A seat cushion, a seat, and a vehicle

Abstract

The application belongs to the technical field of vehicle seats, and discloses a seat cushion, a seat and a vehicle, wherein the seat cushion comprises a seat cushion framework and a lifting mechanism, the lifting mechanism comprises a lifting piece, a transmission piece and a driving piece, the transmission piece is located in the interior of the seat cushion framework, the transmission piece has a hinged end hinged to the seat cushion framework and a matching end opposite to the hinged end, the driving piece is arranged on the seat cushion framework and is in transmission connection with the matching end so as to drive the lifting piece to rotate, the lifting piece has a lifting section and a connecting section, the lifting section is arranged along the rotation axis of the transmission piece, and the two ends of the connecting section are fixedly connected to the lifting section and the hinged end respectively, thereby the length of the transmission piece can be reduced, the moment generated when the transmission piece is stressed is reduced, the risk that the transmission piece is easily deformed is reduced, and the quality stability of the seat cushion is ensured.

Description

Technical Field

[0001] This application belongs to the technical field of vehicle seats, specifically relating to a seat cushion, a seat, and a vehicle. Background Technology

[0002] An automobile is a non-rail-mounted vehicle with multiple wheels and powered by a power unit. It is primarily used for transporting people and goods and is one of the most important modes of transportation in modern society. Seats are an important component of the automobile interior, primarily providing passengers with a comfortable and safe seating space.

[0003] Currently, most seats have reclining backrests that allow passengers to lie down and rest. However, because there is a height difference between the back of the seat cushion and the backrest when the backrest is reclined, passengers lack lumbar support, which can easily cause lower back discomfort and affect their reclining experience.

[0004] To improve the passenger's reclining experience, some vehicle models incorporate a lifting mechanism within the seat frame. This mechanism elevates the seat cushion padding at the rear end, overcoming the height difference between the rear end of the seat cushion and the backrest when the backrest is folded down, thus enhancing the passenger's reclining comfort. Common lifting mechanisms include a lifting structure and a drive structure. The lifting structure is hinged to the seat cushion frame, while the drive structure is located within the seat cushion frame and connected to the lifting structure. This allows the drive structure to rotate the lifting structure around the hinge axis between the lifting structure and the seat cushion frame, enabling the lifting structure to push the seat cushion padding upwards, thereby lifting the rear end of the seat cushion.

[0005] Currently, drive structures are mainly divided into two types. One type is a combination of an electric lead screw and a drive arm. One end of the drive arm is connected to the slider of the electric lead screw, and the other end is hinged to the lifting structure. It can use the electric lead screw to drive the drive arm, so that the drive arm moves and drives the lifting structure to rotate. The other type is a combination of a drive component and a transmission plate. One end of the transmission plate is hinged to the seat cushion frame along its length, and the other end of the transmission plate is connected to the lifting structure. The drive component is driven to the middle of the transmission plate along its length. It can use the drive component to drive the transmission plate to rotate, so that the transmission plate drives the lifting structure to rotate. However, for the drive structure that is a combination of a drive component and a transmission plate, since one end of the transmission plate is hinged to the seat cushion frame, the other end of the transmission plate is connected to the lifting structure, and the drive component is driven to the middle of the transmission plate, the length of the transmission plate is relatively long. As a result, the transmission plate will generate a large torque when subjected to force, which makes the transmission plate prone to deformation, thus affecting the stability of the seat quality. Utility Model Content

[0006] This application provides a seat cushion to ensure the stability of the seat cushion's quality.

[0007] The technical solution adopted in this application is as follows: A seat cushion includes a seat cushion frame and a lifting mechanism. The lifting mechanism includes a lifting member, a transmission member, and a driving member. The transmission member is located inside the seat cushion frame and has a hinge end hinged to the seat cushion frame and a mating end opposite to the hinge end. The driving member is disposed in the seat cushion frame and is throttle-connected to the mating end to drive the lifting member to rotate. The lifting member is located inside the seat cushion frame and has a lifting section and a connecting section arranged at an angle to the lifting section. The lifting section extends along the rotation axis of the transmission member, and the two ends of the connecting section are respectively fixedly connected to the lifting section and the hinge end.

[0008] By adopting the above technical solution, when the seat pad filling at the rear end of the seat cushion is pushed upward, the driving component is activated. The driving component drives the mating end in the first direction, so that the transmission component rotates around the hinge point between itself and the seat cushion frame under the transmission action of the driving component and the mating end. Then, the transmission component drives the connecting section to rotate, and the connecting section drives the lifting section to rotate, so that the lifting section moves upward and pushes the seat pad filling at the rear end of the seat cushion upward, thereby lifting the rear end of the seat cushion.

[0009] When the seat cushion filling at the rear end of the seat cushion is lowered, the drive unit is activated. The drive unit drives the mating end in a second direction opposite to the first direction, so that the transmission unit rotates around the hinge point between itself and the seat cushion frame under the transmission action of the drive unit and the mating end. This causes the transmission unit to drive the connecting section to rotate, and the connecting section to drive the lifting section to rotate, so that the lifting section moves downward. Finally, the seat cushion filling moves downward under its own elasticity, thereby lowering the rear end of the seat cushion.

