Rear seat and vehicle

Abstract

The application discloses a rear seat and a vehicle, and relates to the technical field of automobile seats. The rear seat comprises a seat cushion, a seat backrest rotatably installed on the seat cushion, and a middle safety belt mechanism. The seat backrest has a sitting mode and a bed mode. The middle safety belt mechanism comprises a middle storage assembly installed on the seat backrest, a middle safety belt connected to the storage assembly, a middle lock tongue connected to the safety belt, and a middle belt buckle arranged on the seat cushion. In the bed mode, the middle safety belt is stored in the middle storage assembly, and the middle lock tongue is temporarily stored on the back side of the seat backrest. The application can effectively solve the technical problem that the safety belt mechanism interferes with the comfort in the bed mode, and improves the flatness and comfort of the rear space.

Description

Technical Field

[0001] This invention belongs to the field of automotive seat technology, and particularly relates to a rear seat and vehicle. Background Technology

[0002] With the rapid development of the automotive industry and the increasing demands of consumers for driving and riding experiences, automotive interior design is evolving towards greater multifunctionality and comfort. As a crucial passenger space within the vehicle, the rear seats not only fulfill the basic function of daily passenger transport but are also increasingly being used in more diverse scenarios. In modern passenger vehicle design, rear seats typically feature an adjustable structure, allowing for switching between an upright seating mode and a fold-down bed mode according to actual needs.

[0003] However, in existing rear seat technology solutions, when the seat is switched from sitting mode to bed mode (the seat back folds back and flattens out to be roughly coplanar with the seat cushion), the seat belt mechanism located in the middle position often cannot achieve ideal concealment. Since the middle seat belt and its locking tongue assembly are usually suspended or exposed on the seat surface, these protruding hard parts will disrupt the flatness of the bed surface after the seat is flattened to form a continuous plane, causing users to experience obvious foreign body sensation and discomfort when using the bed function. Summary of the Invention

[0004] This invention provides a rear seat and vehicle that can effectively solve the technical problem of seat belt mechanism interfering with comfort in bed mode while ensuring the safety restraint function of the middle passenger.

[0005] To address the aforementioned problems, one embodiment of the present invention provides a rear seat, comprising: Seat cushion; The seat back is rotatably mounted to the seat cushion so that the seat back has a sitting mode and a bed mode. The center seatbelt mechanism includes a center storage assembly, a center seatbelt, a first center latch, a second center latch, a first center buckle, and a second center buckle. The center storage assembly is installed inside the seat back. One end of the center seatbelt passes through the top of the seat back and is connected to the center storage assembly. The first center latch is connected to the end of the center seatbelt away from the center storage assembly. The second center latch is sleeved on the center seatbelt and is movable relative to the center seatbelt. The first center buckle and the second center buckle are both located on the seat cushion and are spaced apart. When the seat back is in the bed mode, the middle seat belt can be stored in the middle storage component, and both the first middle locking tongue and the second middle locking tongue can be temporarily stored on the back side of the seat back.

[0006] As a further improvement to the above technical solution: In one optional embodiment, the rear seat further includes a headrest, which is mounted on the top of the seat back and has a gap between it and the seat back. When the seat back is in the bed-like mode, both the first and second intermediate latches pass through the gap and are temporarily stored on the back side of the seat back.

[0007] In an optional embodiment, when both the first intermediate latch and the second intermediate latch are temporarily stored in the back of the seat back through the gap, the seat headrest and the seat back cooperate to cover the first intermediate latch and the second intermediate latch.

[0008] In one optional embodiment, when the seat back is in the sitting mode, the first center latch can be inserted into the first center buckle, and the second center latch can be inserted into the second center buckle. Alternatively, when the seat back is in the seating mode, the center seat belt can be stored in the center storage assembly, and both the first center latch and the second center latch can be stored at the top of the seat back.

[0009] In one alternative embodiment, the first intermediate buckle and the second intermediate buckle are respectively located on opposite sides of the seat cushion.

[0010] In one optional embodiment, the back of the seat back is provided with a fixing part, and when the seat back is in the bed mode, both the first intermediate locking tongue and the second intermediate locking tongue are fixed to the fixing part.

[0011] In one optional embodiment, the fixing part includes a first magnetic attraction part and a second magnetic attraction part; When the seat back is in the bed-like mode, the first center latch is magnetically attracted to the first magnetic attraction part, and the second center latch is magnetically attracted to the second magnetic attraction part.

[0012] In one optional embodiment, the first magnetic attraction portion and the second magnetic attraction portion are spaced apart, and / or the extending direction of the first magnetic attraction portion is set at an angle to the extending direction of the second magnetic attraction portion.

[0013] In one optional embodiment, the fixing part includes a first insertion slot and a second insertion slot; When the seat back is in the bed mode, the first intermediate locking tongue is inserted into the first insertion slot, and the second intermediate locking tongue is inserted into the second insertion slot.

[0014] In one alternative embodiment, the fixing part includes a first hook and a second hook; When the seat back is in the bed mode, the first intermediate locking tongue is attached to the first hook, and the second intermediate locking tongue is attached to the second hook.

