Automobile rear seat and automobile

Abstract

The automobile rear-row seat comprises a lower angle adjusting device installed on the rear side of a seat cushion base, an upper angle adjusting device installed on the lower side of a backrest supporting base and a linkage unlocking assembly located between the upper angle adjusting device and the lower angle adjusting device, and the linkage unlocking assembly comprises a middle connecting plate, a lower connecting plate and a linkage unlocking assembly, the middle connecting plate is pivotally connected between the seat cushion base and the backrest supporting seat through the upper angle adjusting device and the lower angle adjusting device; the unlocking support is installed on the middle connecting plate and matched with the upper angle adjusting device to achieve locking and unlocking of the upper angle adjusting device; the driving assembly is in transmission connection with the unlocking support, and the driving assembly is matched with the lower angle adjusting device to move along with rotation of the lower angle adjusting device so as to drive the unlocking support to swing between the first position and the second position. Linkage action during flat turning operation can be achieved, the backrest is prevented from inclining after being flat turned, only the lower angle regulator needs to be controlled to be unlocked in the whole process, and operation is easy and convenient.

Description

Technical Field

[0001] This invention relates to the field of automotive parts design and manufacturing, and in particular to a rear seat for automobiles. Background Technology

[0002] Rear seats in cars require both practical storage and passenger comfort. On one hand, they need a wide range of reclining adjustment angles for the seatbacks. On the other hand, when loading large items, the rear seatbacks need to be folded completely flat to create a continuous storage space between the rear seats and the trunk. In this case, the overall height after folding down should be minimized to avoid protruding seat cushions or backrest edges obstructing item placement or even preventing the trunk lid from closing.

[0003] Currently, rear seats with folding and reclining functions use separate adjustment mechanisms for independent adjustment. When folding down, the seat must first be adjusted to its initial position using one switch after reclining, and then the other switch must be used to fold it down, making the process rather cumbersome. If the user folds down the seat without first adjusting the backrest to its initial position, the backrest will tilt and extend horizontally after folding down, making it inconvenient to place items. Summary of the Invention

[0004] Therefore, this invention proposes a car rear seat that, when folding down, only requires operating an adjustment switch to achieve a horizontally extended backrest.

[0005] To address the aforementioned technical problems, the present invention provides the following technical solution:

[0006] A rear seat for automobiles includes: a downward adjustment mechanism mounted on the rear side of a seat cushion base, an upward adjustment mechanism mounted on the lower side of a backrest support, and a linkage unlocking assembly located between the upward and downward adjustment mechanisms. The assembly includes: a central connecting plate pivotally connected between the seat cushion base and the backrest support via the upward and downward adjustment mechanisms; an unlocking bracket mounted on the central connecting plate, cooperating with the upward adjustment mechanism to lock and unlock it; and a drive assembly pulsatorically connected to the unlocking bracket, cooperating with the downward adjustment mechanism to move with the rotation of the downward adjustment mechanism, thereby driving the unlocking bracket to swing between a first position and a second position.

[0007] In some embodiments of the present invention, the drive assembly includes: a drive bracket rotatably mounted on an intermediate connecting plate, one end of the drive bracket being rotatably connected to a drive support shaft located on the intermediate connecting plate, and the end of the drive bracket away from the drive support shaft extending outward from the intermediate connecting plate; and a stop block fixedly mounted on the seat base, the stop block being adapted to block the drive bracket when the drive bracket rotates around the drive support shaft to a set position.

[0008] In some embodiments of the present invention, the drive bracket and the unlocking bracket are connected by a cable drive.

[0009] In some embodiments of the present invention, the unlocking bracket is sleeved on the central axis of the upper angle adjuster, and includes a first end and a second end located on both sides of the central axis; the first end of the unlocking bracket is connected to the pull cable, and the second end of the unlocking bracket is connected to the intermediate connecting plate through a reset member;

[0010] In the initial state, under the action of the reset member, the unlocking bracket remains in the state of locking the upper angle adjuster; when the central axis of the lower angle adjuster is rotated in a controlled manner, the driving component overcomes the action of the reset member and drives the unlocking bracket to the state of unlocking the upper angle adjuster.

