Precise locking mechanism, control method and vehicle

Abstract

The invention discloses a precise locking mechanism, a control method and a vehicle. Locking units in a sliding rail mechanism are configured to be capable of relatively moving in the movable direction of the sliding rail mechanism, and at least one locking station enabling the locking units to be matched with one another to form a locking structure exists in the moving stroke; the locking stations are monitored in the relative movement process between the locking units, and the movement and / or locking state between the locking units can be controlled according to the monitoring result. According to the scheme, the running state between the locking units in the sliding rail machine is monitored and fed back, then the moving or locking state between the locking units is controlled and adjusted through the controller, impact or reassembly generated in the moving and locking process of the sliding rail machine can be greatly avoided, and the running stability and reliability of the sliding rail mechanism are greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile manufacturing, and in particular to a precision locking mechanism for automobile parts, a control method and a vehicle. Background Art

[0002] Currently in MPV and SUV cars, in order to improve passenger comfort, large space and quietness in the future, the electric long slide device effectively solves the problem of long-distance sliding of seats. The electric long slide is generally composed of a travel motor and a locking motor. When the forward / backward button of the seat is pressed, the locking motor executes the unlocking command. After unlocking, the travel motor executes the forward and backward movement command. When the ideal position is reached, release the seat button, the travel motor slows down, and the locking motor prepares for locking.

[0003] This type of moving parts is generally operated by two or more motors. The unlocking motor is responsible for unlocking and locking, and the traveling motor is responsible for moving. During the locking process, the collision and friction of the structure are more obvious. At the same time, it is very important for the safety of the passengers on the seats that the left and right rail locking mechanisms can accurately enter the locking holes.

[0004] It can be seen that how to improve the operating stability of the existing electric long slide rail device is a problem that needs to be solved in the art. Summary of the invention

[0005] In view of the problems existing in the movement and locking process of the existing electric long slide rail device, the purpose of this scheme is to provide a precision locking mechanism, which can effectively improve the stability and reliability of the operation of the electric long slide rail device; on this basis, a precision locking method is also given, which effectively overcomes the problems existing in the prior art.

[0006] In order to achieve the above-mentioned object, the present invention provides a precision locking mechanism, which includes a sensor unit, a first locking unit, a second locking unit, a driving unit and a control unit, wherein the first locking unit and the second locking unit are configured to form a locking structure, and the first locking unit and the second locking unit are further configured to be able to move relative to each other along the movable direction of the slide rail mechanism, and there is at least one locking position in the moving stroke that enables the first locking portion on the first locking unit and the second locking portion on the second locking unit to cooperate with each other to form a locking structure;

[0007] The sensor unit is configured to monitor the relative movement state between the first locking unit and the second locking unit in real time, and is used to determine whether the first locking unit and the second locking unit are in a lockable position;

[0008] The driving unit is configured to be drivingly connected to the first locking unit and / or the second locking unit, and is configured to be able to drive the first locking unit and the second locking unit to move relative to each other along the movable direction of the slide rail mechanism; at the same time, when the driving unit moves between the first locking unit and the second locking unit to a lockable position, it can also drive the first locking unit and the second locking unit to perform a locking action to form a locking structure;

[0009] The control unit is configured to control the connection between the sensor unit and the drive unit, and is configured to control the working state of the drive unit, thereby controlling the relative movement, locking and unlocking actions between the first locking unit and the second locking unit.

[0010] Further, the sensor unit is configured to be able to move synchronously with the first locking unit or the second locking unit which is arranged to move.

[0011] Furthermore, the control unit is also configured to control the process state of stopping the relative movement between the first locking unit and the second locking unit and performing the locking action according to the relative movement state between the first locking unit and the second locking unit acquired by the sensor unit.

[0012] Furthermore, the control unit is also configured to control the driving unit to gradually adjust from a working state to a stopping state by constructing a buffer control mechanism.

[0013] Furthermore, when the buffer control mechanism in the control unit is implemented, when a trigger signal for stopping driving is received, a reasonable buffer time is calculated based on the relative movement state between the first locking unit and the second locking unit obtained by the sensor unit, and within the buffer time, the driving force of the driving unit is controlled to gradually weaken from the maximum and complete the stop operation at the corresponding lockable position.

[0014] In order to achieve the above-mentioned object, the present invention provides a method for controlling a precision lock, wherein the locking unit in the slide rail mechanism is configured to be able to move relatively along the movable direction of the slide rail mechanism, and there is at least one locking position in the moving stroke that enables the locking units to cooperate with each other to form a locking structure;

[0015] By monitoring the locking position during the relative movement between the locking units, the movement and / or locking state between the locking units can be controlled according to the monitoring result.

[0016] Furthermore, the control method controls the process state of stopping the relative movement between the locking units and performing the locking action according to the monitored locking position state during the relative movement between the locking units.

[0017] Furthermore, the control method controls the locking units to gradually adjust from a relative moving state to a stopped state by constructing a buffer control mechanism.

[0018] Furthermore, when receiving a trigger signal to stop movement, the control method calculates a reasonable buffer time based on the monitored relative movement status between the locking units, and controls the movement speed between the locking units to gradually decrease from the maximum within the buffer time and complete the stop operation at the corresponding lockable workstation.

[0019] In order to achieve the above-mentioned object, the present invention provides a vehicle including the above-mentioned precision locking mechanism.

[0020] The precision locking mechanism, control method and vehicle provided by the present invention use sensors to feedback the positional relationship of the holes corresponding to the locking structure, and then use a controller to control the locking structure to slide into the corresponding holes, thereby effectively improving the stability and reliability of the operation of the slide rail mechanism and the locking action.

[0021] At the same time, by dividing the locking pin into multiple strokes to enter the locking hole, it can be ensured that the locking structures on both sides enter the bottom of the locking groove, thereby improving the stability and reliability of the locking structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] Figure 1 This is a schematic diagram of the principle of this precision locking control solution;

[0024] Figure 2 This is a structural diagram of the fully locked state of the precision locking mechanism.

