Seat structure and vehicle

Abstract

The application relates to the technical field of vehicles, and provides a seat structure and a vehicle. The seat structure comprises a base, a seat cushion arranged on the base through a connecting rod assembly, and a first driving part arranged on the base and connected in transmission with the seat cushion through a rack unit. The first driving part can drive the seat cushion to slide forward through the rack unit, and the front end of the seat cushion is lifted under the traction of the connecting rod assembly. The seat structure of the application is provided with the rack unit and the connecting rod assembly, so that the seat cushion can slide forward and the front end can be lifted through the cooperation of the first driving part, the rack unit and the connecting rod assembly, and the composite motion of the seat cushion can be realized through a single driving source. The driving source for driving the backrest does not need to be additionally arranged, the stable switching from the design position to the zero-gravity posture can be realized, the structure is simple, and the riding comfort is good.

Description

Technical Field

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

[0002] In related technologies, achieving a zero-gravity posture in a seat generally relies on the coordinated adjustment of the backrest and seat cushion. This typically requires at least two drive components (such as motors) working in conjunction with complex linkages and rotation mechanisms to control the backrest angle and seat cushion position, resulting in a complex overall structure. This not only increases manufacturing costs but also makes the structure prone to instability due to errors in the linkage of multiple components, such as stuttering, shaking, or abnormal noises during adjustment. In addition, the rotation of the backrest may cause the spinal support point to shift, making it difficult to provide continuous and stable support, thus affecting riding comfort. Utility Model Content

[0003] In view of this, this application aims to propose a seat structure that can make the seat in a zero-gravity posture simply by adjusting the seat cushion, which has a simple structure and can provide good riding comfort.

[0004] To achieve the above objectives, the technical solution of this application is implemented as follows: A seat structure includes a base, a seat cushion disposed on the base via a linkage assembly, and a first drive unit disposed on the base and pulsatorically connected to the seat cushion via a rack unit; The first drive unit can drive the seat cushion forward through the rack unit and lift the front end of the seat cushion under the traction of the linkage assembly.

[0005] Furthermore, the first drive unit is capable of outputting rotational power, and the rack unit includes a drive gear disposed on the power output end of the first drive unit, and a rack disposed on the seat cushion. The rack is arranged along the front-to-back direction of the seat cushion and has a downward convex arc shape.

[0006] Furthermore, the linkage assembly includes a first linkage with one end hinged to the front end of the seat cushion, and a second linkage with one end hinged to the rear end of the seat cushion. The base is provided with a first sliding groove and a second sliding groove at its front and rear ends, respectively. The other end of the first connecting rod is slidably disposed in the first sliding groove, and the other end of the second connecting rod is slidably disposed in the second sliding groove.

[0007] Furthermore, both the first and second slide grooves are elongated grooves extending along the front-rear direction of the seat cushion. The length of the first groove is greater than the length of the second groove.

[0008] Furthermore, the seat cushion is provided with downwardly extending mounting plates at both the front and rear ends; The front and rear ends of the rack are respectively connected to the mounting plates at the corresponding ends, and the first connecting rod and the second connecting rod are respectively hinged to the mounting plates at the corresponding ends.

[0009] Furthermore, there are two first connecting rods arranged opposite each other, and a first linkage rod is provided between the two first connecting rods. The first connecting rods are hinged to the mounting plate at the front end through the first linkage rod; and / or, The second link consists of two oppositely arranged links, and a second linkage is provided between the two second links. The second link is hinged to the mounting plate at the rear end through the second linkage.

[0010] Furthermore, there are two first drive units arranged opposite each other on the left and right, and each first drive unit has a drive gear at its power output end; The rack consists of two racks, each corresponding to one of the two drive gears.

[0011] Furthermore, the base includes a first seat body, a second seat body rotatably disposed on the first seat body, and a second drive unit disposed on the first seat body; The second drive unit is used to drive the second seat to rotate, and both the seat cushion and the first drive unit are disposed on the second seat.

[0012] Furthermore, the second drive unit is capable of outputting rotational power, and a drive gear is provided at the power output end of the second drive unit; The second base is provided with a driven gear, which meshes with the driving gear.

[0013] Compared with related technologies, this application has the following advantages: (1) The seat structure described in this application, by setting a rack unit and a linkage assembly, can achieve the composite motion of the seat cushion sliding forward and the front end lifting by a single drive source through the coordinated action of the first drive unit and the rack unit and the linkage assembly. It does not require an additional drive source for the backrest, and can achieve a stable switching from the designed position to the zero-gravity posture. The structure is simple.

