A control assembly for a concealed handle, method, concealed handle and vehicle

Abstract

The application relates to the technical field of automobile control, and discloses a control assembly and method of a hidden handle, the hidden handle and a vehicle. The control assembly comprises an actuator, a motion slider and a micro switch. The motion slider comprises a convex platform with a middle high and tail low structure. When the motion slider moves, the convex platform moves along a preset track. The installation position of the micro switch is such that the contact of the micro switch is on the preset track. When the motion slider moves between a state of full expansion of the handle and a state of full retraction of the handle, the contact of the micro switch and the convex platform sequentially present a relative position change relationship of no contact, contact and no contact. The application solves the problem of high vehicle assembly cost under the premise of ensuring handle in-place detection.

Description

Technical Field

[0001] This invention relates to the field of automotive control technology, and more specifically to a control component, method, hidden handle, and vehicle for a concealed handle. Background Technology

[0002] Driven by the current global wave of new energy vehicles, concealed outward-opening handles are widely used by major automakers to reduce wind resistance and improve vehicle range. These handles are operated by an actuator containing a micro-motor, which unfolds or retracts the handle. Due to the requirements of low cost and weight for the entire vehicle, the gears in the actuator are generally made of plastic, a material that cannot withstand prolonged stalling to avoid damage. To address the issue of the concealed handle actuator's inability to withstand prolonged stalling, most mainstream solutions in China currently rely on two microswitches. For example, a translational or rotary slider can be added between the actuator and the handle. When the actuator is working, the translational or rotary slider will move accordingly with the movement of the handle. Therefore, a microswitch can be added at the slider indicating the maximum extended position and the retracted position of the handle. When the handle moves to the extended or retracted position, the slider will contact the microswitch at the different positions. When the controller receives the trigger signal from the microswitch, it controls the actuator to stop working, thereby solving the problem of actuator motor stall. However, this solution requires two microswitches to detect both the extended and retracted positions of the handle. Since the handle position is in the wet area of ​​the vehicle, the microswitches often need to be imported, which increases the overall vehicle cost. Summary of the Invention

[0003] In view of this, the present invention provides a control component, method, concealed handle, and vehicle for a concealed handle to solve the problem of high vehicle assembly costs.

[0004] In a first aspect, the present invention provides a control component for a concealed handle, comprising: an actuator, a motion slider, and a micro switch; the motion slider is mounted on the push rod of the actuator and also contacts the handle body of the concealed handle; both the actuator and the micro switch are communicatively connected to a vehicle controller; the vehicle controller controls the operation of the actuator and controls the actuator to stop according to the touch signal of the micro switch; when the actuator is running, it controls the motion slider to move via the push rod; during the movement, the motion slider drives the handle body to extend or retract; the motion slider includes a boss that is higher in the middle and lower at both ends; when the motion slider moves, the boss moves along a preset trajectory; the micro switch is fixed on the base of the concealed handle; the installation position of the micro switch is such that the contact of the micro switch is on the preset trajectory, and the length of the boss is less than the stroke length on the preset trajectory, so that when the motion slider moves between the two states of the handle being fully extended and the handle being fully retracted, the contact of the micro switch and the boss sequentially exhibit a relative positional change relationship of non-contact, contact, and non-contact; the stroke length is the length of the complete stroke of the motion slider when it moves between the two states of the handle being fully extended and the handle being fully retracted.

[0005] Based on the above-mentioned technical means, each hidden handle only requires one micro switch. The unfolding and retraction of the hidden handle can be identified by the changes in the micro switch and the boss's non-contact, contact, and non-contact states. This significantly reduces the cost of automobile assembly and can also monitor the intermediate state of the handle's movement, improving the accuracy of handle state identification.

[0006] In one alternative implementation, the motion slider is a translational slider, the push rod is a translational push rod, and the preset trajectory is a straight line when the motion slider translates.

[0007] In one alternative implementation, the motion slider is a rotary slider, the push rod is a rotary push rod, and the preset trajectory is the curve of the motion slider during its rotational motion.

[0008] Based on the above technical means, the improved solution of the present invention using a micro switch can be applied to both translational handles and rotary handles, with a wide range of applications and strong adaptability.

[0009] In one alternative embodiment, the boss is rounded and chamfered. When the boss and the microswitch contacts move relative to each other, the proportion of the non-contact travel and the contact travel to the full travel is determined based on the rounding and the time of the full travel.

[0010] Based on the above technical means, when the micro switch and the boss move relative to each other, the proportion of non-contact and contact in the stroke is determined according to the rounded corner of the boss and the time of the complete stroke, so as to ensure that the micro switch contact and the boss make stable and accurate contact, and the contact time is as early as possible.

[0011] Secondly, the present invention provides a control method for a concealed handle, applied to a vehicle controller. The vehicle controller is installed in a vehicle, and the vehicle includes several concealed handles. The concealed handles are equipped with the control components for the concealed handles provided in the first aspect. The method includes: when the concealed handle is in a retracted state, if an unfolding command is received, an unfolding control signal is output to an actuator at rated power; whether a micro switch transitions from open to closed within a first preset time; if the micro switch transitions from open to closed within the first preset time, the unfolding control signal continues to be output to the actuator at rated power, and whether a micro switch transitions from closed to open within a third preset time is detected, wherein the sum of the first preset time and the third preset time is the travel time of the complete stroke of the moving slider under low temperature and low pressure conditions; when the micro switch transitions from closed to open within the third preset time, the unfolding control signal is stopped from being output to the actuator after a second preset time delay from the moment of transition, wherein both the first preset time and the second preset time are less than the third preset time.

[0012] Based on the aforementioned technical means, the ability to identify whether the concealed handle is fully extended is achieved by detecting the changes in the microswitch and the boss's states of non-contact, contact, and non-contact. Furthermore, by detecting whether the microswitch transitions from open to contact within a first preset time period, it is possible to identify whether the microswitch is faulty before the actuator operates. By detecting whether the microswitch transitions from contact to open within a third preset time period, it is possible to identify whether the microswitch experiences a sudden malfunction during actuator operation.

[0013] In one optional embodiment, if the micro switch transitions from open to closed within a first preset time, the method continues to output the deployment control signal to the actuator at rated power. After detecting whether the micro switch transitions from closed to open within a third preset time, the method further includes: if the micro switch does not transition from closed to open within the third preset time, the method stops outputting the deployment control signal to the actuator after the third preset time and generates switch fault information.

[0014] Based on the above technical means, in the event of a sudden failure of the micro switch during actuator operation, the actuator is controlled to run for a longer third preset time, thereby ensuring that the handle is fully extended without the hidden handle being frozen.

[0015] In an optional implementation, the method further includes: if the micro switch does not transition from open to closed within a first preset time, then outputting a deployment control signal to the actuator at maximum power; detecting whether the micro switch transitions from open to closed within a third preset time; if the micro switch does not transition from open to closed within the third preset time, then stopping the output of the deployment control signal to the actuator after the third preset time and generating a handle fault alarm message; if the micro switch transitions from open to closed within the third preset time, then switching to outputting the deployment control signal at rated power from the moment the transition occurs, and returning to the step of detecting whether the micro switch transitions from closed to open within the third preset time.

[0016] Based on the aforementioned technical methods, if the microswitch does not respond when the actuator initially starts running, it is considered that the microswitch may be faulty or the handle may be frozen. Therefore, the actuator is controlled to operate at maximum power. If the microswitch detects a change within a relatively long third preset time, it indicates that the switch is not faulty, the handle is frozen, and the handle has been successfully thawed. Normal handle opening can then be controlled normally. If the microswitch does not change within a relatively long third preset time, it indicates that the handle may be severely frozen or the switch may be faulty. Therefore, the actuator is directly controlled to run at maximum power for a longer period to allow the handle to open as much as possible, providing convenience for the user to open the door. Simultaneously, a handle fault alarm message is generated to inform the user that the handle may be frozen or the microswitch may be faulty.

[0017] In an optional embodiment, the method further includes: when the concealed handle is in the unfolded state, if a retraction command is received, outputting a retraction control signal to the actuator at rated power; detecting whether the micro switch transitions from open to closed within a first preset time; if the micro switch transitions from open to closed within the first preset time, continuing to output the retraction control signal to the actuator at rated power, and detecting whether the micro switch transitions from closed to open within a third preset time; when the micro switch transitions from closed to open within the third preset time, stopping the output of the retraction control signal to the actuator after a second preset time delay from the transition time.

[0018] Based on the aforementioned technical means, the system identifies whether the concealed handle has retracted properly by detecting the changes in the microswitch and the boss's states of non-contact, contact, and non-contact. Furthermore, by detecting whether the microswitch transitions from open to contact within a first preset time period, it can also identify whether the microswitch is faulty before the actuator operates. By detecting whether the microswitch transitions from contact to open within a third preset time period, it can also identify whether the microswitch experiences a sudden malfunction during actuator operation.

[0019] In one optional embodiment, if the micro switch transitions from open to closed within a first preset time, the control signal is continued to be output to the actuator at rated power. After detecting whether the micro switch transitions from closed to open within a third preset time, the method further includes: if the micro switch does not transition from closed to open within the third preset time, the output of the control signal to the actuator is stopped after the third preset time, and switch fault information is generated.