[0010] Because the hinge end and the mating end of the transmission component are arranged opposite each other, and the connecting section of the lifting component is connected to the hinge end, compared with the prior art where one end of the transmission plate is hinged to the seat cushion frame, the other end of the transmission plate is connected to the lifting structure, and the connection position between the driving component and the transmission plate is located in the middle of the length direction of the transmission plate, the technical solution in this application can reduce the length of the transmission component, thereby reducing the torque generated when the transmission component is subjected to force, so as to reduce the risk of deformation of the transmission component, thereby ensuring the quality stability of the seat cushion, ensuring the quality stability of the seat with the seat cushion of this application installed, and also ensuring the normal operation of the rear lifting function of the seat cushion and improving the load capacity of the lifting mechanism.

[0011] Optionally, the drive unit has an output shaft, the output shaft is provided with a gear, and the mating end is provided with teeth that mesh with the gear.

[0012] By adopting the above technical solution, when the seat pad filling at the rear end of the seat cushion is pushed upward, the drive unit is activated. The output shaft of the drive unit drives the gear to rotate in the first direction. The gear moves relative to the teeth at the mating end. Then, the teeth at the mating end drive the transmission unit to rotate. The transmission unit rotates around the hinge point between itself and the seat cushion frame, thereby causing the lifting section to rise and push the seat pad filling at the rear end of the seat cushion upward, so as to achieve the lifting of the rear end of the seat cushion.

[0013] When the seat cushion filling at the rear end of the seat cushion is lowered, the drive unit is activated. The output shaft of the drive unit drives the gear to rotate in a second direction opposite to the first direction. The gear moves relative to the teeth at the mating end, which in turn causes the teeth at the mating end to drive the transmission unit to rotate. The transmission unit rotates around the hinge point between itself and the seat cushion frame, thereby causing the lifting section to lower. The seat cushion filling at the rear end of the seat cushion moves downward under its own elasticity, thus achieving the lowering of the rear end of the seat cushion.

[0014] This application achieves the transmission connection between the driving component and the mating end by setting gears and teeth, thereby ensuring the transmission efficiency between the driving component and the mating end on the one hand, and simplifying the transmission connection method between the driving component and the mating end on the other hand. This facilitates the transmission connection between the driving component and the mating end and reduces the assembly difficulty of the lifting mechanism, thereby improving the assembly efficiency of the seat cushion.

[0015] Optionally, the drive unit is located outside the seat cushion frame, and the output shaft of the drive unit passes through the seat cushion frame, while the gear is located inside the seat cushion frame.

[0016] By adopting the above technical solution, since the driving component is located on the outside of the seat cushion frame, it can avoid the internal space of the seat cushion frame. This allows the seat cushion frame to have a large space inside after the lifting mechanism is installed, so that other functional components that need to be installed on the seat cushion frame can still be installed. This avoids the situation where other functional components that need to be installed on the seat cushion frame cannot be installed because the driving component is located inside the seat cushion frame, thus ensuring the versatility of the seat cushion's functions. Furthermore, since the output shaft of the driving component passes through the seat cushion frame and the gear is located inside the seat cushion frame, it is ensured that the gear can mesh with the teeth located at the mating end, so that the driving component can drive the transmission component to rotate, thereby ensuring the normal operation of the lifting mechanism.

[0017] Optionally, the lifting mechanism further includes a retainer located inside the seat cushion frame, the drive member having a screw passing through the seat cushion frame and the retainer, the screw being threadedly connected to a nut located on the side of the retainer opposite to the drive member, the output shaft of the drive member passing through the retainer, and the gear located on the side of the retainer facing the drive member.

[0018] By adopting the above technical solution, since the retainer is located inside the seat cushion frame, and the drive component has a screw passing through the seat cushion frame and the retainer, with the screw threadedly connected to a nut located on the side of the retainer away from the drive component, the drive component is fixedly connected to the seat cushion frame on one hand, and the retainer is used to strengthen the connection between the drive component and the seat cushion frame to ensure the connection stability between the drive component and the seat cushion frame on the other hand. Furthermore, since the output shaft of the drive component passes through the retainer, and the gear is located on the side of the retainer facing the drive component, the retainer can also be used to support the output shaft of the drive component to increase the stability of the drive component, while ensuring the stability of the gear, thus ensuring the meshing stability of the gear and teeth, thereby ensuring the transmission efficiency and transmission stability between the drive component and the transmission component.

[0019] Optionally, the transmission component is provided with a limiting groove, and multiple screws are provided at intervals, one of which is provided with a protective sleeve that passes through the limiting groove.

[0020] By adopting the above technical solution, the multiple screws spaced apart increase the number of connection points between the drive component and the seat cushion frame, thereby increasing the connection stability between the drive component and the seat cushion frame. Furthermore, since one of the screws is equipped with a threaded sleeve that passes through the limiting groove, the threaded sleeve can isolate the screw and the groove wall of the limiting groove, thus preventing the outer circumference of the screw from directly contacting the groove wall and causing damage to the screw thread. At the same time, it avoids the possibility that the screw thread directly contacting the groove wall of the limiting groove may guide the groove wall and cause the transmission component to jam, thereby ensuring the smoothness of the transmission component's rotation.

[0021] Optionally, the extension direction of the connecting segment is parallel to the direction from the hinge end to the mating end, and the lifting segment and the mating end are located on the same side of the hinge end.

[0022] By adopting the above technical solution, since the lifting section and the mating end are located on the same side of the hinge end, the internal space of the seat frame required by the lifting mechanism can be further reduced. This allows for more space to be reserved for other functional components that need to be installed inside the seat frame, and also facilitates the installation of other functional components that need to be installed inside the seat frame.