[0015] In one optional embodiment, the upper surfaces of both the first and second intermediate buckles are not higher than the upper surface of the seat cushion.

[0016] In one alternative embodiment, the seat cushion has at least three seats, with the center seatbelt mechanism located in the middle seat.

[0017] In one alternative embodiment, the rear seat further includes two side buckles, which are installed on the seat cushion and located on the side of the seat near the center, for engaging with the side locking tongue of the side seat belt mechanism.

[0018] In one optional embodiment, the side buckle is disposed adjacent to the first intermediate buckle or the second intermediate buckle, and the latch hole of the side buckle is located on the side away from the first intermediate buckle or the second intermediate buckle, and the latch hole of the first intermediate buckle or the second intermediate buckle is located on the side away from the side buckle.

[0019] In one alternative embodiment, both the first intermediate buckle and the second intermediate buckle can be rotatably mounted on the seat cushion.

[0020] On the other hand, embodiments of the present invention provide a vehicle including a passenger compartment and a rear seat as described above, the rear seat being installed in the passenger compartment.

[0021] As a further improvement to the above technical solution: In one alternative embodiment, the vehicle further includes a side seatbelt mechanism mounted on the passenger compartment; The rear seat also includes a side buckle, which is installed on the seat cushion and located on one side of the seat. The side locking tongue of the side seat belt mechanism can be inserted into the side buckle.

[0022] The rear seat and vehicle provided in this invention offer at least the following advantages compared to existing technologies: This solution integrates a central storage component onto a rotatable seatback, along with dual central locking tongues and dual central buckles, creating a seatbelt management system adaptable to dual-mode switching. When the seat needs to be converted to a bed mode, the central seatbelt is retracted using the retracting action of the central storage component. Simultaneously, the first and second central locking tongues are temporarily stored on the back of the seatback, compactly concealing the potentially scattered locking tongues and seatbelt components within the seat structure. This avoids unevenness and discomfort caused by protruding seatbelt components in the bed mode. While ensuring driving safety, this solution significantly improves the flatness and comfort of the rear space in rest mode, optimizes the user experience for multi-functional vehicle scenarios, and enhances the overall integrity and aesthetics of the seat structure. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of the rear seat provided in one embodiment of the present invention; Figure 2 This is a cross-sectional view of the rear seat provided in one embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the middle seat belt mechanism of the rear seat in one embodiment of the present invention when it is retracted; Figure 4 This is a schematic diagram of the structure of the middle seat belt mechanism of the rear seat in one embodiment of the present invention when it is stowed. Figure 5 This is a structural schematic diagram of the center seat belt mechanism of the rear seat provided in one embodiment of the present invention; Figure 6 This is a structural schematic diagram of the rear seats in the seating mode according to one embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the middle latch and the side latch provided in one embodiment of the present invention.

[0025] The reference numerals in the accompanying drawings are as follows: 100 - Rear seat, 110 - Seat cushion, 120 - Seat backrest, 121 - Fixing part, 130 - Center seat belt mechanism, 131 - Center storage component, 132 - Center seat belt, 133 - First center latch, 134 - Second center latch, 135 - First center buckle, 136 - Second center buckle, 140 - Side buckle, 141 - Side latch, 150 - Seat headrest. Detailed Implementation

[0026] To make the technical problems solved, the technical solutions, and the beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0027] In the description of this invention, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0028] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] like Figures 1 to 7As shown, an embodiment of the present invention provides a rear seat 100, which includes a seat cushion 110, a seat back 120, a fixing part 121, and a center seat belt mechanism 130. The seat cushion 110 and the seat back 120 are rotatably mounted on the seat cushion 110 to provide a seating mode and a bed mode. The center seat belt mechanism 130 includes a center storage assembly 131, a center seat belt 132, a first center locking tongue 133, a second center locking tongue 134, a first center buckle 135, and a second center buckle 136. The center storage assembly 131 is installed inside the seat back 120, and one end of the center seat belt 132 passes through the top of the seat back 120 and connects to the center storage assembly 131.

[0030] The first center latch 133 is connected to the end of the center seat belt 132 away from the center storage assembly 131. The second center latch 134 is fitted onto the center seat belt 132 and is movable relative to the center seat belt 132. The first center buckle 135 and the second center buckle 136 are both provided on the seat cushion 110 and are spaced apart.

[0031] The seat cushion 110, as the basic support component of the rear seat 100, is mainly used to support the weight of the occupants and provide a comfortable seating contact surface. Structurally, the seat cushion 110 is typically fixedly connected to the vehicle chassis, with an internal seat frame filled with elastic materials such as foam sponge, and an external fabric covering. Its upper surface is ergonomically designed to ensure comfort during long journeys. The seat cushion 110 also provides a mounting base for the center buckle of the center seatbelt mechanism 130.

