Electric folding type seat framework and vehicle

Abstract

The utility model provides an electric folding type seat framework and a vehicle, and relates to the technical field of vehicle parts, the electric folding type seat framework comprises a backrest framework, a seat cushion framework, an adjusting mechanism and an electric folding mechanism, one end of the seat cushion framework is rotatably connected with the backrest framework through the adjusting mechanism, and the other end of the seat cushion framework is rotatably connected with the electric folding mechanism; one end of the adjusting mechanism is connected with the backrest framework, the other end of the adjusting mechanism is connected with the supporting surface through the electric folding mechanism, the adjusting mechanism is used for adjusting the folding angle of the backrest framework and locking the backrest framework at the current folding angle, and the electric folding mechanism is used for adjusting the folding angle of the seat cushion framework and locking the seat cushion framework at the current folding angle. Therefore, the seat can realize the function of forming a bed by the seat, or the function of forming a bed by a trunk and the function of storing a storage space of an oversized trunk, and the seat cushion can be automatically turned over, so that the turning operation of the seat is simple and convenient, and the automation degree is high.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle parts, and in particular, to an electric folding seat frame and a vehicle. Background Art

[0002] With the rapid development of the automotive industry, more and more families choose seven-seat MPV (multi-Purpose Vehicles) models as travel tools. This has increased the functional requirements for seat frames, such as increasing the number of passengers, converting the trunk into a bed, and enlarging the storage space for large items in the luggage compartment. Among them, due to limitations in seat structure and vehicle body space, a seat folding mechanism is usually provided on the seat frame to fold the vehicle seat to increase the storage space in the luggage compartment.

[0003] However, the existing seat folding mechanisms mainly achieve a 90° or 180° forward fold of the seat frame, and the folding angle is relatively single, resulting in a relatively single use function of the seat. In addition, when a seat frame that folds forward by 90° is used, the function of converting the trunk into a bed cannot be satisfied, and the storage space in the luggage compartment is still limited. Summary of the Utility Model

[0004] The problem to be solved by the utility model is: how to improve the use function of the seats in seven-seat multi-purpose vehicle models.

[0005] To solve the above problems, the utility model provides an electric folding seat frame and a vehicle.

[0006] In a first aspect, the utility model provides an electric folding seat frame, including a backrest frame, a seat cushion frame, an adjustment mechanism, and an electric folding mechanism. One end of the seat cushion frame is rotatably connected to the backrest frame through the adjustment mechanism, and the other end is connected to a support surface through the electric folding mechanism. The adjustment mechanism is used to adjust the folding angle of the backrest frame and lock the backrest frame at the current folding angle, and the electric folding mechanism is used to adjust the folding angle of the seat cushion frame and lock the seat cushion frame at the current folding angle.

[0007] Optionally, the folding angles of both the backrest frame and the seat cushion frame are between 0 and 180°.

[0008] Optionally, the electric folding mechanism includes an angle adjuster, a driving motor, a first connecting bracket, and a second connecting bracket. The first connecting bracket and the second connecting bracket are rotatably connected by the angle adjuster. The first connecting bracket is connected to the seat cushion frame, and the second connecting bracket is used to connect to the support surface. The driving motor is connected to the angle adjuster and is used to drive the angle adjuster to rotate. The angle adjuster is used to adjust the folding angle of the seat cushion frame when rotating and lock when stopping rotating, and the rotation axis of the angle adjuster is parallel to the left-right direction of the vehicle.

[0009] Optionally, the electric folding mechanism further includes a transmission shaft coaxially arranged with the angle adjuster. The seat cushion frame is provided with the angle adjuster, the first connecting bracket, and the second connecting bracket at both ends in the left-right direction, and the first connecting bracket and the second connecting bracket at the same end are rotatably connected by the corresponding angle adjuster;

[0010] The driving motor is located between the two angle adjusters. One end of the transmission shaft is connected to one angle adjuster, and the other end of the transmission shaft is connected to the other angle adjuster through the driving motor; or, the driving motor is located on one side of one angle adjuster away from the other angle adjuster, both ends of the transmission shaft are respectively connected to the two angle adjusters, and the driving motor is connected to one end of the transmission shaft.

[0011] Optionally, when the driving motor is located between the two angle adjusters, the motor shaft of the driving motor and the transmission shaft are respectively splined to the corresponding angle adjuster.

[0012] Optionally, a transition bracket is provided at one end of the seat cushion frame away from the backrest frame, and the first connecting bracket is detachably connected to the transition bracket.

