Vehicle door handle and vehicle

Abstract

The invention relates to the technical field of vehicles, and discloses a vehicle door handle and a vehicle. The vehicle door handle comprises a base, a fixing piece, a rotating shaft, a rotating arm, a reset torsion spring, a handle and a self-locking mechanism; the fixing piece is fixed on the base; the rotating shaft is mounted on the fixing piece; the rotating arm is rotatably connected to the fixing piece through the rotating shaft, and the rotating arm is provided with a locking groove; the reset torsion spring is installed on the rotating shaft and connected with the fixing piece and the rotating arm. The handle is fixed on the rotating arm; the self-locking mechanism comprises a shell, an elastic piece and a ball, the shell is fixed to the base and located beside the rotating arm, and the shell is provided with a guide cavity and a communication opening; the elastic piece is arranged in the guide cavity; the ball is restrained in the guide cavity and can partially extend out through the communicating opening under the elastic action of the elastic piece so as to be jointed with the locking groove; through the joint of the self-locking mechanism and the locking groove, a clear mechanical backup passage can be constructed for the vehicle door handle, a key guarantee is provided for passenger evacuation and external rescue, and the safety is high.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and in particular to a door handle and a vehicle. Background Technology

[0002] As a crucial human-machine interface component in vehicles, the design of door handles not only affects appearance and aerodynamic drag but also directly impacts ease of use and safety. With the development of automotive electrification and intelligentization, different technological approaches have emerged for door handles.

[0003] One existing approach is to pursue an extremely simple, all-electric solution. This type of solution typically eliminates all mechanical connections between the exterior door handles and locks, relying entirely on electrical signals to control unlocking and ejection. However, in the event of a severe collision causing a complete power outage, or an extreme malfunction in the electronic control system, external personnel will be unable to unlock the doors mechanically, potentially hindering emergency evacuation or external rescue efforts and posing a safety hazard. Summary of the Invention

[0004] With the aim of at least solving one of the technical problems existing in the prior art, the present invention aims to provide a car door handle and a vehicle, wherein the car door handle has high security.

[0005] To achieve the above objectives, in a first aspect, the present invention provides a car door handle, comprising a base, a fixing member, a rotating shaft, a rotating arm, a return torsion spring, a handle, and a self-locking mechanism; the fixing member is fixed to the base; the rotating shaft is mounted on the fixing member; the rotating arm is rotatably connected to the fixing member via the rotating shaft, the rotating arm having a limiting outer wall surface, the limiting outer wall surface being provided with a locking groove; the return torsion spring is mounted on the rotating shaft and is respectively connected to the fixing member and the rotating arm; the handle is fixed to the rotating arm; the self-locking mechanism includes a housing, an elastic element, and a ball, the housing being fixed to the base and located beside the rotating arm, the housing having a guide cavity and a connection between the guide cavity and the lock The locking groove has a communicating opening; the elastic element is disposed within the guide cavity; the ball is constrained within the guide cavity and can extend through the communicating opening under the elastic force of the elastic element to engage with the locking groove; wherein, when the rotating arm is in the initial position, the ball is embedded in the locking groove under the elastic force of the elastic element to restrict the rotation of the rotating arm around the axis of the rotation shaft; when the operating force applied to the handle exceeds a first preset value, the rotating arm can overcome the reset torque of the reset torsion spring and the elastic force of the elastic element to squeeze the ball and cause the ball to exit the locking groove, thereby allowing the rotating arm to rotate around the axis of the rotation shaft.

[0006] In some embodiments, the locking groove is a spherical locking groove adapted to the spherical surface of the ball, and the depth of the spherical locking groove is less than the radius of the ball.

[0007] In some embodiments, after the ball retracts from the spherical locking groove, the ball is in tangential contact with the limiting outer wall surface and can roll as the rotating arm rotates about the axis of the rotating shaft.

[0008] In some embodiments, the connecting opening is a circular connecting opening, the diameter of which is smaller than the diameter of the ball and larger than the radius of the ball.

[0009] In some embodiments, the guide cavity includes a cylindrical cavity and a conical cavity connected in sequence, the end of the conical cavity away from the cylindrical cavity being open to form the connecting opening, and the inner diameter of the conical cavity gradually decreasing along the direction from the cylindrical cavity to the connecting opening.

[0010] In some embodiments, there are two rotating arms, which are symmetrically arranged on both sides of the rotation axis; there are two self-locking mechanisms, with one self-locking mechanism corresponding to each rotating arm.