[0032] The seat backrest 120 is rotatably mounted to the seat cushion 110, allowing the seat backrest 120 to have a seating mode and a bed mode. In this embodiment, the seat backrest 120 is rotatably connected to the rear of the seat cushion 110 via a hinge mechanism or a pivot assembly, allowing the seat backrest 120 to be angled relative to the seat cushion 110. When the seat backrest 120 is in an upright or near-upright position, the rear seat 100 is in the seating mode, allowing occupants to sit normally; when the seat backrest 120 is folded back and laid flat to a position approximately coplanar with the seat cushion 110, the rear seat 100 switches to the bed mode, which can cooperate with the front seats or other rear seats to form a flat bed surface.

[0033] The center seatbelt mechanism 130 is a safety restraint system located in the middle of the rear seat 100, used to provide safety protection for the occupant in the middle position. The center retractable assembly 131 is installed inside the seat back 120, and typically houses the center seatbelt 132, equipped with a retractor spring or motor to enable automatic or manual retraction of the center seatbelt 132. The center seatbelt 132 is a flexible webbing, one end of which passes through the top of the seat back 120 and connects to the center retractable assembly 131, while the other end extends and connects to a first center latch 133 and a second center latch 134. The first center buckle 135 and the second center buckle 136 are fixedly installed at appropriate positions on the seat cushion 110, typically on one side or at the rear of the seat cushion 110 near the connection point to the seat back 120, for easy insertion by the occupant. In terms of structural layout, the middle storage component 131 is integrated into the seat back 120 instead of the traditional body pillar or the side of the seat cushion. This design makes full use of the space of the seat back 120, making the exit position of the middle seat belt 132 more flexible. Especially in the bed mode, as the seat back 120 is laid flat, the middle seat belt 132 can move and be stored accordingly, avoiding the accumulation of long belts on the bed surface.

[0034] The first intermediate locking tongue 133 is connected to the end of the intermediate seat belt 132 away from the intermediate storage component 131, and the second intermediate locking tongue 134 is fitted onto the intermediate seat belt 132 and can move relative to the intermediate seat belt 132. The first intermediate locking tongue 133, as an end fixing member, is firmly connected to the free end of the intermediate seat belt 132, playing a primary role in tensioning and anchoring; the second intermediate locking tongue 134, as a sliding adjustment member, is fitted onto the webbing of the intermediate seat belt 132 and can slide along the webbing to a suitable position according to the body shape differences of the intermediate passenger. This dual-locking tongue cooperative layout breaks through the limitations of traditional single-point restraint. In riding mode, the first intermediate locking tongue 133 and the second intermediate locking tongue 134 respectively perform multi-point positioning on different parts of the passenger's torso, effectively avoiding the risk of slippage or overturning caused by single-point force on the webbing during emergency braking, significantly improving the stability of the restraint system and the safety of the occupants.

[0035] The first intermediate buckle 135 and the second intermediate buckle 136 are spaced apart. The first intermediate buckle 135 and the second intermediate buckle 136 are respectively installed on the seat cushion 110 at predetermined positions corresponding to the middle seat. The distance between them can be set according to ergonomic parameters; the specific value is not specifically limited in this embodiment. The spaced-apart double buckle structure provides an independent locking interface for the aforementioned double locking tongues, ensuring that the first intermediate locking tongue 133 and the second intermediate locking tongue 134 can be simultaneously locked, thereby forming a stable restraint area on both sides of the middle passenger's body.

[0036] like Figure 4As shown, when the seat back 120 is in the seating mode and a passenger is seated, the first center latch 133 can be engaged with the first center buckle 135, and the second center latch 134 can be engaged with the second center buckle 136. In this state, the center seat belt 132 securely restrains the passenger to the seat. The first center latch 133 cooperates with the first center buckle 135, and the second center latch 134 cooperates with the second center buckle 136 to achieve three-point fixation of the seat belt. Together, they provide all-around protection for the passenger's torso.

[0037] like Figure 5 As shown, when the seat back 120 is in the sitting mode and no one is sitting on it, the middle seat belt 132 can be stored in the middle storage component 131, and the first middle locking tongue 133 and the second middle locking tongue 134 can both be stored in the top of the seat back 120.

[0038] like Figure 6 As shown, when the seat back 120 is in bed mode, both the first center latch 133 and the second center latch 134 are temporarily stored on the back side of the seat back 120. When the seat back 120 is folded back and laid flat with the seat cushion 110 to form a bed, in order to prevent loose latches from injuring passengers or affecting the flatness of the bed surface, this application has designed a convenient storage solution. The user only needs to pull the first center latch 133 and the second center latch 134 out of their corresponding buckles and pass them together around the top of the seat back 120 and store them on the back side of the seat back 120 to neatly store the center seat belt mechanism 130. This eliminates the safety hazard of direct hard contact between the metal latches and the human body, and improves the comfort and neatness in bed mode.

[0039] Through the above technical solution, this application achieves an optimized balance between passenger safety and bed comfort in the rear seats. By employing a unique layout of double locking tongues (first center locking tongue 133 and second center locking tongue 134) in conjunction with first center buckle 135 and second center buckle 136, not only is the restraint stability and safety of the middle passenger significantly improved in the seating mode, but also, by uniformly storing the double locking tongues in the fixing part 121 in the bed mode, interference of the locking tongues on the bed surface is effectively avoided, improving the space utilization and user experience after the bed is formed.

