Seat and method for controlling the same

Abstract

The application provides a seat and a control method thereof. The seat comprises a backrest framework, a headrest framework, a rotating mechanism and a locking mechanism. The rotating mechanism and the headrest framework are located at the top end of the backrest framework, and the headrest framework is connected with the backrest framework through the rotating mechanism. The locking mechanism is movably connected with the rotating mechanism. The locking mechanism is used to unlock the rotating mechanism when the speed difference of the seat is greater than or equal to a preset threshold within a preset time period, so that the headrest framework is rotatably connected with the backrest framework. The locking mechanism is also used to lock the rotating mechanism when the speed difference of the seat is less than the preset threshold within the preset time period, so that the headrest framework is fixedly connected with the backrest framework. The seat provided by the application can solve the problem that the neck of a passenger is injured when a vehicle is subjected to high-speed collision or sudden stop.

Description

Technical Field

[0001] This invention relates to the field of seating technology, and more particularly to a seating system and its control method. Background Technology

[0002] Typically, integrated seats are designed to protect the occupant's neck during sudden stops by tilting the headrest forward. This brings the headrest closer to the occupant's head, providing support during an accident and allowing the head and neck to rebound simultaneously. The headrest absorbs the impact force, maintaining the physiological curve of the head, neck, and shoulders throughout the entire process, thus reducing the probability of neck injury.

[0003] Typically, the headrest and backrest of a one-piece seat are fixedly connected. In the event of a low-speed (generally less than 30 km / h) collision or sudden stop, the one-piece seat will protect the occupant's neck.

[0004] However, in the event of a high-speed (greater than 30 km / h) collision or sudden stop, the occupant in the seat experiences significant inertia. Under the influence of this inertial force, the occupant's upper torso, buttocks, and thighs rapidly move towards the seat back, causing the upper torso to quickly compress against the seat back. This is accompanied by a violent upward thrust of the upper torso and buttocks along the seat back, resulting in a significant impact force on the head. The one-piece headrest, tilted forward and positioned above the occupant's head, prevents this upward thrust, leading to a substantial impact force on the occupant's neck and causing injury. Summary of the Invention

[0005] This application provides a seat and its control method to solve the problem of neck injury to occupants caused by existing seats when a vehicle experiences a high-speed collision or sudden stop.

[0006] This application provides a seat, including a backrest frame, a headrest frame, a rotating mechanism, and a locking mechanism. The rotating mechanism and the headrest frame are both located at the top of the backrest frame, and the headrest frame is connected to the backrest frame via the rotating mechanism.

[0007] The locking mechanism is movably connected to the rotating mechanism. The locking mechanism is used to unlock the rotating mechanism when the speed difference of the seat within a preset time period is greater than or equal to a preset threshold, thereby rotating the headrest frame and the backrest frame together. The locking mechanism is also used to lock the rotating mechanism when the speed difference of the seat within a preset time period is less than the preset threshold, thereby fixing the headrest frame and the backrest frame together.

[0008] By setting a locking mechanism and a rotating mechanism, the rotating mechanism is unlocked when the speed difference of the seat within a preset time period is greater than or equal to a preset threshold, allowing the headrest frame to rotate and connect with the backrest frame. When the speed difference of the seat within the preset time period is less than the preset threshold, the rotating mechanism is locked, fixing the headrest frame to the backrest frame. This allows the headrest to rotate relative to the backrest in the event of a collision or sudden stop at high speeds (greater than or equal to 30 km / h) in an occupant equipped with this seat, such as a vehicle. The rotatable headrest can mitigate the impact force on the occupant's head and protect their neck. Additionally, in the event of a collision or sudden stop at low speeds (less than 30 km / h) in an occupant equipped with this seat, the headrest can be fixed to the backrest, providing neck support and protecting the occupant from injury.

[0009] In one possible implementation, the preset threshold is greater than or equal to 30 km / h.

[0010] In one possible implementation, the seat further includes a status monitoring device and a controller; the status monitoring device is used to monitor the speed difference of the seat within the preset time period; the controller is connected to the status monitoring device and the locking mechanism respectively, and the controller is used to control the locking mechanism to unlock or lock the rotating mechanism according to the speed difference monitored by the status monitoring device.

[0011] By installing a status monitoring device, the status of the occupants equipped with the seat can be monitored in real time. By installing a controller and connecting it to the status monitoring device and locking mechanism, the controller can receive information from the status monitoring device and then use this information to control the locking mechanism, achieving automatic control of the locking and rotating mechanisms. This makes the occupants using the seat more intelligent and improves the user experience.

[0012] In one possible implementation, the rotating mechanism includes a housing and a rotating part; wherein the rotating part is located inside the housing, the housing is fixedly connected to the backrest frame, and the rotating part is fixedly connected to the headrest frame; the rotating part is movably connected to the housing so that when the rotating mechanism is unlocked, the headrest frame is rotatably connected to the backrest frame via the rotating part.

[0013] By configuring the rotating mechanism as a structure including a housing and a rotating part, the rotating mechanism can be connected to the backrest frame via the housing and to the headrest frame via the rotating part. By movably connecting the rotating part and the housing, the headrest frame and backrest frame can be rotatably connected when the rotating mechanism is unlocked. Configuring the rotating mechanism as a structure including a housing and a rotating part simplifies its structure, thereby reducing the cost of the seat.