[0011] In some implementations, the first preset value is 150N.

[0012] In some embodiments, the base includes a seat and a cover plate; the seat has an inwardly recessed receiving groove; the cover plate is fixedly connected to the seat and covers a portion of the receiving groove, such that the receiving groove is divided into a first subspace enclosed by the cover plate and the seat, and a second subspace formed by the openness of the seat; the handle includes a connecting portion and an operating portion connected to each other, the connecting portion being received within the first subspace, and the operating portion being located within the second subspace and exposed on the outer surface of the door; at least a portion of the rotating arm extends into the first subspace and is fixedly connected to the connecting portion.

[0013] In some embodiments, the base is provided with a mounting structure for fixing to the door sheet metal.

[0014] In a second aspect, the present invention also provides a vehicle including a door handle according to any of the preceding claims.

[0015] Compared with the prior art, the advantages of the door handle of this invention are as follows: (1) By engaging the self-locking mechanism with the locking groove, a clear mechanical backup path can be constructed for the door handle. In extreme cases where the vehicle loses power or the electronic control fails, the user can apply an operating force exceeding the first preset value to the handle, which will force the rotating arm to squeeze the ball out of the locking groove and rotate, thereby mechanically triggering the door lock. This provides key protection for occupant evacuation and external rescue, and is highly safe.

[0016] (2) When the vehicle is working normally, the ball is firmly embedded in the locking groove under the elastic force of the elastic element, and the rotating arm is firmly locked. When the user pulls the door, the handle is stable and without play, providing a direct and stable overall opening feeling. There is no need to overcome the unlocking stroke and resistance of the traditional structure first, providing a light and direct experience, which helps to reflect the convenience and advanced technology of electric unlocking. Attached Figure Description

[0017] Figure 1 This is a front view of a car door handle provided in an embodiment of the present invention; Figure 2 This is a cross-sectional view of a car door handle provided in an embodiment of the present invention; Figure 3 This is an exploded view of a car door handle provided in an embodiment of the present invention.

[0018] In the diagram, 1 is the base; 11 is the seat body; 12 is the cover plate; 111 is the receiving groove; 112 is the mounting structure; 1111 is the first subspace; and 1112 is the second subspace. 2. Fasteners; 3. Rotation axis; 4. Rotary arm; 41. Limiting outer wall surface; 411. Locking groove; 5. Return torsion spring; 6. Handle; 61. Connecting part; 62. Operating part; 7. Self-locking mechanism; 71. Housing; 72. Elastic element; 73. Ball bearing; 711. Guide cavity; 712. Housing body; 713. Enclosing plate; 7111. Cylindrical cavity; 7112. Conical cavity; 7113. Connecting opening. Detailed Implementation

[0019] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0020] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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, they should not be construed as limitations on this invention.

[0021] 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 of that feature.

[0022] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having" and any variations thereof in the description, claims and foregoing drawings of this application are intended to cover non-exclusive inclusion.

[0025] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0026] As a crucial human-machine interface component in vehicles, the design of door handles not only affects appearance and aerodynamic drag but also directly impacts ease of use and safety. With the development of automotive electrification and intelligentization, different technological approaches have emerged for door handles.

[0027] One approach is a purely electric solution that pursues ultimate simplicity. This type of solution typically eliminates all mechanical connections between the exterior door handle and the lock, relying entirely on electrical signals to control unlocking and ejection. However, in the event of a severe collision causing a complete power outage or an extreme malfunction in the electronic control system, external personnel will be unable to unlock the doors mechanically, potentially hindering emergency evacuation or external rescue and posing a safety hazard. Another approach is to adapt electric unlocking functionality to traditional mechanical handles. However, this type of solution often retains the original mechanical linkage structure, requiring users to overcome significant resistance and complete a noticeable mechanical unlocking stroke before pulling the door. This contradicts the "lightweight and direct" experience that electric unlocking systems aim for, failing to showcase their technological and convenience advantages. Simply increasing the force of the return torsion spring to maintain handle stability while powered on leads to assembly difficulties, shortened component fatigue life, and a heavy feel. Furthermore, regardless of the new design adopted, the door handle, as part of the vehicle's exterior trim, must be fully compatible with the existing door sheet metal's shape, openings, and mounting interface (i.e., "A-side matching") to avoid modifying the already established high-cost molds. This places stringent requirements on the integration and sophistication of the new structure.