[0040] In an alternative embodiment, such as Figure 5 As shown, the rear seat 100 also includes a headrest 150, which is installed on the top of the seat back 120 and has a gap between it and the seat back 120. When the seat back 120 is in bed mode, the first intermediate locking tongue 133 and the second intermediate locking tongue 134 pass through the gap and are temporarily stored on the back side of the seat back 120.

[0041] When the seat back 120 is folded back and laid flat to form a bed with the seat cushion 110, a convenient storage solution is designed to prevent loose locking tongues from injuring passengers or affecting the flatness of the bed surface. Users simply need to pull the first intermediate locking tongue 133 and the second intermediate locking tongue 134 from their corresponding buckles, and together they pass over the top of the seat back 120 and through the gap between the headrest 150 and the seat back 120, storing them neatly on the back side of the seat back 120. This eliminates the safety hazard of direct hard contact between the metal locking tongue and the human body, improving comfort and neatness in the bed configuration. When both the first intermediate locking tongue 133 and the second intermediate locking tongue 134 are temporarily stored on the back side of the seat back 120 through the gap, the headrest 150 and the seat back 120 cooperate to cover the first intermediate locking tongue 133 and the second intermediate locking tongue 134. In an optional embodiment, such as... Figure 1 and Figure 4 As shown, the first center buckle 135 and the second center buckle 136 are respectively located on opposite sides of the seat cushion 110. When the seat back 120 is in the seating mode and a person is seated, the first center latch 133 can be inserted into the first center buckle 135, and the second center latch 134 can be inserted into the second center buckle 136. In this state, the center seat belt 132 securely restrains the passenger to the seat. The first center latch 133 cooperates with the first center buckle 135, and the second center latch 134 cooperates with the second center buckle 136 to achieve three-point fixation of the seat belt. Together, they provide all-round protection for the passenger's torso.

[0042] In an alternative embodiment, such as Figure 1 , Figure 2 and Figure 6 As shown, a fixing part 121 is provided on the back side of the seat back 120. When the seat back 120 is in the bed mode, the first intermediate locking tongue 133 and the second intermediate locking tongue 134 are both fixed to the fixing part 121.

[0043] The fixing part 121 is located on the back side of the seat back 120, that is, the side of the seat back 120 away from the occupant. In the sitting mode, the fixing part 121 is located behind the seat back 120 and is usually invisible or in a non-working state; while in the bed mode, the seat back 120 is flipped backward with its back side facing down. The function of the fixing part 121 is to provide a temporary fixing point in the bed mode. Its specific structural form is not limited, such as it can be a slot, hook, magnetic seat, or Velcro adhesive area, as long as it can achieve detachable fixing of the central locking tongue. This design cleverly utilizes the spatial position change of the seat back 120 during mode switching, placing the fixing part 121 on the back side, which does not affect the appearance and function in the sitting mode, and can also store the locking tongue nearby in the bed mode.

[0044] When the seat back 120 is in bed mode, the center seat belt 132 is stored in the center storage assembly 131, and the center latch is temporarily stored and fixed to the fixing part 121. In this mode, the seat back 120 is folded back flat, and the previously worn center seat belt 132 needs to be released. At this time, the occupant first pulls the center latch out of the center buckle, and then the center storage assembly 131 rolls the center seat belt 132 back under pretension or active drive, storing it on the seat back 120, no longer occupying bed space. At the same time, in order to prevent the center latch from swinging freely in bed mode, injuring the occupant, or generating noise, the center latch is fixed to the fixing part 121 on the back side of the seat back 120. This temporary storage and fixing method ensures that the center latch remains stable in bed mode and does not protrude from the bed surface, thus ensuring the flatness of the bed surface and the comfort of use.

[0045] Through the above technical solution, by setting a fixing part on the back side of the seat back, and temporarily storing and fixing the center latch to this fixing part in the bed mode, while storing the center seat belt in the center storage component installed on the seat back, discomfort or injury to the user caused by the center seat belt and its latch protruding in the bed mode is effectively avoided, significantly improving the comfort of using the bed and the flatness of the bed surface. In addition, by integrating the center storage component into the seat back, a compact design of the seat belt system and the seat body is achieved, making full use of existing space and avoiding additional space occupation. At the same time, the temporary positioning of the latch by the fixing part effectively prevents the latch from shaking, making abnormal noises or scratching during vehicle operation, improving the overall quality of the vehicle.

[0046] In an alternative embodiment, such as Figure 2 and Figure 6 As shown, the fixing part 121 includes a first magnetic attraction part and a second magnetic attraction part. The first magnetic attraction part and the second magnetic attraction part can be made of permanent magnets (such as neodymium iron boron magnets or ferrite magnets) or electromagnets, and their shapes can be designed as circular, rectangular, or strip-shaped according to the installation space and attraction force requirements. When the seat back 120 is in the bed mode, the first center locking tongue 133 is magnetically attracted to the first magnetic attraction part, and the second center locking tongue 134 is magnetically attracted to the second magnetic attraction part.