[0011] In some embodiments of the present invention, the outer shell of the angle adjuster is fixedly connected to the seat base via a lower connecting plate, and the central axis of the angle adjuster is fixedly connected to the intermediate connecting plate.

[0012] In some embodiments of the present invention, the outer shell of the upper angle adjuster is fixedly connected to the intermediate connecting plate, and the central axis of the upper angle adjuster is connected to the backrest support through the upper connecting plate.

[0013] In some embodiments of the present invention, a first return spring is provided between the lower connecting plate and the central axis of the lower angle adjuster, the first return spring being adapted to maintain the force of forward rotation of the central axis of the lower angle adjuster; a second return spring is provided between the upper connecting plate and the central axis of the upper angle adjuster, the second return spring being adapted to maintain the force of forward rotation of the central axis of the upper angle adjuster.

[0014] 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 the upper end of the intermediate connecting plate on both sides, and the other end extending to the upper front end of the seat cushion base; a seat cushion crossbeam located between the two sets of seat cushion longitudinal beams, the seat 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 beams, and the other end of which is pivotally connected to the front end of the seat cushion base.

[0015] In some embodiments of the present invention, two sets of downward adjusting devices are provided, which are respectively located on both sides of the seat cushion base, and the central axes of the two downward adjusting devices are connected by a first synchronous shaft; two sets of upward adjusting devices are provided, which are respectively located on both sides of the backrest support, and the central axes of the two upward adjusting devices are connected by a second synchronous shaft.

[0016] The present invention also provides a vehicle including the aforementioned rear seat.

[0017] The technical solution of the present invention has the following technical effects compared with the prior art:

[0018] The rear seat and vehicle provided by this invention, through the inclusion of a linkage unlocking component, allow the seat to be folded flat. During this operation, a drive component activates an unlocking bracket to unlock the upper angle adjuster, enabling the backrest support to adjust its angle around the central axis of the upper angle adjuster to its initial position—a position where the backrest support is nearly perpendicular to the seat cushion base. Then, the backrest support swings around the central axis of the lower angle adjuster to the folded-flat state. This avoids the problem of excessive horizontal tilt of the backrest affecting storage when folding flat from a reclining position. Furthermore, the folding operation only requires unlocking the lower angle adjuster for linkage control, making it simple and convenient to operate. Attached Figure Description

[0019] 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:

[0020] Figure 1 This is a schematic diagram of a specific embodiment of the seat support frame for the rear seat of an automobile according to the present invention;

[0021] Figure 2 This is a schematic diagram of a specific embodiment of the adjustment component for the rear seat of an automobile according to the present invention;

[0022] Figure 3 This is a schematic diagram of a specific embodiment of the linkage unlocking component for the rear seats of a car according to the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the seat support frame of the rear seat of the automobile when it is tilted back.

[0024] Figure 5 This is a schematic diagram of the initial position of the seat support frame for the rear seat of an automobile according to the present invention;

[0025] Figure 6 This is a structural schematic diagram of the seat support frame of the rear seat of an automobile during the flattening process of the present invention;

[0026] Figure 7This is a schematic diagram of the seat support frame of the rear seat of a car in the flattened state. Detailed Implementation

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] The rear seat provided by this invention is suitable for rear seat adjustment scenarios in passenger cars, sports utility vehicles (SUVs), and other passenger vehicles, especially designed to meet the needs of reclining backrests for both sitting and folding forward to expand cargo space.

[0032] like Figure 1 As shown, the seat includes a seat support frame, which is made of steel. It includes a seat cushion base 10, a backrest support seat 20, and an adjustment assembly 30 located between the two. The seat cushion base 10 includes two seat cushion supports spaced apart from each other. These supports are made of cold-rolled steel sheet and have sufficient structural strength to accommodate floor mounting in vehicles. The backrest support seat 20 is constructed of steel profiles in a rectangular frame form, including two longitudinally extending backrest beams and a transverse backrest beam spanning between the longitudinal beams.

