Double-layer structure flipping drive device

Abstract

This invention discloses a double-layer structure flipping drive device, comprising a first layer structure and a second layer structure arranged in an overlapping manner. A fixed gear is fixedly mounted at one end of the first layer structure, and a revolving gear is rotatably mounted at one end of the second layer structure. The revolving gear can maintain meshing and transmission with the fixed gear. A drive assembly is provided on the first layer structure to drive the revolving gear to rotate around the circumference of the fixed gear, thereby causing the second layer structure to flip back and forth relative to the first layer structure. The beneficial effect of this invention is that the drive assembly drives the revolving gear to rotate around the circumference of the fixed gear, which can drive the second layer structure to flip backward to a horizontal state relative to the first layer structure.

Description

Technical Field

[0001] This invention relates to the field of automotive seat technology, and more specifically to a double-layer structure flip-up drive device. Background Technology

[0002] With rapid economic development, cars are no longer just a means of transportation; they also provide users with a space to rest and recline. In the traditional car seat industry, this is usually achieved by reclining the seat back. However, the length of a single seat cushion and backrest is often too short, failing to provide full support and resulting in a lack of comfort. Alternatively, multiple seats can be joined together to form a bed to increase the support area, but this method is difficult to implement.

[0003] To address these needs, relevant companies are actively developing technologies that can directly transform an entire chair into a bed. The current main concept involves designing the backrest or seat cushion as a double-layer structure. By flipping and unfolding the double-layered backrest or seat cushion, the surface area is expanded, thus ensuring the feasibility of transforming the chair into a bed. However, this research and development currently lacks a driving device to achieve the flipping and unfolding of the double-layered backrest or seat cushion. Summary of the Invention

[0004] In view of this, the present invention provides a double-layer structure flipping drive device that can drive the double-layer structure to flip and flatten.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows:

[0006] A double-layer structure flipping drive device is characterized by comprising an overlapping first layer structure and a second layer structure. A fixed gear is fixedly installed at the end of the first layer structure, and a planetary gear is rotatably installed at the end of the second layer structure. The planetary gear can maintain meshing and transmission with the fixed gear. A drive assembly is provided on the first layer structure to drive the planetary gear to rotate around the circumference of the fixed gear, so that the second layer structure flips back and forth relative to the first layer structure.

[0007] With the above structure, the drive component drives the planetary gear to rotate around the fixed gear in the circumference, which can cause the second layer structure to flip backward relative to the first layer structure to a horizontal state.

[0008] Preferably, the drive assembly includes a rotating arm rotatably disposed on the side of the first layer structure and a second driver that drives the rotating arm to rotate. The rotation center of the rotating arm coincides with the center line of the fixed gear, and the rotating arm is rotatably engaged with the revolving gear.

[0009] Preferably, the rotating arm is arranged outside the fixed gear, and the second driver has an output shaft that passes through the fixed gear from the inside to the outside and is fixedly connected to the outer rotating arm.

[0010] Preferably, a retainer is provided between the fixed gear and the revolving gear, the retainer being used to keep the revolving gear and the fixed gear in a continuous meshing state; the drive assembly includes a transmission gear rotatably mounted at the rear end of the first layer structure and a first driver for driving the transmission gear to rotate, the transmission gear being coaxially arranged with the fixed gear, and the transmission gear meshing with the revolving gear.

[0011] Preferably, the transmission ratio between the fixed gear, the revolving gear, and the transmission gear is 1:1:1.

[0012] Preferably, the revolution gear is a double gear with two annular teeth, and the fixed gear and the transmission gear mesh with the two annular teeth respectively.

[0013] Preferably, the fixed gear and the corresponding revolution gear, transmission gear and cage are provided in two sets, and the two sets of fixed gears are respectively fixed on both sides of the rear end of the first layer structure.

[0014] Preferably, a synchronizing rod is connected between the two sets of transmission gears, and the first driver drives the synchronizing rod to rotate, thereby driving the two sets of transmission gears to rotate synchronously.

[0015] Preferably, the two ends of the retainer are rotatably connected to the axis of the fixed gear and the revolving gear by two pins respectively.

[0016] Preferably, the first layer structure and the second layer structure constitute two overlapping layers of a seat cushion.