[0028] like Figures 1 to 3 As shown, in a first aspect, a preferred door handle provided by an embodiment of the present invention includes a base 1, a fixing member 2, a rotating shaft 3, a rotating arm 4, a reset torsion spring 5, a handle 6, and a self-locking mechanism 7.

[0029] The fixing member 2 is fixed to the base 1; the rotating shaft 3 is installed on the fixing member 2; the rotating arm 4 is rotatably connected to the fixing member 2 through the rotating shaft 3, and the rotating arm 4 has a limiting outer wall surface 41, the limiting outer wall surface 41 is provided with a locking groove 411; the reset torsion spring 5 is installed on the rotating shaft 3 and is connected to the fixing member 2 and the rotating arm 4 respectively, and is used to provide the rotating arm 4 with a reset torque toward the initial position; the handle 6 is fixed to the rotating arm 4.

[0030] The self-locking mechanism 7 includes a housing 71, an elastic element 72, and a ball 73. The housing 71 is fixed to the base 1 and located beside the rotating arm 4. The housing 71 has a guide cavity 711 and a connecting opening 7113 connecting the guide cavity 711 and the locking groove 411. The elastic element 72 is located in the guide cavity 711. The ball 73 is constrained in the guide cavity 711 and can partially extend through the connecting opening 7113 under the elastic force of the elastic element 72 to engage with the locking groove 411. When the rotating arm 4 is in the initial position, the ball 73 is embedded in the locking groove 411 under the elastic force of the elastic element 72 to restrict the rotation of the rotating arm 4 around the axis of the rotating shaft 3. When the operating force applied to the handle 6 exceeds a first preset value, the rotating arm 4 can overcome the reset torque of the reset torsion spring 5 and the elastic force of the elastic element 72 to squeeze the ball 73 and make the ball 73 exit the locking groove 411, thereby allowing the rotating arm 4 to rotate around the axis of the rotating shaft 3.

[0031] By engaging the self-locking mechanism 7 with the locking groove 411, a clear mechanical backup path can be constructed for the door handle. In extreme conditions such as a complete power outage or electronic control failure, the user can apply an operating force exceeding the first preset value to the handle 6 to force the rotating arm 4 to squeeze the ball 73 out of the locking groove 411 and rotate, thereby mechanically triggering the door lock. This provides crucial protection for occupant evacuation and external rescue, ensuring high safety.

[0032] When the vehicle is working normally, the ball bearing 73 is firmly embedded in the locking groove 411 under the elastic force of the elastic element 72, and the rotating arm 4 is firmly locked. When the user pulls the door, the handle 6 is stable and without play, providing a direct and stable overall pulling feeling. There is no need to overcome the unlocking stroke and resistance of the traditional structure first, providing a light and direct experience, which helps to reflect the convenience and high-tech feel of electric unlocking.

[0033] The present invention relies on the mechanical interlock of the self-locking mechanism 7 to fix the rotating arm 4 in the normal state, rather than relying on a significant increase in the torque of the return torsion spring 5. Therefore, the return torsion spring 5 can be optimized to provide a smooth return function, and the torque value of the return torsion spring 5 can be kept at a low level, thereby avoiding problems such as assembly difficulties, shortened fatigue life of parts, and heavy operating feel caused by excessive force of the return torsion spring 5.

[0034] The self-locking mechanism 7 is a highly integrated modular unit with a simple structure and compact size. This allows the invention to be directly integrated into the existing door handle assembly without changing the original mounting interface, openings, and gap differences between the handle and the body sheet metal (A-side). This meets the stringent requirement of "A-side matching," avoids modifying expensive molds, and reduces upgrade costs and development cycles.

[0035] In this embodiment, the self-locking mechanism 7 has dimensions of 12mm*16mm*16.5mm (length*width*height), and the total weight of one self-locking mechanism 7 is about 10 grams, which is lightweight; one self-locking mechanism 7 costs about 0.5 yuan, which is low cost.

[0036] In this embodiment, the elastic element 72 is a compression spring.

[0037] In other embodiments, the elastic element 72 may also be, but is not limited to, wave springs, disc springs, elastic rubber, shape memory alloy springs, etc.

