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 arm, a transmission block and a driving piece, the lifting piece is hinged to the seat cushion framework, the seat cushion framework is provided with a supporting groove, the transmission block is slidingly connected to the supporting groove, the transmission arm is arranged at an angle with the extending direction of the supporting groove, one end of the transmission arm is hinged to the lifting piece, the other end of the transmission arm is hinged to the transmission block, the driving piece is arranged on the seat cushion framework and is provided with a driving end, the driving end is connected to the transmission block, and the driving piece can drive the transmission block to move along the extending direction of the supporting groove, so that the lifting piece rotates around the hinged end under the action of the transmission arm, thereby improving the lifting load of the lifting mechanism under the premise that the power of the driving piece remains unchanged, and further increasing the stability of the lifting function of the rear end of the seat cushion.

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 raises the rear of the seat cushion, 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 fall into two categories: one is a linked lifting mechanism that works in conjunction with the backrest, automatically raising the rear of the seat cushion as the backrest is folded down; the other is an independent lifting mechanism that rotates relative to the seat cushion frame. This mechanism uses the rotation of a lifting rod to push the seat cushion filling, thereby raising the rear of the seat cushion. Because the linked lifting mechanism relies on the movement of the backrest, it cannot independently raise the rear of the seat cushion, resulting in limited flexibility. This makes the independent lifting mechanism more commonly used. Widely applicable; however, because the lifting rod of an independent lifting mechanism generally uses a drive component to directly drive the seat cushion filling, the force on the lifting rod will directly act on the drive component. This results in a large load on the drive component. When a heavier passenger sits on the seat and the rear of the seat cushion is lifted by the independent lifting mechanism, the drive component may be too weak to drive the lifting rod, thus failing to lift the rear of the seat cushion. This may also damage the drive component, thereby affecting the stability of the rear seat cushion lifting function. Utility Model Content

[0005] This application provides a seat cushion to increase the stability of the rear end lifting function of the seat cushion.

[0006] 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 arm, a transmission block, and a driving member. The lifting member has a hinged end hinged to the seat cushion frame and a lifting end opposite to the hinged end. The seat cushion frame has a support groove extending from its front end to its rear end. The transmission block is slidably connected to the support groove. The transmission arm is set at an angle to the extending direction of the support groove, and its two ends are respectively hinged to the lifting member and the transmission block. The driving member is disposed in the seat cushion frame and has a driving end connected to the transmission block. The driving member can drive the transmission block to move along the extending direction of the support groove, so that the lifting member rotates around the hinged end under the action of the transmission arm.

[0007] By adopting the above technical solution, when lifting the rear end of the seat cushion, the drive component is activated, which in turn drives the transmission block. The transmission block moves along the extension direction of the support groove and slides relative to the support groove. At the same time, the transmission block drives the transmission arm to move, so that the transmission arm and the transmission block rotate relative to each other. The transmission arm applies an upward force to the lifting component and moves relative to the lifting component, thereby causing the lifting component to rotate around the hinge end, so that the lifting component lifts the seat cushion filling upward, thereby realizing the lifting of the rear end of the seat cushion.

[0008] Since the transmission block is slidably connected to the support groove, when the driving component drives the transmission block, the groove wall of the support groove can guide the transmission block, so that the transmission block can only move along the extension direction of the support groove, so as to ensure that the lifting component can rotate around the hinge end under the action of the transmission arm when the transmission block moves.

[0009] Furthermore, since one end of the transmission arm is hinged to the transmission block, and the driving end of the drive component is connected to the transmission block, the force borne by the transmission arm is transmitted to the drive component through the transmission block. Also, since the transmission arm and the extension direction of the support groove are set at an angle, the force borne by the transmission arm can be decomposed into a component force along the plumb line and a component force along the extension direction of the support groove. The component force along the plumb line acts directly on the transmission block, utilizing the groove wall of the support groove to support the transmission block. The component force along the extension direction of the support groove is transmitted to the drive component through the transmission block. Therefore, when the drive component drives the lifting component through the transmission block and transmission arm, it only needs to overcome the component force of the transmission arm along the extension direction of the support groove, thus reducing the load on the drive component. Therefore, compared to the direct-drive method used in the prior art, the technical solution in this application can increase the lifting load of the lifting mechanism while ensuring the power of the drive component remains unchanged. It minimizes the possibility of the lifting mechanism being unable to lift the rear end of the seat cushion due to insufficient power of the drive component, and also avoids situations where the drive component is easily damaged, thereby increasing the stability of the rear end lifting function of the seat cushion.

