Automobile seat turntable mechanism and automobile seat

Abstract

The invention provides an automobile seat rotating disc mechanism and an automobile seat, and belongs to the technical field of automobile seats.The rotating disc mechanism comprises a bottom frame, a rotating shaft, a driving assembly, an eccentric wheel, a fixed gear ring, a movable gear, a movable disc and a rotating stand, the rotating shaft is arranged on the bottom frame, the driving assembly is used for driving the rotating shaft to rotate, and the eccentric wheel is arranged on the rotating shaft and synchronously rotates with the rotating shaft; the fixed gear ring is arranged on the bottom frame and comprises an inner tooth part, the movable gear is arranged outside the eccentric wheel in a sleeving mode and partially meshed with the inner tooth part, a linkage protruding block is arranged on the movable gear, the movable disc comprises a linkage hole matched with the eccentric wheel and a linkage opening matched with the linkage protruding block, and the rotating frame rotates along with movement of the movable disc; the mechanism is smaller in occupied space and easier to adapt to various vehicle types, torque transmission during rotation is more efficient, large torque output is achieved under the smaller size, and therefore the power requirement for seat rotation is met, and meanwhile the mechanism is low in noise and good in stability during operation.

Description

Technical Field

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

[0002] Vehicle seats are a crucial part of the interior design of vehicles, mainly responsible for providing a comfortable riding experience for drivers and passengers. Modern vehicle seats not only focus on the aesthetics of the exterior design but also are deeply optimized in terms of ergonomics to ensure comfort during long-distance driving. Many vehicle seats are also equipped with multiple adjustment functions, including front-back movement, tilt angle adjustment, and height adjustment. Some high-end models even provide heating, ventilation, massage, and rotation functions to enhance the luxury and comfort of the ride.

[0003] Traditional rotating seats usually rely on a motor and a gear transmission system to achieve the rotation function of the seat, and then use another motor to drive a telescopic block to lock the seat. Although this design can achieve the rotation of the seat, its structure is relatively complex, resulting in a large occupied space and difficulty in adapting to various vehicle models. At the same time, when the seat rotates, sufficient rotational torque needs to be provided, and conventional motor and gear transmission structures often have difficulty controlling the overall volume of the mechanism while meeting the torque requirements. Therefore, the traditional design has certain limitations in terms of flexibility and space utilization. Summary of the Invention

[0004] The purpose of the present invention is to overcome the disadvantages and deficiencies existing in the prior art, and to provide a vehicle seat turntable mechanism and a vehicle seat.

[0005] The technical solution adopted by the present invention is as follows: In the first aspect, the present application provides a vehicle seat turntable mechanism, including: A chassis on which a rotating shaft is provided; A driving component for driving the rotating shaft to rotate; An eccentric wheel provided on the rotating shaft and rotating synchronously therewith; A fixed gear ring provided on the chassis and including an inner tooth portion; A movable gear sleeved outside the eccentric wheel and partially meshed with the inner tooth portion, on which a linkage convex block is provided; A movable disk including a linkage hole cooperating with the eccentric wheel and a linkage port cooperating with the linkage convex block; And a turntable frame that rotates following the movement of the movable disk.

[0006] In some embodiments, a connecting frame is disposed between the rotating frame and the movable disk. A through hole coaxial with the linkage hole is provided on the connecting frame, and a linkage groove is provided on one side thereof facing the movable disk. The movable disk is embedded in the linkage groove, such that the connecting frame follows the movement of the movable disk, and the rotating frame is connected to the connecting frame.

[0007] In some embodiments, there are two linkage bumps which are symmetrically arranged with respect to the center of the movable gear. There are two linkage ports which are in sliding fit with the corresponding linkage bumps. The linkage ports communicate with the linkage holes, and the eccentric wheel rotates within the linkage holes.

[0008] In some embodiments, the driving assembly includes a driving motor, a worm, and a worm gear. The driving motor drives the worm to rotate, and the worm gear is disposed on the rotating shaft and meshes with the worm.

[0009] In some embodiments, a plurality of upper limit hooks are circumferentially and uniformly arranged on the rotating frame facing the bottom frame, and corresponding lower limit hooks are provided on the bottom frame. The hook portions of the upper limit hooks extend into the hook portions of the lower limit hooks.

