Safety neck pillow, control method and automobile seat

Abstract

The invention relates to the technical field of automobile safety equipment, discloses a safety neck pillow and a control method thereof, and belongs to the technical field of automobile safety. The safe neck pillow comprises a neck pillow body and a controller, an inflatable air bag is arranged in the neck pillow body, the air bag is connected to an electric control valve through an air pipe, and the electric control valve is communicated with a vacuum bottle. When a vehicle is collided, the controller receives a signal of a computer in the vehicle and triggers the electric control valve to be opened, so that the air bag crumples instantly under the action of vacuum negative pressure, and the neck is prevented from being injured. The electric control valve adopts the design that the diaphragm is broken by the explosion wire, the response time is only several microseconds, and rapid and reliable action is ensured. The neck pillow body further comprises the outer skin and the filler, and comfort and safety are both considered. The invention further relates to an automobile seat and a control method, automatic crumple is achieved through intelligent linkage, the problem that a traditional neck pillow may cause neck injury during collision is effectively solved, and the automobile seat has the advantages of being simple in structure, rapid in response, safe, reliable and the like.

Description

Technical Field

[0001] This invention relates to the field of automotive safety equipment technology, specifically to a safety neck pillow and control method, and also to a car seat. Background Technology

[0002] In the field of modern automotive safety, the protective function of car seat headrests is crucial. Currently, most car seats have a protruding headrest in the upper part, and even some one-piece seats without a separate headrest have a similar protruding structure at the top. Their core function is to protect the vulnerable neck in the event of a collision.

[0003] Specifically, when a vehicle comes to a sudden stop after a collision, the human body continues to move forward due to inertia. After reaching its forward limit, under the combined effect of the seatbelt's tension and the body's own elasticity, it will move rapidly backward. Due to the characteristics of the human body structure, the head's range of motion is greatest at this point; this phenomenon is known as the "whiplash effect." During this process, the head will first impact the headrest, thus restricting its movement and effectively preventing neck injury caused by excessive backward bending.

[0004] However, this protruding headrest has a significant side effect: it leaves the neck unsupported, negatively impacting passenger comfort. To address this, a neck pillow is installed. However, this practice poses a significant safety hazard. During a whiplash motion, the neck will strike the neck pillow before the head, potentially causing serious injury.

[0005] In conclusion, while existing car seat headrests can protect the neck during a collision, they can affect comfort. On the other hand, additional neck pillows pose safety risks, making it impossible to simultaneously ensure both safety and comfort. Summary of the Invention

[0006] One objective of this invention is to provide a safe neck pillow that achieves instantaneous collapse of the neck pillow by employing vacuum negative pressure and controlling the conduction of an electronically controlled high-speed valve using electrical signals. This invention enables the active change of the neck pillow's volume, effectively resolving the contradiction between safety and comfort in existing car seat neck pillows.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] This invention provides a safety neck pillow, comprising:

[0009] The neck pillow body has an internal air bladder, which is filled with air to maintain the volume of the neck pillow and provide neck support. The air bladder is connected to an electrically controlled valve through an air tube, and the electrically controlled valve is connected to a vacuum bottle that maintains a vacuum negative pressure state.

[0010] The controller is used to receive the collision trigger signal sent by the in-vehicle computer and output the execution current to the electronically controlled valve to control its opening and closing state;

[0011] When the in-vehicle computer determines that there is a risk of a forward collision, the controller triggers the electronic valve to open, connecting the airbag to the vacuum bottle. The airbag collapses instantly under the vacuum negative pressure to cushion the impact to the neck.

[0012] In addition to the above-mentioned technical features, the present invention has also made optimizations and improvements in the following aspects:

[0013] As a preferred embodiment of the present invention, the neck pillow body includes an outer skin and a filling material, the air bladder is disposed inside the outer skin and supports the neck when inflated, and the filling material fills the gap between the outer skin and the air bladder.

[0014] As a preferred embodiment of the present invention, the airbag is filled with air at 1 atmosphere under normal conditions.

