Electric unlocking and locking device for a passenger door handle of a passenger car

Abstract

The utility model relates to the technical field of passenger door of passenger train, more specifically, electric unlocking and locking device of passenger door handle of passenger train, including base, drive ring and linkage, the base is installed in passenger door, the base is equipped with the positioning shaft, the drive ring rotationally covers and sets in the positioning shaft outer periphery, the linkage is connected with drive ring, still including electric drive mechanism and drive gear, the drive gear fixedly covers and is equipped with drive ring outer periphery, the output of electric drive mechanism is equipped with the sector gear that is engaged with drive gear, electric drive mechanism drives drive ring rotation through sector gear and drive gear. The utility model through electric drive mechanism, can realize the unlocking or locking of remote or automatic control passenger door handle, can be linked with remote control or central control system, improves the operating convenience, is fit for modern new energy or intelligent vehicle demand, reduces the manual operation intensity, adapts the scene of frequently unlocking, locking.

Description

Technical Field

[0001] This utility model relates to the technical field of bus body components, and more specifically, to an electric unlocking and locking device for bus passenger door handles. Background Technology

[0002] The passenger door of a bus is the only passage for passengers to get on and off the bus. The safety, reliability and convenience of its handle device are directly related to the efficiency of passenger boarding and alighting and personal safety, and also affect the driver's workload.

[0003] Currently, the passenger door handle systems widely used in buses mostly employ traditional mechanical, manually operated mechanisms. These traditional devices typically consist of a handle, a rotating shaft, a linkage mechanism, and a door pump valve. Their working principle is that the driver or passenger manually operates or rotates the handle; this mechanical force is transmitted through the rotating shaft and a series of linkages, ultimately controlling the opening and closing of the door pump valve, thus controlling the "opening" and "closing" of the passenger door. However, this purely manual handle system is increasingly revealing many inherent technical limitations and safety hazards in modern bus operation scenarios.

[0004] Drivers frequently open and close passenger doors during operation, sometimes hundreds of times a day. The purely mechanical structure, without any assistance, places significant strain on the arms, shoulders, and neck from repeated operation, easily leading to muscle strain and occupational diseases, impacting their physical and mental health and long-term job stability. The speed and force of manual operation vary from person to person and are affected by driver fatigue. When rapid passenger boarding and alighting are required, slow door opening and closing speeds prolong vehicle dwell time, becoming a bottleneck restricting overall operational efficiency. Manual operation makes it difficult to precisely control the initial speed and force of door movement, greatly increasing the risk of accidents where passengers are injured by the door. In emergencies, panicked manual operation may fail due to incorrect force or direction, or mechanical parts may jam, preventing timely door opening. Traditional manual handles cannot be integrated with modern centralized control systems, hindering intelligent and automated upgrades.

[0005] On the other hand, while hydraulic or pneumatic systems reduce the burden of manual labor to some extent, they still rely on external power sources provided by the vehicle, such as compressed air systems or hydraulic pump stations. These systems are complex in structure, containing various components such as cylinders, pumps, valves, and pipelines. They not only occupy a large space and are heavy, but also face high installation and maintenance costs. At the same time, hydraulic and pneumatic systems are prone to problems such as aging of seals and leakage of media during long-term use, leading to decreased system stability and even performance failure under extreme temperature environments, affecting the reliability of the entire vehicle.

[0006] Existing passenger door handle unlocking and locking technologies in buses generally lack electrification and intelligent integration capabilities. Traditional mechanical structures cannot interact with the vehicle's central control system, nor can they be connected to remote monitoring or control modules, resulting in the inability to achieve functions such as centralized control, status monitoring, fault diagnosis, or automated scheduling. In the context of increasingly centralized vehicle electronic and electrical architectures, this "information silo" status severely limits the improvement of overall vehicle management.

[0007] As the bus industry continues to demand higher operational efficiency, safety, and user experience, especially under the major trends of electrification, connectivity, and intelligence, the technological shortcomings of existing passenger door handle unlocking and locking systems are becoming increasingly apparent. The industry urgently needs to upgrade and iterate these systems to drive the development of bus passenger door handles towards intelligence and electrification. Utility Model Content

[0008] The purpose of this utility model is to overcome the shortcomings of the prior art and provide an electric unlocking and locking device for the handle of the passenger door of a bus, which can realize the electric control of the passenger door and improve the ease of operation.

