Door unlocking mechanism, door and vehicle

Abstract

The application discloses a vehicle door unlocking mechanism, a vehicle door and a vehicle, and relates to the technical field of vehicles. The vehicle door unlocking mechanism comprises a lock core, a lock body and a transmission rod. One end of the transmission rod is in transmission connection with the lock core, and the other end is in transmission connection with the lock body. The transmission rod is configured to rotate under the driving of the lock core and drive the lock body to unlock the vehicle door through rotation. The transmission rod drives the lock body to unlock the vehicle door through rotation. The unlocking process needs to overcome the rotation resistance, and compared with the unlocking mode of up-down movement of the transmission rod, the unlocking difficulty of illegal unlocking is significantly increased.

Description

Technical Field

[0001] This application relates to the field of vehicles, and more particularly to a door unlocking mechanism, a door, and a vehicle. Background Technology

[0002] Car doors typically have mechanical unlocking mechanisms to allow occupants to enter the vehicle when the battery is dead or other electronic unlocking mechanisms fail. While this design enables the doors to be opened mechanically, it also creates a risk of theft. Current designs cannot prevent criminals from using tools to forcibly unlock the doors through gaps between windows and the doors, resulting in a high risk of vehicle theft. Utility Model Content

[0003] This application provides a door unlocking mechanism, a door, and a vehicle to at least partially solve the aforementioned technical problems.

[0004] To achieve the above objectives, according to a first aspect of this application, a vehicle door unlocking mechanism is provided, including a lock cylinder, a lock body, and a transmission rod. One end of the transmission rod is throttle-connected to the lock cylinder, and the other end is throttle-connected to the lock body. The transmission rod is configured to rotate under the drive of the lock cylinder and thereby drive the lock body to unlock the vehicle door.

[0005] In one possible implementation, the door unlocking mechanism further includes a first transmission assembly, wherein the transmission rod and the lock cylinder are connected via the first transmission assembly, and the lock cylinder indirectly drives the transmission rod to rotate via the first transmission assembly.

[0006] In one possible implementation, the first transmission assembly includes a first transmission member and a second transmission member that are connected by transmission. The first transmission member is connected to the lock cylinder, and the second transmission member is connected to the transmission rod. The rotation axis of the first transmission member intersects the rotation axis of the second transmission member, and the transmission rod is indirectly connected to the lock cylinder through the first transmission member and the second transmission member.

[0007] In one possible implementation, the first transmission assembly further includes a third transmission member, which is connected to the lock cylinder and meshes with the first transmission member. The number of teeth in the first transmission member is greater than the number of teeth in the third transmission member to increase the transmission ratio. The transmission rod is indirectly connected to the lock cylinder through the third transmission member, the first transmission member, and the second transmission member.

[0008] In one possible implementation, the first transmission member has a first tooth and a second tooth, the first tooth and the second tooth being located on opposite sides of the first transmission member's axial direction, the first transmission member engaging with the third transmission member via the first tooth and engaging with the second transmission member via the second tooth.

[0009] In one possible implementation, the lock cylinder has a mounting shaft, the third transmission member is disposed on the mounting shaft, and the door unlocking mechanism further includes a limiting member disposed on the mounting shaft for limiting the third transmission member from moving away from the lock cylinder along the axial direction of the mounting shaft.

[0010] In one possible implementation, the door unlocking mechanism further includes a lock housing, with the lock cylinder disposed within the lock housing.

[0011] In one possible implementation, the lock cylinder has a keyhole for key insertion, and the lock housing has a first flange on the side opposite to the keyhole. The first flange is located on the side of the limiting member opposite to the transmission rod, and the projection of the first flange at least partially overlaps with the projection of the limiting member along the radial direction of the lock cylinder.

[0012] In one possible implementation, the second transmission member and the transmission rod are connected via a first connecting shaft to form a rotating pair.

[0013] In one possible implementation, the transmission rod is provided with a first groove extending along its axial direction, and the first connecting shaft passes through the first groove.

[0014] In one possible implementation, the door unlocking mechanism further includes a lock body connector, one end of which is connected to the lock body and the other end of which is connected to the transmission rod.

[0015] In one possible implementation, the lock body connector is plugged into the lock body.

[0016] In one possible implementation, the lock body connector includes a connector body and a second flange. The connector body connects the lock body and the transmission rod. The second flange is disposed on the outer periphery of the connector body. The lock body has a first connecting portion connected to the connector body. Along the axial direction of the lock body connector, the projection of the second flange at least partially overlaps with the projection of the first connecting portion.