[0014] In addition, the combined movement of the seat cushion lifting and sliding forward can better conform to the curves of the human hips and legs. At the same time, the linkage assembly provides stable support for the seat cushion, which can continuously provide even support for the human body during adjustment, thus enhancing the comfort of the seat.

[0015] (2) By including an arc-shaped rack in the rack unit, when the drive gear meshes with the arc-shaped rack, the rack can naturally guide the seat cushion to move forward while generating a front-end lifting posture change, without the need for additional complex trajectory constraint mechanisms. At the same time, the arc-shaped rack structure is simple and easy to integrate directly into the bottom of the seat cushion, forming a compact meshing transmission with the drive gear, which can reduce the space occupied inside the seat.

[0016] (3) By including a first link and a second link connecting the front and rear ends of the seat cushion respectively, and defining the sliding path by the first and second sliding grooves on the base, when the first drive unit drives the seat cushion to move through the rack unit, the sliding trajectory of the two links is defined by the sliding grooves. This guides the seat cushion to slide forward while simultaneously raising the front end and lowering the rear end to form an ergonomic posture change, thereby improving riding comfort. In addition, the first link and the second link can respectively bear the load of the front and rear ends of the seat cushion, which helps to avoid component deformation caused by excessive force at a single point.

[0017] (4) The length of the first slide groove is greater than the length of the second slide groove. When the first drive unit drives the seat cushion to move through the rack unit, the first link connecting the front end can slide forward a greater distance in the longer first slide groove, while driving the front end of the seat cushion to rise. The second link connecting the rear end only slides forward slightly in the shorter second slide groove, which can effectively prevent the rear end from being excessively raised or deviated.

[0018] (5) The design of the mounting plate extending downwards provides ample installation space for the curved rack. The downward protruding part of the curved rack can avoid the seat cushion through the vertical height of the mounting plate, which helps to prevent the rack from colliding with the seat cushion, thus facilitating the installation of the rack on the seat cushion.

[0019] (6) By setting two opposing first links, the force on the front mounting plate can be evenly distributed to the first groove of the base, avoiding the mounting plate tilting due to unilateral force on a single first link, thus improving riding safety. Similarly, by setting two opposing second links, the rear mounting plate can be prevented from tilting due to unilateral force on a single second link, thus improving riding safety.

[0020] (7) By using two symmetrically arranged first drive units that mesh with the rack and pinion through their respective drive gears, the force shift or tilt of the seat caused by unilateral drive can be effectively avoided, which can improve the stability and smoothness of the adjustment process. At the same time, it can also distribute the load of a single first drive unit, allowing the seat to bear a greater weight of the human body. Compared with a single drive structure, this design can reduce the wear of the gear and rack tooth surfaces and extend the service life of the transmission components.

[0021] (8) By making the base include a first seat body and a second seat body rotatably mounted on the first seat body, the overall angle of the seat can be switched according to usage needs, which can further improve the seating flexibility and comfort of the seat structure. Moreover, the first drive unit and the second drive unit can be independent, without the need for a complex linkage control mechanism, which simplifies the overall structure.

[0022] (9) The gear meshing transmission method can better control the rotation angle of the second seat relative to the first seat, and can effectively avoid problems such as slippage and lag during the adjustment process. At the same time, the rigid contact of the gear meshing can withstand a large load, which helps to ensure that the second seat maintains stable rotation when driving the weight of the seat cushion and the human body, which can reduce shaking or abnormal noise and improve the reliability of posture adjustment.

[0023] Another object of this application is to provide a vehicle having the seat structure described above.

[0024] The vehicle described in this application, by setting the seat structure as described above, can have better riding comfort and improve the riding experience. Attached Figure Description

[0025] 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 seat structure described in the embodiments of this application; Figure 2 This is a partial structural diagram of the seat structure described in the embodiments of this application under zero gravity conditions; Figure 3 This is an exploded view of a partial structure of the seat structure described in the embodiment of this application; Figure 4 This is a partial structural diagram of the seat structure described in the embodiments of this application; Figure 5 This is a partial structural diagram of the seat structure described in the embodiments of this application; Figure 6 This is a schematic diagram of the structure of the base described in the embodiments of this application; Figure 7 This is an exploded view of the base described in the embodiments of this application; Figure 8 This is a schematic diagram of the structure of the first seat body described in the embodiments of this application; Figure 9 This is an assembly diagram of the first base and the second motor as described in the embodiments of this application; Figure 10 This is a schematic diagram of the structure of the second seat body described in the embodiments of this application; Figure 11 This is an assembly drawing of the first base and the driven gear as described in the embodiments of this application; Figure 12 This is an assembly diagram of the first motor and rack described in an embodiment of this application; Figure 13 This is an exploded view of the first motor, rack, and mounting bracket described in the embodiments of this application; Figure 14 This is an assembly diagram of the rack and mounting bracket described in the embodiments of this application; Figure 15 This is an assembly diagram of the rack and mounting bracket described in an embodiment of this application from another perspective; Figure 16 This is a diagram showing the installation structure of the first link as described in an embodiment of this application; Figure 17 This is a diagram showing the installation structure of the second link as described in an embodiment of this application.