[0015] As a preferred embodiment of the present invention, the electrically controlled valve includes:

[0016] The valve body has a tubular structure;

[0017] A diaphragm is placed inside the valve body to isolate the gas flow on both sides of the valve body. An explosive wire is installed on the diaphragm. The explosive wire is connected to a capacitor and a thyristor through electrodes to form a charging and discharging circuit.

[0018] As a preferred embodiment of the present invention, the electrically controlled valve is normally closed, opens when the execution current is received, and the conduction time is several microseconds.

[0019] As a preferred embodiment of the present invention, the controller receives a collision signal through the vehicle computer and outputs an execution current to the electronically controlled valve after receiving the signal.

[0020] The second objective of this invention is to provide a control method for a safety neck pillow. As a preferred embodiment of this invention, the method includes the following steps:

[0021] The controller receives vehicle collision signals.

[0022] The controller outputs an execution current to the electrically controlled valve, energizing the explosive wire and rupturing the diaphragm;

[0023] The airbag is connected to the vacuum bottle through a trachea and collapses rapidly under the vacuum negative pressure.

[0024] As a preferred embodiment of the present invention, the plasma generated after the explosive wire is energized breaks the diaphragm within microseconds.

[0025] A third objective of the present invention is to provide a car seat including the aforementioned safety neck pillow, wherein the safety neck pillow is installed below the headrest of the car seat.

[0026] Based on the above description of the technical content, this application achieves a technological breakthrough in balancing vehicle collision safety protection and daily use comfort through the collaborative design of multi-dimensional technical features. The technical effects of this invention are mainly reflected in the following aspects:

[0027] 1. Improve neck safety protection during collisions

[0028] Neck impact cushioning: When a frontal collision is imminent, the controller receives a collision trigger signal and quickly activates an electronically controlled valve to connect the airbag to a vacuum bottle maintained under negative pressure. The airbag then collapses instantly under this negative pressure, effectively cushioning the impact on the neck and preventing serious injury caused by the "whiplash effect" of the neck striking the neck pillow before the head does.

[0029] Actively avoids injury: Unlike traditional neck pillows that cannot actively change shape upon impact, this invention uses an electronically controlled valve and a vacuum bottle to achieve controlled collapse of the neck pillow, actively eliminating the risk of impact to the neck and solving the problem of balancing safety and comfort in traditional neck pillows.

[0030] 2. Ensure comfort during normal use.

[0031] Stable neck support: The air bladder inside the neck pillow is filled with one atmosphere of air under normal conditions, which maintains the pillow's volume and provides stable support for the user's neck. Meanwhile, the polyester cotton and other materials filling the space between the outer skin and the air bladder further enhance the neck pillow's comfort and fit.

[0032] Reasonable structural design: The neck pillow body adopts a layered structure of outer skin, filling material and air bladder. The filling material fills the gap between the outer skin and the air bladder, so that the neck pillow can maintain a good shape and provide a soft touch during normal use, thus improving the driving and riding experience.

[0033] 3. Achieve rapid response and precise control

[0034] Rapid valve activation: The electrically controlled valve is normally closed. Upon receiving an actuation current, the detonating wire is energized to generate plasma, which ruptures the diaphragm within microseconds, opening the valve. This design ensures rapid connection between the airbag and the vacuum bottle, enabling the airbag to collapse in an extremely short time, meeting the emergency response requirements during a collision.

[0035] Highly efficient signal transmission: The controller receives collision signals through the vehicle's computer and immediately outputs execution current to the electronically controlled valves upon receiving the signal. The entire control process is highly efficient and reliable, avoiding signal transmission delays and ensuring that the neck pillow reacts at the first moment of a collision hazard.

[0036] 4. Optimize system structure and performance

[0037] Vacuum negative pressure drive: It uses the vacuum negative pressure state maintained by the vacuum bottle as the power source for airbag collapse. No additional power device is required. It has a simple structure and strong driving force, which can ensure that the airbag collapses quickly and effectively buffers the impact on the neck.

[0038] The circuit design is reliable: the explosive wire, electrodes, capacitor, and thyristor in the electrically controlled valve form a charging and discharging circuit. Capacitor discharge causes the explosive wire to vaporize instantaneously, generating plasma that breaks the diaphragm, thus achieving rapid valve opening. This circuit design features concentrated energy release and fast response, ensuring the system's reliability and stability.