[0010] Optionally, the seat cushion further includes a support plate, which is disposed on the seat cushion frame, the hinge end is hinged to the support plate, and the support groove is disposed on the support plate.

[0011] By adopting the above technical solution, since the hinge end is hinged to the support plate and the support groove is located on the support plate, it can facilitate the installation of the transmission block and lifting component, increase the stability of the transmission block and lifting component, and ensure the structural strength of the seat cushion frame compared to the solution of directly connecting the lifting component and transmission block to the seat cushion frame, which requires opening holes and support grooves in the seat cushion frame. This also ensures the load-bearing capacity of the seat cushion frame. Furthermore, since the support plate is located on the seat cushion frame, the structural strength of the seat cushion frame can be increased by the support plate, thereby further increasing the load-bearing capacity of the seat cushion frame.

[0012] Optionally, the support plate has an extension located at the bottom of the seat cushion frame, and the support groove is disposed in the extension.

[0013] By adopting the above technical solution, since the extension section is located at the bottom of the seat cushion frame and the support groove is located in the extension section, the transmission block is located at the bottom of the seat cushion frame, so that the driving component can be arranged at the bottom of the seat cushion frame. This allows for the rational use of the bottom space of the seat cushion frame, thereby improving the space utilization rate of the seat cushion. At the same time, it also allows the driving component and the transmission block to avoid contact with the seat cushion filling material located in the seat cushion frame, thus ensuring the passenger's riding comfort.

[0014] Optionally, the support plate has an abutting section that rests against the top of the seat cushion frame and a positioning section located at the bottom of the seat cushion frame, the positioning section abutting against the seat cushion frame.

[0015] By adopting the above technical solution, since the support plate has an abutment section that rests against the top of the seat cushion frame and a positioning section located at the bottom of the seat cushion frame, the abutment section can be used to support the support plate, so as to facilitate the subsequent fixing and connection of the support plate to the seat cushion frame, thereby improving the assembly efficiency of the support plate. At the same time, the abutment section and the positioning section can be used in conjunction with the seat cushion frame to position the installation position of the support plate, which can reduce the assembly difficulty of the support plate and increase the accuracy of the support plate installation.

[0016] Optionally, the lifting member has a hinge lug located between the hinge end and the lifting end, and the transmission arm is hinged to the hinge lug.

[0017] By adopting the above technical solution, since the transmission arm is hinged to the hinge ear, and the hinge ear is located between the hinge end and the lifting end, the distance between the hinge position of the transmission arm and the lifting member and the hinge position of the lifting member and the seat frame can be increased, so as to further reduce the force required to drive the lifting member to rotate, thereby further reducing the load of the driving member, and thus further increasing the lifting load of the lifting mechanism.

[0018] Optionally, the transmission block is provided with a stepped bolt, the bolt head diameter of which is greater than the width of the support groove, and the stepped bolt passes through the transmission arm and the drive end.

[0019] By adopting the above technical solution, since the stepped bolts are installed in the transmission arm and the drive end, the transmission arm and the drive end can be hinged to the transmission block. Since the bolt head diameter of the stepped bolt is larger than the width of the support groove, the stepped bolts can also be used to block the transmission block to prevent the transmission block from separating from the support groove, thereby increasing the connection stability between the transmission block and the support groove.

[0020] Optionally, the transmission arm is located on the side of the drive end near the bolt head of the stepped bolt, and a threaded sleeve is provided on the side of the drive end away from the transmission arm, and the stepped bolt is threadedly connected to the threaded sleeve.

[0021] By adopting the above technical solution, the stepped bolt is fixed by the threaded sleeve, thereby increasing the stability of the stepped bolt; and since the transmission arm is located on the side of the drive end close to the bolt head of the stepped bolt, the connection stability between the transmission arm and the transmission block is increased, so as to ensure the stability of the rear end lifting function of the seat cushion.

[0022] Optionally, the seat cushion further includes a support plate, the support groove is disposed on the support plate, and an isolator is provided between the support plate and the transmission arm.

[0023] By adopting the above technical solution, since an isolator is provided between the support plate and the transmission arm, the transmission arm and the support plate can be isolated by the isolator, so that there is a gap between the transmission arm and the support plate, thereby avoiding the situation where the transmission arm and the support plate are in direct contact and easily generate abnormal noise, thus improving the passenger riding experience.

[0024] This application also discloses a seat to increase the stability of the seat cushion rear end lifting function.

[0025] A chair, including a backrest and a seat cushion as described above.