[0026] Explanation of reference numerals in the attached figures: 1. Base; 2. Seat cushion; 3. First connecting rod; 4. Second connecting rod; 5. First motor; 6. Rack; 7. Front linkage tube; 8. Rear linkage tube; 9. Second linkage rod; 10. First linkage rod; 11. Mounting plate; 12. Second motor; 13. Drive gear; 14. Mounting bracket; 15. Drive gear; 101. First seat; 1011. Longitudinal beam; 1012. Crossbeam; 1013. Annular plate; 1014. Bearing plate; 1015. Reinforcing plate; 102. Second base; 1021. Fixing plate; 1022. Horizontal plate; 1023. First connecting plate; 10231. First slide groove; 1024. Second connecting plate; 10241. Second slide groove; 1025. Connecting frame; 1026. Driven gear; 1401, First frame; 14011, Connecting hole; 1402, Second frame; 14021, Through hole. Detailed Implementation

[0027] 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.

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] An embodiment of the first aspect of this application provides a seat structure that allows the seat to be in a zero-gravity posture simply by adjusting the seat cushion 2. The structure is simple and provides good riding comfort.

[0034] In the field of seating, zero-gravity posture, which can simulate the natural state of the human body in a zero-gravity environment, effectively disperses body pressure and reduces spinal load, has become an important design direction for improving seat comfort. In related technologies, the realization of zero-gravity posture generally relies on the coordinated adjustment of the backrest and seat cushion 2. This is either achieved by adjusting the backrest angle and seat cushion 2 posture separately through independent drive structures, or by controlling the motion parameters of both through a control module to achieve a preset zero-gravity posture.

[0035] However, relying on the dual adjustment mode of the backrest and seat cushion 2 requires at least two drive components (such as motors) in conjunction with complex linkages and rotation mechanisms to control the backrest angle and seat cushion 2 position respectively. This results in a complex overall structure, which not only increases manufacturing costs but also makes the structure prone to instability due to errors in the linkage of multiple components, such as stuttering, shaking, or abnormal noises during adjustment. In addition, the rotation of the backrest may cause the spinal support point to shift, making it difficult to form continuous and stable support, thus affecting riding comfort.

[0036] In view of this, in order to overcome the shortcomings of related technologies, the seat structure of this embodiment combines... Figures 1 to 5 As shown, the overall design includes a base 1, a seat cushion 2 mounted on the base 1 via a linkage assembly, and a first drive unit mounted on the base 1 and connected to the seat cushion 2 via a rack unit. The first drive unit can drive the seat cushion 2 forward via the rack unit and raise the front end of the seat cushion 2 under the traction of the linkage assembly.

[0037] Therefore, by setting up a rack and pinion unit and a linkage assembly, the combined movement of the seat cushion 2 sliding forward and lifting the front end can be achieved with only a single drive source through the coordinated action of the first drive unit and the rack and pinion unit and the linkage assembly. No additional drive source for the backrest is required, thus achieving a stable transition from the designed position to a zero-gravity posture. Compared to the complex adjustment structures of existing technologies that rely on multiple motors and linkages, this structure significantly simplifies the overall construction, reduces the risks arising from the linkage of multiple components, and improves the structural stability of the seat during adjustment and use.

[0038] Furthermore, the combined movement of the seat cushion 2's front end lifting and forward sliding better conforms to the curves of the human hips and legs. Simultaneously, the stable support provided by the linkage assembly to the seat cushion 2 continuously provides even support to the body during adjustment, enhancing the seat's comfort. Moreover, the rack and pinion unit's transmission method features high transmission precision and stable power delivery. Combined with the rigid support of the linkage assembly, it effectively reduces problems such as jamming and abnormal noises that are common in non-traditional rotary drive mechanisms.

[0039] Based on the above overview, specifically, refer to Figures 1 to 3 As shown, the overall structure of the seat structure in this embodiment is the same as that in the prior art, and the backrest structure and the connection structure between the backrest and the seat cushion 2 can be referred to the conventional settings of vehicle seats in the related art, and will not be described again here.

