Seat structure and vehicle

Abstract

The utility model relates to a seat structure and a vehicle, and belongs to the technical field of vehicles, the seat structure comprises a child backrest and a driving part which are arranged on a seat cushion, a safety belt assembly arranged on the seat backrest, and a safety lock arranged on the seat cushion. The driving part is in transmission connection with the child backrest, the driving part can drive the child backrest to move and switch between a hidden state and a use state, in the hidden state, the child backrest is located below the seat cushion, and in the use state, at least part of the child backrest is located above the seat cushion; a child sitting space is defined between the child backrest and the seat cushion. The safety belt assembly can be connected with the safety lock, and the child is locked in the child sitting space. According to the seat structure, the occupied space for placing a traditional child seat in a vehicle can be effectively saved, the child backrest can be automatically switched between a hidden state and a using state through the driving part, and the process of manually disassembling and assembling the traditional child seat can be abandoned.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field, especially a seat structure, and the utility model relates to a vehicle with the seat structure. BACKGROUND

[0002] With the popularity of cars in families, the frequency of children traveling by car is increasing, and the importance of child safety seats as key equipment to ensure the safety of children traveling by car is self-evident. The traditional child seat is designed as an independent external hanging type, which occupies a large valuable space in the car when not in use. Especially for small cars with limited interior space, the bulky child seat placed on the rear seats not only seriously affects the comfort of the rear passengers, but also may hinder the passage in the car, making it inconvenient to place and take daily items. In addition, even if it is disassembled, it will also occupy a large space in the trunk. Moreover, manually disassembling and assembling the child seat is extremely tedious and complex. SUMMARY

[0003] Therefore, the utility model aims to provide a seat structure which can hide or slide out the child backrest according to the needs, effectively save the interior space of the car, and can avoid repeatedly disassembling and assembling the child backrest.

[0004] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0005] A seat structure, comprising a child backrest and a driving part provided on a seat cushion, a safety belt assembly provided on the seat backrest, and a safety lock provided on the seat cushion;

[0006] The driving part is connected in transmission with the child backrest, the driving part can drive the child backrest to move and switch between a hidden state and a use state, and in the hidden state, the child backrest is located below the seat cushion, and in the use state, at least part of the child backrest is located above the seat cushion, and a child seating space is defined between the child backrest and the seat cushion;

[0007] The safety belt assembly can be connected with the safety lock and lock the child in the child seating space.

[0008] Further, the child backrest is slidingly provided on the seat cushion;

[0009] A guide part is provided between the seat cushion and the child backrest, and the guide part is used for guiding the child backrest to slide relative to the seat cushion.

[0010] Further, the guide part comprises a guide plate provided on the seat cushion and an arc-shaped sliding groove provided on the child backrest.

[0011] The guide plate is inserted into the arc-shaped sliding groove and used for guiding the sliding of the child backrest.

[0012] Further, the driving part comprises a driving motor arranged on the seat cushion, and a driving shaft of the driving motor is provided with a driving gear;

[0013] The back of the child backrest is provided with a transmission rack connected with the driving gear in a meshing mode.

[0014] Further, the back of the child backrest is provided with limiting protrusions located on two opposite sides of the transmission rack.

[0015] The driving gear is inserted between the limiting protrusions on two sides and connected with the transmission rack in a meshing mode.

[0016] Further, the child backrest is in an arc shape, and the transmission rack is in an arc shape conforming to the child backrest; and / or,

[0017] The child comprises a body part and side parts arranged on two opposite sides of the body part.

[0018] Further, the safety lock is a plurality of safety locks arranged along the length direction of the seat cushion; and / or,

[0019] The safety lock is located in the middle of the seat cushion in the width direction.

[0020] Further, the safety belt assembly comprises a safety belt, a retractor and a fixing support arranged on left and right sides of the safety lock respectively.

[0021] Two ends of the safety belt are connected with the retractor and the fixing support respectively, and a lock tongue for connecting with the safety lock is arranged on the safety belt.

[0022] Further, the back of the seat cushion is provided with an opening, and the opening is used for passing the child backrest.

[0023] In the hidden state, the child backrest blocks the opening, and the top surface of the child backrest is flush with the seat cushion.

[0024] Compared with the prior art, the utility model has the following advantages:

[0025] The seat structure, the driving part is connected with the child backrest transmission, and the child backrest can be switched between the hidden state and the use state, and the child backrest can be stored under the seat cushion in the hidden state, which can effectively save the space originally used for placing the traditional child seat in the vehicle.