[0009] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: An electric unlocking and locking device for a passenger door handle of a bus includes a base, a drive ring, and a linkage. The base is installed on the passenger door and has a positioning shaft. The drive ring is rotatably sleeved on the outer circumference of the positioning shaft, and the linkage is connected to the drive ring. The device also includes an electric drive mechanism and a drive gear. The drive gear is fixedly sleeved on the outer circumference of the drive ring, and the output end of the electric drive mechanism has a sector gear that meshes with the drive gear. The electric drive mechanism drives the drive ring to rotate through the sector gear and the drive gear.

[0010] This utility model discloses an electric unlocking and locking device for a passenger door handle in a bus. Through an electric drive mechanism and the meshing of a sector gear and a drive gear, it enables remote or automatic control of the passenger door's opening and closing. It can be linked with remote control or central control systems, improving operational convenience and meeting the needs of modern new energy or intelligent vehicles. It reduces manual operation intensity and adapts to scenarios requiring frequent unlocking or locking. The mechanical linkage design between the drive gear and the drive ring ensures stable movement of the linkage components, avoiding unlocking and locking failures caused by improper operation of traditional handles. The electric drive mechanism is separated from the mechanical transmission components, facilitating independent maintenance or upgrades and reducing the overall failure rate.

[0011] Furthermore, the drive ring includes an outer ring portion and a connecting portion disposed on the inner wall of the outer ring portion. The outer ring portion is rotatably sleeved on the outer circumference of the positioning shaft. The drive gear and the linkage are respectively fixedly disposed on the outer circumference of the outer ring portion. The connecting portion has a sliding groove, and the positioning shaft is fixedly provided with a limiting block, which slides within the sliding groove. When the sector gear of the electric drive mechanism drives the drive gear to rotate, the drive ring rotates, and the sliding groove rotates, causing the limiting block to slide relative to the sliding groove. The limiting block is fixed on the base, which can limit the sliding groove, the drive ring, and the linkage connected to the drive ring, thus limiting the rotation range of the drive ring and the linkage. The linkage is directly sleeved on the outer ring portion, reducing the transmission path, lowering friction loss, and ensuring smooth unlocking and locking actions.

[0012] Furthermore, it also includes a switch, and the drive ring further includes a central shaft portion, which is coaxially fixed to the inner side of the outer ring portion via the connecting portion. One end of the switch passes through the positioning shaft and is fixedly connected to the central shaft portion. Unlocking or locking operations can be performed by manually rotating the switch as needed. The central shaft portion and the switch are directly linked, avoiding the lag or jamming that may occur with traditional multi-stage transmissions.

[0013] Furthermore, the outer wall of the base is provided with an indicator mark. When the electric drive mechanism drives the drive ring to rotate, the central shaft can drive the switch to rotate. The unlocked or locked state can be visually determined by the indicator mark pointed to by the switch. The direction of rotating the switch can also be determined during manual operation.

[0014] Furthermore, the base is provided with a reset structure, and the linkage is provided with a protrusion that contacts the reset structure. When the electric drive mechanism drives the drive ring and the linkage to rotate, the protrusion contacts and squeezes the reset structure to elastically deform. When the operation ends, the reset structure drives the linkage to reset under the action of elastic force.

[0015] Furthermore, the base is connected to the passenger door's fixing component via a connector. The connector can be a bolt, and the base is connected to the fixing component via bolts, achieving a rigid connection to the vehicle body. This ensures the device's vibration resistance during vehicle operation and prevents loosening or displacement due to bumps. It is adaptable to various vehicle models and has strong versatility. The fixing component, as an independent component, facilitates standardized production, reduces installation complexity, and improves assembly efficiency. The bolted connection provides high shear strength, preventing the device from falling off or failing due to external forces.

[0016] Furthermore, it also includes a mounting bracket, which is mounted on the fixing member, and the electric drive mechanism is mounted on the mounting bracket. As an independent component, the mounting bracket allows for flexible adjustment of the position or angle of the electric drive mechanism to adapt to the installation requirements of different vehicle models. The mounting bracket design facilitates future upgrades, such as replacing with a higher-power motor or adding sensors.

