Seat framework extension assembly, seat assembly and vehicle

Abstract

The utility model relates to the technical field of vehicle interiors, and discloses a seat framework extension assembly, a seat assembly and a vehicle. The seat framework extension assembly comprises a seat basin framework; the sliding assembly is arranged on the seat basin framework; the cushion extension part is arranged on the seat basin framework in a sliding mode through a sliding assembly and is suitable for stretching out and drawing back relative to the seat basin framework to form an extension state or a contraction state, and when the cushion extension part slides to the extension state from the contraction state, the cushion extension part extends out of the seat basin framework to assist in supporting the legs of a driver and passengers. The cushion extension part is arranged on the seat basin framework in a sliding mode through the sliding assembly, when the cushion extension part slides from the contraction state to the stretching state, the cushion extension part extends out of the seat basin framework to assist in supporting the legs of a driver and passengers, the comfort level of a user is improved, the driving experience is improved, and the cushion extension part slides reversely to the contraction state when not used. A sliding adjustment mode is adopted, the structure is simple, adjustment is rapid, and the sliding distance can be conveniently adjusted to adapt to the body types of different users.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle interior decoration, and in particular to a seat frame extension component, a seat assembly and a vehicle. Background Art

[0002] The seat is an important part of the vehicle interior. It is usually composed of a seat cushion, backrest, side back support and headrest, etc. It has a certain surface shape, which is designed to match the back curve of the human body in a relaxed state to provide the best support and comfort. The design of the seat should take into account the physiological characteristics and riding habits of the human body to provide a driving and riding position that is easy to operate, comfortable and safe.

[0003] In the related art, when the driver sits in a seat, the thigh and leg support is often insufficient, resulting in discomfort and a poor user experience. Utility Model Content

[0004] In view of this, the utility model provides a seat frame extension component, a seat assembly and a vehicle to solve the problem that the seat does not provide sufficient support for the driver's thighs and legs, causing discomfort.

[0005] In a first aspect, the utility model provides a seat frame extension assembly, comprising:

[0006] Pelvis frame;

[0007] A sliding assembly, arranged on the bidet frame;

[0008] The seat cushion extension portion can be slidably set on the seat basin frame through the sliding component, and is suitable for expanding and contracting relative to the seat basin frame to form an extended state or a contracted state. When the seat cushion extension portion slides from the contracted state to the extended state, the seat cushion extension portion extends out of the seat basin frame to assist in supporting the legs of the driver and passengers.

[0009] Beneficial effect: The seat cushion extension part can be slidably arranged on the seat basin frame through a sliding component. When the seat cushion extension part slides from the contracted state to the extended state, the seat cushion extension part extends out of the seat basin frame to assist in supporting the legs of the driver and passenger, thereby improving the user's comfort and driving experience. When not in use, it can be slid in the opposite direction to the contracted state. The sliding adjustment method is simple in structure, quick in adjustment, and easy to adjust the sliding distance to suit the body shape of different users.

[0010] In an optional embodiment, the sliding assembly includes:

[0011] A driving mechanism, mounted on the seat pan frame and drivingly connected to the seat cushion extension portion; and / or

[0012] The guide mechanism is arranged between the seat basin frame and the seat cushion extension part, and is used to provide a guide limit for the sliding of the seat cushion extension part.

[0013] Beneficial effects: Providing a driving mechanism can improve the telescopic efficiency of the seat cushion extension part and also facilitate automatic control; providing a guiding mechanism can facilitate controlling the sliding direction of the seat cushion extension part; providing a driving mechanism and a guiding mechanism, and the driving mechanism installed on the seat basin frame drives the seat cushion extension part to slide back and forth. During the sliding process, the guiding mechanism is used to guide and limit the seat cushion extension part, so that the seat cushion extension part slides along the set direction, and the telescopic path is controllable.

[0014] In an optional embodiment, the guide mechanism includes a guide portion, a guide rail is provided on the seat cushion extension portion, and the guide portion is slidably matched with the guide rail.

[0015] Beneficial effect: Compared with the method of setting the sliding rail on the seat basin frame, the guide rail is set on the extended part of the seat cushion, which can save space, has higher layout flexibility, and almost does not need to change the structure of the original seat basin frame, saving time and effort.

