Door lock actuator

Abstract

The invention relates to the technical field of door locks, in particular to a door lock actuator, and aims at solving the problems that an existing actuator is complex in structure, poor in function adaptability and low in universality. The actuator comprises a shell, a driving assembly, an executing assembly and at least one pull wire. An accommodating space is formed in the shell, and a stay wire hole is formed in the shell; the driving assembly is arranged in the accommodating space to provide power; the execution assembly comprises an execution gear and a matching wheel, the execution gear is in transmission connection with the driving assembly, and the matching wheel and the execution gear are coaxially fixed and synchronously rotate; the pull wire is connected with the execution assembly, and the other end drives the door lock structure. A stay wire control part is arranged on one side of the execution gear, and a first channel and a communicated first groove are formed in the circumferential direction of the execution gear; a second channel and a second groove communicated with the second channel are formed in the matching wheel in the circumferential direction. The pull wire penetrates through the channel, and the end of the pull wire is clamped in the groove. The actuator is compact in structure, flexible in function adaptation and capable of being compatible with single / double stay wire driving scenes, and the shell installation buckles are symmetrically arranged and suitable for being shared by a left vehicle door and a right vehicle door.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of door lock, in particular to a door lock actuator. BACKGROUND

[0002] With the development of automobile door lock system towards automation and intelligence, electric function has become one of the core configurations of vehicle door lock. At present, part of the basic electric functions of vehicle door lock (such as locking / unlocking of central lock, electric opening, child safety lock locking) can be directly realized by small driving motor integrated in the lock body. This kind of design relies on the space layout of the lock body itself, and can meet the functional scene of low load and low transmission ratio demand. However, for the self-suction function (need to drive the lock tongue to complete the automatic pre-locking and full-locking of the door) and the ice-breaking function (drive the lock body components to break the ice and snow jam in low temperature environment) in the door lock system, due to the higher performance requirements of driving torque and transmission accuracy, and the structural constraints of small overall size of vehicle door lock and limited transmission ratio of internal transmission mechanism, it is impossible to directly drive by the motor inside the lock body, and it must rely on an independent door lock actuator to transmit power to the core components of the door lock through the pull wire transmission, and then realize the above high performance requirement function.

[0003] The existing actuator for driving the self-suction and ice-breaking functions of the door lock has many technical defects, which is difficult to adapt to the development demand of "miniaturization, low cost and high universality" of automobile parts. On the one hand, if the existing actuator needs to drive two pull wires of self-suction and ice-breaking at the same time, it usually needs to design two independent transmission assemblies (such as double motor drive or single motor with complex gear reversing structure), which leads to complex overall structure of the actuator, large number of parts, not only occupies a large installation space, but also conflicts with the compact layout environment in the door, and significantly increases the processing and assembly cost of parts; on the other hand, the existing actuator has poor function adaptability. For the scene that only needs single pull wire driving (such as the vehicle model that only configures self-suction function without ice-breaking function), it is necessary to redesign the exclusive actuator structure, which cannot realize the compatibility of "single / double pull wire driving scene", leading to the need of vehicle enterprises to reserve multiple sets of actuator schemes to adapt to different configuration models, further increasing the research and development and supply chain cost. In addition, the installation structure of the existing actuator is mostly single-sided special design, and the left and right doors need to develop corresponding upper cover and lower shell molds, which has high mold investment cost and is not conducive to standardized assembly of production line, reducing the production efficiency.

[0004] The deficiencies of the above-mentioned prior art make it difficult to balance the structure compactness, function universality and cost control of the current door lock actuator, which becomes a key problem restricting the development of automobile door lock system towards high cost performance and high integration. Therefore, there is an urgent need for a door lock actuator design scheme that can solve the above-mentioned defects. SUMMARY

[0005] Aiming at one or more of the problems existing in the prior art, a door lock actuator comprises:

[0006] A shell, an accommodation space is formed inside the shell, and at least one pull wire hole for passing a pull wire is formed on the shell;

[0007] A drive assembly arranged in the accommodation space of the shell, for providing power for the door lock actuator;

[0008] An execution assembly arranged in the accommodation space of the shell, in transmission connection with the drive assembly, to receive the power transmitted by the drive assembly; and

[0009] At least one pull wire, one end of which extends into the accommodation space through the pull wire hole and is connected with the execution assembly, for transmitting the power of the execution assembly to the door lock structure to realize the corresponding function;

[0010] Wherein, the execution assembly comprises an execution gear and a matching wheel; the execution gear is arranged in the accommodation space of the shell through a rotating shaft, and is in transmission connection with the drive assembly, so that the execution gear is driven by the drive assembly to rotate around its own axis; the matching wheel is coaxially arranged with the execution gear and is fixedly connected with the execution gear, so as to rotate synchronously with the execution gear;

[0011] Wherein, the connection mode of the pull wire and the execution assembly is selected from at least one of the following:

[0012] The execution gear is integrally formed with a pull wire control part on one side; the circumferential outer side wall of the pull wire control part is formed with an annular first channel extending in the circumferential direction, and the surface of the pull wire control part is formed with a first groove extending in the axial direction and communicating with the first channel; the pull wire passes through the first channel, and the end portion of the pull wire is clamped in the first groove; and / or

[0013] The circumferential outer side wall of the matching wheel is formed with an annular second channel extending in the circumferential direction, and the surface of the matching wheel is formed with a second groove extending in the axial direction and communicating with the second channel; the pull wire passes through the second channel, and the end portion of the pull wire is clamped in the second groove.

[0014] Optionally, the shell comprises a first mounting half-shell and a second mounting half-shell fixedly connected with the first mounting half-shell by fasteners, which together enclose the accommodation space after being combined.

[0015] Optionally, the outer surface of the first mounting half-shell and / or the second mounting half-shell is provided with an assembly part to fix the door lock actuator on its mounting position.

[0016] Optionally, the assembly is a mounting buckle symmetrically arranged along the symmetry axis of the housing; the number of the mounting buckles is at least two, and each is protruded on the outer surface of the first mounting half-shell and the second mounting half-shell, so that the door lock actuator can be adapted to the mounting position of the left door or the right door through the same housing structure, and the left and right doors are shared.

[0017] Optionally, the driving assembly comprises a motor, a worm and a driving gear; the worm is coaxially sleeved and fixed on the output shaft of the motor and rotates synchronously with the output shaft; the driving gear is rotatably arranged in the accommodating space of the housing through a rotating shaft, and the gear teeth of the driving gear are meshed and connected with the worm; a sub-tooth coaxially arranged with the driving gear is integrally formed on one side of the driving gear, and the gear teeth of the execution gear are meshed and connected with the sub-tooth to receive the power of the motor.

[0018] Optionally, at least one clamping block is formed on the circumferential outer side wall of the matching wheel, and a clamping groove with a shape adapted to the clamping block is formed on the corresponding side of the execution gear; the clamping block is clamped in the clamping groove to achieve coaxial fixed connection of the matching wheel and the execution gear, and to ensure synchronous rotation of the two.

