Automobile seat turntable mechanism and automobile seat

Abstract

The present invention provides a car seat turntable mechanism and a car seat, belonging to the technical field of car seats. The turntable mechanism includes a base frame, a rotating shaft, a driving assembly, an eccentric wheel, a fixed gear ring, a movable gear, a movable plate and a rotating frame. The rotating shaft is arranged on the base frame, the driving assembly is used to drive the rotating shaft to rotate, the eccentric wheel is arranged on the rotating shaft and rotates synchronously with the eccentric wheel, the fixed gear ring is arranged on the base frame and includes an inner tooth portion, the movable gear is sleeved on the outside of the eccentric wheel and partially meshed with the inner tooth portion, a linkage protrusion is provided on the movable plate, the movable plate includes a linkage hole that cooperates with the eccentric wheel and a linkage port that cooperates with the linkage protrusion, and the rotating frame rotates following the movement of the movable plate; the mechanism of the present invention occupies less space and is easier to adapt to various vehicle models, and the torque transmission during rotation is more efficient, so that a larger torque output can be achieved in a smaller volume, thereby meeting the power requirements for seat rotation, and at the same time, the mechanism has low noise and good stability during operation.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile seats, and in particular to an automobile seat turntable mechanism and an automobile seat. Background Art

[0002] Car seats are a crucial component of vehicle interior design, primarily responsible for providing a comfortable ride for both driver and passenger. Modern car seats not only emphasize aesthetic design but also undergo in-depth ergonomic optimization to ensure comfort during long drives. Many car seats also feature multiple adjustment functions, including fore-and-aft movement, recline, and height adjustment. Some high-end models even offer heating, ventilation, massage, and rotation features to enhance the luxurious feel and comfort of the ride.

[0003] Traditional swivel seats typically rely on a motor and gear transmission system to achieve the seat's rotation function, and another motor drives a telescopic block to lock the seat. While this design can achieve seat rotation, its relatively complex structure occupies a large space and is difficult to adapt to various vehicle models. Furthermore, sufficient rotational torque is required for seat rotation, and conventional motor and gear transmission structures often struggle to meet this torque requirement while also controlling the overall size of the mechanism. Therefore, traditional designs have certain limitations in terms of flexibility and space utilization. Summary of the Invention

[0004] The purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art and to provide a car seat turntable mechanism and a car seat.

[0005] The technical solutions adopted by the present invention are as follows: In the first aspect, the present application provides a car seat turntable mechanism, comprising:

[0006] a base frame on which a rotating shaft is provided;

[0007] A driving assembly, which is used to drive the rotating shaft to rotate;

[0008] an eccentric wheel, which is disposed on the rotating shaft and rotates synchronously therewith;

[0009] A fixed gear ring, which is arranged on the base frame and includes an inner gear portion;

[0010] The movable gear is sleeved on the outside of the eccentric wheel and partially meshed with the inner tooth portion, and is provided with a linkage protrusion;

[0011] The movable plate includes a linkage hole cooperating with the eccentric wheel and a linkage port cooperating with the linkage protrusion;

[0012] and a rotating rack which rotates following the movement of the movable disk.

[0013] In some embodiments, a connecting frame is provided between the rotating frame and the movable disk, a through hole is provided on the connecting frame coaxially with the linkage hole, 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 moves with the movable disk, and the rotating frame and the connecting frame are connected.

[0014] In some embodiments, there are two linkage protrusions and they are symmetrically arranged around the center of the movable gear. There are two linkage openings and they are slidingly engaged with the corresponding linkage protrusions. The linkage openings are connected to the linkage holes, and the eccentric wheel rotates in the linkage hole.

[0015] In some embodiments, the driving assembly includes a driving motor, a worm and a worm wheel, wherein the driving motor drives the worm to rotate, and the worm wheel is disposed on the rotating shaft and meshes with the worm wheel.

[0016] In some embodiments, a plurality of upper limit hooks are evenly arranged on the rotating frame toward the circumference of the base frame, and a lower limit hook is correspondingly arranged on the base frame, and the hook portion of the upper limit hook extends into the hook portion of the lower limit hook.

[0017] In some embodiments, an inner retaining ring is provided on the outer ring of the inner tooth portion of the base frame, an outer retaining ring is provided on the outer ring of the inner retaining ring on the base frame, a support frame is provided on the side of the rotating frame facing the base frame, and an annular groove portion is provided on the side of the support frame close to the outer retaining ring, a lower rail groove portion is provided on the base frame, an upper rail groove portion is provided on the outer retaining ring, and a first rotating connecting member is provided between the upper rail groove portion and the annular groove portion and between the lower rail groove portion and the annular groove portion.

