Seat back structure and vehicle

Abstract

The application relates to the technical field of vehicles and provides a seat back structure and a vehicle. The back structure comprises a back body, a supporting body rotatably arranged on the back body, a locking part arranged between the back body and the top of the supporting body, and an unlocking part connected with the locking part; the locking part can lock the supporting body on the back body, and when the unlocking part is pulled backward, the locking part can be driven to release the locking of the supporting body, so that the supporting body is flipped to the rear side of the back body. According to the application, the supporting body is rotatably arranged on the back body, when the supporting body is flipped to the rear side of the back body, passengers in the rear row can conveniently put their legs on the supporting body, the diversified comfort needs of the passengers are met, the utility of the seat is increased, and the use quality of the whole vehicle is improved. Meanwhile, the locking part is arranged, so that the supporting body can be locked on the back body, the space occupied by the supporting body is reduced, and the space utilization rate in the vehicle is improved.

Description

Technical Field

[0001] This application relates to the field of vehicle seat technology, and in particular to a seat back structure and a vehicle. Background Technology

[0002] As a key component of vehicle seats, the seat backrest's main function is to provide stable support for the passenger's back, thereby effectively improving riding comfort.

[0003] In related technologies, the design of backrest seats usually only focuses on the backrest's support and wrapping of the passenger's back and the backrest angle adjustment function, making the backrest function singular and not conducive to meeting the diverse comfort needs of passengers, thus resulting in poor seat functionality. Utility Model Content

[0004] In view of this, this application aims to propose a seat back structure to increase the functionality of the seat and improve the overall quality of the vehicle.

[0005] To achieve the above objectives, the technical solution of this application is implemented as follows: A seat back structure includes a backrest body, a support body rotatably disposed on the backrest body, a locking part disposed between the top of the backrest body and the support body, and an unlocking member connected to the locking part. The locking part can lock the support body onto the backrest body, and when the unlocking part is pulled backward, it can drive the locking part to release the lock on the support body, so that the support body can flip to the rear side of the backrest body.

[0006] Furthermore, the backrest body is provided with a through-hole receiving cavity, and the support body is adapted to the receiving cavity; the support body can be locked in the receiving cavity by the locking part and support the occupant's back.

[0007] Furthermore, the locking part includes a lock box disposed on the support body, a locking plate slidably disposed in the lock box, an elastic member disposed between the locking plate and the lock box, and a locking groove disposed on the backrest body; under the action of the elastic member, the locking plate is engaged in the locking groove and locks the support body.

[0008] Furthermore, the backrest body is provided with a locking post, the locking groove is provided on the top of the locking post, and the lock box is provided with a clearance opening for avoiding the locking post; and / or, the elastic element is a spring provided between the locking plate and the lock box.

[0009] Furthermore, the top of the locking plate is provided with a connecting hole and a notch, and a guide post is provided on the lock box corresponding to the notch; the unlocking member is connected in the connecting hole, and the elastic member is located in the notch and sleeved on the guide post.

[0010] Furthermore, the lock box protrudes from the top of the support body, and the backrest body is provided with a clearance groove located above the receiving cavity; the clearance groove communicates with the receiving cavity and is used to avoid the lock box.

[0011] Furthermore, the backrest body is provided with a limiting part, which is used to abut against the support body to limit the rotation angle of the support body.

[0012] Furthermore, the support body includes a support frame, the bottom end of which has a downwardly extending connecting arm, and the support frame is rotatably mounted on the lower crossbeam of the backrest body via the connecting arm; the limiting part includes a limiting block disposed on the lower crossbeam, the limiting block being able to abut against the connecting arm to limit the rotation angle of the support body.

[0013] Furthermore, the unlocking component includes a pull strap connected to the locking portion.

[0014] Compared with related technologies, this application has the following advantages: (1) The seat back structure described in this application, by providing a support body that is rotatably mounted on the backrest body, allows rear passengers to easily place their legs on the support body after the support body is flipped to the rear side of the backrest body, thereby meeting the diverse comfort needs of passengers, increasing the functionality of the seat, and improving the overall quality of the vehicle. At the same time, by providing a locking part, the support body can be locked onto the backrest body, realizing the storage of the support body, reducing the space occupied by the support body, and improving the utilization rate of the interior space.

