Automobile seat and automobile thereof

Abstract

The application relates to an automobile seat and an automobile thereof, which comprise a seat back assembly, a cushion framework assembly, a rotating support and a limiting component. The seat back assembly is provided with a locking plate, and the seat back assembly has a sitting position, a folding position and a flat position. The cushion framework assembly is provided with a cushion framework plate body. One end of the rotating support is rotationally connected with the cushion framework plate body, and the other end is rotationally connected with the locking plate. The limiting component is movably arranged between the rotating support and the cushion framework plate body. When the seat back assembly is switched between the sitting position and the folding position, the limiting component locks the rotating support and the cushion framework plate body, so that the locking plate rotates around the rotating support. When the seat back assembly is switched between the sitting position and the flat position, the limiting component unlocks the rotating support and the cushion framework plate body, so that the locking plate and the rotating support rotate around the cushion framework plate body as a whole. The automobile seat has flat functions in two directions.

Description

Technical Field

[0001] This application relates to the field of automotive seats, and more particularly to an automotive seat and an automotive thereof. Background Technology

[0002] As an essential component of automobiles, seats are increasingly demanded by the market for diverse functions to meet various usage scenarios, driven by the continuous development of the automotive industry. Currently, the middle seats in commercial vehicles lack backrest angle adjustment or only offer the ability to recline forward, limiting their function to mere seating. Because the backrest cannot recline forward, it lacks additional uses such as serving as a small table; and because it cannot recline backward, it cannot be used for resting. Summary of the Invention

[0003] This application provides a car seat and a car thereof, which can solve the problem in the related art that the seat back cannot be laid flat backward.

[0004] In a first aspect, embodiments of this application provide an automobile seat, comprising: a seat back assembly, a seat cushion frame assembly, a rotating bracket, and a limiting component. The seat back assembly is provided with a locking plate and has a seating position, a folded position, and a flat position. The seat cushion frame assembly is provided with a seat cushion frame plate. One end of the rotating bracket is rotatably connected to the seat cushion frame plate, and the other end is rotatably connected to the locking plate. The limiting component is movably disposed between the rotating bracket and the seat cushion frame plate. The limiting component is configured such that: when the seat back assembly switches between the seating position and the folded position, the limiting component locks the rotating bracket and the seat cushion frame plate, causing the locking plate to rotate around the rotating bracket; when the seat back assembly switches between the seating position and the flat position, the limiting component unlocks the rotating bracket and the seat cushion frame plate, causing the locking plate and the rotating bracket to rotate as a whole around the seat cushion frame plate. The seat back assembly can switch between a seated position and a stowed position, and between a seated position and a flat position: When the seat back assembly switches between the seated position and the stowed position, the limiting component locks the rotating bracket and the seat cushion frame plate, and the locking plate rotates around the rotating bracket; When the seat back assembly switches between the seated position and the flat position, the rotating bracket and the seat cushion frame plate unlock, and the locking plate and the rotating bracket rotate as a whole around the seat cushion frame plate, so that the car seat has a flat function in two directions.

[0005] In some embodiments, the limiting component includes: a sector-shaped groove and a pin, the sector-shaped groove being formed on the seat cushion frame plate, the sector-shaped groove having a first surface and a second surface perpendicular to each other; the pin passing through the sector-shaped groove and connected to a rotating bracket, the pin having a bearing surface; the sector-shaped groove and the pin are configured such that: when the seat back assembly switches between a sitting position and a stowed position, the bearing surface of the pin abuts against the first surface of the sector-shaped groove to lock the rotating bracket to the seat cushion frame plate; when the seat back assembly switches between a sitting position and a flat position, the pin rotates to cause the locking plate and the rotating bracket to rotate as a whole around the seat cushion frame plate.

[0006] In some embodiments, the pin component includes at least a semi-circular pin with a semi-circular cross-section and a plane that serves as a bearing surface, and the semi-circular pin is provided with a fan-shaped groove.

[0007] In some embodiments, a first boss is fixed to one end of the rotating bracket;

[0008] The shaft pin component further includes: a double-sided bushing, which is sleeved on the surface of the semi-circular shaft pin;

[0009] The semi-circular shaft pin is connected to the first boss via a cotter pin.