[0020] Based on the above technical means, in the event of a sudden failure of the micro switch during actuator operation, the actuator is controlled to run for a longer third preset time, thereby ensuring that the handle is retracted into place.

[0021] In an optional implementation, the method further includes: if the micro switch does not transition from open to closed within a first preset time, then the control signal is continued to be output to the actuator at rated power, and the output of the control signal to the actuator is stopped after a third preset time, while generating switch fault information.

[0022] Based on the above technical means, if the micro switch malfunctions before the actuator operates, the actuator will be directly controlled to run for a longer third preset time, thereby ensuring that the handle is retracted into place. At the same time, switch fault information will be generated to inform the user to carry out after-sales service in a timely manner.

[0023] In one optional implementation, the first preset time is determined by the following steps: Calculating a touch time threshold for the microswitch contact to touch the boss based on the product of the non-touch state travel ratio and the first target travel time; the non-touch state travel ratio is the proportion of the non-touch state travel of the boss and microswitch contact at the start of the travel to the full travel; the first target travel time is the time it takes for the moving slider to complete the full travel under preset low temperature and low pressure conditions; calculating the duration of continuous contact between the microswitch contact and the boss based on the product of the touch state travel ratio and the first target travel time; and determining a disconnection time threshold based on the sum of the duration and the touch time threshold; and determining the first preset time based on the condition that the first preset time is greater than the touch time threshold and less than the disconnection time threshold.

[0024] Based on the aforementioned technical means, the calculated first preset time can ensure that the switch malfunction or handle freezing state is identified after the travel of the switch contact and the boss is completed without contact, thereby improving the accuracy of switch malfunction or handle freezing state identification.

[0025] In one optional implementation, the second preset time is determined by the following steps: A first positioning time threshold is calculated based on the product of the non-contact travel ratio and the first target travel time. The non-contact travel ratio is the proportion of the non-contact travel of the boss and microswitch contacts at the end of the travel to the full travel. The first target travel time is the time it takes for the moving slider to complete the travel under preset low temperature and low pressure conditions. A second positioning time threshold is calculated based on the product of the non-contact travel ratio and the second target travel time. The non-contact travel ratio is the proportion of the non-contact travel of the boss and microswitch contacts at the end of the travel to the full travel. The second target travel time is the time it takes for the moving slider to complete the travel under preset high temperature and high pressure conditions. A motor stall time threshold of the actuator is obtained. The second preset time is determined based on the condition that the time difference is not greater than the motor stall time threshold and the condition that the second preset time is greater than the first positioning time threshold. The time difference is the difference between the second preset time and the second positioning time threshold.

[0026] Based on the aforementioned technical means, the calculated second preset time can ensure that the handle moves to the appropriate position of being fully extended or fully retracted, and that the motor stall time does not exceed the stall threshold.

[0027] Thirdly, the present invention provides a concealed handle, comprising: a base, a handle body, a handle torsion spring, a handle pivot, a cable rocker arm, and a control component for the concealed handle provided in any one of the first aspects; the handle body is mounted on the base via the handle pivot, the handle torsion spring is sleeved on the handle pivot, and the cable rocker arm is mounted on the base and close to the handle body; when the motion slider moves in response to an unfolding command, the motion slider pushes the handle body against the force of the handle torsion spring, causing the handle body to unfold outward via the handle pivot until the handle body and the cable rocker arm come into contact; when the motion slider moves in response to a retraction command, the motion slider releases the force pushing the handle body, so that the handle body is retracted inward by the elastic force of the handle torsion spring.

[0028] Fourthly, the present invention provides a vehicle, including a vehicle controller and a vehicle body, wherein a hidden handle provided in the third aspect is installed on the door of the vehicle body, and the vehicle controller is used to execute the method provided in any one of the second aspects to control the hidden handle.

[0029] The technical solution provided by this invention has the following advantages:

[0030] (1) According to the above technical means, each hidden handle only needs one micro switch. The hidden handle can be identified as fully extended or fully retracted based on the changes of the micro switch and the boss in the state of "no contact → contact → no contact". This significantly reduces the cost of automobile assembly and can also monitor the intermediate state of the handle movement process, thus improving the accuracy of handle state identification.

[0031] (2) Based on the above technical means, the improved scheme of the present invention using a micro switch can be applied to both translation handles and rotary handles, with a wide range of applications and strong adaptability.

[0032] (3) According to the above technical means, when the micro switch and the boss move relative to each other, the proportion of the non-touching state and the touching state in the stroke is determined according to the rounded corner of the boss and the time of the complete stroke, so as to ensure that the micro switch contact and the boss make stable and accurate contact, and the contact time is as early as possible, and the accuracy of the handle unfolding and retracting state recognition.

[0033] (4) Based on the above technical means, the identification of whether the concealed handle is fully unfolded can be achieved by detecting the changes in the micro switch and the boss between non-contact, contact, and non-contact states. In addition, by detecting whether the micro switch changes from open to contact within a first preset time, it is also possible to identify whether the micro switch has a fault before the actuator runs. By detecting whether the micro switch changes from contact to open within a third preset time, it is also possible to identify whether the micro switch has a sudden fault during the operation of the actuator.

[0034] (5) Based on the above technical means, in the event of a sudden failure of the micro switch during the operation of the actuator, the actuator is controlled to run for a longer third preset time, so as to ensure that the handle is fully extended if the hidden handle is not frozen.

[0035] (6) Based on the above technical means, if the microswitch does not respond when the actuator first starts running, it is considered that the microswitch may be faulty or the handle may be frozen. Therefore, the actuator is controlled to run at maximum power. If the microswitch detects a change after a relatively long third preset time, it indicates that the switch is not faulty, the handle is frozen, and the handle has been successfully thawed. The handle can then be opened normally. If the microswitch does not change after a relatively long third preset time, it indicates that the handle may be severely frozen or the switch may be faulty. Therefore, the actuator is directly controlled to run at maximum power for a longer period of time to open the handle as much as possible, providing convenience for the user to open the door. At the same time, an ice-breaking failure alarm message is generated to inform the user that the handle may be frozen or the microswitch may be faulty.

[0036] (7) Based on the above technical means, the identification of whether the hidden handle has been retracted to the correct position is achieved by detecting the changes in the micro switch and the boss between non-contact, contact, and non-contact states. In addition, by detecting whether the micro switch changes from open to contact within a first preset time, it is also possible to identify whether the micro switch has a fault before the actuator runs. By detecting whether the micro switch changes from contact to open within a third preset time, it is also possible to identify whether the micro switch has a sudden fault during the operation of the actuator.

[0037] (8) Based on the above technical means, in the event of a sudden failure of the micro switch during the operation of the actuator, the actuator is controlled to run for a longer third preset time, thereby ensuring that the handle is retracted into place.

[0038] (9) Based on the above technical means, if the micro switch is faulty before the actuator is running, the actuator is directly controlled to run for a longer third preset time, so as to ensure that the handle is retracted into place. At the same time, switch fault information is generated to inform the user to carry out after-sales service in a timely manner.

[0039] (10) According to the above technical means, the calculated first preset time can ensure that the switch fault or handle frozen state is identified after the travel of the switch contact and the boss is completed, thereby improving the accuracy of switch fault or handle frozen state identification.

[0040] (11) According to the above technical means, the calculated second preset time can ensure that the movement of the handle reaches the appropriate position of fully unfolding or fully retracting, and the motor stall time does not exceed the stall threshold. Attached Figure Description

[0041] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram of the structure of a sliding concealed handle commonly used in related technologies;

[0043] Figure 2 This is a schematic diagram of the structure of a rotary hidden handle commonly used in related technologies;

[0044] Figure 3 This is a schematic diagram of the structure of a control assembly for a concealed handle according to an embodiment of the present invention;

[0045] Figure 4 This is another structural schematic diagram of a control assembly for a concealed handle according to an embodiment of the present invention;

[0046] Figure 5 This is another structural schematic diagram of a control assembly for a concealed handle according to an embodiment of the present invention;

[0047] Figure 6 This is a schematic diagram of the structure of a translational handle according to an embodiment of the present invention;

[0048] Figure 7 This is a schematic diagram of a rotary handle according to an embodiment of the present invention;

[0049] Figure 8 This is a schematic diagram of the structure of a vehicle according to an embodiment of the present invention;

[0050] Figure 9 This is a flowchart illustrating a control method for a concealed handle according to an embodiment of the present invention;

[0051] Figure 10 This is another schematic flowchart of a control method for a hidden handle according to an embodiment of the present invention;

[0052] Figure 11 This is another schematic flowchart of a control method for a hidden handle according to an embodiment of the present invention;

[0053] Figure 12 This is another schematic flowchart of a control method for a hidden handle according to an embodiment of the present invention;

[0054] Figure 13 This is a timing diagram for the control of micro-switch signal transitions according to an embodiment of the present invention.

