Small table plate device for vehicle seat, active protection system and vehicle

Abstract

The invention provides a small table plate device for a vehicle seat, an active protection system and a vehicle. According to the small table plate device for the vehicle seat, the damage of an unfolded small table plate to passengers in the back row can be reduced to the maximum extent when the vehicle is braked emergently or collided; meanwhile, when the small table board is activated to be in the active recycling mode, the articles placed on the small table board can be protected to the maximum extent. The small table board device comprises a small table board body; the telescopic part is arranged on the back side of the seat back in a telescopic manner and is provided with a retraction position accommodated in the seat back and an extension position horizontally extending backwards; the flexible baffle part is connected between the telescopic part and the small table plate body in a folded state when the small table plate body is in the use position, and can be unfolded from the folded state between the telescopic part and the small table plate body along with the rotation of the small table plate body from the use position to the storage position; therefore, a containing space is defined by the telescopic part, the baffle part and the small table board body.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a small table device for a vehicle seat, an active protection system and a vehicle, belonging to the technical field of vehicle. BACKGROUND

[0002] In vehicles, in order to improve the convenience and experience of rear passengers, most of the currently available vehicle models are equipped with foldable small tables. Such small tables are usually fixedly installed at the rear part of the backrest of the front seat, and their storage state and use state are switched by folding action: when not in use, the small table is folded upward and folded at the rear part of the backrest of the front seat, neither occupying the space in the vehicle nor affecting the normal seating and movement of the rear passengers; when needed, the passenger can manually turn the small table downward by nearly 90 degrees, so that it is switched from the vertical storage state to the horizontal support state, in order to place tableware, electronic devices, documents and other articles, to meet the needs of temporary dining, office work or entertainment, etc.

[0003] However, while the above-mentioned conventional foldable small table provides convenience, it also increases safety hazards in actual use. When the vehicle suddenly stops during driving, or a front collision accident or rear-end collision occurs, the rear passenger will have a transient acceleration to the front of the vehicle due to inertia, and will have a forward impact movement. At this time, if the small table body is in a horizontal unfolded use state, its hard support surface will directly form a rigid barrier, and the body of the rear passenger (especially the head, chest and other key parts) is likely to collide violently with the small table in the horizontal state, thereby causing injury to the passenger; at the same time, the articles placed on the small table may fall off due to the impact, further causing secondary injury to the passenger, seriously affecting the safety of the rear passenger. SUMMARY

[0004] In order to solve the above technical problems of the conventional small table of the vehicle seat, the present disclosure proposes a new small table device for a vehicle seat, an active protection system and a vehicle, which can minimize the injury of the unfolded small table to the rear passenger when the vehicle has an emergency brake or a collision; at the same time, when the small table is activated in the active recovery mode, it can also maximize the protection of the articles placed on the small table, and protect the passenger from being injured by the falling articles, thereby greatly improving the safety of the rear passenger.

[0005] The first aspect of the present disclosure provides a small table device for a vehicle seat, comprising: a small table body rotatably arranged on the back side of a seat backrest, having a storage position stacked on the seat backrest and a use position rotated upward from the storage position to a substantially horizontal posture, so that the small table body can be actively or passively switched between the storage position and the use position; a retractable part arranged on the back side of the seat backrest in a position higher than the small table body and having a retracted position stored in the seat backrest and an extended position horizontally extended backward from the back of the seat backrest; and a flexible baffle part arranged on the retractable part and connected between the retractable part and the small table body in a folded state when the small table body is in the use position, and capable of unfolding from the folded state between the retractable part and the small table body as the small table body rotates from the use position to the storage position, so as to form an accommodation space surrounded by the retractable part, the baffle part and the small table body.

[0006] According to the small table device with the above configuration, the support characteristics of the small table body are retained to meet the daily needs of placing articles, and precise protection is achieved through the linkage of the retractable part, the flexible baffle part and the small table body. During daily use, the retractable part remains in the extended state, and the flexible baffle part is connected in a folded form between the retractable part and the small table body in a horizontal posture, without occupying additional space and affecting the placing and taking of articles; when the vehicle is suddenly stopped or collides or is rear-ended, the small table body actively rotates back to the storage position of the seat backrest from the horizontal use position, simultaneously driving the originally folded flexible baffle part to unfold between the horizontally extended retractable part and the downward rotating small table body, and the three parts together form an accommodation space, which can stably limit the articles on the small table and avoid injuring the rear passenger due to inertia; at the same time, the recovery action of the small table body reduces the probability of collision between the horizontal rigid surface and the passenger, and the unfolding of the flexible baffle part provides bottom protection for the articles, without changing the core use function of the small table body and without the need for additional manual operation, the problems of rigid collision injury and secondary injury of articles falling during the unfolding of the traditional small table are solved, and the safety and reliability of the vehicle are significantly improved.

[0007] Preferably, in the small table device of the first aspect, the retractable part comprises a pair of folding telescopic arms extending in the front-rear direction of the vehicle, and a transverse connecting rod connected between the rear ends of the pair of folding telescopic arms, the pair of folding telescopic arms having front ends located at the sides of the seat backrest and rear ends opposite to the front ends; and the baffle part comprises a pair of side baffles fixed to the lower ends of the pair of folding telescopic arms in a one-to-one correspondence, and a transverse baffle attached to the lower end of the transverse connecting rod, and the lower ends of the pair of side baffles and the transverse baffle are each provided with a first adhesive part, and the small table body is provided with a second adhesive part at a position on the upper surface corresponding to the retractable part, and the first adhesive part and the second adhesive part can adhere to and separate from each other.