[0014] In one possible implementation, the rotating part includes a V-shaped elastic element; wherein the V-shaped elastic element includes a first stop arm and a second stop arm, and a rotation center is provided at the connection between the first stop arm and the second stop arm, and both the first stop arm and the second stop arm can rotate around the rotation center; the housing is provided with a cavity that cooperates with the V-shaped elastic element, and the first stop arm and the second stop arm respectively abut against the two inner walls of the cavity; one of the first stop arm and the second stop arm is fixedly connected to the headrest frame.

[0015] By incorporating a V-shaped elastic element into the rotating part, the structure of the rotating part can be simplified, assembly difficulty reduced, and costs lowered. A rotation center is set at the connection between the first and second stop arms, and both the first and second stop arms are rotatable around this center. Thus, by compressing the first and / or second stop arms, i.e., changing the distance between them, the first and second stop arms can be rotated relative to each other. Since the housing of the rotating mechanism is fixedly connected to the backrest frame, and the headrest frame is fixedly connected to one of the first and second stop arms, when the headrest frame is subjected to impact, it can compress the first or second stop arm connected to the headrest frame, thereby causing one of the first and second stop arms to rotate relative to the other, achieving a rotational connection between the headrest frame and the backrest frame.

[0016] In one possible implementation, the V-shaped elastic element is a V-shaped spring.

[0017] By replacing the V-shaped elastic element with a V-shaped spring, the structure of the V-shaped elastic element can be simplified and the cost reduced. Furthermore, the spring can automatically return to its original shape after the external force is removed. This ensures that the headrest frame can automatically return to its original shape after being deformed by impact, thus maintaining the headrest's function of protecting the occupant's neck.

[0018] In one possible implementation, the locking mechanism includes a locking part; wherein, when the rotating mechanism is locked, the locking part is locked to the rotating part; and when the rotating mechanism is unlocked, the locking part is separated from the rotating part.

[0019] By incorporating a locking mechanism, the locking or unlocking of the rotating mechanism can be controlled solely by controlling the locking mechanism. This results in a simple structure and easy-to-operate control method, reducing the cost of the seat.

[0020] In one possible implementation, the locking mechanism further includes a driving part; wherein the driving part is connected to the locking part, and the driving part is used to drive the locking part to move away from the rotating part so as to separate the locking part from the rotating part; the driving part is also used to drive the locking part to move closer to the rotating part so as to lock the locking part to the rotating part.

[0021] By setting a driving part, the locking part can be driven to be in different positions, thereby unlocking or locking the rotating part.

[0022] In one possible implementation, the driving part includes an electromagnetic coil and a spring; wherein, the electromagnetic coil and the locking part are spaced apart along the axial direction of the locking part; the locking part includes a fixed end and a telescopic end, and the spring is sleeved on the outside of the fixed end of the locking part; one end of the spring abuts against the side of the fixed end near the telescopic end, and the other end abuts against the electromagnetic coil; when the electromagnetic coil is energized, it attracts the locking part to move towards the electromagnetic coil, so that the telescopic end of the locking part is separated from the rotating part; when the electromagnetic coil is de-energized, the spring drives the locking part to move away from the electromagnetic coil, so that the telescopic end of the locking part is locked and connected to the rotating part.

[0023] By incorporating an electromagnetic coil and a spring into the drive unit, with the spring positioned between the locking part and the electromagnetic coil, the locking part can be attracted and the spring compressed when the electromagnetic coil is energized, disengaging the locking part from the rotating part and thus unlocking the rotating mechanism. When the electromagnetic coil is de-energized, the spring, relying on its own restoring force, drives the locking part to lock into the rotating part. Furthermore, including both an electromagnetic coil and a spring in the drive unit simplifies its structure, thereby reducing the cost of the seat.

[0024] In one possible implementation, the locking mechanism further includes a housing and a cover plate; wherein the driving part and the locking part are both disposed inside the housing, and the end of the electromagnetic coil opposite to the locking part abuts against the interior of the housing; the cover plate covers one end of the housing and is disposed near the telescopic end of the locking part; the cover plate is provided with a through hole structure for the locking part to pass through.

[0025] By incorporating a housing and a cover plate into the locking mechanism, the driving and locking components can be concealed within the housing, thus protecting them and extending the service life of the locking mechanism. A through-hole structure on the cover plate allows the locking component to extend out of the housing and engage with the rotating component.

[0026] A second aspect of this application provides a seat control method applied to any of the seats described above, the seat comprising a backrest frame, a headrest frame, a rotating mechanism, and a locking mechanism. The rotating mechanism and the headrest frame are both located at the top of the backrest frame, and the headrest frame is connected to the backrest frame via the rotating mechanism.

[0027] The control method includes:

[0028] Obtain the speed difference of the preset seat within a preset time difference;

[0029] Determine whether the speed difference is greater than or equal to a preset threshold;

[0030] If the speed difference is greater than or equal to a preset threshold, the locking mechanism is controlled to unlock the rotating mechanism, so that the headrest frame and the backrest frame are rotated and connected.

[0031] If the speed difference is less than a preset threshold, the locking mechanism is controlled to lock the rotating mechanism, so that the headrest frame and the backrest frame are fixedly connected.