[0023] Optionally, the end of the connecting segment away from the lifting segment extends toward the side where the transmission member is located and is provided with an extension segment, which is fixedly connected to the hinge end; Alternatively, the connecting segment may include a first segment fixedly connected to the transmission member, a second segment parallel to the first segment, and an intermediate segment located between the first segment and the second segment. The second segment may be fixedly connected to the lifting segment, and the intermediate segment may be inclined in the direction away from the transmission member along the direction from the first segment to the second segment.

[0024] By adopting the above technical solution, since the end of the connecting section away from the lifting section extends towards the side where the transmission component is located, the extension section is fixedly connected to the hinge end, thereby increasing the distance between the connecting section and the transmission component, so that the connecting section and the mating end can avoid each other. On the one hand, it achieves the effect of facilitating the transmission connection between the driving component and the mating end, and on the other hand, it ensures the smoothness of the transmission component when rotating, so as to ensure the stable operation of the lifting mechanism.

[0025] Since the first section is fixedly connected to the transmission component, the second section is connected to the lifting section, and the middle section is inclined in the direction away from the transmission component along the direction from the first section to the second section, the distance between the second section and the transmission component is increased, so that the second section and the mating end can avoid each other. On the one hand, it can facilitate the transmission connection between the driving component and the mating end, and on the other hand, it can ensure the smoothness of the rotation of the transmission component, so as to ensure the stable operation of the lifting mechanism.

[0026] Optionally, the seat cushion frame is provided with a mounting plate, the mounting plate having an abutment portion that rests against the seat cushion frame, and the hinge end being hinged to the mounting plate.

[0027] By adopting the above technical solution, since the hinge end is hinged to the mounting plate, it facilitates the installation of the transmission component and avoids the possibility of interference between the transmission component and the side plate of the seat cushion frame, thus ensuring that the lifting mechanism can lift the seat cushion filling to the required height. Since the abutment part abuts against the seat cushion frame, it can be used to position the mounting plate, thus facilitating the fixing of the mounting plate. At the same time, the abutment part and the seat cushion frame can be used to support the mounting plate, thereby increasing the connection stability between the mounting plate and the seat cushion frame, and thus increasing the connection stability between the transmission component and the seat cushion frame.

[0028] This application also provides a seat to ensure the quality stability of the seat.

[0029] A chair, including a backrest and a seat cushion as described above.

[0030] By adopting the above technical solution, since the seat in this application uses the aforementioned seat cushion, the length of the transmission component can be reduced, thereby reducing the torque generated when the transmission component is subjected to force, thus reducing the risk of deformation of the transmission component and ensuring the quality stability of the seat.

[0031] This application also provides a vehicle to ensure vehicle quality stability and improve user experience.

[0032] A vehicle comprising a seat cushion or a seat as described above.

[0033] By adopting the above technical solution, since the vehicle in this application uses the aforementioned seat cushion or seat, the torque generated when the transmission component is subjected to force is reduced, thereby reducing the risk of easy deformation of the transmission component, thus ensuring the quality stability of the seat, and in turn ensuring the quality stability of the vehicle, and improving the user experience.

[0034] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows: 1. The seat cushion in this application includes a seat cushion frame and a lifting mechanism. The lifting mechanism includes a lifting member, a transmission member, and a driving member. The transmission member is located inside the seat cushion frame and has a hinge end hinged to the seat cushion frame and a mating end opposite to the hinge end. The driving member is located in the seat cushion frame and is connected to the mating end to drive the lifting member to rotate. The lifting member is located inside the seat cushion frame and has a lifting section and a connecting section set at an angle to the lifting section. The lifting section extends along the rotation axis of the transmission member. The two ends of the connecting section are fixedly connected to the lifting section and the hinge end, respectively. Compared with the prior art where one end of the transmission plate is hinged to the seat cushion frame, the other end of the transmission plate is connected to the lifting structure, and the connection position between the driving member and the transmission plate is located in the middle of the length direction of the transmission plate, the technical solution in this application can reduce the length of the transmission member, thereby reducing the torque generated when the transmission member is subjected to force, reducing the risk of deformation of the transmission member, and thus ensuring the quality stability of the seat cushion.

[0035] 2. The driving component in this application has an output shaft with a gear and a mating end with teeth that mesh with the gear. This ensures the transmission efficiency between the driving component and the mating end, simplifies the transmission connection between the driving component and the mating end, facilitates the transmission connection between the driving component and the mating end, reduces the assembly difficulty of the lifting mechanism, and improves the assembly efficiency of the seat cushion.