[0039] 5. Enhance product practicality and applicability

[0040] Integrated into the car seat: The safety neck pillow is installed under the headrest of the car seat, forming a whole with the car seat. It not only does not affect the original headrest's function of protecting the head in a collision, but also provides neck support during normal use, improving the overall safety and comfort of the seat.

[0041] The control method is simple: the collapse process of the neck pillow is controlled by electrical signals, requiring no manual intervention and making it easy to use. At the same time, the system has a simple structure, is easy to manufacture and install, and has high practicality and market promotion value.

[0042] In summary, this invention, by incorporating an airbag within the neck pillow and connecting it to a vacuum bottle and an electrically controlled valve, allows the controller to trigger the valve to open upon vehicle collision, causing the airbag to instantly collapse under vacuum negative pressure. This not only ensures comfort during normal use by supporting the neck with the inflated airbag and filler, but also actively eliminates the risk of impact to the neck during a collision. Combined with a microsecond-level rapid response structure that allows the exploding wire to rupture the membrane, it achieves a balance between safety and comfort. Furthermore, the system has a simple structure and convenient electrical signal control, effectively solving the problem of neck injury that may be caused by the "whiplash effect" of traditional neck pillows. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the combined installation structure of the safety neck pillow and car seat of the present invention;

[0044] Figure 2 This is a schematic diagram showing the connection relationship between the airbag, vacuum bottle, and controller of the safety neck pillow of the present invention;

[0045] Figure 3This is a diagram showing the state of the airbag of the present invention under normal air pressure;

[0046] Figure 4 This is a diagram showing the collapse state of the airbag of the present invention under vacuum negative pressure;

[0047] Figure 5 This is a schematic diagram of the electrical control principle of the safety neck pillow of this invention;

[0048] Figure 6 This is a schematic diagram of the structure of the electrically controlled valve in this invention;

[0049] Figure 7 yes Figure 6 A partial sectional view;

[0050] Figure 8 This is a control principle diagram of an electrically controlled valve.

[0051] In the diagram: 1. Car seat; 2. Headrest; 3. Neck pillow; 4. Outer cover; 5. Filler; 6. Airbag; 7. Air tube; 8. Electrically controlled valve; 81. Valve body; 82. Diaphragm; 83. Electrode; 84. Explosion wire; 85. Capacitor; 86. Thyristor; 9. Vacuum bottle; 10. Controller. Detailed Implementation

[0052] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0053] I. Explanation of descriptive terms used in this invention

[0054] The embodiments provided in conjunction with the technical solutions of this invention are intended to make the invention more thorough and complete, and to fully express the scope of the invention to those skilled in the art. It should be noted that unless otherwise specifically stated in this invention, the relative arrangements of components described in these embodiments should be interpreted as merely exemplary and not as a limitation on the technical solutions of this invention.

[0055] In this invention, when directional terms such as "up," "down," "left," "right," "bottom," and "top" are used, they are defined relative to the directions shown in the accompanying drawings and are used only to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. These or other directional terms should not be construed as restrictive terms.

[0056] In this invention, the terms "a," "an," "an," "the," and similar words used do not indicate quantity limitations and can represent singular or plural. The terms "comprising," "including," "having," and any variations thereof used in this invention are intended to cover non-exclusive inclusion; the terms "first," "second," "third," etc., used in this invention are merely to distinguish similar objects and do not represent a specific ordering of objects.

[0057] In this invention, when a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other devices without an intermediary device, or it may be not directly connected to the other devices but have an intermediary device.

[0058] Furthermore, this invention does not discuss in detail the technologies and equipment known to those skilled in the art, but where appropriate, such technologies and equipment should be considered part of the specification.

[0059] II. The core technical problem to be solved by the technical solution of this application

[0060] Existing car seat headrest technology has the following problems:

[0061] On the one hand, the protruding headrests on most car seats can effectively prevent neck injuries caused by excessive backward bending by restricting head movement during a vehicle collision, thus playing an important safety protection role. However, this leaves the neck in a suspended state, losing proper support, which to some extent affects the comfort of the driver and passengers.