[0055] Reference numerals in the attached diagram: Actuator-01, Motion slider-02, Micro switch-03, Base-04, Boss-05, Contact-06, Translation slider-07, Rotary slider-08, Translation push rod-09, Handle body-10, Handle torsion spring-11, Handle pivot-12, Cable rocker arm-13, Cable rocker arm pivot-14, Rotary push rod-15. Detailed Implementation

[0056] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0057] Driven by the current global wave of new energy vehicles, hidden outward-opening handles are widely used by major automakers to reduce wind resistance and improve vehicle range. Currently, hidden handles are mainly of the sliding and rotary types, both requiring an actuator, including a micro-motor, to push the handle open or retract. Due to the requirements of low cost and low weight for the whole vehicle, the gears in the actuator are generally plastic gears. The material of these gears means they cannot withstand prolonged stalling to avoid damaging the gears (generally, motor stalling does not exceed 200ms). Especially under extremely high and low temperature conditions, plastic gears are more prone to deformation or brittleness and cracking, and the motor may also burn out due to prolonged stalling. To address the issue of prolonged stalling in concealed handle actuators, most mainstream domestic solutions currently rely on two microswitches. This is achieved by adding a translational or rotary slider between the actuator and the handle. When the actuator is working, the translational or rotary slider moves accordingly with the handle. Therefore, a microswitch is added at the slider indicating the maximum extended and retracted positions of the handle. When the handle moves to the extended or retracted position, the slider will contact the microswitch at the corresponding position. When the controller receives the trigger signal from the microswitch, it immediately or after a short delay controls the actuator to stop working, thus solving the problem of actuator motor stalling.

[0058] For example Figure 1 The diagram shows a commonly used sliding concealed handle in related technologies. This handle uses two microswitches to identify the retracted and extended states of the handle body. The structure includes an actuator, an actuator push rod, a sliding slider, the handle body, a handle torsion spring, a handle shaft, a cable rocker arm, a cable rocker arm shaft, an extended position microswitch, and a retracted position microswitch.

[0059] When the concealed handle is in the retracted position, the retracted position micro switch will contact the handle body. The contacts of the retracted position micro switch are compressed by the push force applied by the handle body, thus indicating that the handle body is in the retracted state. At this time, the unfolded position micro switch is not in contact with the translation slider, and the unfolded position micro switch is not compressed and is in the open state.

[0060] When the concealed handle moves from the retracted position to the extended position, the vehicle controller first drives the actuator motor to rotate forward. The actuator drives the reduction gear and then pushes the actuator push rod. The actuator push rod extends from inside the actuator, pushing the translation slider forward in a straight line. The translation slider pushes the handle body to overcome the spring force of the handle torsion spring, causing the handle body to rotate along the handle axis. The rotation of the handle body slowly changes from the retracted state to the extended state. After the handle body rotates a short distance, the retracted position microswitch separates from the handle body, and at this time the retracted position microswitch is in the off state. The actuator push rod continues to push, and a slope protrudes on the translation slider. When the translation slider moves to the extended position point A, the extended position microswitch can fully contact the slope protruding on the translation slider. At this time, the extended position microswitch is in the on state. After receiving this signal, the vehicle controller stops outputting immediately or after a short delay. If there is a delay, the translation slider quickly moves to the maximum stroke point B within the delay time to ensure that the handle moves to the maximum electric extended position. The cable rocker arm is a structure similar to a bicycle cable handbrake. By applying force to the cable rocker arm, it rotates via its pivot, pulling the door lock and unlocking the door. Therefore, when the handle body is moved to its maximum electrically extended position, the handle body and the cable rocker arm are about to make contact, but no pressure has been generated. When the user pulls the extended handle, the handle body continues to push towards the contact position with the cable rocker arm, thus pushing the cable rocker arm to rotate along its pivot, unlocking and opening the door.

[0061] For example Figure 2 The diagram shown is a structural schematic of a commonly used rotary concealed handle in related technologies. The system includes an actuator, an actuator rotary push rod, a rotary slider, a rotary slider shaft, a handle body, a handle shaft, a cable rocker arm, a cable rocker arm shaft, an unfolded position micro switch, and a retracted position micro switch.

[0062] When the concealed handle is in the retracted position, the retracted position microswitch is in contact with the rotary slider, and the microswitch is compressed and in the contact state. At this time, the unfolded position microswitch is not in contact with the rotary slider, and the unfolded position microswitch is not compressed and is in the open state.

[0063] When the concealed handle moves from the retracted position to the extended position, the vehicle controller first drives the actuator motor to rotate forward. The actuator motor drives the reduction gear and then pushes the actuator rotary push rod. The rotary push rod drives the rotary slider to rotate along the rotary slider's axis. The rotary slider drives the handle body to rotate. After the rotary slider rotates a short distance, the retracted position microswitch separates from the rotary slider, and at this time, the retracted position microswitch is in the off state. Until the rotary slider moves to point C and fully contacts the extended position microswitch, the extended position microswitch is in the on state. After receiving this signal, the vehicle controller stops outputting immediately or after a short delay. During the delay time, the rotary slider can move to the maximum stroke point D. When the handle body moves to the maximum electric extended position, the handle body is about to contact the cable rocker arm. The user needs to continue pulling the handle to unlock it. Only then will the handle body continue to push the cable rocker arm to rotate along the cable rocker arm's axis, unlocking the door and opening the door.

[0064] Both of the above solutions require two microswitches to detect both the extended and retracted positions of the handle. This dual-microswitch solution has the following main drawbacks:

[0065] ① When the handle is fully extended or fully retracted, the contacts of the two microswitches on the concealed handle are in a compressed state. Prolonged compression will make the microswitches more prone to damage.

[0066] ② Damage to the microswitch may lead to new problems such as the handle failing to fully extend and retract. Since the microswitch is primarily used to prevent actuator motor stall, its failure generally results in the inability to promptly detect whether the handle is fully extended or retracted, leading to longer actuator operation time and ultimately motor stall. However, in a two-microswitch configuration, besides causing motor stall, a microswitch failure may also cause new problems such as the handle failing to fully extend or retract. For example, if the extend position microswitch is damaged and in a normally closed state, when the drive handle changes from the retracted to the extended state, the vehicle controller first outputs an extend signal to the actuator, which then begins to control the handle's extension. However, as soon as the actuator starts working, because the extend position microswitch is normally closed, the vehicle controller immediately receives a signal indicating that the extend position microswitch is engaged. The vehicle controller mistakenly interprets the handle as fully extended and stops outputting, thus preventing the handle from fully extending. Similarly, if the retract position microswitch is damaged and in a normally open state, the handle will fail to retract completely.

[0067] ③ The more microswitches there are, the higher the vehicle cost. Because the concealed handle is located in the wet area of ​​the vehicle, the microswitches used by suppliers are generally imported products to ensure waterproofing, resulting in high unit costs and a high price for the concealed handle. Furthermore, the microswitches on the concealed handle require wiring harnesses to connect to the vehicle controller. Too many microswitches increase the number of I / O ports on the vehicle controller, leading to a larger controller size and increased cost. Additionally, the increased number of wiring harness circuits for the microswitches also increases wiring harness costs.

[0068] To solve the above problems, such as Figure 3 As shown, the present invention provides a control component for a concealed handle, the component including an actuator 01, a motion slider 02 and a micro switch 03;

[0069] The motion slider 02 is mounted on the push rod of the actuator 01. The motion slider 02 also contacts the handle body 10 of the concealed handle. The actuator 01 and the micro switch 03 are both connected to the vehicle controller. The vehicle controller is used to control the operation of the actuator 01 and to control the actuator 01 to stop according to the touch signal of the micro switch 03. When the actuator 01 is running, it is used to control the motion slider 02 to move through the push rod. During the movement, the motion slider 02 drives the handle body 10 to perform an unfolding or retracting movement.

[0070] The motion slider 02 includes a boss 05 that is high in the middle and low at both ends. When the motion slider 02 moves, the boss 05 moves along a preset trajectory. The micro switch 03 is fixed on the base 04 of the concealed handle. The installation position of the micro switch 03 ensures that the contact 06 of the micro switch 03 is on the preset trajectory. Furthermore, the length of the boss 05 is less than the stroke length on the preset trajectory, so that when the motion slider 02 moves between the two states of the handle being fully extended and fully retracted, the contact 06 of the micro switch 03 and the boss 05 sequentially exhibit a relative positional change relationship of non-contact, contact, and non-contact. The stroke length is the length of the complete stroke when the motion slider 02 moves between the two states of the handle being fully extended and fully retracted.

[0071] Specifically, in this embodiment of the invention, the actuator 01, the push rod of the actuator 01, the handle body 10, and the motion slider 02 all operate on the same principle as related technologies. The principle can be found in the aforementioned description of... Figure 1 and Figure 2 The description of the above will not be repeated here. The control components for a concealed handle provided by the present invention are applied to a concealed handle, including the improved structure of the motion slider 02 and the mounting position of the micro switch 03.