[0018] In some embodiments, the first rotating connection member includes an annular plate and a plurality of first balls, the annular plate is evenly provided with a plurality of first mounting holes in a circumferential direction, the first balls are rotatably arranged in the first mounting holes, and a rotating connection is formed between the upper track groove portion and the annular groove portion, as well as between the lower track groove portion and the annular groove portion through the plurality of first balls.

[0019] In some embodiments, a first arc-shaped plate portion is provided on the 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 connection member is provided in the installation cavity. The second rotating connection member includes a mounting ring and a plurality of second balls. The first arc-shaped plate portion and the second arc-shaped plate portion are rotationally connected through the plurality of second balls.

[0020] In some embodiments, the support frame further includes an inverted U-shaped portion between the annular groove portion and the first arc-shaped plate portion, and the inverted U-shaped portion is connected to the rotating frame.

[0021] In a second aspect, the present application provides a car seat, comprising the car seat turntable mechanism, wherein the base frame is used to connect to the frame of the car, and the turntable is used to connect to the base of the seat.

[0022] The beneficial effects of the present invention are as follows:

[0023] 1. The eccentric wheel, fixed ring gear, movable gear and movable plate in the present invention 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.

[0024] 2. The coordination of 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 larger torque output in a smaller volume, thereby meeting the power requirements of the seat rotation. At the same time, the mechanism has low noise and good stability during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying any creative work, other drawings obtained based on these drawings still fall within the scope of the present invention.

[0026] Figure 1 A schematic diagram of a car seat turntable mechanism in the present invention Figure 1 ;

[0027] Figure 2 A schematic diagram of a car seat turntable mechanism in the present invention Figure 2 ;

[0028] Figure 3 A schematic diagram of a car seat turntable mechanism in the present invention Figure 3 ;

[0029] Figure 4 A schematic diagram of the movable disk and the connecting seat in the present invention;

[0030] Figure 5 Schematic diagram of the upper limit hook and the lower limit hook in the present invention;

[0031] Figure 6 A cross-sectional view of a car seat turntable mechanism according to the present invention;

[0032] Figure 7 for Figure 6 Enlarged view of point A in the middle;

[0033] Figure 8Schematic diagram of the first rotating connector and the second rotating connector in the present invention;

[0034] Figure 9 Schematic diagram of the helical gear and the helical gear shaft in the present invention;

[0035] Figure 10 Schematic diagram of the car seat of the present invention. DETAILED DESCRIPTION

[0036] The following description provides specific application scenarios and requirements for this specification, with the goal of enabling those skilled in the art to make and use the contents of this specification. Various modifications to the disclosed embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may 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 embodiments shown, but is intended to be accorded the broadest scope consistent with the claims.

[0037] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "longitudinal", "transverse", "radial", "length", "width", "thickness", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe this application and its embodiments, and are not intended to limit the indicated devices, elements or components to a specific orientation, or to be constructed and operated in a specific orientation.

[0038] It should be noted that the terms "first", "second" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different components and should not be understood as limitations on the embodiments of the present application.

[0039] It should be noted that the terms "installed," "set," "provided with," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; or internal communication between two devices, elements, or components.

[0040] It should be noted that the terms "in some embodiments", "exemplarily", "for example", etc. are used to indicate examples, illustrations or descriptions. Any embodiment or design described in this application as "in some embodiments", "exemplarily", "for example" should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "in some embodiments", "exemplarily", "for example" is intended to present related concepts in a concrete way, meaning that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the above words in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0041] For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] Regarding the drawings of this application, it should be clearly understood that the drawings are for illustration and description purposes only 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.

[0043] like Figures 1 to 9 As shown, this specification provides a car seat turntable mechanism, including a base frame 1, a rotating shaft 2, a driving assembly 3, an eccentric wheel 4, a fixed ring gear 5, a movable gear 6, a movable disk 7 and a turntable 8. The rotating shaft 2 is arranged on the base frame 1, and the eccentric wheel 4 is arranged on the rotating shaft 2 and rotates synchronously with the rotating shaft. Exemplarily, the rotating shaft 2 is a hollow rotating shaft, and a knurled portion is provided on the outer surface of its lower end to be connected to the eccentric wheel 4.

[0044] The driving assembly 3 is used to drive the rotating shaft 2 to rotate.

[0045] Exemplarily, the drive assembly 3 includes a drive motor 30, a worm 31 and a worm wheel 32. The drive motor 30 drives the worm 31 to rotate. The worm wheel 32 is arranged on the rotating shaft 2 and meshes with the worm wheel 32. Such an arrangement can realize self-locking of the seat at any angle.

[0046] For example, Figure 9 As shown, the worm 31 and the worm wheel 32 can be replaced by a helical gear 33 and a helical gear shaft 34. The worm 31 and the worm wheel 32 are generally made of metal, while the helical gear 33 and the helical gear shaft 34 can be made of high-strength plastic to reduce their weight.