[0015] (2) By setting a receiving cavity that runs through the backrest body and adapting the support body to the receiving cavity, when the support body is locked in the receiving cavity, it can support the passenger's back and reduce the space occupied by both the backrest body and the support body. At the same time, when the support body flips to the rear of the backrest body to support the passenger's legs, the receiving cavity also makes it easy for the passenger to stretch their legs onto the seat cushion of the front seat, thereby making it easier for the rear passenger to straighten their legs and providing a larger area of ​​support for the passenger's legs, which helps to further improve the riding comfort.

[0016] (3) By setting the locking part including a locking plate and an elastic element, the locking plate can automatically engage with the locking groove under the guidance of the lock box and the drive of the elastic element, thus locking the support body and effectively ensuring the reliability of the support body after locking. At the same time, the support body can be unlocked by compressing the elastic element, which also facilitates the quick unlocking of the locking part.

[0017] (4) By setting a locking pin and a clearance opening on the lock box, the locking pin can be easily inserted into the lock box, thereby making it easy for the locking plate to be aligned with the locking groove and locked in the locking groove under the push of the elastic element.

[0018] Setting the elastic element as a spring gives it good fatigue resistance, which helps ensure the stability of the locking structure. Springs are also widely used, easy to obtain, and have good feasibility.

[0019] (5) By providing a notch, space can be provided for the guide post, and the overall space occupied by the locking plate can be reduced. In addition, the guide post allows the elastic element to move along the axial direction of the guide post during compression or resetting extension, thereby facilitating the application of a preset force to the locking plate by the elastic element, improving the smoothness of the locking plate's sliding, and thus helping to ensure the reliability of locking and unlocking operations. At the same time, a connecting hole is provided at the top of the locking plate, which facilitates the connection of the unlocking part to the locking plate, so that force can be applied to the locking plate through the unlocking part.

[0020] (6) By setting the clearance groove, the lock box can be stored in the backrest body, reducing the space occupied by the lock box. At the same time, storing the lock box in the backrest body can effectively prevent the lock box from bumping into the passenger, thus helping to ensure the safety of the passenger.

[0021] (7) By setting a limiting part, it helps the support body to flip to the rear side of the backrest body and be in a suitable position so that the support body can support the seat cushion of the rear seat, thereby improving the passenger's riding comfort.

[0022] (8) By setting a support body including a connecting arm and a limiting part including a limiting block located on the lower crossbeam, the limiting of the support body is achieved through the contact between the connecting arm and the limiting block. The structure is simple and easy to design and implement, and can effectively ensure the stability of the support for the passenger's legs.

[0023] (9) By setting the unlocking part including the pull strap, it is convenient for passengers to apply force to the locking plate from different directions, which compresses the elastic element and helps to improve the ease of use of the unlocking part. At the same time, the pull strap is made of soft material and is located in a position that is easy for passengers to access, which can effectively ensure passenger safety.

[0024] This application also proposes a vehicle having a seat back structure as described above.

[0025] The vehicle described in this application, by providing the seat back structure as described in the first aspect, can better meet the diverse comfort needs of passengers, thereby increasing the functionality of the seat and improving the overall quality of the vehicle. Attached Figure Description

[0026] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the seat back structure described in the embodiments of this application; Figure 2 for Figure 1 Another perspective view of the structure shown; Figure 3 This is a schematic diagram of the structure of the support body after it is flipped to the rear side of the backrest body according to the embodiment of this application; Figure 4 This is a schematic diagram of the structure of the support body installed on the lower crossbeam according to an embodiment of this application; Figure 5 for Figure 4 Another perspective view of the structure shown; Figure 6 for Figure 5 A magnified view of part A in the middle; Figure 7 This is a schematic diagram of the supporting frame arranged on the lower crossbeam according to an embodiment of this application; Figure 8 for Figure 7 A magnified view of part B in the middle section; Figure 9 This is a schematic diagram of the overall structure of the support body described in the embodiments of this application; Figure 10 This is a schematic diagram of the overall structure of the support frame described in the embodiments of this application; Figure 11 for Figure 5 A magnified view of part C in the middle; Figure 12 This is a schematic diagram showing the locking part in the locked state according to an embodiment of this application; Figure 13 This is a schematic diagram of the structure of the locking pin installed on the backrest body according to an embodiment of this application; Figure 14 for Figure 13 Enlarged view of part D in the middle; Figure 15 This is a schematic diagram of the structure of the lock pin locking inside the lock box according to an embodiment of this application; Figure 16 This is a schematic diagram of the lock box structure described in an embodiment of this application; Figure 17 This is a cross-sectional view of the locking plate located inside the lock box according to an embodiment of this application.