[0025] Figure 3 This is a structural diagram of the semi-locked state of the precision locking mechanism;

[0026] Figure 4 It is a front view of the overall structure of the car seat adjustment slide rail in the example of the present invention;

[0027] Figure 5 A cross-sectional view of a track in a car seat adjustment slide rail in an example of the present invention;

[0028] Figure 6 It is a cross-sectional view of the locking structure in the adjusting slide rail of the automobile seat in the example of the present invention;

[0029] Figure 7 It is a schematic diagram of the control flow of locking and unlocking the adjusting slide rail of the car seat in the example of the present invention;

[0030] Figure 8 The working principle of the driving assembly in the car seat adjustment slide rail in the example of the present invention;

[0031] Fig. 9 The output PWM waveform of the driving component in the automobile seat adjustment slide rail in the example of the present invention is shown. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below with reference to specific diagrams.

[0033] In view of the problem that the locking structure configured in the existing slide rail mechanism has obvious impact or collision during the locking process, resulting in poor overall stability of the slide rail mechanism when it moves and locks, the present invention provides a precise locking control solution, which monitors the movement and adjustment state of the slide rail mechanism and the locking action state of the locking structure, and can control the locking state of the locking mechanism according to the monitoring results, thereby achieving smooth locking of the locking mechanism, effectively avoiding impact or collision generated during the movement, adjustment or locking process of the slide rail mechanism, and ensuring the stability and reliability of the slide rail mechanism during application.

[0034] See also Figure 1 The precise locking control scheme provided by the present invention is mainly composed of a sensor unit 1 for monitoring, a first locking unit 2, a second locking unit 3, a driving unit (not shown in the figure) and a control unit (not shown in the figure), which can be applied to the slide rail mechanism to perform precise and smooth locking to lock the slide rail mechanism.

[0035] Among them, the first locking unit 2 and the second locking unit 3 in this control scheme are configured to form a locking structure. Specifically, the first locking unit 2 is provided with a first locking portion 2-1, and the second locking unit 3 is provided with a second locking portion 3-1. Here, the first locking portion 2-1 and the second locking portion 3-1 can cooperate with each other to form a locking structure between the first locking unit 2 and the second locking unit 3.

[0036] The locking form here can be determined according to actual needs. For example, it can be a locking form in which a lock pin cooperates with a lock hole, a locking form in which a lock tooth cooperates with a lock tooth, a locking form in which a lock tooth cooperates with a tooth groove, and so on.

[0037] As an example, the first locking unit 2 here is configured as a locking pin structure, which has at least one locking pin portion 2-1 as a first locking portion; and the second locking unit 3 is configured as a locking hole structure, which has a plurality of locking hole portions 3-1 as a second locking portion, and the plurality of locking hole portions 3-1 are arranged in sections according to the movable direction of the slide rail mechanism, and at the same time, the locking hole portion 3-1 can cooperate with the locking pin portion 2-1 to allow it to be inserted to form a locking structure in the movable direction of the slide rail mechanism.

[0038] On the basis of the above scheme, the first locking unit 2 and the second locking unit 3 are further configured to be able to move relative to each other along the movable direction of the slide rail mechanism, and there is at least one locking position (or locking position) in the moving stroke that enables the first locking portion 2-1 on the first locking unit 2 and the second locking portion 3-1 on the second locking unit 3 to cooperate with each other to form a locking structure. In this way, during the relative movement of the first locking unit 2 and the second locking unit 3, the state between the two changes back and forth between a lockable state and an unlocked state. Furthermore, the first locking unit 2 and the second locking unit 3 are further configured so that when they are moved to the locking position, a locking action can be performed between the two, so that the first locking portion 2-1 on the first locking unit 2 and the second locking portion 3-1 on the second locking unit 3 cooperate to form a locking structure; or when the two are in a locked state, an unlocking action can be performed so that the first locking portion 2-1 on the first locking unit 2 and the second locking portion 3-1 on the second locking unit 3 are disengaged, and the locking structure is released, so that the first locking unit 2 and the second locking unit 3 are restored to a relatively movable state.

[0039] Furthermore, in the solution of the present invention, the first locking unit 2 can be configured to be able to move relative to the second locking unit 3 along the movable direction of the slide rail mechanism under the drive of the driving unit; and at the same time, when reaching the locking position, it can perform a locking action relative to the second locking unit 3;

[0040] Alternatively, the second locking unit 3 is configured to be able to move relative to the first locking unit 2 along the movable direction of the slide rail mechanism under the drive of the driving unit; and at the same time, when reaching the locking position, it can perform a locking action relative to the first locking unit 2.

[0041] On the basis of the aforementioned example scheme, it is preferred here that the first locking unit 2 is configured to be able to move relative to the second locking unit 3 along the movable direction of the slide rail mechanism, and can, under the drive of the driving unit, cooperate with the slide rail mechanism to move relative to the second locking unit 3 along the movable direction of the slide rail mechanism; at the same time, when moving to any locking position, it can perform a locking action relative to the second locking unit 3 to form a locking structure between the two.

[0042] As a further example, based on the aforementioned example scheme, the first locking unit 2 having a locking pin portion 2-1 is movably arranged relative to the second locking unit 3 having a plurality of locking hole portions 3-1. The first locking unit 2 is configured to be able to be driven by a driving unit and move relative to the second locking unit 3 along the movable direction of the slide rail mechanism, that is, to drive the locking pin portion 2-1 thereon to move back and forth relative to the plurality of locking hole portions 3-1 on the second locking unit 3, so that the first locking unit 2 can move back and forth between different locking positions relative to the second locking unit 3. Furthermore, when the first locking unit 2 moves to a certain lockable position, the locking pin portion 2-1 on the first locking unit 2 is exactly opposite to the corresponding locking hole portion 3-1 on the second locking unit 3. At this time, under the further drive of the driving unit, the first locking unit 2 moves toward the second locking unit 3, so that the locking pin portion 2-1 thereon is inserted into the locking hole portion 3-1 on the second locking unit 3, completing the locking action and forming a locking structure between the two; for the first locking unit 2 and the second locking unit 3 in the locked state, the first locking unit 2 can be moved back to the second locking unit 3 under the reverse drive of the driving unit, so that the locking pin portion 2-1 thereon is disengaged from the locking hole portion 3-1 on the second locking unit 3, releasing the locking structure formed between the first locking unit 2 and the second locking unit 3, and completing the unlocking action.

