Child seat electric armrest adjusting control method and system and child seat

Abstract

The invention relates to the field of automobile safety supplies, and discloses a child seat electric armrest adjusting control method and system and a child seat, the child seat electric armrest adjusting control system comprises a controller, an adjusting module and a driving module which are in communication connection, and the method comprises the steps that the controller obtains required height information and homing height information of an operator through the adjusting module; judging whether a starting signal is received or not; if the starting signal is received, the driving module is controlled to drive the handrail to be adjusted to the target height corresponding to the required height information according to the required height information, obtained by the adjusting module, of the operator; judging whether a homing signal is received or not; and if the homing signal is received, the driving module is controlled to drive the handrail to the homing height value according to the homing height information of the operator acquired by the adjusting module. According to the invention, by presetting the armrest height after the child sits in advance and the return height convenient for the child to get on and off the seat or to be stored, the repeated operation in daily use is reduced, and the operation convenience and the user experience are improved.

Description

Technical Field

[0001] This invention relates to the field of automotive safety products technology, and more specifically, to a method and system for adjusting and controlling the electric armrest of a child seat, and a child seat itself. Background Technology

[0002] In the field of child seats (car seats, high chairs, and learning chairs), armrests, as core support components, have evolved from early manual buckle-type adjustments to electric ones. Manual adjustment requires adults to remove or push the buckles to fix the height, with limited settings (usually 3-5 levels) and requiring considerable effort. Electric adjustment technology mostly uses linear motors to directly raise and lower the armrests, installed on the back or bottom of the seat, and controlled by "up" / "down" dual buttons. Although it eliminates the need for manual force, it has significant limitations: no height memory function, and repeated button pressing is required for each use, making it unfriendly to young children or in rushed situations, and inconvenient to operate. Summary of the Invention

[0003] To address at least one of the aforementioned problems, the present invention first provides a method for adjusting and controlling the electric armrest of a child seat, applied to a child seat electric armrest adjustment system. The child seat electric armrest adjustment system includes a controller, an adjustment module, and a drive module that are interconnected. The method for adjusting and controlling the electric armrest of a child seat includes the following steps:

[0004] The adjustment module obtains the operator's required height and return height information.

[0005] Real-time detection of whether a start signal has been received;

[0006] If the start signal is received, the drive module is controlled to work to drive the armrest to adjust to the position corresponding to the required height information;

[0007] Real-time detection of whether a homing signal has been received;

[0008] If the return signal is received, the drive module is controlled to operate to drive the handrail to adjust to the position corresponding to the return height information.

[0009] Optionally, the step of obtaining the demand height information includes:

[0010] Determine whether the required height setting signal sent by the adjustment module has been received; if the required height setting signal has been received, determine whether the first input signal sent by the adjustment module has been received.

[0011] If so, determine whether the currently received first input signal is the first height value, the first child's height value, the first seat tilt angle value, or the first current height information input by the operator;

[0012] When the first input signal received is the first height value directly input by the operator, then the first height value is the required height information.

[0013] When the first input signal received is the first child height value input by the operator, the first child height value is converted into the corresponding height value of the first handrail according to the pre-stored child height and handrail height correspondence table. The corresponding height value of the first handrail is the required height information.

[0014] When the first input signal received is the first seat tilt angle value adjusted by the operator, the first seat tilt angle value is converted into the corresponding height value of the second armrest according to the pre-stored seat tilt angle and armrest height correspondence table. The corresponding height value of the second armrest is the required height information.

[0015] When the first input signal received is the first start information input by the operator, the drive module is controlled to drive the handrail to reciprocate up and down; it is determined whether the first stop information input by the operator is received through the adjustment module. If the first stop information is received, the drive module is controlled to drive the handrail to stop up and down and stop at the first current height, which is the required height information.

[0016] Optionally, the step of obtaining the repositioning height information includes:

[0017] Determine whether a return height setting signal sent by the adjustment module has been received; if so, determine whether a second input signal sent by the adjustment module has been received.

[0018] If so, determine whether the currently received second input signal is a factory reset confirmation signal or a second height value, a second child height value, a second seat tilt angle value, or a second current height information input by the operator;

[0019] When the received second input signal is a factory reset confirmation signal, the pre-stored factory-customized reset height value is confirmed as the reset height information.

[0020] When the received second input signal is the second height value directly input by the operator, then the second height value is the positioning height information;

[0021] When the received second input signal is the second child height value input by the operator, the second child height value is converted into the third handrail corresponding height value according to the pre-stored child height and handrail height correspondence table. The third handrail corresponding height value is the return height information.

[0022] When the received second input signal is the second seat tilt angle value adjusted by the operator, the second seat tilt angle value is converted into the corresponding height value of the fourth armrest according to the pre-stored seat tilt angle and armrest height correspondence table. The corresponding height value of the fourth armrest is the return height information.

[0023] When the received second input signal is the second start information input by the operator, the drive module is controlled to drive the handrail to reciprocate up and down; it is determined whether the second stop information input by the operator is received through the adjustment module. If the second stop information is received, the drive module is controlled to drive the handrail to stop up and down and stop at the second current height, which is the return height information.