[0047] The aforementioned magnetic connection method utilizes the attraction of a magnetic field to ferromagnetic materials, allowing the first intermediate latch 133 and the second intermediate latch 134 to automatically adhere and position themselves when near the first and second magnetic suction parts. This eliminates the need for precise alignment or complex insertion and removal by the user, thus improving the convenience and efficiency of latch storage. Furthermore, the magnetic fixation is non-rigid; when reverting to the seated position, the user only needs to apply appropriate external force to detach the first intermediate latch 133 and the second intermediate latch 134 from the first and second magnetic suction parts, simplifying the operation and enhancing the user experience.

[0048] By employing a first magnetic attraction part and a second magnetic attraction part to respectively attract the first intermediate locking tongue 133 and the second intermediate locking tongue 134, the technical problem of having nowhere to place the intermediate locking tongue or the cumbersome operation of storing it in the bed mode is solved. This design ensures that the first intermediate locking tongue 133 and the second intermediate locking tongue 134 can be stably restrained on the back side of the seat back 120 in the bed mode, preventing them from shaking on the bed surface or injuring passengers, and improving the flatness and comfort of the bed mode; in addition, the self-aligning characteristic of the magnet reduces the difficulty of the user's operation of storing the locking tongue, making the switching between the rear seat and the bed mode smoother.

[0049] In an alternative embodiment, such as Figure 2 As shown, the first magnetic attraction part and the second magnetic attraction part are spaced apart, and / or the extending direction of the first magnetic attraction part is at an angle to the extending direction of the second magnetic attraction part, so as to facilitate fixing the first intermediate locking tongue 133 and the second intermediate locking tongue 134 to the first magnetic attraction part and the second magnetic attraction part respectively. For example, the first magnetic attraction part faces the back of the seat back 120, and the second magnetic attraction part faces the top of the seat back 120. Of course, it can be understood that the first magnetic attraction part and the second magnetic attraction part can also be integrally set.

[0050] In another optional embodiment, the fixing part 121 includes a first insertion slot and a second insertion slot. When the seat back 120 is in the bed-like mode, the first intermediate locking tongue 133 is inserted into the first insertion slot, and the second intermediate locking tongue 134 is inserted into the second insertion slot. The first insertion slot and the second insertion slot are used to mechanically limit and store the first intermediate locking tongue 133 and the second intermediate locking tongue 134 respectively when the seat back 120 is in the bed-like mode, preventing the locking tongues from shaking or producing abnormal noise in the bed-like mode, thereby improving the comfort experience of the occupants.

[0051] In practical implementation, the groove structure of the first and second insertion slots is adapted to the outer contours of the first intermediate locking tongue 133 and the second intermediate locking tongue 134. For example, they can be set as rectangular, circular, or other irregular shapes to ensure a good fit when they are engaged. To enhance the stability of the connection, the inner walls of the first and second insertion slots can be provided with damping structures, elastic buckles, or interference fit designs. When the first intermediate locking tongue 133 and the second intermediate locking tongue 134 are inserted into the corresponding insertion slots, the friction or mechanical locking force generated by the contact surface firmly holds the locking tongues in the slots, thereby preventing them from unexpectedly disengaging or shifting under vehicle vibration. This fixing method based on insertion is not only simple in structure and low in manufacturing cost, but also has high reliability and can meet the needs of frequent seat mode switching. When it is necessary to return to the sitting mode, the user only needs to apply appropriate force to separate the first intermediate locking tongue 133 and the second intermediate locking tongue 134 from the first and second insertion slots, making the operation convenient and smooth.

[0052] Through the above-described configuration, the first and second interlocking slots effectively store and secure the first intermediate locking tongue 133 and the second intermediate locking tongue 134. This structure solves the technical problem of the locking tongue being suspended or having nowhere to be placed in the bed configuration, preventing the exposed locking tongue from directly contacting the occupant's body and causing discomfort. Simultaneously, the physical limiting effect of the interlocking slots effectively suppresses the free swinging of the locking tongue during driving and the resulting impact noise, significantly improving the quietness and overall comfort of the rear seats in the bed configuration.

[0053] In another alternative embodiment, the fixing part 121 includes a first hook and a second hook. The first hook and the second hook are used to suspend and fix the first intermediate locking tongue 133 and the second intermediate locking tongue 134 respectively when the seat back 120 is in bed mode. Specifically, the first hook and the second hook can be set at appropriate positions on the back side of the seat back 120, and their shape and structure are configured to support and restrict the corresponding locking tongues to prevent the locking tongues from accidentally falling off or producing abnormal noises during vehicle operation.

[0054] When the seat backrest 120 is switched to bed mode, the first intermediate locking tongue 133 is hooked onto the first hook, and the second intermediate locking tongue 134 is hooked onto the second hook. During this process, utilizing the metal rings, connecting holes, or other hookable structural features of the first and second intermediate locking tongues 133 and 134, they are inserted into or snapped into the bent portions of the first or second hooks, thereby achieving temporary storage and positioning of the locking tongues. This hook-type fixing method mainly relies on the weight of the locking tongues themselves and the friction between the hooks and the contact surfaces of the locking tongues to maintain stability. Users only need to align the locking tongues with the hooks and insert them; the action is intuitive and convenient, without the need for complex insertion or additional pressing and locking steps. The specific structural forms of the first and second hooks can be selected according to actual design requirements. For example, they can be simple L-shaped hooks, J-shaped hooks, or complex hook structures with anti-detachment buckles, as long as a stable hanging function can be achieved. This application embodiment does not impose any special limitations on this.