[0010] In some embodiments, a locking flange is fixed to one side of the locking plate, and the locking flange is in contact with the rotating bracket. The locking flange is configured such that when the seat back assembly switches between the sitting position and the flat position, the locking plate and the rotating bracket are locked together, so that the locking plate and the rotating bracket rotate around the seat cushion frame plate as a whole.

[0011] In some embodiments, the car seat further includes a locking structure disposed on a rotating bracket, the locking structure being configured such that when the seat back assembly is held in the sitting position, the locking plate is locked to the rotating bracket and the rotating bracket is locked to the seat cushion frame plate, thereby restricting the seat back assembly from switching to a stowed position or a flattened position.

[0012] In some embodiments, the locking structure includes: a connecting pin and a rotating rod, the connecting pin being disposed on the rotating bracket, a locking opening being provided at one end of the locking plate, and the connecting pin being used to engage with the locking opening; the rotating rod being disposed on the rotating bracket, and a receiving groove being provided on the seat cushion frame plate, and the rotating rod being used to engage with the receiving groove.

[0013] In some embodiments, a second boss is provided at one end of the rotating rod, the second boss is disposed in a receiving groove, and the receiving groove has a first position and a second position;

[0014] When the seat back assembly is in the sitting position, the second protrusion is in the first position, and the receiving groove restricts the rotation of the second protrusion; when the seat back assembly is switched between the sitting position and the folded position or between the sitting position and the flat position, the second protrusion is in the second position, and the second protrusion is rotatably connected in the receiving groove.

[0015] In some embodiments, the receiving groove includes a first groove and a second groove, the first groove and the second groove forming an inverted "V" shape, the first position being located at the bottom end of the first groove, and the second position being located at the connection between the first groove and the second groove and within the second groove.

[0016] Secondly, embodiments of this application provide a car that includes: a car seat as described above.

[0017] The beneficial effects of the technical solutions provided in this application include:

[0018] This application provides an embodiment of a car seat and a car thereof. The seat back assembly can switch between a sitting position and a stowed position, and between a sitting position and a flat position. When the seat back assembly switches between the sitting position and the stowed position, a limiting component locks the rotating bracket and the seat cushion frame plate, and the locking plate rotates around the rotating bracket. When the seat back assembly switches between the sitting position and the flat position, the rotating bracket and the seat cushion frame plate are unlocked, and the locking plate and the rotating bracket rotate as a whole around the seat cushion frame plate, so that the car seat has a flat position function in two directions. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of this application;

[0021] Figure 2 for Figure 1 Enlarged view of a portion of point A in the middle;

[0022] Figure 3 This is a schematic diagram of the overall structure provided for an embodiment of this application;

[0023] Figure 4 A schematic diagram of the seat back assembly and seat cushion frame assembly after separation, as provided in an embodiment of this application;

[0024] Figure 5This is a schematic diagram of the overall structure provided for an embodiment of this application;

[0025] Figure 6 for Figure 5 Enlarged view of a portion of point B in the middle;

[0026] Figure 7 This is a schematic diagram of the overall structure provided for an embodiment of this application;

[0027] Figure 8 This is a schematic diagram of the overall structure provided for an embodiment of this application;

[0028] Figure 9 for Figure 8 Schematic diagram of the partial explosion at point C;

[0029] Figure 10 This is a schematic diagram of a sector groove provided in an embodiment of this application;

[0030] Figure 11 A schematic diagram of the sector groove and semi-circular shaft pin provided in the embodiments of this application.

[0031] In the diagram: 1. Seat back assembly; 2. Locking plate; 20. Locking port; 21. Locking flange; 3. Rotating bracket; 30. First boss; 4. Connecting pin; 5. Single-sided bushing; 6. Waist-shaped bushing; 7. Double-sided bushing; 8. Sleeve; 9. Semi-circular pin; 10. Rotating rod; 100. Second boss; 11. Shaft; 12. Seat cushion frame assembly; 13. Seat cushion frame plate; 130. First flange of plate; 131. Second flange of plate; 132. Receiving groove; 133. Fan-shaped groove; 14. Seat cushion bend; 15. Hexagonal nut; 16. Cotter pin. Detailed Implementation

[0032] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0033] See Figures 1 to 11 This application provides a car seat and a car thereof, which can solve the problem in the related art that the seat back cannot be laid flat backward.