[0036] 3. In this application, the drive component is located on the outside of the seat cushion frame, thereby allowing the drive component to avoid conflict with the internal space of the seat cushion frame. This ensures that after the lifting mechanism is installed on the seat cushion frame, the interior of the seat cushion frame still has ample space for installing other functional components that need to be installed on the seat cushion frame. This avoids situations where the drive component's location inside the seat cushion frame prevents the installation of other functional components, thus ensuring the versatility of the seat cushion's functions. The output shaft of the drive component passes through the seat cushion frame, and the gear is located inside the seat cushion frame, ensuring that the gear can mesh with the teeth located at the mating end. This ensures that the drive component can drive the transmission component to rotate, thereby ensuring the normal operation of the lifting mechanism. Attached Figure Description

[0037] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a partial structural diagram of the seat cushion described in one embodiment of this application; Figure 2 This is a partial structural cross-sectional view of the seat cushion described in one embodiment of this application, mainly showing the lifting member in its initial position; Figure 3 This is a partial structural cross-sectional view of the seat cushion described in one embodiment of this application, mainly showing the lifting member in the lifted position; Figure 4 This is a partial top view of the structure of the seat cushion described in one embodiment of this application; Figure 5 This is a partial structural diagram of the seat cushion described in one embodiment of this application. The lifting component and the transmission component are not shown in the figure. Figure 6 for Figure 5 Enlarged view of part A in the middle; Figure 7 This is a schematic diagram of the lifting member and the transmission member in one embodiment of this application; Figure 8 This is a partial top view of the structure of the seat cushion described in another embodiment of this application; Figure 9 This is a schematic diagram of the lifting member and the transmission member in another embodiment of this application.

[0038] Figure label: 1. Seat cushion frame; 11. Side plate; 12. Front cross tube; 13. Suspension spring; 14. Mounting plate; 141. Alignment part; 142. Support part; 2. Lifting mechanism; 21. Lifting component; 211. Lifting section; 212. Connecting section; 213. Extension section; 214. First section; 215. Second section; 216. Middle section; 22. Transmission component; 221. Gear; 222. Limiting groove; 223. Fixed bracket; 23. Driving component; 231. Gear; 232. Protective sleeve; 24. Cage. Detailed Implementation

[0039] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0040] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0041] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship 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 of this application.

[0042] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0043] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "implementation," "example," "a particular embodiment," "example," or "specific example," etc., indicate that the specific feature, structure, material, or characteristic described in connection with that embodiment or example 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. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0044] Reference Figures 1 to 9 A seat cushion is disclosed, comprising a seat cushion frame 1 and a lifting mechanism 2. The lifting mechanism 2 includes a lifting member 21, a transmission member 22, and a driving member 23. The transmission member 22 is located inside the seat cushion frame 1 and has a hinge end hinged to the seat cushion frame 1 and a mating end opposite to the hinge end. The driving member 23 is disposed on the seat cushion frame 1 and is drively connected to the mating end to drive the lifting member 21 to rotate. The lifting member 21 is located inside the seat cushion frame 1 and has a lifting section 211 and a connecting section 212 arranged at an angle to the lifting section 211. The lifting section 211 extends along the rotation axis of the transmission member 22, and the two ends of the connecting section 212 are respectively fixedly connected to the lifting section 211 and the hinge end.

[0045] It is understood that the lifting mechanism 2 is located at the rear of the seat cushion frame 1, and the lifting member 21 has an initial position and a lifting position above the initial position. When the lifting member 21 is in the lifting position, it can push the seat cushion filling upward.

[0046] It should be noted that the seat cushion frame 1 has two spaced-apart side plates 11. The aforementioned "transmission member 22 is located inside the seat cushion frame 1" means that the transmission member 22 is located between the two side plates 11. The aforementioned "lifting member 21 is located inside the seat cushion frame 1" means that the lifting member 21 is located between the two side plates 11. The outer side of the seat cushion frame 1 refers to the side where the two side plates 11 are opposite to each other. The two ends of the transmission member 22 in the length direction are the hinge end and the mating end, respectively. The lifting member 21 has two connecting sections 212, which are located at the two ends of the lifting section 211. One connecting section 212 is hinged to the seat cushion frame 1 at the end away from the lifting section 211, and the other lifting section 211 is fixedly connected to the hinge end of the transmission member 22 at the end away from the lifting section 211. The aforementioned "lifting section 211 extends along the rotation axis of the transmission member 22" means that the length direction of the lifting section 211 is parallel to the rotation axis of the transmission member 22.

[0047] When the seat cushion filling at the rear end of the seat cushion is pushed upward, the drive component 23 is activated. The drive component 23 drives the mating end toward the first direction, so that the transmission component 22 rotates around the hinge point between itself and the seat cushion frame 1 under the transmission action of the drive component 23 and the mating end. Then, the transmission component 22 drives the connecting section 212 to rotate, and the connecting section 212 drives the lifting section 211 to rotate, so that the lifting section 211 moves upward and pushes the seat cushion filling at the rear end of the seat cushion upward, thereby lifting the rear end of the seat cushion.

[0048] When the seat cushion filling at the rear end of the seat cushion is lowered, the drive unit 23 is activated. The drive unit 23 drives the mating end in a second direction opposite to the first direction, so that the transmission unit 22 rotates around the hinge point between itself and the seat cushion frame 1 under the transmission action of the drive unit 23 and the mating end. Then, the transmission unit 22 drives the connecting section 212 to rotate, and the connecting section 212 drives the lifting section 211 to rotate, so that the lifting section 211 moves downward. Finally, the seat cushion filling moves downward under its own elasticity, so as to achieve the lowering of the rear end of the seat cushion.

[0049] Since the hinge end and the mating end of the transmission component 22 are arranged opposite each other, and the connecting section 212 of the lifting component 21 is connected to the hinge end, compared with the prior art where one end of the transmission plate is hinged to the seat cushion frame 1, the other end of the transmission plate is connected to the lifting structure, and the connection position between the driving component and the transmission plate is located in the middle of the length direction of the transmission plate, the technical solution in this application can reduce the length of the transmission component 22, thereby reducing the torque generated when the transmission component 22 is subjected to force, so as to reduce the risk of deformation of the transmission component 22, thereby ensuring the quality stability of the seat cushion, ensuring the quality stability of the seat with the seat cushion of this application installed, and also ensuring the normal operation of the rear end lifting function of the seat cushion and improving the load capacity of the lifting mechanism 2.