[0055] Through the above technical solution, this application achieves convenient storage and fixation of the middle seat belt mechanism 130 in the bed-like mode. Due to the hook structure, the mold structure of the fixing part 121 is simple, with low manufacturing cost, and it is not prone to dust accumulation during daily use, facilitating cleaning and maintenance. Simultaneously, the suspension fixing method makes the locking tongue removal and placement process extremely smooth, allowing users to quickly retract and release the locking tongue when switching seat modes, significantly improving the user experience when switching between the rear seat's seating and bed-like modes. Furthermore, the hook structure has strong adaptability to the dimensional tolerances of the locking tongue, is compatible with locking tongues of different specifications, and has good versatility and interchangeability.

[0056] In an alternative embodiment, such as Figure 1 and Figure 4 As shown, the upper surfaces of the first center buckle 135 and the second center buckle 136 of the rear seat 100 are not higher than the upper surface of the seat cushion 110. Specifically, the center buckle being lower than the upper surface of the seat cushion 110 means that the top height of the center buckle is not higher than the horizontal level of the seating surface of the seat cushion 110. In practical applications, the center buckle can be completely recessed and installed inside the seat cushion 110, by creating corresponding mounting slots in the foam layer or cover of the seat cushion 110, so that the center buckle remains hidden or flush with the surface of the cushion when in operation; alternatively, a portion of the center buckle can be embedded in the seat cushion 110, with only the operating buttons or locking mechanisms slightly lower than or flush with the upper surface of the seat cushion 110.

[0057] In this embodiment, the center buckle includes a first center buckle 135 and a second center buckle 136, both of which are not higher than the upper surface of the seat cushion 110. This recessed or embedded design avoids the center buckle protruding from the surface of the seat cushion 110, thereby eliminating the foreign body sensation and pressure caused by the hard contact between the passenger's buttocks or thighs and the protruding buckle when sitting or lying down. This improves seating comfort, especially for passengers who sit for long periods of time, effectively reducing physical fatigue caused by concentrated local pressure. In addition, the recessed design of the center buckle also helps to maintain the flatness and integrity of the seat cushion 110, improving the utilization rate of the seat's internal space.

[0058] Through the above technical solution, this application achieves an optimized layout for the installation position of the center buckle. By setting the center buckle below the upper surface of the seat cushion 110 and using an embedded or recessed installation method, the problem of discomfort caused by protruding buckles in the prior art is effectively solved. This design significantly improves the feel and riding experience of the rear seat 100 without affecting the normal engagement and locking function of the center seatbelt mechanism 130, avoids interference with the passenger's body from the buckle, and enhances the comfort and ergonomics of the rear seats of the vehicle.

[0059] In an alternative embodiment, such as Figure 1 and Figure 4 As shown, the rear seat 100 includes a seat cushion 110 having at least three seats, with the center seatbelt mechanism 130 located in the middle seat.

[0060] The seat cushion 110 serves as the basic support platform for the rear seats 100, with a lateral span sufficient to accommodate at least three independent seating areas to meet the needs of multiple passengers. The seat cushion 110 typically employs a composite structure of foam and a metal frame, covered with fabric or leather to provide a comfortable feel. The seat cushion 110 has internal fixing points for mounting the center and side buckles 140, which are usually connected to the vehicle floor using high-strength bolts or welding to ensure it can withstand significant tensile loads in a collision. In practical applications, the specific length, width, and seating ratio of the seat cushion 110 can be adaptively adjusted according to the dimensions of the vehicle's interior space. For example, in standard SUVs, it is typically configured with three equally wide seats, or in MPVs, with three seats of unequal width to optimize space utilization.

[0061] The center seatbelt mechanism 130 is located in the middle seat, meaning it is an independent restraint system specifically designed for the middle passenger. In the overall layout of the seat cushion 110, the middle seat is typically positioned between the left and right seats. The center seatbelt mechanism 130 is positioned corresponding to the centerline of the middle seat to ensure that when the passenger is seated in the middle position, the center seatbelt 132 can cross the passenger's pelvic or chest area, providing effective restraint protection. Specifically, the center storage assembly 131 is mounted on the seat back 120, while the center buckles (including the first center buckle 135 and the second center buckle 136) are mounted on the seat cushion 110 in the area corresponding to the middle seat. This layout provides the middle passenger with their own dedicated safety protection device, eliminating reliance on the side seatbelts on either side, thus increasing the overall safety redundancy of the rear seats. Especially in the event of a side collision or sudden braking, the passenger in the middle seat can be quickly and reliably secured in their seat, preventing secondary collisions with other components or passengers due to inertia. Through the above technical solution, this application clarifies that the rear seat 100 is suitable for multi-seat layouts, especially for rear configurations with three or more seats. By precisely positioning the middle seat belt mechanism 130 in the middle seat, targeted safety protection for the middle passenger is achieved, solving the problems of insufficient safety protection for the middle passenger in traditional rear seats or inconvenient use of seat belts, and improving the overall safety performance of the rear seats of the vehicle.