[0034] In a first aspect, embodiments of this application provide an automobile seat, comprising: a seat back assembly 1, a seat cushion frame assembly 12, a rotating bracket 3, and a limiting component. The seat back assembly 1 is provided with a locking plate 2 and has a seating position, a folded position, and a flat position. The seat cushion frame assembly 12 is provided with a seat cushion frame plate 13. One end of the rotating bracket 3 is rotatably connected to the seat cushion frame plate 13, and the other end is rotatably connected to the locking plate 2. The limiting component is movably disposed between the rotating bracket 3 and the seat cushion frame plate 13. The limiting component is configured such that: when the seat back assembly 1 switches between the seating position and the folded position, the limiting component locks the rotating bracket 3 and the seat cushion frame plate 13, causing the locking plate 2 to rotate around the rotating bracket 3; when the seat back assembly 1 switches between the seating position and the flat position, the limiting component unlocks the rotating bracket 3 and the seat cushion frame plate 13, causing the locking plate 2 and the rotating bracket 3 to rotate as a whole around the seat cushion frame plate 13.

[0035] In this application, the seat back assembly 1 can switch between a seated position and a stowed position, and between a seated position and a flat position: when the seat back assembly 1 switches between the seated position and the stowed position, the limiting component locks the rotating bracket 3 and the seat cushion frame plate 13, and the locking plate 2 rotates around the rotating bracket 3; when the seat back assembly 1 switches between the seated position and the flat position, the rotating bracket 3 and the seat cushion frame plate 13 are unlocked, and the locking plate 2 and the rotating bracket 3 rotate around the seat cushion frame plate 13 as a whole, so that the car seat has a flat function in two directions.

[0036] The locking plate 2 is fixed to the seat back assembly 1 and can move together with the seat back assembly 1; the seat cushion frame plate 13 is fixed to the seat cushion bend 14 on the seat cushion frame assembly 12. Furthermore, the seat cushion frame plate 13 is fixed with a first flange 130 and a second flange 131, both of which are in contact with the seat cushion frame assembly 12. This structure increases the contact area between the seat cushion frame plate 13 and the seat cushion frame assembly 12.

[0037] It should be noted that the seating position of the seat back assembly 1 refers to the position where the seat back assembly 1 is used for leaning against. Generally, when the seat back assembly 1 is in the seating position, the angle between the seat back assembly 1 and the seat cushion frame assembly 12 is between 100 degrees and 110 degrees. The folded position of the seat back assembly 1 refers to the seat back assembly 1 and the seat cushion frame assembly 12 being stacked. In this embodiment, the angle between the seat back assembly 1 and the seat cushion frame assembly 12 can be set to between 0 and 10 degrees. In this embodiment, when the seat back assembly 1 is in the unfolded position, the angle between the seat back assembly 1 and the seat cushion frame assembly 12 can be set to between 170 degrees and 180 degrees.

[0038] In this embodiment, the seat back assembly 1 has four switching states:

[0039] When the seat back assembly 1 switches from the sitting position to the folded position: When the seat back assembly 1 switches from the sitting position to the folded position, the limiting component locks the rotating bracket 3 to the seat cushion frame plate 13 so that the locking plate 2 rotates around the rotating bracket 3.

[0040] When the seat back assembly 1 switches from the folded position to the sitting position, the locking plate 2 rotates around the rotating bracket 3.

[0041] When the seat back assembly 1 switches from the sitting position to the flat position: When the seat back assembly 1 switches from the sitting position to the flat position, the limiting component unlocks the rotating bracket 3 from the seat cushion frame plate 13, so that the locking plate 2 and the rotating bracket 3 rotate around the seat cushion frame plate 13 as a whole.

[0042] When the seat back assembly 1 switches from the flat position to the sitting position: When the seat back assembly 1 switches from the flat position to the sitting position, the locking plate 2 and the rotating bracket 3 rotate as a whole around the seat cushion frame plate 13.