[0043] Based on the above scheme, in this control scheme, the sensor unit 1 is configured to monitor the relative movement state between the first locking unit 2 and the second locking unit 3 in real time, so as to determine whether the first locking unit 2 and the second locking unit 3 are in a lockable position, thereby accurately controlling the relative movement state between the first locking unit 2 and the second locking unit 3.

[0044] As a further explanation, the sensor unit 1 here is preferably configured to be able to move synchronously with the movable locking unit, so as to achieve real-time and accurate monitoring of the relative movement state between the first locking unit 2 and the second locking unit 3.

[0045] As a further example, based on the above example solution, the sensor unit 1 here can be arranged on the first locking unit 2 which is movably arranged relative to the second locking unit 3, and the detection direction corresponds to the second locking unit 3. In this way, when the first locking unit 2 moves relative to the second locking unit 3, the sensor unit 1 can move synchronously with the first locking unit 2 and monitor the movement state relative to the second locking unit 3.

[0046] In order to accurately monitor the movement state of the first locking unit 2 relative to the second locking unit 3, when the sensor unit 1 is set on the first locking unit 2, the distribution position relationship between the sensor unit 1 and the first locking portion 2-1 on the first locking unit 2 is configured to correspond to the distribution position relationship between the second locking portions 3-1 on the second locking unit 3, so that when the sensor unit 1 detects the corresponding second locking portion 3-1 on the second locking unit 3 (i.e., any second locking portion on the second locking unit 3), the first locking portion 2-1 on the first locking unit 2 also synchronously corresponds to A corresponding second locking part 3-1 on the second locking unit 3, that is, the first locking unit 2 and the second locking unit 3 are in a lockable position, and the two are in a lockable state; at the same time, when the sensor unit 1 does not detect the corresponding second locking part 3-1 on the second locking unit 3 (that is, any second locking part on the second locking unit 3), the first locking part 2-1 on the first locking unit 2 does not correspond to any second locking part 3-1 on the second locking unit 3, that is, the first locking unit 2 and the second locking unit 3 are in an unlockable position, and both are in an unlockable state.

[0047] As an alternative, it can also be configured that when the sensor unit 1 set on the first locking unit 2 does not detect the corresponding second locking part 3-1 on the second locking unit 3 (that is, any second locking part on the second locking unit 3), the first locking unit 2 and the second locking unit 3 are in a lockable position; when the corresponding second locking part 3-1 on the second locking unit 3 (that is, any second locking part on the second locking unit 3) is detected, the first locking unit 2 and the second locking unit 3 are in an unlockable position.

[0048] As a further example, based on the aforementioned example scheme, the sensor unit 1 here is arranged on the first locking unit 2 and the sensing direction corresponds to the second locking unit 3; the distribution position relationship between the sensor unit 1 and the locking pin portion 2-1 on the first locking unit 2 corresponds to the distribution position relationship between the locking hole portion 3-1 on the second locking unit 3, so that when the sensor unit 1 detects the corresponding locking hole portion 3-1 on the second locking unit 3 (that is, any one of the locking hole portions 3-1 on the second locking unit 3) during the synchronous movement with the first locking unit 2, the locking pin portion 2-1 on the first locking unit 2 also happens to synchronously correspond to a corresponding locking hole portion 3-1 on the second locking unit 3, that is, the first locking unit 2 and the second locking unit 3 are exactly in a lockable position; at this time, the first locking unit 2 can perform a locking action (such as moving toward the second locking unit 3) so that the locking pin portion 2-1 thereon is inserted into the corresponding locking hole portion 3-1 on the second locking unit 3 to form a locking structure, such as Figure 2 and Figure 3As shown; at the same time, when the corresponding locking hole portion 3-1 on the second locking unit 3 (i.e., any locking hole portion 3-1 on the second locking unit 3) is not detected, the locking pin portion 2-1 on the first locking unit 2 will not correspond to any locking hole portion 3-1 on the second locking unit 3, that is, the first locking unit 2 and the second locking unit 3 are in a non-lockable position. At this time, even if the first locking unit 2 passes the locking action, the locking pin portion 2-1 thereon will not be able to be inserted into the corresponding locking hole portion 3-1 on the second locking unit 3.

[0049] In order to accurately monitor (or detect) the lock hole portion 3-1 on the second locking unit 3 during the movement of the first locking unit 2 relative to the second locking unit 3, the sensor unit 1 here adopts a light-sensing sensor, wherein the transmitting end of the light-sensing sensor will be set on the first locking unit 2, and can move synchronously with the first locking unit 2, and can also generate a detection beam facing the second locking unit during the movement. The detection orientation formed by the detection beam on the second locking unit corresponds to the distribution orientation of the lock hole portion 3-1 on the second locking unit. The receiving end of the light-sensing sensor is correspondingly set in the lock hole portion 3-1 on the second locking unit 3 or correspondingly set behind the lock hole portion 3-1 on the second locking unit 3. With the sensor unit 1 thus configured, when the first locking unit 2 moves relative to the second locking unit 3, the emitting end of the sensor unit 1 arranged on the first locking unit 2 will move synchronously with the first locking unit 2 and keep emitting a detection beam facing the second locking unit 3, and the emitted detection beam will also move synchronously with the first locking unit 2 and keep emitting a detection beam toward the second locking unit 3 during the movement; when the detection beam irradiates a certain locking hole portion 3-1 on the second locking unit 3 during the movement, the detection beam will directly irradiate the locking hole portion 3-1 located in the locking hole portion 3-1. The light-sensitive receiving end or the light-sensitive receiving end located behind the lock hole part 3-1 is irradiated through the lock hole part 3-1. At this time, the light-sensitive receiving end will generate a sensing signal, and it can be determined based on this signal that the first locking unit 2 is in a lockable position relative to the second locking unit 3; when the detection light beam is irradiated to the non-lock hole part 3-1 on the second locking unit 3 during the movement, the light-sensitive receiving end located in or behind the lock hole part 3-1 will not receive the detection light beam and will not generate a sensing signal, and it can be determined based on this that the first locking unit 2 is in a non-lockable position relative to the second locking unit 3.