[0019] Optionally, a rotating control block is protruded on the circumferential outer side wall of the pull wire control part; a first stop part and a second stop part for abutting against the rotating control block are formed on the inner wall of the first mounting half-shell, and the rotating control block is located between the first stop part and the second stop part; when the execution gear rotates, the rotating control block rotates synchronously with it until it abuts against the first stop part or the second stop part to limit the maximum rotation angle of the execution gear.

[0020] Optionally, a touch switch is fixed on the inner wall of the second mounting half-shell; a third recess recessed towards the axis of the matching wheel is formed on the circumferential outer side wall of the matching wheel, and the groove wall of the third recess and the circumferential outer side wall of the matching wheel have a smooth transition slope; when the matching wheel rotates to the position corresponding to the triggering end of the touch switch in the third recess, the triggering end of the touch switch does not contact the matching wheel, and the touch switch is not triggered; when the matching wheel rotates to the position away from the triggering end of the touch switch in the third recess, the triggering end of the touch switch abuts against the circumferential outer side wall of the matching wheel, thereby triggering the touch switch.

[0021] Optionally, the pull wire comprises a self-suction pull wire, and the pull wire hole comprises a self-suction pull wire hole adapted to the self-suction pull wire; the self-suction pull wire hole is formed by the corresponding edges of the first mounting half-shell and the second mounting half-shell; the self-suction pull wire extends into the accommodating space through the self-suction pull wire hole, and its end is clamped in the first recess after passing through the first channel of the execution gear.

[0022] Optionally, the pull cable includes an ice-breaking pull cable, the pull cable hole includes an ice-breaking pull cable hole adapted to the ice-breaking pull cable; the ice-breaking pull cable hole is directly formed on the second mounting half shell; the ice-breaking pull cable extends into the accommodation space through the ice-breaking pull cable hole, and the end of the ice-breaking pull cable is clamped in the second groove after passing through the second passage of the matching wheel.

[0023] The one or more technical solutions described above have at least the following beneficial effects:

[0024] The technical solution of the door lock actuator provided in the present application first exhibits significant advantages in structural compactness and functional compatibility, effectively solving the problems of complex structure and poor adaptability of traditional actuators when driving multiple functions. The core is to split the execution component into an execution gear and a matching wheel, which are coaxially fixed and synchronously rotated through a clamping structure, without the need to design two independent transmission components for self-suction and ice-breaking functions, significantly reducing the number of parts and simplifying the overall structure, so that the actuator can better adapt to the limited installation space in the vehicle door. At the same time, this split design gives the actuator flexible functional adaptation capability, which can realize single self-suction function through the cooperation of the execution gear and the self-suction pull cable, realize single ice-breaking function through the cooperation of the matching wheel and the ice-breaking pull cable, and also drive two pull cables to meet the dual-function requirement, without the need to redesign a dedicated actuator for different function scenarios. Car companies only need to stock one specification of actuator to adapt to different configuration vehicle models, significantly reducing research and development investment and supply chain management costs.

[0025] Secondly, the technical solution performs outstandingly in the stability and efficiency of power transmission, providing a core guarantee for the reliable realization of door lock functions. The driving component adopts a two-stage transmission structure of "motor-worm-driving gear-secondary gear", the worm is coaxially fixed with the motor output shaft without additional transmission gap, and can accurately transmit motor power to the driving gear; the characteristics of worm transmission not only realize the conversion of high-speed low-torque to low-speed high-torque, meeting the demand for large driving force of self-suction and ice-breaking, but also prevent the driving gear from rotating in the opposite direction after the motor stops, avoiding the failure of the door lock function caused by the back-off of the pull cable due to external force. The integrated design of the driving gear and the secondary gear ensures the coaxiality of the two, reduces the noise and wear during gear meshing, and prolongs the service life of the driving component; the clamping connection of the execution gear and the matching wheel further guarantees the consistency of power transmission, avoiding the action delay or misalignment that may occur in independent driving of multiple components, ensuring that the pull cable can stably receive power and accurately drive the door lock structure.

[0026] Furthermore, the technical solution optimizes the universality and assembly and maintenance convenience, effectively improving the economy in the production and use process. The shell adopts split half-shell splicing design, the first mounting half-shell and the second mounting half-shell are fixed through fasteners, which not only facilitates the installation and debugging of internal components, but also only needs to detach the fasteners to separate the two half-shells during subsequent maintenance, directly overhauls the internal components, without the need to replace the shell as a whole, greatly reducing the maintenance cost. The mounting buckles on the outer surface of the shell are symmetrically arranged along the symmetry axis, so that the same shell can be adapted to the mounting position of the left and right doors without any modification, without the need to develop separate shell molds for left and right doors, reducing the mold investment cost; during production line assembly, the staff does not need to distinguish the "left and right attributes" of the actuator, and can directly install it, reducing assembly errors and improving production efficiency; during after-sales maintenance, there is no need to specially purchase special parts, further reducing the use cost.

[0027] Finally, the technical solution significantly improves the safety and reliability of the door lock actuator through precise limiting and state detection structure. The rotation control block on the execution gear pull wire control part cooperates with the resisting part on the inner wall of the first mounting half-shell, which can accurately limit the maximum rotation angle of the execution gear, avoid damage of the pull wire due to excessive stretching or execution component jamming, and ensure that the pull wire stroke and door lock function requirements are completely matched. The touch switch on the inner wall of the second mounting half-shell cooperates with the third groove of the cooperating wheel, which can detect the rotation state of the cooperating wheel in real time, and when the door lock completes the self-suction or ice breaking action, the touch switch triggers a signal to control the motor to stop, preventing component overload; if the cooperating wheel cannot reach the preset position due to failure, the touch switch is not triggered for a long time, which can prompt the failure, improving the safety of the door lock system. In addition, compared with the control mode relying on electronic components, the design of mechanical limiting and touch detection has stronger anti-interference ability and can still work stably in complex electromagnetic environment or low temperature environment of the vehicle door, ensuring long-term reliable operation of the actuator. BRIEF DESCRIPTION OF DRAWINGS

[0028] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, which together with the embodiments of the present application, are used to explain the present application, and do not constitute a limitation on the present application. In the drawings:

[0029] Figure 1 is a schematic diagram of the overall structure of a door lock actuator provided by an exemplary embodiment of the present application;

[0030] Figure 2 is a schematic diagram of the internal structure of a door lock actuator provided by an exemplary embodiment of the present application;

[0031] Figure 3 is a schematic diagram of the execution assembly of a door lock actuator provided by an exemplary embodiment of the present application from one angle;

[0032] Figure 4is another angle structural schematic view of the execution assembly of the door lock executor provided by an exemplary embodiment of the present application;

[0033] Figure 5 is still another angle structural schematic view of the execution assembly of the door lock executor provided by an exemplary embodiment of the present application;

[0034] Figure 6 is a partial structural schematic view of the execution assembly of the door lock executor provided by an exemplary embodiment of the present application.