[0008] According to the small table device with the above configuration, the pair of side baffles are fixed to the lower ends of the folding telescopic arms, and the transverse baffle is attached to the lower end of the transverse connecting rod, so that a surrounding base suitable for the small table can be formed, and the cooperation of the first adhesive part and the second adhesive part can stably adhere the lower ends of the side baffles and the transverse baffle to the upper surface of the small table body when the small table body is in the normal use position, ensuring that the baffle part is reliably connected in the folded state without loosening and interfering with the placement and retrieval of articles; when the small table body is passively rotated to the storage position by user operation, the first adhesive part and the second adhesive part are separated, without hindering the rotation and recovery action of the small table; when the small table body is triggered to be actively rotated to the storage position due to vehicle collision or the like, the adhesion of the first adhesive part and the second adhesive part can smoothly unfold the side baffles and the transverse baffle, and further form a lateral and rear end protection structure with the retractable part and the small table body to accurately surround and form a storage space, effectively improving the limiting stability of articles and ensuring the reliable triggering of the protection function.

[0009] Preferably, in the small table device of the first aspect, the retractable part is configured as follows: the front ends of the pair of folding telescopic arms are located at positions above the left and right end portions of the small table body, so that when the small table body is in the use position, the pair of folding telescopic arms are elongated from the front ends and stacked on the left and right end portions of the small table body, and the pair of folding telescopic arms are configured to be at least capable of being elongated so that the transverse connecting rod is located at the rear end portion of the small table body.

[0010] According to the small table device with the above configuration, the telescopic part is adapted to the outer edge of the small table body through a pair of folding telescopic arms and a transverse connecting rod, so that when the telescopic part is stacked on the small table body in the use position, a closed space is formed at the outer edge of the small table body, which does not occupy the storage space of the small table body, ensuring the normal storage needs of the small table body. At the same time, the telescopic part enclosed by the outer edge of the small table body also plays a certain role in blocking and limiting the placed articles to prevent accidental falling of the placed articles. On the other hand, when the small table body is actively rotated, the folding telescopic arms forming the closed space together with the baffle can maximize the range of the accommodation space, so as to reliably hold various articles placed on the small table body and avoid the impact of the articles on the human body.

[0011] Preferably, in the small table device of the first aspect, the arm body of each of the folding telescopic arms of the telescopic part is a multi-unit articulated X-shaped structure, which is formed by connecting a plurality of X-shaped basic units through end articulation assemblies. Each X-shaped basic unit is formed by two equal-length rods articulated at the midpoint, and each X-shaped basic unit deforms cooperatively to realize linear telescoping of the folding telescopic arm.

[0012] According to the small table device with the above configuration, the folding telescopic arms of the telescopic part are configured by a multi-unit articulated X-shaped structure, and each X-shaped basic unit is connected in series by articulation. Not only can the length be smoothly and stably telescoped, but the X-shaped structure also has excellent overall strength and anti-deformation ability. Even when the small table is actively rotated downward, the folding telescopic arms can stably support the weight of the articles held by the baffle part. In addition, the multi-unit articulated X-shaped structure also helps to absorb energy when the telescopic part is contracted. Even if the user may collide with the telescopic part, the telescopic part can reliably absorb the impact force by deforming and contracting, so as not to cause harm to the user.

[0013] Preferably, in the small table device of the first aspect, each of the folding telescopic arms of the telescopic part further comprises a moving end head provided at the front end and the rear end of the arm body, respectively, i.e., a front end moving end head provided at the front end and a rear end moving end head provided at the rear end. The front end moving end head and the rear end moving end head are each a box-shaped structure with an opening, so that the front end and the rear end of the arm body are respectively accommodated in the corresponding moving end head via the opening. At least one of the inner surfaces of the left and right side walls of each of the front end moving end head and the rear end moving end head is provided with an arc-shaped sliding groove, the radius of the arc-shaped sliding groove being the distance from the midpoint of the rod of the X-shaped basic unit to the end articulation assembly. The two end articulation assemblies of the outermost ends of the two X-shaped basic units at the front end and the rear end of the arm body can extend into and be clamped in the arc-shaped sliding groove and slide in the arc-shaped sliding groove along with the telescoping of the arm body.

[0014] According to the small table device with the above configuration, the front end moving end head and the rear end moving end head arranged at the two end portions of the folding telescopic arm can not only provide protection for the free ends of the two X-shaped base units at the outermost side to prevent being touched by mistake and damaged, but also can be fixed by the end articulation assembly and the clamping action of the arc-shaped sliding groove, and can guide the front and rear ends of the arm body of the folding telescopic arm when the arm body is extended and retracted, so that the telescopic process is smoother

[0015] Preferably, in the small table device of the first aspect, further comprising: a telescopic arm recovery cavity recessed formed on the back side of the seat back, so that the folding telescopic arm in the retracted position can be accommodated in the telescopic arm recovery cavity, the left and right sides and / or the upper and lower sides of the telescopic arm recovery cavity are respectively formed with a guide sliding groove extending in the front-rear direction of the vehicle, and the rear end of the guide sliding groove is a closed end and is separated from the back of the seat back by a predetermined distance, the left and right outer surfaces and / or the upper and lower outer surfaces of the front end moving end head of the folding telescopic arm are respectively provided with rollers, which can be embedded in the guide sliding groove and slide forward and backward along the guide sliding groove.

[0016] According to the small table device with the above configuration, the telescopic arm recovery cavity provides space for the accommodation of the folding telescopic arm into the seat back, so that the telescopic arm can be hidden in the non-use position. By arranging the front and rear extending guide sliding groove on the inner side of the telescopic arm recovery cavity, the front end moving end head of the folding telescopic arm is movable forward and backward instead of fixed, that is, the moving stroke provided by the guide sliding groove can compensate for the required length of the folding telescopic arm, so that the folding telescopic arm does not need to be made very long, thereby saving cost, improving reliability, and better hiding the folding telescopic arm. Moreover, the rolling cooperation of the guide sliding groove and the roller can reliably guide the sliding, and the front end face of the guide sliding groove can also play a limiting and clamping role to prevent the telescopic arm from being pulled out too much.

[0017] Preferably, in the small table device of the first aspect, the rear end portion of the small table body is provided with a stepped portion recessed in the thickness direction from the upper surface, and the transverse link of the telescopic part has a protruding portion extending more towards the lower side than the folding telescopic arm, which can be clamped to the stepped portion.