[0050] It should be noted here that the monitoring coordination scheme between the sensor unit 1 and the first locking unit 2 and the second locking unit 3 is not limited to the above-mentioned light sensing coordination scheme, and other feasible schemes can also be adopted.

[0051] On the basis of the above scheme, the driving unit in this control scheme is arranged to be drivingly connected to the first locking unit 2 and / or the second locking unit 3, and is configured to be able to drive the first locking unit 2 and the second locking unit 3 to move relative to each other along the movable direction of the slide rail mechanism; at the same time, when the driving unit moves to a lockable position between the first locking unit 2 and the second locking unit 3, it can also drive the first locking unit 2 and the second locking unit 3 to perform a locking action to form a locking structure; furthermore, when the driving unit is in a locked state between the first locking unit 2 and the second locking unit 3, it can also drive the first locking unit 2 and the second locking unit 3 to perform an unlocking action, release the locking structure, and restore to a relatively movable state.

[0052] As a further explanation, the driving unit in this control scheme can be composed of a corresponding driving motor and a transmission assembly.

[0053] As an example, the drive unit can be composed of two groups of drive motors and transmission components, one group of drive motors cooperates with the transmission component to drive the relative movement between the first locking unit 2 and the second locking unit 3; the other group of drive motors cooperates with the transmission component to drive the first locking unit 2 and the second locking unit 3 to perform locking and unlocking actions.

[0054] As an example, the driving unit may also be composed of a set of driving motors and transmission components, thereby driving the first locking unit 2 and the second locking unit 3 to move relative to each other, lock, and unlock.

[0055] The specific structure of the drive motor and transmission assembly is not limited here and can be determined according to actual needs.

[0056] On the basis of the above scheme, the control unit in this control scheme serves as the control center of the whole scheme, which is configured to control the connection between the sensor unit 1 and the drive unit, and is configured to be able to control the working state of the drive unit, thereby realizing the control of the relative movement, locking and unlocking actions between the first locking unit 2 and the second locking unit 3. Further, the control unit is also configured to be able to accurately control the process state of stopping the relative movement and performing the locking action between the first locking unit 2 and the second locking unit 3 according to the relative movement state between the first locking unit 2 and the second locking unit 3 obtained by the sensor unit 1, so as to avoid impact or collision during the process of stopping and locking between the first locking unit 2 and the second locking unit 3, and ensure the stability and reliability of the locking process.

[0057] As a further explanation, the control unit here is configured to be able to trigger the control mechanism by an external control signal; for example, the corresponding control mechanism can be triggered according to the signal generated by the control button or the sensor signal, and a corresponding control signal can be formed to control the drive unit to start, shut down, or adjust the working state. The control unit can also be configured to automatically trigger the control mechanism according to a set control program; for example, the control mechanism is automatically started according to the set program, and a corresponding control signal is formed to control the drive unit to start, shut down, or adjust the working state.

[0058] As a further explanation, in order to avoid the problem of impact generated when the driving unit drives the first locking unit 2 and the second locking unit 3 to stop relative movement, the control unit here is configured to control the driving unit to gradually adjust from a working state to a stopped state by constructing a buffer control mechanism, and then drive the first locking unit 2 and the second locking unit 3 to smoothly stop relative movement, thereby avoiding the problem of impact generated by the existing control scheme and causing instability.

[0059] Specifically, when the buffer control mechanism in the control unit is implemented, upon receiving the trigger signal for stopping driving, it does not immediately generate a stop control signal to control the drive unit to stop driving, but calculates a reasonable buffer time according to the relative movement state between the first locking unit 2 and the second locking unit 3 acquired by the sensor unit 1, and controls the driving force of the drive unit to gradually weaken from the maximum within the buffer time and complete the stop operation at the corresponding lockable position, so that the first locking unit 2 and the second locking unit 3 are driven to smoothly transition from the relative movement state to stop, and stop at the lockable position;

[0060] On this basis, when the driving unit controls the first locking unit 2 and the second locking unit 3 to smoothly stop at the lockable position from relative movement, the control unit further controls the driving unit to drive the first locking unit 2 and the second locking unit 3 to perform a locking action at the lockable position, so that a locked state is formed between the two.

[0061] In addition, when calculating the buffer time, the buffer control mechanism in the control unit obtains the relative movement state between the first locking unit 2 and the second locking unit 3 monitored by the current sensor unit 1 after receiving the trigger signal to stop driving, such as whether they are just in a lockable position state or in a non-lockable position state; then, based on a preset reasonable buffer stroke (such as continuing to move forward 1-3 lockable positions based on the current moving direction) combined with the current relative position state between the first locking unit 2 and the second locking unit 3, the final buffer stroke is determined; finally, the buffer time is calculated based on the determined final buffer stroke.

[0062] On this basis, the change coefficient of the driving force of the driving unit gradually weakened during the buffer time can be further calculated based on the calculated buffer time.

[0063] In addition, when the control unit controls the driving unit to drive the first locking unit 2 and the second locking unit 3 to perform a locking action, a locking action stroke or a calibration locking action stroke of multiple times is adopted. Preferably, the locking state is calibrated by cooperating with the forward drive and the reverse drive to ensure the reliability of the locking structure formed between the first locking unit 2 and the second locking unit 3.

