Seat turntable and vehicle seat

Abstract

The present invention discloses a seat turntable and an automotive seat. The seat turntable includes an upper plate (110) and a lower plate (120) that can rotate relative to each other, and further includes an inner pressure plate (140) and an outer pressure plate (130). The upper plate 110 includes an inner annular plate portion (112) and an outer ring portion (113). The inner pressure plate (140) is fixedly connected to the lower plate (120) and presses against the inner annular plate portion (112) in the direction of the lower plate (120). The outer pressure plate (130) is fixedly connected to the lower plate (120) and presses against the outer ring portion (113) in the direction of the lower plate (120). Through the structural optimization of the seat turntable, the Z-direction clearance of the seat turntable is effectively reduced, so that there is no obvious shaking amount of the turntable when the seat is shaken, and the user experience is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle seats, and particularly to a seat turntable and an automobile seat. Background Art

[0002] At present, most automobile seats have a seat rotation function to meet the needs of users. The rotation function of the automobile seat is realized by a seat turntable. The seat turntable includes an upper disk and a lower disk. Generally, the lower disk is fixed, the upper disk is fixed to the seat frame of the seat, and the upper disk and the lower disk can rotate relative to each other, so as to realize the rotation of the seat.

[0003] In the existing seat turntable, the upper disk cannot effectively press the lower disk, resulting in a large gap in the Z direction of the turntable, and there is an obvious shaking amount of the turntable when the seat rotates; in addition, most of the existing turntables only have an anti-separation function at three positions of 0°, 90° and 180°, and do not have an anti-separation function at other positions, and the safety factor is relatively low. Summary of the Invention

[0004] The purpose of the present invention is to provide a seat turntable and an automobile seat. By optimizing the structure of the seat turntable, the Z-direction gap of the seat turntable is effectively reduced, so that there is no obvious shaking amount of the turntable when the seat is shaken, and the user experience is improved.

[0005] To solve the above technical problems, the present invention provides a seat turntable, which includes an upper disk and a lower disk that can rotate relative to each other, and also includes an inner pressing disk and an outer pressing disk; the upper disk includes an inner annular plate portion and an outer ring portion, the inner pressing disk is fixedly connected to the lower disk and presses against the inner annular plate portion in the direction of the lower disk, and the outer pressing disk is fixedly connected to the lower disk and presses against the outer ring portion in the direction of the lower disk.

[0006] The seat turntable provided by the present invention is provided with an inner pressing disk and an outer pressing disk. The inner pressing disk presses the inner annular plate portion of the upper disk in the direction of the lower disk, the outer pressing disk presses the outer ring portion of the upper disk in the direction of the lower disk, and both the inner pressing disk and the outer pressing disk are relatively fixed to the lower disk. In this way, the inner ring part and the outer ring part of the upper disk are both pressed towards the lower disk, which can effectively reduce the gap between the upper disk and the lower disk in the axial direction, which is usually called the Z-direction gap in the industry. When the seat is shaken, the turntable will not have an obvious shaking amount, and the user experience is better.

[0007] The seat turntable as described above further includes at least one rolling assembly. The rolling assembly includes a plurality of rolling elements circumferentially arranged around the central axis of the upper disk, and the rolling elements are rollably arranged relative to the outer ring portion; the rolling assembly is located between the outer ring portion and the outer pressing disk, or between the outer ring portion and the lower disk.

[0008] The seat turntable as described above, the rolling assembly includes a cage, and each of the rolling elements is rollably installed in the cage.

[0009] The seat turntable as described above, wherein there are two rolling components, one of the rolling components is located between the outer ring part and the outer pressure plate, and the other rolling component is located between the outer ring part and the lower plate.

[0010] The seat turntable as described above, wherein at least one of the outer ring part and the outer pressure plate has an annular raceway; at least one of the outer ring part and the lower plate has an annular raceway; the cross-sectional shape of the annular raceway matches the outer shape of the corresponding rolling element.

[0011] The seat turntable as described above, wherein the outer pressure plate includes an outer pressure part, a first transition part, and a first connection part. The outer pressure part is used to press against the outer ring part. The first transition part connects the outer pressure part and the first connection part. The first connection part is located on the outer periphery of the upper plate, and the first connection part is used for fixed connection with the lower plate.