[0018] According to the small table device with the above configuration, in the use position of the small table body, the limiting cooperation between the protruding portion and the stepped portion can limit the movement of the telescopic part towards the front of the vehicle, avoiding unnecessary recovery action of the folding telescopic arm due to accidental touch or misoperation, and ensuring reliability.

[0019] Preferably, in the small table device of the first aspect, the small table body is connected to the seat back via a rotary hinge, the rotary hinge including a fixed leaf fixed to the seat back; a movable leaf fixed to the lower surface of the small table body; and a pin connecting the fixed leaf and the movable leaf. The small table body also includes a motor, the output shaft of which is connected to the pin, thereby driving the pin to rotate in both directions, and thus driving the small table body to switch between the storage position and the use position.

[0020] The small table device with the above configuration can provide a driving force for position switching of the small table body through a motor, and has a compact structure and simple control.

[0021] A second aspect of this disclosure provides an active protection system for a vehicle seat, comprising: a small table device according to the first aspect; a sensing unit that senses whether the absolute value of the vehicle's acceleration is greater than a preset threshold and whether the small table body is in the use position, or senses whether the acceleration of an occupant behind the small table body relative to the small table body is greater than a preset threshold and whether the small table body is in the use position; and a control unit that, when sensing the absolute value of the vehicle's acceleration or the acceleration being greater than the preset threshold and the small table body being in the use position, controls the small table body to rotate downward from the use position to switch to a storage position.

[0022] This disclosure provides a third aspect of a vehicle that includes the small table device of the first aspect.

[0023] Since both the active protection system of the second aspect and the vehicle of the third aspect of this disclosure are equipped with the small table device of the first aspect, they can also achieve the corresponding technical effects of the small table device of the first aspect.

[0024] The table device, active protection system, and vehicle disclosed herein have been described in general terms. They address the potential safety risks associated with rear-seat occupants using the table, providing active safety protection for occupants while also considering the protection against items placed on the table falling in emergency situations. Furthermore, their structure is simple, their cost is relatively low, and they are easily implemented in mass-produced vehicles. The following detailed description, with reference to the accompanying drawings, will facilitate a clearer understanding. Attached Figure Description

[0025] The accompanying drawings are provided to better understand the invention and are not intended to unduly limit the scope of the invention. Wherein: Figure 1 This is a schematic side view of the small table device of the present disclosure, showing the normal use state when the small table body is in the use position; Figure 2This is a schematic side view of the small table device of the present disclosure, showing the folded state of the small table body in the storage position; Figure 3 This is a schematic side view of the small table device of this disclosure, and shows the active protection mode trigger state when the small table body is triggered to actively retract. Figure 4 This is a perspective view schematically showing the small table device of the present disclosure in the use position; Figure 5 This is a perspective view schematically showing the small table device of the present disclosure in the use position; Figure 6 yes Figure 5 An enlarged schematic diagram of part d in the diagram; Figure 7 This is a schematic side view illustrating the small table device of an embodiment of the present disclosure in its use position; Figure 8 yes Figure 7 An enlarged schematic diagram of part a in the diagram; Figure 9 yes Figure 7 A cross-sectional view of the BB as viewed in the middle; Figure 10 yes Figure 9 An enlarged schematic diagram of part e in the diagram; Figure 11 yes Figure 10 An enlarged schematic diagram of part i in the diagram; Figure 12 This is a schematic top view of the small table device according to an embodiment of the present disclosure in its use position; Figure 13 yes Figure 12 An enlarged schematic diagram of part b in the diagram; Figure 14 yes Figure 13 An enlarged schematic diagram of part c in the diagram; Figure 15 yes Figure 12 AA sectional view viewed in the middle; Figure 16 yes Figure 12 DD cross-sectional view viewed in the middle; Figure 17 yes Figure 16 An enlarged schematic diagram of the h part; Figure 18 yes Figure 14 CC cross-sectional view viewed in the middle; Figure 19 yes Figure 18 An enlarged schematic diagram of part f in the diagram; Figure 20 yes Figure 18An enlarged schematic diagram of part g in the diagram; Figure 21 This is a schematic diagram showing the rear view of the small table device according to an embodiment of the present disclosure in the use position; Figure 22 This is a schematic bottom view of the small table device according to an embodiment of the present disclosure in the use position.

[0026] List of reference numerals

[0027] 1. Vehicle Seats

[0028] 2. Seat backrest

[0029] 3 Telescopic arm retraction chamber

[0030] 4. Guide groove

[0031] 5. Sunken Platform

[0032] 10 small table body

[0033] 11. Step section

[0034] 13 Second Adhesion Section

[0035] 14 Grooves

[0036] 15 concave part

[0037] 20. Telescopic section

[0038] 21 Folding Telescopic Arm

[0039] 210 Arm Body

[0040] 22 Lateral Link

[0041] 220 Protrusion

[0042] 23. Front-end mobile header

[0043] 230 rollers

[0044] 24. Backend Mobile Header

[0045] 25 Opening

[0046] 26 Arc-shaped grooves

[0047] 30 Baffle section

[0048] 31 Side baffle

[0049] 32 Horizontal baffle

[0050] 33 First Adhesion Section

[0051] 40 X-type basic unit

[0052] 41 strokes

[0053] 42 End hinge assembly

[0054] 43 Midpoint hinge assembly

[0055] 50 Rotary Hinges

[0056] 51 Fixed blade

[0057] 52 Movable leaf plate

[0058] 53 Pins

[0059] 60 motor

[0060] 61 control axes

[0061] ch overlap Detailed Implementation

[0062] The technical solution of the present invention will be described more clearly below by referring to the accompanying drawings and specific embodiments thereof.

