Automatic adjusting automobile seat and automobile

Abstract

The automobile seat comprises a seat cushion base, a backrest supporting base and an automatic adjusting assembly located between the seat cushion base and the backrest supporting base, and the automatic adjusting assembly comprises two lower angle adjusting devices installed on the seat cushion base respectively, two lower angle adjusting devices installed on the backrest supporting base respectively and two lower angle adjusting devices installed on the backrest supporting base respectively. The center shafts of the two lower angle adjusting devices are connected through a first synchronizing shaft. The two upper angle adjusting devices are mounted on the lower side of the backrest supporting seat, and central shafts of the two upper angle adjusting devices are connected through a second synchronizing shaft; the middle connecting plate is located between the seat cushion base and the backrest supporting seat, and the upper side and the lower side of the middle connecting plate are connected with an upper angle adjusting device and a lower angle adjusting device respectively; the first driving device is in transmission connection with the first synchronizing shaft and drives the first synchronizing shaft to rotate; and the second driving device is in transmission connection with the second synchronizing shaft and drives the second synchronizing shaft to rotate. Stepless adjustment of the back leaning angle and the front leaning angle of the backrest can be achieved, operation is easy and convenient, and angle adjustment is accurate.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobile parts, in particular to an automobile seat capable of automatically adjusting the angle of the backrest. BACKGROUND

[0002] The automobile seat, as a core comfort component of the vehicle, its adjustment function directly affects the user's driving experience and the utilization rate of the vehicle space. In particular, in the design of the rear seat of the automobile, it needs to have a folding function to increase the storage area of the trunk in special circumstances, and also needs to have a separate adjustment function of the backrest to improve the comfort of the seat.

[0003] At present, the folding adjustment and the backrest angle adjustment of the rear seat of the automobile are realized by manual adjustment. Since the angle adjustment function of the seat mainly relies on the spring to provide a restoring force, in order to ensure that the seat can stably maintain the angle after adjustment and avoid accidental displacement, the spring needs to be designed with a large elastic force. This leads to poor operation convenience when the user adjusts, as the user needs to exert enough external force to overcome the elastic force of the spring. Even if the user has enough strength, the user needs to continuously exert force during the adjustment process, which is easy to cause the adjustment to be stuck due to uneven force, or the angle of the backrest to suddenly change due to excessive force at a moment, so that the required angle cannot be accurately positioned, and the use experience is seriously affected. In addition, the left and right side adjusters of the manually adjusted seat are mostly driven by independent levers, without a synchronous linkage structure, and the distribution of the spring elastic force on the left and right sides is easy to deviate, which leads to the problem of uneven inclination of the left and right backrests during adjustment. SUMMARY

[0004] Therefore, the present application provides an automobile seat capable of automatically adjusting the angle and an automobile, so as to improve the comfort, practicality and operation portability of the automobile seat.

[0005] In view of the above technical problems, the present application provides the following technical solutions:

[0006] An automatically adjusted automobile seat comprises a seat cushion base, a backrest support seat, and an automatic adjustment assembly located between the seat cushion base and the backrest support seat. The automatic adjustment assembly comprises two lower adjusters respectively mounted on the seat cushion base, the center shafts of the two lower adjusters being connected by a first synchronous shaft located between the two lower adjusters; two upper adjusters mounted on the lower side of the backrest support seat, the center shafts of the two upper adjusters being connected by a second synchronous shaft located between the two upper adjusters; an intermediate connecting plate located between the seat cushion base and the backrest support seat, the upper and lower sides of the intermediate connecting plate being connected with the upper adjusters and the lower adjusters respectively; a first driving device, the first driving device being in transmission connection with the first synchronous shaft and driving the first synchronous shaft to rotate; and a second driving device, the second driving device being in transmission connection with the second synchronous shaft and driving the second synchronous shaft to rotate.

[0007] In some embodiments of the present invention, a linkage mechanism is also included, comprising: two sets of seat cushion longitudinal beams, one end of which is pivotally connected to both sides of the backrest support, and the other end extending to the upper front end of the seat cushion base; a seat cushion crossbeam located between the two seat cushion longitudinal beams, the crossbeam being close to the front end of the seat cushion longitudinal beams; and two sets of seat cushion uprights, one end of which is pivotally connected to the front end of the seat cushion longitudinal beam, and the other end of which is pivotally connected to the front end of the seat cushion base.

