Unlocking and locking device, vehicle door and vehicle

Abstract

The invention relates to an unlocking and locking device, a vehicle door and a vehicle, belongs to the technical field of vehicles, and aims to solve the technical problem that friction force generated in the using process of an unlocking and locking device in the prior art affects the use experience. The unlocking and locking device comprises a handle, a contact piece and an execution piece, the handle comprises a grab handle part and a linkage part which are connected, the contact piece is connected to the surface of one side of the linkage part, and the grab handle part can drive the linkage part to drive the contact piece to move; the execution piece comprises a transmission part used for making contact with the contact piece and an unlocking part used for being connected with a lock cylinder of the lock body, and the contact piece can make contact with the transmission part when moving so as to drive the unlocking part to drive the lock cylinder to move. Wherein the part, used for making contact with the transmission part, of the contact piece is a contact part, at least one of the transmission part and the contact part comprises a solid lubricating material, and the solid lubricating material at least forms a partial area, used for making contact with the other one, of one of the transmission part and the contact part.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, specifically to unlocking and locking devices, doors, and vehicles. Background Technology

[0002] In vehicle door lock systems, door handles are typically connected to the door lock via an unlocking / locking device to enable the door to lock and unlock. During the actual operation of this unlocking / locking device, friction inevitably occurs between the internal moving parts.

[0003] In related technologies, to reduce the impact of the aforementioned friction on the locking / unlocking device, a lubricant is typically added between the surfaces of the two components that move relative to each other in the locking / unlocking device, thereby reducing frictional resistance through the lubricating medium. However, due to the structural complexity of the locking / unlocking device and the diversity of vehicle usage environments, door handles still generate significant friction during use, affecting the user experience for drivers and passengers. Summary of the Invention

[0004] The purpose of this application is to provide an unlocking and locking device, a door, and a vehicle to solve the technical problem in the related art where the friction generated during the use of the unlocking and locking device affects the user experience.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0006] According to a first aspect of this application, this application provides an unlocking and locking device, which includes a handle, a contact member, and an actuator. The handle includes a grip portion and a linkage portion connected together. The contact member is connected to one side surface of the linkage portion. The grip portion can drive the linkage portion to drive the contact member to move. The actuator includes a transmission portion for contacting the contact member and an unlocking portion for connecting to the lock cylinder of the lock body. When the contact member moves, it can contact the transmission portion to drive the unlocking portion to drive the lock cylinder to move.

[0007] The portion of the contact element that contacts the transmission part is called the contact portion. At least one of the transmission part and the contact portion includes a solid lubricating material, and the solid lubricating material forms at least one of the transmission part and the contact portion in a portion area that contacts the other.

[0008] Based on the aforementioned technical means, this application integrates solid lubricating materials directly into the contact or transmission parts, thus integrating the lubricating medium with the component surface and avoiding the drawbacks of relying on external additions and the ease of wear and tear of lubricants. The solid lubricating material exists in the form of coatings, inlays, or composite moldings, and can always adhere to the friction interface, forming a durable and stable lubricating layer. This avoids the problem of lubricating medium loss preventing friction reduction, further improving the user experience.

[0009] The solid lubricant material is integrated with the contact components, eliminating the need for regular lubricant replenishment or replacement, thus reducing maintenance costs. Furthermore, the lubricant layer wears at a low rate as the contact and actuator components wear, achieving long-lasting lubrication and extending the service life of the contact and actuator components. This makes it suitable for high-frequency use scenarios and avoids frequent repairs due to lubrication failure.

[0010] In one possible implementation, the material of the transmission part includes plastic, graphite, and fiber; and / or, the material of the contact part includes plastic, graphite, and fiber.

[0011] According to the above-mentioned technical means, graphite and fibers can form a slip layer on the surfaces of the transmission part and the contact part. During the friction process, graphite will continuously release tiny flake particles to the contact surface to form a dynamically replenished lubricating film. Even if the surface is worn, the lubrication effect can be maintained, thereby achieving the effect of self-replenishing lubricant for the transmission part and the contact part.

[0012] In one possible implementation, the graphite is flake graphite; and / or, the graphite comprises a plurality of graphite grains having a grain size greater than or equal to 3 μm and less than or equal to 22 μm.

[0013] Based on the above-mentioned technical means, the unique layered crystal structure of flake graphite makes it easy to slide along the crystal surface during friction, forming a directional lubricating film.

[0014] In one possible implementation, the fiber includes at least one of carbon fiber and glass fiber.