[0026] By adopting the above technical solution, since the seat in this application uses the aforementioned seat cushion, the load on the drive component is reduced. This increases the lifting load of the lifting mechanism while ensuring that the power of the drive component remains unchanged, thus avoiding situations where the rear end of the seat cushion cannot be lifted due to the passenger's large weight or where the drive component may be damaged. This, in turn, increases the stability of the rear end lifting function of the seat cushion.

[0027] This application also discloses a vehicle designed to improve the user experience.

[0028] A vehicle comprising a seat cushion or a seat as described above.

[0029] By adopting the above technical solution, since the vehicle in this application uses the above-mentioned seat cushion or seat, the lifting load of the lifting mechanism can be increased without changing the power of the drive component, so that when a heavier passenger sits in the vehicle, the rear end of the seat cushion can still be lifted normally, thereby improving the user experience.

[0030] 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 arm, a transmission block, and a driving member. The lifting member has a hinge end hinged to the seat cushion frame and a lifting end opposite to the hinge end. The seat cushion frame has a support groove extending from its front end to its rear end. The transmission block is slidably connected to the support groove. The extension direction of the transmission arm is set at an angle to the extension direction of the support groove, and both ends of the transmission arm are respectively hinged to the lifting member and the transmission block. The driving member is located in the seat cushion frame and has a driving end connected to the transmission block. The driving member can drive the transmission block to move along the extension direction of the support groove, so that the lifting member rotates around the hinge end under the action of the transmission arm. This reduces the load on the driving member and increases the lifting load of the lifting mechanism while ensuring that the power of the driving member remains unchanged. This avoids the situation where the lifting mechanism cannot lift the rear end of the seat cushion due to the low power of the driving member and the driving member is easily damaged, thereby increasing the stability of the rear end lifting function of the seat cushion.

[0031] 2. The seat cushion in this application also includes a support plate, which is disposed on the seat cushion frame. The hinge end is hinged to the support plate, and the support groove is disposed on the support plate. This facilitates the installation of the transmission block and the lifting component, increases the stability of the transmission block and the lifting component, and, compared to the solution of directly connecting the lifting component and the transmission block to the seat cushion frame, which requires opening holes and support grooves in the seat cushion frame, ensures the structural strength of the seat cushion frame and guarantees its load-bearing capacity.

[0032] 3. The support plate in this application has an extension section located at the bottom of the seat cushion frame, and a support groove is provided in the extension section, thereby causing the transmission block to be located at the bottom of the seat cushion frame, so that the drive component can be arranged at the bottom of the seat cushion frame, thereby making reasonable use of the bottom space of the seat cushion frame to improve the space utilization rate of the seat cushion. At the same time, it also allows the drive component and the transmission block to avoid the seat cushion filling material located in the seat cushion frame, so as to ensure the passenger's riding comfort. Attached Figure Description

[0033] 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; Figure 3 This is a partial structural cross-sectional view of the seat cushion described in one embodiment of this application; Figure 4 This is an exploded schematic diagram of the lifting mechanism described in one embodiment of this application; Figure 5 This is a schematic diagram of the lifting mechanism described in one embodiment of this application, mainly showing the lifting member in the lifting position; Figure 6 This is a schematic diagram of the lifting mechanism described in one embodiment of this application, mainly showing the lifting member in its initial position; Figure 7 This is a schematic diagram of the lifting mechanism described in one embodiment of the present application from another perspective, mainly showing the lifting member in its initial position; Figure 8 This is a schematic diagram of the structure of the support plate described in one embodiment of this application.

[0034] Figure label: 1. Seat cushion frame; 11. Mounting base; 12. Mounting plate; 13. Front cross tube; 14. Rear cross tube; 2. Lifting mechanism; 21. Lifting component; 211. Connecting ear; 212. Hinge ear; 22. Drive arm; 221. Isolator; 23. Drive block; 231. Step bolt; 24. Drive component; 241. Electric lead screw; 242. Drive arm; 3. Support plate; 31. Extension section; 311. Support groove; 32. Alignment section; 33. Positioning section; 34. Recessed part. Detailed Implementation

[0035] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] Reference Figures 1 to 8A 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 arm 22, a transmission block 23, and a driving member 24. The lifting member 21 has a hinge end hinged to the seat cushion frame 1 and a lifting end opposite to the hinge end. The seat cushion frame 1 has a support groove 311 extending from its front end to its rear end. The transmission block 23 is slidably connected to the support groove 311. The transmission arm 22 is set at an angle to the extension direction of the support groove 311, and both ends of the transmission arm 22 are respectively hinged to the lifting member 21 and the transmission block 23. The driving member 24 is disposed on the seat cushion frame 1 and has a driving end connected to the transmission block 23. The driving member 24 can drive the transmission block 23 to move along the extension direction of the support groove 311, so that the lifting member 21 rotates around the hinge end under the action of the transmission arm 22.