[0062] On the other hand, neck pillows installed to address comfort issues, while providing neck support, pose significant safety hazards. In the event of a vehicle collision and the resulting whiplash effect, the neck will strike the neck pillow before the head, potentially causing serious injury.

[0063] Overall, existing automotive seat headrest technology struggles to simultaneously address both safety and comfort, failing to effectively protect the neck during a collision while providing comfortable neck support for occupants. This has become a pressing technical challenge in the current automotive seat headrest field.

[0064] III. In view of the above problems, the present invention provides a technical solution to solve the above problems. The following describes specific embodiments and references. Figure 1-8 As shown, the technical solution, working principle, and technical effects of the present invention will be explained in detail.

[0065] Example 1: Basic Structure and Working Principle of a Safety Neck Pillow

[0066] like Figure 1 , Figure 2 As shown, the safety neck pillow of this embodiment includes a neck pillow body 3, the outer layer of which is wrapped with a fabric outer skin 4, and a cylindrical airbag 6 is provided in the center of the interior. The gap between the airbag and the outer skin is filled with a polyester cotton filling material 5.

[0067] The airbag 6 is filled with air at 1 atmosphere and is connected to the electrically controlled valve 8 through an air tube 7 with an inner diameter of 5 mm.

[0068] The valve body 81 of the electrically controlled valve 8 is a tubular structure. The internal diaphragm 82 is made of polyimide polymer film. A copper explosion wire 84 with a diameter of 0.1 mm is wound on the diaphragm. The explosion wire forms a discharge circuit with an electrode 83, a capacitor 85 with a voltage of 300V and a capacitance of 100mF, and a thyristor 86.

[0069] The other end of the electronically controlled valve 8 is connected to a 1L vacuum bottle 9 via an air tube, and the inside of the vacuum bottle is maintained at a vacuum negative pressure of 10^-3 Pa. The controller 10 is integrated into the automotive seat electronic control system and communicates with the vehicle's computer via a CAN bus.

[0070] like Figure 3 , Figure 7 , Figure 8 As shown, during normal driving, the electronically controlled valve 8 is normally closed, and the airbag 6 remains inflated to support the neck.

[0071] When the in-vehicle computer determines the risk of a forward collision through the acceleration sensor, it sends a high-level trigger signal to the controller 10. The controller immediately outputs a trigger current to the thyristor 86, and the capacitor 85 discharges through the explosion wire 84.

[0072] Within microseconds, the explosive wire is vaporized into plasma by high temperature, generating a localized shock wave that ruptures the diaphragm 82, connecting the gasbag 6 to the vacuum bottle 9. At this moment, as... Figure 2 , Figure 4 As shown, the air inside the airbag is rapidly drawn into the vacuum bottle under vacuum negative pressure, allowing the airbag to completely collapse within 50ms, thus preventing neck injury from impact with the neck pillow.

[0073] Specifically, such as Figure 5 As shown, this application is used to trigger the protection mechanism of the safety neck pillow when a vehicle collision occurs. The following is a description of the working principle of this application:

[0074] 1. Collision Events and Signal Acquisition

[0075] When a vehicle collides, sensors detect the impact signal (analog signal) and transmit it to the vehicle's computer.

[0076] 2. Signal Processing and Judgment

[0077] The vehicle's computer samples the analog signals collected by the sensors and converts them into digital signals.

[0078] The vehicle's computer determines the signal based on preset safety conditions (such as impact intensity thresholds). If the triggering conditions are met (e.g., a dangerous impact level is reached), the vehicle's computer sends an execution command to the controller.

[0079] 3. Trigger control and current output

[0080] After receiving the execution command, the trigger control circuit inside the controller outputs a high-level signal to the thyristor, causing the thyristor to conduct.

[0081] After the thyristor is turned on, the capacitor in the internal charging circuit of the controller outputs drive current to the electronically controlled valve through the thyristor.

[0082] 4. Actions of the executing agency

[0083] The electrically controlled valve opens under the action of the driving current, thereby triggering the mechanical action of the safety neck pillow (such as rapid inflation or adjustment of position) to protect the occupant's neck safety.

[0084] Based on the above control process, this application has the following characteristics.