[0035] Reference signs:

[0036] 1, housing; 11, pull wire hole; 111, self-suction pull wire hole; 112, ice-breaking pull wire hole; 12, first mounting half shell; 121, first stop; 122, second stop; 13, fastener; 14, second mounting half shell; 141, touch switch; 15, assembly;

[0037] 2, drive assembly; 21, motor; 22, worm; 23, drive gear; 231, secondary tooth;

[0038] 3, execution assembly; 31, execution gear; 311, pull wire control part; 3111, first channel; 3112, first groove; 3112-1, first positioning hole; 3113, rotation control block; 312, clamping groove; 32, matching wheel; 321, second channel; 322, second groove; 3221, second positioning hole; 323, clamping block; 324, third groove;

[0039] 4, pull wire; 41, self-suction pull wire; 42, ice-breaking pull wire. DETAILED DESCRIPTION

[0040] The embodiments of the present application will be described in detail below, examples of which are shown in the accompanying drawings, components of the embodiments of the present application generally described and shown herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application.

[0041] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.

[0042] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0043] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0044] The specific embodiments of the present application will be described below Figures 1 to 6 The technical solutions of the present application are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments.

[0045] The present application provides a door lock actuator, which is designed to realize stable driving of the pull wire through a compact structure, meet the functional requirements of door lock self-suction, ice breaking, etc., and take into account the assembly convenience and cost control.

[0046] Figure 1 is a schematic diagram of the overall structure of the door lock actuator provided by an exemplary embodiment of the present application; Figure 2 is a schematic diagram of the internal structure of the door lock actuator provided by an exemplary embodiment of the present application.

[0047] Referring to Figure 1 and Figure 2 The door lock actuator includes a housing 1, a drive assembly 2, an execution assembly 3 and at least one pull wire 4, and each component cooperates to form a complete power transmission and function execution system. The structure, connection relationship and working principle of each component are described in detail below.

[0048] The housing 1 is the mounting and protection carrier of the entire actuator, and a closed accommodating space is integrally formed in the housing 1. The size and shape of the accommodating space are designed according to the outer contour of the driving assembly 2 and the execution assembly 3, so that the driving assembly 2 and the execution assembly 3 can be accommodated and a gap required for rotation of the components is reserved. Thus, the components can be effectively prevented from interfering with the inner wall of the housing during operation, and external dust, water vapor and other impurities can be prevented from entering the interior of the actuator, so as to ensure long-term stable operation of the internal transmission structure. At least one pull wire hole 11 for passing the pull wire 4 is formed in the side wall of the housing 1. The hole diameter of the pull wire hole 11 is slightly larger than the outer diameter of the pull wire 4, so that the pull wire 4 can smoothly pass through to realize power transmission, and the accurate control of the hole diameter can prevent the pull wire 4 from excessively shaking during movement, thereby improving the stability and precision of the actuator driving.

[0049] The driving assembly 2 is arranged in the accommodating space of the housing 1, and its core function is to provide continuous and stable power for the entire door lock actuator to drive the subsequent execution assembly 3 and the pull wire 4 to act.

[0050] The execution assembly 3 is also arranged in the accommodating space of the housing 1 and is in transmission connection with the driving assembly 2. Its role is to receive the power transmitted by the driving assembly 2 and convert the power into linear motion of the pull wire 4, thereby driving the door lock structure to act.

[0051] Figure 3 FIG. 4 is a structural schematic view of the execution assembly of the door lock actuator from one angle according to an example embodiment of the present application; Figure 4 FIG. 5 is a structural schematic view of the execution assembly of the door lock actuator from another angle according to an example embodiment of the present application; Figure 5 FIG. 6 is a structural schematic view of the execution assembly of the door lock actuator from still another angle according to an example embodiment of the present application.

[0052] Referring to Figures 2 to 5The execution assembly 3 specifically comprises an execution gear 31 and a matching wheel 32. The execution gear 31 is rotatably arranged in the accommodation space through a rotating shaft fixed to the inner wall of the shell 1. The rotating shaft is in clearance fit with the axial hole of the execution gear 31, which can ensure flexible rotation of the execution gear 31 around its own axis and avoid radial deviation of the execution gear 31 during rotation through the positioning effect of the rotating shaft, thereby ensuring transmission accuracy. The toothed part of the execution gear 31 is directly or indirectly engaged with the power output end of the driving assembly 2. When the driving assembly 2 is started, power can be transmitted to the execution gear 31 through the engagement of the teeth, driving the execution gear 31 to rotate around its own axis. The matching wheel 32 is coaxially arranged with the execution gear 31 and is fixedly connected therebetween. This coaxial fixed structure enables the matching wheel 32 to rotate synchronously with the execution gear 31, without the need for an additional independent driving structure. This not only simplifies the overall structure of the execution assembly 3, reduces the number of parts, and reduces assembly difficulty and production cost, but also ensures the consistency of power transmission of the execution assembly 3 through synchronous rotation characteristics, avoiding the action delay or misalignment problem caused by independent driving of multiple components.

[0053] The at least one pull wire 4 serves as a power transmission medium between the actuator and the door lock structure. One end of the pull wire 4 extends into the accommodation space through the pull wire hole 11 on the shell 1 and is stably connected with the execution assembly 3. The other end of the pull wire 4 extends to the corresponding driving part of the door lock structure, for transmitting the power of the execution assembly 3 to the door lock structure, thereby realizing the corresponding functions such as self-suction and ice breaking of the door lock. The connection mode of the pull wire 4 and the execution assembly 3 is selected from at least one of the following modes to adapt to different functional requirements and installation scenes.

[0054] Referring to Figure 3, the first connection mode is that the pull wire 4 is connected with the execution gear 31. On one side of the execution gear 31, a pull wire control part 311 for connecting and controlling the pull wire 4 is integrally formed with the execution gear 31, and the execution gear 31 and the pull wire control part 311 are made by an integral molding process. This structure design can ensure the connection strength between the two, avoid the problem of component separation or damage caused by long-term stress, and at the same time reduce the assembly process and improve the production efficiency. On the circumferential outer side wall of the pull wire control part 311, an annular first channel 3111 extending in the circumferential direction is formed, the groove width of the first channel 3111 is matched with the outer diameter of the pull wire 4, and the first channel 3111 can guide and limit the pull wire 4; at the same time, an axial first groove 3112 extending in the axial direction is formed on the surface of the pull wire control part 311, the first groove 3112 is in communication with the first channel 3111, and the groove depth and the groove width of the first groove 3112 are matched with the connection structure (such as the pull wire end) of the end of the pull wire 4. When this connection mode is adopted, the end of the pull wire 4 first passes through the first channel 3111 and is clamped in the first groove 3112. The first channel 3111 can limit the pull wire 4 so that it cannot displace in the axial direction of the execution gear 31, and the first groove 3112 can fix the position of the end of the pull wire 4 to prevent the pull wire 4 from falling off during the rotation of the execution gear 31, thereby realizing the stable connection of the pull wire 4 and the execution gear 31 and ensuring efficient power transmission.