[0041] It is understood that the aforementioned "seat cushion frame 1 has a support groove 311 extending from its front end to its rear end" means that the support groove 311 extends from the front end of the seat cushion frame 1 to the rear end of the seat cushion frame 1, or the support groove 311 extends from the rear end of the seat cushion frame 1 to the front end of the seat cushion frame 1, that is, the extension direction of the support groove 311 is parallel to the front-rear direction of the seat cushion frame 1; the lifting member 21 has an initial position and a raised position above the initial position. The lifting member 21 can move between the initial position and the raised position under the action of the driving member 24, the transmission block 23 and the transmission arm 22. When the lifting member 21 is in the raised position, the lifting end can push the rear end of the seat cushion filling upward so that the rear end of the seat cushion filling moves upward, thereby eliminating or reducing the height difference between the rear end of the seat cushion and the backrest.

[0042] When the rear end of the seat cushion is lifted, the drive unit 24 is activated, which in turn drives the transmission block 23. The transmission block 23 moves along the extension direction of the support groove 311 and slides relative to the support groove 311. At the same time, the transmission block 23 drives the transmission arm 22 to move, so that the transmission arm 22 and the transmission block 23 rotate relative to each other. The transmission arm 22 applies an upward force to the lifting member 21 and moves relative to the lifting member 21, thereby causing the lifting member 21 to rotate around the hinge end, so that the lifting member 21 lifts the seat cushion filling upward, thereby realizing the lifting of the rear end of the seat cushion.

[0043] Since the transmission block 23 is slidably connected to the support groove 311, when the driving member 24 drives the transmission block 23, the groove wall of the support groove 311 can guide the transmission block 23, so that the transmission block 23 can only move along the extension direction of the support groove 311, so as to ensure that the lifting member 21 can rotate around the hinge end under the action of the transmission arm 22 when the transmission block 23 moves.

[0044] Since one end of the transmission arm 22 is hinged to the transmission block 23, and the driving end of the driving member 24 is hinged to the transmission block 23, the force borne by the transmission arm 22 is transmitted to the driving member 24 through the transmission block 23. Furthermore, since the transmission arm 22 is set at an angle to the extending direction of the support groove 311, the force borne by the transmission arm 22 can be decomposed into a component force along the plumb line and a component force along the extending direction of the support groove 311. The component force along the plumb line acts directly on the transmission block 23, using the groove wall of the support groove 311 to support the transmission block 23, while the component force along the extending direction of the support groove 311 is transmitted to the driving member through the transmission block 23. 24, so that when the drive member 24 drives the lifting member 21 through the transmission block 23 and the transmission arm 22, it only needs to overcome the component force of the transmission arm 22 along the extension direction of the support groove 311, thereby reducing the load on the drive member 24; therefore, compared with the direct drive method in the prior art, the technical solution in this application can increase the lifting load of the lifting mechanism 2 while ensuring that the power of the drive member 24 remains unchanged, and avoid the situation that the lifting mechanism 2 cannot lift the rear end of the seat cushion due to the low power of the drive member 24 and the drive member 24 is prone to damage, thereby increasing the stability of the rear end lifting function of the seat cushion.

[0045] This application does not specifically limit the structure of the lifting member 21; preferably, refer to... Figure 1 , Figure 4 and Figure 6 The lifting member 21 is a C-shaped rod. One end of the C-shaped rod has an opening and forms the hinge end of the lifting member 21. The other end of the C-shaped rod forms the lifting end of the lifting member 21. Both sides of the open end of the C-shaped rod are hinged to the seat cushion frame 1 to increase the hinge stability between the lifting member 21 and the seat cushion frame 1. In other embodiments, the lifting member 21 may also include a transmission rod and a push rod. One end of the transmission rod forms the hinge end of the lifting member 21 and is hinged to the seat cushion frame 1. The push rod is vertically fixed to the other end of the transmission rod and forms the lifting end of the lifting member 21. That is, the transmission rod and the push rod together form a T-shaped structure.