[0026] In addition, the child backrest is arranged on the seat cushion in a sliding mode, and the sliding track of the child backrest is guided by the guide part, so that the motion smoothness of the child backrest during switching between the hidden state and the use state can be ensured, the deviation, jamming or interference of the child backrest with the surrounding components can be effectively prevented, the operation of the seat structure is more stable and reliable, the possibility of accidental injury to the child caused by abnormal motion is reduced, and the wear risk of the mechanical components is also reduced, thereby prolonging the service life of the entire seat structure.

[0027] The guide part adopts the form of a guide plate and an arc-shaped sliding groove, and the structure is relatively simple, easy to manufacture, and can effectively limit the motion direction of the child backrest to ensure that the child backrest does not shake or deviate during sliding.

[0028] Secondly, the driving part adopts the form of a driving motor, a driving gear and a transmission rack, which can realize efficient power transmission, and the driving motor can be installed inside the seat cushion without occupying additional space in the vehicle.

[0029] By arranging the limiting protrusions on both sides of the transmission rack on the back of the child backrest, the driving gear can be limited to a specific position, which can ensure that the driving gear and the transmission rack are correctly and stably engaged, thereby effectively preventing the driving gear from deviating or falling out of the teeth during the motion of the child backrest due to external force or other factors, and ensuring the normal operation of the driving system.

[0030] Further, by setting the child backrest to be arc-shaped, and the transmission rack also being shaped along the arc of the child backrest, the child's body curve can be better fitted, the arc-shaped backrest can provide more uniform support for the child's back, disperse body pressure, reduce fatigue when riding for a long time, effectively improve the comfort of the child riding; and compared with a linear design, the arc-shaped structure can better adapt to the shape of the seat cushion and the space layout inside the vehicle, and also has better aesthetics. The child backrest comprises a body portion and side portions arranged on opposite sides of the body portion, and the side portions can provide additional side protection for the child, improving the safety of the child riding.

[0031] Children of different ages and body types have different needs for the position and fixing method of the safety belt when riding. By arranging the safety locks to be a plurality of safety locks arranged at intervals along the length direction of the seat cushion, appropriate safety locks can be selected to connect the safety belt assembly according to the specific body type and riding needs of the child, so that the safety belt can be fixed in a way that better fits the child's body, improving the versatility and applicability of the seat; and the safety locks are located in the middle of the seat cushion in the width direction, which can prevent the safety locks from interfering with the child's legs.

[0032] The safety belt assembly comprises a safety belt, and a retractor and a fixing support arranged on the left and right sides of the safety lock, respectively, and can realize flexible adjustment of the length of the safety belt. By making the child backrest block the opening in the hidden state, and the top surface of the child backrest flush with the seat cushion, the entire seat surface can be smooth and flat without protruding parts or gaps, which helps to ensure the overall aesthetics of the vehicle interior.

[0033] Another purpose of the utility model is to provide a vehicle, wherein the vehicle is provided with the seat structure as described above.

[0034] The vehicle described in the utility model can improve the riding safety of children by being provided with the seat structure as described above, and the child backrest can be hidden under the seat cushion, so that when the child seat is not used, the rear space of the vehicle can be fully released, and can be flexibly used for passenger riding or loading articles. At the same time, the child seat state can be automatically switched by the driving part, so that the use process of the child seat can be greatly simplified. BRIEF DESCRIPTION OF DRAWINGS

[0035] The accompanying drawings, which form a part of the present application, are used to provide a further understanding of the present application, and the illustrative embodiments of the present application and their description serve to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0036] Figure 1 The seat structure described in the utility model embodiment is in a structure schematic view when the child backrest is in a use state;

[0037] Figure 2 As Figure 1 Structure schematic view of the structure shown in another view;

[0038] Figure 3 Structure schematic view of the seat structure in the hidden state of the child backrest according to the embodiment of the utility model;

[0039] Figure 4 As Figure 1 Local structure schematic view of the structure shown;

[0040] Figure 5 As Figure 1 Local structure schematic view of the structure shown in another view;

[0041] Figure 6 Assembly state diagram between the child backrest, the guide plate, the first support, the second support, the driving motor and the electromagnetic bolt according to the embodiment of the utility model;

[0042] Figure 7 As Figure 6 Structure schematic view of the structure shown in another view;

[0043] Figure 8 Structure schematic view of the child backrest according to the embodiment of the utility model;

[0044] Figure 9 Structure schematic view of the child backrest in another view according to the embodiment of the utility model;

[0045] Figure 10 Structure schematic view of the child backrest in another view according to the embodiment of the utility model;

[0046] Figure 11 As Figure 10 Sectional view of A-A line in it;

[0047] Figure 12 Another structure schematic view of the child backrest according to the embodiment of the utility model.