[0072] The motion slider 02 provided by this invention can be either a translational slider 07 or a rotary slider 08. The motion slider 02 needs to include a boss 05 that is higher in the middle and lower at both ends. Since the actuator 01 controls the movement trajectory of the motion slider 02, when the slider moves, the boss 05 on the slider will also move along a preset trajectory. Therefore, this invention only needs to provide one micro switch 03 for a handle. This micro switch 03 is fixed on the base 04 of the concealed handle (the base 04 is part of the concealed handle housing; the actuator 01, lock body, and other structures are all mounted on the base 04; the base 04 is prior art and will not be described further). Furthermore, the installation position of the micro switch 03 needs to ensure that its contact 06 is on the preset trajectory of the aforementioned boss 05. Furthermore, the length of the protrusion 05 on the motion slider 02 in this invention needs to be less than the travel length it traverses on the preset trajectory. This is because if the protrusion 05 is set too long, it will cause the protrusion 05 to be in constant contact with the contact 06 of the micro switch 03 during movement, making it impossible to determine whether the hidden handle is unfolded or retracted. Based on this, when the motion slider 02 moves between the fully unfolded and fully retracted states of the handle, the protrusion 05 on the motion slider 02 and the contact 06 of the micro switch 03 do not touch, regardless of whether the handle is fully unfolded or retracted. As the motion slider 02 moves, the protrusion 05 will move and touch the micro switch 03 fixed on the handle base 04. The contact 06 of the micro switch 03 is compressed, and at this time, the signal of the micro switch 03 changes from no contact to contact. This change event can inform the vehicle controller that the handle has started to unfold or retract. Afterwards, the moving slider 02 continues to move, and the entire length of the boss 05 passes over the micro switch 03. The micro switch 03 and the boss 05 separate and are in a non-contact state again. The contact 06 of the micro switch 03 changes from compressed to uncompressed, and the resulting jump signal informs the vehicle controller that the hidden handle has been extended or retracted into place. The vehicle controller stops the actuator 01 from working.

[0073] In this embodiment, when the motion slider 02 is a translational slider 07, the actuator 01's push rod is a translational push rod 09, and the preset trajectory is a straight line when the motion slider 02 translates. The relative positional relationship between the motion slider 02 and the micro switch 03 can be referenced. Figure 4 When the motion slider 02 is a rotary slider 08, the actuator 01's push rod is a rotary push rod, and the preset trajectory is the curve of the motion slider 02 during rotation. The relative positional relationship between the motion slider 02 and the micro switch 03 can be referenced. Figure 5 .

[0074] The control component of the concealed handle provided by the embodiments of the present invention has the following advantages compared with the concealed handle structure of dual microswitches:

[0075] ① When the handle is in the fully extended and fully retracted state, the contacts 06 of the micro switch 03 are in an uncompressed state, which has a greater advantage in extending the life of the micro switch 03.

[0076] ② Even if the microswitch 03 is damaged, it will not affect the full extension and retraction of the handle. Since the control component of the concealed handle provided by this invention has only one microswitch 03, and the detection of whether the handle is in position is achieved through a signal transition event from contact to disconnection of the microswitch 03, even if the microswitch 03 is damaged, regardless of whether it is normally open or normally closed, because the microswitch 03 cannot move, the vehicle controller cannot detect the signal transition event from contact to disconnection of the microswitch 03. Therefore, the vehicle controller cannot detect the handle position signal, and the vehicle controller will only control the actuator 01 to work for a long time, instead of stopping the actuator 01 at the initial moment of operation. This avoids introducing a new problem of the handle not being able to fully extend or retract on top of the vehicle stall problem, thus improving the reliability of the concealed handle control.

[0077] ③ Because the technical solution provided in this embodiment of the invention requires only one microswitch for each hidden handle, the wiring harness required for the hidden handle microswitch is also reduced accordingly, and the I / O port circuit of the vehicle controller is also reduced accordingly, thereby significantly reducing the assembly cost of the entire vehicle. Taking a 4-door vehicle as an example, the technical solution provided in this invention reduces 4 microswitches per vehicle, reduces the wiring harness from the microswitches to the vehicle control BDC by 8, and reduces the I / O ports of the vehicle control BDC by 8. The cost per vehicle can be reduced by about 60 yuan. Based on the annual sales of 500,000 vehicles by the car manufacturer, the cost can be reduced by 30 million yuan per year.

[0078] In some alternative embodiments, the boss 05 on the motion slider 02 is rounded and chamfered. When the boss 05 and the contact 06 of the micro switch 03 move relative to each other, the proportion of the non-contact state travel and the contact state travel to the full travel is determined according to the rounding and the time of the full travel.

[0079] Specifically, since the contacts 06 of the micro switch 03 and the boss 05 on the moving slider 02 need to make contact to generate a signal transition, protecting the lifespan of the micro switch 03 is crucial. If the boss 05 is too rough, it can easily scratch the rubber on the contacts of the micro switch 03. Therefore, by rounding and chamfering the boss 05 on the moving slider 02, the friction between the boss 05 and the micro switch 03 is reduced, thereby lowering the risk of the contacts 06 of the micro switch 03 being scratched.

[0080] In addition, with Figure 4For example, a complete travel of the motion slider 02 is from one end of the travel path to another. Since the "disconnect-contact" state transition between the micro switch 03 and the motion slider 02 is used to identify whether the hidden handle has started to unfold / retract, and the "contact-disconnect" state transition between the micro switch 03 and the motion slider 02 is used to identify whether the hidden handle has unfolded / retracted to the correct position, the proportion of the travel time in the non-contact state to the total travel time is also crucial. If the travel time in the non-contact state is too long (the vehicle controller cannot receive a signal in the non-contact state), it will cause the vehicle controller to have too large an error in recognizing whether the handle has started to move and whether the handle has reached the correct position, resulting in poor handle controllability. If the required travel time in the non-contact state is too short, then the length of the boss 05 needs to be increased, and the radius of the rounded corner of the boss 05 needs to be smaller, which will worsen the smoothness of the boss 05 and hinder the contact between the boss 05 and the micro switch 03. Therefore, in this embodiment of the invention, the proportions of the non-contact travel and the contact travel between the micro switch 03 and the boss 05 relative to the total travel need to be determined based on the fillet radius and the time of the total travel, in order to further improve the accuracy of controlling the concealed handle. For example... Figure 4 As shown, in one specific embodiment, the non-touching state travel accounts for 15% of the complete travel. Based on the length of the boss 05, the contact travel between the boss 05 and the micro switch 03 accounts for 70% of the complete travel. Thus, the micro switch 03 and the boss 05 are disconnected at 0-15% of the travel, the micro switch 03 and the boss 05 are in contact at 15%-85% of the travel, and the micro switch 03 and the boss 05 are disconnected at 85%-100% of the travel. This is only an example and is not limited to this.

[0081] This invention also provides a concealed handle, which includes: a base 04, a handle body 10, a handle torsion spring 11, a handle pivot 12, a cable rocker arm 13, and the control components of the concealed handle provided in the aforementioned embodiments; wherein, the handle body 10 is mounted on the base 04 via the handle pivot 12, the handle torsion spring 11 is sleeved on the handle pivot 12, and the cable rocker arm 13 is mounted on the base 04 and close to the handle body 10. When the motion slider 02 moves in response to the unfolding command, the motion slider 02 pushes the handle body 10 against the force of the handle torsion spring 11, causing the handle body 10 to unfold outward via the handle pivot 12 until the handle body 10 and the cable rocker arm 13 come into contact; when the motion slider 02 moves in response to the retraction command, the motion slider 02 releases the force pushing the handle body 10, so that the handle body 10 is twisted inward by the elastic force of the handle torsion spring 11.

[0082] The concealed handle provided by the embodiments of the present invention can detect the handle's position using a single micro switch 03. It also has the advantages of extending the life of the micro switch 03, avoiding incomplete handle unfolding / retraction due to damage to the micro switch 03, and reducing vehicle assembly costs.

[0083] Specifically, taking a sliding handle as an example, the structure of a concealed handle is as follows: Figure 6 As shown, the motion slider 02 is a translational slider 07, the actuator 01's push rod is a translational push rod 09, and the handle includes a base 04, actuator 01, translational push rod 09, translational slider 07, handle body 10, handle torsion spring 11, handle pivot 12, cable rocker arm 13, cable rocker arm pivot 14, and micro switch 03. Except for the control components of the concealed handle provided in this embodiment, the connection relationships and operating principles of other components of the concealed handle are the same as those of related components in the prior art, and can be referred to the foregoing. Figure 1 The relevant descriptions will not be repeated here.

[0084] When the vehicle controller executes the normal extension movement of the handle, the handle is initially in the retracted state, and micro switch 03 is not in contact with the translation slider 07, so micro switch 03 is in the open state. The vehicle controller first drives the motor of actuator 01 to rotate forward. Actuator 01 drives the reduction gear and then pushes the translation push rod 09 of actuator 01. The translation push rod 09 pushes the translation slider 07 to extend from the position of actuator 01 and move linearly. The translation slider 07 pushes the handle body 10 to overcome the handle torsion spring 11 and rotate along the handle shaft 12. When the handle has just moved a short distance, micro switch 03 is fully in contact with the translation slider 07 and is in the on state. Until the translation slider 07 moves to its maximum stroke, at this time, micro switch 03 separates from the translation slider 07 and is in the open state again. When the vehicle controller receives the jump signal of micro switch 03 from contact to disconnection, it extends the operation of actuator 01 for a short period of time and then stops the operation of micro switch 01, allowing the handle to move to the maximum electric extension position. When the handle is moved to the maximum electric extension position, the handle body 10 is about to contact the cable rocker arm 13. When the user pulls the handle, the handle body 10 will continue to push the cable rocker arm 13. The cable rocker arm 13 rotates along the cable rocker arm pivot 14 until the door is unlocked.