[0017] In one possible implementation, the lock body connector and the transmission rod are connected via a second connecting shaft to form a rotating pair.

[0018] In one possible implementation, the lock body connector is provided with a second slide groove extending axially therein, and the second connecting shaft passes through the second slide groove.

[0019] According to a second aspect of this application, a vehicle door is provided, including the aforementioned vehicle door unlocking mechanism.

[0020] According to a third aspect of this application, a vehicle is provided, including the aforementioned door or the aforementioned door unlocking mechanism.

[0021] In the door unlocking mechanism of this application embodiment, the transmission rod drives the lock body to unlock the door by rotation. This unlocking process requires overcoming rotational resistance, which significantly increases the difficulty of illegal unlocking compared to unlocking methods where the transmission rod moves up and down. Furthermore, since the door unlocking mechanism is usually hidden inside the door and far from door and window gaps, it is difficult for external tools to directly access the transmission rod. This further raises the operational threshold for illegally rotating the transmission rod, thereby effectively reducing the probability of illegal unlocking and thus reducing the risk of theft.

[0022] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0025] Figure 1 Exploded views of door unlocking mechanisms provided for some embodiments of this application;

[0026] Figure 2 A partial structural schematic diagram of the door unlocking mechanism provided for some embodiments of this application;

[0027] Figure 3 Assembly diagrams of the lock case, lock body, and transmission assembly provided for some embodiments of this application;

[0028] Figure 4 A schematic diagram of the structure of the first transmission member provided for some embodiments of this application;

[0029] Figure 5 Partial structure of the door unlocking mechanism provided in some other embodiments of this application;

[0030] Figure 6 for Figure 5 A structural diagram from another perspective;

[0031] Figure 7 for Figure 6 Sectional view along AA;

[0032] Figure 8 Structural schematic diagrams of a vehicle door provided for some embodiments of this application;

[0033] Figure 9 Structural block diagrams of vehicles provided for some embodiments of this application.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1000 - Vehicles;

[0036] 200 - Door; 210 - Door body;

[0037] 100 - Door unlocking mechanism;

[0038] 10-Lock cylinder; 11-Mounting shaft; 12-Lock hole;

[0039] 20-Lock body;

[0040] 30 - Transmission rod; 31 - First slide groove; 33 - First connecting shaft; 34 - Second connecting shaft;

[0041] 40 - First transmission assembly; 41 - First transmission component; 411 - First tooth; 412 - Second tooth; 42 - Second transmission component; 43 - Third transmission component;

[0042] 50 - Limiting component;

[0043] 60 - Lock case; 61 - First flange;

[0044] 70 - Lock body connector; 71 - Connector body; 72 - Second flange; 73 - Second slide groove; 74 - First connecting part;

[0045] 80 - Mounting bracket. Detailed Implementation

[0046] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0047] In typical mechanical unlocking designs for car doors, the lock cylinder drives the bolt of the lock body via a transmission rod to unlock the door. The lock body is usually located in the middle or lower part of the door to ensure balanced closing and reduce vibration during vehicle movement. The lock cylinder is often positioned for easy access by the driver and passengers (such as on the door handle) for convenient unlocking. This design results in a relatively large distance between the lock body and the lock cylinder, necessitating a transmission rod to transfer the driving force from the lock cylinder to the lock body, which in turn moves the bolt, ultimately unlocking the door.

[0048] In current unlocking methods, the rotation of the lock cylinder moves the transmission rod upwards, which in turn triggers the lock body and bolt to unlock the car door. This up-and-down movement of the transmission rod allows criminals to illegally unlock the door in two ways: first, by using tools to hook and pull the transmission rod upwards through the gap between the car window and the door; second, by using leverage to pry the lock cylinder from the outside, causing the transmission rod to move upwards. This design flaw makes the car door easy to illegally open, resulting in a high risk of vehicle theft.

[0049] In view of this, according to the first aspect of this application, a door unlocking mechanism 100 is provided.

[0050] Reference Figure 1 and Figure 2 , Figure 1 Exploded view of a door unlocking mechanism 100 provided for some embodiments of this application; Figure 2 A partial structural schematic diagram of a door unlocking mechanism 100 provided for some embodiments of this application.

