Headrest automatic falling structure and vehicle

Abstract

The utility model belongs to the technical field of vehicle accessories, provide a headrest automatic falling structure and vehicle, automatic falling structure includes: guide sleeve subassembly, it is fixedly installed on the seat, includes guide sleeve, locking piece, it is movably set up on guide sleeve subassembly, has locking position and unlocking position, unlocking piece, it is movably set up on guide sleeve subassembly, unlocking piece and locking piece directly or indirectly cooperate, driving piece, set up in the seat inside, and with the support of headrest connection. Compared with prior art, the utility model through guide sleeve subassembly, locking piece, unlocking piece and driving piece's cooperation and match, realized the automatic falling function of headrest under specific working condition. The structure response sensitive, reliable operation, effectively solved the prior art in headrest not in time and led to backrest folding when extruding carriage space, influence the technical problem of storage flatness, improved the utilization of vehicle interior space and overall man-machine engineering performance.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle parts technology, specifically relating to an automatic headrest lowering structure and a vehicle. Background Technology

[0002] In existing vehicle seat designs, especially in the rear seat structure, foldable backrests are usually provided to meet the space needs of users in different usage scenarios. For example, when it is necessary to expand the luggage compartment volume or to fold down the seats to create a flat cargo surface, users can fold the rear seat backrests forward to fit against the seat cushions, thereby freeing up more interior space.

[0003] However, in existing technologies, headrests are mostly fixed or only support manual height adjustment, and their position remains unchanged during backrest folding. When the user does not adjust the headrest to its lowest position before folding the backrest, the headrest is still in a higher position. If the backrest is folded at this time, the headrest will tilt forward along with the backrest, protruding from the backrest surface and occupying extra space. This may not only cause the backrest to not be fully folded or interfere with other interior parts, but may also compress the available space in the rear or trunk area, affecting the placement of items, and even causing wear or damage to interior parts.

[0004] Furthermore, because the headrest does not automatically lower, users must manually press it down to its lowest position before each fold of the backrest, which is cumbersome and reduces ease of use and user experience. This inconvenience is especially pronounced in low light or confined spaces.

[0005] While some vehicle models have introduced electrically adjustable or memory-function headrests, these solutions are often costly and structurally complex, primarily focusing on comfort adjustments and failing to effectively address the technical challenge of automatic headrest retraction when the backrest is folded. Therefore, current technology lacks a simple, reliable, and coordinated mechanism that automatically triggers the headrest's descent before the backrest is folded, enabling coordinated movement between the headrest and seat folding actions, avoiding spatial interference, and enhancing the overall ergonomics and practicality of the vehicle.

[0006] Therefore, there is an urgent need to provide a structure that enables the headrest to automatically drop, so that it can automatically retract to a preset safe position after receiving an unlock signal or a specific operation command, thereby avoiding space occupation and structural interference problems caused by the headrest being too high during the folding of the seat back. Utility Model Content

[0007] The technical problem to be solved by this utility model is to provide an automatic headrest lowering structure and vehicle in light of the current state of the technology.

[0008] The technical solution adopted by this utility model to solve the above-mentioned technical problem is as follows: An automatic headrest lowering structure is proposed, used to drive the headrest to fall relative to the seat and move closer to it. The automatic lowering structure includes:

[0009] A guide sleeve assembly, which is fixedly installed on the seat, includes a guide sleeve for accommodating the support rod of the headrest;

[0010] A locking member is movably disposed on the guide sleeve assembly and has a locked position and an unlocked position; in the locked position, the locking member fixes the headrest support rod inside the guide sleeve; in the unlocked position, the locking member disengages from the support rod.

[0011] An unlocking component is movably disposed on the guide sleeve assembly. Its moving direction is coplanar with and intersects the moving direction of the locking component. The unlocking component and the locking component directly or indirectly cooperate to drive the locking component to switch between a locked position and an unlocked position.