[0012] The seat turntable as described above, wherein the first connection part includes a plurality of first insertion parts arranged along the circumferential direction of the outer pressure plate. The first insertion parts extend along the axial direction of the outer pressure plate. The lower plate has a first insertion opening corresponding to the first insertion part, and the first insertion part is inserted into the first insertion opening.

[0013] The seat turntable as described above, wherein the first transition part has a trough-shaped structure with an opening facing downwards. The outer ring part includes a flange bent towards the outer pressure plate. The flange is located in the trough-shaped structure, and at least one of the flange and the first transition part is an annular structure.

[0014] The seat turntable as described above, wherein a lubricating ring or a rolling component is provided between the inner pressure plate and the inner annular plate part.

[0015] The seat turntable as described above, wherein the inner pressure plate includes an inner pressure part, a second transition part, and a second connection part. The lubricating ring is provided between the inner pressure part and the inner annular plate part. The second transition part connects the inner pressure part and the second connection part. The second connection part is located on the inner periphery of the inner annular plate part, and the second connection part is used for fixed connection with the lower plate.

[0016] The seat turntable as described above, wherein the second connection part includes a plurality of second insertion parts arranged along the circumferential direction of the inner pressure plate. The second insertion parts extend along the axial direction of the inner pressure plate. The lower plate has a second insertion opening corresponding to the second insertion part, and the second insertion part is inserted into the second insertion opening.

[0017] The seat turntable as described above, wherein a lubricating ring is clamped at the inner hole edge of the inner annular plate part.

[0018] The seat turntable described above further includes a locking pin assembly. The locking pin assembly includes a locking bracket, a locking pin, and a driving member. The locking pin is fixedly provided on the locking bracket. The locking bracket is rotationally connected to the lower disk through a rotating shaft. The rotating shaft passes through the upper disk and is fixed to the fixing member of the upper disk. The pin shaft of the locking pin passes through the upper disk, and a clamping groove for the locking pin to be inserted into is provided on the lower disk. The driving member is used to drive the locking bracket to rotate so as to drive the locking pin to disengage from the clamping groove.

[0019] The seat turntable described above, the locking pin assembly further includes an elastic reset member. One end of the elastic reset member is connected to the fixing member, and the other end is connected to the part of the pin shaft passing through the upper disk. The elastic reset member is used to drive the locking bracket to rotate so that the locking pin is inserted into the clamping groove when the driving force of the driving member disappears.

[0020] The seat turntable described above, the driving member is a manual cable or an unlocking motor.

[0021] The seat turntable described above further includes a driving motor and a transmission component. The driving motor drives the upper disk to rotate relative to the lower disk through the transmission component.

[0022] The present invention further provides an automobile seat, including a seat frame, and further including the seat turntable described in any one of the above. The upper disk is fixedly connected to the seat frame, and the lower disk is used to be fixedly connected to an automobile body or a slide rail.

[0023] Since the above seat turntable has the above technical effects, the automobile seat including this seat turntable also has the same technical effects, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of an embodiment of the seat turntable provided by the present invention;

[0025] Figure 2 is Figure 1 an exploded view of the seat turntable shown;

[0026] Figure 3 is Figure 1 a schematic cross-sectional view of the seat turntable shown;

[0027] Figure 4 is Figure 3 a partial enlarged view of part A in ;

[0028] Figure 5 is Figure 4 a partial enlarged view of the area where the outer ring part of the upper disk is located in ;

[0029] Figure 6 is a schematic structural diagram of another embodiment of the seat turntable provided by the present invention.

[0030] Description of the reference numerals:

[0031] The upper disc 110, the upper disc body 111, the inner annular plate portion 112, the outer ring portion 113, the flanging 1131;

[0032] The lower disc 120, the first socket interface 121, the second socket interface 122, the second raceway 123;

[0033] The outer pressure disc 130, the outer pressure portion 131, the first raceway 1311, the first transition portion 132, the first socket portion 133;

[0034] The inner pressure disc 140, the inner pressure portion 141, the second transition portion 142, the second socket portion 143;

[0035] The first rolling assembly 150A, the first rolling element 151A, the first cage 152A;

[0036] The second rolling assembly 150B, the second rolling element 151B, the second cage 152B;

[0037] The lubricating ring piece 160, the lubricating ring 170;

[0038] The lock bracket 181, the lock pin 182, the rotating shaft 183, the fixing member 184, the slot bracket 185, the slot 1851, the elastic reset member 186, the connecting member 187;

[0039] The drive motor 191, the output gear 192, the internal gear ring 193. Detailed implementation manners

[0040] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0041] For the convenience of understanding and concise description, the following will be described in conjunction with the vehicle seat and the seat. The beneficial effects will not be repeated.