[0010] In some embodiments, an inner retaining ring is provided on the bottom frame on the outer circumference of the internal tooth portion, and an outer retaining ring is provided on the bottom frame outside the inner retaining ring. A support frame is provided on one side of the rotating frame facing the bottom frame. A ring groove portion is provided on one side of the support frame close to the outer retaining ring. A lower track groove portion is provided on the bottom frame, and an upper track groove portion is provided on the outer retaining ring. A first rotating connector is provided between the upper track groove portion and the ring groove portion and between the lower track groove portion and the ring groove portion.

[0011] In some embodiments, the first rotating connector includes an annular plate and a number of first balls. A number of first mounting holes are circumferentially and uniformly arranged on the annular plate. The first balls are rotatably disposed in the first mounting holes. Rotating connections are formed between the upper track groove portion and the ring groove portion and between the lower track groove portion and the ring groove portion through a number of first balls.

[0012] In some embodiments, a first arc-shaped plate portion is provided on one side of the support frame close to the inner retaining ring, and a second arc-shaped plate portion is provided on the inner retaining ring. An installation cavity is formed between the first arc-shaped plate portion and the second arc-shaped plate portion. A second rotating connector is provided in the installation cavity. The second rotating connector includes an installation ring and a number of second balls. Rotating connections are formed between the first arc-shaped plate portion and the second arc-shaped plate portion through a number of second balls.

[0013] In some embodiments, the support frame further includes an inverted U-shaped portion between the ring groove portion and the first arc-shaped plate portion, and the inverted U-shaped portion is connected to the rotating frame.

[0014] In a second aspect, the present application provides an automotive seat, including the automotive seat turntable mechanism described above. The chassis is used to connect to the vehicle frame of the automobile, and the rotating frame is used to connect to the seat base.

[0015] The beneficial effects of the present invention are as follows: 1. In the present invention, the eccentric wheel, fixed gear ring, movable gear and movable disk can adopt a stacked layout, effectively reducing the overall volume of the mechanism. Compared with the traditional motor and gear transmission structure, it occupies less space and is more easily adapted to various vehicle models.

[0016] 2. The cooperation between the eccentric wheel and the movable gear in the present invention makes the torque transmission during rotation more efficient. The design of the eccentric wheel can achieve a large torque output with a smaller volume, thus meeting the power requirements for seat rotation. At the same time, the mechanism runs with low noise and good stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, obtaining other drawings based on these drawings still belongs to the scope of the present invention.

[0018] Figure 1 Schematic diagram of an automotive seat turntable mechanism in the present invention Figure 1 ; Figure 2 Schematic diagram of an automotive seat turntable mechanism in the present invention Figure 2 ; Figure 3 Schematic diagram of an automotive seat turntable mechanism in the present invention Figure 3 ; Figure 4 Schematic diagram of the movable disk and the connecting seat in the present invention; Figure 5 Schematic diagram of the upper limit hook and the lower limit hook in the present invention; Figure 6 Cross-sectional view of an automotive seat turntable mechanism in the present invention; Figure 7 For Figure 6 Enlarged view of part A in Figure 8 Schematic diagram of the first rotating connecting member and the second rotating connecting member in the present invention; Figure 9 Schematic diagram of the helical gear and the helical gear shaft in the present invention; Figure 10 Schematic diagram of the automotive seat in the present invention. Detailed implementation manners

[0019] The following description provides specific application scenarios and requirements of this specification, aiming to enable those skilled in the art to manufacture and use the content in this specification. For those skilled in the art, various partial modifications to the disclosed embodiments are obvious, and the general principles defined here can be applied to other embodiments and applications without departing from the spirit and scope of this specification. Therefore, this specification is not limited to the disclosed embodiments, but has the broadest scope consistent with the claims.

[0020] In the description of this application, it should be noted that unless otherwise clearly specified and limited, the orientation or positional relationship indicated by terms such as "longitudinal", "transverse", "radial", "length", "width", "thickness", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe this application and its embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation.

[0021] It should be noted that terms such as "first", "second" and similar words do not represent any order, quantity or importance, but are only used to distinguish different components, and should not be construed as a limitation on the embodiments of this application.