[0062] In an alternative embodiment, such as Figure 1 and Figure 4 As shown, the rear seat 100 also includes two side buckles 140, which are installed on the seat cushion 110 and located on the side of the side seat near the center, for engaging with the side latch of the side seatbelt mechanism. The side buckle 140 serves as the terminal connector of the side seatbelt system, primarily used to receive and lock the side latch extending from the side seatbelt mechanism, which is typically installed on the vehicle side wall, B-pillar, or C-pillar. Specifically, the side buckle 140 is positioned in the side area of ​​the seat cushion 110 corresponding to the side seat, such as near the door, a layout that facilitates insertion of the side latch by the passenger or an automatic retractor.

[0063] The side buckle 140 can be connected to the seat cushion 110 in various ways. For example, the side buckle 140 can be fixed to the side frame of the seat cushion 110 by bolts; or it can be embedded in the foam cover of the seat cushion 110 by a snap-fit ​​structure; or it can be a soft connecting buckle sewn onto the seat cover. This application embodiment does not impose any special limitation on the specific connection method, and can be flexibly selected according to actual assembly requirements.

[0064] By incorporating the side buckle 140, the rear seat 100 not only provides independent safety protection for the middle seat (achieved through the middle seatbelt mechanism 130), but also remains compatible with the vehicle's existing side three-point or two-point seatbelt systems, thus achieving full seatbelt coverage and enhancing the vehicle's passive safety performance. Since the side buckle 140 is located independently of the middle buckle on one side of the side seat, it avoids spatial interference between the middle and side seatbelt mechanisms, ensuring convenient use of the side seatbelt by side passengers. Furthermore, this modular buckle layout design allows the rear seat 100 to flexibly adapt to the seatbelt configuration requirements of different vehicle models, achieving standardized seatbelt assembly without significant modifications to the main seat structure, thereby reducing production costs and improving assembly efficiency.

[0065] In an alternative embodiment, such as Figure 1 , Figure 6 and Figure 7 As shown, the side buckle 140 is disposed adjacent to the first intermediate buckle 135 or the second intermediate buckle 136, and the latch hole of the side buckle 140 is located on the side away from the first intermediate buckle 135 or the second intermediate buckle 136, while the latch holes of the first intermediate buckle 135 or the second intermediate buckle 136 are located on the side away from the side buckle 140. This design can prevent the side latch from being mistakenly inserted into the first intermediate buckle 135 or the second intermediate buckle 136, and at the same time prevent the first intermediate latch 133 or the second intermediate latch 134 from being mistakenly inserted into the side buckle 140.

[0066] In an alternative embodiment, such as Figure 7 As shown, the first center buckle 135, the second center buckle 136, and the side buckle 140 can all be rotatably mounted on the seat cushion 110. Each buckle can rotate a certain angle, for example, rotating forward 0 to 25 degrees. When the buckles are engaged, they can adaptively rotate to the appropriate angle according to the force applied to the seat belt.

[0067] like Figures 1 to 7 As shown, another embodiment of the present invention provides a vehicle, which includes a passenger compartment and a rear seat 100 as provided in any of the above embodiments, the rear seat 100 being installed in the passenger compartment. The specific structure of the rear seat 100 is the same as described in the above embodiments. Since this vehicle adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0068] In one possible implementation, such as Figure 1 and Figure 4As shown, the vehicle provided in this application also includes a side seatbelt mechanism, which is installed in the passenger compartment. As an important component of the vehicle's passive safety system, the side seatbelt mechanism is designed to apply restraint force to passengers in the side seats during a collision or emergency braking, thereby inhibiting inertial displacement and reducing the risk of injury. This side seatbelt mechanism typically includes components such as a retractor, webbing, guides, and locking latches; the retractor is fixed to the passenger compartment pillar or the side structure of the vehicle body and is responsible for the automatic retraction and emergency locking of the webbing. Based on differences in vehicle interior layout and specific safety regulations, the installation location and structural form of the side seatbelt mechanism can be adaptively adjusted, and this embodiment does not strictly limit this.

[0069] The rear seat 100 also includes a side buckle 140, which is installed on the seat cushion 110 and located on one side of the side seat. The side buckle 140 serves as the mating end of the side seatbelt mechanism, securely positioned on the outer area of ​​the corresponding side seat on the seat cushion 110. To ensure structural integrity when the webbing is subjected to significant tensile loads, the side buckle 140 and the seat cushion 110 are rigidly connected via bolts, riveting, or snap-fit. Simultaneously, the installation height and tilt angle of the side buckle 140 are precisely calibrated to match the natural traction path of the side seatbelt mechanism's webbing, thus balancing wearing comfort and restraint effectiveness. For multi-seat layouts, such as a three-seat rear seat, the side buckle 140 can be positioned separately on the corresponding outer sides of the left and right seats to provide independent protection for each side passenger.