[0027] Explanation of reference numerals in the attached figures: 1. Backrest body; 101. Locking post; 1011. Locking groove; 102. Lower crossbeam; 103. Backrest keel; 1a. Receiving cavity; 1b. Clearance groove; 2. Support body; 201. Support frame; 2011. Reinforcing beam; 202. Connecting arm; 3. Locking part; 301. Lock box; 3011. Clearance opening; 3012. Clearance hole; 3013. Mounting ear; 302. Locking plate; 3021. Connecting hole; 3022. Notch; 303. Elastic element; 304. Guide post; 4. Unlocking parts; 401. Pull strap; 5. Limiting part; 501. Limiting block; 6. Connecting plate; 601. Through hole; 7. Support; 701. Base plate; 702. Connecting ear; 703. Rotating shaft. Detailed Implementation

[0028] To make the technical solution and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0030] Furthermore, it should be noted that in the description of this application, if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, these are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] Furthermore, in the description of this application, unless otherwise expressly defined, the terms "installation," "connection," "joining," and "connector" 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 between two components. Those skilled in the art can understand the specific meaning of the above terms in this application in light of the specific circumstances.

[0032] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0033] The present application will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0034] An embodiment of the first aspect of this application provides a seat back that, while meeting the need to support the passenger's back, also provides leg support for rear passengers through its innovative design. This satisfies the diverse comfort needs of passengers, increases the functionality of the seat, and thus improves the overall quality of the vehicle.

[0035] In related technologies, the design of seat backrests usually only focuses on the backrest's support and wrapping performance for the passenger's back and the backrest angle adjustment function. This results in the seat backrest lacking the function of supporting the legs of rear passengers. The backrest's function is singular, which is not conducive to meeting the leg support needs of rear passengers. Consequently, it is not conducive to meeting the diverse comfort needs of passengers, resulting in poor seat functionality and thus hindering the improvement of the overall vehicle's quality of use.

[0036] In view of this, in order to overcome the shortcomings of the related technology, the seat back structure of this embodiment combines... Figures 1 to 9 As shown, the overall design includes a backrest body 1, a support body 2 rotatably mounted on the backrest body 1, a locking part 3 located between the top of the backrest body 1 and the support body 2, and an unlocking part 4 connected to the locking part 3.

[0037] The locking part 3 can lock the support body 2 onto the backrest body 1, and when the unlocking part 4 is pulled backward, it can drive the locking part 3 to release the lock on the support body 2, so that the support body 2 can flip to the rear side of the backrest body 1.

[0038] Therefore, by setting a support 2 that is rotatably mounted on the backrest body 1, when the support 2 is flipped to the rear side of the backrest body 1, it is convenient for rear passengers to place their legs on the support 2, so as to meet the diverse comfort needs of passengers, thereby increasing the functionality of the seat and improving the overall quality of the vehicle.

[0039] Meanwhile, by setting the locking part 3, the support body 2 can be locked onto the backrest body 1, realizing the storage of the support body 2. When the support body 2 is not needed, the support body 2 can be folded up to reduce the space occupied by the support body 2 and improve the utilization rate of the interior space.

[0040] Based on the above overall introduction, it can be understood that the rear side of the backrest body 1 refers to the side closer to the rear of the vehicle along the length of the vehicle. When the support body 2 is flipped to the rear side of the backrest body 1, the support body 2 protrudes outside the backrest body 1, so as to support the legs of the passenger behind the backrest body 1.

[0041] In some of the exemplary implementations, combined with Figures 1 to 3 As shown, the backrest body 1 has a through-hole receiving cavity 1a, and the support body 2 is adapted to the receiving cavity 1a; the support body 2 can be locked in the receiving cavity 1a by the locking part 3 and supports the back of the occupant.