[0024] Optionally, after receiving the start signal, the process further includes the following steps:

[0025] The system checks whether the required height information is stored; if not, it does not send the start signal to the driver module; if so, it sends the start signal to the driver module.

[0026] Optionally, the step of determining whether a start signal or a homing signal has been received includes:

[0027] Determine whether the adjustment module receives the start signal or the reset signal input by the operator through one or more of the following methods: button adjustment, touch screen adjustment, and voice adjustment.

[0028] Optionally, the child seat electric armrest adjustment system further includes a protection module communicatively connected to the controller. The protection module includes a sensor unit and an obstruction detection protection unit. The child seat electric armrest adjustment control method further includes the following steps:

[0029] The system receives the real-time height value of the handrail detected by the sensor unit; it determines whether the real-time height value is consistent with the required height information or the return height information; if so, it controls the drive module to stop driving the handrail to rise and fall.

[0030] The system receives electrical characteristic values ​​of the drive module detected by the obstruction protection unit in real time, and determines whether the electrical characteristic values ​​exceed the safe range. If so, it determines that an obstruction has been detected and sends a release signal to the drive module, controlling the drive module to drive the handrail to stop lifting and to drive the handrail in the opposite direction to release the obstruction.

[0031] Optionally, the child seat electric armrest adjustment system further includes a status feedback module that is communicatively connected to the controller, and the child seat electric armrest adjustment control method further includes the steps of: real-time monitoring of armrest movement status information and battery status information, and controlling the status feedback module to provide visual feedback, sound feedback and / or tactile feedback to the armrest movement status information and the battery status information.

[0032] Compared to existing technologies, the child seat electric armrest adjustment control method of this invention:

[0033] By receiving the user's input of desired and return-to-position height information through the controller, the armrest height can be set once and reused multiple times. Compared to the previous technology where manual pressing of a button was required for each adjustment to the desired height, this invention allows the user (parent) to preset or quickly select a suitable armrest height (desired height) for the current child, and simultaneously set a default height (return-to-position height) for easy child getting in and out of the seat or for regular storage. This significantly reduces repetitive operations in daily use, and is especially suitable for situations where there is a lot of time and effort required in childcare for young children, improving ease of operation and user experience.

[0034] Once a child is seated, the controller directly retrieves the stored required height information via a start signal and sends it to the drive module, enabling the drive module to automatically and accurately adjust the armrests to the preset height position. This process requires no manual intervention or visual estimation, saving effort and ensuring consistent and accurate height adjustment. It avoids errors or discomfort that may result from manual fine-tuning each time, and is especially beneficial for providing continuous, well-fitting support and protection for children.

[0035] When the armrest needs to return to its original position, the controller receives a return signal and drives the armrest to adjust to the desired height. This return function further optimizes the overall workflow of using the seat. With a single touch, the armrest automatically returns to the preset height (such as the lowest position or the safe storage position), accommodating diverse needs for users who dislike using armrests. It also facilitates cleaning and tidying after children leave the seat or preparing it for the next use. This overcomes the lack of intelligent reset capability in traditional electric armrests, making the product more user-friendly and practical.

[0036] In addition, the present invention provides a child seat electric armrest adjustment system, including a controller, an adjustment module, and a drive module that are interconnected.

[0037] The adjustment module is used to receive demand height information, return height information, start signal and return signal, and transmit them to the controller;

[0038] The controller is used to receive information transmitted by the adjustment module and control the drive module to work according to the information;

[0039] The drive module is used to drive the handrail to lift and adjust its height.

[0040] Optionally, it also includes a protection module and a status feedback module.

[0041] The protection module includes a sensor unit and an obstruction protection unit. The sensor unit is used to detect the real-time height value of the handrail and send it to the controller. The obstruction protection unit is used to detect the electrical characteristic value of the drive module in real time and send it to the controller.

[0042] The status feedback module is used to receive the handrail movement status information and power status information transmitted by the controller and provide visual feedback, sound feedback and / or tactile feedback.

[0043] Compared with the prior art, the electric armrest adjustment system for child seats described in this invention and the electric armrest adjustment control method for child seats described above have the same advantages over the prior art, and will not be repeated here.

[0044] In addition, the present invention provides a child seat, including the child seat electric armrest adjustment system described above.

[0045] Compared to existing technologies, the child seat described in this invention has the same advantages as the aforementioned electric armrest adjustment system for child seats, which will not be repeated here. Attached Figure Description

[0046] Figure 1 The flowchart of the child seat electric armrest adjustment control method according to an embodiment of the present invention Figure 1 ;

[0047] Figure 2 The flowchart of the child seat electric armrest adjustment control method according to an embodiment of the present invention Figure 2 ;

[0048] Figure 3 A flowchart illustrating the height requirement information for the child seat electric armrest adjustment control method according to an embodiment of the present invention;

[0049] Figure 4 This is a framework diagram of the electric armrest adjustment system for a child seat according to an embodiment of the present invention;

[0050] Figure 5 This is an exploded view of the interior of the handrail according to an embodiment of the present invention;

[0051] Figure 6 This is a connection structure diagram of the transmission component, the first bevel gear disk, the second bevel gear disk, and the connecting component according to an embodiment of the present invention.