[0042] Please refer to Figure 1 and Figure 2 , Figure 1 which is a schematic structural diagram of an embodiment of the seat turntable provided by the present invention; Figure 2 is Figure 1 an exploded view of the seat turntable shown.

[0043] The rotation function of the vehicle seat can be realized by the seat turntable. The seat turntable includes an upper disc 110 and a lower disc 120. Generally, when the seat turntable is applied to a vehicle seat, the lower disc 120 is relatively fixed, and specifically, it can be fixed on the slide rail of the vehicle or the vehicle body. The upper disc 110 is fixedly connected to the seat frame of the seat, and the rotation of the seat is realized by the relative rotation of the upper disc 110 and the lower disc 120.

[0044] In this embodiment, in addition to the upper disk 110 and the lower disk 120, the seat turntable further includes an inner pressure disk 140 and an outer pressure disk 130.

[0045] Please also refer to Figures 3 to 5 , Figure 3 for Figure 1 the schematic cross-sectional view of the seat turntable shown;

[0046] Figure 4 for Figure 3 the partial enlarged view of part A in Figure 5 for Figure 4 the partial enlarged view of the area where the outer ring part of the upper disk is located in

[0047] The upper disk 110 has an annular structure and includes an upper disk main body 111, an inner annular plate part 112, and an outer ring part 113. The inner annular plate part 112 is fixedly connected to the inner circumference of the upper disk main body 111, and the outer ring part 113 is fixedly connected to the outer circumference of the upper disk main body 111.

[0048] The aforementioned inner pressure disk 140 is fixedly connected to the lower disk 120 and is used to press against the inner annular plate part 112 in the direction of the lower disk 120. The aforementioned outer pressure disk 130 is also fixedly connected to the lower disk 120 and is used to press against the outer ring part 113 in the direction of the lower disk 120.

[0049] In this way, both the inner ring part and the outer ring part of the upper disk 110 are pressed downward against the lower disk 120, which can effectively reduce the Z-direction clearance between the upper disk 110 and the lower disk 120. It can be understood as the clearance in the height direction of the seat turntable. When the seat is shaken, the turntable will not have an obvious shaking amount, which is beneficial to improving the user experience.

[0050] Since the upper disk 110 and the lower disk 120 can rotate relative to each other, in order to reduce the rotational resistance between the two, at least one rolling component is provided on the seat turntable. Specifically, in this embodiment, the seat turntable is provided with two rolling components, hereinafter referred to as the first rolling component 150A and the second rolling component 150B. The first rolling component 150A is arranged between the outer ring part 113 of the upper disk 110 and the outer pressure disk 130, and the second rolling component 150B is arranged between the outer ring part 113 of the upper disk 110 and the lower disk 120.

[0051] Each rolling component includes a plurality of rolling elements circumferentially arranged around the central axis of the upper disk 120. For the convenience of installing the rolling elements, each rolling component can also be provided with a cage. Each rolling element is rotatably fitted in the cage. Obviously, the cage is of an annular structure.

[0052] Specifically, the first rolling assembly 150A includes a plurality of first rolling elements 151A and a first cage 152A. The plurality of first rolling elements 151A are all rotatably fitted in the first cage 152A. The first cage 152A installed with the first rolling elements 151A is located between the outer ring portion 113 and the outer pressure plate 130. When the upper plate 110 rotates relative to the lower plate 120, the first rolling elements 151A can roll between the outer ring portion 113 and the outer pressure plate 130 to reduce the frictional force between the outer ring portion 113 and the outer pressure plate 130. It can be understood that the outer pressure plate 130 presses the outer ring portion 113 towards the lower plate 120 by pressing the first rolling elements 151A.

