, a rocker arm, a rotating plate, a slide lock, a locking fork and a cam. The output end of the first cylinder is connected to the rocker arm, and the rocker arm abuts against the rotating plate. The rotating plate is connected to the cam and the slide lock respectively. The locking fork is disposed on the cam.

[0023] Preferably, the first cylinder drives the rotating plate via a rocker arm, and the rotating plate synchronously drives the locking fork on the cam and the slide lock to move, so that the components of the unlocking mechanism are linked and highly integrated.

[0024] The invention is further configured such that the first cylinder drives the rocker arm to swing and drives the rotating plate to rotate, and the rotating plate drives the locking fork to rotate and disengage from the locking pin via the cam, and simultaneously pushes the slide lock to move.

[0025] Preferably, when the rotating plate rotates, the cam drives the locking fork to disengage from the locking pin and simultaneously pushes the slide lock to move, so that the two locking constraints can be released simultaneously at one time.

[0026] In summary, the present invention has the following main beneficial effects:

[0027] 1. This invention uses a double-layer sealing system with a first sealing strip and a second sealing strip. When locked, the locking assembly moves the door leaf 5 to 10 mm into the vehicle through the locking sleeve, allowing the two foam sealing strips to achieve a more sufficient compression overlap. This improves the waterproof, dustproof, smokeproof and soundproof performance of the door, enabling the door system to maintain a stable seal even at high vehicle speeds. It is suitable for highway and rail vehicles.

[0028] 2. This invention employs a multi-locking mechanism that combines locking components and a locking and unlocking mechanism at the load-bearing drive mechanism. A small motor drives the lock sleeve via a connecting rod to complete the locking, while an energy storage spring and a second cylinder provide emergency disengagement. This makes the door lock more secure, more resistant to impact and vibration, and enables multi-lock linkage and rapid unlocking in emergency situations. It balances the reliability of locking during high-speed driving with the ease of operation during emergency evacuation.

[0029] 3. This invention, through the integrated load-bearing drive mechanism, touch button, and lower self-guiding guide wheel slide rail, enables the door leaf to smoothly complete the sliding action along a predetermined trajectory with low operating noise. It also facilitates interaction with the vehicle via a communication interface, realizing multiple anti-pinch and touch-based automatic door opening and closing. At the same time, it simplifies the overall structure, reduces the weight of the door leaf, lowers the difficulty of installation and maintenance, and improves the adaptability of the door system to operating conditions and passenger comfort. Attached Figure Description

[0030] Figure 1 This is a three-dimensional schematic diagram of the entire invention;

[0031] Figure 2 This is a schematic diagram showing the position of the locking component of the present invention;

[0032] Figure 3 This is a schematic diagram of the locking component structure of the present invention;

[0033] Figure 4 This is a schematic diagram of the top surface of the locking component of the present invention;

[0034] Figure 5 This is a schematic diagram of the shape of the first sealing strip of the present invention;

[0035] Figure 6This is a schematic diagram of the shape of the second sealing strip of the present invention;

[0036] Figure 7 This is a schematic diagram of the load-bearing drive mechanism of the present invention;

[0037] Figure 8 This is a schematic diagram of the unlocking mechanism of the present invention;

[0038] Figure 9 For the present invention Figure 8 Enlarged view of point A in the middle.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1. Door leaf; 2. Load-bearing drive mechanism; 20. Drive motor; 21. Mounting bracket; 22. Unlocking mechanism; 220. First cylinder; 221. Rocker arm; 222. Rotating plate; 223. Slide lock; 224. Locking fork; 225. Cam; 5. First sealing strip; 50. Snap-fit ​​base; 51. Cavity; 6. Second sealing strip; 60. Elastic small ear; 61. Mounting hole; 7. Touch button; 8. Locking assembly; 80. Second cylinder; 81. Energy storage spring; 82. Lock sleeve; 83. Connecting rod; 85. Small motor. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0042] The embodiments of the present invention will now be described.