[0055] Referring to Figure 4 and Figure 5 , the second connection mode is that the pull wire 4 is connected with the matching wheel 32. On the circumferential outer side wall of the matching wheel 32, an annular second channel 321 extending in the circumferential direction is directly formed, and the structure design of the second channel 321 is similar to that of the above-mentioned first channel 3111. The width thereof is accurately designed according to the outer diameter of the pull wire 4 to realize the guidance and limitation of the pull wire 4; on the surface of the matching wheel 32, an axial second groove 322 extending in the axial direction is also formed, the second groove 322 is in communication with the second channel 321, and the size thereof is matched with the connection structure of the end of the pull wire 4. When this connection mode is adopted, the end of the pull wire 4 is clamped in the second groove 322 after passing through the second channel 321, and through the cooperative action of the second channel 321 and the second groove 322, the stable connection of the pull wire 4 and the matching wheel 32 is realized. Since the matching wheel 32 rotates synchronously with the execution gear 31, when the execution gear 31 rotates, the matching wheel 32 can drive the pull wire 4 to move synchronously, thereby realizing the driving of the door lock structure.

[0056] Through the above structural design, the door lock actuator of the present application can realize stable driving of at least one pull wire 4 through the synergistic effect of the execution gear 31 and the matching wheel 32 in the execution assembly 3, which not only meets the power demand of single function of the door lock (such as only self-suction or only ice breaking), but also reserves a structural basis for subsequent expansion of double-pull wire driving function; at the same time, the overall structure is compact and the number of parts is small, which not only reduces the production and assembly cost, but also can well adapt to the limited installation space in the car door, and has significant practicality and economic advantage.

[0057] Figure 6 is a partial structure diagram of the execution assembly of the door lock actuator provided by an exemplary embodiment of the present application.

[0058] In some embodiments, referring to Figure 1 , Figure 2 and Figure 6 , the shell 1 is used as the core structure of the bearing internal drive assembly, execution assembly and pull wire, and adopts a split half-shell splicing design to meet the assembly and protection requirements: it specifically includes a first mounting half-shell 12 and a second mounting half-shell 14, which are fixedly connected through fasteners 13, and after splicing, they jointly form an enclosed containing space for accommodating internal components. Compared with the traditional integrated shell, this structure can reduce the operation restrictions at the production, assembly and maintenance stages, and at the same time, through the sealing design of the splicing surface (such as the cooperation of the sealing protrusion and the sealing groove), it can effectively block the intrusion of external dust and water vapor, avoid the wear or jamming of internal transmission components, and ensure the long-term stable operation of the actuator. In some specific examples, the fastener 13 can be selected as a cross-slotted pan head screw, which is convenient to assemble and disassemble and has strong universality, the number thereof can be set to 2-10 according to the size and stress requirement of the shell 1, and it is uniformly distributed along the splicing edge (such as one at each corner of the shell 1), so as to ensure the dispersion of connection stress and avoid the deformation of the shell extruding the internal components, thereby maintaining the stability of the containing space size.

[0059] The door lock actuator provided in the present application splits the execution assembly 3 into two independent components, the execution gear 31 and the matching wheel 32, instead of using the traditional integrated structure. This design fundamentally optimizes the assembly process between the pull wire and the execution assembly, and between the execution assembly and the shell, significantly reducing the complexity of the installation operation. Specifically, the assembly can follow the logic of "step-by-step assembly and layer-by-layer positioning". First, focus on the assembly of the matching wheel 32 and the second installation half-shell 14. The worker can first pass the end of the pull wire (such as the ice-breaking pull wire) through the second channel 321 of the matching wheel 32 according to the predetermined path, and then clamp it into the second groove 322, completing the pre-assembly of the pull wire and the matching wheel 32. Since the matching wheel 32 is an independent component at this time, there is no obstruction of the execution gear 31, the view is clearer, and the space for hand or tool movement is more sufficient, which can easily ensure the precise fit of the pull wire end and the second groove 322, avoiding the misplacement or insecure clamping of the pull wire due to the space limitation of the integrated structure. After completing the assembly of the pull wire and the matching wheel 32, the matching wheel 32 is stably installed at the corresponding position of the second installation half-shell 14 through the predetermined positioning structure (such as the shaft or positioning boss on the shell), realizing the preliminary fixation of the matching wheel 32.

[0060] Subsequently, the execution gear 31 is assembled: the worker can separately connect another pull wire (such as the self-suction pull wire) with the pull wire control part 311 of the execution gear 31 - that is, the pull wire is passed through the first channel 3111 and clamped into the first groove 3112. Again, because the execution gear 31 exists independently, the operation space and view are not disturbed, and the precise assembly of the pull wire and the execution gear 31 can be quickly completed. After the pull wire and the execution gear 31 are assembled, the execution gear 31 is installed on the matching wheel 32 which is already fixed on the second installation half-shell 14 in a "covering" manner. At this time, only the fitting and clamping of the clamping groove 312 of the execution gear 31 and the clamping block 323 of the matching wheel 32 are needed to complete the adaptation and clamping, which can realize the coaxial fixation and synchronous rotation function of the two.

[0061] In contrast to the traditional integrated execution assembly 3, the integrated structure needs to consider the threading of the two pull wires and the positioning of the shell at the same time. Because the pull wire connection positions are blocked and the operation space is compressed by the overall structure, the worker often needs to repeatedly adjust the pull wire position and the component angle to complete the installation, which not only takes a long time, but also easily causes pull wire wear or component installation deviation due to improper operation. The design of splitting the execution assembly 3 into two parts in the present application allows each assembly operation to be performed under the condition of "no obstruction and large space", making the assembly of the pull wire and the single component more precise, and the positioning of the component and the shell more stable, ultimately improving the assembly efficiency and ensuring the assembly quality, while reducing the dependence on the operation proficiency of the assembly personnel, and better meeting the needs of large-scale production.

[0062] In some embodiments, referring to Figure 1The outer surface of the housing 1 of the door lock actuator of the present application is provided with mounting buckles as an assembly 15 for fixing the actuator to the door mounting position. The mounting buckles are symmetrically arranged along the symmetry axis of the housing 1, at least two in number, and are respectively protruded on the outer surface of the first mounting half-shell 12 and the second mounting half-shell 14. For example, the outer surface of the first mounting half-shell 12 and the second mounting half-shell 14 can respectively correspond to a plurality of mounting buckles, and the two groups of buckles are mirror-distributed with the symmetry axis of the housing 1 as the center.

[0063] The symmetrically arranged mounting buckle structure can adapt to the mounting positions of left and right doors without any structural modification of the same housing 1. During installation, the placement direction of the actuator only needs to be adjusted according to the type of the door, so that the buckles can be accurately aligned with the corresponding door mounting holes, and separate development of the housing mold for left and right doors is not required. At the same time, the vehicle manufacturer only needs to reserve one specification of the actuator, without distinguishing between "left door only" or "right door only", which simplifies the supply chain management and warehouse process. During production line assembly or after-sales maintenance, the staff does not need to spend time identifying the type of the door to which the actuator is adapted, and can directly perform installation operations, which reduces assembly errors and improves operation efficiency. As long as the spacing of the door mounting holes of other vehicle models matches the spacing of the buckles, the actuator can be used across vehicle models, effectively expanding the application range.