[0016] In an optional embodiment, the guiding mechanism further includes:

[0017] The extension slider is a non-metallic part, and is disposed between the seat cushion extension portion and the seat basin frame; the guide portion is connected to the extension slider;

[0018] A slider fixing frame, the extended slider is installed on the seat basin frame through the slider fixing frame.

[0019] Beneficial effects: The non-metallic extension slider arranged between the seat cushion extension part and the seat basin frame can play a lubricating role, isolating the seat cushion extension part made of sheet metal material from the seat basin frame, reducing the sliding friction of the seat cushion extension part, and making the seat cushion extension part slide more smoothly; the setting of the slider fixing frame increases the support for the extension slider and ensures the sliding support effect.

[0020] In an optional embodiment, the driving mechanism includes:

[0021] A motor, arranged on the bidet frame;

[0022] A lead screw is arranged along the extension direction of the seat cushion extension part and is transmission-connected to the motor;

[0023] A transmission nut is arranged on the extended portion of the seat cushion and cooperates with the lead screw to form a lead screw pair.

[0024] Beneficial effects: The lead screw is connected to the motor transmission, and the transmission nut matched with the lead screw transmission is set on the seat extension part. The rotation direction of the lead screw is controlled by the forward and reverse rotation of the motor, thereby controlling the movement of the transmission nut connected to the lead screw thread. When the transmission nut moves, it drives the seat extension part fixedly connected to it to move, completing the extension and retraction of the seat extension part. The motor drive method is easy to control, and the seat extension part can stop at any position to meet the comfort requirements of different users. In addition, the lead screw pair transmission has high stability, further improving the user experience.

[0025] In an optional embodiment, in the extended state, the seat cushion extension portion is inclined at an angle to a horizontal plane.

[0026] Beneficial effects: In the stretched state, the extended part of the seat cushion is at an angle to the horizontal plane, which is adapted to the bending angle of the driver's legs when driving, thereby maximizing the contact area between the seat cushion and the legs, providing effective support for the thighs, improving the comfort of the driver and passengers, and providing a better experience.

[0027] In an optional embodiment, the seat frame extension assembly further includes:

[0028] A supporting plastic plate having a peripheral side and an end side, wherein the peripheral side of the supporting plastic plate has an open structure, and the supporting plastic plate is sleeved on the front periphery of the seat basin frame and the seat cushion extension portion through the open structure to form a semi-enclosed protective layer;

[0029] The side cover is buckled on the end side of the supporting plastic plate.

[0030] Beneficial effect: The supporting plastic plate and the side cover are arranged on the periphery of the front end of the seat basin frame and the seat cushion extension part to prevent sheet metal and bolts from scratching the seat cushion foam.

[0031] In an optional embodiment, the seat cushion extension portion includes:

[0032] An extended body is arranged on the upper side of the basin frame;

[0033] The folded edge is formed by bending one side edge of the extended body, so that the extended portion of the cushion forms an L-shaped cross section; the supporting plastic plate is installed at the folded edge.

[0034] Beneficial effect: A folding edge is arranged on one side of the extended body, so that the supporting plastic plate can be conveniently installed at the folding edge, and the installation structure is simple.

[0035] In a second aspect, the utility model further provides a seat assembly, comprising a seat frame extension component as described in any one of the above items.

[0036] Beneficial effect: The seat assembly includes the seat frame extension component of the utility model, which realizes the extension of the seat cushion and sufficient support for the legs through the extension and contraction of the seat cushion extension part, solves the problem of insufficient support for the legs of the driver and passenger by the seat cushion in the related technology, and provides a better user experience.

[0037] In a third aspect, the utility model also provides a vehicle, comprising the above-mentioned seat assembly.