[0052] Figure 7This is an exploded view of the transmission component, the first bevel gear disk, the second bevel gear disk, and the connecting component according to an embodiment of the present invention.

[0053] Figure 8 This is a connection structure diagram of the handrail and handrail mounting base according to an embodiment of the present invention;

[0054] Figure 9 This is a partial exploded view of the handrail mounting base according to an embodiment of the present invention;

[0055] Figure 10 The armrest rotation angle of the child seat according to an embodiment of the present invention Figure 1 ;

[0056] Figure 11 The armrest rotation angle of the child seat according to an embodiment of the present invention Figure 2 ;

[0057] Figure 12 The armrest rotation angle of the child seat according to an embodiment of the present invention Figure 3 .

[0058] Explanation of reference numerals in the attached figures:

[0059] 1. Seat; 11. Armrest mounting base; 12. Mounting cavity; 13. Cover plate; 2. Armrest; 3. Drive component; 31. Drive rod; 32. Second threaded hole; 4. Transmission component; 41. Bevel gear; 42. Insertion hole; 43. First threaded hole; 5. First bevel gear disc; 51. First connecting hole; 52. Positioning hole; 6. Second bevel gear disc; 61. Second connecting hole; 62. Clearance hole; 7. Connector; 8. Battery; 9. Button; 91. LED bead; 10. Controller. Detailed Implementation

[0060] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0061] Combination Figures 1 to 12 As shown, this embodiment of the invention provides a method for adjusting and controlling the electric armrest of a child seat, applied to a child seat electric armrest adjustment system. The child seat electric armrest adjustment system includes a controller, an adjustment module, and a drive module that are interconnected. The method for adjusting and controlling the electric armrest of a child seat includes the following steps:

[0062] like Figure 1 As shown, the adjustment module obtains the operator's required height information and return height information.

[0063] This invention receives the user's input of desired and return-to-position height information via a controller, enabling "one-time setting and multiple reuses" of the armrest height. Compared to the prior art, which requires manual pressing of a button each time to reach the desired height, this invention allows the user (parent) to pre-set or quickly select a suitable armrest height (desired height) for the current child, and simultaneously set a default height (return-to-position height) for easy child getting in and out of the seat or for regular storage. This significantly reduces repetitive operations in daily use, and is especially suitable for situations where time is limited and tasks are rushed in the care of young children, improving ease of operation and user experience.

[0064] Real-time detection of whether a start signal has been received;

[0065] If the start signal is received, the control drive module will operate to drive the handrail to adjust to the position corresponding to the required height information; if no start signal is received, the handrail will not move.

[0066] Once a child is seated, the controller directly retrieves the stored required height information via a start signal and sends it to the drive module, enabling the drive module to automatically and accurately adjust the armrests to the preset height position. This process requires no manual intervention or visual estimation, saving effort and ensuring consistent and accurate height adjustment. It avoids errors or discomfort that may result from manual fine-tuning each time, and is especially beneficial for providing continuous, well-fitting support and protection for children.

[0067] Real-time detection of whether a homing signal has been received;

[0068] If the return signal is received, the drive module is controlled to operate to drive the handrail to adjust to the position corresponding to the return height information; if it is not received, the handrail does not move.

[0069] When the armrest needs to return to its original position, the controller receives a return signal and drives the armrest to adjust to the desired height. This return function further optimizes the overall workflow of using the seat. With a single touch, the armrest automatically returns to the preset height (such as the lowest position or the safe storage position), accommodating diverse needs for users who dislike using armrests. It also facilitates cleaning and tidying after children leave the seat or preparing it for the next use. This overcomes the lack of intelligent reset capability in traditional electric armrests, making the product more user-friendly and practical.

[0070] like Figure 3 As shown, the step of obtaining the demand height information includes:

[0071] Determine whether the required height setting signal sent by the adjustment module has been received; if the required height setting signal has been received, determine whether the first input signal sent by the adjustment module has been received; if the required height setting signal has not been received, the handrail will not move.

[0072] Determine whether the first input signal currently received is the first height value, the first child's height value, the first seat tilt angle value, or the first current height information input by the operator;

[0073] When the first input signal received is the first height value directly input by the operator, then the first height value is the required height information.

[0074] This method of directly inputting height values ​​provides the simplest and most direct input method, satisfying users who have specific requirements for the position of the handrail. It is easy to operate. For handrails that rise and fall vertically, the height value is generally in centimeters. For handrails that rotate and rise, the height value can be in centimeters or in degrees of rotation angle.

[0075] When the first input signal received is the first child height value input by the operator, the first child height value is converted into the corresponding height value of the first handrail according to the pre-stored child height and handrail height correspondence table. The corresponding height value of the first handrail is the required height information.

[0076] Children of different heights require different handrail heights. By setting up an ergonomic table that matches children's heights with handrail heights, the operator can easily convert the child's height (e.g., 75cm-155cm) into the handrail height, making it simple, convenient, and faster, and meeting the needs of the general public.