[0033] like Figure 2 As shown, the adjustment assembly 30 includes: a downward adjustment mechanism 31 installed on the rear side of the seat base 10, an upward adjustment mechanism 32 installed on the lower side of the backrest support 20, and an intermediate connecting plate 33 located between the seat base 10 and the backrest support 20. The upward adjustment mechanism 32 and the downward adjustment mechanism 31 are conventional GRD adjustment mechanisms, possessing reliable self-locking performance and torque bearing capacity. The upper side of the intermediate connecting plate 33 is fixedly connected to the housing of the upward adjustment mechanism 32 by bolts, while the lower side has a connecting slot that fits onto the central shaft of the downward adjustment mechanism 31, playing a crucial role in pivotally connecting the seat base 10 and the backrest support 20.

[0034] When the backrest support 20 is tilted forward under control, the lowering adjustment mechanism 31 is unlocked, causing its central axis to rotate in the first direction, driving the intermediate connecting plate 33 and the backrest support 20 to rotate forward until they are tilted to the flat position. When the backrest tilt angle needs to be adjusted, the upper adjustment mechanism 32 is unlocked and its central axis is rotated independently, causing the backrest support 20 to swing relative to the intermediate connecting plate 33 around the central axis of the upper adjustment mechanism 32. At this time, the intermediate connecting plate 33 remains fixed, and only the backrest angle changes (e.g., ...). Figure 4 (As shown). This car seat allows for independent control of individual reclining and overall flattening functions without the need for additional switching mechanisms, and its operation logic is simple.

[0035] Specifically, such as Figure 2 As 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.

[0036] Specifically, such as Figure 2 As shown, 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 middle connecting plate 33. The rigid connection between the upper connecting plate 39 and the adjuster ensures that the backrest support 20 does not shift when it swings, thus guaranteeing adjustment accuracy.

[0037] In one specific embodiment, in order to facilitate the flattening operation, the seat support frame further includes a first return coil spring installed between the central axis of the lower angle adjuster 31 and the lower connecting plate 38. The first return coil spring acts on the lower angle adjuster 31 to subject it to an elastic force that rotates in a first direction, so that when the lower angle adjuster 31 is in the unlocked state, it drives the backrest support 20 to have a forward swinging force.

[0038] In one specific implementation, such as Figure 4 , Figure 6 As shown, the seat support frame also includes a second return spring 37 installed between the central axis of the upper angle adjuster 32 and the upper connecting plate 39. The second return spring 37 acts on the upper angle adjuster 32 to subject it to an elastic force that rotates in the first direction, so that when the upper angle adjuster 32 is in the unlocked state, it drives the backrest support 20 to have a forward swinging force.

[0039] Specifically, the car seat also includes a first manual adjustment part (not shown in the figure) that triggers the unlocking of the downward adjustment mechanism 31, and a second manual adjustment part (not shown in the figure) that triggers the unlocking of the upward adjustment mechanism 32. The first manual adjustment part is, for example, a manual lever structure, and the second manual adjustment part is, for example, a knob structure. When a reclining adjustment is required, the second manual adjustment part with the knob structure is turned to trigger the unlocking of the upward adjustment mechanism 32. The user only needs to push it by hand or push the backrest backward to drive the movable disc of the upward adjustment mechanism 32 to rotate around the rotation axis, thereby realizing the reclining adjustment of the backrest. Similarly, when a flat adjustment is required, the first manual adjustment part is pulled to unlock the downward adjustment mechanism 31. Under the action of the first return spring, the backrest support 20 swings forward with the intermediate connecting plate 33 to the flat position.

[0040] Specifically, to more reliably adjust the seat to flatten or recline, the car seat also includes a linkage unlocking assembly, which includes an unlocking bracket 51 mounted on the intermediate connecting plate 33 and a drive assembly pulsatingly connected to the unlocking bracket 51. The unlocking bracket 51 cooperates with the upper angle adjuster 32 to lock and unlock it; the drive assembly cooperates with the lower angle adjuster 31 to move with the rotation of the lower angle adjuster 31, thereby driving the unlocking bracket 51 to swing between a first position (unlocked position) and a second position (locked position). Thus, when the lower angle adjuster 31 is unlocked and a flattening operation is performed, the drive assembly can drive the unlocking bracket 51 to unlock the upper angle adjuster 32. The upper angle adjuster 32 first drives the backrest support 20 to adjust its angle around its central axis to an initial state (i.e., the backrest support 20 is nearly perpendicular to the seat cushion base 10), and then the backrest support 20 swings around the central axis of the lower angle adjuster 31 to the flattened state.