[0012] A drive component is disposed inside the seat and connected to the support rod of the headrest; wherein,

[0013] When the unlocking member moves relative to the guide sleeve assembly and drives the locking member to move from the locked position to the unlocked position, the driving member can pull the headrest to move towards the seat to a preset position.

[0014] In the aforementioned automatic headrest lowering structure, the locking member is provided with a first abutting part, which extends along a plane direction perpendicular to the moving direction of the locking member and the moving direction of the unlocking member. The unlocking member is provided with an inclined surface, which contacts and abuts the first abutting part to drive the locking member from the locked position to the unlocked position when the unlocking member moves.

[0015] In the aforementioned automatic headrest lowering structure, the locking element is an unlocking wire, at least one end of which is bent to form a snap-fit ​​portion. The snap-fit ​​portion engages with a slot on the support rod to fix the headrest when the locking element is in the locked position. The first abutment portion extends radially along the unlocking wire.

[0016] In the aforementioned automatic headrest lowering structure, the locking member is further provided with a second abutting part, and the guide sleeve assembly is provided with a first elastic member. The second abutting part abuts against the first elastic member, and the first elastic member is used to drive the locking member to reset.

[0017] In the aforementioned automatic headrest lowering structure, the guide sleeve assembly is provided with a first hook and a second hook facing opposite directions, and a support space is formed between the first hook and the second hook. The support space abuts against the outer wall of the locking member to provide support for the locking member.

[0018] The aforementioned automatic headrest lowering structure also includes a pull cord, one end of which is connected to the unlocking member and used to drive the unlocking member to move relative to the guide sleeve assembly.

[0019] In the aforementioned automatic headrest lowering structure, the guide sleeve assembly is provided with an interconnected guide channel and a receiving cavity. The unlocking member includes a main body and a guide portion. The guide portion is movably inserted into the guide channel to provide guidance for the movement of the unlocking member. The main body is disposed in the receiving cavity, and a second elastic member is disposed between the main body and the receiving cavity. The second elastic member is used to drive the unlocking member to reset.

[0020] The aforementioned automatic headrest lowering structure further includes a pusher, which is movably disposed on the guide sleeve assembly and has one end exposed outside the seat. A third elastic member is disposed between the pusher and the guide sleeve assembly. The third elastic member is used to drive the pusher to reset. The pusher abuts against the unlocking member and is used to drive the unlocking member to move relative to the guide sleeve assembly when the pusher moves relative to the guide sleeve assembly.

[0021] In the aforementioned automatic headrest lowering structure, the driving component is a coil spring structure, one end of which is fixed inside the seat and the other end is connected to the support rod;

[0022] When the locking member moves to the unlocked position and releases the fixation on the support rod, the coil spring structure pulls the headrest toward the seat to a predetermined position.

[0023] This utility model solves the above-mentioned technical problems and also proposes a vehicle, including the above-mentioned automatic headrest lowering structure.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] (1) Through the coordinated operation of the guide sleeve assembly, locking component, unlocking component, and driving component, the headrest automatically lowers under specific working conditions (such as before the rear seat back is folded). When the unlocking action is triggered, the locking component releases its fixation on the headrest support rod, and the driving component immediately pulls the headrest back to the preset position automatically, avoiding the need for manual adjustment of the headrest in traditional structures and significantly improving ease of use. This structure is responsive and reliable, effectively solving the technical problem in the prior art where the backrest is not adjusted in time, causing compression of the cabin space and affecting the flatness of the storage when the backrest is folded, thus improving the utilization rate of the vehicle's interior space and the overall ergonomic performance.

[0026] (2) By setting a first abutment on the locking member and configuring an inclined surface on the unlocking member, a contact abutment is formed between the two, constructing an inclined surface transmission relationship. When the unlocking member moves along its predetermined path, the inclined surface pushes the first abutment, thereby efficiently and smoothly driving the locking member to switch from the locked position to the unlocked position. This design utilizes the mechanical inclined surface principle to realize the direction conversion and amplification of force, reducing motion resistance and improving the reliability and response speed of the unlocking action. In addition, due to its compact structure, it is easy to integrate into a limited space.