[0048] Explanation of reference signs:

[0049] 1, seat cushion; 2, child backrest; 3, safety lock; 4, safety belt; 5, seat backrest; 6, guide plate; 7, retractor; 8, driving motor; 9, third support; 10, first support; 11, fixed support; 12, electromagnetic bolt; 13, second support; 14, driving gear;

[0050] 101, cushion framework;

[0051] 201, body part; 202, side part; 203, arc-shaped sliding groove; 204, limiting protrusion; 2041, locking hole; 205, transmission rack;

[0052] 2a, framework part; 2b, foaming part. DETAILED DESCRIPTION

[0053] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0054] In the description of the utility model, it should be noted that the orientation words such as 'up, down, left, right, front, back' used in the embodiment are defined with the up-down direction, left-right direction and front-back direction of the automobile as the reference. Among them, the up-down direction of the automobile is also the height direction (Z direction) of the automobile, the front-back direction of the automobile is also the length direction (X direction) of the automobile, and the left-right direction of the automobile is also the width direction (Y direction) of the automobile. In addition, the terms 'first' and'second' are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0055] In addition, in the description of the utility model, unless otherwise explicitly limited, the terms'mounting', 'connecting', 'connection' and 'connecting piece' should be understood broadly. For example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood in combination with the specific circumstances.

[0056] The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0057] The conventional child seat is mostly designed as an independent external hanging type, which needs to occupy a large valuable space in the car when not in use. The bulky child seat placed on the rear seats not only seriously affects the riding comfort of the rear passengers, but also may hinder the passage in the car, causing inconvenience in placing and taking daily items. Even if it is disassembled, finding a suitable storage location becomes a new problem, and the trunk is occupied by a large space, and frequent disassembly and installation can easily cause wear and tear of the seat parts, affecting its safety and service life. On the other hand, manual disassembly and assembly of the child seat is extremely tedious and complex, and a slight carelessness may result in improper installation, leaving a safety hazard. In order to solve the above problems, some improved child seat designs have appeared in recent years. Some seats try to use a folding structure to reduce the occupied space when not in use, but the folding process still relies on manual operation, which cannot fundamentally solve the convenience problem.

[0058] To this end, the embodiment proposes a novel seat structure, which comprises a child backrest 2 and a driving part arranged on a seat cushion 1, a safety belt assembly arranged on a seat backrest 5, and a safety lock 3 arranged on the seat cushion 1. The driving part is in transmission connection with the child backrest 2, the driving part can drive the child backrest 2 to move and switch between a hidden state and a use state, and in the hidden state, the child backrest 2 is located below the seat cushion 1, and in the use state, at least part of the child backrest 2 is located above the seat cushion 1 and defines a child riding space between the child backrest 2 and the seat cushion 1. The safety belt assembly can be connected with the safety lock 3 and lock the child in the child riding space.

[0059] The seat structure of the embodiment can effectively save the space originally used for placing the traditional child seat in the vehicle by connecting the driving part and the child backrest 2, enabling the child backrest 2 to switch between the hidden state and the use state, and enabling the child backrest 2 to be stored below the seat cushion 1 in the hidden state. In addition, the automatic switching of the child backrest 2 between the hidden state and the use state by the driving part can eliminate the cumbersome process of manual installation and disassembly of the traditional child seat. Moreover, the child backrest 2, the driving part, the safety belt assembly, and the safety lock 3 are integrated into the vehicle seat system, making it part of the vehicle as a whole. This not only makes the appearance more neat and beautiful and reduces the feeling of scattered parts, but also better adapts to the mechanical structure and electrical system of the whole vehicle, improving the reliability of the seat.

[0060] Based on the above overall introduction, an exemplary structure of the seat structure of the embodiment is described with reference to Figures 1 to 7 In addition, the embodiment mainly considers the application scenario of the rear seat of the vehicle seat, i.e., the seat is specifically directed to the rear seat of the vehicle, and the child backrest 2 is specifically installed at the middle position of the rear seat. Such a layout arrangement, on the one hand, fully considers the utilization efficiency of the space of the rear seat of the vehicle. When the child backrest 2 is in the hidden state, the middle part of the rear seat can be integrated with the two side seats to form a continuous and spacious passenger space, meeting the riding needs of adult passengers in daily life and not damaging the regularity of the space in the vehicle.