[0013] Optionally, the first connecting bracket includes a first connecting plate and a second connecting plate. The first connecting plate and the second connecting plate are connected to each other and are respectively of an integral structure. The seat cushion frame is connected to the first connecting plate, and the second connecting plate and the second connecting bracket are rotatably connected by the angle adjuster.

[0014] Optionally, the first connecting bracket is provided with a first limiting structure, and the second connecting bracket is provided with a second limiting structure. The first limiting structure and the second limiting structure are used for abutting and cooperating when the seat cushion frame is folded 180°.

[0015] Optionally, the electric folding seat frame further includes a ground lock mechanism. The seat cushion frame is used to be fixed on the support surface through the ground lock mechanism, and the electric folding mechanism is used to adjust the folding angle of the seat cushion frame when the ground lock mechanism is unlocked.

[0016] Optionally, the ground lock mechanism is connected to one end of the seat cushion frame that is connected to the backrest frame.

[0017] In a second aspect, the present invention provides a vehicle, including the electric folding seat frame as described above.

[0018] The beneficial effects of the electric folding seat frame of the present invention are as follows: By setting the adjustment mechanism and the electric folding mechanism, and rotatably connecting, for example, the rear end of the seat cushion frame to the backrest frame through the adjustment mechanism, and connecting, for example, the front end of the seat cushion frame to a support surface such as the vehicle body floor through the electric folding mechanism. In this way, when the electric folding seat frame is applied to a seven-seat multi-purpose vehicle, the backrest frames of the second-row seats and the third-row seats can be flipped backward to the flat state under the action of the adjustment mechanism, so that the second-row seats and the third-row seats after being flattened can be used as a bed, thus realizing the function of the seat becoming a bed. Additionally, after flipping the backrest frame of the third-row seat forward to the folded state, the seat cushion frame of the third-row seat can be automatically flipped forward by 90° under the action of the electric folding mechanism to increase the trunk space, so that the trunk can be used as a children's bed. On this basis, the seat cushion frame of the second-row seat can be flipped forward by 90° using the electric folding mechanism of the second-row seat, and then the seat cushion frame of the third-row seat can be further flipped forward by 180° using the electric folding mechanism of the third-row seat to further increase the trunk space, so that the trunk can store extra-large luggage or be used as an adult bed, thereby realizing the function of an extra-large trunk storage space and the function of the trunk becoming a bed. In this way, the seats of the seven-seat multi-purpose vehicle can realize the function of the seat becoming a bed, or realize the function of the trunk becoming a bed and the function of an extra-large trunk storage space. This not only diversifies the use functions of the seats, but also realizes the automatic folding of the seat cushion using the electric folding mechanism, making the folding operation of the seat simple, convenient, and highly automated. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the electric folding seat frame in an embodiment of the present invention;

[0020] Figure 2 is Figure 1 a partial enlarged view of part A in

[0021] Figure 3 is Figure 1 a partial enlarged view of part B in

[0022] Figure 4 is a schematic structural diagram of the electric folding seat frame in the riding state in an embodiment of the present invention;

[0023] Figure 5This is a schematic structural diagram of the electric folding seat frame in the present utility model when the backrest frame is in the flat state;

[0024] Figure 6 This is a schematic structural diagram of the electric folding seat frame in the present utility model when the backrest frame is in the reclined state;

[0025] Figure 7 This is a schematic structural diagram of the electric folding seat frame in the present utility model when the seat cushion frame is folded forward by 90° towards the front of the vehicle;

[0026] Figure 8 This is a schematic structural diagram of the electric folding seat frame in the present utility model when the seat cushion frame is folded forward by 180° towards the front of the vehicle.

[0027] Explanation of reference numerals:

[0028] 1. Backrest frame; 2. Seat cushion frame; 21. Transition bracket; 3. Adjusting mechanism; 4. Electric folding mechanism; 41. Angle adjuster; 42. Driving motor; 43. First connecting bracket; 431. First connecting plate; 432. Second connecting plate; 4321. Plate body; 4322. Flange; 433. First limiting structure; 44. Second connecting bracket; 45. Transmission shaft; 5. Ground lock mechanism. Detailed implementation manners

[0029] To make the above objects, features and advantages of the present utility model more obvious and understandable, the following detailed description of the specific embodiments of the present utility model is made with reference to the accompanying drawings. Although some embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be construed as limited to the embodiments described herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present utility model. It should be understood that the accompanying drawings and embodiments of the present utility model are only for exemplary purposes and are not used to limit the protection scope of the present utility model.