[0027] (3) By providing a second abutment on the locking element and cooperating with the first elastic element on the guide sleeve assembly, the system achieves the automatic reset function of the locking element. When the external trigger action is released, the first elastic element can actively push the locking element back to the locked position through the second abutment, ensuring that the headrest is always in a stable locked state when not in use, effectively preventing accidental locking due to vibration or accidental contact. This reset mechanism requires no additional power source or control element, has a simple structure, reliable response, and significantly improves the safety, stability, and durability of the system. Attached Figure Description

[0028] Figure 1 This is a perspective view of the rear part of the automatic headrest lowering structure installed on the seat according to the present invention.

[0029] Figure 2 yes Figure 1 A 3D view with parts of the structure hidden.

[0030] Figure 3 This is a 3D view of the locking element after it has been installed on the guide sleeve assembly.

[0031] Figure 4 yes Figure 2 A 3D view showing the hidden structure of the seat, headrest, and guide sleeve components.

[0032] In the figure, 100 is the guide sleeve assembly; 110 is the guide sleeve; 120 is the first elastic element; 130 is the first hook; 140 is the second hook; 150 is the guide channel; 160 is the receiving cavity; 170 is the second elastic element; 180 is the third elastic element; 200 is the headrest; 210 is the support rod; 300 is the locking element; 310 is the first abutment part; 320 is the snap-fit ​​part; 330 is the second abutment part; 400 is the unlocking element; 410 is the main body; 420 is the guide part; 430 is the inclined surface; 500 is the driving element; 600 is the pull rope; 700 is the pushing element; and 800 is the seat. Detailed Implementation

[0033] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0034] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0035] like Figures 1 to 4 As shown, the present invention provides an automatic headrest lowering structure for driving the headrest 200 to automatically fall and move closer to the seat 800. The automatic lowering structure includes: a guide sleeve assembly 100, a locking component 300, an unlocking component 400, and a driving component 500.

[0036] Specifically, the guide sleeve assembly 100 constitutes the main support structure of this automatic lowering structure, and is fixedly installed on the seat 800, providing an installation base and motion guide for the locking component 300 and the unlocking component 400. The guide sleeve assembly 100 is provided with a guide sleeve 110, which can be integrally formed with the guide sleeve assembly 100, or fixed to the guide sleeve assembly 100 by means of threaded connection, welding, or adhesive bonding. The support rod 210 of the headrest 200 is inserted into the guide sleeve 110, realizing a slidable connection between the headrest 200 and the seat 800.

[0037] In one embodiment, the guide sleeve assembly 100 is fixed inside the seat 800, and one end of the guide sleeve 110 extends directly or indirectly to the outside of the seat 800 for connection with the support rod 210 of the headrest 200, ensuring that the support rod 210 can slide axially within the guide sleeve 110.

[0038] The locking member 300, serving as a fixing mechanism for the support rod 210, is movably mounted on the guide sleeve assembly 100 and has a locked position and an unlocked position. The locked position refers to the position where the locking member 300 fixes the support rod 210 of the headrest 200 within the guide sleeve 110; the unlocked position refers to the release position where the locking member 300 disengages from the support rod 210 and is released from its fixed position. When the locking member 300 is in the locked position, it fixes the support rod 210 by clamping or snapping, thereby stably maintaining the headrest 200 at a set height; when in the unlocked position, the locking member 300 releases its constraint on the support rod 210, allowing the headrest 200 to move freely relative to the seat 800 under external force.

[0039] The unlocking component 400, acting as an actuator to switch the locking component 300 from the locked position to the unlocked position, is movably mounted on the guide sleeve assembly 100. In this design, the moving direction of the unlocking component 400 and the moving direction of the locking component 300 are located in the same plane and intersect each other (e.g., oblique or perpendicular) to achieve a change in the direction of movement.