[0064] In some embodiments, referring to Figure 2 The drive assembly 2 of the door lock actuator of the present application includes a motor 21, a worm 22, and a drive gear 23, which constitute a two-stage transmission structure. The motor 21 can be a miniature DC speed reduction motor, which is fixed to a motor mounting position in the accommodation space of the housing 1, and the output shaft thereof extends in the horizontal direction. The worm 22 is coaxially sleeved and fixed to the output shaft of the motor 21, and does not rotate relative to the output shaft. The fixing method can be interference fit or key connection. The teeth of the worm 22 are uniformly distributed in the circumferential direction, and the tooth shape is adapted to the gear teeth of the drive gear 23. The drive gear 23 is rotatably arranged in the accommodation space through a separate shaft, and the shaft is respectively embedded in the bearing seat pre-provided in the inner wall of the first mounting half-shell 12 and the second mounting half-shell 14. The bearing seat is a circular groove structure, which can limit the radial deviation and axial movement of the shaft. The upper surface of the drive gear 23 is integrally formed with a coaxially arranged secondary gear 231. The secondary gear 231 and the drive gear 23 are made of the same material, the number of teeth is less than that of the drive gear 23, and the secondary gear 231 is engaged with the gear teeth of the drive gear 31.

[0065] The driving assembly 2 can transmit motor power to the execution assembly 3 through the transmission path of "motor 21-worm 22-driving gear 23-secondary tooth 231". The engagement of the worm 22 and the driving gear 23 constitutes a first-stage reduction, converting the high-speed low-torque power of the motor 21 into low-speed high-torque power to meet the driving force required for door lock self-suction and ice breaking. The self-locking nature of the worm transmission can prevent the driving gear 23 from rotating in the opposite direction after the motor stops, avoiding the retraction of the pull wire. The engagement of the secondary tooth 231 and the execution gear 31 realizes the secondary transmission and steering of power, and adjusts the transmission ratio through the difference in the number of teeth to adapt to the rotation requirements of the execution assembly 3. The coaxiality of the integrally formed secondary tooth 231 and the driving gear 23 reduces the noise and wear of engagement. The design without additional shaft couplings simplifies the structure, eliminates transmission gaps, improves the accuracy of power transmission, avoids power delay, and provides reliable power support for stable driving of the pull wire.

[0066] In some embodiments, referring to Figure 4 At least one clamping block 323 is formed on the circumferential outer wall of the matching wheel 32. The clamping block 323 can be a rectangular, trapezoidal, triangular or other irregular shaped protrusion. The side of the execution gear 31 facing the matching wheel 32 is provided with a clamping groove 312 that completely matches the shape of the clamping block 323. The clamping block 323 can be directly clamped in the clamping groove 312. When the number of clamping blocks 323 is multiple, they are evenly distributed along the circumferential outer wall of the matching wheel 32, and the corresponding clamping grooves 312 are also evenly arranged along the corresponding side of the execution gear 31 in the circumferential direction. The clamping block 323, the matching wheel 32, the clamping groove 312 and the execution gear 31 are integrally formed, and the material is consistent with the execution gear 31 and the matching wheel 32, ensuring the structural integrity.

[0067] The clamping structure can directly limit the relative rotation of the matching wheel 32 and the execution gear 31 in the circumferential direction, avoiding component slip due to excessive torque during power transmission. The evenly distributed clamping blocks and clamping grooves can balance the force between the two, reduce structural damage caused by local stress concentration, improve coaxiality accuracy, and thus reduce the radial runout of the matching wheel 32 during rotation, ensuring the stability of subsequent cooperation with the pull wire 4. During assembly, no additional connecting parts are needed, and the fixing can be completed by applying slight pressure in the axial direction, reducing the number of parts and assembly cost. During subsequent maintenance, the two can be separated by applying a reverse force in the axial direction without damaging the overall structure, reducing the difficulty of maintenance. The clamping block and the clamping groove can be molded at one time through an injection mold, facilitating control of machining precision and ensuring interchangeability of parts during mass production.

[0068] In some embodiments, the present application provides a door lock actuator, the rotation angle of the execution gear 31 in the door lock actuator directly determines the pulling stroke of the pull wire 4, and accurate control of the pull wire stroke is the key to ensuring that the door lock functions such as self-suction and ice breaking can be reliably implemented - if the stroke is too short, it may cause self-suction to be not in place or ice breaking to be not complete; if the stroke is too long, it may cause the pull wire to be damaged by excessive stretching or the execution assembly to be stuck. Therefore, by providing a rotation limiting structure between the pull wire control part 311 and the first mounting half shell 12, the maximum rotation angle of the execution gear 31 can be effectively limited, and the accuracy and safety of the function operation can be ensured. Specifically, referring to Figure 3 and Figure 6 , the execution gear 31 of the door lock actuator of the present application is provided with a pull wire control part 311 on one side, a rotation control block 3113 is protrudingly provided on the circumferential outer side wall of the pull wire control part 311, the rotation control block 3113 is made of an integral molding process, the end part is designed as a circular arc transition structure, the protruding height and width need to be adapted to the limiting requirement, and the pull wire 4 can pass through the first passage 3111 of the execution gear 31 without affecting the pull wire 4. The first resisting part 121 and the second resisting part 122 are formed correspondingly on the inner wall of the first mounting half shell 12, and are integrally injection molded with the first mounting half shell 12, are oppositely arranged and are respectively located on both sides of the rotation control block 3113, the rotation control block 3113 is initially located between the first resisting part 121 and the second resisting part 122, and the three together constitute a bidirectional limiting structure; the positions of the first resisting part 121 and the second resisting part 122 on the inner wall of the first mounting half shell 12 need to make the central angle between the two correspond to the required angle of the execution gear 31 driving the pull wire 4 to complete the self-suction or ice breaking action.

[0069] The limiting structure can directly limit the maximum rotation angle of the execution gear 31 by the abutment of the rotation control block 3113, the first resisting part 121 and the second resisting part 122, so as to avoid excessive rotation of the execution gear 31 causing overload damage of the pull wire 4 or sticking of the execution assembly 3, and ensure that the pull wire 4 stroke is accurately matched with the function requirement of the door lock. The circular arc transition structure of the rotation control block 3113 can disperse the contact stress when abutting, reduce the wear and impact noise of the parts; the integral molding structure design ensures the structural integrity and long-term stability of the limiting part, which can realize reliable limiting without relying on an electronic control system, and improve the adaptability of the actuator in extreme working conditions. At the same time, the mold processing can ensure the dimensional accuracy of the rotation control block 3113, the first resisting part 121 and the second resisting part 122, so that the pull wire stroke of the batch-produced actuator remains consistent, and the mechanical limiting structure has no element aging and signal failure problem, and the maintenance cost is lower.

[0070] In some embodiments, referring to Figure 4The second mounting half shell 14 of the door lock actuator provided in the application is internally fixed with a touch switch 141, which is a state detection core element. The fixing mode can be selected from buckle connection or screw fixing, and the touch switch 141 is mounted on a pre-set boss on the inner wall of the second mounting half shell 14. The boss is a protruding structure, which can position the touch switch 141, ensure that the trigger end (usually an elastic contact) of the touch switch 141 is kept in a suitable gap with the circumferential outer side wall of the matching wheel 32, and the boss can also protect the touch switch 141 from accidental collision with internal transmission components. A third groove 324 recessed towards the axis of the matching wheel 32 is formed on the circumferential outer side wall of the matching wheel 32, and the groove wall of the third groove 324 and the circumferential outer side wall of the matching wheel 32 are designed with a smooth transition slope. The depth of the recess is suitable for the extension stroke of the trigger end of the touch switch 141. When the third groove 324 rotates to the position corresponding to the trigger end, the trigger end is not in contact with the matching wheel 32; when the third groove 324 is away from the position corresponding to the trigger end, the circumferential outer side wall of the matching wheel 32 can abut against the trigger end.