[0022] It should be noted that terms such as "installed", "set up", "provided with", "connected", "linked" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there is internal communication between two devices, elements or components.

[0023] It should be noted that words such as "in some embodiments", "exemplarily", "for example" are used to represent examples, illustrations or explanations. Any embodiment or design solution described in this application as "in some embodiments", "exemplarily", "for example" should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Exactly speaking, using words such as "in some embodiments", "exemplarily", "for example" aims to present relevant concepts in a specific way, meaning that the specific features, structures or characteristics described in combination with the embodiments can be included in at least one embodiment of this application. The appearance of the above words at various positions in the specification does not necessarily refer to the same embodiment, nor are they independent or alternative embodiments mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0024] For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0025] Regarding the drawings of this application, it should be clearly understood that the drawings are only for the purpose of illustration and description, and are not intended to limit the scope of this specification. It should also be understood that the drawings are not necessarily drawn to scale.

[0026] As Figures 1 to 9 shown, this specification provides an automotive seat turntable mechanism, including a chassis 1, a rotating shaft 2, a driving assembly 3, an eccentric wheel 4, a fixed gear ring 5, a movable gear 6, a movable disk 7, and a rotating frame 8. The rotating shaft 2 is arranged on the chassis 1, and the eccentric wheel 4 is arranged on the rotating shaft 2 and rotates synchronously therewith. Exemplarily, the rotating shaft 2 is a hollow rotating shaft, and a knurled portion is provided on the outer surface of its lower end and connected to the eccentric wheel 4.

[0027] The driving assembly 3 is used to drive the rotating shaft 2 to rotate.

[0028] Exemplarily, the driving assembly 3 includes a driving motor 30, a worm 31, and a worm gear 32. The driving motor 30 drives the worm 31 to rotate, and the worm gear 32 is arranged on the rotating shaft 2 and meshes with the worm gear 32. Such a setting can achieve self-locking of the seat at any angle.

[0029] Exemplarily, as Figure 9 shown, the worm 31 and the worm gear 32 can be replaced by a helical gear 33 and a helical gear shaft 34. Generally, the worm 31 and the worm gear 32 are made of metal, and the helical gear 33 and the helical gear shaft 34 can be made of high-strength plastic to reduce their weight.

[0030] The fixed gear ring 5 is arranged on the chassis 1 and includes an inner tooth portion 50. The movable gear 6 is sleeved outside the eccentric wheel 4 and partially meshes with the inner tooth portion 50, and a linkage convex block 60 is provided thereon. The movable disk 7 includes a linkage hole 70 that cooperates with the eccentric wheel 4 and a linkage port 71 that cooperates with the linkage convex block 60. The rotating frame 8 follows the movement of the movable disk 7 to achieve rotation. Such a setting can adopt a stacked layout through the eccentric wheel 4, the fixed gear ring 5, the movable gear 6, and the movable disk 7, effectively reducing the overall volume of the mechanism. Compared with the traditional motor and gear transmission structure, it occupies less space and is more easily adapted to various vehicle models.

[0031] Secondly, the cooperation between the eccentric wheel 4 and the movable gear 6 makes the torque transmission during rotation more efficient. The design of the eccentric wheel can achieve a larger torque output with a smaller volume, thereby meeting the power requirements for seat rotation. At the same time, the mechanism operates with low noise and good stability.

[0032] Preferably, a connecting frame 9 is provided between the turntable 8 and the movable disk 7. A through hole 90 coaxial with the linkage hole 70 is provided on the connecting frame 9, and a linkage groove 91 is provided on the side thereof facing the movable disk 7. The movable disk 7 is embedded in the linkage groove 91, so that the connecting frame 9 moves along with the movable disk 7. The turntable 8 is connected to the connecting frame 9. With such a setting, the integrity of the movable disk 7 parts is ensured, and excessive punching on it is avoided. As a core transmission part, it requires high structural strength, thereby extending the service life of the mechanism.