[0030] The Z-axis in the drawings represents the vertical direction, that is, the up and down position, and the positive direction of the Z-axis represents the upper side, and the negative direction of the Z-axis represents the lower side; the X-axis in the drawings represents the horizontal direction and is specified as the front and back position, and the positive direction of the X-axis represents the front side, and the negative direction of the X-axis represents the back side; the Y-axis in the drawings represents the left and right position, and the positive direction of the Y-axis represents the left side, and the negative direction of the Y-axis represents the right side. At the same time, it should be noted that the above-mentioned representations of the Z-axis, Y-axis and X-axis are only for the convenience of describing the present 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 construed as a limitation to the present utility model.

[0031] As used herein, the term "including" and its variants are open-ended, i.e., "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiment". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts such as "first" and "second" mentioned in the present utility model are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0032] It should be noted that the modifications of "one" and "multiple" mentioned in the present utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise clearly specified in the context, it should be understood as "one or more".

[0033] In the related art, the seat folding mechanism of the rear row seats (i.e., the second row seats and the third row seats) of a seven-seat multi-purpose vehicle mainly realizes the forward folding of the seat frame by 90° or 180°, and the folding angle is relatively single, resulting in a relatively single use function of the seat. In addition, when the seat frame is folded forward by 90°, the function of forming a bed in the trunk cannot be satisfied, and the storage space of the trunk is still limited.

[0034] In view of the problems existing in the above related art, the present utility model provides an electric folding seat frame and a vehicle, which are mainly applied to seven-seat multi-purpose vehicles, but can also be applied to other vehicles. For the convenience of description, the following will take the application of the electric folding seat frame to a seven-seat multi-purpose vehicle as an example for illustration.

[0035] Combined with Figure 1 、 Figures 4 to 8 As shown, an electric folding seat frame provided by an embodiment of the present utility model includes a backrest frame 1, a seat cushion frame 2, an adjusting mechanism 3 and an electric folding mechanism 4. One end of the seat cushion frame 2 is rotatably connected to the backrest frame 1 through the adjusting mechanism 3, and the other end is connected to the support surface through the electric folding mechanism 4. The adjusting mechanism 3 is used to adjust the folding angle of the backrest frame 1 and lock the backrest frame 1 at the current folding angle, and the electric folding mechanism 4 is used to adjust the folding angle of the seat cushion frame 2 and lock the seat cushion frame 2 at the current folding angle.

[0036] It should be noted that the folding angle of the backrest frame 1 generally refers to the flipping angle of the backrest frame 1 relative to the seat cushion frame 2, which is also the included angle between the backrest frame 1 and the seat cushion frame 2. The folding angle of the seat cushion frame 2 generally refers to the flipping angle of the seat cushion frame 2 relative to a support surface such as the vehicle body floor, which is also the included angle between the seat cushion frame 2 and the support surface. In a seven-seat multi-purpose vehicle, when the second row and the third row of seats are occupied by passengers, the seat cushion frame 2 of the seat is usually set horizontally, that is, the folding angle of the seat cushion frame 2 is 0, while the backrest frame 1 of the seat is usually set obliquely, and the folding angle of the backrest frame 1 is an obtuse angle, as Figure 4 shown. At this time, it can also be said that the backrest frame 1 is in the occupied state. When the backrest frame 1 rotates around an axis parallel to the left-right direction of the vehicle (i.e., Figure 1 the Y-axis direction in Figure 1 ) towards the front of the vehicle (i.e., Figure 6 the positive X-axis direction in Figure 1 ) under the action of the adjustment mechanism 3 until it is parallel or approximately parallel to the seat cushion frame 2, the folding angle of the backrest frame 1 is 0. At this time, the backrest frame 1 is in the laid-down state, which can also be called the folded state, as Figure 5 shown; when the backrest frame 1 rotates around the rotation axis towards the rear of the vehicle (i.e., Figure 6 the negative X-axis direction in Figure 7 and Figure 8 ) under the action of the adjustment mechanism 3 until it is laid flat, the folding angle of the backrest frame 1 is 180°, and at this time, the backrest frame 1 is in the laid-flat state, as

[0037] Figure 5 shown. When the backrest frame 1 is in the laid-down state, the seat cushion frame 2 can rotate around an axis parallel to the left-right direction of the vehicle towards the front of the vehicle under the action of the electric folding mechanism 4 and hover at the current folding angle, as Figure 6 、 Figure 7 and Figure 8 shown.