[0063] It should be noted that the accompanying drawings of this invention are merely schematic diagrams for clearly illustrating the parts related to the present invention, and do not show some unnecessary parts. Therefore, these drawings should not be construed as limiting the invention, and may differ from the actual structure in use. Furthermore, it should be understood that the terms "up," "down," "left," "right," "front," and "rear," etc., indicating orientation or position, may appear in the following description for ease of explanation and are not restrictive. In this disclosure, "up," "down," "left," "right," "front," and "rear" all represent conventional vehicle directions, i.e., the front of the vehicle is "front," the rear is "rear," the roof is "up," the bottom is "down," and left and right when facing forward are "left" and "right." The description is based on the conventional state of the vehicle with the seats facing forward. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0064] Figures 1-3The present disclosure provides a schematic representation of a tray table device capable of active collision avoidance, such as a tray table device for rear-seat occupants. This disclosure addresses two main problems encountered by rear-seat occupants when using tray tables. First, in the event of emergency braking or a vehicle collision, the tray table body 10 is activated by a command input from the vehicle's ECU. The rigid tray table body 10 rotates rapidly downwards under the action of the motor 60 to avoid direct collision with the rear-seat occupants who are moving forward due to inertia. The retractable portion 20, which does not actively avoid collisions, is designed as a foldable and retractable structure. Upon collision with the occupant, it is compressed accordingly, thus preventing further impact. First, rigid contact occurs between the occupants and the table. Second, when the table device of this disclosure is activated, that is, when the rigid table body 10 rotates and retracts, the items placed on it will fall downwards due to loss of support. At this time, the falling items are likely to be damaged or injure the occupants' body parts. The table device of this disclosure also takes into account the above scenario and designs a protective structure for the falling items. Therefore, it can effectively solve the potential safety risks of rear-seat occupants using the table, and at the same time, it can ensure to the greatest extent that the items on the table will not fall randomly inside the vehicle in an emergency.

[0065] like Figures 1-3 A simplified overview diagram of the three different states of the small table device of this disclosure is shown. Figure 1 This is the normal operating state of the small table device, that is, it is used as a small table for placing items or bearing other loads. Figure 2 This is the non-use state, meaning the small table device is in a retracted state and not used as a small table. Figure 3 This is the active protection mode triggered state, meaning that after receiving a signal from its own or an externally monitored source, the vehicle's ECU determines it to be in an emergency triggering state and sends an activation command to the tray device to activate it. Figure 1 It will automatically retract when in normal use.

[0066] Below, we will refer to Figures 4-22 Embodiments of this disclosure are described.

[0067] <First Embodiment>

[0068] The first embodiment of this disclosure relates to a small table device for a vehicle seat 1. For example... Figures 4-22 As shown, it includes a three-layer structure: the bottom layer is a small table body 10, the top layer is a retractable part 20, and the middle layer is a flexible baffle part 30.

[0069] See Figure 4 The small table body 10 is rotatably mounted on the back side of the seat back 2, and has a storage position that folds into the seat back 2 (see...). Figure 3) and the usage position, which is rotated upwards from the storage position to a basically horizontal orientation (see Figure 1 Thus, the small table body 10 can passively (responding to manual user operation) or actively (without manual user operation, automatically triggered by the system) switch between the storage position and the use position. A recessed platform 5 can be provided on the back of the seat back 2, and the small table device can be placed within the range of this recessed platform 5. However, this recessed platform 5 is not mandatory and can also be arranged as follows: Figures 1-3 As shown in the outline, no sinkhole 5 is provided.

[0070] See Figure 4 The retractable part 20 is retractably disposed on the back side of the seat back 2, located above the small table body 10, and includes a pair of folding telescopic arms 21 extending in the vehicle's front-rear direction and a transverse connecting rod 22 connecting the rear ends of the pair of folding telescopic arms 21. The retractable part 20 has a retracted position stored within the seat back 2 (see...). Figure 2 ) and the extension position that extends horizontally backward from the back of the seat back 2 (see Figure 1 and Figure 3 Each pair of folding telescopic arms 21 has a front end located on one side of the seat back and a rear end opposite to the front end.

[0071] See Figure 8 , Figure 18 , Figure 19 The flexible baffle portion 30 is provided on a pair of folding telescopic arms 21 and a transverse connecting rod 22 of the telescopic portion 20, and is connected between the telescopic portion 20 and the small table body 10 in a folded state when the small table body 10 is in the use position. It can also unfold from the folded state between the telescopic portion 20 and the small table body 10 as the small table body 10 rotates from the use position to the storage position (see...). Figure 3 The flexible baffle 30, consisting of the retractable part 20, the baffle part 30, and the small table body 10, forms a receiving space. The flexible baffle part 30 can be made of a non-metallic material that combines elasticity and toughness, such as polyurethane. To save material costs and achieve higher deployment efficiency, it can be made into a mesh structure.

[0072] The small table device is constructed using the three parts mentioned above: the small table body 10, the retractable part 20, and the baffle part 30. While retaining the supporting characteristics of the small table body 10 to meet daily item placement needs, it also achieves precise protection through the linkage between the retractable part 20, the flexible baffle part 30, and the small table body 10. (See [link] for details) Figure 1The retractable part 20 remains extended, and the flexible baffle part 30 is connected between the retractable part 20 and the horizontally positioned small table body 10 in a folded manner, without occupying extra space or affecting the placement and retrieval of items; when the vehicle undergoes emergency braking or a collision, the small table body 10 retracts from the horizontal use position (see...). Figure 1 The seat backrest 2 rotates and retracts to its storage position, simultaneously causing the originally folded flexible baffle 30 to unfold between the horizontally extended retractable part 20 and the downwardly rotating small table body 10 (see...). Figure 3 Together, these three elements form a containment space, which can securely hold items on the tray table and prevent them from falling off due to inertia and injuring rear passengers. At the same time, the retraction of the tray table body 10 reduces the probability of collision between the horizontal rigid surface and the passengers, while the unfolding of the flexible baffle 30 provides bottom protection for items. Without changing the core function of the tray table body 10 and without requiring additional manual operation, this solution specifically addresses the problems of rigid collision damage and secondary injuries from items falling off when traditional tray tables are unfolded, significantly improving passenger safety and reliability.