[0038] In this embodiment, the ball 73 is a stainless steel ball with a polished surface (roughness Ra≤0.05μm) to ensure smooth rolling, corrosion resistance, and low wear. In other embodiments, the ball 73 may also be, but is not limited to, high-strength alloy steel balls, ceramic balls, etc.

[0039] In this embodiment, there are two rotating arms 4, symmetrically arranged on both sides of the rotating shaft 3; there are also two self-locking mechanisms 7, with one self-locking mechanism 7 corresponding to each rotating arm 4. By setting two rotating arms 4 and two self-locking mechanisms 7, and symmetrically arranging the two rotating arms 4 on both sides of the rotating shaft 3, the operating force applied by the user when pulling the handle 6 can be evenly distributed by the self-locking mechanisms 7 on both sides, avoiding the deflection of the rotating arm 4 or the lifting of the front end of the handle 6 due to force on one side. Furthermore, this symmetrical structure can prevent uneven gaps, surface differences, or abnormal noises between the handle 6 and the outer door panel, ensuring a high degree of consistency in the Class A appearance. At the same time, the two self-locking mechanisms 7 can improve the reliability of the self-locking mechanism; even if one side of the mechanism occasionally jams during emergency opening, the other side can still provide a backup unlocking path, further enhancing the system's safety redundancy.

[0040] In this embodiment, the reset torsion spring 5 is a center-fixed reset torsion spring 5. The middle coil of the center-fixed reset torsion spring 5 is fixed to the fixing member 2, and the two free ends of the center-fixed reset torsion spring 5 act on two independent rotating arms 4 respectively, providing them with reset torques in opposite directions.

[0041] In this embodiment, the first preset value is 150N. This ensures that the door handle remains stationary under normal electric unlocking conditions, while allowing for mechanical unlocking via manual operation in emergency situations due to power failure.

[0042] Setting the first preset value to 150N is both significantly higher than the force a user typically exerts when lightly pulling the handle 6 (usually 60–100N), preventing the handle 6 from spinning freely due to accidental contact or inertia when the electric unlock is already unlocked, thus highlighting the "seamless opening" technological experience of the electric unlock; and lower than the maximum emergency operating force allowed by ergonomics (generally not exceeding 200N), ensuring that even in extreme conditions such as a power outage, an average adult can still reliably apply force to complete the mechanical unlocking. Therefore, setting the first preset value to 150N balances intelligent convenience with passive safety redundancy.

[0043] See Figures 1 to 2 The door handle provided by the present invention is a semi-concealed door handle. Specifically, the base 1 includes a seat body 11 and a cover plate 12; the seat body 11 is provided with an inwardly recessed receiving groove 111. The cover plate 12 is fixedly connected to the seat 11 and covers a portion of the receiving groove 111, such that the receiving groove 111 is divided into a first subspace 1111 formed by the cover plate 12 and the seat 11 together, and a second subspace 1112 formed by the seat 11 being open; the handle 6 includes a connecting part 61 and an operating part 62 connected to each other, the connecting part 61 is housed in the first subspace 1111, and the operating part 62 is located in the second subspace 1112 and exposed on the outer surface of the door; at least a portion of the rotating arm 4 extends into the first subspace 1111 and is fixedly connected to the connecting part 61.

[0044] By combining the base 1, which is constructed as a seat 11 with a receiving groove 111, with a partially covered cover 12, and concealing the connecting part 61 of the handle 6 within the first sub-space 1111 enclosed by the cover 12, the operating part 62 is only exposed from the open second sub-space 1112. The semi-concealed door handle ensures that the handle 6 is entirely within the receiving groove 111 when not in use, with no protrusions or gaps exposed, improving the visual simplicity and aerodynamic performance of the vehicle side. At the same time, since the handle 6 is completely built into the receiving groove 111, there is no need for additional exposed mounting brackets or swivel arm 4 structures, avoiding damage to the A-class exterior surface. This allows the handle to be directly adapted to the outer panel molds of existing models without the need to redevelop A-class parts, reducing the cost of platform application and perfectly balancing high-end design and engineering feasibility.

[0045] It should be noted that the base 1 is provided with a clearance hole that connects to the first subspace 1111. At least part of the rotating arm 4 extends into the first subspace 1111 through the clearance hole, so that the rotating arm 4 has sufficient space to move when rotating around the rotation axis 3, so as to avoid interference with the solid structure of the base 1.

[0046] In this embodiment, the fastener 2 is fixed to the base 11.

[0047] In this embodiment, the housing 71 is connected to the base 11.