[0032] The seat control method provided in this application unlocks the rotating mechanism by controlling the locking mechanism when the speed difference within a preset time period is greater than or equal to a preset threshold, allowing the headrest frame to rotate and connect with the backrest frame. Conversely, when the speed difference within a preset time period is less than the preset threshold, the locking mechanism locks the rotating mechanism, fixing the headrest frame to the backrest frame. This allows the headrest to rotate relative to the backrest in the event of a collision or sudden stop at high speeds (greater than or equal to 30 km / h), mitigating the impact on the occupant's head and protecting their neck. Furthermore, in the event of a collision or sudden stop at low speeds (less than 30 km / h), the headrest can be fixed to the backrest, providing neck support and protecting the occupant from injury.

[0033] In one possible implementation, the preset threshold is greater than or equal to 30 km / h. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a structural schematic diagram of a seat provided in an embodiment of this application;

[0036] Figure 2 This is a schematic diagram illustrating the occupant's position in a seat during normal vehicle operation and during a high-speed head-on collision.

[0037] Figure 3 This application provides a schematic diagram illustrating the changing state of a seat during a high-speed vehicle collision or sudden stop.

[0038] Figure 4 This is a partial frame diagram of a seat provided in an embodiment of this application;

[0039] Figure 5 An exploded structural diagram of a seat rotation mechanism and headrest frame provided for embodiments of this application;

[0040] Figure 6 A schematic diagram of the connection structure between the rotating mechanism of a seat and the headrest frame provided in an embodiment of this application;

[0041] Figure 7 An exploded view of a seat locking mechanism provided in an embodiment of this application;

[0042] Figure 8 A cross-sectional structural diagram of a seat rotation mechanism when locked, provided for an embodiment of this application;

[0043] Figure 9 A cross-sectional structural diagram of a seat rotation mechanism when it is unlocked, as provided in an embodiment of this application;

[0044] Figure 10 This is a schematic flowchart of a seat control method provided in an embodiment of this application.

[0045] Explanation of reference numerals in the attached figures:

[0046] 1-Seat; 2-Headrest; 3-Backrest;

[0047] 4-Occupants;

[0048] 100 - Seat; 110 - Seat cushion frame; 120 - Backrest frame;

[0049] 130 - Headrest frame; 131 - End; 140 - Rotation mechanism;

[0050] 141-Rotating part; 1411-First stop arm; 1412-Second stop arm;

[0051] 1413 - Rotation center; 1414 - Snap fastener; 142 - Housing;

[0052] 1421 - First housing; 1422 - Second housing; 1423 - Cavity;

[0053] 1424 - Bolt; 1425 - First through hole; 1426 - Second through hole;

[0054] 1427 - Opening; 150 - Locking mechanism; 151 - Housing;

[0055] 1511 - First outer casing; 1512 - Second outer casing; 1513 - Receiving cavity;

[0056] 152-Cover plate; 1521-Through hole structure; 153-Locking part;

[0057] 1531 - Fixed end; 1532 - Telescopic end; 1533 - Protruding edge;

[0058] 154 - Drive unit; 1541 - Electromagnetic coil; 1542 - Spring;

[0059] 155 - Connector; 160 - Controller; 170 - Status monitoring device. Detailed Implementation

[0060] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0061] The following describes in detail the seats and vehicles provided in the embodiments of this application with reference to the accompanying drawings.

[0062] Figure 1 This is a structural schematic diagram of a seat provided in an embodiment of this application.

[0063] This application provides a seat 100, such as Figure 1As shown, the seat 100 may include a seat cushion frame 110, a backrest frame 120, a headrest frame 130, a rotating mechanism 140, and a locking mechanism 150. The seat cushion frame 110 is connected to the backrest frame 120, and both the rotating mechanism 140 and the headrest frame 130 are located at the top of the backrest frame 120, with the headrest frame 130 connected to the backrest frame 120 via the rotating mechanism 140.

[0064] For example, the end of the headrest frame 130 connected to the backrest frame 120 includes two separately disposed ends 131. Two rotating mechanisms 140 are respectively disposed at the two ends 131 of the headrest frame 130. That is, each end 131 of the headrest frame 130 corresponds to one rotating mechanism 140. Among them, one side of one of the two rotating mechanisms 140 is provided with a locking mechanism 150.

[0065] In this embodiment, the locking mechanism 150 is movably connected to the rotating mechanism 140. The locking mechanism 150 is used to unlock the rotating mechanism 140 when the speed difference of the seat 100 within a preset time period is greater than or equal to a preset threshold, i.e., during a high-speed collision or emergency stop. The locking mechanism 150 is also used to lock the rotating mechanism 140 when the speed difference of the seat 100 within a preset time period is less than the preset threshold, i.e., during normal driving, ground-speed collision, or emergency stop.

[0066] When the rotating mechanism 140 is in the unlocked state, the headrest frame 130 is rotatably connected to the backrest frame 120 via the rotating mechanism 140 (see...). Figure 9 (As shown). When the rotating mechanism 140 is in the locked state, the headrest frame 130 is fixedly connected to the backrest frame 120 via the rotating mechanism 140 (see...). Figure 8 (As shown).

[0067] It should be noted that a locking mechanism 150 can be provided on one side of each rotating mechanism 140. In this embodiment, the number of locking mechanisms 150 is not further limited.