[0008] In some embodiments of the present invention, when the backrest support is flipped to a horizontal state, a portion of the horizontally extending longitudinal beam of the seat cushion descends to a state close to the bottom surface of the seat cushion base, and the seat cushion upright pivots to extend horizontally.

[0009] In some embodiments of the present invention, the first driving device drives the first synchronous shaft to rotate, thereby causing the intermediate connecting plate to rotate relative to the seat cushion base, and thus causing the backrest support to flip; the second driving device drives the second synchronous shaft to rotate, thereby causing the backrest support to swing relative to the intermediate connecting plate.

[0010] In some embodiments of the present invention, a seat control unit is further included, which controls the first drive device to operate in response to a backrest flattening / unfolding signal; or, the seat control unit controls the second drive device to operate in response to a backrest reclining angle adjustment signal.

[0011] In some embodiments of the present invention, the invention further includes a seat cushion body covering the seat cushion base and a backrest body covering the backrest support.

[0012] In some embodiments of the present invention, a backrest tilt angle adjustment switch is provided on the rear side of the backrest body or the lower side of the seat cushion body, and a backrest flattening / unfolding switch is provided on the left / right side of the backrest body or the left / right side of the seat cushion body.

[0013] In some embodiments of the present invention, the angle adjuster is connected to the seat base via a lower connecting plate, the lower connecting plate is fixedly connected to the outer side of the seat base, the outer shell of the angle adjuster is fixed to the outer side of the lower connecting plate, and the central axis of the angle adjuster is fixedly connected to the intermediate connecting plate.

[0014] In some embodiments of the present invention, the upper angle adjuster is connected to the backrest support via an upper connecting plate, the upper connecting plate is fixedly connected to the outer side of the backrest support, the central axis of the upper angle adjuster is fixedly connected to the upper connecting plate, and the outer shell of the upper angle adjuster is fixed to the middle connecting plate.

[0015] The present invention also provides a vehicle including the aforementioned automatically adjustable car seat.

[0016] The technical solution of the present invention has the following technical effects compared with the prior art:

[0017] The automatic adjustable car seat and vehicle provided by this invention utilize two sets of upper and lower angle adjusters to achieve backrest reclining and folding adjustments respectively, balancing seat comfort with efficient use of interior space. Simultaneously, the upper and lower angle adjusters located on both sides of the seat are connected synchronously via synchronized shafts, and two sets of drive devices enable stepless automatic adjustment of the upper and lower angle adjusters, thereby achieving stepless adjustment of the backrest reclining and forward tilt angles. This design is simple and convenient to operate, provides accurate angle adjustment, and avoids uneven left-right tilting issues during backrest adjustment. Attached Figure Description

[0018] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, which will help to understand the purpose and advantages of the present invention, wherein:

[0019] Figure 1 This is a schematic diagram illustrating a specific embodiment of the automatic adjustment of the car seat frame according to the present invention;

[0020] Figure 2 This is a schematic diagram of a specific embodiment of the automatic adjustment component in the automatic adjustment car seat of the present invention;

[0021] Figure 3 This is a schematic diagram illustrating the automatic adjustment of the backrest of a car seat to a flat position according to the present invention.

[0022] Figure 4 This is a schematic diagram illustrating the automatic adjustment of the backrest recline state in a car seat according to the present invention. Detailed Implementation

[0023] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0027] The following is a specific embodiment of the automatically adjustable car seat of the present invention. The car seat includes a seat frame 100 and a seat cushion body (not shown in the figure) and a backrest body (not shown in the figure) covering the outside of the seat frame 100. The seat frame 100 is a steel support frame, and the seat cushion body and the backrest body are made of polyurethane foam covered with fabric to make the car seat both comfortable and supportive.

[0028] Specifically, such as Figure 1 As shown, the seat frame 100 includes a seat cushion base 10, a backrest support 20, and an automatic adjustment assembly 30 located between the two. The seat cushion base 10 includes two seat cushion supports 11 spaced apart from each other. The seat cushion supports 11 are made of cold-rolled steel sheet and have sufficient structural strength to adapt to vehicle floor mounting. The backrest support 20 is constructed of steel profiles in a rectangular frame form, including two longitudinally extending backrest beams 21 and a backrest crossbeam 22 spanning between the longitudinal backrest beams 21.