[0040] Furthermore, the seat structure in this embodiment can serve as a front seat, mounted on a slide rail on the vehicle floor to adjust its fore-and-aft position. In this case, the slide rail can directly utilize a conventional slide rail structure found in existing vehicles. Alternatively, the seat in this embodiment can also serve as a rear seat, directly mounted on the vehicle floor.

[0041] To further improve the seating comfort of the seat structure in this embodiment, the following combination is continued... Figures 1 to 9 As shown, in some exemplary embodiments, the base 1 includes a first seat 101, a second seat 102 rotatably disposed on the first seat 101, and a second drive unit disposed on the first seat 101. The second drive unit is used to drive the second seat 102 to rotate, and both the cushion 2 and the first drive unit are disposed on the second seat 102.

[0042] Here, by including a first seat body 101 and a second seat body 102 rotatably mounted on the first seat body 101 in the base 1, the overall angle of the seat can be switched according to usage needs, further improving the seating flexibility and comfort of the seat structure. Moreover, the first and second drive units can operate independently, eliminating the need for complex linkage control mechanisms. This simplifies the overall structure, reduces the risk of malfunctions caused by interference from multiple components, and also helps ensure a smooth and reliable adjustment process, thereby improving the structural stability and service life of the seat.

[0043] In specific implementation, it can be combined with Figures 6 to 9 As shown, the first seat 101 specifically includes two longitudinal beams 1011 spaced apart, two transverse beams 1012 connected between the two longitudinal beams 1011, an annular plate 1013 disposed between the two transverse beams 1012, and a support plate 1014 disposed on the annular plate 1013. This structure of the first seat 101 not only provides good structural strength and better support for the seat cushion 2 and backrest, thus improving seating stability, but also facilitates manufacturing and overall lightweight design.

[0044] The structure of the second seat 102 is as follows: Figure 10 and Figure 11 As shown, it includes a fixed plate 1021 conforming to the annular plate 1013, a connecting frame 1025 located at the bottom of the fixed plate 1021 and protruding downward in the middle, and a horizontal plate 1022 located at the top of the fixed plate 1021 along the left-right direction of the seat cushion 2. The connecting frame 1025 is rotatably mounted on the first seat body 101, and two horizontal plates 1022 are spaced apart along the front-rear direction of the seat cushion 2. Furthermore, first connecting plates 1023 are respectively provided at the left and right ends of the front horizontal plate 1022, and second connecting plates 1024 are respectively provided at the left and right ends of the rear horizontal plate 1022. The aforementioned linkage assembly is specifically provided on the first connecting plate 1023 and the second connecting plate 1024.

[0045] It should be noted that, in addition to the structure described above, the first seat body 101 and the second seat body 102 of the base 1 can also adopt other structures, as long as they can enable the installation of the seat cushion 2.

[0046] In some exemplary embodiments, the second drive unit is capable of outputting rotational power, and a drive gear 13 is provided at the power output end of the second drive unit. At the same time, a driven gear 1026 is provided on the second base 102, and the driven gear 1026 meshes with the drive gear 13.

[0047] Here, a gear-driven transmission method is adopted. Compared with traditional linkage drive or belt drive, it has the characteristics of constant transmission ratio and direct power transmission. It can better control the rotation angle of the second seat 102 relative to the first seat 101, and effectively avoid problems such as slippage and lag during the adjustment process. At the same time, the rigid contact of the gear mesh can withstand a large load, which helps to ensure that the second seat 102 maintains stable rotation when driving the seat cushion 2 and the weight of the human body, reducing shaking or abnormal noise and improving the reliability of posture adjustment.

[0048] In addition, the drive gear 13 is directly located at the power output end of the second drive unit, and the driven gear 1026 is integrated into the bottom of the second base 102 and rotates with the first base 101. The two can achieve power transmission through meshing, without the need for additional complex intermediate transmission components, which can reduce the number of parts and simplify the overall structure.

[0049] Meanwhile, because the gear meshing has a reverse self-locking capability, when the second drive unit stops working, the mutual constraint between the tooth surfaces keeps the second seat 102 stably maintained at the current rotation angle, effectively preventing accidental rotation caused by load gravity and improving the safety of the seat in zero-gravity and other postures. In addition, the uniform speed of the gear transmission also makes the rotation process of the second seat 102 smoother, reducing the impact on the human body when changing postures and further improving riding comfort.

[0050] In specific implementation, you can refer to Figures 8 to 11 As shown in the figure, the second driving part in this embodiment is specifically a second motor 12 located at the bottom of the support plate 1014, and a through hole is provided on the support plate 1014 for the drive shaft of the second motor 12 to pass through, and the driving gear 13 is specifically located on the drive shaft.