[0015] Based on the above-mentioned technical means, the graphite microcrystalline layer on the surface of carbon fiber can form a synergistic lubrication with flake graphite, further reducing the coefficient of friction.

[0016] In one possible implementation, the mass fraction ratio of plastic, graphite, and fiber in the actuator or contact is 85:10:5.

[0017] Based on the above technical means, under this ratio, a balance between material function and process cost is achieved through the lubrication-dominant role of graphite, the structural reinforcement of fibers, the interfacial bonding of plastics, and the structural shaping. This can extend the service life of actuators and contact parts and reduce the maintenance frequency of both.

[0018] In one possible implementation, at least one of the transmission part and the contact part has a plurality of spaced storage holes on its surface facing the other; the unlocking device also includes a lubricant, which is contained in the storage holes.

[0019] Based on the aforementioned technical means, the storage hole can store lubricant in the pores of the contact surface, forming a "long-lasting lubrication source" to continuously replenish lubrication and avoid frequent maintenance. As a "storage chamber" for lubricant, the storage hole allows lubricant to be slowly released from the hole and cover the contact surface due to friction and compression when the contact part and the transmission part move relative to each other, thus forming a continuous lubrication effect.

[0020] In one possible implementation, the lubricant is a solid lubricant.

[0021] According to the above-mentioned technical means, the solid lubricant exists in the form of powder or granules and will not be lost due to evaporation, leakage, or high-temperature liquefaction. The storage hole can stabilize the solid lubricant on the contact surface, and even under vibration, high load, or repeated friction, it can still slowly release lubricating particles through contact compression to form a continuous "solid lubricating film".

[0022] In one possible implementation, the surface of the transmission unit facing the contact unit includes a first surface area for contacting the contact unit, and the plurality of storage holes include a plurality of first storage holes disposed in the first surface area. The portion of the first storage holes in the first surface area is greater than 8% and less than 22% of the total area of ​​the first surface area.

[0023] Insufficient number of storage holes limits the total amount of solid lubricant (such as graphite particles) that can be stored, resulting in a low concentration of lubricating particles per unit area of ​​the friction surface and making it difficult to form a continuous transfer film. Conversely, excessively dense storage holes lead to insufficient thickness of the matrix material between adjacent holes, causing the solid lubricant to leak out rapidly during extrusion release, thus shortening the lubrication cycle. Based on the above technical means, this application ensures that the lubricant within the storage holes can achieve a good and continuous lubrication effect by limiting the area occupied by the first storage hole on the first surface region.

[0024] In one possible implementation, the surface of the contact portion facing the transmission portion includes a second surface region for contacting the transmission portion, and the plurality of storage holes include a plurality of second storage holes disposed in the second surface region. The portion of the second storage holes in the second surface region is greater than or equal to 8% of the total area of ​​the second surface region and less than or equal to 22% of the total area of ​​the second surface region.

[0025] Insufficient number of storage holes limits the total amount of solid lubricant (such as graphite particles) that can be stored, resulting in a low concentration of lubricating particles per unit area of ​​the friction surface and making it difficult to form a continuous transfer film. Conversely, excessively dense storage holes lead to insufficient matrix material thickness between adjacent holes, causing solid lubricant to leak out rapidly during extrusion release, thus shortening the lubrication cycle. Based on the above technical means, this application limits the area occupied by the second storage hole on the second surface region to ensure that the lubricant within the storage hole can achieve a good and continuous lubrication effect.

[0026] In one possible implementation, the diameter of the storage hole is greater than or equal to 40 μm and less than or equal to 220 μm.

[0027] Based on the above-mentioned technical means, this application can ensure the stability of the hole structure during the wear process under reciprocating friction conditions.

[0028] In one possible implementation, the contact portion and the transmission portion are connected by a toothed drive.

[0029] Based on the above-mentioned technical means, the contact part and the transmission part can achieve transmission through a compact structure.

[0030] In one possible implementation, the actuator includes a first transmission member for contacting the contact member. The first transmission member has a recess, a portion of the contact member is accommodated in the recess, the portion of the contact member that contacts the recess forms a contact portion, and the portion of the recess that contacts the contact member forms a transmission portion.

[0031] According to the above technical means, the groove wall of the recessed part constrains the contact element, and the bottom plane of the groove restricts axial displacement, so as to prevent the contact element from shifting during transmission.

[0032] In one possible implementation, the actuator further includes a second transmission member, which has an unlocking part. The second transmission member is located on the periphery of the first transmission member, and the periphery of the first transmission member can contact the periphery of the second transmission member when moving to drive the second transmission member to move. There are multiple transmission members, and the multiple transmission members include the periphery of the first transmission member and the periphery of the second transmission member.