[0046] This application does not specifically limit the structure of the drive component 24; preferably, refer to... Figures 5 to 7 The drive unit 24 includes an electric lead screw 241 and a drive arm 242. The electric lead screw 241 has a servo motor, a lead rod that is driven by the output shaft of the servo motor, and a slider that is threaded to the lead rod. The drive arm 242 is fixedly connected to the slider, and the end of the drive arm 242 away from the servo motor is connected to the transmission block 23 and constitutes the drive end of the drive unit 24.

[0047] Specifically, when lifting the rear end of the seat cushion, the output shaft of the servo motor rotates in the first direction, causing the lead screw to rotate with the output shaft of the servo motor. This causes the lead screw and the slider to rotate relative to each other. At the same time, the slider drives the drive arm 242 to move away from the servo motor along the axial direction of the lead screw. This causes the drive arm 242 to push the transmission block 23 away from the servo motor. The transmission block 23 slides relative to the support groove 311 and moves towards the rear end of the seat cushion, causing the transmission block 23 to push the transmission arm 22. The transmission arm 22 rotates relative to the transmission block 23 and the lifting member 21. At the same time, the transmission arm 22 pushes the lifting member 21 upward, causing the lifting end of the lifting member 21 to rotate upward around the hinge end and push the rear end of the seat cushion filling, thereby lifting the rear end of the seat cushion.

[0048] When the rear end of the seat cushion is lowered, the output shaft of the servo motor rotates in a second direction opposite to the first direction, so that the slider drives the drive arm 242 to move towards the direction of the servo motor under the action of the lead screw. This causes the transmission block 23 to move towards the front end of the seat cushion under the action of the transmission arm 22, so that the transmission arm 22 applies a downward pulling force to the lifting member 21 under the pulling action of the transmission block 23. This causes the lifting end of the lifting member 21 to rotate downward around the hinge end and causes the rear end of the seat cushion filling to gradually descend under the action of its own elastic force, thereby achieving the descent of the rear end of the seat cushion.

[0049] This application does not specify the connection method between the servo motor and the seat frame 1, or the connection method between the drive arm 242 and the transmission block 23. Preferably, refer to Figure 2 , Figure 3 , Figure 5 and Figure 6 The seat cushion frame 1 is provided with a mounting base 11. The servo motor is hinged to the mounting base 11 via a hinge shaft, that is, the servo motor is hinged to the seat cushion frame 1. The drive arm 242 is hinged to the transmission block 23. The hinge axis between the drive arm 242 and the transmission block 23, as well as the hinge axis between the servo motor and the mounting base 11, are all parallel to the hinge axis of the lifting member 21. This avoids the situation where the moving direction of the drive arm 242 cannot be parallel to the sliding direction of the transmission block 23 due to installation errors of the drive member 24. This ensures the smooth movement of the transmission block 23 and reduces the installation accuracy requirements of the drive member 24, thus facilitating the assembly of the drive member 24. In other embodiments, the servo motor can also be fixedly connected to the seat cushion frame 1, and the drive arm 242 can be fixedly connected to the transmission block 23.

[0050] In other embodiments, the drive element 24 may also be a cylinder or electric cylinder or other structure capable of driving the transmission block 23 to slide along the extension direction of the support groove 311.

[0051] This application does not specify the hinge method between the hinge end and the seat cushion frame 1, nor the location of the support groove 311. Preferably, refer to... Figure 2 , Figure 4 , Figure 6 and Figure 7 The seat cushion also includes a support plate 3, which is located on the seat cushion frame 1. The hinge end is hinged to the support plate 3, and the support groove 311 is located on the support plate 3.

[0052] It is understood that the support plate 3 is fixedly connected to the seat cushion frame 1, and the lifting member 21 is hinged to the seat cushion frame 1 through the support plate 3; the support groove 311 passes through the support plate 3 in the thickness direction of the support plate 3.

[0053] Since the hinge end is hinged to the support plate 3 and the support groove 311 is provided on the support plate 3, it can facilitate the installation of the transmission block 23 and the lifting member 21, and increase the stability of the transmission block 23 and the lifting member 21. Furthermore, compared with the solution of directly connecting the lifting member 21 and the transmission block 23 to the seat frame 1, which requires opening holes and support groove 311 in the seat frame 1, it can also ensure the structural strength of the seat frame 1 to ensure the load-bearing capacity of the seat frame 1. Since the support plate 3 is provided on the seat frame 1, the structural strength of the seat frame 1 can also be increased by the support plate 3 to further increase the load-bearing capacity of the seat frame 1.