[0017] Alternatively, the first layer and the second layer can form two overlapping backrests.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. The double-layer structure flipping drive device provided by this invention drives the planetary gear to rotate around the fixed gear in the circumferential direction, which can drive the second layer structure to flip backward relative to the first layer structure to a horizontal state. Using gear transmission, after stopping, the self-locking action between the gears can stably maintain the second layer structure in a horizontal state, ensuring the reliability and stability of the movement between the first and second layers.

[0020] 2. The double-layer structure flipping drive device provided by the present invention is applied to the double-layer structure of the seat cushion of an automobile seat. In the sitting position, the upper and lower seat cushions are arranged overlappingly, and the revolution gear is located above the fixed gear. The drive component drives the revolution gear to revolve around the fixed gear in a circumferential direction. Under the holding action of the retainer, it can drive the rear end of the upper seat cushion to rotate backward around the rear end of the lower seat cushion, thereby driving the upper seat cushion to flip backward relative to the lower seat cushion to a horizontal state, thereby achieving the purpose of expanding the support area and ensuring the feasibility of the seat transforming into a bed.

[0021] 3. The double-layer structure flipping drive device provided by this invention has the advantages of high transmission efficiency and high motion precision, which improves the stability of the rotation of the second layer structure. Secondly, the vibration generated between the gears is small during transmission, which can reduce transmission noise and improve the user experience. In addition, each gear is small in size and light in weight, and has strong load-bearing capacity, making it especially suitable for use in cars with limited space. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the double-layer structure flipping drive device when it overlaps.

[0023] Figure 2 The right view of the double-layer structure flipping drive device when it overlaps (the retainer 3 is hidden);

[0024] Figure 3 This is a schematic diagram of the double-layered tilting drive device when it is deployed.

[0025] Figure 4 This is a rear view of the double-layered flipping drive device when it overlaps.

[0026] Figure 5 This is a schematic diagram of the double-layer flipping drive device when applied to a seat cushion (sitting posture).

[0027] Figure 6 This is another structural diagram (unfolded state) of a double-layer flipping drive device applied to a seat cushion;

[0028] Figure 7 This is a schematic diagram of the double-layer flip-up drive device when used in a backrest (sitting position).

[0029] Figure 8 This is another structural diagram (in unfolded state) showing the application of a double-layer flip-up drive device to the backrest.

[0030] Figure 9 This is a schematic diagram of another embodiment of the double-layer flipping drive device applied to a seat cushion. Detailed Implementation

[0031] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0032] This embodiment uses the application of a double-layer structure flipping drive device on a double-layer structure seat cushion as an example for detailed explanation.

[0033] like Figure 2 and 5 As shown, a double-layer flip-up drive device includes an overlapping first layer structure 1 and a second layer structure 2, which form two overlapping seat cushions. Specifically, the first layer structure 1 and the second layer structure 2 correspond to the lower and upper seat cushions, respectively. The first layer structure 1 is mounted inside the vehicle via a mounting base 6. A fixed gear 41 is fixedly mounted at the rear end of the first layer structure 1, and a rotating gear 42 is rotatably mounted at the rear end of the second layer structure 2. The rotating gear 42 can mesh with the fixed gear 41 for transmission. Figure 6 As shown, the first layer structure 1 is provided with a drive component 4 on the upper part. The drive component 4 can drive the revolution gear 42 to rotate around the fixed gear 41 in the circumferential direction, so that the upper seat cushion can be flipped backward relative to the lower seat cushion to a horizontal state.

[0034] Based on the above structural design, in the seated position, the upper and lower seat cushions are arranged overlappingly. The planetary gear 42 is located above the fixed gear 41. The drive assembly 4 drives the planetary gear 42 to rotate around the fixed gear 41, which can drive the rear end of the upper seat cushion to rotate backward around the rear end of the lower seat cushion. This causes the upper seat cushion to flip backward relative to the lower seat cushion to a horizontal state, thereby expanding the support area and ensuring the feasibility of the seat transforming into a bed. In addition, the use of gear transmission allows the upper seat cushion to remain stably horizontal after the machine stops, thanks to the self-locking action of the meshing gears.