[0029] like Figure 2As shown, the automatic adjustment assembly 30 includes: two downward adjustment mechanisms 31 symmetrically installed on both sides of the seat cushion base 10, two upward adjustment mechanisms 32 symmetrically installed on the lower side of the backrest support 20, an intermediate connecting plate 33 located between the seat cushion base 10 and the backrest support 20, and a driving device. The upward adjustment mechanisms 32 and the downward adjustment mechanisms 31 are gear-type self-locking adjustment mechanisms, possessing reliable self-locking performance and torque bearing capacity. The central shafts of the downward adjustment mechanisms 31 located on both sides of the seat cushion base 10 are connected to a first synchronous shaft 34 via, for example, a flat key, and the central shafts of the two upward adjustment mechanisms 32 located on the backrest support 20 are connected to a second synchronous shaft 35 via, for example, a flat key structure. The first synchronous shaft 34 and the second synchronous shaft 35 are hollow structures, ensuring transmission strength while reducing weight. The upper side of the intermediate connecting plate 33 is fixedly connected to the outer shell of the upper angle adjuster 32 by bolts, while the lower side is provided with a connecting slot to fit onto the central shaft of the lower angle adjuster 31, playing a key role in pivotally connecting the seat cushion base 10 and the backrest support 20.

[0030] The driving device includes a first driving device 36 connected to the first synchronous shaft 34 and a second driving device 37 connected to the second synchronous shaft 35. When the first driving device 36 drives the first synchronous shaft 34 to rotate in a first direction, it can drive the lowering angle adjuster 31 to rotate in the first direction, thereby causing the backrest support 20 to flip forward to the horizontal direction; when the second driving device 37 drives the second synchronous shaft 35 to rotate in a second direction, it can drive the uppering angle adjuster 32 to rotate in the second direction, thereby causing the backrest support 20 to flip backward to a set angle.

[0031] The aforementioned car seat uses two sets of upper and lower angle adjusters to achieve backrest reclining and folding adjustment respectively. At the same time, the upper and lower angle adjusters located on both sides of the seat are equipped with synchronous shafts to achieve synchronous connection, and two sets of drive devices to achieve stepless automatic adjustment of the upper angle adjuster 32 and the lower angle adjuster 31, thereby achieving stepless adjustment of the backrest reclining and forward tilting angles.

[0032] To ensure that the car seat lowers in height when tilted forward, such as Figure 1 As shown, the car seat also includes a linkage mechanism 40, which includes: two sets of seat cushion longitudinal beams 41, a seat cushion crossbeam 42 located between the two seat cushion longitudinal beams 41, and two sets of seat cushion uprights 43. The seat cushion longitudinal beams 41 are constructed as L-shaped beams. One end of each set of seat cushion longitudinal beams 41 is pivotally connected to both sides of the backrest support 20 near the intermediate connecting plate 33, and the other end extends horizontally to the upper front end of the seat cushion base 10. The seat crossbeam is located near the front end of the seat cushion longitudinal beams 41. One end of each seat cushion upright 43 is pivotally connected to the front end of the seat cushion longitudinal beams 41, and the other end is pivotally connected to the front end of the seat cushion base 10.

[0033] like Figure 3 As shown, when the backrest support 20 is tilted forward in a controlled manner, the intermediate connecting plate 33 rotates along the central axis of the lowering mechanism 31. This causes the seat cushion longitudinal beam 41 to swing forward, driving the seat cushion upright 43 to swing forward around a pivot axis located on the seat cushion base 10 until the seat cushion upright 43 extends horizontally. At this point, the overall seat height is approximately the distance between the two pivot axes. This linkage structure significantly reduces the overall seat height when the seat is tilted, meeting space storage needs and providing users with a more flexible solution for using in-vehicle space.

[0034] Specifically, in order to increase the strength and movement synchronization of the linkage mechanism 40, the linkage mechanism 40 also includes a front seat support 44, which spans between the two seat pillars 43 to improve the strength of the entire linkage mechanism and enable the two seat pillars 43 to swing synchronously.