[0085] When the vehicle controller executes the normal retraction movement of the handle, the concealed handle is in the unfolded state, and the micro switch 03 is not in contact with the translation slider 07, so the micro switch 03 is in the open state. The vehicle controller first drives the motor of the actuator 01 to rotate in the reverse direction. The motor of the actuator 01 drives the reduction gear and then pulls the push rod of the actuator 01. The push rod of the actuator 01 pulls the translation slider 07 to move backward in a straight line. When the translation slider 07 moves backward, the handle body 10 loses the limit of the translation slider 07, the handle torsion spring 11 rotates, thereby driving the handle body 10 to retract along the handle shaft 12. When the handle body 10 has just started to move a short distance, the micro switch 03 is in full contact with the translation slider 07 and the micro switch 03 is in the on state. Until the translation slider 07 is about to move to the minimum stroke, the micro switch 03 separates from the translation slider 07 and the micro switch 03 is in the off state again. The vehicle controller receives the jump signal from the micro switch 03 from contact to disconnection, and after a short period of time, stops the operation of the actuator 01, causing the handle to move to the fully retracted position.

[0086] Specifically, taking a rotary handle as an example, the structure of a concealed handle is as follows: Figure 7 As shown, the motion slider 02 is a rotary slider 08, the actuator 01's push rod is a rotary push rod, and the handle includes a base 04. Figure 7 (Not shown), actuator 01, rotary push rod 15, rotary slider 08, handle body 10, handle torsion spring 11, handle shaft 12, cable rocker arm 13, cable rocker arm shaft 14, micro switch 03. Except for the control components of the concealed handle provided in this embodiment, the other components and their connections are the same as those in the prior art, and their operating principles are also the same. Please refer to the foregoing... Figure 2 The relevant descriptions will not be repeated here.

[0087] When the vehicle controller executes the normal unfolding movement of the handle, the handle is initially in the retracted state, and micro switch 03 is not in contact with the rotary slider 08, meaning micro switch 03 is in the open state. The vehicle controller first drives the motor of actuator 01 to rotate forward. Actuator 01 drives the reduction gear and then pushes the rotary push rod 15 of actuator 01. The rotary push rod 15 drives the rotary slider 08 to rotate along the slider's axis. The rotation of the rotary slider 08 pushes the handle body 10 to overcome the handle torsion spring 11 and rotate along the handle's pivot 12. When the handle has just moved a short distance, micro switch 03 is fully in contact with the rotary slider 08, and micro switch 03 is in the on state. Until the rotary slider 08 is about to move to its maximum stroke, micro switch 03 separates from the rotary slider 08, and micro switch 03 is in the open state again. When the vehicle controller receives the transition signal from contact to disconnection from micro switch 03, it delays for a short period before stopping the operation of actuator 01, allowing the handle to move to its maximum electric unfolding position. When the handle is moved to the maximum electric extension position, the handle body 10 is about to contact the cable rocker arm 13. When the user pulls the handle, the handle body 10 will continue to push the cable rocker arm 13. The cable rocker arm 13 rotates along the cable rocker arm pivot 14 until the door is unlocked.

[0088] When the vehicle controller executes the normal retraction movement of the handle, the concealed handle is in the unfolded state, and the micro switch 03 is not in contact with the rotary slider 08, so the micro switch 03 is in the open state. The vehicle controller first drives the motor of the actuator 01 to rotate in the opposite direction. The motor of the actuator 01 drives the reduction gear and then drives the rotary push rod 15 of the actuator 01 to rotate in the opposite direction. The rotary push rod 15 pulls the rotary slider 08 to rotate in the opposite direction. When the rotary slider 08 rotates, the rotary slider 08 moves away from the handle body 10, and the handle body 10 loses the limit of the rotary slider 08. The handle torsion spring 11 rotates, thereby driving the handle body 10 to retract along the handle shaft 12. When the handle body 10 has just started to move a short distance, the micro switch 03 is in full contact with the rotary slider 08 and the micro switch 03 is in the on state. Until the rotary slider 08 is about to move to the minimum stroke, the micro switch 03 separates from the rotary slider 08 and the micro switch 03 is in the off state again. The vehicle controller receives the jump signal from the micro switch 03 from contact to disconnection, and after a short period of time, stops the operation of the actuator 01, causing the handle to move to the fully retracted position.

[0089] According to embodiments of the present invention, a vehicle is also provided, such as Figure 8 As shown, the vehicle includes a vehicle controller and a vehicle body, with the concealed handles provided in the aforementioned embodiment installed on the vehicle body's doors. This reduces the overall vehicle assembly cost and improves the control accuracy of the concealed handles, avoiding issues such as handles not fully unfolding or retracting.

[0090] According to an embodiment of the present invention, a control method embodiment for a hidden handle is also provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0091] This embodiment provides a control method for a concealed handle, which can be used in a vehicle controller. The vehicle controller is installed in a vehicle, and the vehicle includes several concealed handles. The concealed handles are installed on the doors for opening the doors. The control components for the concealed handle provided in the aforementioned embodiment are installed in the concealed handles. Figure 9 This is a flowchart of a control method for a hidden handle according to an embodiment of the present invention, the process including the following steps:

[0092] Step S900: Obtain the current state of the hidden handle;

[0093] Step S901: When the concealed handle is in the retracted state, if an unfolding command is received, an unfolding control signal is output to the actuator at rated power.

[0094] Step S902: Detect whether the micro switch changes from open to closed within a first preset time period;

[0095] Step S903: If the micro switch transitions from open to closed within the first preset time, the control signal continues to be output to the actuator at the rated power, and the micro switch is checked for transitions from closed to closed within the third preset time. The sum of the first preset time and the third preset time is the travel time of the complete stroke of the moving slider under low temperature and low pressure conditions.

[0096] Step S904: When the micro switch transitions from contact to disconnection within a third preset time, the output of the deployment control signal to the actuator is stopped after a second preset time delay from the transition time. Both the first and second preset times are less than the third preset time.

[0097] Specifically, before controlling the concealed handle, the vehicle controller first obtains the current state of the concealed handle, which may be either an unfolded or retracted state. Since the microswitch contacts are in an uncompressed state regardless of whether the handle is unfolded or retracted, this application does not determine the current state of the handle based on the state of the microswitch, but only on the switching event of the microswitch. Therefore, this application obtains the current state of the handle by reading locally stored control information.

[0098] For example, to accurately determine whether the handle is currently in the extended or retracted state, this invention ensures that the handle is always in the retracted state when it is installed in the vehicle. Simultaneously, the initial state signal of the handle, indicating the retracted state, is also written into the vehicle controller based on the handle's current state. Later, when the vehicle is put into use, since the vehicle controller needs to rotate the actuator motor forward to extend the handle and reverse it to retract it, the vehicle controller performs a comprehensive analysis based on the handle's state in the previous control cycle and the motor's direction after each handle control, i.e., it records the current state of the concealed handle. For example, assuming the handle is in the retracted state when the vehicle is officially put into use, the vehicle controller's first control of the handle requires rotating the actuator motor forward for the handle to operate; reversing the motor will prevent rotation. Therefore, upon successfully completing the first control, the vehicle controller records that the handle state has changed from the retracted to the extended state. Before the second control, the vehicle controller can directly read local information to obtain the handle's state before the second control as the extended state. The vehicle controller records the state after each control operation, and this cycle continues, ensuring the accuracy of the concealed handle's current state.

[0099] According to the control component for the concealed handle provided by the present invention, steps S901 to S904 are an unfolding control strategy performed under the condition that the microswitch has not malfunctioned. Specifically, when the concealed handle is currently in the retracted state, if the vehicle controller receives an unfolding command, it performs handle unfolding control. The unfolding command can be triggered by the user's actions such as unlocking the car with the key or placing their hand near the concealed handle; this is merely an example and not a limitation.

[0100] When the vehicle controller receives the unfolding command, it immediately outputs an unfolding control signal to the actuator at rated power. The actuator controls the movement of the slider, thereby pushing the handle outwards. Then, within a short first preset time (e.g., 300ms), the vehicle controller checks whether the signal from the microswitch shows a transition from open to closed. If a transition occurs, it indicates that the protrusion of the slider has made contact with the microswitch, meaning the handle can be normally unfolded. The vehicle controller continues to output the unfolding control signal to the actuator at rated power. Afterwards, within a longer third preset time, it checks whether the microswitch shows a transition from closed to open. Because the moving slider moves faster under high temperature and high pressure conditions and slower under low temperature and low pressure conditions, this embodiment predefines high temperature and high pressure conditions and low temperature and low pressure conditions according to the corresponding temperature and pressure thresholds. Under the preset low temperature and low pressure conditions, the measured stroke time of the complete stroke of the moving slider can characterize the time it takes for the boss and micro switch to change from a contact state to an open state when the moving slider moves at the slowest speed. Based on this, this embodiment defines the sum of the first preset time and the third preset time as the stroke time of the complete stroke of the moving slider under low temperature and low pressure conditions. For example, assuming the stroke time of the complete stroke of the moving slider under low temperature and low pressure conditions is 1400ms, it can be understood that even if the boss moves at the slowest speed, the boss and micro switch should go through a complete process of "no contact → contact → no contact" after 1400ms. Generally, the complete process of "no contact → contact → no contact" between the boss and micro switch is usually less than 1400ms.