[0035] Furthermore, for example Figure 1 and 4As shown, a retainer 3 is provided between the fixed gear 41 and the revolving gear 42. The two ends of the retainer 3 are rotatably sleeved at the axial positions of the fixed gear 41 and the revolving gear 42, so that the revolving gear 42 and the fixed gear 41 can maintain a continuous meshing state. The drive assembly 4 includes a transmission gear 43 rotatably mounted at the rear end of the first layer structure 1 and a first driver 44 that drives the transmission gear 43 to rotate. The transmission gear 43 is coaxially arranged with the fixed gear 41 and meshes with the revolving gear 42. The first driver 44 drives the transmission gear 43 to rotate. Since the fixed gear 41 is fixedly mounted at the rear end of the lower cushion and the revolving gear 42 is rotatably mounted at the rear end of the upper cushion, and the revolving gear 42 meshes with both the fixed gear 41 and the transmission gear 43, the rotation of the transmission gear 43 can drive the revolving gear 42 to rotate on its own axis and also revolve around the axis of the fixed gear 41, that is, it can drive the upper cushion to flatten backward relative to the lower cushion. This transmission structure offers advantages such as high transmission efficiency and high motion precision, improving the stability of the upper seat cushion's rotation. Secondly, the vibration generated between gears during transmission is minimal, reducing transmission noise and enhancing the user experience. In addition, the small size and light weight of each gear provide strong load-bearing capacity, making it particularly suitable for applications in cars with limited space.

[0036] In this embodiment, the transmission ratio between the fixed gear 41, the revolving gear 42, and the transmission gear 43 is 1:1:1. This design ensures that the structure of the fixed gear 41, the revolving gear 42, and the transmission gear 43 is minimized. In practical applications, after the upper and lower seat cushions are covered with the cover, the size of the gears can be perfectly integrated with the thickness of the upper and lower seat cushions, improving the overall aesthetics of the seat.

[0037] In addition, the revolution gear 42 can also be a double gear, which has two ring teeth. The fixed gear 41 and the transmission gear 43 mesh with the two ring teeth respectively. When the transmission gear 43 rotates, it can also drive the revolution gear 42 to rotate and revolve around the fixed gear 41 in a circumferential direction.

[0038] Depend on Figure 4 As can be seen, in this embodiment, there are two sets of fixed gears 41, revolving gears 42, transmission gears 43, and retainers 3, which correspond one-to-one. The two sets of fixed gears 41 are fixedly mounted on both sides of the rear end of the first layer structure 1, the two sets of revolving gears 42 are rotatably mounted on both sides of the rear end of the upper cushion 2, and the two sets of transmission gears 43 are rotatably mounted on both sides of the rear end of the first layer structure 1. In the transmission mechanism on the same side, the transmission gears 43 and fixed gears 41 are coaxially arranged, and the transmission gears 43 are located inside the fixed gears 41. The retainers 3 are located at the outer end, and both ends of the retainers 3 are rotatably connected to the axial positions of the fixed gears 41 and revolving gears 42 respectively through pins b.

[0039] Please refer to Figure 1 and 3 A synchronizing rod 45 is connected between the two transmission gears 43. The first driver 44 drives the synchronizing rod 45 to rotate, which can drive the two transmission gears 43 to rotate synchronously, thereby driving the two sets of revolving gears 42 to rotate on their own axis while revolving around the corresponding fixed gear 41, and thus driving the upper seat cushion 2 to flip backward to a horizontal state.

[0040] Revisit Figure 1 In this embodiment, the first driver 44 includes a motor 441 and an output component 442 connected to the output shaft of the motor 441. The output component 442 is fixedly mounted on the synchronizing rod 45, and the base of the motor 441 is fixedly connected to the first layer structure 1 through the adapter a.

[0041] For a more detailed implementation of the method by which the drive assembly 4 drives the planetary gear 42 to rotate circumferentially around the fixed gear 41, please refer to [the specific implementation details]. Figure 9 As shown, the drive assembly 4 includes a rotating arm 46 rotatably disposed on the side of the first layer structure 1 and a second driver 47 that drives the rotating arm 46 to rotate. The rotation center of the rotating arm 46 coincides with the center line of the fixed gear 41, and the rotating arm 46 is rotatably engaged with the planetary gear 42. The second driver 47 drives the rotating arm 46 to rotate backward about its rotation center with the first layer structure 1, which can drive the planetary gear 42 to rotate around the circumference of the fixed gear 41, thereby causing the upper seat cushion to flip backward relative to the lower seat cushion to a horizontal state.