[0040] In one embodiment, the unlocking member 400 is in direct contact with the locking member 300. When the unlocking member 400 moves, it directly pushes the locking member 300 through the contact surface, causing it to move from the locked position to the unlocked position.

[0041] In another embodiment, the unlocking member 400 and the locking member 300 are indirectly cooperated, and elastic elements such as springs and torsion springs are provided between them to buffer the impact of movement or assist in realizing the reset function.

[0042] The drive component 500 serves as the power source for the headrest 200 after the support rod 210 is unlocked. It actively pulls the headrest 200 towards the seat 800 to a preset position after the locking component 300 releases the support rod 210. When the unlocking component 400 moves relative to the guide sleeve assembly 100 and drives the locking component 300 to switch from the locked position to the unlocked position, the support rod 210 is released, and the drive component 500 is activated, pulling the headrest 200 to complete the automatic lowering action.

[0043] In one embodiment, the preset position is when the headrest 200 body 410 abuts against the backrest or cushion of the seat 800, and the headrest 200 moves to the closest position relative to the seat 800, i.e., the fully retracted state, so as to minimize space occupation.

[0044] This solution, through the coordinated operation of the guide sleeve assembly 100, locking component 300, unlocking component 400, and driving component 500, enables the headrest 200 to automatically lower under specific conditions (such as before the rear seat back is folded). When the unlocking action is triggered, the locking component 300 releases its fixation on the headrest 200 support rod 210, and the driving component 500 then pulls the headrest 200 back to the preset position automatically. This avoids the need for manual adjustment of the headrest 200 in traditional structures, significantly improving ease of use. This structure is responsive and reliable, effectively solving the technical problem in existing technologies where the headrest 200 is not adjusted in time, causing the backrest to compress the passenger compartment space and affect the flatness of the storage when folded. This improves the utilization rate of the vehicle's interior space and the overall ergonomic performance.

[0045] The locking member 300 is provided with a first abutment portion 310, which extends along a plane perpendicular to the moving direction of the locking member 300 and the unlocking member 400. The unlocking member 400 is provided with a ramp 430, which abuts against the first abutment portion 310, so that when the unlocking member 400 moves, it can drive the locking member 300 from the locked position to the unlocked position.

[0046] Reference Figure 2 and Figure 4 As the unlocking member 400 moves from top to bottom, the inclined surface 430 on the unlocking member 400 is tightly fitted with the first abutment portion 310 on the locking member 300. As the unlocking member 400 continues to move, it... Figure 4 Applying force from left to right causes the locking member 300 to move from the locked position to the unlocked position, thereby completing the unlocking operation of the headrest 200.

[0047] By providing a first abutment 310 on the locking member 300 and a ramp 430 on the unlocking member 400, a contact abutment is formed between the two, establishing a ramp transmission relationship. When the unlocking member 400 moves along its predetermined path, the ramp 430 pushes the first abutment 310, thereby efficiently and smoothly driving the locking member 300 from the locked position to the unlocked position. This design utilizes the principle of the mechanical ramp 430 to achieve force direction conversion and amplification, reducing motion resistance and improving the reliability and response speed of the unlocking action. Furthermore, due to its compact structure, it is easy to integrate into limited spaces.

[0048] In a preferred embodiment, the locking member 300 is an unlocking wire, at least one end of which is bent to form a locking portion 320. The locking portion 320 engages with a slot on the support rod 210 to secure the headrest 200 when the locking member 300 is in the locked position. The first abutment portion 310 extends radially along the unlocking wire.

[0049] The locking component 300 is designed as an unlocking wire, with its end bent to form a locking portion 320, allowing it to stably engage with the slot on the headrest support rod 210, achieving reliable locking and positioning. This structure is not only easy to manufacture and low in cost, but also has good strength and elastic recovery capabilities. Simultaneously, the first abutment portion 310 extends radially along the unlocking wire, facilitating precise engagement with the inclined surface 430 of the unlocking component 400, ensuring smooth unlocking action. The overall structure is lightweight and highly durable, making it ideal for frequently operated vehicle environments.