[0068] It should be noted that, in the embodiments of this application, low-speed collision or sudden stop refers to a collision or sudden stop where the speed of the object being hit or stopped is low, or the impact force is small, and the speed difference is small in a short period of time during the collision or sudden stop. In this case, the inertia of the occupants is small. High-speed collision or sudden stop refers to a collision or sudden stop where the speed of the object is high, and the speed difference is large in a short period of time during the collision or sudden stop (that is, the acceleration is large).

[0069] In some embodiments, the preset threshold may be greater than or equal to 30 km / h.

[0070] Of course, in some embodiments, the preset threshold can also be other values, such as a preset threshold greater than or equal to 10km / h, 15km / h, 20km / h, 40km / h, 50km / h, etc. The specific value of the preset threshold is not further limited in the embodiments of this application.

[0071] It should be noted that the preset time period can be 0.1s, 0.5s, 1s, 1.5s, 2s, or 3s, etc. In this embodiment, the specific value of the preset time period is not further limited, as long as it is relatively short.

[0072] It should be noted that the passenger vehicle mentioned in this application can be a ground-based passenger vehicle with wheels, or a mobile passenger vehicle such as an aircraft or ship that can be equipped with a seat 100 and moves off the ground.

[0073] The following explanation uses vehicles as the basis for describing passenger transport.

[0074] like Figure 2 As shown, when the integrated seat 1 of the vehicle experiences a high-speed (greater than 30 km / h) head-on collision, compared to normal driving, the occupant 4's lower legs will swing backward, and the occupant 4's upper torso, buttocks, and thighs will move rapidly towards the seat back 3 under the influence of inertia. The occupant 4's upper torso will quickly compress the seat back 3, accompanied by a violent upward impact along the seat back 1. Because the headrest 2 of the integrated seat 1 is tilted forward and is above the occupant 4's head, the head will hit the headrest 2 under the huge upward impact force of the occupant 4's upper torso, which will injure the occupant 4's neck.

[0075] In this embodiment, a locking mechanism 150 and a rotating mechanism 140 are provided. When the speed difference of the seat 100 within a preset time period is greater than or equal to a preset threshold, the rotating mechanism 140 is unlocked, allowing the headrest frame 130 to be rotatably connected to the backrest frame 120. When the speed difference of the seat 100 within the preset time period is less than the preset threshold, the rotating mechanism 140 is locked, fixing the headrest frame 130 to the backrest frame 120. This allows the headrest to rotate relative to the backrest in the event of a collision or sudden stop at high speeds (e.g., speeds greater than or equal to 30 km / h) in an occupant equipped with the seat 100, such as a vehicle. The rotatable headrest can mitigate the impact on the occupant's head and protect their neck. Furthermore, in the event of a collision or sudden stop at low speeds (e.g., speeds less than 30 km / h) in an occupant equipped with the seat 100, such as a vehicle, the headrest can be fixed to the backrest. The fixed headrest can support the occupant's neck and protect it from injury.

[0076] It should be noted that in this embodiment, the specific speeds for high-speed and low-speed are not limited. They are related to factors such as vehicle type, and can be set according to specific circumstances.

[0077] In some embodiments, the seat 100 may further include a status monitoring device 170 and a controller 160 (see [link]). Figure 4 (As shown). The status monitoring device 170 is used to monitor the speed difference of the seat 100 within a preset time period. The controller 160 is connected to both the status monitoring device 170 and the locking mechanism 150. The controller 160 is used to control the locking mechanism 150 to unlock or lock the rotating mechanism 140 based on the speed difference monitored by the status monitoring device 170.

[0078] By setting up a status monitoring device 170, the status of the vehicle equipped with the seat 100 can be monitored in real time. By setting up a controller 160 and connecting the controller 160 to the status monitoring device 170 and the locking structure, the controller 160 can receive the information monitored by the status monitoring device 170 and then control the locking structure based on this information to achieve automatic control of the locking mechanism 150 and the rotating mechanism 140. This improves the intelligence of the occupants using the seat 100 and enhances the user experience.

[0079] In one possible implementation, the state monitoring device 170 may include an acquisition module, a calculation module, and a judgment module. The acquisition module acquires the real-time speed of the seat 100, the calculation module calculates the speed difference over a preset time period, and the judgment module determines whether the speed difference exceeds a preset threshold.

[0080] The following describes the changes in the state of seat 100 when the vehicle experiences a high-speed collision or sudden stop.

[0081] When a frontal collision occurs, the acquisition module in the state monitoring device 170 acquires the real-time speed of the seat or vehicle and sends it to the calculation module. The calculation module calculates the speed difference over a preset time period, and the judgment module determines whether the speed difference is greater than or equal to a preset threshold. If the speed difference is greater than or equal to the preset threshold, the controller 160 controls the locking mechanism 150 to unlock the rotating mechanism 140, allowing the headrest frame 130 and the backrest frame 120 to be rotatably connected. This way, when the occupant's head presses against the headrest of the seat 100, the headrest can rotate relative to the backrest, thereby mitigating the impact on the occupant's head and protecting the occupant's neck from injury.

[0082] It should be noted that velocity is a vector quantity. For example, the acquisition module can be a velocity sensor.