[0017] Furthermore, the mounting bracket is equipped with cushioning foam, which is installed between the mounting bracket and the fixing component, and also between the mounting bracket and the electric drive mechanism. The cushioning foam has excellent shock absorption performance, absorbing vibrations and impacts during vehicle operation, reducing mechanical stress on the electric drive mechanism caused by vibration, and preventing component loosening or damage. Simultaneously, the closed-cell structure of the cushioning foam effectively isolates noise transmission, reducing mechanical noise during device operation. The cushioning foam also disperses localized pressure between the electric drive mechanism and the mounting bracket, preventing wear caused by direct friction between metal parts and extending the service life of the electric drive mechanism. In addition, the cushioning foam is waterproof and dustproof, suitable for long-term use outdoors or in harsh conditions.

[0018] Furthermore, the mounting bracket is provided with heat dissipation holes located at the contact point between the mounting bracket and the electric drive mechanism. These holes accelerate airflow, reduce internal temperature, and ensure stable operation of the electric drive mechanism even in high-temperature environments. This prevents circuit failures or mechanical jamming caused by excessive temperature, thus extending the service life of the electric drive mechanism.

[0019] Furthermore, it also includes a Bluetooth communication module, which communicates with the electric drive mechanism. Operators can remotely control the passenger door handle to unlock or lock via mobile devices or the vehicle's center console, eliminating the need for a physical key, thus improving operational convenience. It can also record unlocking and locking logs for easy tracing of operational responsibility. Simultaneously, it supports real-time status monitoring (such as whether the passenger door handle is unlocked or locked, and abnormal vibration detection) for centralized management.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows: (1) Through the electric drive mechanism, the unlocking or locking of the passenger door handle can be realized remotely or automatically. It can be linked with the remote control or central control system, which improves the ease of operation and is suitable for the needs of modern new energy or intelligent vehicles. It reduces the intensity of manual operation and adapts to the scenario of frequent unlocking or locking. The mechanical linkage design of the drive gear and drive ring ensures the stable movement of the linkage components and avoids the failure of unlocking or locking caused by improper operation of the traditional handle. The electric drive mechanism is separated from the mechanical transmission components, which facilitates independent maintenance or upgrading and reduces the overall failure rate; (2) The linkage is directly fitted onto the outer ring, reducing the transmission path, reducing friction loss, and ensuring smooth unlocking and locking actions; (3) The device can be adapted to various vehicle models by using the passenger door fixing parts; the position of the electric drive mechanism can be flexibly adjusted by the mounting bracket, which is convenient for future upgrades (such as replacing the motor or adding sensors); the electric drive mechanism, drive ring and other components are separated, which is convenient for independent maintenance or replacement, reducing the overall failure rate; standardized production reduces installation complexity, improves assembly efficiency, and meets the needs of large-scale applications.

[0021] (4) The cushioning foam of the mounting bracket absorbs the vibration and impact during vehicle operation, reduces mechanical stress and noise, and extends the life of the electric drive mechanism; the heat dissipation holes accelerate air circulation and prevent the motor from overheating, which can lead to performance degradation or failure. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the electric unlocking and locking device for the passenger door handle of a bus in this embodiment of the present invention; Figure 2 This is a partial structural diagram of the electric unlocking and locking device for the passenger door handle of a bus in an embodiment of this utility model; Figure 3 This is a schematic diagram of the base structure in an embodiment of the present utility model; Figure 4 This is a schematic diagram of the drive ring structure in an embodiment of the present invention; Figure 5 This is a schematic diagram of the switch installation in an embodiment of this utility model.