[0051] And such Figure 10 and Figure 11As shown, to facilitate the placement of the driven gear 1026 on the second base 102 and its meshing with the driving gear 13, the connecting frame 1025 of the second base 102 has a downwardly protruding portion in the middle. In this embodiment, the driven gear 1026 is specifically disposed on this protruding portion. At the same time, the provision of this protruding portion can also improve the installation strength of the connecting frame 1025, thereby improving the installation stability of the driven gear 1026.

[0052] In addition, in order to improve the installation strength of the second motor 12, such as Figure 8 As shown, a reinforcing plate 1015 is provided on the top of the support plate 1014, covering the top of the drive gear 13. The second motor 12 is screwed onto the support plate 1014 via a threaded assembly passing through the support plate 1014 and the reinforcing plate 1015, and the drive shaft of the second motor 12 passes through the reinforcing plate 1015.

[0053] This configuration provides better support for the drive shaft of the second motor 12, thereby improving the smoothness of the drive shaft's rotation. This, in turn, improves the force transmission stability between the driving gear 13 and the driven gear, i.e., between the second seat 102 and the first seat 101, and effectively prevents jamming and abnormal noises during the rotation of the seat cushion 2.

[0054] It should be noted that, in addition to setting up a driving gear 13 and a driven gear 1026, and achieving the rotational drive of the second drive unit on the second base 102 through the meshing between the two, the drive shaft of the second drive unit can also be directly connected to the second base 102, and the second drive unit can directly drive the second base 102 to rotate. However, in this case, since there is no gear unit for speed reduction and torque amplification, the second drive unit will have a larger torque requirement, which is not conducive to cost reduction and is also inconvenient to arrange.

[0055] In some exemplary embodiments, the first drive unit is capable of outputting rotational power. The rack unit includes a drive gear 15 disposed on the power output end of the first drive unit and a rack 6 disposed on the seat cushion 2. The rack 6 is arranged along the front-rear direction of the seat cushion 2 and has a downwardly convex arc shape. By making the rack unit include an arc-shaped rack 6, when the drive gear 15 meshes with the arc-shaped rack 6, the rack 6 can naturally guide the seat cushion 2 to move forward while generating a front-end lifting posture change, without the need for additional complex trajectory constraint mechanisms.

[0056] Furthermore, during the meshing process between the arc-shaped rack 6 and the drive gear 15, a stable meshing depth can be maintained when the seat cushion 2 is raised or the load changes, reducing stress concentration on the tooth surface and enhancing the overall structural reliability. At the same time, the arc-shaped rack 6 has a simple structure, making it easy to integrate directly into the bottom of the seat cushion 2, forming a compact meshing transmission with the drive gear 15. This reduces the space occupied inside the seat, leaving more room for the arrangement of other components such as the base 1 and connecting rod assembly, thus contributing to the overall lightweight design of the seat.

[0057] In some exemplary embodiments, there are two first drive units arranged opposite each other on the left and right sides. Each first drive unit has a drive gear 15 at its power output end, and there are two racks 6 arranged in a one-to-one correspondence with the two drive gears 15. This arrangement allows for balanced power output from both sides of the seat cushion 2, effectively preventing force shift or tilting of the seat cushion 2 caused by unilateral drive. At the same time, it can also counteract the lateral torque generated during adjustment, which helps to reduce jerking, abnormal noise, or structural deformation caused by uneven force, and improves the stability and smoothness of the adjustment process.

[0058] Furthermore, the combination of two first drive units and two racks 6 can distribute the load of a single first drive unit, allowing the seat cushion 2 to withstand a greater human body weight. Compared to a single drive structure, this design can reduce wear on the tooth surfaces of the gears and racks 6, and extend the service life of the transmission components.

[0059] In specific implementation, it can be as follows: Figure 4 , Figure 5 and Figure 12 , Figure 13 As shown, the first drive unit is a first motor 5 mounted on a fixing plate 1021 on the first base 101, and the first motor 5 is mounted on the fixing plate 1021 via a mounting bracket 14. In conjunction with... Figure 14 and Figure 15 As shown, the mounting bracket 14 includes a first frame 1401 and a second frame 1402 that form a channel. The bottom of the first frame 1401 is provided with a flange, which is used to fix it to the first base 101 of the base 1. The first frame 1401 is provided with a connecting hole 14011 that communicates with the channel.