[0047] The fixed gear ring 5 is arranged on the base frame 1 and includes an inner tooth portion 50. The movable gear 6 is sleeved on the outside of the eccentric wheel 4 and partially engaged with the inner tooth portion 50. A linkage protrusion 60 is provided on it. 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 protrusion 60. The rotating frame 8 rotates following the movement of the movable disk 7. With such an arrangement, a stacked layout can be adopted through the eccentric wheel 4, the fixed gear ring 5, the movable gear 6 and the movable disk 7, which effectively reduces the overall volume of the mechanism. Compared with the traditional motor and gear transmission structure, it occupies less space and is easier to adapt to a variety of vehicle models.

[0048] 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 in a smaller volume, thereby meeting the power requirements of the seat rotation. At the same time, the mechanism has low noise and good stability during operation.

[0049] Preferably, a connecting frame 9 is provided between the rotating frame 8 and the movable disk 7, and a through hole 90 is provided on the connecting frame 9 coaxially with the linkage hole 70, and a linkage groove 91 is provided on the side facing the movable disk 7. The movable disk 7 is embedded in the linkage groove 91, so that the connecting frame 9 moves with the movable disk 7. The rotating frame 8 and the connecting frame 9 are connected. Such an arrangement ensures the integrity of the parts of the movable disk 7 and avoids excessive drilling on it. As a core transmission part, it requires higher structural strength, thereby extending the service life of the mechanism.

[0050] In some embodiments, there are two linkage protrusions 60 and they are symmetrically arranged with the center of the movable gear 6. There are two linkage openings 71 and they slide with the corresponding linkage protrusions 60. The linkage openings 71 are connected to the linkage holes 70. The eccentric wheel 4 rotates in the linkage hole 70. At the same time, the movable disk 7 is precisely controlled by the action of the linkage protrusions 60, which simplifies the control method of the seat rotation and makes the rotation process more efficient and reliable. In addition, the symmetrical arrangement can improve the stability of the entire mechanism.

[0051] In some embodiments, a plurality of upper limit hooks 10 are evenly arranged on the rotating frame 8 toward the base frame 1 in a circumferential direction, and a lower limit hook 11 is correspondingly arranged on the base frame 1. The hook portion of the upper limit hook 10 extends into the hook portion of the lower limit hook 11. Figure 5 As shown, the two hooks do not contact each other and do not generate resistance to the rotation of the rotating frame 8. They only serve as a safety structure to prevent the rotating frame 8 and the base frame 1 from separating.

[0052] In some embodiments, as Figures 6 to 8As shown, an inner retaining ring 12 is provided on the outer ring of the inner tooth portion 50 on the base frame 1, and an outer retaining ring 13 is provided on the outer ring of the inner retaining ring 12 on the base frame 1, a support frame 14 is provided on the side of the rotating frame 8 facing the base frame 1, and an annular groove portion 140 is provided on the side of the support frame 14 close to the outer retaining ring 13, a lower track groove portion 100 is provided on the base frame 1, and an upper track groove portion 130 is provided on the outer retaining ring 13, and a first rotating connection member 15 is provided between the upper track groove portion 130 and the annular groove portion 140 and between the lower track groove portion 100 and the annular groove portion 140, wherein the first rotating connection member 15 includes an annular plate 150 and a plurality of first balls 151, and the annular plate 150 is evenly provided with a plurality of first mounting holes in the circumferential direction, and the first balls 151 are rotatably arranged in the first mounting holes, The lower track groove portion 100 and the annular groove portion 140 are both rotationally connected by a plurality of first balls 151. The support frame 14 is provided with a first arc plate portion 141 on the side close to the inner retaining ring 12, and a second arc plate portion 120 is provided on the inner retaining ring 12. A mounting cavity 16 is formed between the first arc plate portion 141 and the second arc plate portion 120. A second rotating connection member 17 is provided in the mounting cavity 16. The second rotating connection member 17 includes a mounting ring 170 and a plurality of second balls 171. The first arc plate portion 141 and the second arc plate portion 120 are rotationally connected by the plurality of second balls 171. With this arrangement, a stable and reliable rotating connection is formed between the rotating frame 8 and the base frame 1, ensuring the smoothness of the rotation of the rotating frame 8, greatly improving the stability and comfort of the seat rotation adjustment, and reducing the noise generated during the rotation adjustment.

[0053] Furthermore, the support frame 14 also includes an inverted U-shaped portion 142 between the annular groove portion 140 and the first arc-shaped plate portion 141. The inverted U-shaped portion 142 is connected to the rotating frame 8. When the rotating frame 8 is subjected to impact, it can play a buffering role and prevent the mechanism from being damaged.