[0085] Closed-loop control: The system detects collision signals in real time through sensors, and the vehicle's computer makes condition judgments to form a closed-loop feedback.

[0086] Rapid response: The thyristor has a fast turn-on speed, which can ensure that the electrically controlled valve is triggered in a very short time.

[0087] High reliability: Preset security conditions prevent false triggering and ensure that the protection mechanism is activated only when necessary.

[0088] This application achieves rapid detection and response to collision events through the coordinated operation of sensors, on-board computer, controller, and electronically controlled valves, thereby effectively improving vehicle safety performance.

[0089] Compared with traditional neck pillows, this safety neck pillow uses a vacuum negative pressure collapse mechanism to reduce the impact force on the neck during a collision from 800N to below 200N, achieving dynamic protection of "normal neck support - instantaneous collapse upon collision".

[0090] Tests showed that the response time of the electronically controlled valve was controlled within 5μs, meeting the synchronous triggering requirements of the automotive airbag system. This is much faster than the movement speed of the human neck during a collision, effectively reducing the risk of neck injury.

[0091] Meanwhile, the combination of polyester cotton filling and inflatable airbags ensures neck support comfort during daily use.

[0092] Example 2: Safety Neck Pillow for Optimized Electrically Controlled Valves

[0093] like Figure 6 , Figure 7 As shown, the difference between this embodiment and embodiment 1 lies in the material of the diaphragm 82 of the electrically controlled valve 8 and the specifications of the explosion wire 84.

[0094] The diaphragm 82 is made of polyimide polymer film, with its thickness reduced from 0.1 mm in Example 1 to 0.05 mm, and the explosion wire 84 is replaced with an aluminum wire with a diameter of 0.02 mm. Other structures, such as the valve body 81, electrode 83, and capacitor 85, are the same as in Example 1.

[0095] The working principle of the electrically controlled valve in this embodiment is as follows:

[0096] Because the diaphragm 82 is thinner and has higher material strength, and the explosive wire 84 has a thinner diameter, the vaporization time of the aluminum explosive wire 84 is shortened to 2-3 microseconds after the controller 10 outputs the execution current. The resulting shock wave is more concentrated and can break the polyimide diaphragm 82 more quickly. The connection time between the vacuum bottle 9 and the airbag 6 is shortened by about 40% compared to Example 1, and the airbag collapse speed is further improved.

[0097] In this embodiment, the optimized electronically controlled valve has a faster response speed, and the airbag collapse time can be controlled within 5 milliseconds, enabling more precise matching of the neck movement trajectory at the moment of impact. Furthermore, the polyimide diaphragm has superior aging resistance compared to ordinary polymer materials, extending the lifespan of the neck pillow and reducing the risk of failure during long-term use.

[0098] Example 3: Vacuum Negative Pressure Collapse Control Method for Safety Neck Pillow

[0099] This invention also discloses a control method for a safety neck pillow, comprising the following steps:

[0100] Signal reception: The controller 10 receives the collision signal sent by the in-vehicle computer via the CAN bus. The signal includes parameters such as collision intensity and direction. For example, it is triggered when the frontal collision acceleration exceeds 30g.

[0101] Current output: Within 0.5 milliseconds after receiving the signal, the controller 10 outputs a 12V, 50A pulse execution current to the electric valve 8, triggering the thyristor 86 to conduct.

[0102] Diaphragm rupture: Capacitor 85 is charged at 300V and stores 200J of energy. It discharges through electrode 83 to the explosive wire 84. The explosive wire vaporizes into plasma within 3 microseconds, rupturing diaphragm 82.

[0103] Airbag collapse: Airbag 6 is connected to vacuum bottle 9 with a negative pressure of -0.9 atm. Under the action of pressure difference, the internal air is quickly drawn into the vacuum bottle, and the airbag collapses within 8 milliseconds, reducing the volume of the neck pillow by more than 70%.

[0104] Based on the above method steps, to further clarify this application, the parameters involved in the method process are described below:

[0105] The signal processing delay of controller 10 is set to ≤1 millisecond to ensure real-time response to collision signals. The charging voltage of capacitor 85 is selected to be 300V, storing approximately 4.5J of energy to ensure the energy required for the instantaneous vaporization of the explosive wire. The purpose is to generate a sufficiently large current in the explosive wire 84 to rapidly vaporize it.