[0061] On the other hand, when there is a child riding demand, the child backrest 2 at the middle part can be unfolded to provide a safe riding area for the child, thereby ensuring the personal safety of the child during the driving of the vehicle and meeting the actual use needs of the vehicle in diversified travel scenarios.

[0062] As a preferred embodiment, the rear part of the seat cushion 1 is provided with an opening for the child backrest 2 to pass through. Moreover, in the hidden state, the child backrest 2 blocks the opening, and the top surface of the child backrest 2 is flush with the seat cushion 1. In this way, when the child seat is not used, it can be hidden under the seat cushion 1, without occupying additional space in the vehicle and without affecting the use of the rear seats.

[0063] In addition, when the child backrest 2 is hidden, its top surface is flush with the seat cushion 1, blocking the opening, and the entire seat surface appears smooth and flat, without protruding parts or gaps, which helps to improve the overall appearance of the vehicle interior. At the same time, it can effectively prevent dust, debris and other foreign matter from entering the seat through the opening, and can effectively reduce the possibility of passengers tripping or being scratched, further improving the safety of the vehicle interior.

[0064] It is worth mentioning that the structure of the seat cushion 1 of the present embodiment is the same as that of the prior art, and mainly includes a seat cushion framework 101, a foaming layer provided on the seat cushion framework 101, and a skin covering the foaming layer. In order to clearly show the improvement points of the present embodiment, only the structures of the seat cushion framework 101, the foaming layer and the skin are shown in the figure, and the specific structure can refer to the prior art. In addition, the child backrest 2 is slidingly arranged on the seat cushion framework 101, so the opening is provided on the seat cushion framework 101, the foaming layer and the skin to enable the child backrest 2 to slide from below the seat cushion framework 101 to above the seat cushion 1. Moreover, the seat cushion 1 is usually at a certain height from the vehicle floor, and components such as seat adjustment mechanisms are generally arranged below it, and the child backrest 2 is generally small in size, so there is space below the seat cushion to accommodate the child backrest 2.

[0065] As a preferred embodiment, as shown in Figures 8 to 11 The child backrest 2 of the present embodiment is arc-shaped as a whole. In this way, when a child sits on the seat, the arc-shaped backrest can provide more uniform support for the child's back, distribute body pressure, reduce fatigue when sitting for a long time, and effectively improve the comfort of the child's ride. At the same time, it also helps to better secure the child's body, improves the safety of the ride, and can improve the overall appearance of the child backrest 2.

[0066] In addition, in some embodiments, referring to Figure 8 and Figure 9As shown in the drawings, the child backrest 2 can further include a body portion 201, and side portions 202 arranged on both opposite sides of the body portion 201. The side portions 202 can provide additional side protection for the child. In the case of a side collision of the vehicle or a sharp turn, etc., the side portions 202 can effectively block the movement of the child's body to the side, reduce the harm to the child caused by the collision or shaking, and further improve the safety of the child riding. At the same time, the side portions 202 can also increase the wrapping feeling when the child rides, which is beneficial to improve the safety and comfort of the child riding.

[0067] It is necessary to particularly point out here that, considering the need for the child backrest 2 to be conveniently integrated on the seat, from the perspective of optimizing the overall space layout and assembly process, the child backrest 2 can be designed to be relatively thin, as shown in the drawings. Figures 8 to 11 However, the thinner design may affect the riding experience to some extent. In order to ensure the comfort and safety of the child during use, in the actual specific implementation scheme, a special back cushion perfectly matched with the child backrest 2 can be equipped. The back cushion can be selected according to the body characteristics of the child, such as selecting a high-elasticity and good-ventilation filling material, so as to effectively make up for the discomfort caused by the thinning of the backrest, and provide soft and body-fitting support for the child.

