A seat cushion, seat and vehicle

Abstract

This application belongs to the technical field of vehicle seats and discloses a seat cushion, a seat, and a vehicle. The seat cushion includes a seat cushion frame and a lifting mechanism. The seat cushion frame has a rear cross tube. The lifting mechanism includes a lifting member, a transmission member, and a driving member. The lifting member is connected to the rear cross tube. The transmission member is located on the side of the lifting member and can drive the lifting member to rotate. The outer peripheral surface of the transmission member is provided with multiple teeth. The driving member is located on the outside of the seat cushion frame, and the output shaft of the driving member is provided with a drive gear that meshes with the teeth. This improves the assembly efficiency of the seat cushion, ensures the stability of the lifting mechanism, and guarantees the versatility of the seat cushion's functions.

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 cushion frame. This mechanism elevates the seat cushion filling at the rear end, overcoming the height difference between the rear 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 filling upwards, thereby lifting the rear end of the seat cushion.

[0005] However, since the lifting structure is usually hinged to the seat cushion frame using bolted joints, this increases the number of parts that need to be assembled during seat production, thus reducing assembly efficiency. Furthermore, there is a risk of the bolts loosening over time, affecting the stability of the lifting mechanism. Additionally, the drive structure typically uses an electric lead screw, whose slider has a connecting arm hinged to the lifting structure. This connecting arm drives the lifting structure under the action of the slider, causing it to rotate and push the seat cushion filling. However, to ensure the motor can drive the lifting structure, it needs to be placed inside the seat cushion frame. This causes the motor to interfere with other functional components that also need to be located inside the seat cushion frame, preventing the installation of other functional components and thus limiting the versatility of the seat cushion's functions. Utility Model Content

[0006] This application provides a seat cushion to improve the assembly efficiency of the seat cushion, increase the stability of the lifting mechanism, and ensure the versatility of the seat cushion's functions.

[0007] The technical solution adopted in this application is as follows: A seat cushion includes a seat cushion frame and a lifting mechanism. The seat cushion frame has a rear cross tube. The lifting mechanism includes a lifting member, a transmission member, and a driving member. The lifting member is connected to the rear cross tube. The transmission member is located on the side of the lifting member and can drive the lifting member to rotate. The outer peripheral surface of the transmission member is provided with a plurality of teeth. The driving member is located on the outside of the seat cushion frame, and the output shaft of the driving member is provided with a drive gear that meshes with the teeth.

[0008] By adopting the above technical solution, when the rear end of the seat cushion is lifted, the output shaft of the drive component drives the drive gear to rotate, so that the transmission component rotates under the meshing action of the drive gear and the teeth, and then the transmission component drives the lifting component to rotate, so that the lifting component pushes the rear end of the seat cushion filling upward, thereby achieving the lifting of the rear end of the seat cushion.

[0009] Since the lifting component is connected to the rear cross tube, and thus the lifting component is hinged to the seat frame by the rear cross tube, on the one hand, compared with the existing technology that uses bolts to install the lifting component, the installation difficulty of the lifting component is reduced and the installation efficiency of the lifting component is improved, thereby improving the assembly efficiency of the seat. On the other hand, it avoids the situation where the bolt pair loosens and affects the stability of the lifting mechanism, thereby ensuring the stability of the lifting mechanism.

[0010] Meanwhile, the drive unit is located on the outside of the seat cushion frame, which allows the drive unit to avoid interference with the internal space of the seat cushion frame. This provides more space for other functional components that need to be installed inside the seat cushion frame. On the one hand, it facilitates the installation of other functional components that need to be installed inside the seat cushion frame. On the other hand, it avoids interference between the drive unit and other functional components that need to be installed inside the seat cushion frame, which would prevent the installation of other functional components that need to be installed inside the seat cushion frame. This ensures the versatility of seat cushion functions.

[0011] Optionally, the rear cross tube is rotatably connected to the seat cushion frame, and the transmission component and the lifting component are both fixedly connected to the rear cross tube.

[0012] By adopting the above technical solution, when the rear end of the seat cushion is lifted, the output shaft of the drive component drives the drive gear to rotate, so that the drive gear rotates relative to the teeth of the transmission component. Then, the transmission component drives the rear cross tube to rotate under the drive of the drive gear. The rear cross tube drives the lifting component to rotate, so that the lifting component pushes the rear end of the seat cushion filling upward, thereby lifting the rear end of the seat cushion.