[0064] Specifically, when the control unit controls the driving unit to drive the first locking unit 2 and the second locking unit 3 to perform a locking action, the control unit first drives the first locking unit 2 and the second locking unit 3 to perform a positive locking action until the locking stroke between the first locking unit 2 and the second locking unit 3 ends (such as the driving motor is blocked); Figure 2 As shown, the locking pin portion 2-1 on the first locking unit 2 is completely inserted into the locking hole portion 3-1 on the second locking unit 3, so that the locking pin portion 2-1 falls into one side end of the locking hole portion 3-1;

[0065] Then, the first locking unit 2 and the second locking unit 3 are driven to perform a reverse unlocking action until the unlocking stroke between the first locking unit 2 and the second locking unit 3 is completed; for example, the locking pin portion 2-1 on the first locking unit 2 is completely disengaged from the locking hole portion 3-1 on the second locking unit 3, so that the locking pin portion 2-1 runs in the reverse direction to fall into the other side end of the locking hole portion 3-1;

[0066] Then, the first locking unit 2 and the second locking unit 3 are driven to perform a positive locking action again until the locking stroke between the first locking unit 2 and the second locking unit 3 is completed;

[0067] Finally, the first locking unit 2 and the second locking unit 3 are driven to perform a reverse unlocking action for a short distance, so that a locked state is formed between the first locking unit 2 and the second locking unit 3; Figure 3 As shown, the locking pin portion 2-1 on the first locking unit 2 is completely inserted into the locking hole portion 3-1 on the second locking unit 3, and then moves in the opposite direction to the other side end of the locking hole portion 3-1 for a short distance, and then stops in the middle of the locking hole portion 3-1 to achieve a stable locking state.

[0068] Here, through two maximum stroke locking actions and a maximum stroke reverse unlocking action in the middle, the matching state between the locking parts on the first locking unit 2 and the second locking unit 3 is effectively calibrated to ensure that the two are in an accurate lockable matching state, thereby ensuring that a stable and reliable locking state is formed between the first locking unit 2 and the second locking unit 3.

[0069] It should be noted that the specific calibration rules are not limited here and can be determined according to actual conditions. As an example, the calibration rules can be constructed based on the length of the corresponding action stroke. It can be understood that any calibration rules that can cooperate with the above-mentioned locking and unlocking actions can be used here.

[0070] The solution of the present invention is calibrated during the locking stage so that a locking structure can be accurately formed between the first locking unit 2 and the second locking unit 3, thereby ensuring the stability of the travel locking state between the two locking units, and avoiding the first locking unit 2 and the second locking unit 3 not being properly locked in place, resulting in an unreliable travel locking state between the two locking units, and causing collision problems in the slide rail mechanism during application.

[0071] With respect to the precise locking control scheme provided by the present invention, the application process and corresponding technical features are further explained below through specific application examples.

[0072] In this example, the adjustment slide rail of a car seat is taken as an example to illustrate the application process of the precise locking control solution provided by the present invention.

[0073] See also Figure 4 The automobile seat adjustment slide rail given in this example mainly includes a controller, a running mechanism, a sensor component and a locking mechanism.

[0074] The walking mechanism here is used to connect and cooperate with the car seat, and can drive the car seat to adjust the position; the sensor component and the locking mechanism are arranged on the walking mechanism to monitor and lock the walking state of the walking mechanism; the controller controls the connection between the walking mechanism, the sensor mechanism and the locking mechanism, and can coordinate the cooperation between the walking mechanism and the locking mechanism based on the monitoring data of the sensor mechanism, so as to realize smooth adjustment and precise locking of the car seat.

[0075] Specifically, the walking mechanism here includes a first driving assembly 200, a track assembly 100 and a transmission assembly 400. The first driving assembly can drive the transmission assembly to drive the locking mechanism to walk in the track assembly.

[0076] See also Figure 4 In this example, in order to ensure stable and reliable adjustment of the car seat, the track assembly 100 adopts a double track setting, specifically including a first track 110 and a second track 120. The first track 110 and the second track 120 are arranged opposite to each other to form a stable double track structure.

[0077] Furthermore, the first rail 110 and the second rail 120 in the rail assembly 100 are respectively provided with a first rail groove and a second rail groove, and a rack 140 is provided at the bottom of the first rail groove and the second rail groove along the extension direction of the rail groove, which is used to cooperate with the transmission assembly. The transmission assembly is engaged with the rack 140 in the first rail groove and the second rail groove, and the transmission assembly can drive the locking mechanism to move in the first rail groove and the second rail groove.

[0078] Furthermore, for the first track 110 and the second track 120, corresponding movable shells 300 are respectively provided in both, and each movable shell 300 can be movably arranged in the corresponding track 100 or 200 for connecting and carrying the car seat, so as to drive the car seat to slide along the track.

[0079] The specific structure of the movable housing 300 is not limited here, and can be determined according to actual needs, as long as the structure is stable and reliable.

[0080] See also Figure 5 On this basis, this example further configures a corresponding transmission assembly 400 in the mobile housing 300 set in the first track 110 and the second track 120. The transmission assembly 400 can cooperate with the rack 140 in the track and the first driving assembly 200. Under the drive of the first driving assembly 200, it can cooperate with the rack 140 in the track to drive the mobile housing 300 to move along the track.

[0081] The transmission assembly 400 specifically includes a first gear 410 and a second gear 420, wherein the first gear 410 and the second gear 420 are rotatably disposed in the movable housing 300, wherein the first gear 410 is respectively meshed with the second gear 420, and is also synchronously meshed with the rack 140 in the track; the second gear 420 is configured to cooperate with the first driving assembly 200, and can be driven by the first driving assembly 200 to rotate synchronously, thereby driving the first gear 410 to rotate synchronously, and then the first gear 410 cooperates with the rack 140 in the track to drive the housing to move along the track.

[0082] The first driving assembly 200 serves as a power assembly in the entire walking mechanism, and is used to drive the transmission assembly 400 in the first track 110 and the second track 120 to move.

[0083] In view of the structural characteristics of the double track setting of the first track 110 and the second track 120 in this example, in order to ensure that the transmission components 400 in the first track 110 and the second track 120 can be driven to perform synchronous actions. The first driving component 200 in this example is specifically composed of a first power component 210 and a first transmission rod 220. The first transmission rod 220 here is configured so that both ends are respectively inserted into the mobile shell 300 in the first track 110 and the second track 120, and are respectively connected to the second gear 420 in the transmission component 400 in the mobile shell 300, and can drive the second gear 420 to rotate synchronously in the mobile shell 300 by rotating around its own axis. Figure 5 As shown; in conjunction with it, the first power assembly 210 is configured to drive the first transmission rod 220 and is controlled by the controller, can work under the control of the controller, and drive the first transmission rod 220 to rotate around the axis.