[0038] Beneficial effect: The vehicle includes a seat assembly, which has the same technical effects as the seat assembly and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the related technologies, the drawings required for use in the specific implementation methods or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0040] Figure 1 A three-dimensional diagram of a seat frame extension assembly according to an embodiment of the utility model;

[0041] Figure 2 An exploded structural diagram of a seat frame extension assembly according to an embodiment of the utility model;

[0042] Figure 3 for Figure 1 Sectional view of AA in the middle;

[0043] Figure 4 This is a schematic structural diagram of the seat cushion extension part and the driving mechanism in a separated state according to an embodiment of the utility model;

[0044] Figure 5 It is a perspective structural schematic diagram of a seat frame extension assembly according to an embodiment of the utility model;

[0045] Figure 6 for Figure 5 Cross-sectional view of the middle BB;

[0046] Figure 7 A structural diagram of a seat frame extension assembly in a retracted state according to an embodiment of the utility model;

[0047] Figure 8 A structural diagram of a seat frame extension assembly in an extended state according to an embodiment of the utility model;

[0048] Fig. 9 This is a schematic diagram of a separation state of a supporting plastic plate and a side cover according to an embodiment of the utility model;

[0049] Fig.10 A three-dimensional diagram of another seat frame extension assembly according to an embodiment of the present utility model;

[0050] Fig.11 for Fig.10 Cross-sectional view of CC;

[0051] Fig.12 This is a schematic diagram of the use status of a seat according to an embodiment of the utility model, in which the dotted line of the seat cushion shows the extended supporting state of the seat frame extension component.

[0052] Description of reference numerals:

[0053] 100. Seat frame extension assembly;

[0054] 1. Pelvis frame;

[0055] 2. Slider fixing bracket;

[0056] 3. Extend the slider;

[0057] 4. Guide part;

[0058] 5. Seat cushion extension;

[0059] 51. Extend the body;

[0060] 511, guide rail; 512, yielding portion; 513, weight reduction structure;

[0061] 52. Fold edge;

[0062] 6. First fixing bolt;

[0063] 7. Lead screw;

[0064] 8. Motor;

[0065] 9. Second fixing bolt;

[0066] 10. Support plastic board;

[0067] 11. Side cover;

[0068] 12. Welding nuts;

[0069] 13. Transmission nut. DETAILED DESCRIPTION

[0070] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0071] In the description of the utility model, it should be noted that, unless otherwise specified, "multiple" means two or more; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0072] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0073] Combine the following Figures 1 to 12 , describing an embodiment of the utility model.

[0074] According to an embodiment of the present utility model, on the one hand, as Figure 1 As shown, a seat frame extension assembly 100 is provided, comprising:

[0075] Pelvis frame 1;

[0076] A sliding component is arranged on the bidet frame 1;

[0077] The seat cushion extension part 5 can be slidably arranged on the seat basin frame 1 through a sliding assembly, and is suitable for stretching relative to the seat basin frame 1 to form an extended state or a contracted state. When the seat cushion extension part 5 slides from the contracted state to the extended state, the seat cushion extension part 5 extends out of the seat basin frame 1 to assist in supporting the legs of the driver and the passenger. The contracted state and the extended state are respectively referred to Figure 7 and Figure 8As can be seen from the figure, a raised clearance portion 512 is provided at the corresponding position of the seat extension portion 5 and the motor 8, and the clearance portion 512 protrudes toward the roof direction, and the clearance portion 512 reserves installation space for the motor 8. In addition, a plurality of strip grooves are provided on the seat extension portion 5 as a weight reduction structure 513 to realize a lightweight design of the seat.

[0078] The seat cushion extension part 5 can be slidably arranged on the seat basin frame 1 through a sliding assembly. When the seat cushion extension part 5 slides from the contracted state to the extended state, the seat cushion extension part 5 extends out of the seat basin frame 1 to assist in supporting the legs of the driver and passenger, thereby improving the user's comfort and driving experience. When not in use, it can be slid in the opposite direction to the contracted state. The sliding adjustment method is simple in structure, quick in adjustment, and easy to adjust the sliding distance to adapt to the body shapes of different users.

[0079] In some embodiments, the sliding assembly includes:

[0080] The driving mechanism is installed on the seat basin frame 1 and is in transmission connection with the seat cushion extension part 5;

[0081] The guide mechanism is arranged between the seat basin frame 1 and the seat cushion extension part 5, and is used to provide a guide limit for the sliding of the seat cushion extension part 5.