[0077] When the first input signal received is the first seat tilt angle value adjusted by the operator, the first seat tilt angle value is converted into the corresponding height value of the second armrest according to the pre-stored seat tilt angle and armrest height correspondence table. The corresponding height value of the second armrest is the required height information.

[0078] The seat is equipped with a tilt angle adjustment module, which includes a sensor for measuring the seat's tilt angle. The tilt is adjusted by a drive motor mounted on the seat. After the adjustment module receives the tilt command input by the operator, the drive motor tilts the seat. The controller then receives the real-time tilt angle value from the sensor, thus forming the initial tilt angle value. When a child is awake, the seat is generally upright or tilted; when a child is sleeping, the seat is generally reclined. As the seat back angle changes, the child's posture and support requirements also change. By establishing a table corresponding to the seat tilt angle and armrest height, the controller can automatically adjust the armrests relative to the child's body using the drive module. This eliminates the need for the user to adjust the backrest and armrests separately, achieving coordinated adaptive posture of the entire seat and improving both comfort and safety.

[0079] When the first input signal received is the first start information input by the operator, the drive module is controlled to drive the handrail to reciprocate up and down; it is determined whether the first stop information input by the operator is received through the adjustment module. If the first stop information is received, the drive module is controlled to drive the handrail to stop up and down and stop at the first current height, which is the required height information.

[0080] The handrail is raised and lowered by controlling the reciprocating motion of the handrail using the initial start information and the height is selected in real time using the initial stop information. This allows users to observe the position of the handrail during the actual raising and lowering process and stop it immediately when they deem it appropriate. This method is particularly suitable for scenarios where the appropriate height is uncertain and users wish to make a decision through intuitive trial and error. This method combines the labor-saving advantages of electric adjustment with the intuitiveness of manual adjustment, enhancing operational flexibility.

[0081] Optionally, the step of obtaining the repositioning height information includes:

[0082] Determine whether the return height setting signal sent by the adjustment module has been received; if the return height setting signal has not been received, the handrail will not move.

[0083] Determine whether a return height setting signal sent by the adjustment module has been received; if so, determine whether a second input signal sent by the adjustment module has been received.

[0084] If so, determine whether the currently received second input signal is a factory reset confirmation signal or a second height value, a second child height value, a second seat tilt angle value, or a second current height information input by the operator;

[0085] When the received second input signal is a factory reset confirmation signal, the pre-stored factory-customized reset height value is confirmed as the reset height information.

[0086] When the received second input signal is the second height value directly input by the operator, then the second height value is the positioning height information;

[0087] When the received second input signal is the second child height value input by the operator, the second child height value is converted into the third handrail corresponding height value according to the pre-stored child height and handrail height correspondence table. The third handrail corresponding height value is the return height information.

[0088] When the received second input signal is the second seat tilt angle value adjusted by the operator, the second seat tilt angle value is converted into the corresponding height value of the fourth armrest according to the pre-stored seat tilt angle and armrest height correspondence table. The corresponding height value of the fourth armrest is the return height information.

[0089] When the received second input signal is the second start information input by the operator, the drive module is controlled to drive the handrail to reciprocate up and down; it is determined whether the second stop information input by the operator is received through the adjustment module. If the second stop information is received, the drive module is controlled to drive the handrail to stop up and down and stop at the second current height, which is the return height information.

[0090] The input method for return height information is similar to that for required height information, including custom height values, height adjustment values ​​based on height or seat tilt angle, and factory-defined return height values. Factory-defined return heights are generally the highest or lowest position on the armrest's lifting path to meet general, standardized return requirements. Users can choose to accept the factory-defined return height value or customize it themselves to meet individual needs.

[0091] like Figure 2 As shown, optionally, after receiving the start signal, the process further includes the following steps:

[0092] The system checks whether the required height information is stored; if not, it does not send the start signal to the driver module; if so, it sends the start signal to the driver module.

[0093] This step adds a safety and logic self-checking mechanism to the system. Upon receiving the start signal, the controller does not execute unconditionally but first verifies whether the required height information exists. This effectively prevents the handrail from moving blindly without a preset target due to accidental activation of the start button, avoiding potential mechanical failures or safety hazards (such as pinching injuries). It ensures that every lifting operation is purposeful and based on a predetermined criteria, improving overall stability and reliability.

[0094] like Figure 2 As shown, optionally, the step of determining whether a start signal or a homing signal has been received includes:

[0095] Determine whether the adjustment module receives the start signal or the reset signal input by the operator through one or more of the following methods: button adjustment, touch screen adjustment, and voice adjustment.

[0096] Button and touchscreen controls satisfy traditional and reliable operating habits, with mature technology and controllable costs. Voice control frees up the hands; when parents are holding children or carrying items, they can directly control the armrest's height via voice commands, greatly improving ease of operation in specific inconvenient scenarios.