[0043] First embodiment: An electric single-opening sliding door system, please refer to Figures 1-9The system includes a door leaf 1 and a load-bearing drive mechanism 2. The load-bearing drive mechanism 2 is connected to the door leaf 1 and drives the door leaf 1 to perform a sliding motion. The outer wall of the door leaf 1 is provided with a first sealing strip 5 and a second sealing strip 6. The first sealing strip 5 is arranged around the circumference of the door opening, and the second sealing strip 6 is arranged on the outer side of the door opening pillar. The door leaf 1 is provided with a locking assembly 8. When the door leaf 1 is closed, the locking assembly 8 locks the door leaf 1 and moves the door leaf 1 towards the inside of the vehicle. Through the double-layer sealing of the first sealing strip 5 and the second sealing strip 6, and with the help of the locking assembly 8, the door leaf is moved 5 to 10 mm towards the inside of the vehicle by the lock sleeve 82 when locked, so that the two foam sealing strips are more effectively sealed. Sufficient compression overlap improves the waterproof, dustproof, smokeproof, and soundproof performance of the door, ensuring stable sealing even at high vehicle speeds. Suitable for highway and rail vehicles, the door system features a multi-locking mechanism consisting of locking components 8 and load-bearing drive mechanisms 22, with locking and unlocking mechanisms coordinated. A small motor 85 drives the lock sleeve 82 via a connecting rod 83 to complete the locking, while an energy storage spring 81 and a second cylinder 80 provide emergency disengagement. This makes the door lock more robust, impact-resistant, and vibration-resistant, and enables multi-lock linkage and rapid unlocking in emergencies, balancing locking reliability at high speeds with ease of emergency evacuation.

[0044] For details regarding the above embodiments, please refer to [link / reference]. Figure 1 , Figure 2 and Figure 5 , Figure 6 The first sealing strip 5 includes a snap-fit ​​base 50 and a cavity 51 connected to the snap-fit ​​base 50. The snap-fit ​​base 50 is snapped into a slot around the door opening, and the cavity 51 extends along the length of the first sealing strip 5. The snap-fit ​​base 50 and the slot of the door opening make it easy for the first sealing strip 5 to be quickly positioned and assembled. The cavity 51 makes the first sealing strip 5 more easily deformed and fit the sealing surface when it is pressed.

[0045] For details regarding the above embodiments, please refer to [link / reference]. Figure 1 , Figure 2 and Figure 5 , Figure 6 The first sealing strip 5 includes a snap-fit ​​base 50 and a cavity 51 connected to the snap-fit ​​base 50. The second sealing strip 6 has an elastic lug 60 and a mounting hole 61 on its body. The second sealing strip 6 is fixed to the outer side of the door frame by fasteners inserted into the mounting hole 61. The fasteners inserted into the mounting hole 61 can firmly fix the second sealing strip 6 to the door frame. The elastic lug 60 increases the compressibility of the second sealing strip 6 and reduces its rebound force, making it easier to close the door.

[0046] For details regarding the above embodiments, please refer to [link / reference]. Figures 2-4The locking assembly 8 includes a second cylinder 80, an energy storage spring 81, a locking sleeve 82, a connecting rod 83, and a small motor 85. The small motor 85 is connected to the locking sleeve 82 via the connecting rod 83, and the second cylinder 80 and the energy storage spring 81 are respectively connected to the locking sleeve 82. The locking sleeve 82 has a wedge-shaped surface, and the door leaf 1 is provided with a mating part corresponding to the locking sleeve 82. When the small motor 85 drives the locking sleeve 82 to extend via the connecting rod 83, and the locking sleeve 82 engages with the mating part via the wedge-shaped surface, it drives the door leaf 1 to move 5 to 10 mm towards the vehicle. When extending, it drives the door leaf 1 towards the vehicle by 5 to 10 mm, which correspondingly increases the compression overlap between the first sealing strip 5 and the second sealing strip 6. The small motor 85 drives the locking sleeve 82 to move via the connecting rod 83, and the second cylinder 80 and the energy storage spring 81 engage to reset, making the locking assembly 8 compact in layout and stable and controllable in locking and unlocking processes. The locking sleeve 82 engages with the mating part via the wedge-shaped surface.