[0073] For the retractable part 20, see Figure 4 , Figures 7-15 , Figures 18-20 In this embodiment, the telescopic part 20 is configured as follows: the front ends of a pair of folding telescopic arms 21 are located above the left and right ends of the small table body 10, so that when the small table body 10 is in the use position, the pair of folding telescopic arms 21 extend from the front ends and are stacked on the left and right ends of the small table body 10, and the pair of folding telescopic arms 21 are configured to extend at least to the point that the transverse link 22 is located on the rear end of the small table body 10.

[0074] In this embodiment, as Figure 8 As shown, the arm bodies 210 of each folding telescopic arm 21 of the telescopic part 20 are multi-unit hinged X-shaped structures, which are formed by multiple X-shaped basic units 40 connected in series through end hinge components 42. The X-shaped basic unit 40 is formed by two rods 41 of equal length hinged at the midpoint by a midpoint hinge component 43. Each X-shaped basic unit 40 deforms in coordination to achieve linear extension and retraction of the folding telescopic arm 21. Both the end hinge component 42 and the midpoint hinge component 43 can be pivots, so that the two hinged rods 41 can rotate around the corresponding pivot. During the extension and retraction process, the two basic rods 41 of an X-shaped basic unit 40 will rotate clockwise (e.g., 90°) or counterclockwise (e.g., 90°) around the pivot at the midpoint under the action of tension or thrust; while the tension or thrust acting on the transverse connecting rod 22 is mainly transmitted between different X-shaped basic units 40 through the pivots set at the two ends of the rod 41.

[0075] The multi-unit articulated X-shaped structure of the folding telescopic arm 21 of the telescopic section 20 not only allows for smooth and stable extension and retraction, but also possesses excellent overall strength and resistance to deformation. Even when the small table is actively rotated downwards, the folding telescopic arm 21 can stably support the weight of the items held by the baffle section 30. Furthermore, this multi-unit articulated X-shaped structure also helps to absorb energy during contraction. Even if a user might collide with the telescopic section 20, the telescopic section 20 can reliably absorb the impact force through deformation and contraction, preventing injury to the user.

[0076] Each folding telescopic arm 21 of the telescopic section 20 also includes a movable end head respectively provided at the front end and rear end of the arm body 210, namely, a front movable end head 23 provided at the front end and a rear movable end head 24 provided at the rear end. (See front movable end head 23) Figure 20 ) and backend mobile header 24 (see Figure 19 The arm body 210 is a box-shaped structure with an opening 25 (in this embodiment, it is hexahedral, but not limiting; it can be spherical, hemispherical, cylindrical, or other suitable shapes), so that the front and rear ends of the arm body 210 are respectively received in the corresponding movable ends via the opening 25. At least one of the left and right side walls of the front movable end 23 and the rear movable end 24 (in this embodiment, both) is provided with an arc-shaped groove 26 on its inner surface. The radius of the arc-shaped groove 26 is the distance from the midpoint of the rod 41 of the X-shaped base unit 40 constituting the arm body 210 to the end hinge assembly 42, so that the two end hinge assemblies 42 at the outermost ends of the two X-shaped base units 40 at the front and rear ends of the arm body 210 can extend into and engage in the arc-shaped groove 26 and slide in the arc-shaped groove 26 as the arm body 210 extends and retracts. The front movable end 23 and rear movable end 24 provided at both ends of the folding telescopic arm 21 not only protect the free ends of the two outermost X-shaped base units 40 from accidental contact and damage, but also fix the front and rear ends of the arm body 210 of the folding telescopic arm 21 through the snap-fit ​​action of the end hinge assembly 42 and the arc-shaped slide groove 26, and play a guiding role when the arm body extends and retracts, making its extension and retraction process smoother.

[0077] The rear movable end 24 of the flexible telescopic arm 21 can be integrated with the lateral link 22. In other words, the rear movable end 24 can be considered to be formed at both ends of the flexible telescopic arm 21. The lateral link 22 is a rod extending laterally (i.e., in the left-right direction), such as a square rod in this embodiment (not limiting; it can also be a round rod, an elliptical rod, etc.). The left and right rear movable ends 24 are connected to the lateral link 22 with their openings 25 facing forward. The lateral link 22 and the rear movable ends 24 are made of a low-hardness elastic material, such as rubber. Therefore, in the event of emergency braking or a collision, even if the lateral link 22 and the rear movable ends 24 connected to both sides may come into direct contact or collide with the rear passengers, the low-hardness elastic material, along with the forward folding of the telescopic arm 21, will prevent injury to the passengers.

[0078] In order to allow the retractable part 20 to retract into the seat back 2, such as Figures 9-11 , Figure 18 , Figure 20 As shown, the seat back 2 of the small table device is provided with a telescopic arm retraction cavity 3. The telescopic arm retraction cavity 3 is recessed into the back side of the seat back 2, so that the folding telescopic arm 21 in the retracted position can be stored in the telescopic arm retraction cavity 3 (see...). Figure 2 The left and right sides and / or the top and bottom sides of the telescopic arm retraction chamber 3 (in this embodiment, they are formed on the left and right sides as shown in the figure; however, they can also be formed on the top and bottom sides, or all four sides) are respectively provided with guide grooves 4 extending in the front-rear direction of the vehicle. The rear end of the guide groove 4 is a closed end and is spaced a predetermined distance from the back of the seat back 2. Of course, the front end of the guide groove 4 is also necessarily a closed end. The end face of each closed end is as follows: Figure 11 The front end of the folding telescopic arm 21, specifically the left and right outer surfaces and / or the top and bottom outer surfaces (corresponding to the left and right outer surfaces in this embodiment), can protrude slightly outward from the rear portion to partially engage with the guide groove 4 and the locking surface of the guide groove. The front end of the folding telescopic arm 21 is also provided with rollers 230, which are embedded in the guide groove 4 and slide back and forth along the guide groove 4.