[0053] Specifically, the second rolling assembly 150B includes a plurality of second rolling elements 151B and a second cage 152B. The plurality of second rolling elements 151B are all rotatably fitted in the second cage 152B. The second cage 152B installed with the second rolling elements 151B is located between the outer ring portion 113 and the lower plate 120. When the upper plate 110 rotates relative to the lower plate 120, the second rolling elements 151B can roll between the outer ring portion 113 and the lower plate 120 to reduce the frictional force between the outer ring portion 113 and the lower plate 120, facilitating the rotation of the upper plate 110 relative to the lower plate 120, thereby driving the seat to rotate.

[0054] As Figure 4 and Figure 5 shown, in this embodiment, the first rolling elements 151A and the second rolling elements 151B are specifically selected as spheres, which is convenient for setting.

[0055] In this embodiment, a first raceway 1311 is further provided on the outer pressure plate 130 for cooperating with the first rolling elements 151A, and a second raceway 123 is provided on the lower plate 120 for cooperating with the second rolling elements 151B. It can be understood that the cross-sectional shapes of the first raceway 1311 and the second raceway 123 match the outer shapes of the corresponding rolling elements; that is, on the basis that the first rolling elements 151A and the second rolling elements 151B are set as spheres, the cross-sectional shapes of the first raceway 1311 and the second raceway 123 are correspondingly set as spherical concave structures. For the convenience of matching with a plurality of rolling elements, both the first raceway 1311 and the second raceway 123 are in an annular structure. The setting of the raceways can limit the rolling range of the rolling elements and prevent the rolling elements from deviating from their positions.

[0056] In other embodiments, an annular raceway that cooperates with the first rolling element 151A or the second rolling element 151B may also be provided on the wall surface of the outer ring portion 113. In practical applications, only one annular raceway that matches the first rolling element 151A may be provided, or two may be provided. When only one is provided, it may be provided on the outer pressure plate 130 as in the illustrated solution, or only on the wall surface of the outer ring portion 113 facing the outer pressure plate 130. If two are provided, that is, both on the outer ring portion 113 and the outer pressure plate 130; correspondingly, one or two annular raceways that match the second rolling element 151B may also be provided.

[0057] In addition to the above spherical structure, the first rolling element 151A and the second rolling element 151B may also be replaced with other rolling elements having rolling characteristics such as tapered rollers, and will not be described one by one.

[0058] In this embodiment, the outer pressure plate 130 includes an outer pressing portion 131, a first transition portion 132, and a first connecting portion. Among them, the outer pressing portion 131 is used to press against the outer ring portion 113, that is, the aforementioned first rolling assembly 150A is specifically located between the outer pressing portion 131 and the outer ring portion 113, and the first raceway 1311 is specifically formed on the outer pressing portion 131; the first transition portion 132 is used to connect the outer pressing portion 131 and the first connecting portion, and the first connecting portion is located on the outer periphery of the upper plate 110 and is used to be fixedly connected to the lower plate 120.

[0059] Specifically, the first connecting portion includes a plurality of first insertion portions 133 arranged circumferentially along the outer pressure plate 130. The first insertion portions 133 extend along the axis direction of the outer pressure plate 130. A first insertion opening 121 corresponding to the first insertion portion 133 is provided on the lower plate 120. After the outer pressure plate 130 is buckled on the outer ring portion 113 of the upper plate 110, its first insertion portion 133 can be inserted into the first insertion opening 121 of the lower plate 120 to define the relative position between the outer pressure plate 130 and the lower plate 120, thereby restricting the Z-direction clearance between the upper plate 110 and the lower plate 120. Specifically, subsequently, the first insertion portion 133 and the first insertion opening 121 can be fixed by welding, or the first insertion portion 133 and the first insertion opening 121 can be in interference fit.

[0060] When specifically arranged, the plurality of first insertion portions 133 can be evenly arranged circumferentially along the outer pressure plate 130 to make the force between the outer pressure plate 130 and the lower plate 120 uniform and ensure stability.