[0043] It should be noted that when the seat back assembly 1 switches between the flat position and the folded position, there are two switching states: first, it switches from the flat position to the sitting position, and then it switches from the sitting position to the folded position; when the seat back assembly 1 switches between the folded position and the flat position, there are two switching states: first, it switches from the folded position to the sitting position, and then it switches from the sitting position to the flat position.

[0044] Based on the above embodiments, in this embodiment, the car seat further includes a locking structure, which is disposed on the rotating bracket 3. The locking structure is configured such that when the seat back assembly 1 is held in the sitting position, the locking plate 2 is locked to the rotating bracket 3, and the rotating bracket 3 is locked to the seat cushion frame plate 13, so as to restrict the seat back assembly 1 from switching to the folded position or the flat position.

[0045] When the seat back assembly 1 is held in the sitting position, it means that the seat back assembly 1 can be leaned against and remains in the sitting position. At this time, the seat back assembly 1 will not switch to the folded or flat position.

[0046] In this embodiment, the locking structure includes a connecting pin 4 and a rotating rod 10.

[0047] Specifically, the connecting pin 4 is disposed on the rotating bracket 3, and a locking slot 20 is provided at one end of the locking plate 2. The connecting pin 4 is used to engage with the locking slot 20. In some embodiments, the connecting pin 4 can be fixed to the inner side of the rotating bracket 3; in other embodiments, a through hole can be provided on the locking plate 2, through which the connecting pin 4 passes and is connected and fixed to the locking plate 2 by a hexagonal nut 15. A locking slot 20 is provided at the bottom end of the locking plate 2. When the seat back assembly 1 needs to be held in the sitting position, the locking slot 20 engages with the connecting pin 4, and the connecting pin 4 can restrict the rotation of the locking plate 2.

[0048] The rotating rod 10 is mounted on the rotating bracket 3. A receiving groove 132 is provided on the seat cushion frame plate 13, and the rotating rod 10 is used to engage with the receiving groove 132. Further, the rotating rod 10 is connected to the locking plate 2 via a connecting rod structure. A waist-shaped groove is provided on the rotating bracket 3, and a waist-shaped bushing 6 is installed within the waist-shaped groove. The connecting rod structure passes through the waist-shaped bushing 6 of the rotating bracket 3. The rotating rod 10 is positioned on the outer side of the seat cushion frame plate 13, and a second protrusion 100 is provided at one end of the rotating rod 10. The receiving groove 132 is provided on the seat cushion frame plate 13, and the second protrusion 100 is positioned within the receiving groove 132, which has a first position and a second position. When the seat back assembly 1 is in the sitting position, the second protrusion 100 is in the first position, and the receiving groove 132 restricts the rotation of the second protrusion 100; when the seat back assembly 1 switches between the sitting position and the folded position or between the sitting position and the flat position, the second protrusion 100 is in the second position, and the second protrusion 100 is rotatably connected to the receiving groove 132.

[0049] In this embodiment, the connecting rod structure includes a shaft 11, one end of which is fixed to the rotating rod 10, and the other end is fitted with a single-sided bushing 5 and a sleeve 8, and a waist-shaped bushing 6 is inserted to connect with the locking plate 2.

[0050] In this embodiment, the receiving groove 132 includes a first groove and a second groove, and the first groove and the second groove form an inverted "V" shape. The first position is located at the bottom of the first groove, and the second position is located at the connection between the first groove and the second groove and inside the second groove. When the seat back assembly 1 needs to be held in the sitting position, the locking port 20 engages with the connecting pin 4. At this time, the second protrusion 100 is located at the first position of the first groove. The second protrusion 100 can be set as a strip shape. The shape of the first groove matches the shape of the second protrusion 100. Therefore, when the second protrusion 100 is at the first position of the first groove, the first groove can restrict the rotation of the second protrusion 100. When it is necessary to adjust the state of the seat back assembly 1, the seat back assembly 1 together with the locking plate 2 is moved upward. At this time, the locking port 20 disengages from the connecting pin 4. When the second protrusion 100 moves from the bottom of the first groove to the connection between the first groove and the second groove, the second protrusion 100 can rotate freely at this point and can move from the top of the second groove to the bottom of the second groove. Therefore, at this time, the seat back assembly 1 can be switched from the sitting position to the flat position or the folded position.