[0047] For details regarding the above embodiments, please refer to [link / reference]. Figures 2-4 The energy storage spring 81 is abutted between the second cylinder 80 and the locking sleeve 82. When the second cylinder 80 is unloaded, the energy storage spring 81 drives the locking sleeve 82 to reset and retract. When the second cylinder 80 is unloaded, the energy storage spring 81 drives the locking sleeve 82 to reset and retract, so that the locking assembly 8 can still automatically disengage under the condition of gas cut-off or power failure.

[0048] For details regarding the above embodiments, please refer to [link / reference]. Figure 1 , Figure 2 The load-bearing drive mechanism 2 includes a drive motor 20 and a mounting bracket 21. The drive motor 20 is mounted on the mounting bracket 21 and is connected to the door leaf 1 via a screw and nut pair. The mounting bracket 21 is fixed to the vehicle body. The drive motor 20 outputs linear power smoothly via the screw and nut pair. The mounting bracket 21 fixes the entire load-bearing drive mechanism 2 to the vehicle body, making the power transmission smooth and the whole assembly easy to install and bear loads.

[0049] For details regarding the above embodiments, please refer to [link / reference]. Figure 1 , Figure 2 A touch button 7 is provided on the door leaf 1, and the touch button 7 is electrically connected to the door controller. The door controller is controlled and connected to the load-bearing drive mechanism 2 and the locking component 8 respectively. The door opening and closing command is input to the door controller through the touch button 7, and the door controller uniformly controls the load-bearing drive mechanism 2 and the locking component 8 to realize the integrated electric opening and closing operation of the door leaf 1.

[0050] Second embodiment: Please refer to Figures 7-9The difference between Embodiment 2 and Embodiment 1 is that, while retaining the features of Embodiment 1, a cam 225 and a locking fork 224 are added to the bottom of the rotating plate 222. The cam 225 is driven by the rotating plate 222, and the locking fork 224 is mounted on the cam 225 and corresponds to the locking pin. During unlocking, the rotating plate 222 drives the cam 225 to rotate, causing the locking fork 224 to bypass and disengage from the locking pin, thereby releasing the mechanical locking in that direction. This configuration ensures that the unlocking of the locking fork 224 and the rotation of the rotating plate 222 are completed synchronously, making the unlocking action direct and reliable, and avoiding interference and jamming between the locking fork 224 and the locking pin.

[0051] In practical operation, this invention:

[0052] When the door controller receives the door opening command or the touch button 7 is triggered, the drive motor 20 in the load-bearing drive mechanism 2 converts the rotational motion into linear motion through the screw and nut pair, driving the door frame and door leaf 1 to first slide laterally along the vehicle body, and then move longitudinally along the upper slide rail. The lower guide wheel slide rail guides synchronously to suppress the door leaf swaying and sinking, until the door leaf 1 completely avoids the outer surface of the vehicle body and reaches the door opening position. Then, the position switch feeds back a signal to stop the drive motor 20, thus completing the smooth opening of the single-opening sliding door.

[0053] When the door controller receives the closing command, the drive motor 20 rotates in reverse, causing the door leaf 1 to slide back longitudinally and then be pulled laterally into the vehicle body, so that the outer surface of the door leaf 1 is flush with the vehicle body. After closing, the mechanical lock is first formed at the load-bearing drive mechanism 2. Then, the small motor 85 in the locking assembly 8 drives the lock sleeve 82 to extend through the connecting rod 83. With the help of the wedge-shaped inclined surface of the lock sleeve 82, the door leaf 1 is further pulled into the vehicle by 5 to 10 mm, so that the first sealing strip 5 and the second sealing strip 6 are fully compressed. Thus, multiple locking and sealing are completed under the combined action of the mechanism lock and the door leaf lock.

[0054] During unlocking, the first cylinder 220 in the unlocking mechanism 22 is activated and pushes the rocker arm 221 to swing. The rocker arm 221 drives the rotating plate 222 to rotate. The rotating plate 222, on the one hand, drives the locking fork 224 to disengage from the locking pin via the cam 225, and on the other hand, pushes the slide lock 223 to move towards the drive motor 20, causing the locking roller to disengage from the locking pit. At the same time, the second cylinder 80 in the locking assembly 8 is unloaded and the lock sleeve 82 is retracted by the energy storage spring 81 and separated from the mating parts. Thus, all locking points are released synchronously, and the door leaf 1 can be opened under the drive of the load-bearing drive mechanism 2. In an emergency, the same linkage unlocking can be achieved by operating the emergency valve to cut off the air supply with one button.