[0061] Such as Figure 4 and Figure 5As shown, in this embodiment, the first transition portion 132 of the outer pressure plate 130 has a groove-shaped structure with an opening facing, and the outer ring portion 113 of the upper plate 110 includes a flanging 1131 bent in the direction of the outer pressure plate 130. The flanging 1131 is located within the groove-shaped structure of the first transition portion 132. In this way, the relative position of the upper plate 110 and the outer pressure plate 130 in the axial direction can be restricted. When specifically setting, at least one of the first transition portion 132 and the flanging 1131 is an annular structure. In this way, the position of the upper plate 110 in the axial direction can be restricted on a full circle, ensuring that the seat turntable has an anti-separation function at any angle on a full circle, that is, the function of preventing the upper plate 110 from separating from the lower plate 120, which can guarantee the safety and reliability of the seat turntable during use.

[0062] In this embodiment, a lubricating ring piece 160 is provided between the inner pressure plate 140 and the inner annular plate portion 112 of the upper plate 110. In this way, during the rotation of the upper plate 110 relative to the lower plate 120, the setting of the lubricating ring piece 160 can reduce the frictional resistance between the upper plate 110 and the inner pressure plate 140, and can also slow down the wear of the inner pressure plate 140 and the upper plate 110.

[0063] In other embodiments, the lubricating ring piece 160 can also be replaced by other structures that can reduce the rotational resistance, such as rolling components, similar to the aforementioned first rolling component 150A and second rolling component 150B, which will not be elaborated in detail.

[0064] In this embodiment, a lubricating ring 170 can also be clamped on the inner hole edge of the inner annular plate portion 112 of the upper plate 110 to reduce the frictional resistance between the upper plate 110 and the lower plate 120 at this part. The lubricating ring 170 has an annular ring structure with an annular groove on its outer peripheral wall and is clamped and fixed to the inner annular plate portion 112 through the annular groove.

[0065] In this embodiment, the inner pressure plate 140 includes an inner pressure portion 141, a second transition portion 142, and a second connection portion. Among them, the lubricating ring piece 160 is provided between the inner pressure portion 141 and the inner annular plate portion 112. The second transition portion 142 connects the inner pressure portion 141 and the second connection portion. The second connection portion is located on the inner circumference of the inner annular plate portion 112 and is used for fixedly connecting with the lower plate 120.

[0066] Specifically, the second connection portion of the inner pressure plate 140 includes a plurality of second insertion portions 143 arranged circumferentially along the inner pressure plate 140. The lower plate 120 is provided with second insertion openings 122 corresponding to the second insertion portions 143. The second insertion portions 143 are inserted into the second insertion openings 122 to define the relative position of the inner pressure plate 140 and the lower plate 120, thereby restricting the Z-direction clearance between the upper plate 110 and the lower plate 120. Specifically, subsequently, the second insertion portions 143 and the second insertion openings 122 can be fixed by welding, or the second insertion portions 143 and the second insertion openings 122 can be in interference fit.

[0067] During specific setting, a plurality of second insertion parts 143 can be evenly arranged along the circumferential direction of the inner pressure plate 140, so as to make the force between the inner pressure plate 140 and the lower plate 120 uniform and ensure stability.

[0068] Reference Figure 1 and Figure 2 In this embodiment, the seat turntable further includes a locking pin assembly, and the relative positions of the upper plate 110 and the lower plate 120 are locked or unlocked through the locking pin assembly, so as to facilitate locking the relative positions between the upper plate 110 and the lower plate 120 after adjusting the seat rotation angle, or releasing the relative positions between the upper plate 110 and the lower plate 120 when the rotation angle needs to be adjusted.

[0069] In this embodiment, the locking pin assembly includes a lock bracket 181, a locking pin 182 and a driving member. Among them, the locking pin 181 is fixedly arranged on the lock bracket 181, and the lock bracket 181 is rotatably connected to the lower plate 120 through a rotating shaft 183. The axis direction of the rotating shaft 183 is parallel to the axis direction of the lower plate 120, that is, parallel to the axis direction of the upper plate 110.

[0070] Specifically, the rotating shaft 183 is fixed to the lower plate 120, passes through the upper plate 110 and is fixed to the fixing member 184 of the upper plate 110. The fixing method of the fixing member 184 and the rotating shaft 183 can be in the form of thread fit, which is convenient for disassembly and assembly.

[0071] A card slot frame 185 is fixed on the lower plate 120. The card slot frame 185 has a card slot, and the pin body part of the locking pin 182 can be inserted into the card slot of the card slot frame 185.