[0054] like Figure 9 As shown, this specification provides a car seat, including the car seat turntable mechanism, the base frame 1 is used to connect with the frame of the car, and the turntable 8 is used to connect with the base of the seat.

[0055] In summary, after reading this detailed disclosure, those skilled in the art will appreciate that the foregoing detailed disclosure may be presented by way of example only and may not be limiting. Although not expressly stated herein, those skilled in the art will understand that the present application requires various reasonable changes, improvements, and modifications to the embodiments. Such changes, improvements, and modifications are intended to be proposed by the present application and are within the spirit and scope of the exemplary embodiments of the present application.

[0056] Furthermore, it should be understood that in the foregoing descriptions of the embodiments of this application, in order to facilitate understanding of a feature and to simplify this application, this application combines various features into a single embodiment, figure, or description thereof. However, this does not mean that the combination of these features is required. When reading this application, it is entirely possible for a person skilled in the art to label some of the devices as separate embodiments. In other words, the embodiments of this application can also be understood as the integration of multiple sub-embodiments. This also applies when the content of each sub-embodiment is less than all the features of a single aforementioned disclosed embodiment.

[0057] Finally, it should be understood that the embodiments of the application disclosed herein are illustrations 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 based on the embodiments in the present application to implement the applications in the present application. Therefore, the embodiments of the present application are not limited to the embodiments precisely described in the application.

Claims

1. A car seat turntable mechanism, characterized in that: include: a base frame on which a rotating shaft is provided; A driving assembly, which is used to drive the shaft to rotate; an eccentric wheel, which is disposed on the rotating shaft and rotates synchronously therewith; A fixed gear ring, which is arranged on the base frame and includes an inner gear portion; The movable gear is sleeved on the outside of the eccentric wheel and partially meshed with the inner tooth portion, and is provided with a linkage protrusion; The movable plate includes a linkage hole cooperating with the eccentric wheel and a linkage port cooperating with the linkage protrusion; and a rotating rack which rotates following the movement of the movable disk; A connecting frame is provided between the rotating frame and the movable disk, wherein a through hole is provided on the connecting frame coaxially with the linkage hole, and a linkage groove is provided on the side of the connecting frame facing the movable disk, wherein the movable disk is embedded in the linkage groove so that the connecting frame moves with the movable disk, and the rotating frame and the connecting frame are connected; An inner retaining ring is provided on the base frame at the outer ring of the inner tooth portion, an outer retaining ring is provided on the base frame at the outer ring of the inner retaining ring, a support frame is provided on the side of the rotating frame facing the base frame, 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 base frame, an upper track groove portion is provided on the outer retaining ring, and a first rotating connection member is provided between the upper track groove portion and the ring groove portion, as well as between the lower track groove portion and the ring groove portion; The first rotating connection member includes an annular plate and a plurality of first balls. The annular plate is evenly provided with a plurality of first mounting holes in a circumferential direction. The first balls are rotatably arranged in the first mounting holes. The upper track groove portion and the annular groove portion, as well as the lower track groove portion and the annular groove portion, are both rotatably connected via the plurality of first balls. A first arc-shaped plate portion is provided on the 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. A mounting cavity is formed between the first arc-shaped plate portion and the second arc-shaped plate portion. A second rotating connection member is provided in the mounting cavity. The second rotating connection member includes a mounting ring and a plurality of second balls. The first arc-shaped plate portion and the second arc-shaped plate portion are rotationally connected through the plurality of second balls.

2. The car seat turntable mechanism according to claim 1, characterized in that: There are two linkage protrusions and they are symmetrically arranged with respect to the center of the movable gear. There are two linkage openings and they are slidingly matched with the corresponding linkage protrusions. The linkage openings are connected with the linkage holes, and the eccentric wheel rotates in the linkage holes.

3. The car seat turntable mechanism according to claim 1, characterized in that: The driving assembly includes a driving motor, a worm and a worm wheel. The driving motor drives the worm to rotate. The worm wheel is arranged on the rotating shaft and meshes with the worm wheel.

4. The car seat turntable mechanism according to claim 1, characterized in that: A plurality of upper limit hooks are evenly arranged on the rotating frame toward the circumference of the base frame, and a lower limit hook is correspondingly arranged on the base frame, and the hook portion of the upper limit hook extends into the hook portion of the lower limit hook.

5. The car seat turntable mechanism according to claim 1, characterized in that: The support frame further includes an inverted U-shaped portion between the annular groove portion and the first arc-shaped plate portion, and the inverted U-shaped portion is connected to the rotating frame.

6. Car seat, characterized in that, It comprises the automobile seat turntable mechanism according to any one of claims 1 to 5, wherein the base frame is used to be connected to the frame of the automobile, and the turntable is used to be connected to the base of the seat.

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