[0033] According to the above-mentioned technical means, through the transmission between the first transmission component and the second transmission component, the second transmission component can transmit the force of the user pulling the handle to the door lock to open the door lock.

[0034] In one possible implementation, the recessed portion mates with a portion of the contact member that is housed within the recessed portion, such that the portion moves within the recessed portion along an involute track.

[0035] According to the above technical means, the recessed part and the part of the contact element housed in the recessed part form an involute mating structure, so that the contact element moves along the involute track in the recessed part. Through the unique continuous curvature change characteristics of the involute, the recessed part is guided to move along the involute trajectory, dispersing the contact stress during the movement process, reducing the stress concentration phenomenon caused by the sudden change of trajectory, and improving the smoothness of the component movement and the durability of the structure.

[0036] In one possible implementation, the involute track includes multiple sequentially connected arc-shaped tracks with continuously changing curvature. The linkage drives the contact part to move on the involute track. Along the direction in which the linkage drives the contact part to drive the actuator to unlock the lock body, the radius of curvature of the involute corresponding to the multiple arc-shaped tracks gradually increases.

[0037] According to the above technical means, the involute curvature radius of multiple arc-shaped tracks gradually increases to achieve gradient release of motion stress through smooth transition of curvature. Along the direction of the linkage part driving the contact part to drive the actuator to unlock the lock body, the curvature radius of the arc-shaped track gradually increases, so that when the contact part moves in the recess, the normal pressure angle of the contact point continuously decreases, and the contact stress decreases linearly with the increase of curvature radius, avoiding stress concentration caused by sudden curvature changes.

[0038] According to the second aspect of this application, a car door is provided, the car door including the unlocking and locking device mentioned in any of the above embodiments, the lock body being a car door lock, the car door also including a car door housing, the car door housing having an opening, a contact member and an actuator being disposed inside the car door housing, a handle being rotatably connected to the car door housing, and the handle being used to cover the opening.

[0039] Based on the above-mentioned technical means, by integrating the contact and actuator of the locking / unlocking device into the door housing, and rotating the handle to the housing to cover the opening, a compact and highly protective overall structure is formed.

[0040] According to a third aspect of this application, a vehicle is provided that includes the unlocking and locking device mentioned in any of the above embodiments, or the vehicle includes the aforementioned door.

[0041] Based on the aforementioned technical means, in terms of safety, the involute track design of the locking / unlocking device, in coordination with multiple transmission components, ensures precise and reliable door locking and unlocking actions, avoiding the risk of accidental door opening during vehicle operation. Regarding durability, the combination of solid lubricating material and a storage port extends the service life of the door.

[0042] In this way, the present application achieves the following beneficial effects:

[0043] (1) The involute track design and the coordinated operation of multiple transmission parts ensure precise and stable door locking and unlocking actions; combined with overload protection mechanism and redundant structure, it can operate reliably even under extreme working conditions; solid lubricating material and storage hole improve the adaptability of components in complex environments and extend service life.

[0044] (2) The integrated handle and shell design optimizes the operating feel, reduces door opening and closing noise, and improves driving comfort. It not only helps the vehicle save energy and reduce consumption, but also reduces the maintenance cost throughout the entire life cycle, taking into account both practicality and economy.

[0045] It should be noted that the technical effects brought about by the second and third aspects can be found in the technical effects brought about by the corresponding implementation methods in the first aspect, and will not be repeated here.

[0046] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0047] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application, and do not constitute an undue limitation of this application.

[0048] Figure 1 A schematic diagram of the structure of a vehicle provided in an embodiment of this application;

[0049] Figure 2 This is a schematic diagram of the structure of an unlocking / locking device provided in an embodiment of this application;

[0050] Figure 3 This is a schematic diagram of another unlocking and locking device provided in an embodiment of this application;

[0051] Figure 4 for Figure 3 The diagram shows the structure of the contact element in the unlocking / locking device.

[0052] Figure 5 for Figure 4 A partially enlarged schematic diagram of the contact element in the locking / unlocking device is shown.

[0053] Figure 6 for Figure 3 The diagram shown is a structural schematic of the first transmission component in the locking / unlocking device.

[0054] Figure 7 for Figure 6 A partially enlarged schematic diagram of the first transmission component in the locking / unlocking device shown.

[0055] Figure 8 This is a partially enlarged schematic diagram of the storage hole provided in an embodiment of this application;

[0056] Figure 9 This is a schematic diagram of the involute track fit provided in an embodiment of this application.