[0042] For details, please refer to the following: Figure 9 The rotating arm 46 is arranged outside the fixed gear 41. The second driver 47 has an output shaft 471, which passes through the fixed gear 41 from the inside to the outside and is fixedly connected to the outer rotating arm 46. The second driver 47 drives the output shaft 471 to rotate, which in turn drives the rotating arm 46 to rotate. In this embodiment, there are two sets of fixed gears 41, revolving gears 42, and rotating arms 46, which correspond one-to-one. The two sets of fixed gears 41 are located on both sides of the rear end of the first layer structure 1, and the two sets of revolving gears 42 are located on both sides of the rear end of the second layer structure 2. The two ends of the output shaft 471 pass through the fixed gears 41 on both sides and are fixedly connected to the two sets of rotating arms 46 respectively. The second driver 47 drives the output shaft 471 to rotate, which in turn drives the rotating arms 46 on both sides of the first layer structure 1 to rotate synchronously.

[0043] In addition to the above-described implementation methods, such as Figure 7 and 8As shown, the drive device can be applied to the backrest of a double-layer structure car seat. The first layer structure 1 and the second layer structure 2 are respectively connected to the front backrest and the rear backrest. The fixed gear 41 is fixedly installed at the lower end of the front backrest, and the revolving gear 42 is installed at the lower end of the rear backrest. After the backrest is tilted forward and flattened, the drive assembly 4 can drive the rear backrest to flip backward relative to the front backrest to a horizontal state, so as to expand the support area.

[0044] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention. Those skilled in the art, under the guidance of the present invention, can make various similar representations without departing from the spirit and claims of the present invention, and such modifications all fall within the protection scope of the present invention.

Claims

1. A double-layer structure flipping drive device, characterized in that, The structure includes an overlapping first layer structure (1) and a second layer structure (2). A fixed gear (41) is fixedly installed at the end of the first layer structure (1), and a rotating gear (42) is rotatably installed at the end of the second layer structure (2). The rotating gear (42) can mesh with the fixed gear (41) for transmission. A drive assembly (4) is provided on the first layer structure (1). The drive assembly (4) is used to drive the rotating gear (42) to rotate around the fixed gear (41) in the circumference, so that the second layer structure (2) flips back and forth relative to the first layer structure (1). A retainer (3) is provided between the fixed gear (41) and the revolving gear (42). The retainer (3) is used to keep the revolving gear (42) and the fixed gear (41) in a continuous meshing state. The drive assembly (4) includes a transmission gear (43) rotatably mounted at the rear end of the first layer structure (1) and a first driver (44) that drives the transmission gear (43) to rotate. The transmission gear (43) is coaxially arranged with the fixed gear (41), and the transmission gear (43) meshes with the revolving gear (42). The first layer structure (1) and the second layer structure (2) constitute two overlapping layers of seat cushion; or, the first layer structure (1) and the second layer structure (2) constitute two overlapping layers of backrest.

2. The double-layer structure flipping drive device according to claim 1, characterized in that: The transmission ratio between the fixed gear (41), the revolving gear (42), and the transmission gear (43) is 1:1:

1.

3. The double-layer structure flipping drive device according to claim 1, characterized in that: The revolution gear (42) is a double gear with two annular teeth, and the fixed gear (41) and the transmission gear (43) mesh with the two annular teeth respectively.

4. The double-layer structure flipping drive device according to claim 1, characterized in that: The number of fixed gears (41) and their corresponding revolution gears (42), transmission gears (43) and cages (3) are provided in two sets, with the two sets of fixed gears (41) respectively fixed on both sides of the rear end of the first layer structure (1).

5. The double-layer structure flipping drive device according to claim 4, characterized in that: A synchronizing rod (45) is connected between the two sets of transmission gears (43). The first driver (44) drives the synchronizing rod (45) to rotate, which can drive the two sets of transmission gears (43) to rotate synchronously.

6. The double-layer structure flipping drive device according to claim 1, characterized in that: The two ends of the retainer (3) are rotatably connected to the axial positions of the fixed gear (41) and the revolving gear (42) by two pins (b).

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