[0013] Since the lifting component is fixedly connected to the rear cross tube, the need to separately hinge the lifting component to the seat frame is avoided, thereby increasing the stability of the lifting component and thus increasing the stability of the lifting mechanism. At the same time, the number of parts required to assemble the seat is reduced, which further improves the assembly efficiency of the seat.

[0014] Optionally, the lifting member includes a connecting piece sleeved on the rear cross tube and a lifting rod disposed on the connecting piece, the transmission member is fixedly connected to the connecting piece, the output shaft of the driving member passes through the seat cushion frame, and the driving gear is located inside the seat cushion frame.

[0015] By adopting the above technical solution, when the rear end of the seat cushion is lifted, the output shaft of the drive component drives the drive gear to rotate, so that the drive gear rotates relative to the teeth of the transmission component. Then, the transmission component drives the connecting piece to rotate under the drive of the drive gear. The connecting piece drives the lifting rod to rotate around the rear horizontal tube, so that the lifting rod pushes the rear end of the seat cushion filling upward, thereby lifting the rear end of the seat cushion.

[0016] Because the connecting piece is fitted onto the rear horizontal tube, the lifting component is hinged to the seat frame via the rear horizontal tube. This avoids the need for separate bolt sets to install the lifting component. On one hand, installing the lifting component only requires fitting the connecting piece onto the rear horizontal tube, reducing the installation difficulty and improving the assembly efficiency of the seat. On the other hand, using the connecting piece fitted onto the rear horizontal tube to achieve hinged connection between the lifting component and the seat frame also increases the stability of the lifting component, preventing the lifting mechanism from being affected by loose bolt sets, thus increasing the stability of the lifting mechanism.

[0017] Optionally, the rear horizontal tube is provided with a height adjustment plate, which is located between the transmission member and the connecting plate, and the connecting plate extends to be provided with an extension wall that is fixedly connected to the transmission member.

[0018] By adopting the above technical solution, since the connecting piece is provided with an extended wall that is fixedly connected to the transmission component, the height adjustment piece and the drive gear are avoided, so that the drive gear can mesh with the teeth provided on the transmission component. At the same time, the height adjustment piece can also be used to position and limit the lifting component, thereby increasing the connection stability between the lifting component and the rear horizontal tube.

[0019] Optionally, a driven gear is rotatably connected to the inner side of the seat frame. The driven gear is located between the driving gear and the teeth, and the driven gear meshes with the driving gear and the teeth. The diameter of the driven gear is larger than the diameter of the driving gear.

[0020] By adopting the above technical solution, since the driven gear is located between the driving gear and the teeth, and the driven gear meshes with the driving gear and the teeth, the driving gear is connected to the teeth through the driven gear transmission. Since the diameter of the driven gear is larger than that of the driven gear, the speed of the driving gear is greater than that of the driven gear, thereby reducing the load on the driving component.

[0021] Optionally, a retainer is provided on the inner side of the seat cushion frame, and the drive member is provided with a screw that passes through the seat cushion frame and the retainer. The screw is threadedly connected to a nut located on the side of the retainer away from the drive member. The output shaft of the drive member passes through the retainer, and the drive gear is located between the retainer and the seat cushion frame.

[0022] By adopting the above technical solution, since the drive component is provided with a screw that passes through the seat cushion frame and the retainer, and the screw is 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 using the screw and nut. On the other hand, the retainer can also 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. Furthermore, since the output shaft of the drive component passes through the retainer and the drive gear is located between the retainer and the seat cushion frame, the output shaft of the drive component can be supported by the retainer, thereby increasing the stability of the drive gear and the output shaft of the drive component.

[0023] Optionally, the inner side of the seat cushion frame is provided with a support shaft that passes through the retainer, and the outer side of the support shaft is fitted with a driven gear located between the teeth and the driving gear, and the driven gear is located between the seat cushion frame and the retainer.

[0024] By adopting the above technical solution, since the support shaft passes through the cage, the cage can be used to support the support shaft, thereby increasing the stability of the driven gear. This ensures both the driving stability of the drive component to the transmission component and the driving efficiency of the drive component to the transmission component.

[0025] Optionally, the transmission component has a connecting hole, and the rear horizontal tube passes through the connecting hole.