[0084] The specific structure of the first power assembly 210 is not limited here. For example, a DC brush motor, a DC brushless motor, and a stepper motor can be used to achieve precise movement by increasing the number of Hall pulses. Such a first power assembly 210 can enable the transmission assembly to drive the moving housing 300 to move precisely within the corresponding track.

[0085] In order to ensure the reliability of the cooperation between the first power component 210 and the first transmission rod 220, a placement shell 230 is provided here for placing the first power component 210, and at the same time, the first transmission rod 220 is passed through the placement shell 230 and connected with the first power component 210.

[0086] The first driving assembly 200 is configured in this way, wherein the first power assembly 210 can drive the first transmission rod 220 to rotate around the axis according to the control of the controller. The first transmission rod 220 can drive the second gears 420 connected at both ends to rotate synchronously in their respective mobile shells 300 through self-rotation, so that the transmission assemblies 400 in the mobile shells 300 in the first track 110 and the second track 120 move synchronously, and then drive the mobile shells 300 in the first track 110 and the second track 120 to move synchronously along the tracks; since the transmission assembly structures arranged in the mobile shells 300 in the first track 110 and the second track 120 are the same, this ensures that the speeds of the synchronous movement of the mobile shells 300 in the first track 110 and the second track 120 are the same.

[0087] See also Figures 4 to 6 In order to cooperate with the above-mentioned walking mechanism, the locking mechanism 500 in this example is arranged to cooperate with the moving housing 300 in the corresponding walking mechanism, and is configured to form a corresponding locking structure on the track between the moving housings 300.

[0088] Specifically, in this example, a first side wall of the first track groove in the first track 110 is provided with a plurality of locking holes 130, and the plurality of locking holes 130 are located on the same horizontal line and are equidistantly distributed on the first track 110; at the same time, a first side wall of the second track groove in the second track 120 is also provided with a plurality of locking holes 130 corresponding to the first track groove, and the positions and quantities correspond to those of the first track 110.

[0089] Therefore, based on the locking holes 130 distributed in the first rail 110 and the second rail 120 , second locking units in the matching locking mechanism 500 are formed in the first rail 110 and the second rail 120 , respectively.

[0090] On this basis, this example further provides corresponding locking pins 510 and elastic components 520 in the moving housings 300 in the first track 110 and the second track 120 , respectively, thereby forming a first locking unit in the locking mechanism 500 .

[0091] Among them, the locking pin 510 is arranged in the built-in cavity of the moving shell 300, and its locking end can extend from the moving shell 300 into the track groove of the track, and the locking pin 510 can follow the moving shell 300 to move in the track relative to the locking hole 130 on the side wall of the track groove; furthermore, the locking pin 510 is also configured to be able to move in the built-in cavity of the moving shell 300 facing the locking hole 130 on the side wall of the track groove, and to enable its locking end to be inserted into the corresponding locking hole 130 on the side wall of the track groove to form a locking structure, thereby forming a locking structure between the moving shell 300 and the corresponding track.

[0092] Specifically, the locking pin 510 is placed in the built-in cavity of the movable shell 300 through the corresponding guide shell. The locking pin 510 is movably arranged in the guide shell, and its locking end can extend into the track groove of the track. Based on the guide limit of the guide shell, when the locking pin 510 moves in the guide shell, it can only drive its locking end to move back and forth relative to the locking hole 130 on the side wall of the track groove.

[0093] Furthermore, the elastic component 520 is arranged on the movable housing 300 corresponding to the locking pin 510, and is configured to form a continuous elastic driving force on the locking pin 510 facing the locking hole 130 of the side wall of the track groove, so that the locking pin 510 is driven by the elastic driving force of the elastic component 520 to move the locking hole 130 facing the side wall of the track groove in the absence of other external forces until its locking end is inserted into the corresponding locking hole 130 on the side wall of the track groove.

[0094] Specifically, the elastic component 520 here is composed of two groups of springs, which are distributed on both sides of the locking pin 510 and are arranged inside the guide shell. One end of the two groups of springs is connected to the locking pin 510, and the other end is connected to the guide shell, and is configured to be in a stretched state, so that the elastic component 520 continuously exerts an elastic pulling force on the locking pin 510 to form a locking hole 130 facing the side wall of the track groove in a normal state, thereby forming a continuous elastic driving force on the locking pin 510 and facing the locking hole 130 on the side wall of the track groove.

[0095] On this basis, this example further sets a second driving assembly 530 between the first rail 110 and the second rail 120 to constitute a driving unit in the locking mechanism 500, which is used to drive the locking pin 510 to perform a locking action relative to the locking hole 130 in the rail (i.e., drive the locking pin 510 to move toward the locking hole 130 in the rail) to form a locking structure or perform an unlocking action (i.e., drive the locking pin 510 to move away from the locking hole 130 in the rail) to release the locking structure.

[0096] In view of the structural characteristics of the double track arrangement of the first track 110 and the second track 120 in this example, in order to ensure that the locking pins 510 in the first track 110 and the second track 120 can be driven to move synchronously, the second drive assembly 530 here is specifically composed of a second power assembly 531, a second transmission rod 532 and a rocker rod 533.

[0097] The second transmission rod 532 is configured to have two ends respectively penetrated in the first track 110 and the second track 120 in the mobile housing 300, and are respectively provided with corresponding swing rods 533, which cooperate with the locking pin 510 in the mobile housing 300 through the swing rods 533. The swing rod 533 is arranged to cooperate with the locking pin 510, and can swing relative to the locking pin 510 under the drive of the second transmission rod 532, and then can drive the locking pin 510 to move accordingly in the mobile housing 300.

[0098] The second transmission rod 532 configured in this way can drive the swing rods 533 at both ends to swing relative to the corresponding locking pins 510 by rotating around its own axis, and then drive the locking pins 510 to move in the movable housing 300 to achieve a locking action or an unlocking action.

[0099] In coordination therewith, the second power assembly 531 here is configured to drive and connect the second transmission rod 532 and is controlled by a controller, and can work under the control of the controller and drive the second transmission rod 532 to rotate around the axis.