[0051] Reference Figure 1 and Figure 2 In some embodiments, the door unlocking mechanism 100 includes a lock cylinder 10, a lock body 20, and a transmission rod 30. One end of the transmission rod 30 is connected to the lock cylinder 10, and the other end is connected to the lock body 20. The transmission rod 30 is configured to rotate under the drive of the lock cylinder 10 and thereby drive the lock body 20 to unlock the door 200.

[0052] Among them, the door unlocking mechanism 100 can be hidden inside the door body 210 of the door 200, not exposed to the view of the driver and passengers, thus improving the consistency of the interface.

[0053] The lock cylinder 10 can be located near the handle of the door 200 or on the handle of the door 200.

[0054] In this embodiment, the transmission rod 30 rotates to drive the lock body 20 to unlock the car door 200. This unlocking process requires overcoming rotational resistance, which significantly increases the difficulty of illegal unlocking compared to the unlocking method where the transmission rod 30 moves up and down. Furthermore, since the car door unlocking mechanism 100 is typically hidden inside the car door 200 and far from door and window gaps, external tools cannot directly access the transmission rod 30. This further raises the operational threshold for illegally rotating the transmission rod 30, effectively reducing the probability of illegal unlocking and consequently reducing theft.

[0055] Figure 3 Assembly diagrams of the lock housing 60, lock body 20, and transmission assembly provided for some embodiments of this application, with reference to... Figure 3In some embodiments, the door unlocking mechanism 100 further includes a first transmission assembly 40, in which the transmission rod 30 and the lock cylinder 10 are connected by transmission through the first transmission assembly 40, and the lock cylinder 10 indirectly drives the transmission rod 30 to rotate through the first transmission assembly 40.

[0056] The lock cylinder 10 indirectly drives the transmission rod 30 to rotate through the first transmission component 40. The first transmission component 40 can change the direction of force movement and flexibly adapt to different assembly spaces.

[0057] In some embodiments, the first transmission assembly 40 includes a first transmission member 41 and a second transmission member 42 that are connected in a transmission manner. The first transmission member 41 is connected in a transmission manner to the lock cylinder 10, and the second transmission member 42 is connected in a transmission manner to the transmission rod 30. The rotation axis of the first transmission member 41 intersects the rotation axis of the second transmission member 42, and the transmission rod 30 is indirectly connected in a transmission manner to the lock cylinder 10 through the first transmission member 41 and the second transmission member 42.

[0058] In one example, the lock cylinder 10 is directly connected to the first transmission member 41, for example, the lock cylinder 10 is directly and fixedly connected to the first transmission member 41, and the lock cylinder 10 and the first transmission member 41 rotate synchronously. In another example, the lock cylinder 10 is indirectly connected to the first transmission member 41.

[0059] In some embodiments, the first transmission assembly 40 further includes a third transmission member 43, which is connected to the lock cylinder 10 and meshes with the first transmission member 41. The number of teeth of the first transmission member 41 is greater than the number of teeth of the third transmission member 43 to increase the transmission ratio. The transmission rod 30 is indirectly connected to the lock cylinder 10 through the third transmission member 43, the first transmission member 41 and the second transmission member 42.

[0060] In this embodiment, the transmission ratio can be increased by cooperating with the first transmission member 41 through the third transmission member 43. Utilizing the mechanical characteristic of "speed reduction and torque increase," the small torque at the key end can be converted into a large torque on the transmission rod 30, thereby lowering the force threshold for the user to turn the key. Furthermore, the low-speed operation of the first transmission member 41 reduces component wear, thus extending the service life of the door unlocking mechanism 100.

[0061] For example, the rotation axis of the first transmission member 41, the rotation axis of the third transmission member 43, and the rotation axis of the lock cylinder 10 are parallel.

[0062] For example, the rotation axis of the first transmission member 41 is set horizontally, and the rotation axis of the transmission rod 30 extends along the height direction.

[0063] In some embodiments, the first transmission member 41, the second transmission member 42, and the third transmission member 43 are all gears, and the first transmission member 41, the second transmission member 42, and the third transmission member 43 mesh in sequence.

[0064] Figure 4 A schematic diagram of the structure of the first transmission member 41 provided for some embodiments of this application, with reference to Figure 4 In some embodiments, the first transmission member 41 has a first tooth 411 and a second tooth 412, which are located on opposite sides of the first transmission member 41 along its axial direction. The first transmission member 41 meshes with the third transmission member 43 through the first tooth 411 and with the second transmission member 42 through the second tooth 412. It can be understood that the first transmission member 41 is a double-toothed gear. This arrangement saves space and improves the transmission stability of the transmission assembly.