[0082] The driving mechanism installed on the seat basin frame 1 drives the seat cushion extension part 5 to slide back and forth. During the sliding process, the guide mechanism guides and limits the seat cushion extension part 5 so that the seat cushion extension part 5 slides along the set direction. The telescopic path and telescopic distance are controllable.

[0083] In some other embodiments, the guiding mechanism may not be provided, and only the driving mechanism may be provided. The driving mechanism is installed on the seat basin frame 1, and the power output end of the driving mechanism is provided on the seat cushion extension part 5. Auxiliary guiding and limiting can be achieved while the driving mechanism transmits the power. The driving mechanism controls the telescopic distance and can stop at any position in the extended state as needed, thereby meeting the needs of users of different body shapes or with different requirements.

[0084] In some other embodiments, a driving mechanism may not be provided, and only a guiding mechanism may be provided. The guiding mechanism plays the role of guiding and limiting, and multiple gears may be provided. A stop structure is provided at each gear to play a stopping role. Compared with the method of not providing a stop structure, the seat cushion extension portion 5 will not slide with the movement of the person in the extended state, and the stability and reliability are higher.

[0085] In some embodiments, the guide mechanism includes a guide portion 4, a guide rail 511 is provided on the seat extension portion 5, and the guide portion 4 and the guide rail 511 are slidably matched. Figure 2 , Figure 4 , Figure 5 and Figure 7As shown, the guide rail 511 is extended along the extension direction of the seat cushion (the front-to-back direction of the vehicle body). In this embodiment, the guide rail 511 is a long waist-shaped groove, and a group is arranged on both sides of the left and right symmetric planes of the seat cushion extension portion 5, each group includes two guide rails 511 arranged in a front-to-back offset manner. The symmetrical arrangement of the guide rails 511 can improve the sliding stability, and the front-to-back offset arrangement of the two guide rails 511 in each group can prevent stress concentration.

[0086] Compared with the method of setting the sliding track on the seat frame 1, the guide rail 511 is set on the seat extension 5, which can save space, has high layout flexibility, and almost does not need to change the structure of the original seat frame 1, saving time and effort. It is inconvenient to set the sliding track on the limited space of the seat frame 1, occupies a large space, and also requires adaptive changes to the structure of the seat frame 1, which increases costs.

[0087] In an optional embodiment, if Figure 2 As shown, the guide mechanism also includes:

[0088] The extension slider 3 is a non-metallic part, and is disposed between the seat cushion extension part 5 and the seat basin frame 1; the guide part 4 is connected to the extension slider;

[0089] The slider fixing frame 2 and the extended slider 3 are installed on the basin frame 1 through the slider fixing frame 2.

[0090] The non-metallic extension slider 3 arranged between the seat cushion extension part 5 and the seat basin frame 1 can play a lubricating role, isolating the seat cushion extension part 5 made of sheet metal material from the seat basin frame 1, reducing the sliding friction of the seat cushion extension part 5, and making the seat cushion extension part 5 slide more smoothly; the setting of the slider fixing frame 2 increases the support for the extension slider 3 and ensures the sliding support effect.

[0091] It should be noted that the extension slider 3 can be made of nylon materials such as PA66. Nylon has good self-lubrication, a small friction coefficient, and excellent weather resistance, avoiding the disadvantage that high or low temperature environments have a greater impact on the properties of lubricating oil, thereby improving the durability of the extension slider 3 and extending its service life.

[0092] Specifically, Figure 3 As shown, the guide portion 4 can be a bolt assembly, and the bolt assembly as the guide portion 4 sequentially passes through the guide groove as the guide rail 511 on the seat extension portion 5, the extension slider 3 and the slider fixing frame 2, and then is threadedly connected with the welding nut 12 on the seat basin frame 1. The bolt assembly includes a fixing bolt and a gasket, and the gasket can play a role in reducing friction.

[0093] In an optional embodiment, if Figure 4 and Figure 6 As shown, the driving mechanism includes:

[0094] The motor 8 is mounted on the seat frame 1 through a second fixing bolt 9;

[0095] The lead screw 7 is arranged along the extension direction of the seat cushion extension part 5 and is transmission-connected to the motor 8;

[0096] The transmission nut 13 is mounted on the seat extension portion 5 through the first fixing bolt 6 , and the transmission nut 13 cooperates with the lead screw 7 to form a lead screw pair.