[0026] By adopting the above technical solution, for the above-mentioned scheme in which the transmission component is fixedly connected to the rear horizontal tube, by passing the rear horizontal tube through the connection hole, the fixed connection area between the transmission component and the rear horizontal tube is increased, thereby increasing the connection stability between the transmission component and the rear horizontal tube. This avoids the situation where the connection between the transmission component and the rear horizontal tube is easily torn when the load force of the lifting mechanism is large, thereby increasing the load capacity of the lifting mechanism.

[0027] Regarding the above-mentioned scheme where the transmission component is fixedly connected to the connecting plate, the rear horizontal tube can be used to support the transmission component, thereby increasing the stability of the transmission component and preventing the transmission component from twisting when the load force of the lifting mechanism is large. This also increases the load capacity of the lifting mechanism.

[0028] This application also provides a seat to improve the assembly efficiency of the seat and ensure the versatility of the seat's functions.

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

[0030] By adopting the above technical solution, the seat in this application uses the aforementioned seat cushion, thereby improving the assembly efficiency of the seat, increasing the stability of the lifting mechanism in the seat, and enabling the installation of other functional components in the seat cushion, thus ensuring the diversity of seat functions.

[0031] This application also provides a vehicle to improve the 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 above-mentioned seat cushion or seat, other functional components can be installed in the seat cushion to ensure the diversity of seat cushion functions in the vehicle, thereby 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 seat cushion frame has a rear cross tube, and the lifting mechanism includes a lifting component, a transmission component, and a driving component. The lifting component is connected to the rear cross tube, the transmission component is located on the side of the lifting component and can drive the lifting component to rotate, and the outer peripheral surface of the transmission component is provided with multiple teeth. The driving component is located on the outside of the seat cushion frame, and the output shaft of the driving component is provided with a drive gear that meshes with the teeth. Therefore, compared with the prior art of using bolts to install the lifting component, the installation difficulty of the lifting component is reduced and the installation efficiency of the lifting component is improved, thereby improving the assembly efficiency of the seat cushion. On the other hand, it avoids the situation where the bolt pair loosens and affects the stability of the lifting mechanism, thus ensuring the stability of the lifting mechanism. Furthermore, it can avoid the situation where the driving component interferes with other functional components that need to be installed inside the seat cushion frame, which would prevent the installation of other functional components that need to be installed inside the seat cushion frame, thus ensuring the diversity of seat cushion functions.

[0035] 2. In this application, the rear cross tube is rotatably connected to the seat frame, and the transmission component and the lifting component are fixedly connected to the rear cross tube. This avoids the need to separately hinge the lifting component to the seat frame, thereby increasing the stability of the lifting component and thus increasing the stability of the lifting mechanism. At the same time, it reduces the number of parts required to assemble the seat, thereby further improving the assembly efficiency of the seat.

[0036] 3. The lifting component in this application includes a connecting piece sleeved on the rear cross tube and a lifting rod disposed on the connecting piece. The transmission component is fixedly connected to the connecting piece, and the output shaft of the drive component passes through the seat cushion frame, with the drive gear located inside the seat cushion frame. This allows the lifting component to be hinged to the seat cushion frame via the rear cross tube, avoiding the need for separate bolt pairs for installation. On the one hand, when installing the lifting component, only the connecting piece needs to be sleeved on the rear cross tube, reducing the installation difficulty and improving the assembly efficiency of the seat cushion. On the other hand, by using the connecting piece sleeved on the rear cross tube to achieve hinged connection between the lifting component and the seat cushion frame, the stability of the lifting component can be increased, preventing the lifting mechanism from being affected by loose bolt pairs, thereby increasing the stability 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 schematic diagram of the seat cushion described in one embodiment of this application from another perspective; the retainer is not shown in the figure. Figure 3 This is a schematic diagram showing the connection relationship between the lifting member, the transmission member, and the rear horizontal tube in one embodiment of this application. Figure 4 This is a partial structural cross-sectional view of the seat cushion described in another embodiment of this application; Figure 5 This is a partial structural cross-sectional view of the seat cushion described in another embodiment of this application; the retainer is not shown in the figure. Figure 6 This is a partial structural diagram of the seat cushion described in another embodiment of this application. The driven gear and the cage are not shown in the figure. Figure 7 This is a schematic diagram showing the connection relationship between the transmission component and the lifting component in another embodiment of this application; Figure 8This is a partial structural diagram of the seat cushion described in another embodiment of this application, mainly showing the retainer.