[0050] To achieve the automatic reset function of the locking member 300, a second abutment 330 is provided on the locking member 300, and a first elastic member 120 is provided on the guide sleeve assembly 100. The second abutment 330 abuts against the first elastic member 120 in contact. The first elastic member 120 is used to drive the locking member 300 to reset from the unlocked position to the locked position after the unlocking action is completed.

[0051] Reference Figure 4 In a preferred embodiment, the first elastic element 120 is a spring sheet fixed to the guide sleeve assembly 100, and the locking element 300 is provided with a second abutting portion 330 that abuts against the spring sheet. During the process of the unlocking element 400 moving and driving the locking element 300 from the locked position to the unlocked position, the second abutting portion 330 pushes the spring sheet to undergo elastic deformation; when the unlocking element 400 retracts and resets, the spring sheet acts in the opposite direction on the second abutting portion 330 by its own restoring force, thereby pushing the locking element 300 to reset synchronously to the locked position.

[0052] Of course, the first elastic element 120 can also be other types of elastic elements, such as a compression spring, tension spring or torsion spring arranged laterally, and their design principle is the same: during the movement of the locking element 300, the elastic element is driven to produce elastic deformation through the second abutment part 330; when the external force is removed and the unlocking element 400 is reset, the elastic element releases the stored energy and drives the locking element 300 back to the initial locked state through the reverse thrust or pull.

[0053] By providing a second abutment 330 on the locking member 300 and cooperating with the first elastic element 120 on the guide sleeve assembly 100, the system achieves an automatic reset function for the locking member 300. When the external trigger action is released, the first elastic element 120 can actively push the locking member 300 back to the locked position through the second abutment 330, ensuring that the headrest 200 is always in a stable locked state when not in use, effectively preventing accidental locking due to vibration or accidental contact. This reset mechanism requires no additional power source or control components, has a simple structure, reliable response, and significantly improves the safety, stability, and durability of the system.

[0054] In order to support the locking member 300 on the guide sleeve assembly 100, the guide sleeve assembly 100 is provided with a first hook 130 and a second hook 140 facing opposite directions. A support space is formed between the first hook 130 and the second hook 140. The support space abuts against the outer wall of the locking member 300 to provide support for the locking member 300.

[0055] The first hook 130 and the second hook 140 on the guide sleeve assembly 100 are arranged opposite each other to form a support space for the outer wall of the locking member 300, providing stable bidirectional support force for the locking member 300 in the locked state. This symmetrical support structure effectively enhances the structural rigidity of the locking member 300 when subjected to the pressure of the support rod 210, preventing it from shifting or deforming and improving locking reliability. At the same time, this design helps to disperse stress, extend the service life of components, and ensure safety and durability during long-term use.

[0056] This solution also includes a pull rope 600, one end of which is connected to the unlocking member 400 and is used to drive the unlocking member 400 to move relative to the guide sleeve assembly 100.

[0057] In one embodiment, one end of the pull rope 600 is connected to the unlocking member 400 via a ball-head structure. Specifically, a ball-head is fixedly mounted at the end of the pull rope 600, and the unlocking member 400 has a groove-shaped fitting structure that engages with the ball-head. Of course, other connection methods can also be used between the pull rope 600 and the unlocking member 400, such as threaded connections, snap-fit ​​connections, or pin connections, as long as reliable transmission can be achieved.