[0097] like Figure 2 As shown, optionally, the child seat electric armrest adjustment system further includes a protection module communicatively connected to the controller. The protection module includes a sensor unit and an obstruction detection protection unit. The child seat electric armrest adjustment control method further includes the following steps:

[0098] The system receives the real-time height value of the handrail detected by the sensor unit; it determines whether the real-time height value is consistent with the required height information or the return height information; if so, it controls the drive module to stop driving the handrail to rise and fall.

[0099] The protection module, serving as a guarantee of overall safety, achieves protection from open-loop control to closed-loop intelligence. The sensor unit detects the height in real time, monitors the actual position of the handrail, and compares it with the target value to ensure accurate stopping position, preventing positioning errors caused by motor slippage or inertia, and improving adjustment precision.

[0100] The system receives electrical characteristic values ​​of the drive module detected by the obstruction protection unit in real time, and determines whether the electrical characteristic values ​​exceed the safe range. If so, it determines that an obstruction has been detected and sends a release signal to the drive module, controlling the drive module to drive the handrail to stop lifting and to drive the handrail in the opposite direction to release the obstruction.

[0101] Electrical characteristics can include values ​​such as current, voltage, capacitance, power, resistance, and inductance. Taking current as an example, when the handrail encounters an obstacle (such as a child's hand, clothing, or toy) during lifting or lowering, the load increases instantaneously, causing the current value to exceed the safe range. The controller can promptly identify this anomaly and immediately command the drive module to stop forward movement and move in the opposite direction a short distance, thereby releasing the obstacle and preventing continuous squeezing that could cause user injury or equipment damage. This eliminates the potential risk of pinching, improves product safety, and makes it suitable for children.

[0102] like Figure 2As shown, the electric armrest adjustment system for the child seat also includes a status feedback module that is communicatively connected to the controller. The electric armrest adjustment control method for the child seat also includes the steps of: real-time monitoring of armrest movement status information and battery status information, and controlling the status feedback module to provide visual feedback, sound feedback and / or tactile feedback to the armrest movement status information and the battery status information.

[0103] The status feedback module achieves a closed-loop information system for human-computer interaction, significantly improving user experience and system transparency. Visual feedback (such as screen display, LED light color, and flashing mode) intuitively displays system status (such as running, target reached, low battery, fault, etc.), providing users with a clear overview. Auditory feedback (such as speaker beeps) delivers operational or alarm information audibly when the user's gaze is not on the seat. Tactile feedback (such as vibration from a vibration motor) provides a tangible confirmation of control. By employing one or more feedback methods, it ensures that users can clearly and promptly perceive operational results and system status, reducing misjudgments and making intelligent operation perceptible.

[0104] like Figure 4 As shown, the present invention also provides a child seat electric armrest adjustment system, including a controller, an adjustment module, and a drive module that are interconnected.

[0105] The adjustment module is used to receive demand height information, return height information, start signal and return signal, and transmit them to the controller;

[0106] The controller is used to receive information transmitted by the adjustment module and control the drive module to work according to the information;

[0107] The drive module is used to drive the handrail to lift and adjust its height.

[0108] Optionally, it also includes a protection module and a status feedback module.

[0109] The protection module includes a sensor unit and an obstruction protection unit. The sensor unit is used to detect the real-time height value of the handrail and send it to the controller. The obstruction protection unit is used to detect the electrical characteristic value of the drive module in real time and send it to the controller.

[0110] The status feedback module is used to receive the handrail movement status information and power status information transmitted by the controller and provide visual feedback, sound feedback and / or tactile feedback.

[0111] This embodiment implements the method into a specific hardware and communication architecture. The controller, adjustment module, and drive module work together to construct a complete closed-loop control system. The protection module and status feedback module are integrated as important subsystems, which not only physically realizes all the above-mentioned safety and interaction functions, but also means that this solution is an engineerable and mass-producible system-level solution. Its technical effect is reflected in integrating the scattered functions (memory, drive, interaction, protection, feedback) into an efficient, stable, and safe organic whole, providing a core component for the fully upgraded electric armrest adjustment of child seats.

[0112] like Figures 5 to 12 As shown, the present invention also provides a child seat, including the child seat electric armrest adjustment system described above.

[0113] like Figure 6 As shown, the drive module includes a drive component 3, a transmission component 4, a first bevel gear disk 5, and a second bevel gear disk 6. The drive component 3 is connected to the transmission component 4 and drives the transmission component 4 to rotate. The first bevel gear disk 5 is fixedly installed on the seat 1, and the second bevel gear disk 6 is rotatably installed on the seat 1. The transmission component 4 is provided with a bevel gear portion 41, which meshes with both the first bevel gear disk 5 and the second bevel gear disk 6. The gap between the first bevel gear disk 5 and the second bevel gear disk 6 forms a movable cavity. The bevel gear portion 41 is confined in the movable cavity and rotates circumferentially around the movable cavity.