[0097] The lead screw 7 is connected to the motor 8 in transmission, and the transmission nut 13 that cooperates with the lead screw 7 in transmission is arranged on the seat extension 5. The rotation direction of the lead screw 7 is controlled by the forward and reverse rotation of the motor 8, thereby controlling the movement of the transmission nut 13 threadedly connected to the lead screw 7. When the transmission nut 13 moves, it drives the seat extension 5 fixedly connected thereto to move, thereby completing the extension and retraction of the seat extension 5. The motor 8 drive mode is adopted, which is easy to control, and the seat extension 5 can stop at any position to meet the comfort requirements of different users, and the lead screw pair has high transmission stability, further improving the user's experience.

[0098] The output end of the motor 8 is connected to the lead screw 7 through a gear, thereby driving the lead screw 7 to rotate. The rotational movement of the lead screw 7 is converted into the forward and backward translation of the transmission nut 13, and the seat extension part 5 fixedly connected to the transmission nut 13 performs a telescopic movement accordingly.

[0099] In an optional embodiment, in the extended state, the seat cushion extension portion 5 is inclined at an angle to the horizontal plane.

[0100] In the extended state, the seat cushion extension portion 5 is inclined at an angle to the horizontal plane, which is adapted to the driver's leg bending angle when driving, thereby maximizing the contact area between the seat cushion and the legs, providing effective support for the thighs, improving the comfort of the driver and passengers, and providing a better experience.

[0101] It should be noted that, in some embodiments, the seat basin frame 1 is tilted, and the seat cushion extension 5 is arranged parallel to the seat basin frame 1, and the whole is inclined at an angle to the horizontal plane, see Figure 3 and Fig.11 In some other embodiments, the seat pan frame 1 is horizontal after installation, and the seat cushion extension part 5 is directly installed on the seat pan frame 1 at an angle. In any case, it is sufficient to ensure that the inclination angle of the seat cushion extension part 5 when extended is the same as or close to the bending inclination angle of the user's thigh in a sitting or driving state.

[0102] In an optional embodiment, if Fig. 9 As shown, the seat frame extension assembly 100 also includes:

[0103] The supporting plastic plate 10 has a peripheral side and an end side. One end of the peripheral side of the supporting plastic plate 10 has an open structure. The supporting plastic plate 10 is sleeved on the front periphery of the seat basin frame 1 and the seat cushion extension part 5 through the open structure to form a semi-enclosed protective layer.

[0104] The side cover 11 is buckled on the end side of the supporting plastic plate 10 .

[0105] The supporting plastic plate 10 and the side cover 11 are arranged at the periphery of the front end of the seat pan frame 1 and the seat cushion extension 5 to prevent the sheet metal and bolts from scratching the seat cushion foam. When installing, the supporting plastic plate 10 can be installed first and then the side covers 11 at both ends can be buckled. This arrangement facilitates the installation of the supporting plastic plate 10 and improves the installation efficiency.

[0106] In an optional embodiment, the seat cushion extension portion 5 includes:

[0107] The extended body 51 is disposed on the upper side of the bidet frame 1;

[0108] The folded edge 52 is formed by bending one side edge of the extended body 51 , so that the seat extension portion 5 forms an L-shaped cross section; the supporting plastic plate 10 is installed at the folded edge 52 .

[0109] A fold edge 52 is provided on one side of the extended body 51, so that the supporting plastic plate 10 can be conveniently installed at the fold edge 52, and the installation structure is simple. Fig.11 and Fig.12 As shown, the fold edge 52 is formed by bending the edge of one side of the extended body 51 close to the vehicle head direction. Specifically, a mounting hole is provided on the fold edge 52, and the supporting plastic plate 10 is fixed to the fold edge 52 through a threaded connector.