[0071] The structure can accurately detect the rotation state of the matching wheel 32 through the cooperation of the touch switch 141 and the third groove 324, and then feedback the action position of the execution assembly: the non-trigger state corresponds to the initial position of the execution assembly, and the trigger state corresponds to the working position of the execution assembly, which provides a reliable signal for the control system to judge the function state of the door lock. The smooth transition slope design can avoid instantaneous rigid contact between the trigger end and the matching wheel 32, reduce damage to the trigger end and impact noise, and ensure smooth switching of the switch state; the mechanical touch detection method has strong anti-interference ability and can work stably in a complex electromagnetic environment or a low temperature environment of the vehicle door, avoiding the problem that electronic components are easily disturbed. At the same time, after the door lock function is completed, the touch switch 141 trigger signal can control the motor to stop rotating to prevent component overload damage; if the matching wheel 32 does not reach the pre-set position, the switch is not triggered for a long time, which can prompt a fault and improve the safety of the door lock system.

[0072] In some embodiments, referring to Figure 1 and Figure 3 , the pull wire 4 includes a self-suction pull wire 41 specially adapted to the self-suction function of the door lock. Correspondingly, a self-suction pull wire hole 111 adapted to the outer diameter and shape of the self-suction pull wire 41 is formed in the pull wire hole 11 of the shell 1, and the self-suction pull wire hole 111 is not independently formed by a single mounting half shell, but is formed by the corresponding edges of the first mounting half shell 12 and the second mounting half shell 14. The assembly of the self-suction pull wire 41 needs to strictly match the above structure, that is, the self-suction pull wire 41 extends into the accommodation space of the shell 1 through the self-suction pull wire hole 111, passes through the pre-set first channel 3111 of the execution gear 31, and is clamped in the first groove 3112 of the execution gear 31, forming a complete "shell passing- channel guiding-groove fixing" connection system.

[0073] The self-suction pull wire hole 111 is formed by the first mounting half shell 12 and the second mounting half shell 14, and corresponding edges of the two half shells are respectively processed with a half-hole structure, for example, a semicircular notch is opened on the side wall edge of the first mounting half shell 12 along the height direction, the diameter of the notch is consistent with or slightly larger than the outer diameter of the self-suction pull wire 41, so as to ensure that the self-suction pull wire 41 can pass through smoothly and not produce excessive shaking; correspondingly, a semicircular notch with the same size and shape is also processed on the side wall edge of the second mounting half shell 14 which is combined with the first mounting half shell 12, when the first mounting half shell 12 and the second mounting half shell 14 are combined and fixed by the fastener 13, the two semicircular notches are aligned and form a complete circular self-suction pull wire hole 111.

[0074] In some specific examples, the edges of the semicircular notches of the two half shells can also be respectively provided with a protruding rib extending along the circumference of the hole wall, when the two half shells are combined, the protruding ribs are in close contact with each other, which can not only enhance the structural strength of the self-suction pull wire hole 111, avoid deformation of the hole wall due to pull wire friction in long-term use, but also further limit the radial shaking of the pull wire through the slight contact between the rib and the outer wall of the self-suction pull wire 41, and improve the motion stability thereof.

[0075] In addition, the opening position of the self-suction pull wire hole 111 on the shell 1 needs to be accurately corresponding to the first channel 3111 of the execution gear 31, which is usually located in the area of the side wall of the shell 1 close to the execution gear 31, and the center axis of the self-suction pull wire hole 111 is consistent with the tangent direction of the first channel 3111, so as to ensure that the self-suction pull wire 41 can enter the first channel 3111 along a straight line after passing through the hole, avoid additional friction between the pull wire and the channel edge due to angle deviation, and reduce the wear of the pull wire.

[0076] The structure of the self-suction pull wire 41 itself also needs to be adapted to the assembly path, which is usually composed of an internal steel wire core and an external wear-resistant sleeve, wherein the end portion extending into the accommodation space and connected with the execution gear 31 needs to be specially treated, in some specific examples, the end portion of the self-suction pull wire 41 is crimped with a cylindrical or square metal end, the material of the end can be selected from brass or galvanized steel, which has high rigidity and wear resistance, and the outer diameter of the end needs to be accurately matched with the width of the first groove 3112 of the execution gear 31, usually with a transition fit, so as to ensure that the end can be smoothly clamped into the groove, and avoid loosening after clamping.

[0077] The relative positions of the first channel 3111 and the first groove 3112 on the execution gear 31 also need to be accurately designed, the first channel 3111 surrounds the outer side wall of the pull wire control portion 311 of the execution gear 31, and the first groove 3112 extends axially along the surface of the pull wire control portion 311, and one end of the first groove 3112 communicates with the first channel 3111, forming a communication channel of “channel-groove”.

[0078] The first channel 3111 is an annular structure formed in the circumferential outer wall of the pull string control part 311. Its core function also includes ensuring that the pull string corresponding to the non-target function remains stationary to avoid interfering with the target function when the actuator implements a single function (self-suction or ice breaking). When the door lock triggers the ice breaking function, the driving assembly 2 drives the execution gear 31 to rotate counterclockwise, at which time the matching wheel 32 engaged with the execution gear 31 synchronously rotates counterclockwise to pull the ice breaking pull string 42 to realize the ice breaking action. However, the end of the self-suction pull string 41 is clamped in the first groove 3112 of the execution gear 31, but the core of the self-suction pull string 41 is located in the first channel 3111. Since the first channel 3111 extends along the circumference of the pull string control part 311, when the execution gear 31 rotates counterclockwise, the core of the self-suction pull string 41 can slide freely along the first channel 3111, and it will not be pulled by the rotation of the execution gear 31, nor will it be squeezed due to rotation, so that the self-suction pull string 41 always remains stationary, ensuring that the ice breaking function is independent and stable, and is not interfered by the self-suction pull string 41.

[0079] The top of the first groove 3112 is provided with a small first positioning hole 3112-1, and the diameter of the first positioning hole 3112-1 is consistent with or slightly larger than the diameter of the steel wire core inside the self-suction pull string 41. When the end of the self-suction pull string 41 is clamped into the first groove 3112, the steel wire core can pass through the first positioning hole 3112-1 into the first channel 3111.

[0080] In addition, the groove wall of the first groove 3112 needs to be smooth without burrs or protrusions to avoid scratching the end of the self-suction pull string 41 when it rotates with the execution gear 31, which may cause wear or jamming.