[0037] Specifically, in an electric folding seat frame, the lower end of the backrest frame 1 is usually rotatably connected to the rear end of the seat cushion frame 2 through an adjustment mechanism 3, and the front end of the seat cushion frame 2 is connected to the support surface through an electric folding mechanism 4. Here, the support surface is usually the vehicle floor. The adjustment mechanism 3 is usually an electric adjustment mechanism, which mainly uses, for example, an angle adjustment device and a motor to automatically adjust the folding angle of the backrest frame 1, so that the backrest frame 1 can hover at any angle position within an adjustable angle range, such as between 0 and 180°. In addition, the setting method of the adjustment mechanism 3 is the same as that of the electric backrest adjustment device in the prior art, that is, it is usually arranged at both ends of the backrest frame 1 in the left-right direction of the vehicle. The electric folding mechanism 4 can use, for example, an angle adjustment device and a motor to automatically adjust the folding angle of the seat cushion frame 2, or use the method of driving the seat cushion frame 2 to flip by a motor to automatically adjust the folding angle of the seat cushion frame 2. However, no matter which method is used, it enables the seat cushion frame 2 to hover at any angle position within an adjustable angle range, such as between 0 and 180°. In addition, the electric folding mechanism 4 is usually arranged at the front end of the seat cushion frame 2 and is located below the front end of the seat cushion frame 2. It can be arranged at the middle position of the front end of the seat cushion frame 2, or can be arranged on the left side and / or the right side of the front end of the seat cushion frame 2. In practical applications, it can be selected and designed according to needs, and no specific limitation is made here.

[0038] In this embodiment, the electric folding seat frame can be provided with an adjustment mechanism 3 and an electric folding mechanism 4. For example, the rear end of the seat cushion frame 2 is rotatably connected to the backrest frame 1 through the adjustment mechanism 3, and the front end of the seat cushion frame 2 is connected to a support surface such as the vehicle body floor through the electric folding mechanism 4. In this way, when the electric folding seat frame is applied to a seven-seat multi-purpose vehicle, the backrest frames 1 of the second-row seats and the third-row seats can be flipped backward to a flat state under the action of the adjustment mechanism 3, so that the second-row seats and the third-row seats in the flat state can be used as beds, thus realizing the function of the seat becoming a bed. In addition, after the backrest frame 1 of the third-row seat is flipped forward to a folded state, the seat cushion frame 2 of the third-row seat can be automatically flipped forward by 90° under the action of the electric folding mechanism 4 to increase the space of the trunk, so that the trunk can be used as a children's bed. On this basis, the electric folding mechanism 4 of the second-row seat can be used to flip the seat cushion frame 2 of the second-row seat forward by 90°, and then the electric folding mechanism 4 of the third-row seat can be further used to flip the seat cushion frame 2 of the third-row seat forward by 180° to further increase the storage space of the trunk, so that the trunk can store extra-large luggage or be used as an adult bed, thus realizing the function of the extra-large trunk storage space and the function of the trunk becoming a bed. In this way, the seats of the seven-seat multi-purpose vehicle can realize the function of the seat becoming a bed, or realize the function of the trunk becoming a bed and the function of the extra-large trunk storage space. This not only diversifies the use functions of the seats, but also uses the electric folding mechanism 4 to realize the automatic folding of the seat cushion, making the folding operation of the seat simple and convenient, and having a high degree of automation.

[0039] Optionally, in combination with Figures 4 to 8 as shown, the folding angles of the backrest frame 1 and the seat cushion frame 2 are both between 0 and 180°. With such a setting, not only can the backrest frame 1 hover at any angular position between 0 and 180° relative to the seat cushion frame 2 in the horizontal state, but also the seat cushion frame 2 can hover at any angular position between 0 and 180° relative to the vehicle body floor, thereby further increasing the angle adjustment range of the backrest frame 1 and the seat cushion frame 2, enabling the seats of the seven-seat multi-purpose vehicle to simultaneously have the functions of the seat becoming a bed, the trunk becoming a bed, and the extra-large trunk storage space, further expanding the use functions of the seats.

[0040] Optionally, in combination with Figure 1 and Figure 2As shown in the figure, the electric folding mechanism 4 includes an angle adjuster 41, a drive motor 42, a first connection bracket 43, and a second connection bracket 44. The first connection bracket 43 and the second connection bracket 44 are rotationally connected through the angle adjuster 41. The first connection bracket 43 is connected to the seat cushion frame 2, and the second connection bracket 44 is used to connect to the support surface. The drive motor 42 is connected to the angle adjuster 41 and is used to drive the angle adjuster 41 to rotate. The angle adjuster 41 is used to drive the first connection bracket 43 to rotate synchronously when rotating to adjust the folding angle of the seat cushion frame 2, and lock when stopping rotating. Moreover, the rotation axis of the angle adjuster 41 is parallel to the left-right direction of the vehicle.