[0038] Figure label: 1. Seat cushion frame; 11. Rear cross tube; 12. Side plate; 121. Driven gear; 122. Cage; 123. Support shaft; 13. Front cross tube; 2. Lifting mechanism; 21. Lifting component; 211. Connecting piece; 212. Lifting rod; 213. Bushing; 214. Extension wall; 22. Transmission component; 221. Gear; 222. Connecting hole; 23. Driving component; 231. Drive gear; 3. Base; 31. Height adjustment piece; 32. Electric lead screw. 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 8 A seat cushion is disclosed, which includes a seat cushion frame 1 and a lifting mechanism 2. The seat cushion frame 1 has a rear cross tube 11. The lifting mechanism 2 includes a lifting member 21, a transmission member 22 and a driving member 23. The lifting member 21 is connected to the rear cross tube 11. The transmission member 22 is located on the side of the lifting member 21 and can drive the lifting member 21 to rotate. The outer peripheral surface of the transmission member 22 is provided with a plurality of teeth 221. The driving member 23 is located on the outside of the seat cushion frame 1, and the output shaft of the driving member 23 is provided with a drive gear 231 that meshes with the teeth 221.

[0045] It is understood that the seat cushion frame 1 also has side plates 12 and front cross tubes 13. The front cross tubes 13 and the rear cross tubes 11 are arranged parallel and spaced apart. There are two side plates 12, which are located at the two ends of the rear cross tubes 11 and the front cross tubes 13, respectively. The rear cross tubes 11 are located at the rear end of the seat cushion frame 1, and the front cross tubes 13 are located at the front end of the seat cushion frame 1. The outer side of the seat cushion frame 1 mentioned above refers to the side where the two side plates 12 are opposite to each other, and the inner side of the seat cushion frame 1 refers to the side where the two side plates 12 are close to each other. The drive gear 231 is coaxially fixedly connected to the output shaft of the drive component 23. The transmission component 22 has an arc-shaped surface. The distance from any point on the arc-shaped surface to the rotation axis of the transmission component 22 is equal. Multiple teeth 221 are arranged sequentially along the circumference of the arc-shaped surface.

[0046] When the rear end of the seat cushion is lifted, the output shaft of the drive member 23 drives the drive gear 231 to rotate in the first direction, so that the transmission member 22 rotates under the meshing action of the drive gear 231 and the teeth 221, and then the transmission member 22 drives the lifting member 21 to rotate, so that the lifting member 21 pushes the rear end of the seat cushion filling upward, thereby lifting the rear end of the seat cushion.

[0047] When the rear end of the seat cushion is lowered, the output shaft of the drive member 23 drives the drive gear 231 to rotate in a second direction opposite to the first direction, so that the transmission member 22 rotates under the meshing action of the drive gear 231 and the teeth 221, and then the transmission member 22 drives the lifting member 21 to move, so that the lifting member 21 gradually descends, thereby causing the seat cushion filling to move downward under the action of its own elastic force, so as to achieve the descent of the rear end of the seat cushion.

[0048] Since the lifting component 21 is connected to the rear horizontal tube 11, it is attached to the rear horizontal tube 11 and hinged to the seat frame 1. On the one hand, compared with the existing technology of using bolts to install the lifting component 21, the installation difficulty of the lifting component 21 is reduced and the installation efficiency of the lifting component 21 is improved, thereby improving the assembly efficiency of the seat. On the other hand, it avoids the situation where the bolt pair loosens and affects the stability of the lifting mechanism 2, thus ensuring the stability of the lifting mechanism 2.

[0049] Meanwhile, the drive component 23 is located on the outside of the seat cushion frame 1, which allows the drive component 23 to avoid interference with the internal space of the seat cushion frame 1, thus reserving a larger space for other functional components that need to be installed inside the seat cushion frame 1. On the one hand, this facilitates the installation of other functional components that need to be installed inside the seat cushion frame 1, and on the other hand, it avoids interference between the drive component 23 and other functional components that need to be installed inside the seat cushion frame 1, which would prevent the installation of other functional components that need to be installed inside the seat cushion frame 1. This ensures the diversity of seat cushion functions.

[0050] This application does not impose specific limitations on the structure of the drive component 23. Preferably, the drive component 23 is a servo motor to achieve precise control over the lifting height of the lifting component 21. In other embodiments, the drive component 23 may also be a geared motor, etc.