[0083] It should be noted that the speed difference within a preset time period is similar to acceleration. Therefore, the acceleration of the seat can also be used to determine whether the occupant using the seat 100 is in a high-speed collision or emergency stop state. In other words, the state monitoring device 170 can be an acceleration sensor, which is used to monitor the acceleration information of the seat 100.

[0084] It should be noted that the condition monitoring device 170 may also include other devices, such as pressure sensors. In this embodiment, the specific structure of the condition monitoring device 170 is not further limited.

[0085] It should be noted that the conditions for determining whether a vehicle has experienced a high-speed collision or sudden stop include, but are not limited to, the speed difference within a preset time period. In some embodiments, other parameters may also be used as conditions for determining whether a vehicle has experienced a high-speed collision or sudden stop, such as the pressure difference of the seat back within a preset time period. In the embodiments of this application, the conditions for determining whether a vehicle has experienced a high-speed collision or sudden stop are not further limited.

[0086] For example, the controller 160 and the status monitoring device 170 can be connected wirelessly or via a wired connection. In this embodiment, the connection method between the controller 160 and the status monitoring device 170 is not further limited. Similarly, the controller 160 and the locking mechanism 150 can be connected wirelessly or via a wired connection. In this embodiment, the connection method between the controller 160 and the locking mechanism 150 is not further limited. Furthermore, the controller 160 and the status monitoring device 170 can be mounted on the seat 100 or in other locations within the vehicle. In this embodiment, the mounting location of the controller 160 and the status monitoring device 170 is not further limited, as long as they are connected to the seat 100.

[0087] The rotating mechanism 140 and the locking mechanism 150 will be described in detail below with reference to the accompanying drawings.

[0088] like Figure 5 As shown, the rotating mechanism 140 may include a housing 142 and a rotating part 141. The rotating part 141 is located inside the housing 142, the housing 142 is fixedly connected to the backrest frame 120, and the rotating part 141 is fixedly connected to the headrest frame 130. The rotating part 141 is movably connected to the housing 142 so that when the rotating mechanism 140 is unlocked, the headrest frame 130 is rotatably connected to the backrest frame 120 through the rotating part 141.

[0089] By configuring the rotating mechanism 140 to include a housing 142 and a rotating part 141, the rotating mechanism 140 can be connected to the backrest frame 120 via the housing 142 and to the headrest frame 130 via the rotating part 141. By movably connecting the rotating part 141 and the housing 142, the headrest frame 130 and the backrest frame 120 can be rotatably connected when the rotating mechanism 140 is unlocked. By configuring the rotating mechanism 140 to include a housing 142 and a rotating part 141, the structure of the rotating mechanism 140 can be simplified, thereby reducing the cost of the seat 100.

[0090] For example, the housing 142 may include a first housing 1421 and a second housing 1422, wherein the first housing 1421 is fixedly connected to the backrest frame 120. For example, the first housing 1421 and the backrest frame 120 are connected by welding.

[0091] The second housing 1422 is disposed on the side of the rotating mechanism 140 connected to the locking structure, and the second housing 1422 is fixedly connected to the first housing 1421. For example, the second housing 1422 and the first housing 1421 are connected by bolts 1424. Of course, in other embodiments, the second housing 1422 and the first housing 1421 can also be connected by other methods, such as welding, riveting, or bonding. In this embodiment, the connection method between the first housing 1421 and the second housing 1422 is not further limited.

[0092] like Figure 5 As shown, the rotating part 141 includes a V-shaped elastic element. The V-shaped elastic element includes a first stop arm 1411 and a second stop arm 1412. A rotation center 1413 is provided at the connection between the first stop arm 1411 and the second stop arm 1412. Both the first stop arm 1411 and the second stop arm 1412 can rotate around the rotation center 1413.

[0093] like Figure 6 As shown, the housing 142 has a cavity 1423 that mates with a V-shaped elastic element. The first stop arm 1411 and the second stop arm 1412 abut against the two inner walls of the cavity 1423, respectively. One of the first stop arm 1411 and the second stop arm 1412 is fixedly connected to the headrest frame 130. For example, the top end of the first stop arm 1411 is provided with a buckle 1414 that connects to the headrest frame 130. The headrest frame 130 is engaged with the buckle 1414 and fixedly connected to the first stop arm 1411.

[0094] For example, the V-shaped elastic element is a V-shaped spring. The rotation center 1413 is the helix of the V-shaped spring, and the first stop arm 1411 and the second stop arm 1412 are rotatable relative to the helix of the V-shaped spring. The end 131 of the headrest frame 130 is inserted into the helix of the V-shaped spring. The first housing 1421 and the second housing 1422 are also provided with a first through hole 1425 that cooperates with the headrest frame. The two ends of the end 131 of the headrest frame 130 pass through the first through hole 1425 of the first housing 1421 and the second housing 1422 respectively, and are movably connected to the first through hole 1425, so that the two ends of the end 131 of the headrest frame 130 are movably connected to the first housing 1421 and the second housing 1422.

[0095] In addition, an opening 1427 is provided at the top of the first housing 1421 for the headrest frame 130 to move. The headrest frame 130 is movably connected to the opening 1427, and the headrest frame 130 can move along the side wall of the opening 1427.