[0041] Specifically, the angle adjuster 41 is usually a continuous angle adjuster (also called stepless angle adjuster), which mainly includes an inner tooth plate and an outer tooth plate that mesh with each other and can rotate relative to each other. Moreover, when the inner tooth plate rotates relative to the outer tooth plate, there is always at least one tooth in the meshing state between the two, so that the angle adjuster 41 can achieve self-locking. The first connection bracket 43 is usually connected to one of the inner tooth plate and the outer tooth plate, and the second connection bracket 44 is usually connected to the other of the inner tooth plate and the outer tooth plate. Among them, the drive motor 42 driving the angle adjuster 41 to rotate means that the drive motor 42 drives one of the inner tooth plate and the outer tooth plate to rotate relative to the other. For example, when the first connection bracket 43 is connected to the outer tooth plate of the angle adjuster 41, the inner tooth plate of the angle adjuster 41 is fixed by the second connection bracket 44, and the motor shaft of the drive motor 42 is connected to the outer tooth plate of the angle adjuster 41 and can drive the outer tooth plate of the angle adjuster 41 to rotate; when the first connection bracket 43 is connected to the inner tooth plate of the angle adjuster 41, the outer tooth plate of the angle adjuster 41 is fixed by the second connection bracket 44, and the motor shaft of the drive motor 42 is connected to the inner tooth plate of the angle adjuster 41 and can drive the inner tooth plate of the angle adjuster 41 to rotate. The first connection bracket 43 and the seat cushion frame 2, as well as the second connection bracket 44 and the support surface, are usually connected by bolts, which are not only firmly connected but also convenient for disassembly and assembly. In addition, the electric folding mechanism 4 in this embodiment usually includes an angle adjuster 41, a drive motor 42, a first connection bracket 43, and a second connection bracket 44. At this time, an electric folding mechanism 4 can be set at the middle position of the front end of the seat cushion frame 2 to ensure the force balance of the seat cushion frame 2, or an electric folding mechanism 4 can be set on each of the left and right sides of the front end of the seat cushion frame 2, and the motor shafts of the drive motors 42 of the two electric folding mechanisms 4 can rotate synchronously to ensure the smooth folding of the seat cushion frame 2. When adjusting the folding angle of the seat cushion frame 2, the drive motor 42 drives the angle adjuster 41 to rotate, and the angle adjuster 41 drives the first connection bracket 43 to rotate relative to the second connection bracket 44, thereby driving the seat cushion frame 2 connected to the first connection bracket 43 to fold around the rotation axis of the angle adjuster 41. When the seat cushion frame 2 folds to the required position, the drive motor 42 is stopped from driving. At this time, the angle adjuster 41 locks, so that the seat cushion frame 2 hovers at the current folding angle.

[0042] In this alternative embodiment, the angle adjuster 41 is driven by the drive motor 42 to rotate, driving the first connecting bracket 43 to rotate relative to the second connecting bracket 44, and further driving the seat cushion frame 2 to fold, thereby realizing the automatic adjustment of the folding angle of the seat cushion frame 2 by the electric folding mechanism 4. This is not only convenient to operate, but also the two core adjustment components, the angle adjuster 41 and the drive motor 42, can be directly obtained on the market, which can reduce the design difficulty of the electric folding mechanism 4 and improve production efficiency. In addition, the setting of the second connecting bracket 44 can not only provide support for the seat cushion frame 2, but also increase the distance between the seat cushion frame 2 and the support surface, providing a larger layout space for the electric folding mechanism 4.

[0043] Optionally, as shown in Figure 1 and Figure 2 , the electric folding mechanism 4 further includes a transmission shaft 45 coaxially arranged with the angle adjuster 41. Angle adjusters 41, first connecting brackets 43, and second connecting brackets 44 are provided at both ends of the seat cushion frame 2 in the left-right direction, and the first connecting bracket 43 and the second connecting bracket 44 at the same end are rotationally connected through the corresponding angle adjuster 41.

[0044] The drive motor 42 is located between the two angle adjusters 41. One end of the transmission shaft 45 is connected to one angle adjuster 41, and the other end is connected to the other angle adjuster 41 through the drive motor 42; alternatively, the drive motor 42 is located on one side of one angle adjuster 41 away from the other angle adjuster 41, and both ends of the transmission shaft 45 are respectively connected to the two angle adjusters 41, and the drive motor 42 is connected to one end of the transmission shaft 45.