[0051] This application does not specify the connection method between the lifting member 21 and the rear horizontal tube 11, which can be any of the following embodiments: Implementation Method 1, in this implementation method, refer to Figures 1 to 3 The rear horizontal tube 11 is rotatably connected to the seat frame 1, and the transmission component 22 and the lifting component 21 are both fixedly connected to the rear horizontal tube 11.

[0052] When the rear end of the seat cushion is lifted, the output shaft of the drive member 23 drives the drive gear 231 to rotate, so that the drive gear 231 rotates relative to the teeth 221 of the transmission member 22. Then, the transmission member 22 drives the rear cross tube 11 to rotate under the drive of the drive gear 231. The rear cross tube 11 drives the lifting member 21 to rotate, so that the lifting member 21 pushes the rear end of the seat cushion filling upward, thereby lifting the rear end of the seat cushion.

[0053] Since the lifting component 21 is fixedly connected to the rear cross tube 11, the situation of needing to separately hinge the lifting component 21 to the seat frame 1 is avoided, thereby increasing the stability of the lifting component 21 and thus increasing the stability of the lifting mechanism 2. At the same time, the number of parts required to be assembled when assembling the seat cushion is reduced, thereby further improving the assembly efficiency of the seat cushion.

[0054] In this embodiment, the positional relationship between the transmission component 22 and the seat cushion frame 1 is not specifically limited. Preferably, refer to Figures 1 to 3 The transmission component 22 and the drive gear 231 are both located inside the seat cushion frame 1, and the output shaft of the drive component 23 passes through the seat cushion frame 1. That is, the transmission component 22 and the drive gear 231 are both located inside the side plate 12. The side plate 12 is provided with a perforated structure, and the output shaft of the drive component 23 passes through the perforated structure of the side plate 12 to minimize the width of the seat cushion and facilitate miniaturization of the seat cushion design. In other embodiments, the transmission component 22 and the drive gear 231 can also be located outside the seat cushion frame 1, that is, the transmission component 22 and the drive gear 231 are both located outside the side plate 12.

[0055] In this embodiment, the structure of the lifting member 21 is not specifically limited. Preferably, refer to Figures 1 to 3 The lifting member 21 is a C-shaped rod structure with an opening at one end. Both sides of the open end of the rod structure are fixedly connected to the rear horizontal tube 11. The end of the rod structure opposite to its open end forms the lifting end of the lifting member 21. The lifting end can push the seat cushion filling, thereby reducing the manufacturing difficulty of the lifting member 21 and reducing the manufacturing cost of the seat cushion. In other embodiments, the lifting member 21 may also include a connecting piece 211 fixedly connected to the rear horizontal tube 11 and a lifting rod 212 fixedly connected to the connecting piece 211. The lifting rod 212 is located at the end of the connecting piece 211 away from the rear horizontal tube 11 and is parallel and spaced apart from the rear horizontal tube 11.

[0056] Implementation Method Two: In this implementation method, refer to... Figures 4 to 8 The lifting component 21 includes a connecting piece 211 sleeved on the rear cross tube 11 and a lifting rod 212 provided on the connecting piece 211. The transmission component 22 is fixedly connected to the connecting piece 211. The output shaft of the driving component 23 passes through the seat frame 1, and the drive gear 231 is located inside the seat frame 1.

[0057] It is understandable that the connecting piece 211 can rotate relative to the rear horizontal tube 11. There are two connecting pieces 211 spaced apart along the axial direction of the rear horizontal tube 11. The lifting rod 212 is spaced apart parallel to the rear horizontal tube 11, and the two ends of the lifting rod 212 are fixedly connected to the two connecting pieces 211 respectively. The lifting rod 212 constitutes the lifting end of the lifting component 21, and the lifting end can push the seat cushion filling upward.

[0058] When the rear end of the seat cushion is lifted, the output shaft of the drive member 23 drives the drive gear 231 to rotate, so that the drive gear 231 rotates relative to the teeth 221 of the transmission member 22. Then, the transmission member 22 drives the connecting piece 211 to rotate under the drive of the drive gear 231. The connecting piece 211 drives the lifting rod 212 to rotate around the rear horizontal tube 11, so that the lifting rod 212 pushes the rear end of the seat cushion filling upward, thereby lifting the rear end of the seat cushion.