[0106] The trigger current threshold of thyristor 86 is 3A to avoid false triggering;

[0107] The inner diameter of the trachea 7 is designed to be 5mm to balance gas flow rate and tubing resistance, ensuring that the collapse time meets the standard. The negative pressure of the vacuum bottle 9 is maintained at -0.9atm to ensure the pressure differential force when the airbag 6 collapses, and to avoid delayed collapse due to insufficient negative pressure.

[0108] In summary, this invention provides a control method for a safety neck pillow. By combining electrical signal triggering with vacuum negative pressure, and through precise timing control and parameter matching, the neck pillow achieves millisecond-level response collapse. Collision testing has verified that it can reduce the impact force on the neck by more than 60%, significantly better than traditional neck pillows. The control process is simple and reliable, requires no manual intervention, and is highly integrated with vehicle safety systems, making it suitable for mass production applications in various vehicle models.

[0109] The electronically controlled triggering method has higher reliability and is not affected by vehicle posture or collision angle. In multiple simulated collision tests, the success rate of neck pillow collapse reached 100%, with no cases of diaphragm rupture failure.

[0110] Example 4: Intelligent Collapse Control Method Based on Multi-Sensor Fusion

[0111] This embodiment adds the following steps to embodiment 3:

[0112] Sensor data fusion: The controller 10 simultaneously collects data from the steering wheel angle sensor, wheel speed sensor and seat pressure sensor to determine the collision type, such as frontal collision, side collision or rear-end collision.

[0113] Collapse strategy adjustment: If the collision is determined to be a side collision, the controller will trigger the valve after a 20ms delay to prevent the neck pillow on the non-collision side from collapsing unnecessarily; if the collision is a rear-end collision, the controller will not trigger the valve to maintain the neck pillow's support state to prevent whiplash injury.

[0114] Based on the above method steps, to further clarify this application, the parameters involved in the method process are described below:

[0115] The added sensor data sampling frequency is 1000Hz, and the processing delay of the data fusion algorithm is ≤10ms; the trigger thresholds for different collision types are determined by training with real vehicle collision data, such as a frontal collision acceleration threshold of 15g and a side collision threshold of 20g.

[0116] In summary, the multi-sensor fusion strategy improved the neck pillow trigger accuracy from 95% to 99.2%, reducing the safety risks caused by false triggers. In side impact tests, this method reduced the Neck Injury Index (NIC) by 18%, while also preventing additional injuries caused by the neck pillow's failure to collapse during frontal collisions.

[0117] Example 5: Optimization Control Method Based on Pre-Collision Detection

[0118] Pre-collision signal recognition: The controller 10 receives monitoring data from the in-vehicle radar and camera in real time. When an obstacle is detected at a distance of ≤5m and a relative speed of ≥15km / h, it is determined to be a pre-collision state and the capacitor 85 is charged to 300V in advance. Under normal conditions, the capacitor is in a half-charged state.

[0119] Collision signal confirmation: After the in-vehicle computer sends a collision trigger signal, the controller 10 immediately outputs the same execution current as in Example 3, triggering the electronically controlled valve 8.

[0120] Diaphragm rupture and airbag collapse: The steps are the same as in Example 3, but since the capacitor charging has been completed in the pre-collision stage, the time from signal reception to valve opening is shortened to 1 microsecond, and the total airbag collapse time is reduced to 6 milliseconds.

[0121] The optimized control method based on pre-collision detection has the following process parameters:

[0122] The distance and speed thresholds for pre-collision detection can be adjusted according to the vehicle's braking performance. In this embodiment, they are set to 5m / 15km / h, balancing false triggering and response speed.

[0123] Capacitor 85 remains fully charged during the pre-collision phase to avoid delays caused by temporary charging, while an overvoltage protection circuit prevents damage to components from prolonged full charging.

[0124] This embodiment uses an optimized control method based on pre-collision detection, which further shortens the response time of airbag collapse through the pre-collision detection mechanism, making it particularly suitable for high-speed collision scenarios.