[0079] As described above, the telescopic arm retraction cavity 3 provides space for the folding telescopic arm 21 to be housed within the seat back 2, thus enabling the folding telescopic arm 21 to be retracted and hidden when not in use. By providing a guide groove 4 extending forward and backward on the inner side of the telescopic arm retraction cavity 3, the front moving end 23 of the folding telescopic arm 21 is movable forward and backward instead of being fixed. That is, the travel provided by the guide groove 4 can compensate for the required length of the folding telescopic arm 21, which eliminates the need to make the folding telescopic arm 21 very long, thereby saving costs, improving reliability, and better concealing the folding telescopic arm 21. Moreover, the rolling cooperation between the guide groove 4 and the roller can reliably guide the sliding, and the front end face of the guide groove 4 can also play a limiting and locking role, preventing the telescopic arm from being pulled out excessively.

[0080] Although maintaining the shape of the folding telescopic arm 21 can be achieved by configuring the folding telescopic arm 21 of the telescopic part 20 as a multi-unit hinged X-shaped structure, in order to prevent accidental retraction when the folding telescopic arm 21 is extended, a step portion 11 can be provided on the small table body 20, and a protrusion 220 can be provided on the transverse connecting rod 22 of the telescopic part 20. See details. Figure 8 , Figure 15 The rear end of the small table body 10 is provided with a stepped portion 11 that is recessed from the upper surface in the thickness direction. The transverse connecting rod 22 of the telescopic part 20 has a protrusion 220 that extends downward further than the folding telescopic arm 21. The protrusion 220 can engage with the stepped portion 11. It should be noted that since the rear movable end 24 is connected to both ends of the transverse connecting rod 22, the shape of the rear movable end 24 can match the transverse connecting rod 22, thus also having a corresponding protrusion. Through the protrusion 220 and the stepped portion 11, there is an overlap amount ch between the transverse connecting rod 22 and the small table body 10 (see...). Figure 15 When the small table body 10 is in the use position, the locking cooperation between the protrusion 220 and the step 11 can limit the movement of the telescopic part 20 towards the front of the vehicle, thus preventing the folding telescopic arm 21 from retracting unnecessarily due to accidental touch or misoperation, and ensuring reliability.

[0081] Similar to the step portion 11, recessed portions 15 can be formed on both sides of the lateral side of the small table body 10. The depth of the recesses can be the same as that of the step portion 11, so that the bottom surfaces of the step portion 11 and the recessed portions 15 are flush, and the retractable portion 20 can be provided within the recessed portion 15. However, it is understood that the recessed portion 15 is not necessary and may not be provided.

[0082] The baffle portion 30 and its combination with the small table body 10 and the telescopic portion 20 will be described below.

[0083] like Figure 8, Figure 17 , Figure 18 , Figure 19 As shown, the baffle portion 30 includes: a pair of lateral baffles 31, which are fixed to the lower ends of a pair of folding telescopic arms 21 in a one-to-one correspondence; and a transverse baffle 32, which is attached to the lower end of a transverse connecting rod 22. Each of the lateral baffles 31 and the transverse baffle 32 has a first adhesive portion 33 at its lower end. The small table body 10 has a second adhesive portion 13 on its upper surface at a position corresponding to the telescopic portion 20. The first adhesive portion 33 and the second adhesive portion 13 can adhere to and separate from each other. See also... Figure 17 The side baffle 31 and the folding telescopic arm 21 can be fixedly connected via an extension of the end hinge assembly 42 at the lower end of each rod 41. See Figure 19 The upper end of the transverse baffle 32 can also be provided with a first adhesive part 33 for bonding with the transverse connecting rod 22. The small table body 10 and the transverse baffle 32 are bonded together by the first adhesive part 33 and the second adhesive part 13. The first adhesive part and the second adhesive part are made of a re-adhesive material, such as hook and loop fasteners.

[0084] As described above, when the retractable part 20 is stacked on the small table body 10 under normal use, the retractable part 20 with the baffle part 30 at the lower end forms an enclosure around the outer edge of the small table body 10, which will not encroach on the storage space of the small table body 10 and ensure the normal storage needs of the small table body 10. Meanwhile, the cooperation between the first adhesive part 33 and the second adhesive part 13 can firmly adhere the lower ends of the side baffle 31 and the transverse baffle 32 to the upper surface of the small table when the small table body 10 is in the normal use position, ensuring that the baffle part 30 is reliably connected in a folded state, without loosening or interfering with the placement and retrieval of items; when the small table body 10 is passively rotated to the storage position by user operation, the first adhesive part 33 and the second adhesive part 13 separate, without hindering the rotation and retraction of the small table; when the small table body 10 is triggered to actively rotate to the storage position due to a vehicle collision, the adhesion of the first adhesive part 33 and the second adhesive part 13 allows the side baffle 31 and the transverse baffle 32 to unfold smoothly, thereby precisely enclosing the retractable part 20 and the small table body 10 to form a lateral and rear protective structure for the storage space, effectively improving the stability of the items and ensuring the reliable triggering of the protective function. Furthermore, the retractable portion 20 enclosing the outer edge of the small table body 10 also serves to a certain extent to limit and restrict the placed items, preventing them from accidentally falling. On the other hand, when the small table body 10 rotates actively, the folding telescopic arm 21 formed by the outer edge of the small table body 10 maximizes the range of the receiving space formed together with the baffle, thereby reliably holding various items placed on the small table body 10 and preventing the items from impacting the human body.

