Turnover driving device with double-layer structure

Abstract

The invention discloses a double-layer structure turnover driving device which comprises a first-layer structure and a second-layer structure which are arranged in an overlapped mode, a fixed gear is fixedly installed at the end of the first-layer structure, a revolution gear is rotatably installed at the end of the second-layer structure, and the revolution gear can keep meshing transmission with the fixed gear. A driving assembly is arranged on the first layer structure and used for driving the revolution gear to rotate in the circumferential direction of the fixed gear so that the second layer structure can turn over front and back relative to the first layer structure. The device has the beneficial effects that the driving assembly drives the revolution gear to rotate in the circumferential direction of the fixed gear, and the second-layer structure can be driven to overturn backwards to the horizontal state relative to the first-layer structure.

Description

Technical Field

[0001] The invention relates to the technical field of automobile seats, and in particular to a double-layer structure turning driving device. Background Art

[0002] With the rapid development of the economy, cars are not only a means of transportation, but also a space for users to rest so that they can lie down and rest. In the field of traditional car seats, users usually lie down by folding the seat back. However, the length of a single seat cushion and backrest is too short, and the user's body cannot be fully supported, which lacks comfort. Alternatively, multiple seats are spliced ​​together to form a bed to increase the support area, but this method has the disadvantage of being difficult to operate.

[0003] In response to the above needs, relevant companies are actively developing technologies that can directly transform the entire chair into a bed. The current main idea is to set the backrest or seat cushion into a double-layer structure, and expand the area by flipping and unfolding the double-layer backrest or double-layer seat cushion, thereby ensuring the feasibility of the seat being transformed into a bed. In this research and development context, there is still a lack of a driving device that can realize the flipping and unfolding of the double-layer backrest or double-layer seat cushion. Summary of the invention

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

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

[0006] A double-layer structure flipping drive device, the key of which is that it includes a first layer structure and a second layer structure arranged in an overlapping manner, a fixed gear is fixedly installed on the end of the first layer structure, and a revolving gear is rotatably installed on the end of the second layer structure, and the revolving gear can maintain meshing transmission with the fixed gear. A driving component is provided on the first layer structure, and the driving component is used to drive the revolving gear to rotate around the circumference of the fixed gear so that the second layer structure can flip forward and backward relative to the first layer structure.

[0007] With the above structure, the driving assembly drives the revolving gear to rotate circumferentially around the fixed gear, which can drive the second layer structure to flip backward to a horizontal state relative to the first layer structure.

[0008] Preferably, the driving assembly includes a rotating arm rotatably arranged on the side of the first layer structure and a second driver driving 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 sleeved with the revolving gear.

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

[0010] Preferably: a retaining frame is provided between the fixed gear and the revolving gear, and the retaining frame is used to enable the revolving gear and the fixed gear to maintain a continuous meshing state; the driving assembly includes a transmission gear rotatably installed at the rear end of the first layer structure and a first driver that drives the transmission gear to rotate, the transmission gear is coaxially arranged with the fixed gear, and the transmission gear is meshed with the revolving gear.

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

[0012] Preferably, the revolving gear is a duplex gear having two annular tooth portions, and the fixed gear and the transmission gear are respectively meshed with the two annular tooth portions.

[0013] Preferably, the fixed gears and the corresponding revolving gears, transmission gears and retaining frames are provided in two groups, and the two groups of fixed gears are respectively fixed on both sides of the rear end of the first layer structure.

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

[0015] Preferably, two ends of the retaining frame are rotatably connected to the axial positions of the fixed gear and the revolving gear through two pins respectively.

[0016] Preferably, the first layer structure and the second layer structure constitute two layers of seat cushions arranged overlapping each other;

[0017] Alternatively, the first layer structure and the second layer structure constitute two layers of backrest arranged to overlap each other.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The double-layer structure flipping drive device provided by the present invention is adopted. The driving 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. With gear transmission, after shutdown, the meshing self-locking effect between the gears can be used to keep the second layer structure stably in a horizontal state, thereby ensuring the reliability and stability of the movement between the first layer structure and the second layer structure.

[0020] 2. The double-layer structure flipping drive device provided by the present invention is applied to the double-layer structure seat cushion of a car seat. In the sitting state, the upper seat cushion and the lower seat cushion are arranged overlappingly, and the revolving gear is located on the upper side of the fixed gear. The driving assembly drives the revolving gear to revolve circumferentially around the fixed gear. Under the retaining action of the retaining frame, the rear end of the upper seat cushion can be driven to rotate backward around the rear end of the lower seat cushion, thereby driving the upper seat cushion to flip backward to a horizontal state relative to the lower seat cushion, thereby achieving the purpose of expanding the support area and ensuring the feasibility of the seat being transformed into a bed.