[0050] This application does not specify the fixed connection method between the connecting section 212 and the lifting section 211. Preferably, refer to Figure 7 and Figure 9 Both the connecting section 212 and the lifting section 211 are rod-shaped structures and are integrally formed. The connecting section 212 and the lifting section 211 are perpendicular to each other, meaning the lifting member 21 is a C-shaped rod structure. This reduces the manufacturing difficulty of the lifting member 21 and increases its structural strength. In other embodiments, the connecting section 212 can also be a sheet-like structure, and the lifting section 211 can be a rod-shaped structure passing through the connecting section 212, with the lifting section 211 fixedly connected to the connecting section 212 by welding; or both the connecting section 212 and the lifting section 211 are rod-shaped structures, and the included angle between them is greater than 90°.

[0051] This application does not specify the transmission connection method between the driving component 23 and the transmission component 22. Preferably, refer to Figure 5 , Figure 6 and Figure 8 The drive unit 23 has an output shaft, and the output shaft is provided with a gear 231. The mating end is provided with teeth 221 that mesh with the gear 231.

[0052] It is understandable that gear 231 is coaxially fixedly connected to the output shaft of drive component 23, the end face of the mating end is an arc-shaped surface, and the center of the arc-shaped surface is located on the rotation axis of transmission component 22. Multiple teeth 221 are arranged sequentially along the extension direction of the arc-shaped surface.

[0053] When the seat padding at the rear end of the seat cushion is pushed upward, the drive unit 23 is activated. The output shaft of the drive unit 23 drives the gear 231 to rotate in the first direction. The gear 231 moves relative to the teeth 221 located at the mating end. Then, the teeth 221 located at the mating end drive the transmission unit 22 to rotate. The transmission unit 22 rotates around the hinge point between itself and the seat cushion frame 1, thereby causing the lifting section 211 to rise and push the seat padding at the rear end of the seat cushion upward, so as to lift the rear end of the seat cushion.

[0054] When the seat cushion filling at the rear end of the seat cushion is lowered, the drive unit 23 is activated. The output shaft of the drive unit 23 drives the gear 231 to rotate in a second direction opposite to the first direction. The gear 231 moves relative to the teeth 221 at the mating end, which in turn causes the teeth 221 at the mating end to drive the transmission unit 22 to rotate. The transmission unit 22 rotates around the hinge point between itself and the seat cushion frame 1, thereby causing the lifting section 211 to descend. The seat cushion filling at the rear end of the seat cushion moves downward under its own elasticity, thereby achieving the descent of the rear end of the seat cushion.

[0055] This application achieves the transmission connection between the driving component 23 and the mating end by setting gear 231 and teeth 221. This ensures the transmission efficiency between the driving component 23 and the mating end on the one hand, and simplifies the transmission connection method between the driving component 23 and the mating end on the other hand. This facilitates the transmission connection between the driving component 23 and the mating end and reduces the assembly difficulty of the lifting mechanism 2, thereby improving the assembly efficiency of the seat cushion.

[0056] In other embodiments, the output shaft of the drive member 23 is vertically fixedly connected to a connecting rod, and the end of the connecting rod away from the output shaft of the drive member 23 is hinged to the mating end of the transmission member 22, so that the output shaft of the drive member 23 is connected to the mating end of the transmission member 22 through the connecting rod.

[0057] In this embodiment, the structure of the drive component 23 is not specifically limited. Preferably, the drive component 23 is a servo motor to achieve precise control of the rotation angle of the transmission component 22. In other embodiments, the drive component 23 can also be a gear reduction motor, etc.

[0058] This application does not specifically limit the relative positional relationship between the drive component 23 and the seat cushion frame 1. Preferably, refer to Figure 6 and Figure 8 The drive unit 23 is located on the outside of the seat frame 1, and the output shaft of the drive unit 23 passes through the seat frame 1, while the gear 231 is located inside the seat frame 1.

[0059] It is understood that the drive unit 23 is located on one side plate 11 of the seat cushion frame 1, away from the other side plate 11. The side plate 11 of the seat cushion frame 1 is provided with a hole structure. The output shaft of the drive unit 23 passes through the hole structure of the side plate 11. The gear 231 is located between the two side plates 11 of the seat cushion frame 1.

[0060] Since the drive component 23 is located on the outside of the seat cushion frame 1, it can avoid the internal space of the seat cushion frame 1. This allows the seat cushion frame 1 to have a large space inside after the lifting mechanism 2 is installed, so that other functional components that need to be installed on the seat cushion frame 1 can still be installed. This avoids the situation where other functional components that need to be installed on the seat cushion frame 1 cannot be installed because the drive component 23 is located inside the seat cushion frame 1, thus ensuring the diversity of seat cushion functions. Furthermore, since the output shaft of the drive component 23 passes through the seat cushion frame 1 and the gear 231 is located inside the seat cushion frame 1, it ensures that the gear 231 can mesh with the teeth 221 located at the mating end, so that the drive component 23 can drive the transmission component 22 to rotate, thereby ensuring the normal operation of the lifting mechanism 2.