[0096] It should be noted that the headrest frame 130 moves in the direction from the first stop arm 1411 to the second stop arm 1412 of the V-shaped elastic member. For example, the opening 1427 is an elongated oval hole-like structure extending along the direction from the first stop arm 1411 to the second stop arm 1412.

[0097] By incorporating a V-shaped elastic element into the rotating part 141, the structure of the rotating part 141 can be simplified, assembly difficulty reduced, and costs lowered. An opening 1427 is provided in the first housing 1421 to allow space for the headrest frame 130 to move within a defined space, preventing excessive movement of the headrest frame 130 and thus avoiding damage to the seat 100.

[0098] By setting a rotation center 1413 at the connection between the first stop arm 1411 and the second stop arm 1412, and arranging both the first stop arm 1411 and the second stop arm 1412 to rotate around the rotation center 1413, the first stop arm 1411 and / or the second stop arm 1412 can be rotated relative to each other by compressing the first stop arm 1411 and / or the second stop arm 1412, i.e., changing the distance between the first stop arm 1411 and the second stop arm 1412. Since the housing 142 of the rotating mechanism 140 is fixedly connected to the backrest frame 120, and the headrest frame 130 is fixedly connected to one of the first stop arms 1411 and the second stop arm 1412, when the headrest frame 130 is subjected to an impact force, the first stop arm 1411 or the second stop arm 1412 connected to the headrest frame 130 can be compressed, thereby causing one of the first stop arms 1411 and the second stop arm 1412 to rotate relative to the other, thus realizing the rotational connection between the headrest frame 130 and the backrest frame 120.

[0099] By using a V-shaped elastic element as a V-shaped spring, the structure of the V-shaped elastic element can be simplified and the cost reduced. Furthermore, the spring 1542 can automatically return to its original shape after the external force is removed. This ensures that the headrest frame 130 can automatically return to its original shape after being deformed by an impact force, thus maintaining the function of protecting the occupant's neck.

[0100] like Figure 7 As shown, the locking mechanism 150 may include a housing 151, a cover plate 152, a locking part 153, and a driving part 154. The driving part 154 may include an electromagnetic coil 1541 and a spring 1542. Both the driving part 154 and the locking part 153 are disposed inside the housing 151. By including the housing 151 and the cover plate 152 in the locking mechanism 150, the driving part 154 and the locking part 153 can be concealed inside the housing 151, thereby protecting the driving part 154 and the locking part 153 and extending the service life of the locking mechanism 150. By providing a through hole structure 1521 on the cover plate 152, the locking part 153 can extend out of the housing 151 and lock into the rotating part 141.

[0101] For example, the housing 151 includes a first housing 1511 and a second housing 1512, wherein a receiving cavity 1513 is formed between the first housing 1511 and the second housing 1512 (see Figure 8 (As shown). The first outer shell 1511 can be fixedly connected to the backrest frame 120 by welding. The first outer shell 1511 and the second outer shell 1512 are fixedly connected by a connector 155, wherein the connector 155 can be a bolt.

[0102] Of course, in other embodiments, the first outer shell 1511 and the backrest frame 120 can also be fixedly connected by other means, such as riveting, bonding, etc. In this embodiment, the connection method between the first outer shell 1511 and the backrest frame 120 is not further limited. Similarly, in other embodiments, the first shell 1421 and the second shell 1422 can also be connected by other means, such as welding, riveting, etc. The connection method between the first shell 1421 and the second shell 1422 is not further limited.

[0103] like Figure 8As shown, an electromagnetic coil 1541 and a locking portion 153 are spaced apart along the axial direction of the locking portion 153. The locking portion 153 includes a fixed end 1531 and a telescopic end 1532. A protruding edge 1533 is provided at the connection between the fixed end 1531 and the telescopic end 1532. The protruding edge 1533 protrudes outward along the outer wall of the fixed end 1531. A spring 1542 is sleeved on the outside of the fixed end 1531 of the locking portion 153. One end of the spring 1542 abuts against the side of the protruding edge 1533 on the fixed end 1531 that is away from the telescopic end 1532, and the other end abuts against the electromagnetic coil 1541. The end of the electromagnetic coil 1541 that is away from the locking portion 153 can abut against the inner wall of the outer casing 151. A cover plate 152 is provided on one end of the outer casing 151 and is located near the telescopic end 1532 of the locking portion 153. The cover plate 152 is provided with a through hole structure 1521 for the locking part 153 to pass through, and the telescopic end 1532 of the locking part 153 is movably connected to the through hole structure 1521.

[0104] It should be noted that in some embodiments, the locking part 153 may also have other shapes. For example, the locking part 153 may have a structure including a fixed end 1531 and a telescopic end 1532, without a protruding edge 1533, and the spring 1542 may be disposed between the fixed end 1531 and the electromagnetic coil 1541 of the locking part 153. In the embodiments of this application, the specific structure of the locking part 153 is not further limited.

[0105] See also Figure 5 As shown, the second housing 1422 of the rotating mechanism 140 is also provided with a second through hole 1426 for the telescopic end 1532 of the locking part 153 to pass through. The locking part 153 can enter the housing 142 of the rotating mechanism 140 through the second through hole 1426 and lock with the first stop arm 1411 or the second stop arm 1412 of the V-shaped elastic member (e.g., Figure 8 (As shown).