[0033] In some embodiments, there are two linkage bumps 60 which are symmetrically arranged about the center of the movable gear 6. There are two linkage ports 71 which are slidably engaged with the corresponding linkage bumps 60. The linkage ports 71 communicate with the linkage hole 70. The eccentric wheel 4 rotates in the linkage hole 70, and at the same time, precise control of the movable disk 7 is achieved through the action of the linkage bumps 60, simplifying the control method of the seat rotation, making the rotation process more efficient and reliable. In addition, the symmetrical arrangement can improve the stability of the whole mechanism.

[0034] In some embodiments, a plurality of upper limit hooks 10 are circumferentially and uniformly arranged on the turntable 8 facing the bottom frame 1, and corresponding lower limit hooks 11 are arranged on the bottom frame 1. The hook part of the upper limit hook 10 extends into the hook part of the lower limit hook 11. As Figure 5 shown, there is no contact between the two hook parts, and no resistance is generated to the rotation of the turntable 8. It only serves as a safety structure to prevent the turntable 8 and the bottom frame 1 from separating.

[0035] In some embodiments, as Figures 6 to 8As shown, an inner retaining ring 12 is provided on the underframe 1 outside the outer circumference of the internal tooth part 50. An outer retaining ring 13 is provided on the underframe 1 outside the inner retaining ring 12. On the side of the rotating frame 8 facing the underframe 1, a support frame 14 is provided. On the side of the support frame 14 close to the outer retaining ring 13, a ring groove part 140 is provided. On the underframe 1, a lower track groove part 100 is provided. On the outer retaining ring 13, an upper track groove part 130 is provided. A first rotating connector 15 is provided between the upper track groove part 130 and the ring groove part 140 and between the lower track groove part 100 and the ring groove part 140. Among them, the first rotating connector 15 includes an annular plate 150 and a number of first balls 151. A number of first mounting holes are evenly arranged circumferentially on the annular plate 150. The first balls 151 are rotatably arranged in the first mounting holes. The rotation connection is formed between the upper track groove part 130 and the ring groove part 140 and between the lower track groove part 100 and the ring groove part 140 through a number of first balls 151. On the side of the support frame 14 close to the inner retaining ring 12, a first arc-shaped plate part 141 is provided. On the inner retaining ring 12, a second arc-shaped plate part 120 is provided. An installation cavity 16 is formed between the first arc-shaped plate part 141 and the second arc-shaped plate part 120. A second rotating connector 17 is provided in the installation cavity 16. The second rotating connector 17 includes an installation ring 170 and a number of second balls 171. The rotation connection is formed between the first arc-shaped plate part 141 and the second arc-shaped plate part 120 through a number of second balls 171. With such a setting, a stable and reliable rotation connection is formed between the rotating frame 8 and the underframe 1, ensuring the smoothness when the rotating frame 8 rotates, greatly improving the stability and comfort during the rotation adjustment of the seat, and reducing the noise generated during the rotation adjustment.

[0036] Furthermore, the support frame 14 further includes an inverted U-shaped part 142 between the ring groove part 140 and the first arc-shaped plate part 141. The inverted U-shaped part 142 is connected to the rotating frame 8. With such a setting, when the rotating frame 8 is subjected to an impact, it can play a buffering role and prevent the mechanism from being damaged.

[0037] As Figure 9 shown, this specification provides an automobile seat, including the above-mentioned automobile seat turntable mechanism. The underframe 1 is used to connect to the vehicle frame of the automobile, and the rotating frame 8 is used to connect to the seat base.

[0038] In summary, after reading this detailed disclosure, those skilled in the art can understand that the foregoing detailed disclosure may be presented only by way of example and may not be restrictive. Although not explicitly stated here, those skilled in the art can understand that the requirements of this application encompass various reasonable changes, improvements, and modifications to the embodiments. These changes, improvements, and modifications are intended to be proposed by this application and are within the spirit and scope of the exemplary embodiments of this application.

[0039] In addition, it should be understood that in the foregoing description of the embodiments of the present application, for the purpose of helping to understand a feature and for the purpose of simplifying the present application, the present application combines various features in a single embodiment, drawing, or its description. However, this does not mean that the combination of these features is necessary. When reading the present application, those skilled in the art may very well mark out some of the devices as separate embodiments for understanding. That is to say, the embodiments in the present application can also be understood as the integration of multiple sub - embodiments. And this also holds when the content of each sub - embodiment is less than all the features of a single foregoing disclosed embodiment.