[0045] In this alternative embodiment, the electric folding mechanism 4 includes two angle adjusters 41, one drive motor 42, two first connecting brackets 43, two second connecting brackets 44, and one transmission shaft 45. One angle adjuster 41, one first connecting bracket 43, and one second connecting bracket 44 are provided on both the left and right sides of the front end of the seat cushion frame 2. The drive motor 42 can be located between the two angle adjusters 41. At this time, the drive motor 42 is directly connected to one of the two angle adjusters 41 and is connected to the other angle adjuster 41 through the transmission shaft 45, as shown in Figure 1 , such that the drive motor 42 is located inside the seat cushion frame 2, that is, on the side of the seat cushion frame 2 facing the interior of the vehicle; or, the drive motor 42 is located on one side of one angle adjuster 41 away from the other angle adjuster 41. At this time, one end of the transmission shaft 45 is connected to one of the angle adjusters 41, and the other end passes through the other angle adjuster 41 and is connected to the drive motor 42, such that the drive motor 42 is located outside the seat cushion frame 2, that is, on the side of the seat cushion frame 2 facing the outside of the vehicle. In addition, the drive motor 42 and the angle adjuster 41, as well as the transmission shaft 45 and the angle adjuster 41, can be fixedly connected by means such as clamping or spline connection, which is not specifically limited here.

[0046] In this way, by simultaneously arranging the angle adjusters 41, the first connecting bracket 43, and the second connecting bracket 44 on, for example, the left and right sides of the seat cushion frame 2, the load-bearing performance of the seat cushion frame 2 is improved. Moreover, by arranging the transmission shaft 45 and connecting the drive motor 42 to one of the angle adjusters 41, both ends of the transmission shaft 45 are respectively connected to the drive motor 42 and the other angle adjuster 41, or both ends of the transmission shaft 45 are respectively connected to the two angle adjusters 41, and the drive motor 42 is connected to one end of the transmission shaft 45 by, for example, a coupling, so as to use the transmission shaft 45 to transmit the power output by the drive motor 42 to the two angle adjusters 41 respectively, thereby realizing driving the angle adjusters 41 on both sides of the seat cushion frame 2 to rotate synchronously by one drive motor 42, and further reducing the number of drive motors 42 and lowering the production cost. In addition, when the drive motor 42 is connected to one of the angle adjusters 41 and both ends of the transmission shaft 45 are respectively connected to the drive motor 42 and the other angle adjuster 41, the drive motor 42 is located inside the seat cushion frame 2, so that the layout space occupied by the electric folding mechanism 4 in the Y direction (i.e., the left and right direction) of the seat cushion frame 2 can be reduced, ensuring that the seat has a larger seating space in the Y direction, and further improving the seating comfort of the seat.

[0047] Optionally, in combination with Figure 4 As shown, when the drive motor 42 is located between the two angle adjusters 41, the motor shaft of the drive motor 42 and the transmission shaft 45 are respectively splined to the corresponding angle adjusters 41.

[0048] In this optional embodiment, it is preferred that the drive motor 42 is arranged between the two angle adjusters 41. Moreover, generally, an external spline structure is arranged on the motor shaft and the transmission shaft 45, and an internal spline structure is arranged on the internal or external toothed plate of the angle adjuster 41, so as to use the internal and external spline structures to realize the spline connection between the motor shaft of the drive motor 42 and the corresponding angle adjuster 41 and between the transmission shaft 45 and the corresponding angle adjuster 41. This structure is not only simple and convenient for disassembly and assembly, but also firmly connected, and can better transmit the rotational motion output by the drive motor 42 to the two angle adjusters 41.

[0049] Furthermore, the transmission shaft 45 is an external spline shaft. That is to say, the external spline structure on the transmission shaft 45 extends from one end of the transmission shaft 45 to the other end, making the transmission shaft 45 an overall external spline shaft. In this way, the transmission shaft 45 can be cut according to the length dimensions of different seats in the left and right directions of the vehicle to ensure that the transmission shaft 45 can adapt to seats of different lengths. Moreover, the types of the transmission shaft 45 can be reduced, which is convenient for material management.

[0050] Optionally, in combination with Figure 2 and Figure 3As shown in the figure, a transition bracket 21 is provided at one end of the seat cushion frame 2 away from the backrest frame 1, and the first connecting bracket 43 is detachably connected to the transition bracket 21. In this way, different transition brackets 21 can be set according to the seats of different vehicle models, so that the electric folding mechanism 4 can be adapted to the seats of different vehicle models, facilitating modular layout.