[0072] The pin shaft of the locking pin 182 installed on the lock bracket 181 also passes through the upper plate 110 to facilitate connection with the driving member.

[0073] During actual application, the driving member specifically acts on the pin shaft part of the locking pin 182 passing through the upper plate 110 to pull the locking pin 182 and the lock bracket 181 to rotate together around the rotating shaft 183 to disengage from the card slot of the card slot frame 185, realizing the unlocking function.

[0074] Obviously, to avoid interference and enable the locking pin 182 to rotate with the lock bracket 181 around the rotating shaft 183, the through hole on the upper plate 110 that cooperates with the locking pin 182 is an arc-shaped hole.

[0075] Specifically, the locking pin assembly further includes an elastic reset member 186 to drive the locking pin 182 and the lock bracket 181 to rotate and reset after the driving force of the driving member disappears, so that the locking pin 182 is reinserted into the card slot of the card slot frame 185 to lock the relative positions of the upper plate 110 and the lower plate 120.

[0076] The elastic reset member 186 can specifically adopt the form of a leaf spring, which is sleeved on the fixing member 184. One end of it is fixedly connected to the fixing member 184, and the other end is connected to the part of the pin shaft of the locking pin 182 that passes through the upper plate 110.

[0077] In application, the driving member for the rotation of the locking pin 182 and the locking bracket 181 can adopt the form of a manual cable, that is, the unlocking is carried out manually. The driving member can also adopt an unlocking motor to achieve unlocking electrically.

[0078] In practical application, the seat turntable can be of a manual type.

[0079] Please refer to Figure 6 , Figure 6 which is a schematic structural diagram of another embodiment of the seat turntable provided by the present invention.

[0080] In this embodiment, the structural composition and setting method of the seat turntable and the like can all refer to the foregoing embodiment. The difference between the two is that in this embodiment, the seat turntable adopts an electric drive method. Specifically, a driving motor 191 and a transmission component are arranged in the central through-hole area of the upper plate 110 and the lower plate 120, and the driving motor 191 drives the upper plate 110 to rotate relative to the lower plate 120 through the transmission component.

[0081] Specifically, the driving motor 191 can be installed on the upper plate 110. An output gear 192 can be fixedly connected to the output shaft of the driving motor 191. An internal gear ring 193 is fixedly connected to the edge of the central hole of the lower plate 120, and the internal gear ring 193 is meshed and matched with the output gear 192.

[0082] When the seat needs to be rotated, first unlock the locking between the upper plate 110 and the lower plate 120, start the driving motor 191, drive the output gear 192 to rotate. Due to the meshing of the output gear 192 and the internal gear ring 193, and since the lower plate 120 is relatively fixed, under the action of gear meshing, the upper plate 110 can rotate relative to the lower plate 120.

[0083] Of course, the driving motor 191 can also be installed on the lower plate 120, and the internal gear ring 193 that cooperates with the output gear 192 of the driving motor 191 can be installed on the upper plate 110.

[0084] The above has introduced the seat turntable and the vehicle seat provided by the present invention in detail. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. Seat turntable, comprising an upper plate (110) and a lower plate (120) that can rotate relative to each other, characterized in that, It further includes an inner pressure plate (140) and an outer pressure plate (130); the upper plate 110 includes an inner annular plate portion (112) and an outer ring portion (113), the inner pressure plate (140) is fixedly connected to the lower plate (120) and presses against the inner annular plate portion (112) in the direction of the lower plate (120), and the outer pressure plate (130) is fixedly connected to the lower plate (120) and presses against the outer ring portion (113) in the direction of the lower plate (120); It further includes at least one rolling assembly, the rolling assembly includes a plurality of rolling elements circumferentially arranged around the central axis of the upper plate (110), and the rolling elements are rollably arranged relative to the outer ring portion (113); the rolling assembly is located between the outer ring portion (113) and the outer pressure plate (130), or between the outer ring portion (113) and the lower plate (120); There are two rolling assemblies, one of the rolling assemblies is located between the outer ring portion (113) and the outer pressure plate (130), and the other rolling assembly is located between the outer ring portion (113) and the lower plate (120); The outer pressure plate (130) includes an outer pressure portion (131), a first transition portion (132) and a first connection portion, the outer pressure portion (131) is used to press against the outer ring portion (113), the first transition portion (132) connects the outer pressure portion (131) and the first connection portion, the first connection portion is located on the outer periphery of the upper plate (110), and the first connection portion is used for fixed connection with the lower plate (120); A lubricating ring piece (160) or a rolling assembly is provided between the inner pressure plate (140) and the inner annular plate portion (112).