[0101] Taking the first preset time of 300ms as an example, the calculated third preset time is 1400-300=1100ms. That is, when the microswitch detects a transition from disconnection to contact within the first preset time of 300ms, and continues to detect a transition from contact to disconnection within the third preset time of 1100ms, it indicates that the microswitch and the boss can normally touch and separate. In other words, the microswitch did not malfunction before and during the contact process, and the "no contact → contact → no contact" change in state between the microswitch and the boss can be accurately detected. Therefore, the "no contact → contact" state can be used to determine whether the handle has started to unfold, and the "contact → no contact" state can be used to determine whether the handle has unfolded to its maximum position.

[0102] Furthermore, in this embodiment, to ensure the detection of the "touch → no touch" transition event, the length of the boss cannot be the same as the full stroke length. After the boss and the microswitch are disconnected, for example... Figure 4As shown, there is often a short suspended travel distance. Therefore, in this embodiment, the output of the unfolding control signal to the actuator is stopped after a small second preset time from the moment of the "touch → no touch" transition, ensuring that the handle is unfolded in place.

[0103] In some alternative embodiments, after step S903, the method further includes:

[0104] Step S905: If the micro switch does not transition from contact to disconnection within the third preset time, the output of the deployment control signal to the actuator will stop after the third preset time, and a switch fault information will be generated.

[0105] Specifically, according to the aforementioned embodiment, the third preset time is used to indicate that the moving slider should move at the theoretically slowest speed and the micro switch should have been disconnected (i.e., the handle should have been fully extended at the slowest speed). If the micro switch does not exhibit a transition from contact to disconnection within the third preset time, for example, if the vehicle controller does not detect a "contact → non-contact" disconnection event between the boss and the micro switch within 1100ms, it indicates that although the micro switch was not faulty at the start of the handle extension, it is highly likely that a fault occurred during the handle extension process. To ensure the handle is fully extended, the vehicle controller needs to control the actuator to work for a longer third preset time and stop outputting the extension control signal to the actuator after the third preset time. Subsequently, this embodiment also generates switch fault information through the vehicle controller to notify the user to promptly provide after-sales service for the micro switch.

[0106] In some optional embodiments, after step S902 above, the control method for the concealed handle provided in this embodiment of the invention further includes the following steps:

[0107] In step S906, if the micro switch does not transition from open to closed within a first preset time, the control signal is sent to the actuator at maximum power output.

[0108] Specifically, if the microswitch does not detect the transition from open to closed within a first preset time (e.g., 300ms) after the vehicle controller outputs the unfolding control signal, there are two possible scenarios: one is that the handle cannot unfold due to ice formation on the vehicle body or external obstruction, so the boss and the microswitch cannot make contact from the beginning; the other is that the handle has already started unfolding, but because the microswitch is in a normally open fault state, the vehicle controller cannot detect the contact signal between the microswitch and the boss. Based on this, the present invention determines that the handle is in an unfolding state due to factors such as freezing, and outputs the unfolding control signal to the actuator at maximum power through the vehicle controller, thereby using greater force to push the handle unfold, ensuring that the hidden handle can pop out.

[0109] Step S907: Detect whether the micro switch transitions from open to closed within a third preset time period.

[0110] Step S908: If the micro switch does not transition from open to closed within the third preset time, then after the third preset time, the output of the unfolding control signal to the actuator will stop and a handle fault alarm message will be generated.

[0111] In step S909, if the micro switch transitions from open to closed within a third preset time, the rated power output control signal is switched from the moment the transition occurs, and the process returns to step S903.

[0112] Specifically, after the first preset time, similar to steps S904 and S905 above, the vehicle controller continues to detect whether the micro switch transitions from contact to disconnection within the third preset time. If a transition from disconnection to contact is detected, it indicates that the micro switch is not faulty, and the hidden handle has overcome external forces such as ice formation on the vehicle body, enabling successful handle deployment and ice breaking. From the moment of the transition from "no contact → contact", this embodiment stops the vehicle controller from outputting the maximum power deployment control signal, instead switching to the rated power output deployment control signal to extend motor life and reduce energy waste. It then returns to step S903 for normal handle control, similarly stopping the output of the deployment control signal to the actuator after a second preset time delay to ensure the handle is fully deployed.

[0113] If no "no touch → touch" transition event is detected within the third preset time, it indicates that the microswitch may be faulty, or that external force caused by factors such as ice buildup on the vehicle body is too strong, preventing the actuator from ejecting the handle even at maximum power output. In this case, the vehicle body controller generates a handle fault alarm message, informing the user to check the hidden handle on the vehicle body in a timely manner. If no external interference such as ice buildup is found, it can be determined that the microswitch is faulty and after-sales repair should be carried out promptly.

[0114] In some alternative implementations, such as Figure 10 As shown, the control method for a hidden handle provided by the present invention further includes:

[0115] Step S1001: When the concealed handle is in the unfolded state, if a retraction command is received, a retraction control signal is output to the actuator at rated power.

[0116] Specifically, when the concealed handle begins to extend, if the vehicle controller receives a retraction command, it outputs a retraction control signal of rated power to the actuator, which then drives the motion slider to move in the opposite direction, retracting the handle. The retraction command can be triggered by the vehicle locking action or by the concealed handle extending for a certain time threshold, such as automatically triggering the retraction command if the handle extends for more than 20 seconds. This is just one example and not a limitation.

[0117] Step S1002: Detect whether the micro switch changes from open to closed within a first preset time period.

[0118] Step S1003: If the micro switch transitions from open to closed within a first preset time, the control signal is returned to the actuator at the rated power, and the micro switch is checked for transitions from closed to closed within a third preset time.

[0119] Step S1004: When the micro switch transitions from contact to disconnection within a third preset time, the output of the control signal to the actuator is stopped and retracted after a second preset time delay from the transition time.

[0120] Specifically, when the current state of the concealed handle is the unfolded state, steps S1001 to S1004 are the control method for the handle to retract from unfolded to retracted under the condition that the micro switch is fault-free. The control method for the handle retraction under the condition that the micro switch is fault-free is the same as the handle unfolding process. In both cases, the micro switch is detected to change from open to closed within a first preset time to determine that the handle has started to retract. The micro switch is detected to change from closed to open within a third preset time to determine that the handle is basically retracted. Then, the output of the retraction control signal to the actuator is stopped after a second preset time to ensure that the handle is definitely retracted. The relevant principle explanation can be referred to the relevant description of steps S901 to S904 above, and will not be repeated here.

[0121] In some alternative implementations, after step S1003, the method further includes:

[0122] Step S1005: If the micro switch does not transition from contact to disconnection within the third preset time, the output of the control signal to the actuator will be stopped after the third preset time, and a switch fault information will be generated.

[0123] Specifically, since the handle retraction process does not involve ice breaking, if the vehicle controller detects a transition from open to closed on the microswitch within the first preset time, but does not detect a transition from closed to open on the microswitch within the subsequent third preset time, it indicates that the microswitch did not malfunction at the initial moment of handle retraction, but malfunctioned during the retraction process. Therefore, to ensure the handle retracts fully, this embodiment controls the actuator to run for a longer third preset time through the vehicle controller. This ensures the handle retracts fully under the longest possible control time under low temperature and low pressure conditions. After this, a switch fault message is generated to remind the user to promptly request after-sales maintenance.

[0124] In some alternative implementations, after step S1002, the method further includes:

[0125] Step S1006: If the micro switch does not transition from open to closed within the first preset time, the control signal is continued to be output to the actuator at the rated power, and the output of the control signal to the actuator is stopped after the third preset time, while a switch fault information is generated.

[0126] Specifically, similar to the unfolding process, if the vehicle controller does not detect the transition of the micro switch from open to closed within the first preset time, since there is no ice breaking during the retraction process of the micro switch, it can be determined that the micro switch malfunctioned at the initial moment of the handle retraction. Therefore, in this embodiment, the vehicle controller outputs the retraction control signal for a relatively long third preset time, and then stops outputting the retraction control signal to the actuator to ensure that the handle is retracted in place. At the same time, a switch fault information is generated to remind the user to seek after-sales service in a timely manner.

[0127] The technical solution provided by this invention enables the vehicle controller to identify whether the hidden handle is fully extended / retracted based on the changing states of the microswitch and the boss, transitioning from "not touching" to "touching" to "not touching". This single microswitch can identify the handle's position, significantly reducing vehicle assembly costs. Compared to solutions using two microswitches, this invention also avoids introducing the new problem of the handle stopping as soon as it begins to move.

[0128] Furthermore, by detecting whether the microswitch transitions from open to closed within a first preset time, the technical solution provided by this invention can also identify whether the microswitch is faulty before the actuator operates. By detecting whether the microswitch transitions from closed to open within a third preset time, it can also identify whether the microswitch suddenly malfunctions during actuator operation. Additionally, in the event of a sudden microswitch malfunction during actuator operation, controlling the actuator to run for a longer third preset time ensures that the handle can be extended or retracted as much as possible, provided the hidden handle is not frozen.