[0068] At the same time, the mature structure of the conventional seat backrest 5 can also be referred to for design optimization. Specifically, as shown in the drawings, Figure 12 The front side of the child backrest 2 is composed of three key parts. That is, first, the framework part 2a plays a stable supporting role, which can ensure that the child backrest 2 maintains a stable shape when bearing pressure, and builds a solid foundation for the entire backrest structure. Secondly, the foaming part 2b can effectively reduce the direct impact of vibration and collision on the child's body by using the cushioning performance of foaming materials, and improve the comfort of riding. Finally, the skin (not shown in the drawings) laid on the foaming part 2b not only has the function of decoration, but also meets the needs in terms of touch, ventilation, and cleaning convenience by selecting appropriate materials. Figure 12

[0069] As a further embodiment, the child backrest 2 of the present embodiment is slidingly arranged on the seat cushion 1. Moreover, a guide portion is arranged between the seat cushion 1 and the child backrest 2, and the guide portion is used to guide the child backrest 2 to slide relative to the seat cushion 1.

[0070] ​By setting the child backrest 2 on the seat cushion 1 in a sliding manner and guiding its sliding track through the guide part, the movement accuracy of the child backrest 2 during the switching between the hidden and use states can be ensured, so that the child backrest 2 can be effectively prevented from deviating, jamming or interfering with the surrounding components, the operation of the seat structure is more stable and reliable, the possibility of accidental injury to the child caused by abnormal movement is reduced, the wear risk of mechanical components is also reduced, and the service life of the entire seat structure can be prolonged.

[0071] As a preferred embodiment, referring to the guide part shown in Figure 5 and Figure 10 , the guide part of the embodiment includes a guide plate 6 arranged on the seat cushion 1 and an arc-shaped sliding groove 203 arranged on the child backrest 2, and the guide plate 6 is inserted into the arc-shaped sliding groove 203 and used to guide the sliding of the child backrest 2. Further, the arc-shaped sliding groove 203 is relatively arranged on the child backrest 2, so as to provide a continuous and accurate guiding force during the sliding of the child backrest 2 and to minimize the jamming phenomenon caused by uneven friction or guiding deviation

[0072] Correspondingly, the guide plate 6 is specifically arranged on the seat cushion framework 101 and is also relatively arranged in two. In addition, based on the fact that the child backrest 2 is overall arc-shaped, the guide plate 6 of the embodiment is also overall arc-shaped and adapted to the child backrest 2. Further, the guide plate 6 includes a main plate and a side plate extending to one side of the main plate, and the main plate is inserted into the arc-shaped sliding groove 203, while the side plate is connected with the seat cushion framework 101. The side plate and the seat cushion framework 101 can be connected by screwing or welding or other conventional ways.

[0073] Here, the structure of the guide plate 6 and the arc-shaped sliding groove 203 is adopted as the guide part, which is relatively simple in structure and has fewer components. The guide plate 6 is inserted into the arc-shaped sliding groove 203 to form a stable matching relationship, which can effectively limit the movement direction of the child backrest 2 and ensure that the child backrest 2 does not shake or deviate during the sliding process. Moreover, this simple structure not only reduces the manufacturing cost, but also improves the reliability of the seat structure and reduces the probability of failure caused by complex structure.

[0074] Further, compared with a straight sliding groove, the arc-shaped sliding groove 203 can make the child backrest 2 change a certain angle during the sliding process, so as to better adapt to the space layout of the seat cushion 1 and the needs of the child riding, and also better form a comfortable riding space with the seat cushion 1. In addition, the manufacturing process of the guide plate 6 and the arc-shaped sliding groove 203 is relatively simple and easy to process and produce. During the assembly process, the guide plate 6 only needs to be accurately inserted into the arc-shaped sliding groove 203, which is convenient and fast to operate and can improve the production efficiency.

[0075] In addition, in combination with the above-mentionedFigure 5 and Figure 6 As a preferred embodiment, the driving part includes a driving motor 8 arranged on the seat cushion 1, and a driving shaft of the driving motor 8 is provided with a driving gear 14, while the back of the child backrest 2 is provided with a transmission rack 205 connected with the driving gear 14 in meshing. The transmission rack 205 is arc-shaped and conforms to the child backrest 2. Here, the driving part adopts the combination of the driving motor 8, the driving gear 14 and the transmission rack 205, which can realize efficient power transmission. Through the direct meshing of the driving gear 14 and the transmission rack 205, the energy loss in the power transmission process is small, which can ensure that the power of the driving motor 8 is effectively transmitted to the child backrest 2, so that the child backrest 2 can be smoothly and quickly switched between the hidden state and the use state.