[0048] The base 1 is provided with a mounting structure 112 for fixing to the sheet metal of the car door.

[0049] By setting a mounting structure 112 on the base 1 for fixing to the door sheet metal, the entire door handle can be firmly and stably integrated into the inner structure of the door, effectively withstanding the pulling force during user operation, the vibration load during vehicle operation, and the impact force under extreme conditions, ensuring no loosening or abnormal noise during long-term use; at the same time, the mounting structure 112 is compatible with the existing door sheet metal mounting interface, without the need for additional drilling or reinforcement of the body structure, which facilitates rapid adaptation and co-production on different vehicle platforms, improving the versatility of parts and manufacturing economy.

[0050] In this embodiment, the mounting structure 112 is a screw hole, and the screw hole is located in the base 11.

[0051] In other embodiments, the mounting structure 112 may also be, but is not limited to, a snap-fit ​​structure, a welding boss, a riveting post, a riveting hole, etc.

[0052] See Figure 2 The locking groove 411 is a spherical locking groove 411 adapted to the spherical surface of the ball 73, and the depth of the spherical locking groove 411 is less than the radius of the ball 73. The spherical locking groove 411 can form a large-area, highly fitted contact with the spherical surface of the ball 73, so that the ball 73 can be evenly and stably locked into the spherical locking groove 411 under the action of the elastic element 72. Compared with V-groove or planar contact, this surface contact can provide better holding force, prevent the rotating arm 4 from rotating accidentally due to vibration or slight external force, and ensure the stability of the handle height under normal power-on conditions.

[0053] Because the spherical locking groove 411 is relatively shallow (less than the radius of the ball 73), the ball 73 does not sink into the spherical locking groove 411, but rather straddles its edge. When emergency unlocking is required, the applied operating force allows the rotating arm 4 to relatively easily squeeze the ball 73, causing the ball 73 to smoothly crawl out of the spherical locking groove 411 along its inner spherical surface. This results in a faster and smoother transition from jammed friction to rolling friction, reducing the jarring sensation required for unlocking in emergencies, making the operating force more linear, and providing a better user experience.

[0054] It should be noted that the spherical locking groove 411 refers to a portion of the inner surface of the locking groove 411 that matches the spherical surface of the ball 73. Thus, when the ball 73 is embedded under the action of the elastic member 72, the outer surface of the ball 73 and the inner surface of the locking groove 411 form a large area of ​​close spherical contact.

[0055] Preferably, the depth of the spherical locking groove 411 is h, satisfying: 0.8mm ≤ h ≤ 1.5mm. When the groove depth is less than 0.8mm, the ball bearing 73 is not deeply embedded, making it prone to accidental unlocking due to vehicle vibration or slight external force, affecting the stability of the handle 6 in electric unlocking mode. When the groove depth exceeds 1.5mm, the ball bearing 73 is over-encased, increasing the operating force required for unlocking, which may exceed the upper limit of emergency operating force allowed by ergonomics (usually ≤200N), making it difficult to manually open the door in emergency situations such as power outages. The preferred depth of the spherical locking groove 411 is between 0.8mm and 1.5mm. This allows the ball bearing 73 to obtain sufficient positioning constraint to maintain reliable self-locking in daily use, while also allowing it to smoothly slide out of the groove when an operating force of 150N-200N is applied, achieving smooth and controllable mechanical unlocking. This balances safety, ease of operation, and long-term reliability.

[0056] In this embodiment, the groove depth h of the spherical locking groove 411 is 1 mm. The unlocking force is approximately 150 N. A good balance is achieved between self-locking reliability and smooth emergency opening.

[0057] The connecting opening 7113 is a circular connecting opening 7113. The diameter of the circular connecting opening 7113 is smaller than the diameter of the ball 73, but larger than the radius of the ball 73. This allows the ball 73 to partially extend under the action of the elastic member 72 and engage with the locking groove 411, while preventing the ball 73 from dislodging from the housing 71.

[0058] By limiting the diameter of the circular connecting opening 7113 to a range greater than the radius of the ball bearing 73 but smaller than its diameter, the ball bearing 73 can partially extend out of the housing 71 under the push of the elastic element 72 and reliably embed into the locking groove 411 on the rotating arm 4, achieving a stable self-locking function. Simultaneously, because the diameter of the circular connecting opening 7113 is smaller than the overall diameter of the ball bearing 73, the ball bearing 73 is effectively constrained within the guide cavity 711 of the housing 71, preventing it from falling off due to vibration or impact during assembly, transportation, or long-term use. This dimensional fit balances self-locking reliability and structural safety, ensuring both the static stability of the handle 6 in electric unlocking mode and the smooth retraction of the ball bearing 73 during emergency mechanical opening, thus improving the overall operational reliability and durability.