[0085] like Figure 6 , Figure 15 , Figures 21-22 As shown, the small table body 10 is connected to the seat back 2 via a rotating hinge 50. The rotating hinge 50 includes: a fixed leaf plate 51 fixed to the seat back 2; a movable leaf plate 52 fixed to the lower surface of the small table body 10; and a pin 53 connecting the fixed leaf plate 51 and the movable leaf plate 52. The small table body 10 also includes a motor 60. The output shaft of the motor 60 is connected to the pin 53 via a control shaft 61, thereby driving the pin 53 to rotate forward and backward, and thus driving the small table body 10 to switch between a storage position and a use position. In addition, a groove 14 is provided in the middle of the rear of the bottom surface of the small table body 10. Therefore, when the small table body 10 rotates downward and retracts into the interior of the recessed platform 5, interference between the motor 60 and the small table body 10 can be avoided.

[0086] The small table device of the first embodiment of this disclosure has been basically described above. The use of the small table device will now be described.

[0087] When not in use, the small table device is not used as a small table. The small table body 10 rotates downward and retracts into the recessed platform 5 at the rear of the front seat back 2. At the same time, the folding telescopic arm 21 of the telescopic part 20, together with the baffle part 30 below, will also fold and retract into the telescopic arm retraction cavity 3 provided at the rear of the seat back 2.

[0088] In normal use, the user issues a command via the operating switch, and the small table body 10 will rotate upwards to a horizontal position for use as the main load-bearing surface. Simultaneously, the telescopic part 20 will extend backwards. It should be noted that because there is a longitudinal overlap ch between the small table body and the transverse connecting rod 22, to properly open and use the small table device, the folding telescopic arm 21 must first be pulled out, and then the small table body 10 must be flipped upwards. After the folding telescopic arm 21 is pulled out, the side baffle 31 fixed below it is also pulled out. The small table body 10, now in a horizontal position, will then contact and adhere to the transverse connecting rod 22 and the first adhesive part 33 below the folding telescopic arm 21, thus completing the connection and fixation of the upper and lower three-layer structure of the small table device (i.e., the upper telescopic part 20, the middle baffle part 30, and the lower small table body 10). The small table body can then be used to place items.

[0089] When the active protection mode is triggered, the motor 60 is activated, driving the control shaft 61 to rotate. The control shaft 61 then transfers power to the small table body 10 via the hinges 50 on both sides, causing the small table body 10 to rotate downwards and retract into the recessed platform 5. As the small table body 10 rotates downwards, it provides tension to the flexible baffle 30 located between the upper retractable part 20 and the lower small table body 10, causing it to unfold downwards. This provides a buffer and receiving area for items falling from the small table body 10.

[0090] <Second Embodiment>

[0091] This disclosure provides a second embodiment of an active protection system for a vehicle seat 1, including a tray table device as described in the first embodiment; a sensing unit that senses whether the absolute value of the vehicle's acceleration is greater than a preset threshold and whether the tray table body 10 is in a usage position, or senses whether the acceleration of an occupant behind the tray table body 10 relative to the tray table body 10 is greater than a preset threshold and whether the tray table body is in a usage position; and a control unit that, when sensing that the absolute value of the acceleration or the acceleration is greater than the preset threshold and the tray table body 10 is in a usage position, controls the tray table body 10 to move from the usage position (see [reference]). Figure 1 Rotate downwards to switch to the storage position (see...) Figure 3 ).

[0092] The sensing unit can be various vehicle sensors such as vehicle radar, cameras, and vehicle speed sensors, and the controller can be the vehicle ECU. The vehicle system receives the monitoring signals transmitted back by the sensing unit in real time and analyzes the collected signals through a preset program in the vehicle ECU that constitutes the controller. When an emergency situation that can trigger the tray table device is determined (the absolute value of the vehicle's acceleration is greater than a preset threshold, or the acceleration of the occupant behind the tray table body 10 relative to the tray table body 10 is greater than a preset threshold), such as emergency braking or a risk of vehicle collision, the vehicle ECU will send a command signal to activate the active safety protection system of the tray table device. As described in the first embodiment, the motor 60 is activated and drives the tray table body 10 to rotate downward and retract into the recessed platform 5, while the baffle part 30 is deployed accordingly.

[0093] <Third Embodiment>

[0094] The third embodiment of this disclosure provides a vehicle including the small table device of the first embodiment.

[0095] Since the active protection system of the second embodiment and the vehicle of the third embodiment are both equipped with the small table device of the first embodiment, they can also achieve the corresponding technical effects of the small table device of the first embodiment, which will not be elaborated here.

[0096] <Other Embodiments>

[0097] In the above embodiment, the upper end of the retractable part 20 is higher than the upper surface of the small table body 10. However, by adjusting the recessed depth of the step part 11 and the recessed part 15 or adjusting the height of the retractable part 20 in the vertical direction, the upper end of the retractable part 20 can be made to be basically flush with the upper surface of the small table body 10, thereby ensuring the overall flatness.

[0098] In the above embodiment, one motor 60 is provided, but synchronous dual motors can also be provided.

[0099] In the above embodiment, the front-end moving end 23 is slidable, but it can also be designed to be fixed.

[0100] In the above embodiment, the protrusion 220 protrudes entirely from the lower end of the transverse link 22. However, the protrusion 220 may also protrude partially from the lower end of the transverse link 22. In this case, for example, multiple discrete protrusions may be provided, or only one protrusion may be provided at the middle position.

[0101] In the above embodiment, the telescopic part 20 is described as a folding telescopic arm that is pulled back from the seat back 2. However, this is not limiting. For example, the telescopic part 20 can be configured as a horizontally extending U-shaped frame that flips upward and retracts into the seat back, and opens downward and stacks on the outer periphery of the small table body 10. The two arms of the U-shaped frame can be telescopic sleeves, multiple series-connected hinged rods, etc. The baffle part 30 can be subsequently tied, hooked or glued to the bottom of the U-shaped frame and glued to the small table body 10.

[0102] In the above embodiments, the folding telescopic arm 21 is described using an X-shaped structure with multiple units hinged together. However, this is not a limitation. For example, the folding telescopic arm 21 can be a telescopic sleeve, multiple connecting rods connected in series, etc. The baffle part 30 can be subsequently tied, hooked or glued to the bottom of the U-shaped frame and glued to the small table body 10.