[0129] Additionally, regarding the handle unfolding process, if the microswitch does not respond at the beginning of the actuator's operation, it may indicate a microswitch malfunction or a frozen handle. Therefore, the actuator is controlled to operate at maximum power. If the microswitch detects a change within a relatively long, third preset time, it indicates the switch is not faulty and the handle has successfully thawed, allowing for normal handle unfolding control afterwards. If the microswitch does not change within the same timeframe, it suggests the handle may be severely frozen or the switch may be faulty. In this case, the actuator is directly controlled to operate at maximum power for an extended period to unfold the handle as much as possible, providing convenience for the user. Simultaneously, an ice-breaking failure alarm is generated, informing the user that the handle may be frozen solid or the microswitch may be faulty.

[0130] Furthermore, in the event of a sudden microswitch malfunction during actuator operation, the actuator will be controlled to run for an extended third preset time to ensure the handle retracts fully. Similarly, if the microswitch malfunctions before actuator operation, the actuator will also be directly controlled to run for an extended third preset time to ensure the handle retracts fully. Simultaneously, after controlling the actuator to run for the extended third preset time during the retraction process, a switch fault information will be generated, allowing the user to promptly request after-sales service, preventing disruption to normal use and improving the user experience.

[0131] In some alternative implementations, the first preset time is determined by the following steps:

[0132] Step a1: Calculate the contact time threshold of the micro switch contact touching the boss based on the product between the non-touch state travel ratio and the first target travel time. The non-touch state travel ratio is the proportion of the non-touch state travel of the boss and the micro switch contact at the beginning of the travel to the full travel. The first target travel time is the time for the moving slider to move the full travel under preset low temperature and low pressure conditions.

[0133] Step a2: Calculate the duration of continuous contact between the microswitch contact and the boss based on the product between the touch state travel ratio and the first target travel time, and determine the disconnection time threshold based on the sum of the duration and the touch time threshold.

[0134] Step a2: Determine the first preset time based on the condition that the first preset time is greater than the touch time threshold and less than the disconnection time threshold.

[0135] Specifically, the first preset time provided in this embodiment of the invention is used to identify whether the boss and the micro switch are definitely not in contact or whether the micro switch is faulty at the initial moment. Based on the product of the non-contact travel ratio and the current travel time, a contact time threshold for the micro switch contact to contact the boss is calculated. Additionally, based on the product of the contact travel ratio and the first target travel time, the theoretically longest continuous contact duration between the micro switch contact and the boss is calculated. Then, the duration is added to the contact time threshold to determine the disconnection time threshold. Finally, the first preset time is determined based on the condition that the first preset time is greater than the contact time threshold and less than the disconnection time threshold.

[0136] For example, assuming the current environmental conditions are predefined high temperature and high pressure conditions, the test results show that the travel time of the moving slider for a complete stroke is 700ms, of which the proportion of the travel in the non-touching state is... Figure 4 Taking 15% as an example, 700ms × 15% = 105ms, indicating that under the preset high temperature and high pressure conditions, the boss and the micro switch will theoretically touch after 105ms at their fastest moving speed. Assuming the current environmental conditions are the predefined low temperature and low pressure conditions, the test results show that the travel time for the moving slider to complete one full stroke is 1400ms, of which the proportion of the travel in the non-touching state is... Figure 4 The 15% shown means that 1400ms × 15% = 210ms, indicating that under the preset low temperature and low pressure conditions, the boss and the microswitch will theoretically contact each other after 210ms at the slowest movement speed. Therefore, as long as the defined first preset time is greater than 210ms under the preset low temperature and low pressure conditions (for example, defining the first preset time as 300ms), if the vehicle controller does not detect the microswitch's transition from open to closed after the first preset time, it can be determined that the microswitch has not been triggered even under the slowest movement condition, thus indicating a microswitch malfunction or icing problem on the vehicle body. This significantly improves the accuracy of the first preset time definition and enhances the accuracy of microswitch fault identification.

[0137] Continue with Figure 4 For example, the travel of the boss and the micro switch in the contact state accounts for 70% of the complete travel. The boss and the micro switch should occupy 85% of the complete travel from contact to disconnection. Therefore, even if the moving slider completes 85% of the travel at the slowest speed, the first switching signal of the micro switch should be detected. In order to avoid the first preset time value being infinitely large, this embodiment limits the maximum value of the first preset time to no more than the disconnection time threshold. The disconnection time threshold is 1400ms × 85% = 1190ms.

[0138] In some alternative implementations, the second preset time is determined by the following steps:

[0139] Step b1: Calculate the first arrival time threshold for the handle to be fully in place based on the product of the non-touch state travel ratio and the first target travel time. The non-touch state travel ratio is the proportion of the non-touch state travel of the boss and micro switch contacts at the end of the travel to the full travel. The first target travel time is the time for the moving slider to move the full travel under preset low temperature and low pressure conditions.

[0140] Step b2: Calculate the second arrival time threshold for the handle to be fully in place based on the product of the non-touch state travel ratio and the second target travel time. The non-touch state travel ratio is the proportion of the non-touch state travel of the boss and micro switch contacts at the end of the travel to the full travel. The second target travel time is the time it takes for the moving slider to move the full travel under the preset high temperature and high pressure conditions.

[0141] Step b3: Obtain the motor stall time threshold of the actuator;

[0142] Step b4: Based on the condition that the time difference is not greater than the motor stall time threshold and the condition that the second preset time is greater than the first arrival time threshold, the second preset time is determined together, and the time difference is the difference between the second preset time and the second arrival time threshold.

[0143] Specifically, the arrival time threshold for the handle to be fully in position is first calculated by multiplying the non-touch state travel ratio and the current travel time. Continuing with the above embodiment as an example, assuming the current travel time of the motion slider moving a complete stroke under preset high temperature and high pressure conditions is 700ms, and the non-touch state travel ratio is 15%, then the time from the moment the motion slider and micro switch are disconnected to the moment the handle is fully in position should be 700ms × 15% = 105ms. This embodiment sets this as the second arrival time threshold for the handle to be fully in position under preset high temperature and high pressure conditions. Assuming the current travel time of the motion slider moving a complete stroke under preset low temperature and low pressure conditions is 1400ms, and the non-touch state travel ratio is 15%, then the time from the moment the motion slider and micro switch are disconnected to the moment the handle is fully in position should be 1400ms × 15% = 210ms. This embodiment sets this as the first arrival time threshold for the handle to be fully in position under preset low temperature and low pressure conditions.

[0144] Then, the motor stall time threshold of the actuator is obtained. The motor stall time threshold is determined according to the attributes of the motor product. Different motors have different rated stall times. In this embodiment, 200ms is used as an example.

[0145] Subsequently, the second preset time determined in this embodiment must meet the following conditions: the second preset time is greater than the first arrival time threshold, and the difference between the second preset time and the second arrival time threshold is not greater than the motor stall time threshold. In other words, for example: the second preset time > 210ms, and the second preset time - 105ms ≤ 200ms. Assuming the second preset time is selected as 240ms, then a 240ms delay in motor operation can ensure that: 1. Even if the moving slider moves at the slowest speed under preset low temperature and low pressure conditions, the last 15% of the slider's stroke (i.e., 210ms) can be completed after a 240ms delay, ensuring that the handle is retracted or extended; 2. Even if the moving slider moves at the fastest speed under preset high temperature and high pressure conditions, the motor stall time after 105ms is calculated as 240ms - 105ms = 135ms, which also meets the requirement that the stall time does not exceed 200ms. Therefore, 240ms is an optional value for the second preset time, used only as an example and not as a limitation. This method ensures that the predetermined second preset time not only guarantees that the handle is fully extended or retracted, but also prevents the motor from stalling for an extended period when the handle is fully extended or retracted, thus extending the motor's lifespan.

[0146] In a specific application embodiment, the complete process of the technical solution provided by the present invention is as follows:

[0147] like Figure 11 The diagram shown is a flowchart illustrating the control method of a retracted handle, from its retracted state to its extended state. Figure 12 The diagram shows a flowchart illustrating the control method of a retractable handle, from its extended to its retracted state. Figure 13 The diagram shown is a control timing diagram for detecting a change in the microswitch signal.

[0148] In the first scenario, if the microswitch is not faulty, the vehicle controller outputs a control signal at rated power to unfold and retract the concealed handle. Initially, during each single stroke of the unfolding and retracting process, a signal from the microswitch (falling edge-rising edge-falling edge) is received. The falling edge indicates that the boss and microswitch are disconnected, and the rising edge indicates that they are in contact. The unfolding stroke takes T1 + 240 ms, where T1 = the time difference between the start of the stroke and the receipt of the second falling edge signal. The retracting stroke takes T2 + 240 ms, where T2 = the time difference between the start of the stroke and the receipt of the second falling edge signal.

[0149] If the handle is frozen, the vehicle controller initially outputs a release control signal to the actuator at rated power. If it does not receive a falling-edge to rising-edge transition from the microswitch within 300ms, the vehicle controller initiates the ice-breaking mode, driving the actuator at maximum power. If a falling-edge to rising-edge transition from the microswitch is received during the ice-breaking output process, it indicates that the microswitch is functioning correctly and the ice-breaking is successful. The vehicle controller then switches back to outputting the release control signal at rated power. If the vehicle controller does not receive a falling-edge to rising-edge transition from the microswitch, the ice-breaking output signal ends after 1100ms, indicating either forced ice-breaking or the handle has been forcibly released, generating a corresponding ice-breaking failure message.