[0035] The first driving device 36 and the second driving device 37 each include a rotary motor and a reduction gear transmission assembly. The reduction gear transmission assembly includes at least one set of gear transmission groups. The drive motor of the first driving device 36 is mounted on the seat cushion base 10. The final output gear of the gear transmission assembly of the first driving device 36 is fixedly connected to the first synchronous shaft 34. The drive motor of the second driving device 37 is mounted on the backrest support 20. The final output gear of the gear transmission assembly of the second driving device 37 is fixedly connected to the second synchronous shaft 35. When the backrest needs to be flattened, the first driving device 36 starts after receiving a signal, driving the first synchronous shaft 34 to rotate. The first synchronous shaft 34 drives the central shaft of the two side adjustment anglers 31 to rotate, thereby causing the middle connecting plate 33 to rotate relative to the seat cushion base 10 around the central shaft of the adjustment anglers 31. The middle connecting plate 33 then drives the backrest support 20 to rotate synchronously through the upper adjustment angler 32 until the backrest is flush with the seat cushion (e.g., Figure 3 (As shown). When the backrest tilt angle needs to be adjusted, the second drive device 37 is activated, driving the second synchronous shaft 35 to rotate. The second synchronous shaft 35 drives the central shaft of the upper angle adjusters 32 on both sides to rotate, causing the backrest support 20 to swing relative to the middle connecting plate 33 around the central shaft of the upper angle adjuster 32. At this time, the middle connecting plate 33 remains fixed, and only the backrest angle changes (as shown). Figure 4 (As shown). This car seat can independently control the individual reclining and overall flattening functions without the need for an additional switching mechanism, and the operation logic is simple; moreover, the speed and torque of the drive device are reasonably matched, and the adjustment process is smooth and without any impact.

[0036] Specifically, such as Figure 1As shown, the car seat also includes a seat control unit 90, which is installed in a waterproof box inside the seat cushion base 10, providing good protection. The seat control unit 90 responds to a backrest flattening / unfolding signal to control the first drive device 36; or, the seat control unit 90 responds to a backrest angle adjustment signal to control the second drive device 37. For example, when a backrest flattening / unfolding signal is received, the seat control unit 90 outputs a PWM signal to control the first drive device 36 to rotate forward / reverse, and uses a current detection module to determine whether the adjustment is complete, stopping the drive once complete. Similarly, when a backrest tilt angle adjustment signal is received, the seat control unit 90 controls the second drive device 37 to operate, similarly stopping upon completion via current detection.

[0037] Specifically, the car seat also includes a backrest flat / unfolding switch 50 and a backrest tilt angle adjustment switch 60. The backrest flat / unfolding switch 50 can be a self-resetting rocker switch to ensure that it can switch between the flat and upright positions. The backrest tilt angle adjustment switch 60 is a rotary potentiometer switch. Rotary adjustment can achieve stepless angle control to meet the user's personalized angle needs.

[0038] In one embodiment, the backrest folding / unfolding switch 50 is embedded in the rear side of the backrest body for easy operation after opening the trunk. The switch is connected to the control unit via a waterproof wiring harness, and its function is marked on the surface for easy user identification. This ergonomically positioned switch allows the user to access it while the trunk is open, preventing accidental operation while seated, thus improving ease of use and preventing accidental operation by passengers. In another embodiment, the backrest folding / unfolding switch 50 is embedded in the lower side of the seat cushion body to prevent accidental operation while seated. The switch is located near the rear door, facilitating operation while the rear door is open, further enhancing ease of use.

[0039] In one embodiment, the backrest tilt angle adjustment switch 60 is embedded in a convenient operating position on the left / right side of the backrest body near the shoulder, and is connected to the control unit via a wiring harness, with a function label. This switch position matches the user's shoulder operating range, allowing adjustment without standing up and with one hand. In another embodiment, the backrest tilt angle adjustment switch 60 is embedded in the left / right side of the seat cushion body near the buttocks, also allowing for one-handed operation.

[0040] Specifically, in one implementation, such as Figure 1 , Figure 2As shown, the lowering adjustment device 31 is connected to the seat base 10 via a lower connecting plate 38. The lower connecting plate 38 is welded to the outer side of the seat base 10, and the outer shell of the lowering adjustment device 31 is fixed to the outer side of the lower connecting plate 38. The central axis of the lowering adjustment device 31 is fixedly connected to the intermediate connecting plate 33 via a flat key structure. By using the lower connecting plate 38, the contact area between the lowering adjustment device 31 and the seat base 10 can be increased, reducing local stress, preventing deformation of the steel plate of the seat base 10, and improving structural stability.

[0041] Specifically, in one embodiment, the upper angle adjuster 32 is connected to the backrest support 20 via an upper connecting plate 39. The upper connecting plate 39 is welded and fixed to the outer side of the backrest support 20. The central axis of the upper angle adjuster 32 is fixedly connected to the upper connecting plate 39 via a flat key. The outer shell of the upper angle adjuster 32 is fixed to the intermediate connecting plate 33. The rigid connection between the upper connecting plate 39 and the angle adjuster ensures that the backrest support 20 does not shift when it swings, thus guaranteeing adjustment accuracy.