[0054] The better one is to refer to Figure 6 The support plate 3 is located on one side of the hinge end, and one side of the hinge end is hinged to the support plate 3. The seat cushion frame 1 is provided with a mounting plate 12 located on the other side of the hinge end, and the other side of the hinge end is hinged to the mounting plate 12. The mounting plate 12 is fixedly connected to the seat cushion frame 1 to increase the connection stability between the lifting member 21 and the seat cushion frame 1. At the same time, the support plate 3 and the mounting plate 12 can be used to limit the movement of the lifting member 21 in the width direction of the seat cushion to increase the stability of the lifting member 21.

[0055] The better one is to refer to Figure 4 and Figure 5 Both sides of the hinge end are provided with connecting ears 211. The two connecting ears 211 are respectively provided for the support plate 3 and the mounting plate 12. Each connecting ear 211 is hinged to its corresponding support plate 3 or mounting plate 12 by bolt pair, so as to facilitate the installation of the lifting component 21.

[0056] Preferably, the connecting ear 211 is L-shaped, with one end of the connecting ear 211 located at the bottom of the lifting member 21, and the other end of the connecting ear 211 located on the side of the hinge end and extending upward. The hinge end has a connecting plane, which is fixedly connected to the end of the connecting ear 211 located at the bottom of the lifting member 21 to increase the connection stability between the connecting ear 211 and the lifting member 21.

[0057] Furthermore, refer to Figure 7 and Figure 8 The support plate 3 has an extension 31 located at the bottom of the seat cushion frame 1. The support groove 311 is provided in the extension 31, which makes the transmission block 23 located at the bottom of the seat cushion frame 1, so that the drive member 24 can be arranged at the bottom of the seat cushion frame 1. This allows for reasonable use of the bottom space of the seat cushion frame 1, thereby improving the space utilization rate of the seat cushion. At the same time, it also allows the drive member 24 and the transmission block 23 to avoid the seat cushion filling material provided in the seat cushion frame 1, so as to ensure the passenger's riding comfort.

[0058] Furthermore, refer to Figure 7 and Figure 8 The support plate 3 has an abutting section 32 that rests against the top of the seat cushion frame 1 and a positioning section 33 located at the bottom of the seat cushion frame 1, with the positioning section 33 abutting against the seat cushion frame 1.

[0059] It is understandable that both the abutment section 32 and the positioning section 33 are located on the side of the support plate 3 away from the lifting member 21.

[0060] Since the support plate 3 has an abutment section 32 that rests against the top of the seat cushion frame 1 and a positioning section 33 located at the bottom of the seat cushion frame 1, the abutment section 32 can be used to support the support plate 3, so as to facilitate the subsequent fixing and connection of the support plate 3 to the seat cushion frame 1, thereby improving the assembly efficiency of the support plate 3. At the same time, the abutment section 32 and the positioning section 33 can be used to position the installation position of the support plate 3 in cooperation with the seat cushion frame 1, which can reduce the assembly difficulty of the support plate 3 and increase the accuracy of the installation of the support plate 3.

[0061] Furthermore, refer to Figure 7 and Figure 8 The support plate 3 is provided with a recessed portion 34. The recessed portion 34 is recessed towards the side away from the lifting member 21 and contacts the inner wall of the seat frame 1. On the one hand, the recessed portion 34 can increase the structural strength of the support plate 3, and on the other hand, the recessed portion 34 can support the support plate 3 to increase the support stability of the support plate 3 for the lifting member 21.

[0062] This application does not specify a particular method for fixing the support plate 3 to the seat cushion frame 1. Preferably, the support plate 3 is fixedly connected to the seat cushion frame 1 by welding to increase the connection stability between the support plate 3 and the seat cushion frame 1. In other embodiments, the support plate 3 can also be fixed to the seat cushion frame 1 by screws or rivets.

[0063] In other embodiments, the support plate 3 can be omitted, and the hinged end of the lifting member 21 can be directly hinged to the seat frame 1 by bolts; the support groove 311 can be directly set on the seat frame 1, or other structures that can slide with the transmission block 23 can be set on the seat frame 1, such as a slide rail with a groove structure.

[0064] This application does not specify the connection position between the lifting components 21 and 21; preferably, refer to Figure 6 The lifting member 21 has a hinge ear 212, which is located between the hinge end and the lifting end, and the transmission arm 22 is hinged to the hinge ear 212.

[0065] It is understandable that the hinge ear 212 is fixedly connected to the bottom of the lifting member 21, and the end of the transmission arm 22 away from the transmission block 23 is hinged to the hinge ear 212 through the hinge shaft or bolt pair.