[0023] In the attached diagram: 1-base; 11-positioning shaft; 12-limiting block; 2-drive ring; 21-outer ring; 22-connecting part; 221-slide groove; 23-central shaft; 3-linkage component; 4-electric drive mechanism; 41-sector gear; 5-drive gear; 6-fixed component; 7-mounting bracket; 8-switch; 9-reset structure; 10-indicator mark. Detailed Implementation

[0024] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0025] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances. Example

[0026] like Figures 1 to 4As shown, the electric unlocking and locking device for the passenger door handle of this utility model includes a base 1, a drive ring 2, and a linkage 3. The base 1 is installed on the passenger door and has a positioning shaft 11. The drive ring 2 is rotatably sleeved on the outer circumference of the positioning shaft 11, and the linkage 3 is connected to the drive ring 2. It also includes an electric drive mechanism 4 and a drive gear 5. The drive gear 5 is fixedly sleeved on the outer circumference of the drive ring 2. The output end of the electric drive mechanism 4 is provided with a sector gear 41 that meshes with the drive gear 5. The electric drive mechanism 4 drives the drive ring 2 to rotate through the sector gear 41 and the drive gear 5.

[0027] The aforementioned electric unlocking and locking device for the passenger door handle of the bus, through the electric drive mechanism 4 and the meshing of the sector gear 41 and the drive gear 5, can achieve remote or automatic control of unlocking or locking the passenger door handle. It can be linked with remote control or central control systems, improving operational convenience and meeting the needs of modern new energy or intelligent vehicles. It reduces the intensity of manual operation and adapts to scenarios requiring frequent unlocking or locking. The mechanical linkage design between the drive gear 5 and the drive ring 2 ensures stable movement of the linkage component 3, avoiding unlocking or locking failures caused by improper operation of traditional handles. The electric drive mechanism 4 is separated from the mechanical transmission components, facilitating independent maintenance or upgrades and reducing the overall failure rate.

[0028] like Figures 1 to 4 As shown, the drive ring 2 includes an outer ring portion 21 and a connecting portion 22 disposed on the inner wall of the outer ring portion 21. The outer ring portion 21 is rotatably sleeved on the outer periphery of the positioning shaft 11. The drive gear 5 and the linkage 3 are respectively fixedly disposed on the outer periphery of the outer ring portion 21. The connecting portion 22 has a sliding groove 221. The positioning shaft 11 is fixedly provided with a limiting block 12, which slides within the sliding groove 221. When the electric drive mechanism 4 drives the sector gear 41 and the drive gear 5 to rotate, the drive ring 2 rotates, and the sliding groove 221 rotates, causing the limiting block 12 to slide relative to the sliding groove 221. The limiting block 12 is fixed on the base 1, which can limit the sliding groove 221, the drive ring 2, and the linkage 3 connected to the drive ring 2, thus limiting the rotation range of the drive ring 2 and the linkage 3. Among them, the linkage 3 is directly sleeved on the outer ring portion 21, reducing the transmission path, reducing friction loss, and ensuring smooth unlocking and locking actions. Example

[0029] This embodiment is similar to Embodiment 1, except that, as Figure 1 , Figure 2 and Figure 5 As shown, the drive ring 2 also includes a switch 8 and a central shaft 23. The central shaft 23 is coaxially fixed to the inner side of the outer ring 21 via a connecting part 22. One end of the switch 8 passes through the positioning shaft 11 and is fixedly connected to the central shaft 23. The switch 8 can be manually rotated to unlock or lock as needed. The central shaft 23 and the switch 8 are directly linked, avoiding the lag or jamming that may occur with traditional multi-stage transmissions.

[0030] like Figure 5 As shown, an indicator mark 10 is provided on the outer wall of the base 1. When the electric drive mechanism 4 drives the drive ring 2 to rotate, the switch 8 can be driven to rotate through the central shaft 23. The unlocked or locked state can be visually determined by the indicator mark 10 pointed to by the switch 8, and the direction of rotation of the switch can also be determined during manual operation.

[0031] like Figure 1 , Figure 2 As shown, the base 1 is provided with a reset structure 9, and the linkage 3 is provided with a protrusion that contacts the reset structure 9. When the electric drive mechanism 4 drives the drive ring 2 and the linkage 3 to rotate, the protrusion contacts and squeezes the reset structure 9 to elastically deform. When the operation ends, the reset structure 9 drives the linkage 3 to reset under the action of elastic force.