[0041] Specifically, such as Figure 3 As shown, the unlocking bracket 51 is sleeved on the central axis of the upper angle adjuster 32. The unlocking bracket 51 has a trigger protrusion (not shown) on the side near the intermediate connecting plate 33. When the unlocking bracket 51 rotates to the first position under the action of the drive assembly, its trigger protrusion pushes against the tail end of the ratchet inside the upper angle adjuster 32 (i.e., the end opposite to the locking tooth end), applying a force opposite to the elastic force of the return spring (located inside the upper angle adjuster 32), causing the locking tooth end to completely disengage from the ratchet's tooth groove, thus unlocking the upper angle adjuster 32. At this time, the upper angle adjuster 32 can rotate in the first direction under the action of the second return spring 37, driving the backrest support 20 to swing forward to the initial position (e.g., as shown in the figure). Figure 5 (As shown).

[0042] Specifically, the drive assembly includes a drive bracket 52 rotatably mounted on the intermediate connecting plate 33 and a stop block 54 fixedly mounted on the lower connecting plate 38. One end of the drive bracket 52 is rotatably connected to a drive support shaft 53 located on the intermediate connecting plate 33, and the end of the drive bracket 52 away from the drive support shaft 53 extends outward from the intermediate connecting plate 33 and is connected to the unlocking bracket 51 via a cable 55; the stop block 54 is adapted to block the drive bracket 52 when the drive bracket 52 rotates around the drive support shaft 53 to a set position.

[0043] Specifically, the unlocking bracket 51 includes a first end and a second end located on both sides of the central axis of the upper angle adjuster 32; the first end of the unlocking bracket 51 is connected to the pull cable 55, and the second end of the unlocking bracket 51 is connected to the intermediate connecting plate 33 through a reset member 56; in the initial state, under the action of the reset member 56, the unlocking bracket 51 remains in the state of locking the upper angle adjuster 32; after the lower angle adjuster 31 is unlocked, when the lower angle adjuster 31 rotates in the first direction under the action of the first return spring, the driving bracket 52 swings with the intermediate connecting plate 33 to the position abutting against the stop block 54. At this time, when the intermediate connecting plate 33 continues to rotate, the driving bracket 52 overcomes the action of the reset member 56 and drives the unlocking bracket 51 to rotate through the pull cable 55, so that the upper angle adjuster 32 is unlocked, and the backrest support 20 returns to the initial state under the action of the second return spring 37 (e.g., Figure 5 (As shown). At this time, the intermediate connecting plate 33 continues to rotate in the first direction under the action of the first return spring, thereby driving the intermediate connecting plate 33 and the backrest support 20 to continue to swing forward. The drive bracket 52 swings with the intermediate connecting plate 33 to the position that crosses the stop block 54 (as shown). Figure 6As shown in the diagram, at this time, under the action of the reset component 56, the unlocking bracket 51 returns to the initial locked position of the upper angle adjuster 32. This prevents the backrest support 20 from rotating arbitrarily around the central axis of the upper angle adjuster 32 until the backrest support 20 swings to a horizontal or near-horizontal flattened position. The aforementioned linkage unlocking component avoids the problem of the backrest support 20 failing to return to its initial position when directly adjusting the flattening position while the backrest support 20 is in a reclining state, resulting in the backrest support 20 being unable to flatten (the extension direction of the backrest support 20 is tilted relative to the horizontal direction). Furthermore, the aforementioned flattening adjustment process only requires controlling the first manual adjustment unit to achieve linkage between the backrest's position from the reclining set angle to the initial position and from the initial position to the flattened position, making operation simple and convenient.

[0044] Specifically, the car seat also includes a linkage mechanism 40, which comprises two seat cushion longitudinal beams 41 and two seat cushion uprights 43, as well as a seat cushion crossbeam 42 located between the two seat cushion longitudinal beams 41 and a seat cushion front support 44 located between the two sets of seat cushion uprights 43. The seat cushion longitudinal beams 41 are constructed as L-shaped beams, with the seat crossbeam located near the front end of the seat cushion longitudinal beams 41. The seat cushion front support 44 is located in the middle area of ​​the seat cushion uprights 43. By setting the seat cushion crossbeam 42 and the seat cushion front support 44, the structural strength of the linkage mechanism 40 is improved, and the synchronous movement of the linkage mechanism 40 is also improved.