[0060] The rack 6 passes through the connecting hole 14011 and is installed in the channel, allowing it to slide within the channel to drive the rack 6. The second frame 1402 is fixed to the first frame 1401 and has a through hole 14021 for the drive gear 15 to pass through. The drive gear 15 passes through the through hole 14021 and meshes with the rack 6 in the channel, thereby driving the rack 6. In addition, the second frame 1402 also has three mounting holes around the through hole 14021. The first motor 5 is fixed to these mounting holes with bolts, thus fixing the first motor 5 to the base 1.

[0061] It should be noted that the structure of the mounting bracket 14 is not limited to that shown in the figure, as long as it can realize the installation of the first motor 5 and its fixation on the base 1.

[0062] In some exemplary embodiments, the linkage assembly includes a first linkage 3 with one end hinged to the front end of the seat cushion 2, and a second linkage 4 with one end hinged to the rear end of the seat cushion 2. Furthermore, the base 1 has a first sliding groove 10231 and a second sliding groove 10241 at its front and rear ends, respectively. The other end of the first linkage 3 is slidably disposed within the first sliding groove 10231, and the other end of the second linkage 4 is slidably disposed within the second sliding groove 10241.

[0063] At this point, by connecting the first link 3 and the second link 4 to the front and rear ends of the seat cushion 2 respectively, and defining the sliding path by the first groove 10231 and the second groove 10241 on the base 1, when the first drive unit drives the seat cushion 2 to move through the rack unit, the sliding trajectory of the two links is defined by the grooves. This guides the seat cushion 2 to slide forward while simultaneously raising the front end and lowering the rear end to form an ergonomic posture change, thus improving riding comfort. Furthermore, the first link 3 and the second link 4 can respectively bear the load of the front and rear ends of the seat cushion 2, helping to avoid component deformation caused by excessive force at a single point. Moreover, this structure is simple and easy to manufacture.

[0064] In some exemplary embodiments, both the first groove 10231 and the second groove 10241 are elongated grooves extending along the front-rear direction of the seat cushion 2, and the length of the first groove 10231 is greater than the length of the second groove 10241. With this design, when the first drive unit drives the seat cushion 2 to move via the rack and pinion unit, the first connecting rod 3 connected to the front end can slide forward a greater distance within the longer first groove 10231, simultaneously lifting the front end of the seat cushion 2.

[0065] Meanwhile, the second link 4 connecting the rear end only slides forward slightly within the shorter second slide groove 10241, effectively preventing excessive lifting or offset of the rear end. Thus, without the need for additional complex trajectory control mechanisms, the seat cushion 2 can naturally form a motion trajectory with a large sliding and lifting at the front end and a small follow-up movement at the rear end through the constraints of the mechanical structure itself, which can better meet the posture requirements when transitioning from a normal sitting posture to a zero-gravity posture.

[0066] In specific implementation, it can be as follows: Figures 1 to 5 As shown, similar to existing technology, the seat cushion 2 in this embodiment also has a front linkage tube 7 and a rear linkage tube 8 located at its front and rear ends on its frame. These front linkage tubes 7 and rear linkage tubes 8 are connected to the side plate supports on both sides of the frame. Furthermore, the top end of the first connecting rod 3 in this embodiment is hinged to the front linkage tube 7, while the top end of the second connecting rod 4 is hinged to the rear linkage tube 8. Figure 16 and Figure 17 As shown, the first slide groove 10231 is provided on the first connecting plate 1023 at the top of the second seat 102, while the second slide groove 10241 is provided on the second connecting plate 1024 at the top of the second seat 102.

[0067] Furthermore, to improve the sliding stability of the first connecting rod 3 and the second connecting rod 4, both the first connecting plate 1023 and the second connecting plate 1024 are L-shaped to provide better structural strength and facilitate installation on the second base 102. Additionally, the bottom end of the first connecting rod 3 is provided with a first connecting shaft, through which it slides within the first sliding groove 10231. The bottom end of the second connecting rod 4 is provided with a second connecting shaft, through which it slides within the second sliding groove 10241.

[0068] In addition, combined Figure 16 and Figure 17 As shown, the length of the first link 3 is greater than the length of the second link 4. Therefore, when the first motor 5 drives the gear to rotate, the seat cushion 2 can be driven to slide forward through the rack 6. Under the traction of the first link 3 and the second link 4, the front end of the seat cushion 2 is raised and the rear end moves forward.

[0069] In some exemplary embodiments, the front and rear ends of the seat cushion 2 are respectively provided with downwardly extending mounting plates 11, and the front and rear ends of the rack 6 are respectively connected to the corresponding mounting plates 11. The first connecting rod 3 and the second connecting rod 4 are respectively hinged to the corresponding mounting plates 11. This design allows the downward extension of the mounting plates 11 to provide sufficient installation space for the arc-shaped rack 6. The downwardly protruding part of the arc-shaped rack 6 can avoid collision with the seat cushion 2 through the vertical height of the mounting plates 11, thereby facilitating the installation of the rack 6 on the seat cushion 2.