[0057] Figure label:

[0058] 100 - Vehicle; 101 - Door;

[0059] 200-Unlocking / unlocking device; 201-Handle; 2011-Grip part; 2012-Linkage part; 202-Contact element; 203-Actuating element; 2031-Transmission part; 2032-Unlocking part; 204-Cable; 205-Storage hole; 206-Solid lubricant; 207-First transmission element; 207a-Recessed part; 208-Second transmission element;

[0060] L1 - Track curvature centerline; L2 - Track centerline; L3 - First track edgeline; L4 - Second track edgeline. Detailed Implementation

[0061] In the embodiments of this application, the terms "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," "third," "fourth," "fifth," and "sixth" may explicitly or implicitly include one or more of that feature.

[0062] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. "A and / or B" includes three combinations: A only, B only, and a combination of A and B.

[0063] In some embodiments, see Figure 1 This application provides a vehicle 100, which includes a door 101, and the vehicle 100 allows occupants to get on and off the vehicle by opening and closing the door 101.

[0064] This application does not limit the power type or appearance type of vehicle 100. Vehicle 100 can be a pure electric vehicle 100, a hybrid electric vehicle 100, a plug-in hybrid electric vehicle 100, or a range-extended electric vehicle 100, etc. Similarly, vehicle 100 can also be a sedan, a truck, a lorry, or a bus, etc.

[0065] Of course, this application does not limit the position of the door 101. The door 101 can be the door 101 corresponding to the driver's position or the door 101 corresponding to the passenger.

[0066] In some embodiments, see Figure 1 The vehicle 100 also includes an unlocking device 200, which, by way of example, is applied to the door 101, that is, the door 101 includes the unlocking device 200.

[0067] Based on this, the driver and passengers can open or close the door 101 using the unlocking device 200.

[0068] Of course, the locking / unlocking device 200 in this application can also be applied to other locations where unlocking is required, and this application does not limit this application. This application uses the locking / unlocking device 200 to close or open the lock body lock as an example to illustrate the door lock of the vehicle door 101.

[0069] In some embodiments, see Figure 1 and combined Figure 2 or Figure 3 The locking / unlocking device 200 in this application includes a handle 201, a contact member 202, and an actuator 203. The handle 201 includes a grip portion 2011 and a linkage portion 2012 connected together. The contact member 202 is connected to one side surface of the linkage portion 2012. The grip portion 2011 can drive the linkage portion 2012 to drive the contact member 202 to move. The actuator 203 includes a transmission portion 2031 for contacting the contact member 202 and an unlocking portion 2032 for connecting to the lock cylinder of the lock body. When the contact member 202 moves, it can contact the transmission portion 2031 to drive the unlocking portion 2032 to move the lock cylinder.

[0070] The handle 201 refers to the door handle 201 pulled by the driver or passenger when opening the car door 101. The handle 201 can be a hidden handle 201 or a regular handle 201. This application does not limit the type of handle 201. This application uses the door handle 201 of the car door 101 as a hidden handle 201 as an example for illustration.

[0071] Based on this, when the driver or passenger opens the car door 101, by rotating or pulling the handle 2011, the linkage 2012 can be moved together. The linkage 2012 drives the contact member 202 to move. As the contact member 202 moves, it drives the lock cylinder of the lock body to move, thereby separating the lock cylinder from the lock body and realizing the opening of the car door 101.

[0072] In addition, a torsion spring is also provided on the handle 201 to ensure timely rebound.

[0073] For example, the contact 202 is connected to the lock cylinder via a cable 204.

[0074] In this application, the portion of the contact member 202 that contacts the transmission part 2031 is called the contact portion. At least one of the transmission part 2031 and the contact portion includes a solid lubricating material. The solid lubricating material forms at least one of the transmission part 2031 and the contact portion in a portion area for contact with the other.

[0075] Building upon this, this application integrates solid lubricating material directly into the contact or transmission part 2031, thus integrating the lubricating medium with the component surface. This avoids the drawbacks of relying on external lubricants and their susceptibility to wear and tear. The solid lubricating material exists in the form of coatings, inlays, or composite molding, and can always adhere to the friction interface, forming a durable and stable lubricating layer. This prevents the lubricating medium from leaking out and thus avoids the problem of friction not being reduced, further improving the user experience.

[0076] The solid lubricant material is integrated with the contact components, eliminating the need for regular lubricant replenishment or replacement, thus reducing maintenance costs. Furthermore, the lubricant layer wears at a low rate as the contact component 202 and the actuator 203 wear, enabling long-lasting lubrication and extending the service life of the contact component 202 and the actuator 203. This design is suitable for high-frequency applications and avoids frequent maintenance due to lubrication failure.