[0059] After the ball bearing 73 exits the spherical locking groove 411, it makes tangential contact with the limiting outer wall surface 41 and can roll as the rotating arm 4 rotates around the axis of the rotating shaft 3. In this way, the ball bearing 73 changes from a static locked state in the spherical locking groove 411 to a tangential rolling state with the spherical surface of the rotating arm 4, changing the resistance dominated by sliding friction between the ball bearing 73 and the rotating arm 4 to the resistance dominated by rolling friction. The coefficient of rolling friction is much smaller than the coefficient of sliding friction, which allows the user to smoothly complete the entire door opening action with a much smaller continuous force after overcoming the initial unlocking force (first preset value), reducing the physical burden on the operator in emergency situations.

[0060] The tangential contact between the ball bearing 73 and the limiting outer wall surface 41 can avoid possible sharp-angle interference or local biting between the ball bearing 73 and the limiting outer wall surface 41 of the rotating arm 4. The smooth rolling motion replaces the unstable sliding and jumping, making the rotation process of the rotating arm 4 stable, quiet and without stepping sensation. This helps to optimize the user experience under extreme working conditions, and also reduces the impact on the self-locking mechanism 7, extending the service life of the self-locking mechanism 7.

[0061] See Figure 2 The guide cavity 711 includes a cylindrical cavity 7111 and a conical cavity 7112 connected in sequence. The end of the conical cavity 7112 away from the cylindrical cavity 7111 is open to form a connecting opening 7113. The inner diameter of the conical cavity 7112 gradually decreases along the direction from the cylindrical cavity 7111 to the connecting opening 7113.

[0062] By setting a conical cavity 7112 with a gradually decreasing inner diameter in the guide cavity 711, and forming a connecting opening 7113 at the small end of the conical cavity 7112, the ball 73 can automatically center along the conical surface of the conical cavity 7112 and extend smoothly when it moves toward the locking groove 411 under the push of the elastic element 72. This helps to avoid jamming or uneven wear caused by assembly deviations or manufacturing tolerances. At the same time, when the rotating arm 4 is forced to push the ball 73 back, the ball 73 first enters the gradually expanding conical section and then the cylindrical section. This structure provides a smooth transition space, reduces the unlocking resistance, and improves the operating feel. In addition, the conical cavity 7112 also acts as a limiter to prevent the ball 73 from shaking and producing abnormal noise when not in operation, thus improving the durability and NVH performance of the self-locking mechanism 7.

[0063] See Figure 3 The housing 71 includes a housing body 712 and a closing plate 713. The housing body 712 is fixed to the base 1. The housing body 712 has a guide cavity 711. The end of the guide cavity 711 away from the connecting opening 7113 is also an opening. The closing plate 713 is detachably connected to the housing body 712 and covers the opening of the guide cavity 711 away from the connecting opening 7113.

[0064] The door handle provided by this invention has two operating modes: the first is the normal electric unlocking mode, and the second is the emergency mechanical unlocking mode.

[0065] Preferably, the unlocking angle of the emergency mechanical unlocking mode is between 30° and 45°.

[0066] In this embodiment, the rotating arm 4 is raised 40° around the rotating axis 3, which will cause the pull rod to move down and trigger the mechanical lock body of the door to complete the unlocking; that is, the unlocking angle of the emergency mechanical unlocking mode is 40°.

[0067] In some other embodiments, the unlocking angle of the emergency mechanical unlocking mode can also be 30°, 31°, 32°, 33°, 34°, 35°, 36°, 37°, 38°, 39°, 41°, 42°, 43°, 44°, 45°, etc.

[0068] The normal electric unlocking mode of the car door handle provided by this invention is as follows: After the vehicle is unlocked by electric means such as remote control, keyless entry, or touch sensing, the door lock body is already in the unlocked state. At this time, the user puts his hand into the second subspace 1112 and grasps the operating part 62 of the handle 6, applying a pulling force of 60N-100N to directly open the car door. During this process, since the car door is unlocked, the handle 6 only needs to overcome the resistance of the door seal and slight inertia, without triggering the mechanical unlocking mechanism. The rotating arm 4 remains in the initial position, the ball bearing 73 is always embedded in the locking groove 411, and the handle 6 as a whole does not rotate.