[0058] The other end of the pull cord 600 can be integrated into the operating switch of the seat 800 backrest flipping mechanism. When the user operates the backrest folding mechanism, the movement of the flipping mechanism can simultaneously pull the pull cord 600, thereby driving the unlocking member 400 to move, triggering the headrest 200 to automatically fall and approach the seat 800. In addition, the pull cord 600 can also be pulled by an independent drive motor. This motor receives control signals of the seat 800 backrest folding state (such as instructions from the angle sensor or body controller) through a signal processing unit. When it detects that the backrest is about to fold or has begun to fold, it automatically starts and pulls the pull cord 600, thereby driving the unlocking member 400 to move relative to the guide sleeve assembly 100, ultimately realizing the automatic unlocking and falling of the headrest 200.

[0059] By adding a pull cord 600 and connecting one end to the unlocking mechanism 400, users can trigger the headrest 200 to descend via remote manual operation (such as pulling the pull cord 600). This design significantly improves the convenience of human-computer interaction, especially suitable for the operation scenario before the rear seat 800 is folded down—users do not need to directly touch the headrest 200 to complete the unlocking preparation in advance, realizing a "one-click trigger" automatic retraction of the headrest 200, simplifying the operation process and improving ease of use and user experience.

[0060] The guide sleeve assembly 100 is provided with a guide channel 150 and a receiving cavity 160 that are interconnected. The unlocking member 400 includes a main body 410 and a guide part 420. The guide part 420 is movably inserted into the guide channel 150 to provide guidance for the movement of the unlocking member 400. The main body 410 is housed in the receiving cavity 160, and a second elastic member 170 is provided between the main body 410 and the receiving cavity 160. The second elastic member 170 is used to drive the unlocking member 400 to automatically reset after the unlocking action is completed.

[0061] Preferably, the second elastic element 170 is a compression spring or a tension spring. By providing a connecting guide channel 150 and a receiving cavity 160 within the guide sleeve assembly 100, and cooperating with the guide portion 420 on the unlocking member 400, the unlocking member 400 can be precisely guided to move linearly along a predetermined trajectory, effectively avoiding swaying or jamming during movement. Simultaneously, the main body 410 is partially disposed within the receiving cavity 160 and cooperates with the second elastic element 170, ensuring that after the unlocking member 400 completes its movement under external force, it can reliably reset under the restoring force of the elastic element.

[0062] This integrated guidance and reset structure design not only improves motion accuracy and response sensitivity, but also enhances the stability and repeatability of system actions, making it suitable for high-frequency, high-reliability automotive applications.

[0063] This solution also includes a pusher 700, which is movably mounted on the guide sleeve assembly 100, with one end exposed outside the seat 800. A third elastic element 180 is provided between the pusher 700 and the guide sleeve assembly 100, which is used to automatically reset the pusher 700 after operation. The pusher 700 abuts against the unlocking element 400, and is used to drive the unlocking element 400 to move synchronously when the pusher 700 moves relative to the guide sleeve assembly 100, thereby triggering the locking element 300 to release the lock on the headrest 200 support rod 210.

[0064] In one embodiment, the pusher 700 is mounted on the guide sleeve assembly 100 in a linear sliding manner. The movable abutment between the pusher 700 and the unlocking member 400 constitutes a manual or linkage unlocking method. The end of the pusher 700 exposed outside the seat 800 can be manually pushed by an operator. By applying external force to move the pusher 700, the unlocking member 400 is pushed to move, ultimately causing the locking member 300 to disengage from the support rod 210, thereby unlocking the headrest 200.

[0065] Preferably, the third elastic element 180 is a compression spring or a tension spring, and its function is as follows: on the one hand, after the unlocking element 400 is driven to move by the pushing element 700, the third elastic element 180 provides a restoring force to make the pushing element 700 automatically reset; on the other hand, when the unlocking element 400 is driven by other means such as the pull rope 600, the third elastic element 180 can keep the pushing element 700 stationary to avoid interference.

[0066] In another embodiment, the pusher 700 is rotatably mounted on the guide sleeve assembly 100, i.e., configured as a knob structure. By providing an eccentric boss or cam structure on the pusher 700, when the pusher 700 rotates, its protruding portion pushes the unlocking member 400 to produce a linear displacement, thereby disengaging the locking member 300 from the support rod 210 and completing the unlocking action. At this time, the third elastic member 180 can be a torsion spring, or a tension spring or other elastic element used in conjunction with the guide structure, to achieve the rotational reset of the pusher 700.