[0059] Since the connecting piece 211 is sleeved on the rear horizontal tube 11, the lifting member 21 is hinged to the seat frame 1 through the rear horizontal tube 11. This avoids the need to use a separate bolt pair to install the lifting member 21. On the one hand, when installing the lifting member 21, it is only necessary to sleeve the connecting piece 211 on the rear horizontal tube 11 to reduce the installation difficulty of the lifting member 21 and improve the assembly efficiency of the seat. On the other hand, by using the connecting piece 211 to sleeve the rear horizontal tube 11 to achieve the hinge between the lifting member 21 and the seat frame 1, the stability of the lifting member 21 can also be increased to avoid the situation where the stability of the lifting mechanism 2 is affected by the loosening of the bolt pair, thereby increasing the stability of the lifting mechanism 2.

[0060] In this embodiment, the connection method between the rear horizontal tube 11 and the seat cushion frame 1 is not specifically limited. Preferably, the rear horizontal tube 11 is fixedly connected to the seat cushion frame 1, that is, the rear horizontal tube 11 is fixedly connected to the side plate 12, so as to increase the structural strength of the seat cushion frame 1. In other embodiments, the rear horizontal tube 11 can also be rotatably connected to the seat cushion frame 1, that is, the rear horizontal tube 11 is rotatably connected to the side plate 12.

[0061] The better one is to refer to Figure 7 The connecting piece 211 is provided with a bushing 213 sleeved on the outside of the rear horizontal tube 11 to reduce wear, vibration and noise generated when the connecting piece 211 rotates relative to the rear horizontal tube 11.

[0062] Furthermore, refer to Figures 4 to 6The rear horizontal tube 11 is provided with a height adjustment plate 31, which is located between the transmission member 22 and the connecting plate 211. The connecting plate 211 extends and is provided with an extension wall 214 fixedly connected to the transmission member 22. There is a gap between the extension wall 214 and the height adjustment plate 31, thereby realizing the avoidance between the height adjustment plate 31 and the drive gear 231, so that the drive gear 231 can mesh with the teeth 221 provided on the transmission member 22. At the same time, the height adjustment plate 31 can also be used to position and limit the lifting member 21, thereby increasing the connection stability between the lifting member 21 and the rear horizontal tube 11.

[0063] It should be noted that in the above-mentioned scheme in which the transmission component 22 is fixedly connected to the rear horizontal tube 11, the height adjustment piece 31 is sleeved on the outside of the rear horizontal tube 11, that is, the height adjustment piece 31 can rotate relative to the rear horizontal tube 11. However, in this embodiment, the height adjustment piece 31 can be sleeved on the outside of the rear horizontal tube 11 and then fixedly connected to the rear horizontal tube 11 by welding, or the welding process can be omitted, so that the height adjustment piece 31 can also rotate relative to the rear horizontal tube 11.

[0064] Furthermore, refer to Figures 4 to 6 The seat cushion also includes a base 3 located at the bottom of the seat cushion frame 1. The front end of the seat cushion frame 1 is hinged to the base 3. The base 3 is provided with an electric lead screw 32. The electric lead screw 32 has a servo motor, a lead screw that is driven by the output shaft of the servo motor, and a slider that is threaded to the lead screw. The slider is hinged to the end of the height adjustment plate 31 away from the rear cross tube 11. The height adjustment plate 31 is hinged to the base 3, and the hinge position between the height adjustment plate 31 and the base 3 is located between the hinge position between the height adjustment plate 31 and the slider and the connection position between the height adjustment plate 31 and the rear cross tube 11. Thus, the height adjustment plate 31 can be driven by the electric lead screw 32 to adjust the tilt angle of the seat cushion frame 1.

[0065] Specifically, when adjusting the tilt angle of the seat cushion frame 1, the electric lead screw 32 is activated, and the slider moves along the axis of the lead screw, which in turn pushes the height adjustment piece 31. At the same time, the slider and the height adjustment piece 31 rotate relative to each other, which causes the height adjustment piece 31 to rotate relative to the base 3, so that the end of the height adjustment piece 31 away from the slider swings upward, which in turn causes the rear cross tube 11 to drive the rear end of the seat cushion frame 1 to move upward, thereby realizing the adjustment of the tilt angle of the seat cushion frame 1.