[0081] In some embodiments, referring to Figure 1 and Figure 5 , the pull string 4 includes an ice breaking pull string 42 dedicated to the ice breaking function of the door lock. Correspondingly, the pull string hole 11 on the shell 1 includes an ice breaking pull string hole 112 that is adapted to the structure of the ice breaking pull string 42, and the ice breaking pull string hole 112 is not formed by the combination of two halves, but is directly formed on the second mounting half shell 14. The assembly of the ice breaking pull string 42 needs to follow a predetermined path, that is, first extend into the accommodation space of the shell 1 from the outside of the shell 1 through the ice breaking pull string hole 112, then pass through the second channel 321 machined on the matching wheel 32, and finally clamp the end thereof in the second groove 322 of the matching wheel 32 to form a connection structure of "single half shell hole positioning-channel guiding-groove fixing".

[0082] The ice breaking pull line hole 112 is directly formed in the second mounting half shell 14. The hole is generally circular in shape, and the hole diameter is accurately matched with the outer diameter of the ice breaking pull line 42. Generally, the hole diameter is the same as or slightly larger than the outer diameter of the ice breaking pull line 42. The size difference can ensure smooth sliding of the ice breaking pull line 42 in the hole, avoid movement obstruction of the pull line due to too small hole diameter, and reduce the radial shaking of the pull line during movement through the hole diameter limitation, thereby ensuring the accuracy of the ice breaking action.

[0083] In some specific examples, the hole edge of the ice breaking pull line hole 112 is also chamfered. This processing can avoid the sharp edge of the hole to cause abrasion to the outer wall of the ice breaking pull line 42, especially when the ice breaking action needs to frequently pull the pull line back and forth, which can effectively prolong the service life of the pull line. Meanwhile, a protruding annular rib can be arranged on the inner side of the hole along the hole wall in a circumferential direction. The inner wall of the rib is in contact with the outer wall of the ice breaking pull line 42, which further enhances the guiding effect of the pull line and prevents the pull line from deviating in the hole.

[0084] The ice breaking pull line hole 112 is formed on the second mounting half shell 14 in a position strictly corresponding to the second channel 321 of the matching wheel 32. Generally, the hole is located on the side wall of the second mounting half shell 14 near the matching wheel 32, and the center axis of the hole is consistent with the tangent direction of the second channel 321, so that the ice breaking pull line 42 can enter the second channel 321 along a straight line after passing through the hole, thereby avoiding additional friction between the pull line and the channel edge due to angle deviation, which affects the transmission efficiency.

[0085] The structure of the ice breaking pull line 42 itself also needs to be adapted to the assembly path. The ice breaking pull line 42 is generally composed of an internal steel wire core and an external wear-resistant sleeve. The end portion of the ice breaking pull line 42 that extends into the accommodating space and is connected to the matching wheel 32 needs to be specially treated. In some specific examples, a cylindrical or square metal end head is crimped on the end portion of the ice breaking pull line 42. The material of the end head can be selected from brass or galvanized steel, which has high rigidity and wear resistance. The outer diameter of the end head needs to be accurately matched with the width of the second groove 321 of the matching wheel 32, and generally uses a transition fit, so that the end head can be smoothly clamped into the groove and avoid loosening after being clamped.

[0086] The second channel 321 is an annular groove formed on the circumferential outer wall of the matching wheel 32. The groove width is consistent with the outer diameter of the ice breaking pull line 42, so that the pull line can be completely embedded in the groove and guided by the groove wall. The second groove 322 is formed on the surface of the matching wheel 32 and extends along the axial direction of the matching wheel 32. The depth of the second groove 322 is adapted to the height of the end head of the end portion of the ice breaking pull line 42, and the width of the groove corresponds to the width of the end head. The second channel 321 and the second groove 322 need to be connected to each other, so that when the end head of the ice breaking pull line is clamped in the second groove 322, the ice breaking pull line 42 can be located in the second channel 321.

[0087] The core role of the second channel 321 also includes providing sliding space for the pull wire corresponding to the non-target function to avoid the non-target pull wire being pulled or squeezed by mistake when the actuator implements a single function (self-suction or ice breaking). When the door lock triggers the self-suction function, the driving assembly 2 drives the execution gear 31 to rotate clockwise, and the matching wheel 32 engaged with the execution gear 31 rotates clockwise synchronously. At this time, the execution gear 31 pulls the self-suction pull wire 41 through the first groove 3112 to complete the self-suction action. The end of the ice breaking pull wire 42 is clamped in the second groove 322 of the matching wheel 32, but the wire core of the ice breaking pull wire 42 is located in the second channel 321. With the structure of the second channel 321 extending along the circumference of the matching wheel 32, when the matching wheel 32 rotates clockwise, the wire core of the ice breaking pull wire 42 can smoothly slide along the second channel 321, and it will not be driven by the rotation of the matching wheel 32, nor will it be squeezed and deformed due to the rotation of the matching wheel 32, ensuring that the ice breaking pull wire 42 remains stationary and does not interfere with the precise execution of the self-suction function.

[0088] The second groove 322 has a second positioning hole 3221 at the bottom, and the diameter of the second positioning hole 3221 is consistent with the diameter of the steel wire core inside the ice breaking pull wire 42. When the end of the ice breaking pull wire is clamped into the groove, the steel wire core can pass through the second positioning hole 3221 into the second channel 321.

[0089] The working process of the door lock actuator provided in the application is as follows:

[0090] When the door lock system triggers the self-suction function, the vehicle control system sends a start signal to the drive assembly 2, the motor 21 starts to drive the coaxially fixed worm 22 to rotate synchronously, the worm 22 drives the drive gear 23 rotating around the independent rotating shaft through the gear meshing, the auxiliary gear 231 on one side of the drive gear 23 rotates synchronously, and drives the execution gear 31 to rotate clockwise around the preset rotating shaft in the inner wall of the shell 1 through the gear meshing. Since the cooperation wheel 32 is fixedly engaged with the corresponding side of the engagement groove 312 of the execution gear 31 through the engagement block 323 on the circumferential outer wall, the cooperation wheel 32 will rotate synchronously with the execution gear 31. At this time, the pull line control part 311 integrated on one side of the execution gear 31 rotates synchronously, and the first channel 3111 on the circumferential outer wall of the pull line control part 311 and the first recess 3112 in communication cooperate to clamp the end of the self-suction pull line 41 in the first recess 3112, and the self-suction pull line 41 is synchronously pulled by the clockwise rotation of the pull line control part 311, the other end of the self-suction pull line 41 extends out of the shell 1 through the self-suction pull line hole 111 enclosed by the first mounting half shell 12 and the second mounting half shell 14, and then pulls the locking tongue of the door lock structure to complete the self-suction action. Although the circumferential outer wall of the cooperation wheel 32 rotates synchronously, the end of the ice-breaking pull line 42 is clamped in the second recess 322 of the cooperation wheel 32, and the wire core is located in the annular second channel 321 of the cooperation wheel 32. The structure design of the second channel 321 extending along the circumferential direction of the cooperation wheel 32 makes the wire core of the ice-breaking pull line 42 freely slide along the second channel 321 when the cooperation wheel 32 rotates clockwise, so that the ice-breaking pull line 42 cannot be pulled by the cooperation wheel 32, nor be extruded due to the rotation of the cooperation wheel 32, ensuring that the ice-breaking pull line 42 remains in a static state and avoids interfering with the non-target function of the door lock.