[0100] The specific structure of the second power assembly 531 is not limited here. For example, a DC brush motor, a DC brushless motor, and a stepper motor can be used to achieve precise movement by increasing the number of Hall pulses. Such a second power assembly 531 can drive the locking pin 510 to lock or unlock accurately.

[0101] The second driving assembly 530 is configured in this way, wherein the second power assembly 531 can drive the second transmission rod 532 to rotate around the axis according to the control of the controller. The second transmission rod 532 can drive the swing rods 533 at both ends to swing synchronously relative to the locking pin 510 in their respective moving housings 300 through the rotation, thereby driving the locking pin 510:

[0102] (1) When the swing rod 533 swings in a first direction (e.g., clockwise) relative to the locking pin 510, it can be separated from the locking pin 510. At this time, the locking pin 510 can move toward the locking hole 130 in the track under the elastic tension of the elastic component 520 until the locking end of the locking pin 510 is inserted into the corresponding locking hole 130 in the track, thereby achieving the engagement and locking of the locking pin 510 and the locking hole 130;

[0103] (2) When the swing rod 533 swings in the second direction (e.g., counterclockwise) relative to the locking pin 510, the swing rod 533 presses against the locking pin 510, thereby generating a driving force for the locking pin 510 to move away from the locking hole 130 in the track. Under the action of the driving force, the locking pin 510 can overcome the elastic tension of the elastic component 520, and then move away from the locking hole 130 in the track, so that the locking end of the locking pin 510 can be disengaged from the corresponding locking hole 130 in the track, thereby releasing the locking structure between the two and achieving unlocking. After being disengaged from the locking hole 130, the locking pin 510 can move in the track.

[0104] On this basis, this example further disposes corresponding sensor mechanisms 600 in the moving housing 300 in the first track 110 and the second track 120 to form a sensor unit in the locking mechanism 500 .

[0105] Specifically, the sensing mechanism 600 here is specifically composed of a light sensing sensor component arranged inside the moving housing 300, and can form a corresponding sensing area in the track groove of the track corresponding to the path where the locking holes 130 are distributed.

[0106] Here, the specific structure of the optical sensor assembly and the mechanism of sensing the locking hole 130 are as described above, and will not be repeated here. In this way, the movement state of the corresponding moving housing 300 in the first track 110 and the second track 120 can be accurately detected by the sensor mechanism 600.

[0107] It should be noted here that the shape of the locking hole 130 in this solution is not limited. For example, it can be a round hole, a square hole or a trapezoidal hole, all of which are equally applicable to this solution.

[0108] At the same time, the above example is a locking hole 130, and the locking pin 510 returns horizontally relative to the locking hole 130. The present solution is not limited to the use of the locking hole 130, and a locking groove may also be used. The locking pin 510 returns vertically relative to the locking groove. The working process of the locking groove structure is consistent with the above-mentioned locking hole 130, and will not be described in detail here.

[0109] On this basis, the controller in this example is configured to control the connection sensing mechanism 600, the first power assembly 210 in the first drive assembly 200, and the second power assembly 531 in the second drive assembly 530, and can control the working states of the first power assembly 210 and the second power assembly 531 based on the moving state of the movable shell 300 in the first track 110 and the second track 120 detected by the sensing mechanism 600, thereby achieving smooth adjustment and precise locking of the car seat.

[0110] The specific structure of the controller is not limited here and can be determined according to actual needs. For example, the seat adjustment controller in the existing vehicle can be used to form the controller.

[0111] The following further describes the process of implementing smooth adjustment and locking of the car seat adjustment rail solution in this example.

[0112] See also Figure 7 In this example, when the car seat adjustment rail solution is running, the specific implementation process is as follows:

[0113] When the seat Start button (forward / reverse button) is pressed, first determine whether the current position of the seat is at the end position (mechanical stops at both ends). If the mechanical stop is consistent with the direction of movement, the unlocking action is not performed (to prevent the motor from being directly blocked), and the process ends directly; if the mechanical stop is opposite to the direction of movement, the motor is unlocked.

[0114] Unlocking process:

[0115] First, after receiving the unlocking command, the controller controls the second power assembly 531 (locking drive motor) in the second drive assembly 530 to drive the second transmission rod 532 to drive the swing rod 533 to rotate in the first direction, and the swing rod 533 overcomes the elastic tension of the elastic assembly 520 to drive the locking pin 510 to move away from the locking hole 130 (such as Figure 5 As shown, it moves downward), at which time the locking pin 510 disengages from the locking hole 130.

[0116] Locking process:

[0117] When the seat Start button (forward / reverse button) is pressed, see Figure 8 and Fig. 9 The first power component 210 (i.e., the mobile drive motor) in the first drive component 200 rotates forward / backward, performs proportional integration and differentiation according to the express closed-loop principle, increases the motor PWM ratio, reaches the rated speed, and drives the first transmission rod 220 to rotate. The rotation of the first transmission rod 220 drives the first gear 410 and the second gear 420 at both ends to rotate respectively. The first gear 410 and the second gear 420 are engaged with the rack 140 in the first track groove and the second track groove, driving the mobile housing 300 of the locking mechanism to move synchronously in the first track groove and the second track groove. By increasing the number of Hall pulses of the first drive component 200, the locking mechanism can be accurately driven to the locking position.

[0118] If the locking mechanism moves into place, when the movable shell 300 moves in the first track groove and the second track groove, the sensor 600 inside the movable shell 300 senses the position of the locking holes 130 on the first track groove and the second track groove in real time, and the sensor 600 sends an electrical signal or a switch signal after passing through the locking hole 130. At the same time, the locking pin 510 corresponding to the sensor 600 corresponds to the adjacent locking hole 130.

[0119] When the controller receives the locking instruction, the controller calculates the buffer stop time (i.e., the locking drive motor action time) according to the position of the locking hole 130 scanned by the sensor, and adjusts the first drive component 200 to decelerate accordingly. When the deceleration is completed, the controller drives the second power component 531 (locking drive motor) in the second drive component 530 according to the position information of the locking hole, driving the second transmission rod 532 to drive the rocker bar 533 to rotate in the second direction. The rocker bar 533 pulls the locking pin 510. Under the action of the elastic component 520, the locking pin 510 is pulled back to its position, and the locking pin 510 smoothly enters the locking hole 130 to be locked (the specific deceleration control and locking control implementation mechanism here are as described above and will not be repeated here).