[0114] like Figure 5 As shown, the drive component 3 is a rotary motor installed in the armrest 2. The seat 1 has an armrest mounting base 11, and the armrest 2 is rotatably mounted on the armrest mounting base 11. The outer shell of the armrest 2 is made of ABS material with an anti-slip surface treatment. Compared with the existing technology of using a linear motor or electric push rod to drive the armrest 2 to lift, the use of a rotary motor to drive the armrest 2 to lift improves transmission efficiency and space compatibility, making it easier to arrange in the small space of the seat 1. The first bevel gear plate 5 is fixedly installed on the armrest mounting base 11. When the drive component 3 drives the bevel gear part 41 to rotate, because the first bevel gear plate 5 is fixed and cannot rotate, the bevel gear part 41 revolves around the first bevel gear plate 5 while rotating on its own axis.

[0115] The first bevel gear disk 5 and the second bevel gear disk 6 cooperate to form a movable cavity, limiting the range of motion of the bevel gear part 41, avoiding the risk of dislocation or misalignment of the bevel gear part 41 during circumferential rotation, and ensuring the stability of the rotational motion. The first bevel gear disk 5 and the second bevel gear disk 6 simultaneously bear the pressure of the handrail 2 transmitted from the bevel gear part 41, which not only makes the transmission more stable, but also prevents damage caused by excessive force on a single bevel gear disk, thereby improving the durability and safety of the device.

[0116] like Figure 7 and Figure 9As shown, the drive module also includes a connector 7. The second bevel gear 6 and the connector 7 are rotatably connected. The center of the first bevel gear 5 is provided with a first connecting hole 51, and the center of the second bevel gear 6 is provided with a second connecting hole 61. The two ends of the connector 7 are respectively connected to the first connecting hole 51 and the second connecting hole 61. The seat 1 is provided with a mounting cavity 12 and a cover plate 13 covering the mounting cavity 12. The first bevel gear 5 is fixedly installed in the mounting cavity 12 by screws. The first bevel gear 5 is provided with a positioning hole 52 that matches the screw. The second bevel gear 6 is provided with a clearance hole 62. The hole axis of the clearance hole 62 is aligned with the hole axis of the positioning hole 52. The clearance hole 62 is used to avoid the screw, so that the screw passes through the second bevel gear 6.

[0117] The connector 7 is a rivet. The connector 7 fixes the gap between the first bevel gear disk 5 and the second bevel gear disk 6 by connecting the first connecting hole 51 and the second connecting hole 61. The structure is more stable during operation, and it also ensures coaxiality and alignment, reduces wear during off-center loading and rotation, and not only facilitates assembly and disassembly, but also reduces production costs and maintenance difficulty.

[0118] The design of the mounting cavity 12 provides a closed protective space for the first and second bevel gears, preventing the intrusion of external foreign objects and reducing the impact of dust and moisture on the components. It also makes the entire structure more modular, allowing for individual disassembly and maintenance. The cooperation between the positioning hole 52 and the clearance hole 62 simplifies the installation process, allowing screws to pass smoothly through the second bevel gear 6 to secure the first bevel gear 5, avoiding interference during assembly, saving installation and disassembly time, and facilitating improved production efficiency and subsequent maintenance.

[0119] The cover plate 13 further conceals the mounting cavity 12, preventing external foreign objects and protecting the interior from damage. Secured by screws, the cover plate 13 forms a stable connection with the mounting cavity 12, facilitating easy disassembly for maintenance or replacement and extending the device's lifespan. This modular design of the mounting cavity 12 facilitates overall assembly and subsequent maintenance; simply opening the cover plate 13 accesses the internal mechanisms, simplifying the disassembly process and improving maintainability. Disassembly is achieved by loosening the screws, and installation is quickly positioned using an interface guide structure (e.g., a guide ramp, not shown), with an operation time of ≤3 minutes—simple and fast. Users can disassemble the handrail 2 and send it back to the manufacturer for repair separately, reducing return costs and enhancing user choice and maintenance convenience.

[0120] like Figure 7As shown, the transmission component 4 is provided with a plug-in hole 42 and a first threaded hole 43. The axis of the plug-in hole 42 and the axis of the first threaded hole 43 are perpendicular. The driving component 3 includes a non-circular drive rod 31, which is plugged into the plug-in hole 42. The drive rod 31 is provided with a second threaded hole 32 that matches the first threaded hole 43. The first threaded hole 43 and the second threaded hole 32 are fixedly connected by screws. The design of the plug-in hole 42 and the non-circular drive rod 31 ensures the stability of power transmission and prevents freewheeling. The vertical arrangement of the threaded holes and the screw fixation enhance the connection's firmness, reduce the risk of disengagement due to vibration, improve transmission accuracy and reliability, and has a simple, reliable, and low-cost structure.

[0121] The drive module also includes a battery 8 and a charging interface. The battery 8 is electrically connected to the drive component 3 for power supply. The drive module is powered by the battery 8 or by an external power source through the charging interface, eliminating the need for an external power source. This makes the overall design more modular, more versatile, and compatible with more brands of seats 1. The charging interface (such as Type-C) supports dual power supply modes: ① Battery 8 mode: the contacts are used for charging the battery 8 (5V / 1A); ② External power supply mode: if the seat 1 has a 12V power supply, the contacts can directly power the motor, thereby enhancing adaptability and reliability.