[0103] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can occur depending on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A small table device for a vehicle seat (1), characterized in that, include: The small table body (10) is rotatably disposed on the back side of the seat back (2), and has a storage position stacked on the seat back (2) and a use position that rotates upward from the storage position to a basically horizontal posture, so that the small table body (10) can actively or passively switch between the storage position and the use position. A retractable part (20) is retractably disposed on the back side of the seat back (2), located above the small table body (10), and has a retracted position that is housed within the seat back (2) and an extended position that extends horizontally backward from the back of the seat back (2); and A flexible baffle (30) is provided on the telescopic part (20) and is connected between the telescopic part (20) and the small table body (10) in a folded state when the small table body (10) is in the use position. It can be unfolded between the telescopic part (20) and the small table body (10) from the folded state as the small table body (10) rotates from the use position to the storage position, thereby forming a storage space by the telescopic part (20), the baffle (30) and the small table body (10).

2. The small table device according to claim 1, characterized in that, The retractable part (20) includes a pair of folding telescopic arms (21) extending in the front-rear direction of the vehicle and a transverse link (22) connecting the rear ends of the pair of folding telescopic arms (21), the pair of folding telescopic arms (21) having a front end located on the side of the seat back and a rear end opposite to the front end; The baffle portion (30) includes: a pair of side baffles (31), which are fixed to the lower ends of the pair of folding telescopic arms (21) in a one-to-one correspondence manner; and a transverse baffle (32), which is attached to the lower end of the transverse connecting rod (22), and each of the pair of side baffles (31) and the transverse baffle (32) is provided with a first adhesive portion (33) at its lower end. The small table body (10) has a second adhesive part (13) on its upper surface at a position corresponding to the retractable part (20). The first adhesive part (33) and the second adhesive part (13) can adhere to each other and separate from each other.

3. The small table device according to claim 2, characterized in that, The retractable part (20) is configured such that the front ends of the pair of folding telescopic arms (21) are located above the left and right ends of the small table body (10), so that when the small table body (10) is in the use position, the pair of folding telescopic arms (21) extend from the front ends and overlap the left and right ends of the small table body (10), and the pair of folding telescopic arms (21) are configured to extend at least to the point that the transverse link (22) is located on the rear end of the small table body.

4. The small table device according to any one of claims 1, characterized in that, The arm body (210) of each of the folding telescopic arms (21) of the telescopic part (20) is a multi-unit hinged X-shaped structure, which is formed by multiple X-shaped basic units (40) connected in series through end hinge components (42). The X-shaped basic unit is formed by two rods (41) of equal length hinged at the midpoint, and each X-shaped basic unit (40) deforms in coordination to realize the linear extension and retraction of the folding telescopic arm (21).

5. The small table device according to claim 4, characterized in that, Each of the folding telescopic arms (21) of the telescopic part (20) further includes movable ends (23, 24) respectively provided at the front end and rear end of the arm body (210), that is, a front movable end (23) provided at the front end and a rear movable end (24) provided at the rear end. The front movable end (23) and the rear movable end (24) are respectively box-shaped with openings (25), such that the front end and the rear end of the arm body (210) are respectively received in the corresponding movable ends (23, 24) through the openings (25), and At least one of the inner surfaces of the left and right side walls of the front moving end (23) and the rear moving end (24) is provided with an arc-shaped groove (26). The radius of the arc-shaped groove is the distance from the midpoint of the rod (41) of the X-type base unit (40) to the end hinge assembly, so that the two end hinge assemblies (42) at the outermost ends of the two X-type base units (40) at the front and rear ends of the arm body (210) can extend into and engage in the arc-shaped groove (26) and slide in the arc-shaped groove (26) as the arm body (210) extends and retracts.

6. The small table device according to claim 5, characterized in that, Also includes: The telescopic arm retraction cavity (3) is recessed into the back side of the seat back (2), so that the folding telescopic arm (21) in the retracted position can be stored in the telescopic arm retraction cavity (3). The left and right sides and / or the upper and lower sides of the telescopic arm retraction cavity (3) are respectively formed with guide grooves (4) extending in the front-rear direction of the vehicle, and the rear end (4A) of the guide groove is a closed end and is separated from the back of the seat back (2) by a predetermined distance. Rollers (230) are respectively provided on the left and right outer surfaces and / or the upper and lower outer surfaces of the front moving end (23) of the folding telescopic arm (21). The rollers can be embedded in the guide groove (4) and slide back and forth along the guide groove (4).

7. The small table device according to any one of claims 1-6, characterized in that, The rear end of the small table body (10) is provided with a step (11) that is recessed from the upper surface in the thickness direction. The transverse connecting rod (22) of the telescopic part (20) has a protrusion (220) that extends downward more than the folding telescopic arm (21). The protrusion (220) can be engaged with the step (11).

8. The small table device according to any one of claims 1-7, characterized in that, The small table body (10) is connected to the seat back (2) via a rotating hinge (50). The rotating hinge (50) includes: a fixed leaf plate (51) fixed to the seat back (2); a movable leaf plate (52) fixed to the lower surface of the small table body (10); and a pin (53) connecting the fixed leaf plate (51) and the movable leaf plate (52). The small table body (10) also includes a motor (60), the output shaft of which is connected to the pin (53), thereby driving the pin (53) to rotate in both directions, and thus driving the small table body (10) to switch between the storage position and the use position.

9. An active protection system for vehicle seats, characterized in that, include: The small table device according to any one of claims 1-8; The sensing unit senses whether the absolute value of the vehicle's acceleration is greater than a preset threshold and whether the small table body is in the usage position, or senses whether the acceleration of the occupant behind the small table body relative to the small table body is greater than a preset threshold and whether the small table body is in the usage position. and When the control unit senses that the absolute value of the acceleration or the acceleration is greater than a preset threshold and the small table body is in the use position, it controls the small table body to rotate downward from the use position to switch to the storage position.

10. A vehicle, characterized in that, include: The small table device according to any one of claims 1-8.

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