[0061] Furthermore, refer to Figure 5 , Figure 6 and Figure 8 The lifting mechanism 2 also includes a retainer 24 located inside the seat frame 1. The drive member 23 has a screw that passes through the seat frame 1 and the retainer 24. The screw is threadedly connected to a nut located on the side of the retainer 24 away from the drive member 23. The output shaft of the drive member 23 passes through the retainer 24, and the gear 231 is located on the side of the retainer 24 facing the drive member 23.

[0062] Understandably, the side plate 11 of the seat cushion frame 1 has a hole structure for the screw to pass through; after the retainer 24 is installed on the seat cushion frame 1, one end of the retainer 24 abuts against the side plate 11 of the seat cushion frame 1, and the other end of the retainer 24 has a gap with the side plate 11 of the seat cushion frame 1 to accommodate the gear 231; the retainer 24 has a hole structure for the screw and the output shaft of the drive member 23 to pass through; after the nut is installed on the screw, the nut abuts against the side of the retainer 24 away from the drive member 23 to achieve the fastening of the drive member 23.

[0063] Since the retainer 24 is located inside the seat frame 1, and the drive member 23 has a screw that passes through the seat frame 1 and the retainer 24, the screw is threadedly connected to a nut located on the side of the retainer 24 away from the drive member 23. This achieves two goals: firstly, the drive member 23 is fixedly connected to the seat frame 1; secondly, the retainer 24 can be used to strengthen the connection between the drive member 23 and the seat frame 1, ensuring the connection stability between the drive member 23 and the seat frame 1. Furthermore, since the output shaft of the drive member 23 passes through the retainer 24, and the gear 231 is located on the side of the retainer 24 facing the drive member 23, the retainer 24 can also be used to support the output shaft of the drive member 23, increasing the stability of the drive member 23 and ensuring the stability of the gear 231, thus ensuring the meshing stability of the gear 231 and the teeth 221, thereby ensuring the transmission efficiency and transmission stability between the drive member 23 and the transmission member 22.

[0064] Furthermore, refer to Figure 6 , Figure 7 and Figure 9 The transmission component 22 is provided with a limiting groove 222, and multiple screws are provided at intervals. One of the screws is provided with a protective sleeve 232 that passes through the limiting groove 222.

[0065] It is understandable that the limiting groove 222 is an arc-shaped groove, the center of which is located on the rotation axis of the transmission component 22. Each screw is threaded with a nut, and the protective sleeve 232 is located between the retainer 24 and the drive component 23.

[0066] Because multiple screws are spaced apart, the number of connection points between the drive component 23 and the seat cushion frame 1 is increased, thereby increasing the connection stability between the drive component 23 and the seat cushion frame 1. Furthermore, because one of the screws is provided with a threaded sleeve 232 that passes through the limiting groove 222, the threaded sleeve 232 can isolate the screw and the groove wall of the limiting groove 222 to prevent the outer circumferential surface of the screw from directly contacting the groove wall of the limiting groove 222 and causing damage to the screw thread. At the same time, it can also prevent the screw thread from directly contacting the groove wall of the limiting groove 222, which may guide the groove wall of the limiting groove 222 and cause the transmission component 22 to jam, thus ensuring the smooth rotation of the transmission component 22. On the other hand, the threaded sleeve 232 can also support the cage 24 to increase the stability of the cage 24.

[0067] This application does not specifically limit the connection method between the threaded sleeve 232 and the screw. Preferably, the threaded sleeve 232 is threadedly connected to the screw. This not only increases the connection stability between the drive member 23 and the seat cushion frame 1 by having the threaded sleeve 232 press against the side plate 11 of the seat cushion frame 1, but also further prevents damage to the screw threads that may occur when the transmission member 22 rotates. In other embodiments, the threaded sleeve 232 may simply be fitted onto the outside of the screw, i.e., the inner wall of the threaded sleeve 232 is a smooth circumferential surface, to facilitate the installation of the threaded sleeve 232.

[0068] In other embodiments, the drive element 23 may also be disposed inside the seat cushion frame 1.

[0069] In other embodiments, the driving member 23 may also be a cylinder, with the cylinder body hinged to the seat frame 1 and the piston rod of the cylinder hinged to the mating end of the transmission member 22, so as to drive the transmission member 22 to rotate by extending and retracting the piston rod of the cylinder.

[0070] This application does not specifically limit the extension direction of the connecting section 212 or the positional relationship between the lifting section 211 and the hinge end. Preferably, refer to Figure 7 and Figure 9 The extension direction of the connecting section 212 is parallel to the direction from the hinge end to the mating end, and the lifting section 211 and the mating end are located on the same side of the hinge end.

[0071] It is understandable that the length direction of the connecting segment 212 is set parallel to the length direction of the transmission component 22.

[0072] Since the lifting section 211 and the mating end are located on the same side of the hinge end, the internal space of the seat frame 1 required by the lifting mechanism 2 can be further reduced. This allows for more space to be reserved for other functional components that need to be installed inside the seat frame 1, and also facilitates the installation of other functional components that need to be installed inside the seat frame 1.

[0073] In other embodiments, the extension direction of the connecting section 212 may be set at an angle to the direction from the hinge end to the mating end, or the lifting section 211 may be located on the side of the hinge end away from the mating end.