[0125] Test data shows that when the collision speed is 60km / h, the neck pillow collapse time is reduced by 30% compared with Example 3, and the peak impact force on the neck is reduced by 45%, effectively improving the safety protection performance.

[0126] In addition, the pre-collision charging strategy does not increase power consumption during normal driving and is activated only when a potential collision risk is detected, thus combining energy saving and safety.

[0127] Example 6: Application of safety neck pillows in car seats

[0128] In this embodiment, the safety neck pillow 3 is integrated into the car seat 1, specifically installed below the headrest 2. The structure of the safety neck pillow 3 is the same as in Embodiment 1, including an outer skin 4, filling material 5, airbag 6, air tube 7, electronically controlled valve 8, vacuum bottle 9, and controller 10. The controller 10 is connected to the vehicle computer and receives collision signals in real time.

[0129] Working principle or operation method:

[0130] When the vehicle is in motion, the safety neck pillow 3 inflates normally, providing support for the occupant's neck. In the event of a collision, the vehicle's computer sends a signal to the controller 10, triggering the electronically controlled valve 8 to open, and the airbag 6 rapidly deflates. The reduced size of the neck pillow avoids rigid contact between the occupant's neck and the pillow during a whiplash, thus lowering the risk of injury.

[0131] This embodiment combines a safety neck pillow with a car seat, solving the problem that traditional neck pillows cannot balance comfort and safety. Through an active crumple zone design, it significantly improves neck protection for occupants during a collision while maintaining comfort for everyday use.

[0132] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0133] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

Claims

1. A safety neck pillow, characterized in that, include: The neck pillow body (3) has an air bladder (6) inside. The air bladder (6) is filled with air to maintain the volume of the neck pillow and provide neck support. The air bladder (6) is connected to an electrically controlled valve (8) through an air tube (7). The electrically controlled valve (8) is connected to a vacuum bottle (9) that maintains a vacuum negative pressure state. The controller (10) is used to receive the collision trigger signal sent by the in-vehicle computer and output the execution current to the electronically controlled valve (8) to control its switching state; When the in-vehicle computer determines that there is a risk of a forward collision, the controller (10) triggers the electronically controlled valve (8) to open, so that the airbag (6) is connected to the vacuum bottle (9). The airbag (6) collapses instantly under the vacuum negative pressure to buffer the impact on the neck.

2. The safety neck pillow according to claim 1, characterized in that, The neck pillow body (3) includes an outer skin (4) and a filling material (5). The air bladder (6) is located inside the outer skin (4) and supports the neck when inflated. The filling material (5) fills the gap between the outer skin (4) and the air bladder (6).

3. The safety neck pillow according to claim 1, characterized in that, The airbag (6) is filled with air at 1 atmosphere under normal conditions.

4. The safety neck pillow according to claim 1, characterized in that, The electrically controlled valve (8) includes: The valve body (81) has a tubular structure; A diaphragm (82) is placed inside the valve body (81) to isolate the gas flow on both sides of the valve body (81). An explosive wire (84) is installed on the diaphragm (82). The explosive wire (84) is connected to a capacitor (85) and a thyristor (86) through an electrode (83) to form a charging and discharging circuit.

5. The safety neck pillow according to claim 4, characterized in that, The electrically controlled valve (8) is normally closed, and opens when it receives the execution current, with a conduction time of several microseconds.

6. The safety neck pillow according to claim 1, characterized in that, The controller (10) receives the collision signal through the vehicle computer and outputs the execution current to the electronically controlled valve (8) after receiving the signal.

7. A control method for a safety neck pillow, characterized in that, Includes the following steps: The vehicle collision signal is received through the controller (10); The controller (10) outputs an execution current to the electric valve (8), which energizes the explosive wire (84) and breaks the diaphragm (82); The airbag (6) is connected to the vacuum bottle (9) through the air tube (7) and collapses rapidly under the vacuum negative pressure.

8. The control method according to claim 7, characterized in that, The plasma generated when the explosive wire (84) is energized breaks the diaphragm (82) within microseconds.

9. A car seat, characterized in that, Includes a safety neck pillow (3) as described in any one of claims 1-6, wherein the safety neck pillow (3) is installed below the headrest (2) of the car seat (1).

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