[0110] like Figure 1 , Figure 5 , Figure 7 , Figure 8 and Fig.10 As shown, the seat cushion extension portion 5 is arranged at the front end of the seat pan frame 1. Figure 3 and Fig.11 As shown, the clearance fit between the extension slider 3 and the seat cushion extension portion 5 mainly plays a guiding role.

[0111] According to an embodiment of the present invention, on the other hand, a seat assembly is provided, comprising any one of the above seat frame extension components 100 .

[0112] See also Fig.12 The seat assembly includes the seat frame extension component 100 of the utility model. Through the extension of the seat cushion extension part 5, the extension of the seat cushion and the full support of the legs are achieved, which solves the problem of insufficient support of the legs of the driver and passenger by the seat cushion in the related art, and the user experience is better.

[0113] According to an embodiment of the present utility model, in yet another aspect, a vehicle is provided, comprising the above-mentioned seat assembly.

[0114] The vehicle includes a seat assembly, which has the same technical effects as the seat assembly and will not be described in detail here.

[0115] The utility model adds an extension component to the seat frame, and the length of the seat cushion can be adjusted, thereby providing good support for the legs of the passenger.

[0116] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A seat frame extension assembly, characterized in that: include: Pelvis frame (1); A sliding assembly, arranged on the bidet frame (1); The seat cushion extension part (5) can be slidably arranged on the seat basin frame (1) through the sliding component, and is suitable for being extended and retracted relative to the seat basin frame (1) to form an extended state or a contracted state. When the seat cushion extension part (5) slides from the contracted state to the extended state, the seat cushion extension part (5) extends out of the seat basin frame (1) to assist in supporting the legs of the driver and the passenger.

2. The seat frame extension assembly according to claim 1, characterized in that: The sliding assembly comprises: a driving mechanism, mounted on the seat pan frame (1) and drivingly connected to the seat cushion extension portion (5); and / or The guide mechanism is arranged between the seat basin frame (1) and the seat cushion extension part (5) and is used to provide a guide limit for the sliding of the seat cushion extension part (5).

3. The seat frame extension assembly according to claim 2, characterized in that: The guide mechanism comprises a guide portion (4), a guide rail (511) is arranged on the seat cushion extension portion (5), and the guide portion (4) is slidably matched with the guide rail (511).

4. The seat frame extension assembly according to claim 3, characterized in that: The guiding mechanism also includes: The extension slider (3) is a non-metallic part and is arranged between the seat cushion extension part (5) and the seat basin frame (1); the guide part (4) is connected to the extension slider (3); A slider fixing frame (2), wherein the extended slider (3) is mounted on the seat basin frame (1) via the slider fixing frame (2).

5. The seat frame extension assembly according to claim 2, characterized in that: The driving mechanism comprises: A motor (8) is arranged on the bidet frame (1); A lead screw (7) is arranged along the extension direction of the seat cushion extension portion (5) and is transmission-connected to the motor (8); A transmission nut (13) is arranged on the seat cushion extension portion (5) and cooperates with the lead screw (7) to form a lead screw pair.

6. The seat frame extension assembly according to claim 1, characterized in that: In the extended state, the seat cushion extension portion (5) is inclined at an angle to the horizontal plane.

7. The seat frame extension assembly according to any one of claims 1 to 6, characterized in that: The seat frame extension assembly also includes: The supporting plastic plate (10) has a peripheral side and an end side, the peripheral side of the supporting plastic plate (10) has an open structure, and the supporting plastic plate (10) is sleeved on the front periphery of the seat basin frame (1) and the seat cushion extension part (5) through the open structure to form a semi-enclosed protective layer; The side cover (11) is buckled onto the end side of the supporting plastic plate (10).

8. The seat frame extension assembly according to claim 7, characterized in that: The seat cushion extension portion (5) comprises: An extended body (51) is arranged on the upper side of the bidet frame (1); The folded edge (52) is formed by bending one side edge of the extended body (51), so that the seat cushion extension part (5) forms an L-shaped cross section; the supporting plastic plate (10) is installed at the folded edge (52).

9. A seat assembly, characterized in that: The invention comprises a seat frame extension assembly (100) according to any one of claims 1 to 8.

10. A vehicle, characterized in that: Includes the seat assembly described in claim 9.

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