[0077] Meanwhile, the solid lubricating layer provides uniform and stable frictional resistance, preventing sudden changes in operating resistance caused by uneven lubricant distribution or failure. Users can obtain a more linear and smoother feedback when operating the door handle 101.

[0078] In some embodiments, see Figure 2 or Figure 3 The materials of the transmission part 2031 include plastics, graphite and fibers.

[0079] In other embodiments, the contact material includes plastic, graphite, and fiber.

[0080] Of course, the materials for both the transmission part 2031 and the contact part can include plastic, graphite and fiber.

[0081] Based on this, graphite and fibers can form a slip layer on the surfaces of the transmission part 2031 and the contact part. During the friction process, graphite will continuously release tiny flake particles to the contact surface to form a dynamically replenished lubricating film. Even if the surface is worn, the lubrication effect can be maintained, thereby achieving the effect of self-replenishing lubricant for the transmission part 2031 and the contact part.

[0082] The interface formed between the surfaces of the transmission part 2031 and the contact part is in a continuous friction process. During this process, solid lubricants such as graphite in the composite material can form a continuous transfer film at the friction interface, reducing the coefficient of friction and improving lubrication performance. Meanwhile, the fiber, as a reinforcing fiber, can improve the creep resistance of the surfaces of the transmission part 2031 and the contact part, improve the durability of the relative motion between the transmission part 2031 and the contact part, and thus improve the service life of the unlocking device 200.

[0083] In some embodiments, the graphite is flake graphite.

[0084] Based on this, the unique layered crystal structure of flake graphite makes it easy to slide along the crystal plane during friction, forming a directional lubricating film.

[0085] In some embodiments, graphite comprises a plurality of graphite particles with a particle size greater than or equal to 3 μm and less than or equal to 22 μm.

[0086] For example, the graphite particles have a particle size greater than or equal to 5 μm and less than or equal to 20 μm.

[0087] Based on this, the lubrication performance of the contact element 202 or the actuator 203 can be further enhanced by limiting the particle size of the graphite particles.

[0088] For example, the purity of flake graphite is ≥99%.

[0089] In some embodiments, the fiber includes at least one of carbon fiber and glass fiber.

[0090] Based on this, the graphite microcrystalline layer on the surface of carbon fiber can form a synergistic lubrication with flake graphite, further reducing the coefficient of friction.

[0091] In some embodiments, the mass fraction ratio of plastic, graphite, and fiber in the actuator 203 or contact 202 is 85:10:5.

[0092] Plastic can serve as a substrate to facilitate the processing and molding of the actuator 203 or the contact 202; at the same time, plastic also facilitates the bonding of graphite and fibers.

[0093] Based on this, under this ratio, a balance between material function and process cost is achieved through the lubrication-dominant role of graphite, the structural reinforcement of fibers, the interfacial bonding of plastics, and the structural shaping. This can extend the service life of the actuator 203 and the contact 202 and reduce the maintenance frequency of both.

[0094] In some embodiments, see Figures 2-8 The transmission part 2031 and the contact part have a plurality of spaced storage holes 205 on their surfaces facing each other. The locking and unlocking device 200 also includes a lubricant, which is contained in the storage holes 205.

[0095] Of course, both the transmission part 2031 and the contact part can be provided with a storage hole 205 for accommodating lubricant.

[0096] Based on this, the storage hole 205 can store lubricant in the pores of the contact surface, forming a "long-lasting lubrication source" to continuously replenish lubrication and avoid frequent maintenance. As a "storage chamber" for lubricant, the storage hole 205 releases lubricant slowly from the hole and covers the contact surface due to friction and compression when the contact part and the transmission part 2031 move relative to each other, forming a continuous lubrication effect.

[0097] In some embodiments, see Figure 8 The lubricant is solid lubricant 206.

[0098] Based on this, the solid lubricant 206 exists in the form of powder or granules and will not be lost due to evaporation, leakage, or high-temperature liquefaction. The storage hole 205 can stabilize the solid lubricant 206 on the contact surface, and even under vibration, high load, or repeated friction, it can still slowly release lubricating particles through contact compression to form a continuous "solid lubricating film".

[0099] For example, solid lubricant 206 is a self-lubricating material powder of UHMWPE or molybdenum disulfide.

[0100] As another example, the powder particle size of solid lubricant 206 is about 50 μm.