[0066] In a preferred embodiment, refer to Figure 4 and Figure 5 A driven gear 121 is rotatably connected to the inner side of the seat frame 1. The driven gear 121 is located between the driving gear 231 and the tooth 221, and the driven gear 121 meshes with the driving gear 231 and the tooth 221. The diameter of the driven gear 121 is larger than the diameter of the driving gear 231.

[0067] It is understandable that the driving gear 231 is connected to the driven gear 121 through meshing with the teeth 221, and the radius of the arc surface on the transmission component 22 is greater than the radius of the driving gear 231.

[0068] Since the driven gear 121 is located between the driving gear 231 and the tooth 221, and the driven gear 121 meshes with the driving gear 231 and the tooth 221, the driving gear 231 is connected to the tooth 221 through the driven gear 121. Since the diameter of the driven gear 121 is larger than that of the driven gear 231, the rotational speed of the driving gear 231 is greater than that of the driven gear 121, thereby reducing the load on the drive component 23.

[0069] Of course, in some other embodiments, the driven gear 121 can be omitted so that the driving gear 231 directly meshes with the teeth 221.

[0070] This application does not specify the fixing method of the driving component 23. Preferably, refer to Figure 4 and Figure 8 The inner side of the seat frame 1 is provided with a retainer 122. The drive member 23 is provided with a screw that passes through the seat frame 1 and the retainer 122. The screw is threadedly connected to a nut located on the side of the retainer 122 away from the drive member 23. The output shaft of the drive member 23 passes through the retainer 122, and the drive gear 231 is located between the retainer 122 and the seat frame 1.

[0071] Understandably, both the seat cushion frame 1 and the retainer 122 have holes through which the screw passes. After the nut is installed on the screw, the nut is pressed against the retainer 122. The drive unit 23 is fixedly connected to the seat cushion frame 1 by its own screw and the nut threaded to the screw.

[0072] Since the drive component 23 is provided with a screw that passes through the seat cushion frame 1 and the retainer 122, and the screw is threadedly connected to a nut located on the side of the retainer 122 away from the drive component 23, the drive component 23 is fixedly connected to the seat cushion frame 1 by the screw and the nut. On the other hand, the retainer 122 can also strengthen the connection between the drive component 23 and the seat cushion frame 1 to ensure the connection stability between the drive component 23 and the seat cushion frame 1. Furthermore, since the output shaft of the drive component 23 passes through the retainer 122 and the drive gear 231 is located between the retainer 122 and the seat cushion frame 1, the retainer 122 can be used to support the output shaft of the drive component 23, thereby increasing the stability of the drive gear 231 and the output shaft of the drive component 23.

[0073] Preferably, the drive member 23 has multiple screws to increase the number of connection points between the drive member 23 and the seat cushion frame 1, thereby further increasing the connection stability between the drive member 23 and the seat cushion frame 1.

[0074] Furthermore, refer to Figure 5 The inner side of the seat frame 1 is provided with a support shaft 123 that passes through the retainer 122. The outer side of the support shaft 123 is fitted with a driven gear 121 located between the tooth 221 and the driving gear 231, and the driven gear 121 is located between the seat frame 1 and the retainer 122.

[0075] Understandably, the driven gear 121 is able to rotate relative to the support shaft 123, and the cage 122 has a hole structure through which the support shaft 123 passes.

[0076] Since the support shaft 123 passes through the cage 122, the cage 122 can be used to support the support shaft 123, thereby increasing the stability of the driven gear 121. This ensures both the driving stability of the drive member 23 on the transmission member 22 and the driving efficiency of the drive member 23 on the transmission member 22.

[0077] Preferably, the support shaft 123 is also threaded with a nut, which is located on the side of the cage 122 away from the drive member 23, to further increase the stability of the support shaft 123 and the cage 122.

[0078] In other embodiments, the drive component 23 can also be fixedly connected to the seat frame 1 by a U-shaped clamp.

[0079] In a preferred embodiment, refer to Figure 7 The transmission component 22 has a connecting hole 222, and the rear horizontal tube 11 is installed through the connecting hole 222.

[0080] Regarding the above-mentioned scheme in which the transmission component 22 is fixedly connected to the rear horizontal tube 11, after the rear horizontal tube 11 is passed through the connection hole 222, the transmission component 22 needs to be fixed by welding. This increases the fixed connection area between the transmission component 22 and the rear horizontal tube 11, thereby increasing the connection stability between the transmission component 22 and the rear horizontal tube 11. This prevents the connection between the transmission component 22 and the rear horizontal tube 11 from tearing easily when the lifting mechanism 2 is subjected to a large load force, thereby increasing the load capacity of the lifting mechanism 2.