[0051] Based on the above embodiments, in this embodiment, the limiting component includes: a sector groove 133 and a shaft pin.

[0052] Specifically, the fan-shaped groove 133 is formed on the seat cushion frame plate 13, and the fan-shaped groove 133 has a first surface and a second surface that are perpendicular to each other; the axle pin passes through the fan-shaped groove 133, one end of the axle pin is movably connected to the fan-shaped groove 133, and the other end is connected to the rotating bracket 3. The axle pin includes at least a semi-circular axle pin 9. In this embodiment, the semi-circular axle pin 9 has a semi-circular cross-section, and its radius is equal to the radius of the fan-shaped groove 133. The plane of the semi-circular axle pin 9 is the abutting surface, and the semi-circular axle pin 9 is connected to the rotating bracket 3 after passing through the fan-shaped groove 133. In other embodiments, the axle pin includes at least a long strip-shaped axle pin, and the length of the axle pin is greater than the radius of the fan-shaped groove 133.

[0053] In this embodiment, the first surface is positioned at the top of the second surface. The axle pin has a supporting surface, and the sector groove 133 and the axle pin are configured such that when the seat back assembly 1 switches between a sitting position and a folded position, the supporting surface of the axle pin is in contact with the first surface of the sector groove 133, so that the rotating bracket 3 is locked to the seat cushion frame plate 13; taking the semi-circular axle pin 9 as an example: that is, when the seat back assembly 1 switches from a sitting position to a folded position or from a folded position to a sitting position, the first surface of the sector groove 133 blocks the rotation of the semi-circular axle pin 9.

[0054] When the seat back assembly 1 switches between the seating position and the flat position, the pivot pin rotates, causing the locking plate 2 and the rotating bracket 3 to rotate as a whole around the seat cushion frame plate 13. Taking the semi-circular pivot pin 9 as an example: when the seat back assembly 1 is in the seating position, the abutting surface of the semi-circular pivot pin 9 is in contact with the first surface, and the fan-shaped groove 133 also provides space for the semi-circular pivot pin 9 to rotate. Therefore, when the seat back assembly 1 switches from the seating position to the flat position, the semi-circular pivot pin 9 rotates, causing its abutting surface to move away from the first surface and gradually approach the second surface until it is in contact with the second surface. When the abutting surface is in contact with the second surface, the seat back assembly 1 is in the flat position. When the seat back assembly 1 switches from the flat position to the seating position, the semi-circular pivot pin 9 rotates, causing its abutting surface to move away from the second surface and gradually approach the first surface until it is in contact with the first surface. When the abutting surface is in contact with the first surface, the seat back assembly 1 is in the seating position.

[0055] Furthermore, a first boss 30 is fixed at one end of the rotating bracket 3; the shaft pin component also includes: a double-sided bushing 7, which is sleeved on the surface of the semi-circular shaft pin 9; the semi-circular shaft pin 9 is connected to the first boss 30 through a cotter pin 16.

[0056] A semi-circular hole is provided on the rotating bracket 3. The first boss 30 is fixed inside the rotating bracket 3 and located on one side of the semi-circular hole. A double-sided bushing 7 is also fixed inside the semi-circular hole. After one end of the semi-circular shaft pin 9 is movably connected to the fan-shaped groove 133, the other end passes through the double-sided bushing 7 and fits against the first boss 30. Insertion holes are provided on both the semi-circular shaft pin 9 and the first boss 30. By passing the cotter pin 16 through the insertion holes on the semi-circular shaft pin 9 and the first boss 30, the semi-circular shaft pin 9 and the first boss 30 can be fixed.

[0057] Based on the above embodiments, in this embodiment, a locking flange 21 is fixed on one side of the locking plate 2. The locking flange 21 is in contact with the rotating bracket 3. The locking flange 21 is configured such that when the seat back assembly 1 switches between the sitting position and the flat position, the locking plate 2 and the rotating bracket 3 are locked together, so that the locking plate 2 and the rotating bracket 3 rotate around the seat cushion frame plate 13 as a whole.