[0074] This application does not impose specific limitations on the structure of the connecting segment 212, which can adopt any of the following embodiments: Implementation Method 1, in this implementation method, refer to Figure 9 The end of the connecting section 212 away from the lifting section 211 extends toward the side where the transmission member 22 is located and is provided with an extension section 213, which is fixedly connected to the hinge end.

[0075] It is understandable that the extension 213 is set perpendicular to the transmission component 22.

[0076] Since the end of the connecting section 212 away from the lifting section 211 extends toward the side where the transmission member 22 is located, an extension section 213 is provided. The extension section 213 is fixedly connected to the hinge end, thereby increasing the distance between the connecting section 212 and the transmission member 22, so that the connecting section 212 and the mating end can avoid each other. On the one hand, it achieves the effect of facilitating the transmission connection between the driving member 23 and the mating end, and on the other hand, it ensures the smoothness of the rotation of the transmission member 22, so as to ensure the stable operation of the lifting mechanism 2.

[0077] In this embodiment, the method of fixing the extension section 213 and the transmission member 22 is not specifically limited. Preferably, the extension section 213 is fixedly connected to the hinge end of the transmission member 22 by welding to ensure the connection stability between the lifting member 21 and the transmission member 22. In other embodiments, one of the hinge end of the transmission member 22 and the extension section 213 is provided with a connecting block. The cross-sectional shape of the connecting block is non-circular. The other of the two is provided with a connecting hole adapted to the cross-sectional shape of the connecting block. The connecting block extends into the connecting hole to restrict the relative rotation between the extension section 213 and the transmission member 22. At the same time, the transmission member 22 is fixedly connected to the extension section 213 by bolts.

[0078] Implementation Method Two: In this implementation method, refer to... Figure 7The connecting section 212 includes a first section 214 fixedly connected to the transmission member 22, a second section 215 arranged parallel to the first section 214, and an intermediate section 216 located between the first section 214 and the second section 215. The second section 215 is fixedly connected to the lifting section 211, and the intermediate section 216 is inclined in the direction away from the transmission member 22 along the direction from the first section 214 to the second section 215.

[0079] It is understandable that the projection of the second segment 215 toward the transmission member 22 is at least partially aligned with the transmission member 22.

[0080] Since the first segment 214 is fixedly connected to the transmission component 22, the second segment 215 is connected to the lifting segment 211, and the middle segment 216 is inclined in the direction away from the transmission component 22 along the direction from the first segment 214 to the second segment 215, the distance between the second segment 215 and the transmission component 22 is increased, so that the second segment 215 and the mating end can avoid each other. On the one hand, it achieves the effect of facilitating the transmission connection between the driving component 23 and the mating end, and on the other hand, it ensures the smoothness of the rotation of the transmission component 22, so as to ensure the stable operation of the lifting mechanism 2.

[0081] In this embodiment, the method of fixing the first segment 214 to the transmission component 22 is not specifically limited. Preferably, the hinge end of the transmission component 22 is fixedly connected to a fixing bracket 223, and the first segment 214 is fixedly connected to the fixing bracket 223 by welding. This facilitates the fixing of the lifting component 21 to the transmission component 22 and further reduces the size of the transmission component 22. In other embodiments, the fixing bracket 223 can be omitted, and the first segment 214 can be directly fixedly connected to the transmission component 22 by welding, or the first segment 214 can be fixedly connected to the transmission component 22 by bolts.

[0082] This application does not specify the hinge method between the hinge end of the transmission component 22 and the seat frame 1. Preferably, refer to... Figure 5 and Figure 6 The seat cushion frame 1 is provided with a mounting plate 14, the mounting plate 14 having an abutment part 141 that rests against the seat cushion frame 1, and a hinge end that is hinged to the mounting plate 14.

[0083] It is understood that the side plates 11 of the seat cushion frame 1 are formed by stamping sheet metal, which results in a groove on the side of the two side plates 11 that are close to each other. The mounting plate 14 is located inside the side plates 11 of the seat cushion frame 1 so that after the transmission component 22 is installed on the seat cushion frame 1, the transmission component 22 can avoid the groove wall. When installing the mounting plate 14, the abutment part 141 is first placed against the top of the side plates 11 of the seat cushion frame 1 to support and position the mounting plate 14. Then, the mounting plate 14 is fixed by welding or bolting.

[0084] Since the hinge end is hinged to the mounting plate 14, it facilitates the installation of the transmission component 22 and avoids the possibility of interference between the transmission component 22 and the side plate 11 of the seat cushion frame 1, thus ensuring that the lifting mechanism 2 can lift the seat cushion filling to the correct height. Since the abutment part 141 abuts against the seat cushion frame 1, it can be used to position the mounting plate 14, thus facilitating the fixing of the mounting plate 14. At the same time, the abutment part 141 and the seat cushion frame 1 can be used to support the mounting plate 14, thereby increasing the connection stability between the mounting plate 14 and the seat cushion frame 1, and thus increasing the connection stability between the transmission component 22 and the seat cushion frame 1.

[0085] This application does not specifically limit the formation of the mating part 141; preferably, refer to Figure 5 and Figure 6 The overlapping portion 141 is formed by bending one top end of the mounting plate 14 toward the outside of the side plate 11, thereby reducing the manufacturing difficulty of the mounting plate 14. In other embodiments, the overlapping portion 141 may also be a rib welded to the top of the mounting plate 14.