[0122] The controller employs MCU (Microcontroller Unit) and BLE (Bluetooth Low Energy) technology to enable information interaction with user's mobile phone or vehicle central control terminal. Through real-time feedback and remote transmission of status information, it enhances the user's awareness of the seat's usage status, facilitating timely intervention in abnormal situations and improving the system's safety and intelligence.

[0123] The drive module includes an elastic limiting component (e.g., a spring or elastic soft rubber pad, not shown), which is positioned at the extreme positions of the handrail's rotation trajectory to achieve mechanical limiting. Dual protection is provided through "electronic limiting + mechanical limiting." Electronic limiting: A Hall sensor provides real-time feedback on the rotation angle; when it reaches -45° or 90°, the MCU controls the motor to reverse. Mechanical limiting: The elastic limiting component is a silicone elastic limiting block (hardness 50 Shore A). Even if the electronic limiting fails, the limiting block can elastically deform to buffer the impact force and prevent damage from overtravel. The dual limiting works in tandem, significantly improving the system's reliability and durability. Handrail angle error ≤ ±0.5°.

[0124] The adjustment module includes buttons, knobs, contact switches, or a touchscreen, driven by pressing, rotating, or touching. Taking the button as an example, the button is located on the side of the armrest and uses a waterproof, tactile button (lifespan ≥ 100,000 times). It works in conjunction with the MCU to achieve logic control: when the operator presses the button to send the start signal, the MCU drives the motor to rotate forward, causing the armrest to descend from 0° to -45°, and then automatically reverse to rise to 90°, repeating the cycle. When the operator presses the button again to send the stop signal, the MCU immediately sends a stop command to the motor, stopping its rotation and keeping the armrest at the current angle. The motor rotation speed is set to 5° / s to ensure smooth adjustment and avoid sudden angle changes. The one-button start / stop control logic is simple and intuitive, allowing users to quickly adjust the armrest position. Simultaneously, the reciprocating swing of the armrest can soothe children and attract their attention, enhancing the product's appeal. The adjustable rotation angle range ensures the controllability and safety of the armrest's movement, broadening its applicability. The armrests can be adjusted downwards from 0° to 45° to accommodate different usage postures, while 0°-90° provides upward support to enhance comfort.

[0125] An RGB LED is embedded in the center of the button, and the lighting effect logic is bound to the device status: ① Normal and stable (armrest stationary, no fault, battery ≥20%): LED off; ② Armrest rotating (reciprocating motion): Green light flashes (frequency 1Hz); ③ Obstruction: Yellow light flashes (frequency 2Hz); ④ Low battery (≤20%): Red light flashes (frequency 1Hz); ⑤ Charging: Blue light flashes (frequency 0.5Hz); ⑥ Fully charged: Blue light flashes off, LED turns off. The LED brightness is set to 50cd / m² to avoid strong light stimulating children's eyes. Through the combination of different LED colors (green, yellow, red, blue) and flashing modes, various system states such as "normal operation", "obstruction warning", "low battery", and "charging status" are clearly distinguished, realizing visual feedback of the status feedback module.

[0126] The sensor unit includes a Hall sensor connected to the motor. The Hall sensor can collect the motor's rotational state (e.g., rotation angle, speed) and current data in real time and transmit this data to the MCU for precise control of the motor's start / stop, direction, and speed. The MCU has a preset normal load current threshold (e.g., 0.3A-1.2A): when the handrail encounters an obstacle (such as a child's finger or clothing), the motor load increases sharply, causing abnormal fluctuations in the current value. For example, if the current exceeds 1.2A (i.e., exceeding the safety threshold), the MCU determines that an obstacle has been encountered and cuts off the motor drive circuit within 500ms, stopping the motor's rotation. Simultaneously, it drives the motor to rotate in the opposite direction by 0.5 revolutions (the handrail rotates approximately 3°) to release the obstacle. If three consecutive obstacles are encountered, the MCU locks the motor and requires a 3-second power disconnection to reset. The Hall sensor, by detecting the current value in conjunction with MCU control, achieves obstacle detection protection. This rapid response and high reliability effectively prevent the risk of pinching injuries and structural damage, significantly improving product safety.

[0127] The above embodiments are merely illustrative of several implementation methods of this disclosure, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of this disclosure, and these modifications and improvements all fall within the protection scope of this disclosure.

Claims

1. A method for adjusting and controlling the electric armrest of a child car seat, characterized in that, An adjustment system for electric armrests in child seats is provided, comprising a controller, an adjustment module, and a drive module that are interconnected. The method for adjusting the electric armrests in a child seat includes the following steps: The adjustment module obtains the operator's required height and return height information. Real-time detection of whether a start signal has been received; If the start signal is received, the drive module is controlled to work to drive the armrest to adjust to the position corresponding to the required height information; Real-time detection of whether a homing signal has been received; If the return signal is received, the drive module is controlled to operate to drive the handrail to adjust to the position corresponding to the return height information.