[0106] like Figure 8 As shown, when the rotating mechanism 140 is locked, the locking part 153 is locked to the rotating part 141. Figure 9 As shown, when the rotating mechanism 140 is unlocked, the locking part 153 separates from the rotating part 141. The change in the headrest frame when the seat is impacted can be referenced... Figure 3 As shown, the headrest frame changes from the implemented position to the position indicated by the dashed line. Of course, Figure 3 The image is for illustrative purposes only, illustrating that the headrest frame rotates backward relative to the backrest frame, and does not represent the actual changes.

[0107] For example, the electromagnetic coil 1541 is connected to a controller, which controls the energization and de-energization of the electromagnetic coil 1541. Specifically, when the speed difference of the seat 100 within a preset time period is greater than or equal to a preset threshold, i.e., during a high-speed collision or sudden stop, the electromagnetic coil 1541 is energized to generate a magnetic force, attracting the locking part 153 to move closer to the electromagnetic coil 1541, thereby separating the telescopic end 1532 of the locking part 153 from the rotating part 141 (e.g., ...). Figure 9 (As shown).

[0108] When the speed difference of seat 100 is less than a preset threshold within a preset time period, that is, during normal driving, ground speed collision, or emergency stop, the electromagnetic coil 1541 is de-energized, the magnetic force of the electromagnetic coil 1541 disappears, and the restoring force of the spring 1542 drives the locking part 153 to move away from the electromagnetic coil 1541, so that the telescopic end 1532 of the locking part 153 extends out from the through hole structure 1521 on the cover plate 152 and enters the rotating mechanism 140 through the second through hole 1426 of the second housing 1422, and locks with the first stop arm 1411 of the rotating part 141 (e.g., Figure 8 (As shown).

[0109] In some embodiments, the locking part 153 can be made of metal, and when the electromagnetic coil 1541 is energized, it generates a magnetic force that can attract the locking part 153.

[0110] It should be noted that the driving part 154 in this embodiment includes, but is not limited to, the electromagnetic coil 1541 and spring 1542 described above. In other embodiments, the driving part 154 may also have other structures. In this embodiment, as long as the driving part 154 is connected to the locking part 153, the driving part 154 can drive the locking part 153 to move away from the rotating part 141, so that the locking part 153 is separated from the rotating part 141. The driving part 154 can also drive the locking part 153 to move closer to the rotating part 141, so that the locking part 153 is locked and connected to the rotating part 141. In this embodiment, the specific structure of the driving part 154 is not further limited.

[0111] By providing a locking part 153, the locking or unlocking of the rotating mechanism 140 can be controlled simply by controlling the locking part 153. This results in a simple structure and easy-to-operate control method, reducing the cost of the seat 100. By providing a driving part 154, the locking part 153 can be driven to different positions, thereby unlocking or locking the rotating part 141.

[0112] By including an electromagnetic coil 1541 and a spring 1542 in the drive unit 154, and placing the spring 1542 between the locking part 153 and the electromagnetic coil 1541, the locking part 153 can be attracted and the spring 1542 compressed when the electromagnetic coil 1541 is energized, thus separating the locking part 153 from the rotating part 141 and unlocking the rotating mechanism 140. When the electromagnetic coil 1541 is de-energized, the spring 1542 uses its own restoring force to drive the locking part 153 to lock into contact with the rotating part 141. Furthermore, including an electromagnetic coil 1541 and a spring 1542 in the drive unit 154 simplifies its structure and reduces the cost of the seat 100.

[0113] Of course, in other embodiments, the locking mechanism 150 and the rotating mechanism 140 can also have other structures. For example, the locking part 153 of the locking mechanism 150 can be a motor, and the rotating part 141 of the rotating mechanism 140 can be a gear structure. Therefore, the structure of the locking mechanism 150 and the rotating mechanism 140 is not further limited in this embodiment.

[0114] This application also provides a seat control method applied to the above-mentioned seat, which includes a backrest frame, a headrest frame, a rotating mechanism, and a locking mechanism. The rotating mechanism and the headrest frame are both located at the top of the backrest frame, and the headrest frame is connected to the backrest frame via the rotating mechanism.

[0115] like Figure 10 As shown, the seat control method includes:

[0116] S100: Obtain the speed difference of the preset seat within a preset time difference;

[0117] S200: Determine whether the speed difference is greater than or equal to a preset threshold;

[0118] S300 If the speed difference is greater than or equal to the preset threshold, the locking mechanism is controlled to unlock the rotating mechanism, so that the headrest frame and the backrest frame are rotated and connected.

[0119] S400 If the speed difference is less than the preset threshold, control the locking mechanism to lock the rotating mechanism, so that the headrest frame and the backrest frame are fixedly connected.

[0120] The seat control method provided in this application unlocks the rotating mechanism by controlling the locking mechanism when the speed difference within a preset time period is greater than or equal to a preset threshold, allowing the headrest frame to rotate and connect with the backrest frame. Conversely, when the speed difference within a preset time period is less than the preset threshold, the locking mechanism locks the rotating mechanism, fixing the headrest frame to the backrest frame. This allows the headrest to rotate relative to the backrest in the event of a collision or sudden stop at high speeds (greater than or equal to 30 km / h), mitigating the impact on the occupant's head and protecting their neck. Furthermore, in the event of a collision or sudden stop at low speeds (less than 30 km / h), the headrest can be fixed to the backrest, providing neck support and protecting the occupant from injury.