[0070] The side locking tongue of the side seatbelt mechanism can be inserted into the side buckle 140. The side locking tongue is secured to the end of the webbing of the side seatbelt mechanism and moves synchronously with the webbing. When the passenger fastens the belt, the side locking tongue is pushed into the locking cavity inside the side buckle 140, and the two engage with each other through an internal mechanical locking mechanism to form an effective restraint loop around the passenger's torso. This insertion and engagement uses a mature and universal mechanical structure, which has a highly reliable locking and holding capability and a convenient one-button unlocking feature, ensuring that it will not accidentally disengage during normal driving and can be quickly released in an emergency.

[0071] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A rear seat, characterized in that, include: Seat cushion; The seat back is rotatably mounted to the seat cushion so that the seat back has a sitting mode and a bed mode. The center seatbelt mechanism includes a center storage assembly, a center seatbelt, a first center latch, a second center latch, a first center buckle, and a second center buckle. The center storage assembly is installed inside the seat back. One end of the center seatbelt passes through the top of the seat back and is connected to the center storage assembly. The first center latch is connected to the end of the center seatbelt away from the center storage assembly. The second center latch is sleeved on the center seatbelt and is movable relative to the center seatbelt. The first center buckle and the second center buckle are both located on the seat cushion and are spaced apart. When the seat back is in the bed mode, the middle seat belt can be stored in the middle storage component, and both the first middle locking tongue and the second middle locking tongue can be temporarily stored on the back side of the seat back.

2. The rear seat according to claim 1, characterized in that, The rear seats also include headrests, which are mounted on the top of the seat back and have a gap between them. When the seat back is in the bed-like mode, both the first and second intermediate latches pass through the gap and are temporarily stored on the back side of the seat back.

3. The rear seat according to claim 2, characterized in that, When both the first and second intermediate latches pass through the gap and are temporarily stored on the back side of the seat back, the seat headrest and the seat back cooperate to cover the first and second intermediate latches.

4. The rear seat according to claim 1, characterized in that, When a person is seated in the seating mode, the first center latch can be inserted into the first center buckle, and the second center latch can be inserted into the second center buckle. Alternatively, when the seat back is in the seating mode and no one is sitting on it, the center seat belt can be stored in the center storage assembly, and both the first center latch and the second center latch can be stored in the top of the seat back.

5. The rear seat according to claim 4, characterized in that, The first and second intermediate buckles are respectively located on opposite sides of the seat cushion.

6. The rear seat according to claim 1, characterized in that, The back of the seat back is provided with a fixing part. When the seat back is in the bed mode, the first middle locking tongue and the second middle locking tongue are both fixed to the fixing part.

7. The rear seat according to claim 6, characterized in that, The fixing part includes a first magnetic attraction part and a second magnetic attraction part; When the seat back is in the bed-like mode, the first center latch is magnetically attracted to the first magnetic attraction part, and the second center latch is magnetically attracted to the second magnetic attraction part.

8. The rear seat according to claim 7, characterized in that, The first magnetic attraction part and the second magnetic attraction part are arranged at intervals, and / or the extension direction of the first magnetic attraction part is arranged at an angle to the extension direction of the second magnetic attraction part.

9. The rear seat according to claim 6, characterized in that, The fixing part includes a first insertion slot and a second insertion slot; When the seat back is in the bed mode, the first intermediate locking tongue is inserted into the first insertion slot, and the second intermediate locking tongue is inserted into the second insertion slot.

10. The rear seat according to claim 6, characterized in that, The fixing part includes a first hook and a second hook; When the seat back is in the bed mode, the first intermediate locking tongue is attached to the first hook, and the second intermediate locking tongue is attached to the second hook.

11. The rear seat according to claim 1, characterized in that, The upper surfaces of both the first and second intermediate buckles are not higher than the upper surface of the seat cushion.

12. The rear seat according to claim 1, characterized in that, The seat cushion has at least three seats, with the center seatbelt mechanism located in the middle seat.

13. The rear seat according to claim 12, characterized in that, The rear seat also includes two side buckles, which are installed on the seat cushion and located on the side of the seat near the center, for engaging with the side locking tongue of the side seat belt mechanism.

14. The rear seat according to claim 13, characterized in that, The side buckle is disposed adjacent to the first middle buckle or the second middle buckle, and the locking tongue hole of the side buckle is located on the side away from the first middle buckle or the second middle buckle, and the locking tongue hole of the first middle buckle or the second middle buckle is located on the side away from the side buckle.

15. The rear seat according to claim 1, characterized in that, Both the first and second intermediate buckles can be rotatably mounted on the seat cushion.

16. A vehicle, characterized in that, It includes a passenger compartment and a rear seat as described in any one of claims 1 to 15, the rear seat being installed in the passenger compartment.

17. The vehicle according to claim 16, characterized in that, The vehicle also includes a side seat belt mechanism, which is installed in the passenger compartment; The rear seats also include side buckles, which are installed on the seat cushion and located on one side of the side seat. The side locking tongue of the side seat belt mechanism can be inserted into the side buckle.

Images