2. The seat turntable according to claim 1, wherein The rolling assembly includes a cage, and each of the rolling elements is rollably installed in the cage.

3. The seat turntable according to claim 1, characterized in that, At least one of the outer ring portion (113) and the outer pressure plate (130) has an annular raceway; at least one of the outer ring portion (113) and the lower plate (120) has an annular raceway; the cross-sectional shape of the annular raceway matches the outer shape of the corresponding rolling element.

4. The seat turntable according to any one of claims 1-3, characterized in that, The first connection portion includes a plurality of first insertion portions (133) arranged circumferentially along the outer pressure plate (130), the first insertion portions (133) extend along the axis direction of the outer pressure plate (130), the lower plate (120) has a first insertion opening (121) corresponding to the first insertion portions (133), and the first insertion portions (133) are inserted into the first insertion opening (121).

5. The seat swivel according to any one of claims 1-3, characterized in that, The first transition portion (132) has a trough-shaped structure with an opening facing downwards, the outer ring portion (113) includes a flange (1131) bent towards the outer pressure plate (130), the flange (1131) is located in the trough-shaped structure, and at least one of the flange (1131) and the first transition portion (132) is an annular structure.

6. The seat turntable according to any one of claims 1-3, characterized in that The inner pressure plate (140) includes an inner pressure portion (141), a second transition portion (142), and a second connection portion. The lubricating ring plate (160) or the rolling assembly is disposed between the inner pressure portion (141) and the inner annular plate portion (112). The second transition portion connects the inner pressure portion (141) and the second connection portion. The second connection portion is located on the inner circumference of the inner annular plate portion (112), and the second connection portion is used for fixed connection with the lower plate (120).

7. The seat turntable according to claim 6, wherein, The second connection portion includes a plurality of second insertion portions (143) arranged circumferentially along the inner pressure plate (140). The second insertion portions (143) extend along the axial direction of the inner pressure plate (140). The lower plate (120) has second insertion openings (122) corresponding to the second insertion portions (143), and the second insertion portions (143) are inserted into the second insertion openings (122).

8. The seat turntable according to any one of claims 1-3, characterized in that, A lubricating ring (170) is clamped on the inner hole edge of the inner annular plate portion (112).

9. The seat swivel according to any one of claims 1 to 3, characterized in that It further includes a lock pin assembly. The lock pin assembly includes a lock bracket (181), a lock pin (182), and a driving member. The lock pin (182) is fixedly provided on the lock bracket (181). The lock bracket (181) is rotatably connected to the lower plate (120) through a rotating shaft (183). The rotating shaft (183) passes through the upper plate (110) and is fixed to a fixing member (184) of the upper plate (110). The pin shaft of the lock pin (182) passes through the upper plate (110), and a card slot for the lock pin (182) to be inserted into is provided on the lower plate (120). The driving member is used to drive the lock bracket (181) to rotate so as to drive the lock pin (182) to disengage from the card slot.

10. The seat turntable according to claim 9, wherein, The lock pin assembly further includes an elastic reset member (186). One end of the elastic reset member (186) is connected to the fixing member (184), and the other end is connected to the portion of the pin shaft passing through the upper plate (110). The elastic reset member (186) is used to drive the lock bracket (181) to rotate when the driving force of the driving member disappears so that the lock pin (182) is inserted into the card slot.

11. The seat turntable according to claim 9, characterized in that, The driving member is a manual cable or an unlocking motor.

12. The seat swivel according to any one of claims 1-3, characterized in that, It further includes a driving motor (191) and transmission components. The driving motor (191) drives the upper plate (110) to rotate relative to the lower plate (120) through the transmission components.

13. An automotive seat, comprising a seat frame, characterized in that, It further includes the seat turntable according to any one of claims 1-12. The upper plate (110) is fixedly connected to the seat frame, and the lower plate (120) is used for fixed connection with the vehicle body or the slide rail.

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