[0091] When the door lock system triggers the ice breaking function, the vehicle control system sends a reverse starting signal to the drive assembly 2, the motor 21 reverses and drives the worm 22 to rotate synchronously in reverse, the worm 22 reverses through the meshing drive drive gear 23, the sub-tooth 231 of the drive gear 23 reverses to drive the execution gear 31 to rotate counterclockwise around the rotating shaft, and the matching wheel 32 is also counterclockwise due to the engagement structure of the execution gear 31. The second groove 322 of the matching wheel 32 is counterclockwise with the matching wheel 32, and the end of the ice breaking pull line 42 is pulled out of the shell 1 through the ice breaking pull line hole 112 on the second installation half shell 14. Pull the ice breaking component in the door lock to break the ice and snow jam; while the pull line control part 311 of the execution gear 31 is counterclockwise, but the core of the self-suction pull line 41 is located in the first channel 3111, and the structure of the first channel 3111 extending along the circumference of the pull line control part 311 allows the core of the self-suction pull line 41 to slide along the channel with the counterclockwise rotation of the pull line control part 311. The end of the self-suction pull line 41 is clamped in the first groove 3112 and cannot be pulled, ensuring that the self-suction pull line 41 remains stationary and avoiding affecting the stability of the door lock self-suction function. During the whole process, the rotation control block 3113 on the pull line control part 311 of the execution gear 31 will rotate with the execution gear 31, until it abuts against the first stop part 121 or the second stop part 122 on the inner wall of the first installation half shell 12 to limit the maximum rotation angle, and the touch switch 141 on the inner wall of the second installation half shell 14 will detect the rotation state through the third groove 324 of the matching wheel 32, and the motor 21 will stop rotating when the function is completed. Ensure accurate action and component safety.

[0092] It should be noted that the technical solutions in each embodiment of the present application can be combined with each other, but the basis for mutual combination is that it can be realized by ordinary skilled in the art; when the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, that is, it is not within the protection scope of the present application.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A door lock actuator, characterized in that, include: The housing has an internal receiving space, and the housing has at least one pull hole for threading a pull wire. A drive assembly, disposed within the housing's accommodating space, is used to provide power to the door lock actuator; An actuation component is disposed within the housing's accommodating space and is connected in a transmission manner to the drive component to receive power transmitted by the drive component; and At least one pull cord, one end of which extends into the receiving space through the pull cord hole and is connected to the actuating component, for transmitting the power of the actuating component to the door lock structure to achieve the corresponding function; The actuation component includes an actuation gear and a mating wheel; the actuation gear is rotatably disposed within the housing space via a rotating shaft and is connected to the drive component for transmission, and is driven by the drive component to rotate around its own axis; the mating wheel is coaxially disposed and fixedly connected to the actuation gear so as to rotate synchronously with the actuation gear; The connection method between the pull wire and the execution component is selected from at least one of the following: A cable control section is integrally formed on one side of the actuating gear; the circumferential outer wall of the cable control section forms an annular first channel extending circumferentially, and the surface of the cable control section forms a first groove extending axially and communicating with the first channel; the cable passes through the first channel, and its end is engaged in the first groove; and / or The outer circumferential wall of the mating wheel has an annular second channel extending circumferentially, and the surface of the mating wheel has a second groove extending axially and communicating with the second channel; the pull wire passes through the second channel, and its end is engaged in the second groove.

2. The door lock actuator according to claim 1, characterized in that, The housing includes a first mounting half-shell and a second mounting half-shell that is fixedly connected to the first mounting half-shell by fasteners. When the two are assembled, they together enclose the receiving space.

3. The door lock actuator according to claim 2, characterized in that, The outer surface of the first mounting half-shell and / or the second mounting half-shell is provided with an assembly to secure the door lock actuator in its mounting position.

4. The door lock actuator according to claim 3, characterized in that, The assembly consists of mounting clips symmetrically arranged along the axis of symmetry of the housing; there are at least two mounting clips, which protrude from the outer surfaces of the first and second mounting half-shells respectively, so that the door lock actuator can be adapted to the mounting position of the left or right door through the same housing structure, and can be used for both left and right doors.

5. The door lock actuator according to claim 1, characterized in that, The drive assembly includes a motor, a worm gear, and a drive gear; the worm gear is coaxially sleeved and fixed on the output shaft of the motor and rotates synchronously with the output shaft; the drive gear is rotatably disposed within the receiving space of the housing via a rotating shaft, and its teeth are meshed with the worm gear; a secondary tooth is integrally formed on one side of the drive gear and is coaxially disposed therewith, and the teeth of the actuating gear are meshed with the secondary tooth to receive power from the motor.

6. The door lock actuator according to claim 1, characterized in that, At least one engaging block is formed on the circumferential outer wall of the mating wheel, and an engaging groove adapted to the shape of the engaging block is formed on the corresponding side of the actuating gear; the engaging block is engaged in the engaging groove to achieve a coaxial fixed connection between the mating wheel and the actuating gear, ensuring that the two rotate synchronously.

7. The door lock actuator according to claim 2, characterized in that, A rotation control block is protruding on the circumferential outer wall of the pull wire control part; a first abutment and a second abutment are formed on the inner wall of the first mounting half shell for abutting against the rotation control block, and the rotation control block is located between the first abutment and the second abutment; when the actuating gear rotates, the rotation control block rotates synchronously with it until it abuts against the first abutment or the second abutment to limit the maximum rotation angle of the actuating gear.

8. The door lock actuator according to claim 2, characterized in that, A touch switch is fixed on the inner wall of the second mounting half-shell; a third groove is formed on the circumferential outer wall of the mating wheel, recessed towards its axis, and the groove wall of the third groove has a smooth transition slope with the circumferential outer wall of the mating wheel; when the mating wheel rotates to the position where the third groove corresponds to the trigger end of the touch switch, the trigger end of the touch switch does not contact the mating wheel, and the touch switch is not triggered; when the mating wheel rotates to the position where the third groove is disengaged from the position corresponding to the trigger end of the touch switch, the trigger end of the touch switch abuts against the circumferential outer wall of the mating wheel, thereby triggering the touch switch.

9. The door lock actuator according to claim 2, characterized in that, The pull cord includes a self-closing pull cord, and the pull cord hole includes a self-closing pull cord hole adapted to the self-closing pull cord; the self-closing pull cord hole is formed by the corresponding edges of the first mounting half shell and the second mounting half shell; the self-closing pull cord extends into the receiving space through the self-closing pull cord hole, passes through the first channel of the actuating gear, and its end is locked in the first groove.

10. The door lock actuator according to claim 2 or 8, characterized in that, The pull cord includes an ice-breaking pull cord, and the pull cord hole includes an ice-breaking pull cord hole adapted to the ice-breaking pull cord; the ice-breaking pull cord hole is directly opened on the second mounting half shell; the ice-breaking pull cord extends into the receiving space through the ice-breaking pull cord hole, passes through the second channel of the mating wheel, and its end is locked in the second groove.

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