[0042] Therefore, by providing a cavity 1a that extends through the backrest body 1 and fitting the support body 2 into this cavity 1a, the support body 2 can provide back support when locked within the cavity 1a. Furthermore, compared to the support body 2 being stowed and attached to the backrest body 1, this design reduces the space occupied by both the backrest body 1 and the support body 2. This arrangement also helps maintain the thickness of the support body 2 while keeping the total thickness of the backrest body 1 and the support body 2 constant, ensuring good elastic support and further improving comfort.

[0043] At the same time, when the support body 2 flips to the rear side of the backrest body 1 to support the passenger's legs, the receiving cavity 1a also makes it easier for the passenger to stretch their legs onto the seat cushion of the front seat, thereby making it easier for the rear passenger to straighten their legs and providing a larger area of ​​support for the passenger's legs, which helps to further improve the comfort of riding.

[0044] It is understandable that the support body 2 is adapted to the receiving cavity 1a, meaning that when the support body 2 is flipped forward and locked in the receiving cavity 1a by the locking part 3, the support body 2 can fill the receiving cavity 1a, so that the backrest body 1 can provide indistinguishable support for the passenger's back compared with the backrest body 1 without the receiving cavity 1a.

[0045] In some of the exemplary implementations, combined with Figures 9 to 17 As shown, the locking part 3 includes a lock box 301 disposed on the support body 2, a locking plate 302 slidably disposed within the lock box 301, an elastic member 303 disposed between the locking plate 302 and the lock box 301, and a locking groove 1011 disposed on the backrest body 1. Under the action of the elastic member 303, the locking plate 302 is engaged in the locking groove 1011 and locks the support body 2.

[0046] Therefore, by setting the locking part 3 to include a locking plate 302 and an elastic element 303, the locking plate 302 can automatically engage with the locking groove 1011 under the guidance of the lock box 301 and the drive of the elastic element 303, thereby completing the locking of the support body 2 and effectively ensuring the reliability of the support body 2 after locking.

[0047] Meanwhile, by compressing the elastic body, the locking plate 302 can be disengaged from the locking groove 1011, thereby unlocking the support body 2. Therefore, the locking part 3, which includes the locking plate 302 and the elastic member 303, also has the effect of facilitating the quick unlocking of the locking part 3.

[0048] In some of the exemplary implementations, combined with Figure 17 As shown, as an optional embodiment of the elastic element 303, the elastic element 303 is a spring disposed between the locking plate 302 and the lock box 301.

[0049] Therefore, by setting the elastic element 303 as a spring, the elastic element 303 has good fatigue resistance, which can effectively reduce the influence of external factors on its elastic performance, help ensure the stability of the locking structure, and springs are widely used, easy to obtain, and have good implementation.

[0050] Of course, it is understood that the elastic element 303 is set as a spring in this embodiment only as a preferred implementation. The elastic element 303 can also be an elastic body made of other materials, such as rubber, so that the elastic body can contract when compressed by external force and release elastic potential energy to reset after the external force disappears, so that the locking plate 302 can be kept in the locking groove 1011 and the locking plate 302 can be disengaged from the locking groove 1011 when an external force is applied manually.

[0051] In some of the exemplary implementations, combined with Figures 11 to 17As shown, the backrest body 1 is provided with a locking post 101, a locking groove 1011 is provided on the top of the locking post 101, and the lock box 301 is provided with a clearance opening 3011 for avoiding the locking post 101.

[0052] Therefore, by providing the locking pin 101 and the clearance opening 3011 on the lock box 301, the locking pin 101 can be easily inserted into the lock box 301, thereby facilitating the alignment of the locking plate 302 with the locking groove 1011 and locking it in the locking groove 1011 under the push of the elastic member 303.

[0053] It is understood that the backrest body 1 has a backrest rib 103 that maintains the structural strength of the backrest, and a foam body and a cover that cover the backrest rib 103 to improve seat comfort. Furthermore, when the receiving cavity 1a is provided, the foam body and the cover extend into the receiving cavity 1a, thus covering the receiving cavity 1a. The arrangement of the foam body and the cover can be referred to in relevant technologies and will not be elaborated here.