[0065] For example, the third transmission member 43 and the second transmission member 42 are located on both sides of the first transmission member 41 and engage with the first transmission member 41.

[0066] Figure 5 Partial structure of the door unlocking mechanism 100 provided in other embodiments of this application; Figure 6 for Figure 5 A structural diagram from another perspective; Figure 7 for Figure 6 Along the sectional view of AA, refer to Figures 5 to 7 In some embodiments, the lock cylinder 10 has a mounting shaft 11, the third transmission member 43 is fixedly connected to the mounting shaft 11, and the door unlocking mechanism 100 further includes a limiting member 50, which is disposed on the mounting shaft 11 and is used to limit the third transmission member 43 from moving away from the lock cylinder 10 along the axial direction of the mounting shaft 11.

[0067] Among them, the limiting member 50 is located on the side of the third transmission member 43 that is away from the lock cylinder 10.

[0068] In one example, the limiting element 50 is a retaining ring.

[0069] In some examples, a limiting groove is provided on the outer peripheral surface of the mounting shaft 11, and a portion of the limiting member 50 is embedded in the limiting groove. The limiting groove is used to limit the circlip movement along the axial direction of the mounting shaft 11.

[0070] In this embodiment, by setting a limiting member 50, the third transmission member 43 can be prevented from falling off the mounting shaft 11, thereby improving the installation stability of the third transmission member 43.

[0071] In some embodiments, the door unlocking mechanism 100 further includes a lock housing 60, within which the lock cylinder 10 is disposed. The lock housing 60 protects the lock cylinder 10 and provides a mounting base for the lock cylinder 10.

[0072] In some embodiments, the lock housing 60 is provided with a connection structure that connects to the door body 210.

[0073] Reference Figure 7In some embodiments, the lock cylinder 10 has a keyhole 12 for key insertion, and the lock housing 60 is provided with a first flange 61 on the side opposite to the keyhole 12. The first flange 61 is located on the side of the limiting member 50 opposite to the transmission rod 30. Along the radial direction of the lock cylinder 10, the projection of the first flange 61 at least partially overlaps with the projection of the limiting member 50.

[0074] In practical applications, the first flange 61 is located above the limiting member 50 and blocks the limiting member 50, thereby preventing illegal tools from being inserted into the door and window gap above to damage the limiting member 50, and thus preventing the door unlocking mechanism 100 from being illegally unlocked.

[0075] The first flange 61 can be provided in one or more, with at least one located above the limiting member 50 to block the limiting member 50.

[0076] For example, there are two first flanges 61, one on top and one on the bottom, and the limiting member 50 is located between the two first flanges 61.

[0077] Reference Figure 2 In some embodiments, the door unlocking mechanism 100 further includes a mounting base 80, and the first transmission member 41 and the second transmission member 42 are both disposed on the mounting base 80. The mounting base 80 can be connected to the door body 210.

[0078] In some embodiments, the mounting base 80 includes a first housing and a second housing, which are connected by a locking member, and define a space between the first housing and the second housing to accommodate the first transmission member 41 and the second transmission member 42.

[0079] Reference Figure 1 In some embodiments, the second transmission member 42 and the transmission rod 30 are connected by the first connecting shaft 33 to form a rotating pair.

[0080] To accommodate the interior space of the door 200, the lock cylinder 10 and lock body 20 are typically offset in the horizontal direction. In this embodiment, the second transmission member 42 and the transmission rod 30 are connected by the first connecting shaft 33 to form a rotating pair, which allows the second transmission member 42 and the transmission rod 30 to have a certain degree of swing freedom around the first connecting shaft 33. This not only accommodates the horizontally offset lock cylinder 10 and lock body 20, reducing assembly difficulty, but also avoids component wear caused by rigid constraints.

[0081] For example, the transmission rod 30 is provided with a spherical connecting portion at one end near the second transmission member 42, and the second transmission member 42 is provided with a hemispherical limiting portion at one end near the transmission rod 30. The spherical connecting portion of the transmission rod 30 is embedded in the hemispherical limiting portion of the second transmission member 42, and the first connecting shaft 33 passes through the hemispherical limiting portion of the second transmission member 42 and the spherical connecting portion of the transmission rod 30 to prevent the spherical connecting portion of the transmission rod 30 from disengaging from the hemispherical limiting portion of the second transmission member 42.