[0086] Furthermore, refer to Figure 5 and Figure 6 The mounting plate 14 is bent outwards on both sides of the side plate 11 to form a support portion 142. The support portion 142 abuts against the groove wall of the groove on the side plate 11 to support the mounting plate 14. On the one hand, it can increase the connection stability between the mounting plate 14 and the seat frame 1, and on the other hand, it can increase the structural strength of the mounting plate 14 to ensure the stability of the transmission component 22.

[0087] Preferably, there are two mounting plates 14. One mounting plate 14 is located on one side plate 11 for mounting the transmission component 22, and the other mounting plate 14 is located on the other side plate 11 for mounting the connecting section 212 that needs to be hinged to the seat cushion frame 1.

[0088] In other embodiments, the mounting plate 14 can be omitted, and a boss can be integrally formed on the side plate 11 of the seat frame 1 at the position where the transmission component 22 needs to be installed, and the transmission component 22 is hinged to the boss.

[0089] In a preferred embodiment, refer to Figure 1 The seat cushion also includes a suspension spring 13 and a seat cushion filling. One end of the suspension spring 13 is attached to the front cross tube 12 of the seat cushion frame 1, and the other end of the suspension spring 13 is attached to the lifting section 211. The seat cushion filling is located above the suspension spring 13 so that the suspension spring 13 can support the seat cushion filling and increase the user's riding experience.

[0090] This application also discloses a seat, which includes a backrest and a seat cushion as described above.

[0091] Understandably, the lower end of the backrest is hinged to the rear end of the seat cushion so that the backrest can be laid flat.

[0092] Because the seat in this application uses the aforementioned seat cushion, the length of the transmission component 22 can be reduced, thereby reducing the torque generated when the transmission component 22 is subjected to force, thus reducing the risk of deformation of the transmission component 22 and ensuring the quality stability of the seat.

[0093] This application also discloses a vehicle that includes a seat cushion or a seat as described above.

[0094] Because the vehicle in this application uses the aforementioned seat cushion or seat, the torque generated when the transmission component 22 is subjected to force is reduced, thereby reducing the risk of easy deformation of the transmission component 22, ensuring the quality stability of the seat, and thus ensuring the quality stability of the vehicle, and improving the user experience.

[0095] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0096] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0097] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A seat cushion, characterized in that, The device includes a seat cushion frame (1) and a lifting mechanism (2). The lifting mechanism (2) includes a lifting member (21), a transmission member (22), and a driving member (23). The transmission member (22) is located inside the seat cushion frame (1) and has a hinge end that is hinged to the seat cushion frame (1) and a mating end opposite to the hinge end. The driving member (23) is disposed on the seat cushion frame (1) and is drively connected to the seat cushion frame (1). The mating end is capable of driving the lifting member (21) to rotate. The lifting member (21) is located inside the seat cushion frame (1), and the lifting member (21) has a lifting section (211) and a connecting section (212) arranged at an angle to the lifting section (211). The lifting section (211) extends along the rotation axis of the transmission member (22), and the two ends of the connecting section (212) are fixedly connected to the lifting section (211) and the hinge end, respectively.

2. A seat cushion according to claim 1, characterized in that, The drive unit (23) has an output shaft, the output shaft is provided with a gear (231), and the mating end is provided with teeth (221) that mesh with the gear (231).

3. A seat cushion according to claim 2, characterized in that, The drive unit (23) is located outside the seat frame (1), and the output shaft of the drive unit (23) passes through the seat frame (1), while the gear (231) is located inside the seat frame (1).

4. A seat cushion according to claim 3, characterized in that, The lifting mechanism (2) further includes a retainer (24) located inside the seat frame (1). The drive member (23) has a screw that passes through the seat frame (1) and the retainer (24). The screw is threadedly connected to a nut located on the side of the retainer (24) away from the drive member (23). The output shaft of the drive member (23) passes through the retainer (24), and the gear (231) is located on the side of the retainer (24) facing the drive member (23).

5. A seat cushion according to claim 4, characterized in that, The transmission component (22) is provided with a limiting groove (222), and multiple screws are provided at intervals, one of which is provided with a protective sleeve (232) that passes through the limiting groove (222).

6. A seat cushion according to any one of claims 1-5, characterized in that, The extension direction of the connecting segment (212) is parallel to the direction from the hinge end to the mating end, and the lifting segment (211) and the mating end are located on the same side of the hinge end.

7. A seat cushion according to any one of claims 1-5, characterized in that, The end of the connecting section (212) away from the lifting section (211) extends toward the side where the transmission member (22) is located and is provided with an extension section (213), the extension section (213) being fixedly connected to the hinge end; Alternatively, the connecting segment (212) may include a first segment (214) fixedly connected to the transmission member (22), a second segment (215) arranged parallel to the first segment (214), and an intermediate segment (216) located between the first segment (214) and the second segment (215). The second segment (215) may be fixedly connected to the lifting segment (211), and the intermediate segment (216) may be inclined in the direction away from the transmission member (22) along the direction from the first segment (214) to the second segment (215).

8. A seat cushion according to any one of claims 1-5, characterized in that, The seat cushion frame (1) is provided with a mounting plate (14), the mounting plate (14) has an abutment part (141) that rests against the seat cushion frame (1), and the hinge end is hinged to the mounting plate (14).

9. A type of seat, characterized in that, Includes a backrest and a seat cushion as described in any one of claims 1-8 above.

10. A vehicle, characterized in that, Includes a seat cushion as described in any one of claims 1-8 or a seat as described in claim 9.

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