[0054] Based on the above settings, it is worth noting that, in order to effectively ensure the reliability of the locking pin 101 installed on the backrest body 1, so that when the locking plate 302 is inserted into the locking groove 1011, the support body 2 can withstand the backrest support and remain stable, in this embodiment, the locking pin 101 is fixed on the backrest keel 103, thus ensuring the reliability of the locking pin 101 installation.

[0055] In specific implementation, the locking pin 101 is preferably cylindrical and has a guide surface. This design facilitates the insertion of the locking pin 101 through the clearance opening 3011 when the support body 2 is stored, thus simplifying storage of the support body 2. Furthermore, during storage, simply continue rotating the support body 2 until the locking plate 302 is aligned with the locking groove 1011. Under the action of the elastic member 303, the locking plate 302 is directly inserted into the locking groove 1011, thus facilitating locking of the locking part 3.

[0056] It is worth noting that, in order to facilitate the insertion of the locking pin 101 into the lock box 301 through the clearance opening 3011, thereby forming a locking engagement with the locking plate 302, the clearance opening 3011 in this embodiment is preferably located at the lower edge of the lock box 301. This allows the lock box 301 to better avoid the locking pin 101, so that the lock box 301, which rotates synchronously with the support body 2, can be adapted to match the locking pin 101 fixedly held on the backrest body 1. In specific implementations, the clearance opening 3011 can also be flared to further improve the locking smoothness of the locking part 3.

[0057] In some of the exemplary implementations, combined with Figures 12 to 17As shown, the top of the locking plate 302 is provided with a connecting hole 3021 and a notch 3022. Corresponding to the notch 3022, the lock box 301 is provided with a guide post 304. The unlocking member 4 is connected in the connecting hole 3021, and the elastic member 303 is located in the notch 3022 and sleeved on the guide post 304.

[0058] Therefore, by providing notch 3022, space can be provided for the guide post 304, and the overall space occupied by the locking plate 302 can be reduced. In addition, the guide post 304 allows the elastic element 303 to move along the axial direction of the guide post 304 during compression or resetting extension, thereby facilitating the elastic element 303 to provide a force in a preset direction on the locking plate 302, which can improve the smoothness of the sliding of the locking plate 302, thus helping to ensure the reliability of locking and unlocking operations.

[0059] Meanwhile, a connection hole 3021 is provided on the top of the locking plate 302 to facilitate the connection of the unlocking part to the locking plate 302, so that the unlocking part can apply force to the locking plate 302.

[0060] It is understandable that the purpose of setting the guide post 304 is to effectively ensure that the elastic element 303 provides a force in a preset direction to the locking plate 302, so as to ensure the stability of the force exerted by the elastic element 303 on the locking plate 302. In order to effectively ensure that the locking plate 302 can move within the lock box 301, the guide post 304 is set to maintain a distance from the locking plate 302 even when the elastic element 303 is in a compressed state.

[0061] It is worth noting that the purpose of setting the connection hole 3021 is to facilitate the installation of the unlocking component 4. For this purpose, the lock box 301 has a corresponding clearance hole 3012 to facilitate the installation and use of the unlocking component 4.

[0062] In some of the exemplary implementations, combined with Figures 2 to 4 As shown, the lock box 301 protrudes from the top of the support body 2, and the backrest body 1 is provided with a relief groove 1b located above the receiving cavity 1a. The relief groove 1b communicates with the receiving cavity 1a and is used to avoid the lock box 301.

[0063] Therefore, by setting the clearance groove 1b, the lock box 301 can be easily stored inside the backrest body 1. Compared with the lock box 301 being attached to the backrest body 1, the space occupied by the lock box 301 can be effectively reduced, and the exquisite appearance of the backrest body 1 can be effectively guaranteed.

[0064] Meanwhile, the lock box 301 is housed inside the backrest body 1. The foam and the protective surface of the backrest body 1 can accommodate the lock box 301, thereby effectively preventing the lock box 301 from bumping into the passenger and thus helping to ensure the passenger's safety.

[0065] In some of the exemplary implementations, combined with Figures 6 to 8 As shown, the backrest body 1 is provided with a limiting part 5, which is used to abut against the support body 2 to limit the rotation angle of the support body 2.