[0082] Reference Figure 1 and Figure 2 In some embodiments, the transmission rod 30 is provided with a first groove 31 extending along its axial direction, and the first connecting shaft 33 passes through the first groove 31. With this configuration, the first connecting shaft 33 can move along the first groove 31, thereby adjusting the distance between the second transmission member 42 and the transmission rod 30 and improving the compatibility of the transmission rod 30.

[0083] For example, the first groove 31 is provided at the spherical connection portion of the transmission rod 30 near the second transmission member 42.

[0084] Reference Figure 1 and Figure 2 In some embodiments, the door unlocking mechanism 100 further includes a lock body connector 70, one end of which is connected to the lock body 20, and the other end is connected to the transmission rod 30. It can be understood that the transmission rod 30 is indirectly connected to the lock body 20 through the lock body connector 70.

[0085] In some embodiments, the lock body connector 70 is plugged into the lock body 20. This configuration reduces the difficulty of assembling the lock body connector 70 and the lock body 20.

[0086] Reference Figure 1 and Figure 2 In some embodiments, the lock body connector 70 includes a connector body 71 and a second flange 72. The connector body 71 connects the lock body 20 and the transmission rod 30. The second flange 72 is disposed on the outer periphery of the connector body 71. The lock body 20 has a first connecting portion 74 connected to the connector body 71. Along the axial direction of the lock body connector 70, the projection of the second flange 72 at least partially overlaps with the projection of the first connecting portion 74.

[0087] In practical applications, the second flange 72 can block the first connecting part 74 from above, thereby preventing unauthorized tools from contacting the first connecting part 74 from above and preventing the lock body 20 from being forcibly unlocked from the car door 200.

[0088] The second flange 72 can partially or completely cover the first connecting portion 74. To improve the anti-theft effect, the second flange 72 can completely cover the first connecting portion 74.

[0089] In some embodiments, the first connecting part 74 is a slot, and the lock body connector 70 is inserted into the slot.

[0090] Reference Figure 1 In some embodiments, the lock body connector 70 and the transmission rod 30 are connected by a second connecting shaft 34 to form a rotating pair.

[0091] For example, a spherical connecting portion is provided at one end of the transmission rod 30 near the lock body connector 70, and a limiting portion is provided at one end of the lock body connector 70 and the transmission rod 30. The spherical connecting portion of the transmission rod 30 is embedded in the limiting portion of the lock body connector 70, and the second connecting shaft 34 passes through the limiting portion of the lock body connector 70 and the spherical connecting portion of the transmission rod 30 to prevent the spherical connecting portion of the transmission rod 30 from disengaging from the limiting portion of the lock body connector 70.

[0092] In this embodiment, the lock body connector 70 and the transmission rod 30 are connected by the second connecting shaft 34 to form a rotating pair, which allows the lock body connector 70 and the transmission rod 30 to have a certain degree of swing freedom around the second connecting shaft 34. This can accommodate the lock cylinder 10 and lock body 20 that are misaligned in the horizontal direction, reduce assembly difficulty, and avoid component wear caused by rigid constraints.

[0093] Reference Figure 2 In some embodiments, the lock body connector 70 is provided with a second slide groove 73 extending along its axial direction, and the second connecting shaft 34 passes through the second slide groove 73. This arrangement allows the second connecting shaft 34 to move along the second slide groove 73, thereby adjusting the distance between the lock body connector 70 and the transmission rod 30 and improving the compatibility of the transmission rod 30.

[0094] Figure 8 Structural schematic diagrams of the door 200 provided for some embodiments of this application, with reference to Figure 8 According to a second aspect of this application, a vehicle door 200 is provided, including the aforementioned vehicle door unlocking mechanism 100. Since the vehicle door 200 includes the vehicle door unlocking mechanism 100, the vehicle door 200 has all the beneficial effects of the vehicle door unlocking mechanism 100, which will not be elaborated here.

[0095] In some embodiments, the door 200 includes a door body 210, and the door unlocking mechanism 100 is hidden inside the door body 210. The lock cylinder 10 is disposed above the transmission rod 30, and the lock body 20 is disposed below the transmission rod 30.

[0096] Figure 9 Structural block diagrams of a vehicle 1000 provided for some embodiments of this application, with reference to Figure 9According to a third aspect of this application, a vehicle 1000 is provided, including the aforementioned door 200 or the aforementioned door unlocking mechanism 100. Since the vehicle 1000 includes the door unlocking mechanism 100, the vehicle 1000 has all the beneficial effects of the door unlocking mechanism 100, which will not be elaborated here.