[0066] Since the transmission arm 22 is hinged to the hinge ear 212, and the hinge ear 212 is located between the hinge end and the lifting end, the distance between the hinge position of the transmission arm 22 and the lifting member 21 and the hinge position of the lifting member 21 and the seat frame 1 can be increased, so as to further reduce the force required to drive the lifting member 21 to rotate, thereby further reducing the load on the drive member 24, and thus further increasing the lifting load of the lifting mechanism 2.

[0067] In other embodiments, the hinge ear 212 may be provided at the hinge end of the lifting member 21, and the hinge ear 212 may be located at the bottom of the lifting member 21.

[0068] This application does not specify the hinge method between the transmission arm 22 and the drive end and the transmission block 23. Preferably, refer to Figure 4 and Figure 7 The transmission block 23 is provided with a stepped bolt 231. The bolt head diameter of the stepped bolt 231 is larger than the width of the support groove 311, and the stepped bolt 231 is provided in the transmission arm 22 and the drive end.

[0069] It should be noted that the width of the support groove 311 refers to the dimension of the support groove 311 in the direction perpendicular to its extension.

[0070] Since the stepped bolt 231 passes through the transmission arm 22 and the drive end, the transmission arm 22 and the drive end can be hinged to the transmission block 23. Since the bolt head diameter of the stepped bolt 231 is larger than the width of the support groove 311, the stepped bolt 231 can also be used to block the transmission block 23 to prevent the transmission block 23 from separating from the support groove 311, thereby increasing the connection stability between the transmission block 23 and the support groove 311.

[0071] This application does not specify the fixing method of the step bolt 231. Preferably, the transmission arm 22 is located on the side of the drive end close to the bolt head of the step bolt 231, and a threaded sleeve is provided on the side of the drive end away from the transmission arm 22, and the step bolt 231 is threadedly connected to the threaded sleeve.

[0072] It is understandable that the transmission block 23, the transmission arm 22 and the drive end are all provided with hole structures for the step bolt 231 to pass through. The screw of the step bolt 231 passes through the transmission block 23, the transmission arm 22 and the drive end in sequence and is threadedly connected to the threaded sleeve. The threaded sleeve is fixedly connected to the drive end, that is, the threaded sleeve is fixedly connected to the drive arm 242.

[0073] Since the stepped bolt 231 is threadedly connected to the threaded sleeve, the stepped bolt 231 is fixed, thereby increasing the stability of the stepped bolt 231. At the same time, since the threaded sleeve is located at the drive end, it also facilitates the installation of the stepped bolt 231, thereby improving the installation efficiency of the stepped bolt 231. Furthermore, since the transmission arm 22 is located on the drive end near the bolt head of the stepped bolt 231, the connection stability between the transmission arm 22 and the transmission block 23 is increased, thereby ensuring the stability of the rear end lifting function of the seat cushion.

[0074] In other embodiments, the stepped bolt 231 is threaded with a nut located on the side of the drive end away from the transmission arm 22, so as to achieve the same purpose of fixing the stepped bolt 231.

[0075] Furthermore, refer to Figure 4 The seat cushion also includes a support plate 3, a support groove 311 is provided on the support plate 3, and an isolator 221 is provided between the support plate 3 and the transmission arm 22. The isolator 221 can be used to isolate the transmission arm 22 from the support plate 3 so that there is a gap between the transmission arm 22 and the support plate 3, thereby avoiding the situation where the transmission arm 22 and the support plate 3 are in direct contact and are prone to abnormal noise, thus improving the passenger's riding experience.

[0076] This application does not specify the material for the isolator 221. Preferably, the isolator 221 is made of plastic material. This can prevent abnormal noise caused by friction between the transmission arm 22 and the support plate 3, and can also reduce the manufacturing cost of the isolator 221. In other embodiments, the isolator 221 can also be made of materials such as rubber or nylon.

[0077] Preferably, the isolator 221 includes a first section and a second section. The end face of the first section is used to contact the end face of the support plate 3, and the end face of the second section is used to contact the end face of the transmission arm 22. The diameter of the first section is greater than the width of the support groove 311, and the diameter of the second section is smaller than the diameter of the first section but larger than the diameter of the hole structure on the transmission arm 22. This increases the stability of the isolator 221 between the support plate 3 and the transmission arm 22 while reducing the manufacturing cost of the isolator 221.

[0078] In other embodiments, the transmission block 23 is provided with two hinge points at intervals along its sliding direction. One hinge point is used to connect to the drive end, and the other hinge point is used to connect to the transmission arm 22. That is, the transmission block 23 is provided with two stepped bolts 231 or two hinge shafts, and the two stepped bolts 231 or two hinge shafts are respectively connected to the drive end and the transmission arm 22.