[0070] In specific implementation, you can refer to Figure 5 and Figure 7 As shown, the mounting plates 11 at both ends are fixed to the front linkage tube 7 at the front end and the rear linkage tube 8 at the rear end of the seat cushion 2, respectively, so that each mounting plate 11 is roughly arc-shaped and extends towards the middle of the seat cushion 2 to install the arc-shaped rack 6. It can be understood that, in addition to setting the mounting plates 11, the arc-shaped rack 6 can also be directly installed between the front linkage tube 7 and the rear linkage tube 8 at both ends, or the arc-shaped rack 6 can be installed on other parts of the seat cushion 2 frame.

[0071] In some exemplary embodiments, there are two first connecting rods 3 arranged opposite each other, and a first linkage rod 10 is provided between the two first connecting rods 3. The first connecting rods 3 are hinged to the front mounting plate 11 through the first linkage rod 10. Here, by setting two oppositely arranged first connecting rods 3, the force on the front mounting plate 11 can be evenly distributed to the first connecting plate 1023 of the base 1, avoiding the mounting plate 11 from tilting due to unilateral force on a single first connecting rod 3, thereby preventing the left and right height difference at the front of the cushion 2.

[0072] At the same time, the first linkage rod 10 can rigidly connect the two first linkage rods 3 into a whole, so that the force on the two linkage rods is synchronized in real time. Even if the passenger applies pressure to the first linkage rod 10 on one side of the front end of the seat cushion 2, the force can be quickly transmitted, which can effectively prevent the first linkage rod 3 on one side from being overloaded and deformed. This helps to ensure that the front end of the seat cushion 2 always maintains a horizontal and stable support state, which can improve riding safety.

[0073] In some exemplary embodiments, there are two opposing second links 4, with a second linkage 9 between them. The second links 4 are hinged to the rear mounting plate 11 via the second linkage 9. The arrangement of two opposing second links 4 not only evenly distributes the force on the rear mounting plate 11 to the second connecting plate 1024 of the base 1, preventing the mounting plate 11 from tilting due to unilateral force on a single second link 4, but also prevents a left-right height difference at the front end of the seat cushion 2.

[0074] Meanwhile, the second linkage 9 can synchronize the force on the two linkages in real time. Even if the passenger applies pressure to one side of the rear end of the seat cushion 2, it can effectively prevent the second linkage 4 on one side from being overloaded and deformed. This helps to ensure that the rear end of the seat cushion 2 always maintains a horizontal and stable support state, which can improve riding safety.

[0075] In specific implementation, it can be as follows: Figure 16 and Figure 17 As shown, each of the first connecting rods 3 is welded to the first linkage rod 10, and the first linkage rod 10 is rotatably mounted on the front mounting plate 11. At the same time, each of the second connecting rods 4 is welded to the second linkage rod 9, and the second linkage rod 9 is rotatably mounted on the rear mounting plate 11.

[0076] It should be noted that, in specific implementations, the first linkage 10 and the second linkage 9 may be omitted, and the first linkage 3 may be directly rotatably mounted on the front mounting plate 11 or the front linkage pipe 7. Alternatively, the second linkage 4 may be directly rotatably mounted on the rear mounting plate 11 or the rear linkage pipe 8.

[0077] It is worth noting that, regarding the seat 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 17 As shown, it may include, for example, a base 1, a seat cushion 2 mounted on the base 1 via a linkage assembly, and a first drive unit mounted on the base 1 and connected to the seat cushion 2 via a rack unit. The first drive unit can drive the seat cushion 2 to slide forward via the rack unit and lift the front end of the seat cushion 2 under the traction of the linkage assembly.

[0078] The first drive unit is a first motor 5 capable of outputting rotational power. The rack unit includes a drive gear 15 located on the power output end of the first drive unit and a rack 6 located on the seat cushion 2. The linkage assembly includes a first link 3 with one end hinged to the front end of the seat cushion 2 and a second link 4 with one end hinged to the rear end of the seat cushion 2. The base 1 includes a first seat body 101, a second seat body 102 rotatably disposed on the first seat body 101, and a second drive unit disposed on the first seat body 101. The second drive unit is used to drive the second seat body 102 to rotate. The cushion 2 and the first drive unit are both disposed on the second seat body 102.