[0101] In some embodiments, see Figures 2-8 The surface of the transmission part 2031 facing the contact part includes a first surface area for contacting the contact part. The plurality of storage holes 205 include a plurality of first storage holes 205 provided in the first surface area. The portion of the first storage holes 205 in the first surface area is greater than 8% of the total area of ​​the first surface area and less than 22% of the total area of ​​the first surface area.

[0102] Based on this, the insufficient number of storage holes 205 results in a limited total storage capacity of solid lubricant 206 (such as graphite particles), leading to a low concentration of lubricating particles per unit area of ​​the friction surface and making it difficult to form a continuous transfer film. Conversely, excessively dense storage holes 205 result in insufficient matrix material thickness between adjacent holes, causing the solid lubricant 206 to leak out rapidly during extrusion release, thus shortening the lubrication cycle. According to the above technical means, this application limits the area occupied by the first storage hole 205 on the first surface region to ensure that the lubricant within the storage hole 205 can achieve a good and continuous lubrication effect.

[0103] In some embodiments, see Figures 2-8 The surface of the contact portion facing the transmission portion 2031 includes a second surface area for contacting the transmission portion 2031. The plurality of storage holes 205 include a plurality of second storage holes 205 provided in the second surface area. The portion of the second storage holes 205 in the second surface area is greater than or equal to 8% of the total area of ​​the second surface area and less than or equal to 22% of the total area of ​​the second surface area.

[0104] Based on this, this application ensures that the lubricant in the storage hole 205 can achieve a good and continuous lubrication effect by limiting the area occupied by the second storage hole 205 on the second surface region.

[0105] In some embodiments, the diameter of the storage hole 205 is greater than or equal to 40 μm and less than or equal to 220 μm.

[0106] Based on this, this application can ensure the stability of the hole structure during the wear process under reciprocating friction conditions.

[0107] Please see Figure 2 as well as Figure 3 The following provides an exemplary description of two structures of the locking / unlocking device 200.

[0108] In some embodiments, see Figure 2 The contact part and the transmission part 2031 are connected by toothed transmission.

[0109] For example, the first surface area of ​​the transmission part 2031 that contacts the contact part is gear-shaped, and the second surface area of ​​the contact part that contacts the transmission part 2031 is gear-shaped, and the first surface area and the second surface area are driven by gears.

[0110] Based on this, the contact part and the transmission part 2031 can achieve transmission through a compact structure. At the same time, the gear can stably transmit the force of the driver pulling the handle 201 to the unlocking part 2032.

[0111] In some embodiments, see Figure 3 The actuator 203 includes a first transmission member 207 for contacting the contact member 202. The first transmission member 207 has a recess 207a. A portion of the contact member 202 is housed in the recess 207a. The portion of the contact member 202 that contacts the recess 207a forms a contact portion. The portion of the recess 207a that contacts the contact member 202 forms a transmission portion 2031.

[0112] Based on this, the groove wall of the recess 207a constrains the contact member 202, and the bottom plane of the groove restricts axial displacement to prevent the contact member 202 from shifting during transmission.

[0113] In some embodiments, see Figure 3The actuator 203 also includes a second transmission member 208. The second transmission member 208 is provided with an unlocking part 2032. The second transmission member 208 is located on the periphery of the first transmission member 207, and the periphery of the first transmission member 207 can contact the periphery of the second transmission member 208 when moving to drive the second transmission member 208 to move. There are multiple transmission parts 2031, and the multiple transmission parts 2031 include the periphery of the first transmission member 207 and the periphery of the second transmission member 208.

[0114] Based on this, through the transmission between the first transmission component 207 and the second transmission component 208, the second transmission component 208 can transmit the force of the user pulling the handle 201 to the door lock to open the door lock.

[0115] In some embodiments, see Figure 3 The recessed portion 207a and the contact member 202 are partially housed within the recessed portion 207a, so that the portion moves within the recessed portion 207a along an involute track.

[0116] For example, the recess 207a is a through hole.

[0117] Based on this, the recessed portion 207a and the portion of the contact member 202 housed within the recessed portion 207a form an involute mating structure, allowing the contact member 202 to move along an involute track within the recessed portion 207a. Through the unique continuous curvature variation characteristic of the involute, the recessed portion 207a is guided to move along the involute trajectory, dispersing the contact stress during the movement process, reducing stress concentration caused by abrupt changes in the trajectory, and improving the smoothness of component movement and structural durability.

[0118] In some embodiments, see Figure 3 and combined Figure 8 The involute track includes multiple sequentially connected arc tracks with continuously changing curvature. The linkage 2012 drives the contact part to move on the involute track. Along the direction in which the linkage 2012 drives the contact part to drive the actuator 203 to unlock the lock body, the involute curvature radius corresponding to the multiple arc tracks gradually increases.