[0066] By setting the limiting part 5, it helps the support body 2 to flip to the rear side of the backrest body 1 and be in a suitable position so that the support body 2 can support the seat cushion of the rear seat. For example, the support body 2 and the rear seat are at the same height, which helps to improve passenger comfort.

[0067] In some of the exemplary implementations, combined with Figures 5 to 10 As shown, the support body 2 includes a support frame 201, the bottom end of which has a downwardly extending connecting arm 202. The support frame 201 is rotatably mounted on the lower crossbeam 102 of the backrest body 1 via the connecting arm 202. The limiting part 5 includes a limiting block 501 provided on the lower crossbeam 102. The limiting block 501 can abut against the connecting arm 202 to limit the rotation angle of the support body 2.

[0068] Therefore, by setting the support body 2 including the connecting arm 202 and setting the limiting part 5 including the limiting block 501 located on the lower crossbeam 102, the limiting of the support body 2 is achieved through the contact between the connecting arm 202 and the limiting block 501. The structure is simple and easy to design and implement, and can effectively ensure the stability of the support for the passenger's legs.

[0069] In specific implementation, the limiting block 501 can be set as an elastic block, for example, a rubber block. When the connecting arm 202 contacts the limiting block 501, noise generation can be effectively avoided. Furthermore, when the elastic block is compressed, it has a certain strength and can stably support the connecting arm 202. As an optional implementation method for connecting the limiting block 501 to the lower crossbeam 102, if the limiting block 501 is a rubber block, it can be fixed to the lower crossbeam 102 using conventional methods such as adhesive bonding.

[0070] Based on the above introduction, in order to effectively ensure the reliability of the lock box 301 set on the support body 2, in this embodiment, a connecting plate 6 is preferably provided between the lock box 301 and the support frame 201, and the lock box 301 is fixed on the support frame 201 by the connecting plate 6.

[0071] In specific implementation, combined with Figure 15 and Figure 16As shown, the connecting plate 6 has a through hole 601 with a corresponding clearance opening 3011 to effectively prevent the locking pin 101 from being inserted into the lock box 301 due to the setting of the connecting plate 6. To facilitate the assembly and disassembly of the lock box 301, mounting ears 3013 are provided on both sides of the lock box 301 along the width direction of the lock box 301, and bolts are provided between the mounting ears 3013 and the connecting plate 6. The bolts realize the detachable connection between the connecting plate 6 and the mounting ears 3013, thereby realizing the detachable connection between the connecting plate 6 and the lock box 301. This setting makes it convenient to install the lock box 301 after the backrest body 1 and the support body 2 are formed.

[0072] Preferably, the connecting plate 6 can be configured such that one end of the connecting plate 6 near the supporting frame 201 wraps around and is fixed to the supporting frame 201. Specifically, welding, riveting or threaded connection can be used to fix the supporting frame 201 and the connecting plate 6.

[0073] It is worth noting that, as an optional implementation of the supporting frame 201, in this embodiment, the supporting frame 201 is formed by bending a single piece of tubing. This configuration effectively ensures the structural strength of the supporting frame 201 and facilitates its forming. Simultaneously, to effectively ensure and improve the structural strength of the support body 2, in this embodiment, multiple transversely arranged reinforcing beams 2011 are fixedly connected to the supporting frame 201, thus effectively ensuring the structural strength of the support body 2.

[0074] It is also worth noting that, as an optional implementation of the connecting arm 202, in this embodiment the connecting arm 202 is set as an "L"-shaped profile, and two connecting arms 202 are grouped together. One end of the two connecting arms 202 in the same group is respectively wrapped around and fixed to the two free ends of the supporting frame 201, and the remaining two ends of the connecting arm 202 are rotatably connected to the lower crossbeam 102.

[0075] By setting the connecting arm 202 to be L-shaped, the support body 2 can rotate upward and be placed in the receiving cavity 1a, and the support body 2 can rotate downward so that the connecting arm 202 rests on the limiting block 501, so as to maintain the support stability of the support body 2.

[0076] Based on the above overview, as an optional implementation where the connecting arm 202 is rotatably connected to the lower crossbeam 102, in this embodiment, the connecting arm 202 is rotatably connected to the lower crossbeam 102 via a support 7. Specifically, the support 7 includes a base plate 701 fixed to the lower crossbeam 102, and connecting ears 702 spaced along the width direction of the seat on the base plate 701. The connecting ears 702 are correspondingly provided with the connecting arms 202, and the connecting ears 702 and the connecting arms 202 are rotatably connected via a pivot 703.