[0045] When the backrest support 20 is tilted forward in a controlled manner, the intermediate connecting plate 33 rotates along the central axis of the adjusting mechanism 31, causing the seat cushion longitudinal beam 41 to swing forward and 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 total lowering height of the seat is approximately the distance between the two pivot axes of the seat cushion upright 43. This linkage structure significantly reduces the overall height of the seat when it is tilted forward, meeting space storage needs and providing users with a more flexible solution for using in-vehicle space.

[0046] The present invention also provides a specific embodiment of a vehicle, which includes the aforementioned rear seats of an automobile, and will not be described in detail here.

[0047] 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. A rear seat for a car, characterized in that, It includes: A downward adjustment mechanism installed on the rear side of the seat cushion base, an upward adjustment mechanism installed on the underside of the backrest support, and a linkage unlocking component located between the upward and downward adjustment mechanisms, comprising: An intermediate connecting plate is pivotally connected between the seat cushion base and the backrest support via the upper and lower angle adjusters. The unlocking bracket installed on the intermediate connecting plate cooperates with the upper angle adjuster to lock and unlock the upper angle adjuster; A drive assembly is connected to the unlocking bracket, and the drive assembly cooperates with the angle adjuster to move as the angle adjuster rotates, thereby driving the unlocking bracket to swing between a first position and a second position.

2. A rear seat for automobiles according to claim 1, characterized in that, The driving component includes: A drive bracket is rotatably mounted on an intermediate connecting plate. One end of the drive bracket is rotatably connected to a drive support shaft located on the intermediate connecting plate, and the end of the drive bracket away from the drive support shaft extends out of the outer side of the intermediate connecting plate. A stop block is fixedly installed on the seat base, the stop block being adapted to block the drive bracket when the drive bracket rotates about the drive support shaft to a set position.

3. A rear seat for automobiles according to claim 2, characterized in that, The drive bracket and the unlocking bracket are connected by a cable drive.

4. A rear seat for automobiles according to claim 3, characterized in that, The unlocking bracket is sleeved on the central axis of the upper angle adjuster, and includes a first end and a second end located on both sides of the central axis; the first end of the unlocking bracket is connected to the pull cable, and the second end of the unlocking bracket is connected to the intermediate connecting plate through a reset component; In the initial state, under the action of the reset member, the unlocking bracket remains in the state of locking the upper angle adjuster; when the central axis of the lower angle adjuster is rotated in a controlled manner, the driving component overcomes the action of the reset member and drives the unlocking bracket to the state of unlocking the upper angle adjuster.

5. A rear seat for automobiles according to claim 1, characterized in that, The housing of the angle adjuster is fixedly connected to the seat base via the lower connecting plate, and the central axis of the angle adjuster is fixedly connected to the middle connecting plate.

6. A rear seat for a car according to claim 5, characterized in that, The outer shell of the upper angle adjuster is fixedly connected to the middle connecting plate, and the central axis of the upper angle adjuster is connected to the backrest support through the upper connecting plate.

7. A rear seat for a car according to claim 6, characterized in that, A first return spring is provided between the lower connecting plate and the central axis of the lower angle adjuster. The first return spring is adapted to maintain the forward rotation force of the central axis of the lower angle adjuster. A second return spring is provided between the upper connecting plate and the central axis of the upper angle adjuster. The second return spring is adapted to maintain the forward rotation force of the central axis of the upper angle adjuster.

8. A rear seat for automobiles according to claim 1, characterized in that, It also includes linkage mechanisms, including: Two sets of seat cushion longitudinal beams, one end of each set of seat cushion longitudinal beams is pivotally connected to the upper end of the intermediate connecting plate on both sides, and the other end extends to the upper front end of the seat cushion base. A seat crossbeam located between two sets of 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.

9. A rear seat for a car according to claim 1, characterized in that, Two sets of downward adjusting mechanisms are provided, located on both sides of the seat cushion base, and the central axes of the two downward adjusting mechanisms are connected by a first synchronous shaft; two sets of upward adjusting mechanisms are provided, located on both sides of the backrest support, and the central axes of the two upward adjusting mechanisms are connected by a second synchronous shaft.

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

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