[0119] The formula for the involute radius of curvature ρ of an arc track is as follows:

[0120] ρ(θ) = α * tanθ,

[0121] Where α is the base circle radius, it can be seen that ρ increases continuously with the expansion angle θ. Along the direction in which the actuator 203 drives the contact 202 to unlock, the radius of curvature of the contact point gradually increases, making the contact stress gradient-distributed rather than abrupt. Utilizing the characteristic of the continuously changing radius of curvature of the involute curve, the contact stress distribution is made more uniform, avoiding intermittent abnormal noises caused by local stress concentration and local wear.

[0122] For example, the radius of the portion of contact 202 housed within recess 207a is 8 mm, and the track travel is 15 mm. According to Hertzian contact theory, the radius of curvature ρ of the track should be slightly larger than the radius R corresponding to the portion of contact 202 housed within recess 207a. Along the direction in which the actuator 203 unlocks contact 202, ρ_outlet > ρ_inlet ≥ R. Therefore, ρ_outlet = (1.5~2.0)R, ρ_inlet = (1.1-1.3)R, and the rate of change of the radius of curvature Δρ / ΔS should be gradual, where ΔS = 15 mm is the track travel.

[0123] Wherein, ρ_outlet refers to the termination position of the partial movement of the contact member 202 housed in the recess 207a, and ρ_inlet refers to the initial position of the partial movement of the contact member 202 housed in the recess 207a.

[0124] The minimum inlet curvature radius ρinlet is determined to be 1.2 * R and rounded to 10 mm. The outlet curvature radius ρoutlet = ρinlet + (Δρ / ΔS) * S. Based on the optimal gradient rate (Δρ / ΔS) = 0.8 mm / mm, ρoutlet is determined to be 22 mm.

[0125] Based on this, the involute curvature radii corresponding to multiple arc tracks gradually increase to achieve gradient release of motion stress through smooth transition of curvature. Along the unlocking direction, the curvature radius of the arc track gradually increases, so that when the contact 202 moves in the recess 207a, the normal pressure angle of the contact point continuously decreases, and the contact stress decreases linearly with the increase of curvature radius, avoiding stress concentration caused by sudden curvature changes.

[0126] For example, please see Figure 9 L1 is the center line of the involute track curvature, L2 is the track center line, L3 is the first track edge line L3 corresponding to the termination position of the partial movement of the contact member 202 housed in the recess 207a, and L4 is the second track edge line L4 corresponding to the initial position of the partial movement of the contact member 202 housed in the recess 207a.

[0127] It should be noted that the centerline mentioned above is only an example of the centerline of the track and is not a limitation on the number and shape of the centerlines involved in this application.

[0128] In some embodiments, the lock body in this application is a car lock for a car door 101. The car door 101 also includes a car door 101 housing, which has an opening. A contact member 202 and an actuator 203 are disposed inside the car door 101 housing. A handle 201 is rotatably connected to the car door 101 housing and is used to cover the opening.

[0129] Based on this, by integrating the contact element 202 and the actuator 203 of the locking / unlocking device 200 into the door 101 housing, and rotatably connecting the handle 201 to the housing and covering the opening, a hidden door 101 handle is formed, creating a compact and highly protective overall structure.

[0130] In some embodiments, this application provides an exemplary description of the manufacturing process of the aforementioned actuator 203 or contact 202. It should be noted that the following description of the manufacturing process of actuator 203 and contact 202 is merely an illustrative example. This content is intended to provide a reference for technical implementation ideas and does not impose any limitations on its actual processing or production methods. Specific implementation still needs to be flexibly adjusted in combination with actual needs, equipment conditions, and material characteristics.

[0131] Based on traditional main materials such as POM and PA6 plastics, solid lubricants such as graphite 206 and reinforcing fibers such as carbon fiber and glass fiber are added. Specifically, 10%-15% flake graphite with a particle size between 5μm and 20μm can be added to the PA6 matrix; at the same time, 5% carbon fiber is added, and the contact part 202 and the actuator part 203 are formed by injection molding.

[0132] For example, the injection molding machine is set to a mold temperature of 80°C, a holding pressure of 80 MPa, and a cooling time of 30 seconds. The above-mentioned mixed material melt is injected into the mold to obtain a complete contact part 202 and an actuator part 203; or a two-color injection molding process is used to injection mold only the above-mentioned mixed material to obtain the contact part 202 and the actuator part 203.