[0051] Optionally, in combination with Figure 2 As shown in the figure, the first connecting bracket 43 includes a first connecting plate 431 and a second connecting plate 432. The first connecting plate 431 and the second connecting plate 432 are connected to each other and are respectively integral structures. The seat cushion frame 2 is connected to the first connecting plate 431, and the second connecting plate 432 and the second connecting bracket 44 are rotatably connected by an angle adjuster 41.

[0052] In this optional embodiment, both the first connecting plate 431 and the second connecting plate 432 are independent parts. Usually, the first connecting plate 431 is connected to the second connecting plate 432 by welding or bolt connection, etc., and is connected to the transition bracket 21 of the seat cushion frame 2 by bolt connection. Usually, the inner tooth plate (outer tooth plate) of the angle adjuster 41 is fixedly connected to the second connecting plate 432 by clamping, and the outer tooth plate (inner tooth plate) of the angle adjuster 41 is fixedly connected to the second connecting bracket 44 by welding. In this way, the first connecting bracket 43 is set to include the first connecting plate 431 and the second connecting plate 432 that are connected to each other and are respectively integral structures, so as to facilitate the segmented manufacturing of the first connecting bracket 43 with a complex structure, thereby reducing the production difficulty of the first connecting bracket 43 and further improving the production efficiency.

[0053] Furthermore, in combination with Figure 3 As shown in the figure, the second connecting plate 432 includes a plate body 4321 and a flange 4322. The flange 4322 is arranged along the edge of the plate body 4321 and is located on the side of the plate body 4321 away from the second connecting bracket 44. In this way, the structural strength of the second connecting plate 432 can be improved by setting the flange 4322, which can not only ensure that the second connecting plate 432 can better drive the first connecting plate 431 and the seat cushion frame 2 to rotate, but also improve the supporting force of the first connecting bracket 43 on the seat cushion frame 2, thereby further improving the bearing performance of the seat cushion frame 2.

[0054] Optionally, in combination with Figure 2 As shown in the figure, the first connecting bracket 43 is provided with a first limiting structure 433, and the second connecting bracket 44 is provided with a second limiting structure. The first limiting structure 433 and the second limiting structure are used for abutting and cooperating when the seat cushion frame 2 is folded 180°.

[0055] In this alternative embodiment, the first limiting structure 433 is generally arranged on the second connecting plate 432. The first limiting structure 433 and the second limiting structure (not shown in the figure) can achieve the limiting effect by the abutting fit between two limiting protrusions, or can achieve the limiting effect by the abutting fit between the limiting protrusion and the wall of the limiting groove. In practical applications, it can be selected and designed according to needs, and no specific limitation is made here. In this way, the arrangement of the first limiting structure 433 and the second limiting structure enables them to achieve a dual protection function together with the driving motor 42. When the driving motor 42 fails or is damaged, the mutual cooperation of the first limiting structure 433 and the second limiting structure can be used to limit the maximum folding angle of the seat cushion frame 2, that is, to limit the seat cushion frame 2 to stop after folding 180°, and prevent the folding angle of the seat cushion frame 2 from exceeding 180° and colliding and interfering with, for example, the supporting surface, etc.

[0056] Optionally, as shown in Figure 4 the electric folding seat frame further includes a ground lock mechanism 5. The seat cushion frame 2 is used to be fixed on the supporting surface through the ground lock mechanism 5, and the electric folding mechanism 4 is used to adjust the folding angle of the seat cushion frame 2 when the ground lock mechanism 5 is unlocked. Among them, the ground lock mechanism 5 is generally prior art, and its specific structure will not be elaborated here.

[0057] In this way, when the backrest frame 1 needs to be adjusted, the ground lock mechanism 5 can be used to fix the seat cushion frame 2 on the supporting surface to ensure that the seat cushion frame 2 will not fold together with the backrest frame 1. When the seat cushion frame 2 needs to be folded forward in the vehicle front direction, the ground lock mechanism 5 can be unlocked first, so that the seat cushion frame 2 can fold around the rotation axis of the angle adjuster 41, thereby realizing the forward folding of the seat cushion frame 2.

[0058] Optionally, as shown in Figure 4 the ground lock mechanism 5 is connected to one end of the seat cushion frame 2 connected to the backrest frame 1. Among them, the ground lock mechanism 5 is generally arranged at the rear end of the seat cushion frame 2, and usually there are two. In this way, while the front end of the seat cushion frame 2 can be supported by the electric folding mechanism 4, the ground lock mechanism 5 can also provide a supporting force at the rear end of the seat cushion frame 2, so that both the front end and the rear end of the seat cushion frame 2 can be supported, thereby ensuring that the overall force of the seat cushion frame 2 is uniform and the bearing capacity is higher.