[0081] Regarding the above-mentioned scheme in which the transmission component 22 is fixedly connected to the connecting piece 211, the rear horizontal tube 11 can be used to support the transmission component 22, thereby increasing the stability of the transmission component 22 and preventing the transmission component 22 from twisting when the load force borne by the lifting mechanism 2 is large, thus also increasing the load capacity of the lifting mechanism 2.

[0082] In a preferred embodiment, the seat cushion also includes a seat cushion filling material disposed above the seat cushion frame 1 and a seat cushion suspension spring disposed on the seat cushion frame 1 for supporting the seat cushion filling material. One end of the seat cushion suspension spring is attached to the front cross tube 13, and the other end of the seat cushion suspension spring is attached to the lifting member 21, so as to use the seat cushion suspension spring to support the seat cushion filling material and ensure the passenger's riding experience.

[0083] This application also discloses a seat, which includes a backrest and a seat cushion as described above.

[0084] Because the seat in this application uses the aforementioned seat cushion, the assembly efficiency of the seat is improved, the stability of the lifting mechanism 2 in the seat is increased, and other functional components can be installed in the seat cushion, thereby ensuring the diversity of seat functions.

[0085] This application also discloses a vehicle that includes a seat cushion or a seat as described above.

[0086] Because the vehicle in this application uses the aforementioned seat cushion or seat, other functional components can be installed in the seat cushion to ensure the diversity of seat cushion functions in the vehicle, thereby improving the user experience.

[0087] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0088] 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.

[0089] 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 frame (1) and a lifting mechanism (2). The seat frame (1) has a rear cross tube (11). The lifting mechanism (2) includes a lifting member (21), a transmission member (22), and a driving member (23). The lifting member (21) is connected to the rear cross tube (11). The transmission member (22) is located on the side of the lifting member (21) and can drive the lifting member (21) to rotate. The outer peripheral surface of the transmission member (22) is provided with a plurality of teeth (221). The driving member (23) is located on the outside of the seat frame (1), and the output shaft of the driving member (23) is provided with a drive gear (231) that meshes with the teeth (221).

2. A seat cushion according to claim 1, wherein The rear horizontal tube (11) is rotatably connected to the seat cushion frame (1), and the transmission component (22) and the lifting component (21) are both fixedly connected to the rear horizontal tube (11).

3. A seat cushion according to claim 1, wherein The lifting member (21) includes a connecting piece (211) sleeved on the rear cross tube (11) and a lifting rod (212) provided on the connecting piece (211). The transmission member (22) is fixedly connected to the connecting piece (211). The output shaft of the driving member (23) passes through the seat frame (1), and the drive gear (231) is located inside the seat frame (1).

4. A seat cushion according to claim 3, wherein The rear horizontal tube (11) is provided with a height adjustment plate (31), which is located between the transmission member (22) and the connecting plate (211), and the connecting plate (211) extends with an extension wall (214) fixedly connected to the connecting plate (211).

5. A seat cushion according to any one of claims 1 to 4, wherein The inner side of the seat frame (1) is rotatably connected to a driven gear (121). The driven gear (121) is located between the driving gear (231) and the teeth (221), and the driven gear (121) meshes with the driving gear (231) and the teeth (221). The diameter of the driven gear (121) is larger than the diameter of the driving gear (231).

6. A seat cushion according to any one of claims 1 to 4, wherein The inner side of the seat frame (1) is provided with a retainer (122). The drive member (23) is provided with a screw that passes through the seat frame (1) and the retainer (122). The screw is threadedly connected to a nut located on the side of the retainer (122) away from the drive member (23). The output shaft of the drive member (23) passes through the retainer (122), and the drive gear (231) is located between the retainer (122) and the seat frame (1).

7. A seat cushion according to claim 6, wherein The inner side of the seat frame (1) is provided with a support shaft (123) that passes through the retainer (122). The outer side of the support shaft (123) is provided with a driven gear (121) located between the tooth (221) and the driving gear (231), and the driven gear (121) is located between the seat frame (1) and the retainer (122).

8. A seat cushion according to any one of claims 1 to 4, wherein The transmission component (22) has a connecting hole (222), and the rear horizontal tube (11) is disposed through the connecting hole (222).

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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