[0069] The emergency mechanical unlocking mode of the car door handle provided by this invention is as follows: In emergency situations such as vehicle power failure or electric unlocking system malfunction, the user can still reach into the second subspace 1112 and grasp the operating part 62 of the handle 6, applying an operating force greater than 150N to pull the handle 6 upward. This force is transmitted to the rotating arm 4 through the handle 6, causing the rotating arm 4 to overcome the reset torque of the reset torsion spring 5 and the pushing force of the elastic element 72 on the ball 73, squeezing the ball 73 to disengage it from the spherical locking groove 411; subsequently, the rotating arm 4 rotates upward about 40° around the rotation axis 3, causing the pull rod to move downward and triggering the car door mechanical lock body to complete the unlocking, thereby opening the car door.

[0070] In a second aspect, the present invention also provides a vehicle including a door handle according to any of the preceding claims.

[0071] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A car door handle, characterized in that, include: Base; The fastener is fixed to the base; A rotating shaft is mounted on the fixing member; A rotating arm is rotatably connected to the fixing member via the rotating shaft. The rotating arm has a limiting outer wall surface, and the limiting outer wall surface is provided with a locking groove. A reset torsion spring is installed on the rotating shaft and connected to the fixing member and the rotating arm respectively; The handle is fixed to the rotating arm; The self-locking mechanism includes a housing, an elastic element, and a ball bearing. The housing is fixed to the base and located beside the rotating arm. The housing has a guide cavity and a communicating opening connecting the guide cavity and the locking groove. The elastic element is disposed in the guide cavity. The ball bearing is constrained in the guide cavity and can extend through the communicating opening under the elastic force of the elastic element to engage with the locking groove. When the rotating arm is in its initial position, the ball is embedded in the locking groove under the elastic force of the elastic element to restrict the rotation of the rotating arm around the axis of the rotating shaft. When the operating force applied to the handle exceeds a first preset value, the rotating arm can overcome the reset torque of the reset torsion spring and the elastic force of the elastic element to squeeze the ball and make the ball exit the locking groove, thereby allowing the rotating arm to rotate around the axis of the rotating shaft.

2. The door handle according to claim 1, characterized in that, The locking groove is a spherical locking groove that is adapted to the spherical surface of the ball, and the depth of the spherical locking groove is less than the radius of the ball.

3. The door handle according to claim 2, characterized in that, After the ball retracts from the spherical locking groove, the ball is in tangential contact with the limiting outer wall surface and can roll when the rotating arm rotates around the axis of the rotating shaft.

4. The door handle according to claim 1, characterized in that, The connecting opening is a circular connecting opening, the diameter of which is smaller than the diameter of the ball and larger than the radius of the ball.

5. The door handle according to claim 1, characterized in that, The guide cavity includes a cylindrical cavity and a conical cavity connected in sequence. The end of the conical cavity away from the cylindrical cavity is open to form the connecting opening. The inner diameter of the conical cavity gradually decreases along the direction from the cylindrical cavity to the connecting opening.

6. The door handle according to claim 1, characterized in that, The number of rotating arms is two, and the two rotating arms are symmetrically arranged on both sides of the rotating shaft; the number of self-locking mechanisms is two, and each rotating arm is equipped with one self-locking mechanism.

7. The door handle according to claim 1, characterized in that, The first preset value is 150N.

8. The door handle according to any one of claims 1-7, characterized in that, The base includes a seat body and a cover plate; The base is provided with an inwardly recessed receiving groove; The cover plate is fixedly connected to the base and covers a portion of the receiving groove, such that the receiving groove is divided into a first subspace enclosed by the cover plate and the base, and a second subspace formed by the openness of the base. The handle includes a connecting part and an operating part that are connected to each other. The connecting part is housed in the first subspace, and the operating part is located in the second subspace and exposed on the outer surface of the door. At least a portion of the rotating arm extends into the first subspace and is fixedly connected to the connecting portion.

9. The door handle according to claim 1, characterized in that, The base is provided with a mounting structure for fixing to the door sheet metal.

10. A vehicle, characterized in that, Including the door handle according to any one of claims 1-9.

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