[0042] This invention also provides a specific embodiment of a vehicle, which includes front seats and rear seats. The rear seats adopt the structure of the aforementioned automatically adjustable car seats, which will not be described in detail here. By adopting the above-mentioned car seat structure, independent automatic control of individual backrest reclining and overall flattening can be achieved, eliminating the need for two separate mechanisms. At the same time, when flattened, the vertical height of the seat is significantly reduced, effectively expanding the trunk volume or meeting temporary lying-down needs, thereby improving the utilization rate of the interior space.

[0043] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. An automatically adjustable car seat, characterized in that, The system includes a seat cushion base, a backrest support, and an automatic adjustment assembly located between the seat cushion base and the backrest support, the automatic adjustment assembly comprising: Two angle adjusters are respectively installed on the seat base, and the central axes of the two angle adjusters are connected by a first synchronous shaft located between them; Two upper angle adjusters are installed on the lower side of the backrest support, and the central axes of the two upper angle adjusters are connected by a second synchronous shaft located between them. An intermediate connecting plate is located between the seat cushion base and the backrest support, with the upper and lower sides of the intermediate connecting plate respectively connected to the upper angle adjuster and the lower angle adjuster; A first driving device is connected to the first synchronous shaft and drives the first synchronous shaft to rotate. The second drive device is connected to the second synchronous shaft and drives the second synchronous shaft to rotate.

2. The automatically adjustable car seat according to claim 1, characterized in that, It also includes linkage mechanisms, which include: Two sets of seat cushion longitudinal beams, one end of each set of seat cushion longitudinal beams is pivotally connected to both sides of the backrest support, and the other end extends to the upper front end of the seat cushion base. A seat crossbeam located between two seat cushion longitudinal beams, the seat crossbeam being close to the front end of the seat cushion longitudinal beams; It also includes two sets of seat cushion uprights, one end of which is pivotally connected to the front end of the seat cushion longitudinal beam, and the other end of which is pivotally connected to the front end of the seat cushion base.

3. An automatically adjustable car seat according to claim 2, characterized in that, When the backrest support is flipped to a horizontal position, a portion of the seat cushion longitudinal beam extending horizontally descends to a position close to the bottom surface of the seat cushion base, and the seat cushion upright pivots to extend horizontally.

4. An automatically adjustable car seat according to claim 1, characterized in that, The first driving device drives the first synchronous shaft to rotate, thereby causing the intermediate connecting plate to rotate relative to the seat cushion base, and in turn causing the backrest support to flip; the second driving device drives the second synchronous shaft to rotate, thereby causing the backrest support to swing relative to the intermediate connecting plate.

5. An automatically adjustable car seat according to claim 1, characterized in that, It also includes a seat control unit, which controls the first drive device to operate in response to a backrest flattening / unfolding signal; or, the seat control unit controls the second drive device to operate in response to a backrest recline angle adjustment signal.

6. An automatically adjustable car seat according to claim 1, characterized in that, It also includes a seat cushion body covering the seat cushion base and a backrest body covering the backrest support.

7. An automatically adjustable car seat according to claim 6, characterized in that, The backrest body has a backrest tilt angle adjustment switch on its rear side or the lower side of the seat cushion body, and the backrest body has a backrest flattening / unfolding switch on its left / right side or the left / right side of the seat cushion body.

8. An automatically adjustable car seat according to claim 1, characterized in that, The angle adjuster is connected to the seat base via a lower connecting plate. The lower connecting plate is fixedly connected to the outer side of the seat base. The outer shell of the angle adjuster is fixed to the outer side of the lower connecting plate. The central axis of the angle adjuster is fixedly connected to the intermediate connecting plate.

9. An automatically adjustable car seat according to claim 1, characterized in that, The upper angle adjuster is connected to the backrest support via an upper connecting plate. The upper connecting plate is fixedly connected to the outer side of the backrest support. The central axis of the upper angle adjuster is fixedly connected to the upper connecting plate. The outer shell of the upper angle adjuster is fixed to the middle connecting plate.

10. A vehicle, characterized in that, Includes the automatically adjustable car seat as described in any one of claims 1-9.

Images