[0097] The vehicle 1000 may be a gasoline-powered vehicle, a plug-in hybrid electric vehicle, or a new energy vehicle, etc., and this disclosure does not make any specific restrictions.

[0098] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0099] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0100] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0101] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A vehicle door unlocking mechanism, characterized in that, include Lock cylinder; Lock body; The transmission rod is connected to the lock cylinder at one end and to the lock body at the other end. The transmission rod is configured to rotate under the drive of the lock cylinder and thereby drive the lock body to unlock the car door.

2. The door unlocking mechanism according to claim 1, characterized in that, The door unlocking mechanism also includes: A first transmission assembly is provided, wherein the transmission rod and the lock cylinder are connected by the first transmission assembly, and the lock cylinder indirectly drives the transmission rod to rotate through the first transmission assembly.

3. The door unlocking mechanism according to claim 2, characterized in that, The first transmission assembly includes a first transmission component and a second transmission component that are connected by transmission. The first transmission component is connected to the lock cylinder, and the second transmission component is connected to the transmission rod. The rotation axis of the first transmission component intersects the rotation axis of the second transmission component. The transmission rod is indirectly connected to the lock cylinder through the first transmission component and the second transmission component.

4. The door unlocking mechanism according to claim 3, characterized in that, The first transmission assembly further includes a third transmission member, which is connected to the lock cylinder and meshes with the first transmission member. The number of teeth in the first transmission member is greater than the number of teeth in the third transmission member to increase the transmission ratio. The transmission rod is indirectly connected to the lock cylinder through the third transmission member, the first transmission member, and the second transmission member.

5. The door unlocking mechanism according to claim 4, characterized in that, The first transmission member has a first tooth and a second tooth, which are located on opposite sides of the first transmission member's axial direction. The first transmission member engages with the third transmission member through the first tooth and with the second transmission member through the second tooth.

6. The door unlocking mechanism according to claim 4, characterized in that, The lock cylinder has a mounting shaft, the third transmission component is disposed on the mounting shaft, and the door unlocking mechanism further includes: A limiting member, disposed on the mounting shaft, is used to limit the third transmission member from moving away from the lock cylinder along the axial direction of the mounting shaft.

7. The door unlocking mechanism according to claim 6, characterized in that, The door unlocking mechanism also includes a lock housing, and the lock cylinder is disposed within the lock housing.

8. The door unlocking mechanism according to claim 7, characterized in that, The lock cylinder has a keyhole for key insertion, and the lock shell has a first flange on the side opposite to the keyhole. The first flange is located on the side of the limiting member opposite to the transmission rod. Along the radial direction of the lock cylinder, the projection of the first flange at least partially overlaps with the projection of the limiting member.

9. The door unlocking mechanism according to claim 3, characterized in that, The second transmission component and the transmission rod are connected by a first connecting shaft to form a rotating pair.

10. The door unlocking mechanism according to claim 9, characterized in that, The transmission rod is provided with a first groove extending along its axial direction, and the first connecting shaft passes through the first groove.

11. The door unlocking mechanism according to any one of claims 1-10, characterized in that, The door unlocking mechanism also includes: The lock body connector is connected to the lock body at one end and to the transmission rod at the other end.

12. The door unlocking mechanism according to claim 11, characterized in that, The lock body connector is inserted into the lock body.

13. The door unlocking mechanism according to claim 11, characterized in that, The lock body connector includes a connector body and a second flange. The connector body connects the lock body and the transmission rod. The second flange is disposed on the outer periphery of the connector body. The lock body has a first connecting portion connected to the connector body. Along the axial direction of the lock body connector, the projection of the second flange at least partially overlaps with the projection of the first connecting portion.

14. The door unlocking mechanism according to claim 11, characterized in that, The lock body connector and the transmission rod are connected by a second connecting shaft to form a rotating pair.

15. The door unlocking mechanism according to claim 14, characterized in that, The lock body connector is provided with a second sliding groove extending along its axial direction, and the second connecting shaft passes through the second sliding groove.

16. A vehicle door, characterized in that, Includes the door unlocking mechanism as described in any one of claims 1-15.

17. A vehicle, characterized in that, Includes the vehicle door as described in claim 16 or the vehicle door unlocking mechanism as described in any one of claims 1-15.

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