[0058] In this embodiment, the locking flange 21 is fixed to the locking plate 2 on the side near the back of the seat back assembly 1. When the seat back assembly 1 switches between the sitting position and the stowed position, there is no movement interference between the locking flange 21 and the rotating bracket 3. When the seat back assembly 1 switches between the sitting position and the flat position, since the locking flange 21 is in contact with the rotating bracket 3, the rotating bracket 3 will hold the locking flange 21, preventing the locking plate 2 and the seat back assembly 1 from rotating around the rotating bracket 3 towards the flat position. At the same time, since the semi-circular pin 9 can rotate when the seat back assembly 1 switches from the flat position to the sitting position, the semi-circular pin 9 rotates so that its abutting surface moves away from the first surface and gradually moves closer to the second surface until it is in contact with the second surface. Therefore, the rotating bracket 3 and the locking plate 2 form an integral unit that rotates around the seat cushion frame plate 13 towards the flat position.

[0059] In summary, the unlocking process of the seat back assembly 1 is as follows: Lift the seat back assembly 1 upwards along its designed angle direction. At this time, the locking port 20 of the locking plate 2 disengages from the connecting pin 4. Simultaneously, the second protrusion 100 at the front end of the rotating rod 10 also moves along the designed angle direction of the seat back assembly 1 to the top of the receiving groove 132. At this time, the seat back assembly 1 has two rotation methods: forward and backward, i.e., switching from the sitting position to the folded position and switching to the flat position. When switching from the sitting position to the folded position, the semi-circular pin 9 cannot rotate due to the limiting effect of the fan-shaped groove 133 of the seat cushion frame plate 13. Because of the limiting relationship of the cotter pin 16, the rotating bracket 3 cannot rotate. At this time, only the locking plate 2 can drive the rotating rod 10 to rotate, and the seat back assembly 1 rotates forward until it lies flat on the seat cushion frame assembly 12, switching to the folded state. When the seat is laid flat, the locking flange 21 of the locking plate 2 drives the rotating bracket 3 and the semi-circular shaft pin 9 to rotate. The first boss 30 at the front end of the rotating rod 10 moves along the receiving groove 132 of the seat frame plate 13 until the bottom of the second groove. At this time, the seat back assembly 1 rotates to the flat position and is simultaneously limited by the first flange 130 and the fan-shaped groove 133 of the seat frame plate 13, and cannot continue to rotate downward.

[0060] Secondly, embodiments of this application provide an automobile, which includes: the automobile seat provided in any of the above embodiments of this application.

[0061] In this application, the seat back assembly 1 can switch between a seated position and a stowed position, and between a seated position and a flat position: when the seat back assembly 1 switches between the seated position and the stowed position, the limiting component locks the rotating bracket 3 and the seat cushion frame plate 13, and the locking plate 2 rotates around the rotating bracket 3; when the seat back assembly 1 switches between the seated position and the flat position, the rotating bracket 3 and the seat cushion frame plate 13 are unlocked, and the locking plate 2 and the rotating bracket 3 rotate around the seat cushion frame plate 13 as a whole, so that the car seat has a flat function in two directions.

[0062] In this embodiment, the seat back assembly 1 has four switching states:

[0063] When the seat back assembly 1 switches from the sitting position to the folded position: When the seat back assembly 1 switches from the sitting position to the folded position, the limiting component locks the rotating bracket 3 to the seat cushion frame plate 13 so that the locking plate 2 rotates around the rotating bracket 3.

[0064] When the seat back assembly 1 switches from the folded position to the sitting position, the locking plate 2 rotates around the rotating bracket 3.

[0065] When the seat back assembly 1 switches from the sitting position to the flat position: When the seat back assembly 1 switches from the sitting position to the flat position, the limiting component unlocks the rotating bracket 3 from the seat cushion frame plate 13, so that the locking plate 2 and the rotating bracket 3 rotate around the seat cushion frame plate 13 as a whole.

[0066] When the seat back assembly 1 switches from the flat position to the sitting position: When the seat back assembly 1 switches from the flat position to the sitting position, the locking plate 2 and the rotating bracket 3 rotate as a whole around the seat cushion frame plate 13.