[0079] The second drive unit is a second motor 12 capable of outputting rotational power, and a drive gear 13 is provided at the power output end of the second motor 12. At the same time, a driven gear is provided at the bottom of the second base 102. The second base 102 is rotatably mounted on the first base 101 through the driven gear, and the driven gear meshes with the drive gear 13.

[0080] In the preferred embodiment of the above seat structure, the specific configuration and arrangement of the rack 6, the first link 3, and the second link 4 can still be referred to the descriptions in the above exemplary embodiments. Furthermore, in this preferred embodiment, the rack 6, the first link 3, and the second link 4, based on the beneficial effects brought about by their design, can also be referred to the descriptions in the above exemplary embodiments.

[0081] The seat structure in this embodiment adopts the design described above. When the user needs to use the zero-gravity function, the seat control command is activated to make the first motor 5 rotate forward. The first motor 5 outputs power to drive the rack 6 forward, and the rack 6 then drives the first link 3 and the second link 4 to rotate clockwise and slide forward simultaneously. Finally, the seat switches to a zero-gravity posture to meet the user's relaxation needs.

[0082] Therefore, the seat structure in this embodiment, by adopting the above structure, eliminates the need to adjust the backrest angle; the seat cushion 2 can achieve a zero-gravity posture simply by driving the first motor 5. Furthermore, the curved rack 6 can drive the rotation, creating an egg-shaped cabin environment that enhances comfort. Simultaneously, the seat cushion 2 can rotate, further improving seating flexibility and comfort.

[0083] An embodiment of the second aspect of this application provides a vehicle having the seat structure of the embodiment of the first aspect.

[0084] The vehicle in this embodiment, by setting the seat structure as described above, can have better riding comfort and improve the riding experience.

[0085] 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 structure, characterized in that: It includes a base (1), a seat cushion (2) disposed on the base (1) via a linkage assembly, and a first drive unit disposed on the base (1) and connected to the seat cushion (2) via a rack unit; The first drive unit can drive the seat cushion (2) forward through the rack unit and lift the front end of the seat cushion (2) under the traction of the linkage assembly.

2. The seat structure according to claim 1, characterized in that: The first drive unit is capable of outputting rotational power, and the rack unit includes a drive gear (15) disposed on the power output end of the first drive unit, and a rack (6) disposed on the seat cushion (2). The rack (6) is arranged along the front-back direction of the cushion (2) and is in a downward convex arc shape.

3. The seat structure according to claim 2, characterized in that: The linkage assembly includes a first link (3) with one end hinged to the front end of the seat cushion (2) and a second link (4) with one end hinged to the rear end of the seat cushion (2). The base (1) has a first groove (10231) and a second groove (10241) at its front and rear ends respectively. The other end of the first connecting rod (3) is slidably disposed in the first groove (10231), and the other end of the second connecting rod (4) is slidably disposed in the second groove (10241).

4. The seat structure according to claim 3, characterized in that: The first groove (10231) and the second groove (10241) are both elongated grooves extending along the front-back direction of the cushion (2); The length of the first groove (10231) is greater than the length of the second groove (10241).

5. The seat structure according to claim 3, characterized in that: The seat cushion (2) is provided with downwardly extending mounting plates (11) at both the front and rear ends. The front and rear ends of the rack (6) are respectively connected to the mounting plate (11) at the corresponding ends, and the first connecting rod (3) and the second connecting rod (4) are respectively hinged to the mounting plate (11) at the corresponding ends.

6. The seat structure according to claim 5, characterized in that: The first connecting rods (3) are two oppositely arranged, and a first linkage rod (10) is provided between the two first connecting rods (3). The first connecting rods (3) are hinged to the mounting plate (11) at the front end through the first linkage rod (10); and / or, The second link (4) consists of two oppositely arranged links, and a second linkage (9) is provided between the two links (4). The second link (4) is hinged to the mounting plate (11) at the rear end through the second linkage (9).

7. The seat structure according to claim 2, characterized in that: The first drive unit consists of two units arranged opposite each other on the left and right, and each first drive unit has a drive gear (15) at its power output end. The rack (6) consists of two racks that correspond one-to-one with the two drive gears (15).

8. The seat structure according to any one of claims 1 to 7, characterized in that: The base (1) includes a first base (101), a second base (102) rotatably disposed on the first base (101), and a second drive unit disposed on the first base (101); The second drive unit is used to drive the second seat (102) to rotate, and the seat cushion (2) and the first drive unit are both provided on the second seat (102).

9. The seat structure according to claim 8, characterized in that: The second drive unit is capable of outputting rotational power, and a drive gear (13) is provided at the power output end of the second drive unit. The second seat (102) is provided with a driven gear (1026), which meshes with the driving gear (13).

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

Images