[0067] This design incorporates a pusher 700 and a third elastic element 180 to form a two-stage triggering mechanism. The pusher 700 can directly press against the unlocking element 400 under external force (such as the push of the backrest folding linkage rod), thereby triggering the locking element 300 to unlock. The third elastic element 180 ensures that the pusher 700 quickly returns to its original position after completing its action, preparing for the next operation. This structure can be linked with other mechanical mechanisms of the seat 800 (such as the backrest folding mechanism). Before the backrest begins to fold, the headrest 200 is automatically triggered to fall, truly achieving a seamless intelligent storage function and significantly improving the overall human-centered design and ease of use of the vehicle.

[0068] The drive component 500 is a coil spring structure, with one end fixed inside the seat 800 and the other end connected to the support rod 210 of the headrest 200. When the locking component 300 moves to the unlocked position and releases the constraint on the support rod 210, the coil spring structure, relying on the pre-stored elastic force, pulls the headrest 200 towards the seat 800 until it reaches the preset storage position.

[0069] The use of a coil spring structure as the drive component 500 offers advantages such as simple structure, low cost, and stable performance. After the locking component 300 is unlocked, the coil spring structure immediately releases its stored energy, driving the headrest 200 to descend quickly and smoothly to the predetermined position. This drive method requires no electricity or other external energy source, relying entirely on mechanical elastic energy storage. It features rapid response, low failure rate, and meets the requirements of automotive components for high reliability and maintenance-free operation. It is particularly suitable for mid-to-low-end models, helping to improve the product's cost-effectiveness.

[0070] Of course, in other embodiments, the drive component 500 may also take other forms, such as a compression spring, a gas spring, or an electronically controlled actuator driven by a motor, to meet the functional requirements and cost configurations of different vehicle models.

[0071] This solution also proposes a vehicle that includes the aforementioned automatic descent structure.

[0072] In summary, this solution provides a headrest 200 automatic lowering structure that is structurally sound, reliable in response, and easy to operate. This structure, through the coordinated operation of the guide sleeve assembly 100, locking component 300, unlocking component 400, and driving component 500, achieves the automatic retraction function of the headrest 200 under specific working conditions (such as before the rear seat 800 backrest is folded). When the unlocking action is triggered by the pull rope 600, the push component 700, or the linkage mechanism, the locking component 300 releases its fixation on the headrest 200 support rod 210, and the driving component 500 then pulls the headrest 200 to automatically lower to the preset storage position. This effectively avoids the backrest folding interference problem caused by the headrest 200 being too high, significantly improving the utilization of interior space and user convenience.

[0073] This innovative solution employs a 430-degree inclined plane transmission, elastic reset, guide limit, and multi-mode triggering mechanism to ensure the smoothness and reliability of the unlocking action. The locking component 300 can utilize a bent and snap-fit ​​steel wire structure, which is lightweight and easy to manufacture; the unlocking component 400 cooperates with the guide sleeve assembly 100 through the guide part 420 to achieve precise linear movement; the reset function is automatically completed by elastic components (such as springs, compression springs, torsion springs, etc.) without additional control, resulting in a simple structure and high durability. In addition, the system supports multiple triggering methods such as manual pull rope 600, sliding push component 700, and rotary knob, which can be operated independently or mechanically linked with the seat 800 backrest folding mechanism to truly achieve "seamless" intelligent storage.

[0074] The drive component 500 is preferably a coil spring structure, which utilizes mechanical energy storage to achieve automatic lowering of the headrest 200. It offers rapid response, requires no maintenance, and is suitable for mid-to-low-end models to improve cost-effectiveness. Simultaneously, it is compatible with electronically controlled drive solutions to meet the intelligent requirements of high-end models. The overall structure is compact, cost-controllable, and easy to integrate, making it widely applicable to the rear seats 800 of various passenger vehicles, demonstrating good practicality and industrialization prospects.