[0067] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0068] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0069] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A car seat, characterized in that, It includes: A seat back assembly (1) is provided with a locking plate (2), and the seat back assembly (1) has a sitting position, a folded position and a flat position; A seat frame assembly (12) is provided with a seat frame plate (13). Rotating bracket (3), one end of which is rotatably connected to the seat frame plate (13), and the other end is rotatably connected to the locking plate (2); A limiting component is movably disposed between the rotating bracket (3) and the seat cushion frame plate (13). The limiting component is configured such that: when the seat back assembly (1) switches between the sitting position and the folded position, the limiting component locks the rotating bracket (3) and the seat cushion frame plate (13) so that the locking plate (2) rotates around the rotating bracket (3); when the seat back assembly (1) switches between the sitting position and the flat position, the limiting component unlocks the rotating bracket (3) and the seat cushion frame plate (13) so that the locking plate (2) and the rotating bracket (3) rotate around the seat cushion frame plate (13) as a whole. The limiting component includes: A fan-shaped groove (133) is formed on the seat cushion frame plate (13), and the fan-shaped groove (133) has a first surface and a second surface that are perpendicular to each other; A pivot pin is provided, which passes through a fan-shaped groove (133) and is connected to a rotating bracket (3). The pivot pin has a bearing surface. The fan-shaped groove (133) and the axle pin are configured such that when the seat back assembly (1) switches between the sitting position and the folded position, the abutting surface of the axle pin is in contact with the first surface of the fan-shaped groove (133) so that the rotating bracket (3) is locked to the seat cushion frame plate (13); when the seat back assembly (1) switches between the sitting position and the flat position, the axle pin rotates so that the locking plate (2) and the rotating bracket (3) rotate as a whole around the seat cushion frame plate (13).

2. The car seat as described in claim 1, characterized in that: The pin component includes at least a semi-circular pin (9), the cross section of the semi-circular pin (9) is semi-circular, and the plane of the semi-circular pin (9) is a bearing surface, and the semi-circular pin (9) is provided with a fan-shaped groove (133).

3. The car seat as described in claim 2, characterized in that: The rotating bracket (3) has a first boss (30) fixed at one end. The shaft pin also includes: a double-sided bushing (7), which is sleeved on the surface of the semi-circular shaft pin (9); The semi-circular shaft pin (9) is connected to the first boss (30) via a cotter pin (16).

4. The car seat as described in claim 1, characterized in that: The locking plate (2) has a locking flange (21) fixed on one side. The locking flange (21) is in contact with the rotating bracket (3). The locking flange (21) is configured such that when the seat back assembly (1) switches between the sitting position and the flat position, the locking plate (2) and the rotating bracket (3) are locked together so that the locking plate (2) and the rotating bracket (3) rotate around the seat cushion frame plate (13) as a whole.

5. The car seat as described in claim 1, characterized in that, The car seat also includes: The locking structure is provided on the rotating bracket (3) and is configured such that when the seat back assembly (1) is held in the sitting position, the locking plate (2) is locked to the rotating bracket (3) and the rotating bracket (3) is locked to the seat cushion frame plate (13) to restrict the seat back assembly (1) from switching to the folded position or the flat position.

6. The car seat as described in claim 5, characterized in that: The locking structure includes: A connecting pin (4) is provided on the rotating bracket (3). A locking port (20) is provided at one end of the locking plate (2). The connecting pin (4) is used to engage with the locking port (20). A rotating rod (10) is provided on the rotating bracket (3). A receiving groove (132) is provided on the seat frame plate (13). The rotating rod (10) is used to engage with the receiving groove (132).

7. The car seat as described in claim 6, characterized in that: The rotating rod (10) has a second boss (100) at one end, and the second boss (100) is disposed in the receiving groove (132), which has a first position and a second position. When the seat back assembly (1) is in the sitting position, the second boss (100) is in the first position and the receiving groove (132) restricts the rotation of the second boss (100); when the seat back assembly (1) switches between the sitting position and the folded position or between the sitting position and the flat position, the second boss (100) is in the second position and the second boss (100) is rotatably connected in the receiving groove (132).

8. The automobile seat as described in claim 7, characterized in that: The receiving groove (132) includes a first groove and a second groove, which form an inverted "V" shape. The first position is located at the bottom of the first groove, and the second position is located at the connection between the first groove and the second groove and inside the second groove.

9. A car, characterized in that, It includes: The car seat as described in any one of claims 1-8.

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