[0076] In addition, the arrangement of the driving motor 8, the driving gear 14 and the transmission rack 205 is relatively compact, which can fully utilize the space between the seat cushion 1 and the child backrest 2. Moreover, the driving motor 8 can be installed inside the seat cushion 1, without occupying additional space in the vehicle, and the meshing structure of the driving gear 14 and the transmission rack 205 is relatively small, which does not have too much influence on the overall layout of the seat. Obviously, in addition to the gear and rack transmission, the chain or belt transmission is also feasible. Compared with the chain or belt transmission, the gear and rack transmission does not have the problem of chain slack or belt slip, and has higher reliability, which is beneficial to ensure the long-term stable operation of the seat structure.

[0077] Further, as shown in Figure 6 and Figure 10 The back of the child backrest 2 is provided with limiting protrusions 204 located on both opposite sides of the transmission rack 205, and the driving gear 14 is inserted between the limiting protrusions 204 on both sides and connected with the transmission rack 205 in meshing. The limiting protrusions 204 are arc-shaped and extend along the length direction of the child backrest. By arranging the limiting protrusions 204 on both sides of the transmission rack 205 on the back of the child backrest 2, the driving gear 14 can be limited in a specific position, which ensures that the driving gear 14 always maintains correct and stable meshing state with the transmission rack 205.

[0078] Therefore, the active gear 14 can be effectively prevented from being deviated or disengaged due to external force or other factors during the movement of the child backrest 2, and the child backrest 2 can be prevented from being unable to normally switch states due to gear meshing problems. Moreover, by limiting the position of the active gear 14, the limiting protrusion 204 helps to maintain the meshing accuracy of the active gear 14 and the transmission rack 205, thereby improving the efficiency and smoothness of power transmission. During the movement of the child backrest 2, power can be more stably transmitted from the active gear 14 to the transmission rack 205, thereby driving the child backrest 2 to realize smooth and smooth state switching, avoiding the phenomenon of poor or jammed power transmission caused by the position deviation of the active gear 14, and providing users with a better use experience. In addition, the design of the limiting protrusion 204 makes the installation and positioning of the active gear 14 more convenient, and in the production and assembly process of the seat, workers can more quickly and accurately install the active gear 14 to the appropriate position, improving production efficiency.

[0079] Further, the first limiting block and the second limiting block can be respectively arranged between the two ends of the two limiting protrusions 204, and the first limiting block and the second limiting block are respectively located at the two ends of the transmission rack 205. Therefore, the active gear 14 can be abutted with the first limiting block or the second limiting block to indicate that the child backrest 2 reaches the hidden position or the use position.

[0080] Further, the first limiting block and the second limiting block can be respectively arranged between the two ends of the two limiting protrusions 204, and the first limiting block and the second limiting block are respectively located at the two ends of the transmission rack 205. Therefore, the active gear 14 can be abutted with the first limiting block or the second limiting block to indicate that the child backrest 2 reaches the hidden position or the use position.

[0081] It should be noted that the driving motor 8 can be a motor with self-locking function, for example, a worm gear reduction motor commonly used in the prior art or other self-locking motor. By using a motor with self-locking function, when the child backrest 2 is adjusted to the desired position, whether it is stretched for children to ride or stored under the seat cushion to meet the adult use scenario, the self-locking function of the motor can ensure that the position of the child backrest 2 does not change. Thus, it can effectively prevent the child backrest 2 from moving unexpectedly due to external factors such as vibration and bumping during driving, avoiding potential crushing or collision injuries to children, and effectively enhancing the safety of the seat in use.

[0082] In some embodiments, a locking portion can also be provided between the child backrest 2 and the seat cushion to enable the child backrest 2 to be locked in the use state and the hidden state. As a specific embodiment, as shown in Figure 5 and Figure 8 , the locking portion includes a locking hole 2041 provided on the child backrest 2 and an electromagnetic latch 12 provided on the seat backrest 5. The electromagnetic latch 12 can use the existing structure, which generally includes a housing, a core, a latch body connected to the core, an electromagnetic coil wound on the core, and a return spring. When the electromagnetic coil is connected to the power supply, the magnetic field will exert a magnetic force on the latch body, which can overcome the elastic force of the return spring to move and thus insert into the corresponding slot or lock hole to achieve the locking function.