[0075] It should be noted that in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0076] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. 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 utility model.

[0077] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A headrest automatic lowering structure for driving the headrest to fall relative to and close to a seat, characterized in that, The automatic falling structure includes: A guide sleeve assembly, which is fixedly installed on the seat, includes a guide sleeve for accommodating the support rod of the headrest; A locking member is movably disposed on the guide sleeve assembly and has a locked position and an unlocked position; in the locked position, the locking member fixes the headrest support rod inside the guide sleeve; in the unlocked position, the locking member disengages from the support rod. An unlocking component is movably disposed on the guide sleeve assembly. Its moving direction is coplanar with and intersects the moving direction of the locking component. The unlocking component and the locking component directly or indirectly cooperate to drive the locking component to switch between a locked position and an unlocked position. A drive component is disposed inside the seat and connected to the support rod of the headrest; wherein, When the unlocking member moves relative to the guide sleeve assembly and drives the locking member to move from the locked position to the unlocked position, the driving member can pull the headrest to move towards the seat to a preset position.

2. The automatic lowering headrest structure as described in claim 1, characterized in that, The locking member is provided with a first abutting part, which extends along a plane direction perpendicular to the moving direction of the locking member and the moving direction of the unlocking member. The unlocking member is provided with an inclined surface, which contacts and abuts the first abutting part to drive the locking member from the locked position to the unlocked position when the unlocking member moves.

3. The automatic lowering headrest structure as described in claim 2, characterized in that, The locking element is an unlocking wire, at least one end of which is bent to form a snap-fit ​​portion. The snap-fit ​​portion engages with a slot on the support rod to fix the headrest when the locking element is in the locked position. The first abutment portion extends radially along the unlocking wire.

4. The automatic lowering headrest structure as described in claim 1, characterized in that, The locking member is further provided with a second abutting part, and the guide sleeve assembly is provided with a first elastic member. The second abutting part abuts against the first elastic member in contact, and the first elastic member is used to drive the locking member to reset.

5. The automatic lowering headrest structure as described in claim 1, characterized in that, The guide sleeve assembly is provided with a first hook and a second hook facing opposite directions, and a support space is formed between the first hook and the second hook. The support space abuts against the outer wall of the locking member to provide support for the locking member.

6. The automatic lowering headrest structure as described in claim 1, characterized in that, It also includes a pull cord, one end of which is connected to the unlocking member and is used to move the unlocking member relative to the guide sleeve assembly.

7. The automatic lowering headrest structure as described in claim 1, characterized in that, The guide sleeve assembly is provided with a guide channel and a receiving cavity that are interconnected. The unlocking member includes a main body and a guide part. The guide part is movably inserted into the guide channel to provide guidance for the movement of the unlocking member. The main body is disposed in the receiving cavity, and a second elastic member is disposed between the main body and the receiving cavity. The second elastic member is used to drive the unlocking member to reset.

8. The automatic lowering headrest structure as described in claim 1, characterized in that, It also includes a pusher, which is movably disposed on the guide sleeve assembly and has one end exposed outside the seat. A third elastic member is disposed between the pusher and the guide sleeve assembly. The third elastic member is used to drive the pusher to reset. The pusher abuts against the unlocking member and is used to drive the unlocking member to move relative to the guide sleeve assembly when the pusher moves relative to the guide sleeve assembly.

9. The automatic lowering headrest structure as described in claim 1, characterized in that, The driving component is a coil spring structure, with one end fixed inside the seat and the other end connected to the support rod; When the locking member moves to the unlocked position and releases the fixation on the support rod, the coil spring structure pulls the headrest toward the seat to a predetermined position.

10. A vehicle, characterized in that, Including an automatic headrest lowering structure as described in any one of claims 1 to 9.

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