2. The method for adjusting and controlling the electric armrest of a child seat according to claim 1, characterized in that, The steps for obtaining demand height information include: Determine whether the required height setting signal sent by the adjustment module has been received; if the required height setting signal has been received, determine whether the first input signal sent by the adjustment module has been received. If so, determine whether the currently received first input signal is the first height value, the first child's height value, the first seat tilt angle value, or the first current height information input by the operator; When the first input signal received is the first height value directly input by the operator, then the first height value is the required height information. When the first input signal received is the first child height value input by the operator, the first child height value is converted into the corresponding height value of the first handrail according to the pre-stored child height and handrail height correspondence table. The corresponding height value of the first handrail is the required height information. When the first input signal received is the first seat tilt angle value adjusted by the operator, the first seat tilt angle value is converted into the corresponding height value of the second armrest according to the pre-stored seat tilt angle and armrest height correspondence table. The corresponding height value of the second armrest is the required height information. When the first input signal received is the first start information input by the operator, the drive module is controlled to drive the handrail to reciprocate up and down; it is determined whether the first stop information input by the operator is received through the adjustment module. If the first stop information is received, the drive module is controlled to drive the handrail to stop up and down and stop at the first current height, which is the required height information.

3. The method for adjusting and controlling the electric armrest of a child seat according to claim 1, characterized in that, The steps for obtaining the repositioning height information include: Determine whether a return height setting signal sent by the adjustment module has been received; if so, determine whether a second input signal sent by the adjustment module has been received. If so, determine whether the currently received second input signal is a factory reset confirmation signal or a second height value, a second child height value, a second seat tilt angle value, or a second current height information input by the operator; When the received second input signal is a factory reset confirmation signal, the pre-stored factory-customized reset height value is confirmed as the reset height information. When the received second input signal is the second height value directly input by the operator, then the second height value is the positioning height information; When the received second input signal is the second child height value input by the operator, the second child height value is converted into the third handrail corresponding height value according to the pre-stored child height and handrail height correspondence table. The third handrail corresponding height value is the return height information. When the received second input signal is the second seat tilt angle value adjusted by the operator, the second seat tilt angle value is converted into the corresponding height value of the fourth armrest according to the pre-stored seat tilt angle and armrest height correspondence table. The corresponding height value of the fourth armrest is the return height information. When the received second input signal is the second start information input by the operator, the drive module is controlled to drive the handrail to reciprocate up and down; it is determined whether the second stop information input by the operator is received through the adjustment module. If the second stop information is received, the drive module is controlled to drive the handrail to stop up and down and stop at the second current height, which is the return height information.

4. The method for adjusting and controlling the electric armrest of a child seat according to claim 1, characterized in that, After receiving the start signal, the process further includes the following steps: The system checks whether the required height information is stored; if not, it does not send the start signal to the driver module; if so, it sends the start signal to the driver module.

5. The method for adjusting and controlling the electric armrest of a child seat according to claim 1, characterized in that, The step of determining whether a start signal or a return signal has been received includes: Determine whether the adjustment module receives the start signal or the reset signal input by the operator through one or more of the following methods: button adjustment, touch screen adjustment, and voice adjustment.

6. The method for adjusting and controlling the electric armrest of a child seat according to claim 1, characterized in that, The child seat electric armrest adjustment system further includes a protection module communicatively connected to the controller. The protection module includes a sensor unit and an obstacle detection protection unit. The child seat electric armrest adjustment control method further includes the following steps: The system receives the real-time height value of the handrail detected by the sensor unit; it determines whether the real-time height value is consistent with the required height information or the return height information; if so, it controls the drive module to stop driving the handrail to rise and fall. The system receives electrical characteristic values ​​of the drive module detected by the obstruction protection unit in real time, and determines whether the electrical characteristic values ​​exceed the safe range. If so, it determines that an obstruction has been detected and sends a release signal to the drive module, controlling the drive module to drive the handrail to stop lifting and to drive the handrail in the opposite direction to release the obstruction.

7. The method for adjusting and controlling the electric armrest of a child seat according to claim 1, characterized in that, The child seat electric armrest adjustment system also includes a status feedback module that is communicatively connected to the controller. The child seat electric armrest adjustment control method further includes the steps of: real-time monitoring of armrest movement status information and power status information, and controlling the status feedback module to provide visual feedback, sound feedback and / or tactile feedback to the armrest movement status information and the power status information.

8. A child seat electric armrest adjustment system, characterized in that, This includes controllers, adjustment modules, and drive modules that are interconnected. The adjustment module is used to receive demand height information, return height information, start signal and return signal, and transmit them to the controller; The controller is used to receive information transmitted by the adjustment module and control the drive module to work according to the information; The drive module is used to drive the handrail to lift and adjust its height.

9. The child seat electric armrest adjustment system according to claim 8, characterized in that, It also includes a protection module and a status feedback module. The protection module includes a sensor unit and an obstruction protection unit. The sensor unit is used to detect the real-time height value of the handrail and send it to the controller. The obstruction protection unit is used to detect the electrical characteristic value of the drive module in real time and send it to the controller. The status feedback module is used to receive the handrail movement status information and power status information transmitted by the controller and provide visual feedback, sound feedback and / or tactile feedback.

10. A child car seat, characterized in that, Includes the child seat electric armrest adjustment system as described in claim 8 or 9.

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