[0077] It is understood that the lower crossbeam 102 shown above is part of the backrest keel 103, and as described above, it is only an optional embodiment for the rotatable connection between the connecting arm 202 and the lower crossbeam 102, so as to enable the support body 2 to rotate upward and be placed in the receiving cavity 1a, and to enable the support body 2 to rotate downward so that the connecting arm 202 is placed on the limiting block 501.

[0078] It is also understood that the support body 2 also includes a foam body and a protective surface covering the support frame 201. Preferably, the foam body and protective surface are made of the same material and color as the foam body and protective surface on the backrest body 1, and their arrangement can refer to the arrangement of the foam body and protective surface on the backrest in related technologies.

[0079] In some of the exemplary implementations, combined with Figure 10 and Figure 17 As shown, the unlocking component 4 includes a pull strap 401 connected to the locking part 3.

[0080] Therefore, by setting the unlocking part 4 to include a pull strap 401, it is convenient for passengers to apply force to the locking plate 302 from different directions, thereby compressing the elastic member 303. This helps to improve the ease of use of the unlocking part. At the same time, the pull strap 401 is made of a soft material, and the soft unlocking part is in a position that is easy for passengers to access, which can effectively ensure passenger safety.

[0081] Understandably, based on the connection hole 3021 provided in the locking plate 302, a pull strap 401 is fitted inside the connection hole 3021 to connect with the locking plate 302. Furthermore, to facilitate passenger access to the pull strap 401, the pull strap 401 is positioned outside the clearance groove 1b when in the drooping state, thus facilitating passenger pulling on the pull strap 401. Simultaneously, to improve comfort during unlocking, the pull strap 401 is made of a soft and flexible material and has a relatively wide width.

[0082] It is worth noting that, regarding the seat back structure of this embodiment, based on the above exemplary embodiments, in specific implementation, as a preferred embodiment, it is still composed of... Figures 1 to 1 to Figure 17 As shown, it may include, for example, a backrest body 1, a support 2 rotatably mounted on the backrest body 1, a locking part 3 located between the top of the backrest body 1 and the support 2, and an unlocking member 4 connected to the locking part 3. The locking part 3 can lock the support 2 onto the backrest body 1, and when the unlocking member 4 is pulled backward, it can cause the locking part 3 to release the lock on the support 2, so that the support 2 flips to the rear side of the backrest body 1.

[0083] The backrest body 1 has a through-hole receiving cavity 1a, and the support body 2 is adapted to the receiving cavity 1a. The support body 2 can be locked in the receiving cavity 1a by the locking part 3 and supports the back of the occupant. Furthermore, the lock box 301 protrudes from the top of the support body 2, and the backrest body 1 has a relief groove 1b located above the receiving cavity 1a. The relief groove 1b communicates with the receiving cavity 1a and is used to avoid the lock box 301.

[0084] The locking part 3 includes a lock box 301 disposed on the support body 2, a locking plate 302 slidably disposed within the lock box 301, a spring disposed between the locking plate 302 and the lock box 301, and a locking groove 1011 disposed on the backrest body 1. Under the action of the elastic member 303, the locking plate 302 is engaged in the locking groove 1011 and locks the support body 2. Specifically, the backrest body 1 is provided with a locking post 101, the locking groove 1011 is disposed on the top of the locking post 101, and the lock box 301 is provided with a clearance opening 3011 for avoiding the locking post 101.

[0085] Specifically, the support body 2 includes a support frame 201, the bottom end of which has a downwardly extending connecting arm 202. The support frame 201 is rotatably mounted on the lower crossbeam 102 of the backrest body 1 via the connecting arm 202. The backrest body 1 is provided with a limiting part 5, which includes a limiting block 501 provided on the lower crossbeam 102. The limiting block 501 can abut against the connecting arm 202 to limit the rotation angle of the support body 2.