[0083] When unlocking is required, the power supply to the electromagnetic coil is cut off, and the magnetic field disappears quickly. At this time, the elastic force of the return spring acts to push the latch body to move in the opposite direction, so that it is pulled out of the slot or lock hole and returns to the initial unlocked state. As a further embodiment, as shown in Figure 5 , the locking hole 2041 is a plurality of holes spaced along the length direction of the limiting protrusion 204, so that the electromagnetic latch 12 cooperates with different locking holes 2041 to lock the child backrest 2 at different positions.

[0084] As shown in Figure 6 and Figure 7 , the driving motor 8 is fixed to the seat cushion framework 101 by the first bracket 10, and the first bracket 10 is L-shaped as a whole, with a mounting opening at the top for the driving motor 8 to pass through. The electromagnetic latch 12 is fixed to the first bracket 10 by the second bracket 13 or directly fixed to the seat cushion framework 101. As a specific embodiment, as shown in Figure 5 , the second bracket 13 is generally Z-shaped, which not only has good structural strength, but also can prevent interference with other components.

[0085] In some embodiments, the safety lock 3 is provided in multiple numbers along the length direction of the seat cushion 1. As a specific example, as shown in Figure 1 the safety lock 3 of the present embodiment is provided in two numbers along the length direction of the seat cushion 1. Of course, the number of the safety lock 3 is not limited to Figure 1 two, as shown in the drawings, but can be three, four or other numbers. Children of different ages and body types have different needs for the position and fixing mode of the safety belt 4 when riding. The multiple safety locks 3 provided at intervals can allow parents to flexibly select a suitable safety lock 3 to connect the safety belt assembly according to the specific body type and riding needs of the child, so as to ensure that the safety belt 4 can be fixed in a way that fits the child's body more closely, provide a more comfortable and safe riding experience, and improve the universality and applicability of the seat.

[0086] In some embodiments, the safety lock 3 is located in the middle of the seat cushion 1 in the width direction. This design can, on the one hand, allow the safety belt assembly to evenly distribute the pulling force in the middle of the seat cushion 1 when fixing the child. This can avoid uneven force on the seat caused by the safety belt 4 pulling force concentrated on one side of the seat, prevent the seat from tilting or deforming, and be conducive to maintaining the overall balance and stability of the seat structure and prolonging the service life of the seat. On the other hand, it can also effectively prevent the safety lock 3 from interfering with the passenger's legs and reducing the riding comfort.

[0087] The structure of the safety lock 3 can be directly used as the structure commonly used on existing vehicles, and the safety lock 3 is generally box-shaped, with a high-strength engineering plastic shell, an internal lock core mechanism, and a spring, spring and latch assembly. When the latch of the safety belt 4 is inserted, the latch triggers the spring, which deforms under the action of the spring force, and then clamps the latch, achieving precise locking and ensuring that the safety belt 4 is tightly connected with the safety lock 3 and cannot be accidentally released. To further improve the riding comfort, an elastic buffer pad can be provided on the top of the shell to further reduce the foreign body sensation caused by the safety lock 3 to the passenger.

[0088] Referring to Figure 1 and Figure 2As shown in the figure, the safety belt assembly of the embodiment includes a safety belt 4, and a retractor 7 and a fixed support 11 respectively arranged on the left and right sides of the safety lock 3. The two ends of the safety belt 4 are connected with the retractor 7 and the fixed support 11 respectively, and a lock tongue for connecting with the safety lock 3 is arranged on the safety belt 4. The fixed support 11 is fixed on the backrest framework, and the retractor 7 is fixed on the backrest framework through a third support 9. The retractor 7 can adopt the existing structure, and mainly includes a shell, a reel assembly, a locking mechanism and a spring device. The two ends of the reel assembly are connected with the shell through bearings, and the head end of the safety belt 4 is fixed thereon. The spring device is internally provided with a strong torsion spring, one end of which is connected with the reel, and the other end is connected with the shell or a support structure. The locking mechanism includes an acceleration sensor, a vehicle inclination sensor and a mechanical locking assembly including a pawl and a ratchet wheel.

[0089] In addition, in the embodiment, the specific structure of the lock tongue and the safety belt 4, as well as the layout of the safety belt 4 in the seat structure, can be implemented according to the existing mature technical standards. In view of the wide application of these aspects in the related field at present, further elaboration is not made here to avoid repetition.

[0090] In addition, in the specific implementation, the driving motor 8 can be electrically connected with the control module built in the seat, and a manual button can be arranged on the side of the seat or the armrest. When the parent presses the button, the micro switch inside the button is closed, an electrical signal is generated and transmitted to the control module built in the seat. After recognizing the signal, the control module sends a start and forward rotation instruction to the driving motor 8, the driving motor 8 drives the child backrest 2 to extend, and when the child gets on, the safety belt 4 is pulled out, and the lock tongue is inserted into the safety lock 3.