[0040] Finally, it should be understood that the embodiments of the application disclosed herein are illustrative of the principles of the embodiments of the present application. Other modified embodiments are also within the scope of the present application. Therefore, the embodiments disclosed in the present application are merely examples and not limitations. Those skilled in the art can adopt alternative configurations according to the embodiments in the present application to implement the application in the present application. Therefore, the embodiments of the present application are not limited to the embodiments precisely described in the application.

Claims

1. An automotive seat turntable mechanism, characterized in that, Comprising: A chassis, on which a rotating shaft is provided; A driving assembly for driving the rotating shaft to rotate; An eccentric wheel provided on the rotating shaft and rotating synchronously therewith; A fixed gear ring provided on the chassis and including an inner tooth portion; A movable gear sleeved outside the eccentric wheel and partially meshed with the inner tooth portion, on which a linkage convex block is provided; A movable disk including a linkage hole for cooperating with the eccentric wheel and a linkage port for cooperating with the linkage convex block; And a rotating frame that rotates following the movement of the movable disk.

2. The automotive seat turntable mechanism according to claim 1, wherein A connecting frame is provided between the rotating frame and the movable disk. A through hole is coaxially provided on the connecting frame with the linkage hole, and a linkage groove is provided on the side facing the movable disk. The movable disk is embedded in the linkage groove, so that the connecting frame follows the movement of the movable disk, and the rotating frame is connected to the connecting frame.

3. The automotive seat swivel mechanism according to claim 1, characterized in that, There are two linkage convex blocks symmetrically arranged with the center of the movable gear. There are two linkage ports that are slidably matched with the corresponding linkage convex blocks. The linkage ports are communicated with the linkage holes, and the eccentric wheel rotates in the linkage holes.

4. The turntable mechanism of an automotive seat according to claim 1, characterized in that, The driving assembly includes a driving motor, a worm and a worm gear. The driving motor drives the worm to rotate, and the worm gear is provided on the rotating shaft and meshed with the worm.

5. A vehicle seat turntable mechanism according to claim 1, characterized in that, A plurality of upper limit hooks are circumferentially and evenly arranged on the rotating frame facing the chassis. Corresponding lower limit hooks are provided on the chassis, and the hook parts of the upper limit hooks extend into the hook parts of the lower limit hooks.

6. The automotive seat turntable mechanism according to claim 1, wherein, An inner retaining ring is provided on the chassis outside the inner tooth portion, and an outer retaining ring is provided on the chassis outside the inner retaining ring. A support frame is provided on the side of the rotating frame facing the chassis. A ring groove portion is provided on the side of the support frame close to the outer retaining ring. A lower track groove portion is provided on the chassis, and an upper track groove portion is provided on the outer retaining ring. A first rotating connector is provided between the upper track groove portion and the ring groove portion and between the lower track groove portion and the ring groove portion.

7. The automotive seat swivel mechanism according to claim 6, wherein, The first rotating connector includes an annular plate and a plurality of first balls. A plurality of first mounting holes are circumferentially and evenly arranged on the annular plate. The first balls are rotatably arranged in the first mounting holes. Rotating connections are formed between the upper track groove portion and the ring groove portion and between the lower track groove portion and the ring groove portion through a plurality of first balls.

8. The automotive seat turntable mechanism according to claim 6, characterized in that, A first arc-shaped plate portion is provided on the side of the support frame close to the inner retaining ring. A second arc-shaped plate portion is provided on the inner retaining ring. An installation cavity is formed between the first arc-shaped plate portion and the second arc-shaped plate portion. A second rotating connector is provided in the installation cavity. The second rotating connector includes an installation ring and a plurality of second balls. Rotating connections are formed between the first arc-shaped plate portion and the second arc-shaped plate portion through a plurality of second balls.

9. The automotive seat turntable mechanism according to claim 8, wherein The support frame further includes an inverted U-shaped portion between the ring groove portion and the first arc-shaped plate portion, and the inverted U-shaped portion is connected to the rotating frame.

10. An automotive seat, characterized in that, Including the vehicle seat turntable mechanism according to any one of claims 1 to 9, wherein the chassis is used for connecting to the vehicle frame, and the rotating frame is used for connecting to the seat base.

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