[0120] In the above control method, the locking pin 510 directly enters the locking hole 130 in one step, and can also be divided into multiple strokes. The selection of the specific stroke can be determined according to the actual situation.

[0121] As an example, it can also be divided into multiple trips, see Figure 7-Figure 9 , the second driving assembly 530 can rotate forward, driving the swing rod 533 to swing a small distance first, controlling the locking pin 510 to pass through the locking hole and reach the first side end of the locking hole, and the second driving assembly 530 stops moving.

[0122] Then, the second drive assembly 530 is immediately driven in reverse, and the second drive assembly 530 drives the rocker arm 533 to control the locking pin 510 to run in reverse to the other side end of the locking pin 510, and then the second drive assembly 530 stops moving, and the second drive assembly 530 again drives the rocker arm 533 in reverse to control the locking pin 510 to reach the first side end of the locking hole 130, and then the second drive assembly 530 runs in reverse again, driving the rocker arm 533 to control the locking pin 510 to run a short distance toward the other side end of the locking hole 130, so that the locking pin 510 is located in the middle of the locking hole 130. This locking action can effectively solve the problem that the left and right side slide rails cannot be locked at the same time (one side is locked, and the other side is not locked), thereby effectively ensuring driving safety.

[0123] At the same time, the locking pin 510 is divided into multiple strokes to enter the locking hole 130, which can reduce the impact sound between the locking pin 510 and the locking hole 130 and improve the comfort of passengers and drivers.

[0124] If it does not move to the stop position, the first drive assembly 200 will operate, driving the movable housing 300 of the locking mechanism to continue moving until the forward / backward button is released. The driving force of the first drive assembly 200 will gradually weaken until it weakens to a given minimum driving force, and then the above-mentioned locking action will be performed.

[0125] The precision locking mechanism and control method formed by the above-mentioned scheme controls the return position of the locking structure by using a sensor to sense the correspondence between the empty slot and the locking structure hole, so that the locking structure can accurately slide into the locking hole, avoiding impact and collision during the locking process and ensuring the stability of the locking.

[0126] At the same time, by falling to the bottom of the locking groove in steps, a smooth control method is achieved, thereby avoiding impact and collision between the locking structure and the locking groove.

[0127] Secondly, since there is a set of locking structures on each side of the long slide rail, the locking holes on the left and right sides are not in a straight line due to assembly errors. In order to eliminate this error, entering the locking hole through multiple strokes can ensure that the locking structures on both sides enter the bottom of the locking groove (to ensure that the seats do not slide when the car collides), thereby ensuring the safety of the passengers.

[0128] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A precision locking mechanism, characterized in that: The invention comprises a sensor unit, a first locking unit, a second locking unit, a driving unit and a control unit, wherein the first locking unit and the second locking unit are configured to form a locking structure, the first locking unit and the second locking unit are further configured to be able to move relative to each other along the movable direction of the slide rail mechanism, and there is at least one locking position in the moving stroke so that the first locking portion on the first locking unit and the second locking portion on the second locking unit can cooperate with each other to form a locking structure; The sensor unit is configured to monitor the relative movement state between the first locking unit and the second locking unit in real time, and is used to determine whether the first locking unit and the second locking unit are in a lockable position; The driving unit is configured to be drivingly connected to the first locking unit and / or the second locking unit, and is configured to be able to drive the first locking unit and the second locking unit to move relative to each other along the movable direction of the slide rail mechanism; at the same time, when the driving unit moves between the first locking unit and the second locking unit to a lockable position, it can also drive the first locking unit and the second locking unit to perform a locking action to form a locking structure; The control unit is configured to control the connection between the sensor unit and the drive unit, and is configured to control the working state of the drive unit, thereby controlling the relative movement, locking and unlocking actions between the first locking unit and the second locking unit.

2. A precision locking mechanism according to claim 1, characterized in that: The sensor unit is configured to be able to move synchronously with the first locking unit or the second locking unit which is arranged to move.

3. A precision locking mechanism according to claim 1, characterized in that: The control unit is further configured to control the process state of stopping the relative movement between the first locking unit and the second locking unit and performing the locking action according to the relative movement state between the first locking unit and the second locking unit acquired by the sensor unit.

4. A precision locking mechanism according to claim 1, characterized in that: The control unit is further configured to control the driving unit to gradually adjust from a working state to a stopping state by constructing a buffer control mechanism.

5. A precision locking mechanism according to claim 4, characterized in that: When the buffer control mechanism in the control unit is implemented, upon receiving a trigger signal for stopping driving, a reasonable buffer time is calculated based on the relative movement state between the first locking unit and the second locking unit obtained by the sensor unit, and within the buffer time, the driving force of the driving unit is controlled to gradually weaken from the maximum and complete the stop operation at the corresponding lockable position.

6. A precision locking control method, characterized in that: The control method configures the locking units in the slide rail mechanism to be relatively movable along the movable direction of the slide rail mechanism, and there is at least one locking position in the moving stroke that enables the locking units to cooperate with each other to form a locking structure; By monitoring the locking position during the relative movement between the locking units, the movement and / or locking state between the locking units can be controlled according to the monitoring result.

7. A precision locking control method according to claim 6, characterized in that: The control method controls the process state of stopping the relative movement between the locking units and performing the locking action according to the monitored locking position state during the relative movement between the locking units.

8. A precision locking control method according to claim 7, characterized in that: The control method controls the locking units to gradually adjust from a relative moving state to a stopped state by constructing a buffer control mechanism.

9. A precision locking control method according to claim 8, characterized in that: When receiving a trigger signal for stopping movement, the control method calculates a reasonable buffer time according to the monitored relative movement state between the locking units, and controls the movement speed between the locking units to gradually decrease from the maximum within the buffer time and complete the stopping operation at the corresponding lockable workstation.

10. A vehicle, characterized in that: The invention comprises the precision locking mechanism described in any one of claims 1 to 5.

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