[0055] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. An electric single-opening sliding door system, comprising a door leaf (1) and a load-bearing drive mechanism (2), wherein the load-bearing drive mechanism (2) is hygienically connected to the door leaf (1) and drives the door leaf (1) to perform a sliding motion, characterized in that: The outer wall of the door leaf (1) is provided with a first sealing strip (5) and a second sealing strip (6), and the first sealing strip (5) is provided along the circumference of the door opening, the second sealing strip (6) is provided on the outer side of the door opening pillar, and a locking assembly (8) is provided on the door leaf (1). When the door leaf (1) is closed, the locking assembly (8) locks the door leaf (1) and drives the door leaf (1) to move inward towards the vehicle.

2. The electric single-opening sliding door system according to claim 1, characterized in that: The first sealing strip (5) includes a snap-fit ​​base (50) and a cavity (51) connected to the snap-fit ​​base (50). The snap-fit ​​base (50) is snapped into a slot in the circumferential direction of the door opening, and the cavity (51) extends along the length direction of the first sealing strip (5).

3. The electric single-opening sliding door system according to claim 1, characterized in that: The second sealing strip (6) has elastic small ears (60) and mounting holes (61) on its body. The second sealing strip (6) is fixed to the outer side of the door opening post by fasteners inserted into the mounting holes (61).

4. The electric single-opening sliding door system according to claim 1, characterized in that: The locking assembly (8) includes a second cylinder (80), an energy storage spring (81), a locking sleeve (82), a connecting rod (83), and a small motor (85). The small motor (85) is connected to the locking sleeve (82) via the connecting rod (83), and the second cylinder (80) and the energy storage spring (81) are respectively connected to the locking sleeve (82).

5. The electric single-opening sliding door system according to claim 4, characterized in that: The lock sleeve (82) has a wedge-shaped surface, and the door leaf (1) is provided with a mating part corresponding to the lock sleeve (82). When the small motor (85) drives the lock sleeve (82) to extend through the connecting rod (83), the lock sleeve (82) engages with the mating part through the wedge-shaped surface, causing the door leaf (1) to move 5 to 10 mm towards the inside of the vehicle.

6. The electric single-opening sliding door system according to claim 4, characterized in that: The energy storage spring (81) is positioned between the second cylinder (80) and the locking sleeve (82), and when the second cylinder (80) is unloaded, the energy storage spring (81) drives the locking sleeve (82) to reset and retract.

7. The electric single-opening sliding door system according to claim 1, characterized in that: The load-bearing drive mechanism (2) includes a drive motor (20) and a mounting bracket (21). The drive motor (20) is mounted on the mounting bracket (21) and is connected to the door leaf (1) via a screw and nut pair. The mounting bracket (21) is fixed to the vehicle body.

8. The electric single-opening sliding door system according to claim 1, characterized in that: The door leaf (1) is provided with a touch button (7), and the touch button (7) is electrically connected to the door controller. The door controller is respectively connected to the load-bearing drive mechanism (2) and the locking assembly (8).

9. An electric single-opening sliding door system according to claim 7, characterized in that: The load-bearing drive mechanism (2) is provided with an unlocking mechanism (22), and the unlocking mechanism (22) includes a first cylinder (220), a rocker arm (221), a rotating plate (222), a slide lock (223), a locking fork (224) and a cam (225). The output end of the first cylinder (220) is connected to the rocker arm (221), and the rocker arm (221) abuts against the rotating plate (222). The rotating plate (222) is connected to the cam (225) and the slide lock (223) respectively. The locking fork (224) is provided on the cam (225).

10. An electric single-opening sliding door system according to claim 9, characterized in that: The first cylinder (220) drives the rocker arm (221) to swing and drive the rotating plate (222) to rotate. The rotating plate (222) drives the locking fork (224) to rotate and disengage from the locking pin via the cam (225), and simultaneously pushes the slide lock (223) to move.

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