[0032] In addition, such as Figure 1 , Figure 2 As shown, the base 1 is connected to the passenger door fixing member 6 via a connector. The connector can be a bolt. The base 1 is connected to the fixing member 6 via bolts, achieving a rigid connection with the vehicle body. This ensures the device's vibration resistance during vehicle operation and prevents loosening or displacement due to bumps. It is adaptable to various vehicle models and has strong versatility. The fixing member 6, as an independent component, facilitates standardized production, reduces installation complexity, and improves assembly efficiency. The bolted connection provides high shear strength, preventing the device from falling off or failing due to external forces.

[0033] like Figure 1 As shown, it also includes a mounting bracket 7, which is bolted to the fixing member 6. The electric drive mechanism 4 is mounted on the mounting bracket 7. As an independent component, the mounting bracket 7 allows for flexible adjustment of the position or angle of the electric drive mechanism 4 to adapt to the installation requirements of different vehicle models. The mounting bracket 7 is designed to facilitate future upgrades, such as replacing with a higher-power motor or adding sensors.

[0034] In this embodiment, the mounting bracket 7 is equipped with cushioning foam, which is installed between the mounting bracket 7 and the fixing member 6, and also between the mounting bracket 7 and the electric drive mechanism 4. The cushioning foam has excellent shock absorption performance, absorbing vibrations and impacts during vehicle operation, reducing mechanical stress on the electric drive mechanism 4 caused by vibration, and preventing component loosening or damage. Simultaneously, the closed-cell structure of the cushioning foam effectively isolates noise transmission, reducing mechanical noise during device operation. The cushioning foam also disperses local pressure between the electric drive mechanism 4 and the mounting bracket 7, preventing wear caused by direct friction between metal parts and extending the device's service life. Furthermore, the cushioning foam is waterproof and dustproof, suitable for long-term use outdoors or in harsh conditions.

[0035] Furthermore, the mounting bracket 7 is provided with heat dissipation holes, which are located at the contact area between the mounting bracket 7 and the electric drive mechanism 4. It should be noted that the cushioning foam of the mounting bracket 7 is installed in the area outside the heat dissipation holes, leaving the gaps for the heat dissipation holes. While the cushioning foam absorbs vibration and impact, the heat dissipation holes can accelerate air circulation, reduce the internal temperature, and ensure that the electric drive mechanism 4 can still operate stably in high-temperature environments. This avoids circuit failures or mechanical jamming caused by excessive temperature, and extends the service life of the electric drive mechanism 4. Example

[0036] This embodiment is similar to Embodiment 2, except that it also includes a Bluetooth communication module, which is connected to both the electric drive mechanism 4 and the vehicle control system. Operators can remotely control the passenger door handle to unlock or lock via mobile devices or the vehicle's central control console, eliminating the need for a physical key and improving operational convenience. Unlocking and locking logs can also be recorded, facilitating the traceability of operational responsibility. Real-time status monitoring (such as whether the passenger door handle is unlocked or locked, and abnormal vibration detection) is also supported, facilitating centralized management.

[0037] The working principle of this utility model is as follows: During use, the operator sends an unlock command via a mobile app or the vehicle's central control system. The Bluetooth communication module receives the signal and triggers the electric drive mechanism 4 to start. If there is no Bluetooth connection, the driver can manually trigger the unlocking action via the external physical switch 8 (button or knob). The output end of the electric drive mechanism 4 drives the drive gear 5 to rotate. The drive gear 5 drives the drive ring 2 to rotate around the positioning shaft 11. The rotation of the drive ring 2 is transmitted to the linkage 3 through the outer ring 21. The linkage 3 is fitted onto the outer ring 21, and its movement enables the unlocking or locking action. The Bluetooth communication module uploads the unlocking and locking status in real time and records the operation log (such as unlocking time, locking time, and operator identity) for easy tracking and management.