[0091] Based on the above overall description, the seat structure of the embodiment can hide the child backrest 2 under the seat cushion 1, the opening at the rear of the seat cushion is matched with the child backrest 2, the top surface of the backrest is flush with the seat cushion in the hidden state, which not only maintains the regularity of the space in the vehicle, but also meets the needs of children riding at any time, greatly improving the flexible utilization rate of the space. Once there is a need for children to ride, the child backrest 2 can be quickly and conveniently raised from under the seat cushion, and a safe and comfortable exclusive riding area is built for the children, which can greatly improve the utilization efficiency of the space in the vehicle. Moreover, the arrangement of multiple safety locks 3 can meet the riding needs of children of different sizes and have good riding comfort.

[0092] In addition, the embodiment also provides a vehicle provided with the seat structure as described above.

[0093] The vehicle described in the embodiment can improve the riding safety of children by setting the seat structure as described above, and the child backrest 2 can be hidden under the seat cushion 1, so that when the child seat is not used, the rear space of the vehicle can be fully released and can be flexibly used for passenger seating or loading articles. At the same time, the child seat state can be automatically switched by the driving part, so that the use process of the child seat can be greatly simplified.

[0094] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A seat structure, characterized in that: Includes a child backrest (2) and drive unit on the seat cushion (1), a seat belt assembly on the seat back (5), and a safety lock (3) on the seat cushion (1); The drive unit is connected to the child backrest (2) in a transmission manner. The drive unit can drive the child backrest (2) to move and switch between a hidden state and a use state. In the hidden state, the child backrest (2) is located below the seat cushion (1). In the use state, at least part of the child backrest (2) is located above the seat cushion (1) and defines a child sitting space between the child backrest (2) and the seat cushion (1). The seat belt assembly can be connected to the safety lock (3) and lock the child in the child riding space.

2. The seat structure according to claim 1, characterized in that: The child backrest (2) is slidably mounted on the seat cushion (1); A guide portion is provided between the seat cushion (1) and the child backrest (2), the guide portion being used to guide the child backrest (2) to slide relative to the seat cushion (1).

3. The seat structure according to claim 2, characterized in that: The guide portion includes a guide plate (6) disposed on the seat cushion (1) and an arc-shaped groove (203) disposed on the child backrest (2); The guide plate (6) is inserted into the arc-shaped groove (203) and is used to guide the child backrest (2) to slide.

4. The seat structure according to claim 1, characterized in that: The drive unit includes a drive motor (8) mounted on the seat cushion (1), and the drive shaft of the drive motor (8) is provided with a drive gear (14); The back of the child backrest (2) is provided with a transmission rack (205) that meshes with the drive gear (14).

5. The seat structure according to claim 4, characterized in that: The back of the child backrest (2) is provided with limiting protrusions (204) located on both opposite sides of the transmission rack (205); The drive gear (14) is inserted between the limiting protrusions (204) on both sides and meshes with the transmission rack (205).

6. The seat structure according to claim 4, characterized in that: The child backrest (2) is arc-shaped, and the transmission rack (205) conforms to the arc shape of the child backrest (2); and / or, The child includes a main body portion (201) and side portions (202) located on two opposite sides of the main body portion (201).

7. The seat structure according to claim 1, characterized in that: The safety locks (3) are a plurality of locks spaced apart along the length of the seat cushion (1); and / or, The safety lock (3) is located in the middle of the width direction of the seat cushion (1).

8. The seat structure according to claim 1, characterized in that: The seat belt assembly includes a seat belt (4), and retractors (7) and fixing brackets (11) respectively located on the left and right sides of the safety lock (3); The two ends of the safety belt (4) are connected to the retractor (7) and the fixed bracket (11) respectively, and the safety belt (4) is provided with a locking tongue for connecting to the safety lock (3).

9. The seat structure according to any one of claims 1 to 8, characterized in that: The seat cushion (1) has an opening at the rear, through which the child backrest (2) passes; In the hidden state, the child backrest (2) blocks the opening, and the top surface of the child backrest (2) is flush with the seat cushion (1).

10. A vehicle, characterized in that: The vehicle is equipped with a seat structure as described in any one of claims 1 to 9.

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