[0079] In a preferred embodiment, the seat cushion further includes a seat cushion filler disposed on the seat cushion frame 1, the seat cushion filler being located above the seat cushion frame 1, so that when the passenger sits on the seat cushion, the passenger is in direct contact with the seat cushion filler, thereby increasing the passenger's riding comfort.

[0080] In a preferred embodiment, the seat cushion frame 1 has a front cross tube 13 located at the front of the seat cushion frame 1 and a rear cross tube 14 located at the rear of the seat cushion frame 1. The lifting mechanism 2 is located between the front cross tube 13 and the rear cross tube 14, and the lifting end of the lifting member 21 is located on the side of the hinge end away from the front cross tube 13. The seat cushion also includes a seat cushion suspension spring located at the bottom of the seat cushion filling. The front end of the seat cushion suspension spring is hooked to the front cross tube 13, and the rear end of the seat cushion suspension spring is hooked to the lifting end of the lifting member 21, so that the seat cushion suspension spring supports the seat cushion filling, thereby ensuring the support effect of the seat cushion filling on the passenger and further increasing the passenger's riding experience.

[0081] This application also discloses a seat, which includes a backrest and a seat cushion as described above.

[0082] Because the seat in this application uses the aforementioned seat cushion, the load on the drive component 24 is reduced. This increases the lifting load of the lifting mechanism 2 while ensuring that the power of the drive component 24 remains unchanged. This avoids situations where the passenger's weight is too large to lift the rear end of the seat cushion and could damage the drive component 24, thereby increasing the stability of the rear end lifting function of the seat cushion.

[0083] This application also discloses a vehicle that includes a seat cushion or a seat as described above.

[0084] Because the vehicle in this application uses the aforementioned seat cushion or seat, the lifting load of the lifting mechanism 2 is increased without changing the power of the drive component 24, so that the rear end of the seat cushion can still be lifted normally when a heavier passenger sits in the vehicle, thereby improving the user experience.

[0085] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0086] 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.

[0087] 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 lifting mechanism (2) includes a lifting member (21), a transmission arm (22), a transmission block (23), and a driving member (24). The lifting member (21) has a hinge end that is hinged to the seat frame (1) and a lifting end opposite to the hinge end. The seat frame (1) has a support groove (311) extending from its front end to its rear end. The transmission block (23) is slidably connected to the support groove (311). The transmission arm (22) is connected to the seat frame (1). The extension direction of the support groove (311) is set at an angle, and the two ends of the transmission arm (22) are respectively hinged to the lifting member (21) and the transmission block (23). The driving member (24) is provided on the seat frame (1) and has a driving end connected to the transmission block (23). The driving member (24) can drive the transmission block (23) to move along the extension direction of the support groove (311) so that the lifting member (21) rotates around the hinge end under the action of the transmission arm (22).

2. A seat cushion according to claim 1, characterized in that, The seat cushion also includes a support plate (3), which is disposed on the seat cushion frame (1), the hinge end is hinged to the support plate (3), and the support groove (311) is disposed on the support plate (3).

3. A seat cushion according to claim 2, characterized in that, The support plate (3) has an extension (31) located at the bottom of the seat frame (1), and the support groove (311) is provided in the extension (31).

4. A seat cushion according to claim 2, characterized in that, The support plate (3) has an abutting section (32) that rests against the top of the seat cushion frame (1) and a positioning section (33) located at the bottom of the seat cushion frame (1), the positioning section (33) abutting against the seat cushion frame (1).

5. A seat cushion according to any one of claims 1-4, characterized in that, The lifting member (21) has a hinge ear (212) located between the hinge end and the lifting end, and the transmission arm (22) is hinged to the hinge ear (212).

6. A seat cushion according to any one of claims 1-4, characterized in that, The transmission block (23) is provided with a stepped bolt (231), the bolt head diameter of which is greater than the width of the support groove (311), and the stepped bolt (231) is provided in the transmission arm (22) and the drive end.

7. A seat cushion according to claim 6, characterized in that, The transmission arm (22) is located on the side of the drive end near the bolt head of the stepped bolt (231). A threaded sleeve is provided on the side of the drive end away from the transmission arm (22), and the stepped bolt (231) is threadedly connected to the threaded sleeve.

8. A seat cushion according to claim 7, characterized in that, The seat cushion also includes a support plate (3), the support groove (311) is provided on the support plate (3), and an isolator (221) is provided between the support plate (3) and the transmission arm (22).

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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