[0059] A vehicle provided by an embodiment of the present invention includes the above-mentioned electric folding seat frame.

[0060] The beneficial effects of the vehicle in this embodiment compared with the prior art are the same as those of the above-mentioned electric folding seat frame, and will not be elaborated here.

[0061] Although the present utility model is disclosed as above, the protection scope of the present utility model is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present utility model, and these changes and modifications will all fall within the protection scope of the present utility model.

Claims

1. An electric folding seat frame, characterized in that: The invention comprises a backrest frame (1), a seat cushion frame (2), an adjustment mechanism (3) and an electric folding mechanism (4); one end of the seat cushion frame (2) is rotatably connected to the backrest frame (1) via the adjustment mechanism (3), and the other end is connected to a support surface via the electric folding mechanism (4); the adjustment mechanism (3) is used to adjust the folding angle of the backrest frame (1) and to lock the backrest frame (1) at the current folding angle; and the electric folding mechanism (4) is used to adjust the folding angle of the seat cushion frame (2) and to lock the seat cushion frame (2) at the current folding angle.

2. The electric folding seat frame according to claim 1, characterized in that: The folding angles of the backrest frame (1) and the seat cushion frame (2) are both between 0 and 180 degrees.

3. The electric folding seat frame according to claim 1, characterized in that: The electric folding mechanism (4) comprises a recliner (41), a driving motor (42), a first connecting bracket (43) and a second connecting bracket (44); the first connecting bracket (43) and the second connecting bracket (44) are rotatably connected via the recliner (41); the first connecting bracket (43) is connected to the seat cushion frame (2); the second connecting bracket (44) is used to be connected to the supporting surface; the driving motor (42) is connected to the recliner (41) and is used to drive the recliner (41) to rotate; the recliner (41) is used to drive the first connecting bracket (43) to rotate synchronously when rotating to adjust the folding angle of the seat cushion frame (2), and is locked when the rotation stops; and the rotation axis of the recliner (41) is parallel to the left-right direction of the vehicle.

4. The electric folding seat frame according to claim 3, characterized in that: The electric folding mechanism (4) further comprises a transmission shaft (45) coaxially arranged with the angle adjuster (41); the angle adjuster (41), the first connecting bracket (43) and the second connecting bracket (44) are both arranged at the two ends of the seat cushion frame (2) along the left-right direction; and the first connecting bracket (43) and the second connecting bracket (44) located at the same end are rotatably connected via the corresponding angle adjuster (41); The driving motor (42) is located between the two angle adjusters (41), one end of the transmission shaft (45) is connected to one of the angle adjusters (41), and the other end of the transmission shaft (45) is connected to the other angle adjuster (41) through the driving motor (42); or, the driving motor (42) is located on a side of one of the angle adjusters (41) away from the other angle adjuster (41), the two ends of the transmission shaft (45) are respectively connected to the two angle adjusters (41), and the driving motor (42) is connected to one end of the transmission shaft (45).

5. The electric folding seat frame according to claim 4, characterized in that: When the driving motor (42) is located between the two angle adjusters (41), the motor shaft of the driving motor (42) and the transmission shaft (45) are respectively spline-connected to the corresponding angle adjusters (41).

6. The electric folding seat frame according to claim 3, characterized in that: A transition bracket (21) is provided at one end of the seat cushion frame (2) away from the backrest frame (1), and the first connecting bracket (43) is detachably connected to the transition bracket (21).

7. The electric folding seat frame according to claim 3, characterized in that: The first connecting bracket (43) comprises a first connecting plate (431) and a second connecting plate (432); the first connecting plate (431) and the second connecting plate (432) are connected to each other and are respectively an integral structure; the seat cushion frame (2) is connected to the first connecting plate (431); the second connecting plate (432) and the second connecting bracket (44) are rotatably connected via the angle adjuster (41).

8. The electric folding seat frame according to claim 3, characterized in that: The first connecting bracket (43) is provided with a first limiting structure (433), and the second connecting bracket (44) is provided with a second limiting structure, and the first limiting structure (433) and the second limiting structure are used for abutting and matching when the seat cushion frame (2) is folded 180 degrees.

9. The electric folding seat frame according to claim 1, characterized in that: It also comprises a ground locking mechanism (5), the seat cushion frame (2) is used to be fixed to the support surface through the ground locking mechanism (5), and the electric folding mechanism (4) is used to adjust the folding angle of the seat cushion frame (2) when the ground locking mechanism (5) is unlocked.

10. A vehicle, characterized in that: It comprises an electric folding seat frame as described in any one of claims 1-9.

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