[0038] Compared with the prior art, the beneficial effects of this utility model are as follows: the switch 8 for unlocking or locking the passenger door handle can be remotely or automatically controlled through the electric drive mechanism 4. It can be linked with the remote control or central control system, improving the convenience of operation, which is suitable for the needs of modern new energy or intelligent vehicles, reducing the intensity of manual operation, and adapting to scenarios of frequent unlocking or locking. The mechanical linkage design of the drive gear 5 and the drive ring 2 ensures the stable movement of the linkage 3, avoiding the failure of unlocking or locking caused by improper operation of the traditional handle. The electric drive mechanism 4 is separated from the mechanical transmission components, facilitating independent maintenance or upgrades and reducing the overall failure rate. The linkage 3 is directly fitted onto the outer ring 21, reducing the transmission path, friction loss, and ensuring smooth unlocking and locking actions. Utilizing the passenger door fixing component 6, the device can be adapted to various vehicle models. The position of the electric drive mechanism 4 can be flexibly adjusted via the mounting bracket 7, facilitating future upgrades (such as replacing the motor or adding sensors). The separation of components such as the electric drive mechanism 4 and drive ring 2 facilitates independent maintenance or replacement, reducing the overall failure rate. Standardized production reduces installation complexity, improves assembly efficiency, and meets the needs of large-scale applications. The buffer foam of the mounting bracket 7 absorbs vibrations and impacts during vehicle operation, reducing mechanical stress and noise, and extending the life of the electric drive mechanism 4. The heat dissipation holes accelerate airflow, preventing performance degradation or malfunctions caused by motor overheating.

[0039] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0040] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An electric unlocking and locking device for a passenger door handle of a bus, comprising a base (1), a drive ring (2), and a linkage (3), wherein the base (1) is installed on the passenger door, the base (1) is provided with a positioning shaft (11), the drive ring (2) is rotatably sleeved on the outer periphery of the positioning shaft (11), and the linkage (3) is connected to the drive ring (2); characterized in that, It also includes an electric drive mechanism (4) and a drive gear (5). The drive gear (5) is fixedly fitted on the outer circumference of the drive ring (2). The output end of the electric drive mechanism (4) is provided with a sector gear (41) that meshes with the drive gear (5). The electric drive mechanism (4) drives the drive ring (2) to rotate through the sector gear (41) and the drive gear (5).

2. The electric unlocking and locking device for the passenger door handle of a bus according to claim 1, characterized in that, The drive ring (2) includes an outer ring (21) and a connecting part (22) disposed on the inner wall of the outer ring (21). The outer ring (21) is rotatably sleeved on the outer circumference of the positioning shaft (11). The drive gear (5) and the linkage (3) are respectively fixed on the outer circumference of the outer ring (21). The connecting part (22) is provided with a sliding groove (221). The positioning shaft (11) is fixedly provided with a limiting block (12). The limiting block (12) slides in the sliding groove (221).

3. The electric unlocking and locking device for the passenger door handle of a bus according to claim 2, characterized in that, It also includes a switch (8), and the drive ring (2) also includes a central shaft (23). The central shaft (23) is coaxially fixed to the inner side of the outer ring (21) through the connecting part (22). One end of the switch (8) passes through the positioning shaft (11) and is fixedly connected to the central shaft (23).

4. The electric unlocking and locking device for the passenger door handle of a bus according to claim 1, characterized in that, The base (1) has an indicator mark (10) on its outer wall.

5. The electric unlocking and locking device for the passenger door handle of a bus according to claim 1, characterized in that, The base (1) is provided with a reset structure (9), and the linkage (3) is provided with a protrusion, which contacts the reset structure (9).

6. The electric unlocking and locking device for the passenger door handle of a bus according to claim 1, characterized in that, The base (1) is connected to the fixing member (6) of the passenger door via a connector.

7. The electric unlocking and locking device for the passenger door handle of a bus according to claim 6, characterized in that, It also includes a mounting bracket (7), which is mounted on the fixing member (6), and the electric drive mechanism (4) is mounted on the mounting bracket (7).

8. The electric unlocking and locking device for the passenger door handle of a bus according to claim 7, characterized in that, The mounting bracket (7) is provided with cushioning foam, which is installed between the mounting bracket (7) and the fixing member (6), and the cushioning foam is also installed between the mounting bracket (7) and the electric drive mechanism (4).

9. The electric unlocking and locking device for the passenger door handle of a bus according to claim 7, characterized in that, The mounting bracket (7) is provided with heat dissipation holes.

10. The electric unlocking and locking device for the passenger door handle of a bus according to claim 1, characterized in that, It also includes a Bluetooth communication module, which is connected in communication with the electric drive mechanism (4).

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