[0133] Secondly, laser etching technology is used to form micropores on the inner wall of the injection mold corresponding to the transmission part 2031 and the contact part. The pore diameter of the micropores is 50μm-200μm, and the surface porosity is 10%-20%. Before injection molding, solid self-lubricating material is pre-placed in the micropores of the mold. Optional materials include UHMWPE (ultra-high molecular weight polyethylene) powder, molybdenum disulfide powder, etc. After molding, the powder is embedded in the surface of the motion coupling mechanism to form a "liquid reservoir". During the operation, the surface structure of the surfaces in contact with the transmission part 2031 and the contact part is subjected to friction and compression. The micropore structure releases lubricating particles to the surfaces in contact with the transmission part 2031 and the contact part to form a dynamic lubricating film, achieving on-demand lubrication and avoiding excessive overflow.

[0134] In the description of the embodiments of this application, specific features, structures, materials or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0135] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A locking / unlocking device, characterized in that, include: The handle (201) includes a grip portion (2011) and a linkage portion (2012) connected to each other; A contact member (202) is connected to one side surface of the linkage part (2012), and the handle part (2011) can drive the linkage part (2012) to drive the contact member (202) to move; The actuator (203) includes a transmission part (2031) for contacting the contact part (202) and an unlocking part (2032) for connecting to the lock cylinder of the lock body. When the contact part (202) moves, it can contact the transmission part (2031) to drive the unlocking part (2032) to move the lock cylinder. The portion of the contact member (202) that contacts the transmission part (2031) is called the contact portion. At least one of the transmission part (2031) and the contact portion includes a solid lubricating material. The solid lubricating material forms at least one of the transmission part (2031) and the contact portion for contact with the other.

2. The unlocking and locking device according to claim 1, characterized in that, The material of the transmission part (2031) includes plastic, graphite and fiber; and / or, the material of the contact part includes plastic, graphite and fiber.

3. The unlocking and locking device according to claim 2, characterized in that, The graphite is flake graphite; and / or, the graphite comprises a plurality of graphite particles, the particle size of which is greater than or equal to 3 μm and less than or equal to 22 μm.

4. The unlocking and locking device according to claim 2, characterized in that, The mass fraction ratio of the plastic, the graphite, and the fiber in the actuator (203) or the contact (202) is 85:10:

5.

5. The unlocking and locking device according to claim 1, characterized in that, The transmission part (2031) and at least one of the contact parts have a plurality of spaced storage holes (205) on their surfaces facing each other; the unlocking device (200) further includes: Lubricant, which is contained in the storage hole (205).

6. The unlocking and locking device according to any one of claims 1-5, characterized in that, The contact portion and the transmission portion (2031) are connected by a toothed transmission.

7. The unlocking and locking device according to any one of claims 1-5, characterized in that, The actuator (203) includes a first transmission member (207) for contacting the contact member (202). The first transmission member (207) has a recess (207a). A portion of the contact member (202) is accommodated in the recess (207a). The portion of the contact member (202) that contacts the recess (207a) forms the contact portion. The portion of the recess (207a) that contacts the contact member (202) forms the transmission portion (2031).

8. The unlocking and locking device according to claim 7, characterized in that, The actuator (203) further includes a second transmission member (208), which is provided with the unlocking part (2032). The second transmission member (208) is located on the periphery of the first transmission member (207), and the periphery of the first transmission member (207) can contact the periphery of the second transmission member (208) when moving to drive the second transmission member (208) to move. There are multiple transmission parts (2031), and the multiple transmission parts (2031) include the peripheral surface of the first transmission member (207) and the peripheral surface of the second transmission member (208).

9. The unlocking and locking device according to claim 8, characterized in that, The recess (207a) engages with the portion of the contact (202) that is housed within the recess (207a) so that the portion moves within the recess (207a) along an involute track.

10. The unlocking and locking device according to claim 9, characterized in that, The involute track includes multiple sequentially connected arc tracks with continuously changing curvature. The linkage part (2012) drives the contact part to move on the involute track. Along the direction in which the linkage part (2012) drives the contact part to drive the actuator (203) to unlock the lock body, the radius of curvature of the involute corresponding to the multiple arc tracks gradually increases.

11. A vehicle door, characterized in that, include: The unlocking and locking device (200) according to any one of claims 1-10, wherein the lock body is a door lock of a vehicle door (101); The door (101) housing has an opening; The contact element (202) and the actuator (203) are disposed inside the door (101) housing. The handle (201) is rotatably connected to the door (101) housing and is used to cover the opening.

12. A vehicle, characterized in that, include: The unlocking and locking device (200) according to any one of claims 1-10; or, The door (101) as described in claim 11.

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