[0150] In the second scenario, the microswitch is in a normally open fault. When the vehicle controller outputs a control signal at rated power to unfold the handle, if no transition from falling edge to rising edge is received from the microswitch within 300ms, the ice-breaking mode is initiated. The vehicle controller starts driving the actuator at maximum power, and the ice-breaking output ends after 1100ms.

[0151] When the vehicle controller outputs a retraction control signal at rated power to retract the concealed handle, if no transition from falling edge to rising edge of the microswitch is received within 300ms, the actuator will continue to be driven at rated power, and the entire retraction stroke will end in 1400ms.

[0152] The third scenario involves a normally closed fault in the microswitch. When the vehicle controller outputs an unfold control signal at rated power to unfold the concealed handle, if no transition from a falling edge to a rising edge is received from the microswitch within 300ms, the actuator continues to be driven at rated power, and the entire unfolding stroke ends in 1400ms. Conversely, when the vehicle controller outputs a retract control signal at rated power to retract the concealed handle, if no transition from a falling edge to a rising edge is received from the microswitch within 300ms, the actuator continues to be driven at rated power, and the entire retracting stroke ends in 1400ms.

[0153] The above three scenarios encompass the normal and fault modes of the microswitch, and a control timing diagram for the vehicle controller is provided. Even if the microswitch malfunctions, the handle can still be deployed and retracted normally, although the motor running time is slightly extended. This hidden handle control system, device, and method based on a single microswitch avoids the situation where the hidden handle of a dual-microswitch scheme cannot be deployed and retracted normally due to microswitch failure modes.

[0154] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A control assembly for a concealed handle, characterized in that, include: Actuators, motion sliders, and micro switches; The motion slider is mounted on the push rod of the actuator, and the motion slider also contacts the handle body of the concealed handle. Both the actuator and the micro switch are communicatively connected to the vehicle controller. The vehicle controller is used to control the operation of the actuator and to control the actuator to stop according to the touch signal of the micro switch. When the actuator is running, it is used to control the movement slider to move through the push rod. During the movement, the movement slider drives the handle body to unfold or retract. The motion slider includes a boss that is higher in the middle and lower at both ends. When the motion slider moves, the boss moves along a preset trajectory. The micro switch is fixed on the base of the concealed handle. The installation position of the micro switch is such that the contact of the micro switch is on the preset trajectory. Furthermore, the length of the boss is less than the stroke length on the preset trajectory, so that when the motion slider moves between the fully extended and fully retracted states of the handle, the contact of the micro switch and the boss successively exhibit a relative positional change relationship of non-contact, contact, and non-contact. The stroke length is the length of the complete stroke of the motion slider when it moves between the fully extended and fully retracted states of the handle.

2. The control assembly for the concealed handle according to claim 1, characterized in that, The motion slider is a translational slider, the push rod is a translational push rod, and the preset trajectory is a straight line when the motion slider translates.

3. The control assembly for the concealed handle according to claim 1, characterized in that, The motion slider is a rotary slider, the push rod is a rotary push rod, and the preset trajectory is the curve of the motion slider during its rotational motion.

4. The control assembly for the concealed handle according to claim 2 or 3, characterized in that, The boss is rounded and chamfered. When the boss and the contact of the micro switch move relative to each other, the proportion of the non-contact travel and the contact travel to the total travel is determined according to the rounded corner and the time of the total travel.

5. A method for controlling a concealed handle, characterized in that, The method is applied to a vehicle controller, the vehicle controller being installed in a vehicle, the vehicle including a plurality of concealed handles, wherein a control component for the concealed handle according to any one of claims 1-4 is installed in the concealed handle, the method comprising: Get the current state of the hidden controller; When the concealed handle is in the retracted state, if an unfolding command is received, an unfolding control signal is output to the actuator at rated power. Within a first preset time period, detect whether the micro switch exhibits a jump from open to closed. If the micro switch transitions from open to closed within a first preset time, the control signal continues to be output to the actuator at the rated power, and the micro switch is checked for transitions from closed to closed within a third preset time. The sum of the first preset time and the third preset time is the travel time of the complete stroke of the moving slider under preset low temperature and low pressure conditions. When the micro switch transitions from contact to disconnection within the third preset time, the output of the deployment control signal to the actuator is stopped after a second preset time delay from the transition time. Both the first preset time and the second preset time are less than the third preset time.

6. The method according to claim 5, characterized in that, If the microswitch transitions from open to closed within a first preset time period, the method continues to output a control signal to the actuator at rated power, and after detecting whether the microswitch transitions from closed to closed within a third preset time period, the method further includes: If the microswitch does not transition from contact to disconnection within the third preset time, the microswitch will stop outputting the deployment control signal to the actuator after the third preset time and generate switch fault information.

7. The method according to claim 5, characterized in that, The method further includes: If the micro switch does not transition from open to closed within a first preset time, the control signal is sent to the actuator at maximum power output. Within the third preset time period, detect whether the micro switch exhibits a jump from open to closed. If the micro switch does not transition from open to closed within the third preset time, the output of the unfolding control signal to the actuator will stop after the third preset time, and a handle fault alarm message will be generated. If the micro switch transitions from open to closed within a third preset time period, the rated power output control signal is switched from the moment the transition occurs, and the process returns to the step of detecting whether the micro switch transitions from closed to closed within the third preset time period.

8. The method according to claim 5, characterized in that, The method further includes: When the concealed handle is in the extended state, if a retraction command is received, a retraction control signal will be output to the actuator at rated power. Within a first preset time period, detect whether the micro switch exhibits a jump from open to closed. If the micro switch transitions from open to closed within a first preset time, the control signal is returned to the actuator at rated power, and the micro switch is checked for transitions from closed to closed within a third preset time. When the micro switch transitions from contact to disconnection within the third preset time, the output of the control signal to the actuator is stopped and retracted after a second preset time delay from the transition time.

9. The method according to claim 8, characterized in that, If the microswitch transitions from open to closed within a first preset time, the method continues to output the control signal back to the actuator at rated power. After detecting whether the microswitch transitions from closed to open within the third preset time, the method further includes: If the micro switch does not transition from contact to disconnection within the third preset time, the output of the control signal to the actuator will stop after the third preset time, and a switch fault information will be generated.

10. The method according to claim 8, characterized in that, The method further includes: If the micro switch does not transition from open to closed within the first preset time, it continues to output the control signal back to the actuator at the rated power, and stops outputting the control signal back to the actuator after the third preset time, while generating switch fault information.

11. The method according to claim 5, characterized in that, The first preset time is determined through the following steps: The contact time threshold between the micro switch contact and the boss is calculated based on the product of the non-contact travel ratio and the first target travel time. The non-contact travel ratio is the proportion of the non-contact travel of the boss and the micro switch contact at the beginning of the travel to the full travel. The first target travel time is the time it takes for the moving slider to complete the full travel under preset low temperature and low pressure conditions. The duration of continuous contact between the microswitch contact and the boss is calculated based on the product between the touch state travel ratio and the first target travel time, and the disconnection time threshold is determined based on the sum of the duration and the touch time threshold. The first preset time is determined based on the condition that the first preset time is greater than the touch time threshold and less than the disconnection time threshold.

12. The method according to claim 5, characterized in that, The second preset time is determined through the following steps: The first arrival time threshold for the handle to be fully in place is calculated based on the product between the non-touch state travel ratio and the first target travel time. The non-touch state travel ratio is the proportion of the non-touch state travel of the boss and micro switch contacts at the end of the travel to the full travel. The first target travel time is the time for the moving slider to move the full travel under preset low temperature and low pressure conditions. Based on the product of the non-touch state stroke ratio and the second target stroke time, the second positioning time threshold for the handle to be fully positioned is calculated. The second target stroke time is the time for the motion slider to complete the full stroke under preset high temperature and high pressure conditions. Obtain the motor stall time threshold of the actuator; The second preset time is determined based on the condition that the time difference is not greater than the motor stall time threshold and the condition that the second preset time is greater than the first arrival time threshold. The time difference is the difference between the second preset time and the second arrival time threshold.

13. A concealed handle, characterized in that, include: The base, handle body, handle torsion spring, handle pivot, cable rocker arm, and control assembly of the concealed handle provided in any one of claims 1-4; The handle body is mounted on the base via the handle pivot, the handle torsion spring is sleeved on the handle pivot, and the cable rocker arm is mounted on the base and close to the handle body; When the motion slider moves in response to the unfolding command, the motion slider pushes the handle body against the force of the handle torsion spring, causing the handle body to unfold outward through the handle pivot until the handle body and the cable rocker arm come into contact. When the motion slider moves in response to the retraction command, the motion slider releases the force pushing the handle body, so as to twist the handle body inward by the elastic force of the handle torsion spring.

14. A vehicle, characterized in that, The vehicle includes a vehicle controller and a vehicle body, wherein a concealed handle as provided in claim 13 is installed on the door of the vehicle body, and the vehicle controller is used to execute the method provided in any one of claims 5-12 to control the concealed handle.

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