[0086] In the preferred embodiment of the above seat back structure, the specific configuration and arrangement of the backrest body 1, locking part 3, support body 2, etc. can still be referred to the description in the above exemplary embodiments. Furthermore, in this preferred embodiment, the beneficial effects brought about by the design of the backrest body 1, support body 2, and locking part 3, etc., can also be referred to the description in the above exemplary embodiments.

[0087] The seat back structure of this embodiment adopts the design described above. By setting a support 2 that is rotatably mounted on the backrest body 1, when the support 2 is flipped to the rear side of the backrest body 1, it is convenient for rear passengers to rest their legs on the support 2, thereby meeting the diverse comfort needs of passengers, increasing the functionality of the seat, and improving the overall quality of the vehicle. At the same time, by setting a locking part 3, the support 2 can be locked onto the backrest body 1, realizing the storage of the support 2, reducing the space occupied by the support 2, and improving the utilization rate of interior space.

[0088] An embodiment of the second aspect of this application provides a vehicle having a seat back structure as described in the first aspect above.

[0089] The vehicle described in this embodiment, by setting the seat back structure as described in the first aspect, can better meet the diverse comfort needs of passengers, thereby increasing the functionality of the seats and improving the overall quality of the vehicle.

[0090] The above descriptions are merely some embodiments of this application and are not intended to limit this application. The technical features or structures in the foregoing different embodiments can be arbitrarily combined to form other specific technical solutions as needed. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of the claims of this application.

Claims

1. A seat back structure, characterized in that: It includes a backrest body (1), a support (2) rotatably disposed on the backrest body (1), a locking part (3) disposed between the top of the backrest body (1) and the support (2), and an unlocking part (4) connected to the locking part (3). The locking part (3) can lock the support body (2) onto the backrest body (1), and when the unlocking part (4) is pulled back, it can drive the locking part (3) to release the lock on the support body (2) so that the support body (2) flips to the rear side of the backrest body (1).

2. The seat back structure according to claim 1, characterized in that: The backrest body (1) is provided with a through cavity (1a), and the support body (2) is adapted to the cavity (1a); The support (2) can be locked in the receiving cavity (1a) by the locking part (3) and support the back of the occupant.

3. The seat back structure according to claim 2, characterized in that: The locking part (3) includes a lock box (301) disposed on the support body (2), a locking plate (302) slidably disposed in the lock box (301), an elastic member (303) disposed between the locking plate (302) and the lock box (301), and a locking groove (1011) disposed on the backrest body (1); Under the action of the elastic member (303), the locking plate (302) is engaged in the locking groove (1011) and locks the support body (2).

4. The seat back structure according to claim 3, characterized in that: The backrest body (1) is provided with a locking post (101), the locking groove (1011) is provided on the top of the locking post (101), and the lock box (301) is provided with a clearance opening (3011) for avoiding the locking post (101); and / or, The elastic element (303) is a spring disposed between the locking plate (302) and the lock box (301).

5. The seat back structure according to claim 3, characterized in that: The top of the locking plate (302) is provided with a connecting hole (3021) and a notch (3022), and a guide post (304) is provided on the lock box (301) corresponding to the notch (3022); The unlocking member (4) is connected in the connection hole (3021), and the elastic member (303) is located in the notch (3022) and sleeved on the guide post (304).

6. The seat back structure according to claim 3, characterized in that: The lock box (301) protrudes from the top of the support (2), and the backrest body (1) is provided with a relief groove (1b) located above the receiving cavity (1a); The clearance groove (1b) communicates with the receiving cavity (1a) and is used to avoid the lock box (301).

7. The seat back structure according to claim 1, characterized in that: The backrest body (1) is provided with a limiting part (5), which is used to abut against the support body (2) to limit the flipping angle of the support body (2).

8. The seat back structure according to claim 7, characterized in that: The support body (2) includes a support frame (201), the bottom end of which has a downwardly extending connecting arm (202), and the support frame (201) is rotatably mounted on the lower crossbeam (102) of the backrest body (1) via the connecting arm (202). The limiting part (5) includes a limiting block (501) disposed on the lower crossbeam (102), the limiting block (501) being able to abut against the connecting arm (202) to limit the rotation angle of the support (2).

9. The seat back structure according to any one of claims 1 to 8, characterized in that: The unlocking component (4) includes a pull strap (401) connected to the locking part (3).

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

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