[0121] It should be noted that in some embodiments, the preset threshold may be greater than or equal to 30 km / h.

[0122] Of course, in some embodiments, the preset threshold can also be other values, such as a preset threshold greater than or equal to 10km / h, 15km / h, 20km / h, 40km / h, 50km / h, etc. The specific value of the preset threshold is not further limited in the embodiments of this application.

[0123] It should be noted that the preset time period can be 0.1s, 0.5s, 1s, 1.5s, 2s, or 3s, etc. In this embodiment, the specific value of the preset time period is not further limited, as long as it is relatively short.

[0124] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0125] In the description of this application, it should be understood that the terms “comprising” and “having” as used herein, and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are expressly listed, but may include other steps or units that are not expressly listed or that are inherent to such process, method, product, or apparatus.

[0126] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0127] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A type of seat, characterized in that, Includes backrest frame, headrest frame, rotating mechanism and locking mechanism; The rotating mechanism and the headrest frame are both located at the top of the backrest frame, and the headrest frame is connected to the backrest frame through the rotating mechanism. The locking mechanism is movably connected to the rotating mechanism; The locking mechanism is used to unlock the rotating mechanism when the speed difference of the seat is greater than or equal to a preset threshold within a preset time period, so that the headrest frame is rotatably connected to the backrest frame and the headrest frame rotates backward relative to the backrest frame. The locking mechanism is also used to lock the rotating mechanism when the speed difference of the seat is less than a preset threshold within a preset time period, so that the headrest frame and the backrest frame are fixedly connected. It also includes condition monitoring devices and controllers; The status monitoring device is used to monitor the speed difference of the seat within the preset time period; The controller is connected to the status monitoring device and the locking mechanism respectively. The controller is used to control the locking mechanism to unlock or lock the rotating mechanism according to the speed difference value monitored by the status monitoring device. The rotating mechanism includes a housing and a rotating part; wherein... The rotating part is located inside the housing, the housing is fixedly connected to the backrest frame, and the rotating part is fixedly connected to the headrest frame; The rotating part is movably connected to the housing so that when the rotating mechanism is unlocked, the headrest frame is rotatably connected to the backrest frame via the rotating part.

2. The seat according to claim 1, characterized in that, The rotating part includes a V-shaped elastic element; wherein... The V-shaped elastic element includes a first stop arm and a second stop arm. A rotation center is provided at the connection between the first stop arm and the second stop arm. Both the first stop arm and the second stop arm can rotate around the rotation center. The housing has a cavity that mates with the V-shaped elastic element, and the first stop arm and the second stop arm respectively abut against the two inner walls of the cavity; One of the first and second stop arms is fixedly connected to the headrest frame.

3. The seat according to claim 2, characterized in that, The V-shaped elastic element is a V-shaped spring.

4. The seat according to any one of claims 1-3, characterized in that, The locking mechanism includes a locking part; wherein... When the rotating mechanism is locked, the locking part is locked to the rotating part; When the rotating mechanism is unlocked, the locking part separates from the rotating part.

5. The seat according to claim 4, characterized in that, The locking mechanism further includes a drive unit; wherein... The driving part is connected to the locking part, and the driving part is used to drive the locking part to move away from the rotating part, so as to separate the locking part from the rotating part; The driving part is also used to drive the locking part to move closer to the rotating part, so that the locking part is locked and connected to the rotating part.

6. The seat according to claim 5, characterized in that, The driving unit includes an electromagnetic coil and a spring; wherein... The electromagnetic coil and the locking part are spaced apart along the axial direction of the locking part; The locking part includes a fixed end and a telescopic end, and the spring is sleeved on the outside of the fixed end of the locking part; One end of the spring abuts against the side of the fixed end near the telescopic end, and the other end abuts against the electromagnetic coil; When the electromagnetic coil is energized, it attracts the locking part to move closer to the electromagnetic coil, so that the telescopic end of the locking part is separated from the rotating part; When the electromagnetic coil is de-energized, the spring drives the locking part to move away from the electromagnetic coil, so that the telescopic end of the locking part is locked and connected with the rotating part.

7. The seat according to claim 6, characterized in that, The locking mechanism further includes a housing and a cover plate; wherein... Both the driving part and the locking part are disposed inside the housing, and the end of the electromagnetic coil opposite to the locking part abuts against the inside of the housing; The cover plate is disposed over one end of the outer casing and is located near the telescopic end of the locking part; The cover plate is provided with a through hole structure for the locking part to pass through.

8. A seat control method, applied to the seat according to any one of claims 1-7, characterized in that, The seat includes a backrest frame, a headrest frame, a rotating mechanism, and a locking mechanism; The rotating mechanism and the headrest frame are both located at the top of the backrest frame, and the headrest frame is connected to the backrest frame through the rotating mechanism. The control method includes: Obtain the speed difference of a preset seat within a preset time period; Determine whether the speed difference is greater than or equal to a preset threshold; If the speed difference is greater than or equal to a preset threshold, the locking mechanism is controlled to unlock the rotating mechanism, so that the headrest frame and the backrest frame are rotated and connected. If the speed difference is less than a preset threshold, the locking mechanism is controlled to lock the rotating mechanism, so that the headrest frame and the backrest frame are fixedly connected.

Images