[0021] 3. The double-layer structure flip drive device provided by the present invention has the advantages of high transmission efficiency and high motion accuracy, which improves the stability of the rotation of the second-layer structure; secondly, during transmission, the vibration generated between the gears is small, which can reduce the transmission noise and improve the user experience. In addition, each gear is small in size, light in weight, and has a strong bearing capacity, which is particularly suitable for use in automobiles with limited space. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the double-layer structure flip driving device when overlapping;

[0023] Figure 2 It is a right side view of the double-layer structure flip drive device when overlapping (the retaining frame 3 is hidden);

[0024] Figure 3 It is a schematic diagram of the structure of the double-layer structure flip driving device when it is unfolded;

[0025] Figure 4 It is a rear view of the double-layer structure flip driving device when overlapping;

[0026] Figure 5 It is a structural schematic diagram of the double-layer structure flip drive device when applied to a seat cushion (sitting position);

[0027] Figure 6 Another structural schematic diagram of the double-layer structure flip drive device when applied to a seat cushion (in the unfolded state);

[0028] Figure 7 It is a structural schematic diagram of the double-layer structure flip drive device when applied to the backrest (sitting state);

[0029] Figure 8 Another structural schematic diagram of the double-layer structure flip drive device when applied to a backrest (in the unfolded state);

[0030] Fig. 9 It is a schematic structural diagram of another embodiment of the double-layer structure flip drive device when it is applied to a seat cushion. DETAILED DESCRIPTION

[0031] The present invention is further described below in conjunction with embodiments and drawings.

[0032] This embodiment takes the application of the double-layer structure flip driving device on a double-layer structure seat cushion as an example for detailed description.

[0033] like Figure 2 and 5 As shown, a double-layer structure flip drive device includes a first layer structure 1 and a second layer structure 2 arranged in an overlapping manner. The first layer structure 1 and the second layer structure 2 constitute two layers of seat cushions arranged in an overlapping manner, that is, the first layer structure 1 and the second layer structure 2 correspond to the lower layer seat cushion and the upper layer seat cushion respectively. The first layer structure 1 is assembled inside the car through the mounting base 6. A fixed gear 41 is fixedly installed at the rear end of the first layer structure 1, and a revolving gear 42 is rotatably installed at the rear end of the second layer structure 2. The revolving gear 42 can maintain meshing transmission with the fixed gear 41. Figure 6 As shown, the first layer structure 1 is provided with a driving assembly 4, which can drive the revolving gear 42 to rotate around the circumference of the fixed gear 41, so that the upper seat cushion can be flipped backward to a horizontal state relative to the lower seat cushion.

[0034] Based on the above structural design, when the seat is in the sitting position, the upper and lower cushions are arranged overlappingly, the revolving gear 42 is located on the upper side of the fixed gear 41, and the driving assembly 4 drives the revolving gear 42 to rotate around the circumference of the fixed gear 41, which can drive the rear end of the upper cushion to rotate backward around the rear end of the lower cushion, thereby driving the upper cushion to flip backward to a horizontal state relative to the lower cushion, thereby achieving the purpose of expanding the support area and ensuring the feasibility of the seat being transformed into a bed. In addition, by adopting gear transmission, after stopping, the upper cushion can be stably kept in a horizontal state by virtue of the meshing self-locking effect between the gears.

[0035] Furthermore, Figure 1 and 4As shown, a retainer 3 is provided between the fixed gear 41 and the revolving gear 42, and the two ends of the retainer 3 are respectively rotatably sleeved on 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 driving assembly 4 includes a transmission gear 43 rotatably mounted on 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 is meshed with the revolving gear 42. The first driver 44 drives the transmission gear 43 to rotate. Since the fixed gear 41 is fixedly mounted on the rear end of the lower cushion, and the revolving gear 42 is rotatably mounted on the rear end of the upper cushion, the revolving gear 42 is meshed with the fixed gear 41 and the transmission gear 43. Therefore, the rotation of the transmission gear 43 can drive the revolving gear 42 to rotate, and at the same time revolve around the axis of the fixed gear 41, that is, it can drive the upper cushion to fall back relative to the lower cushion. The transmission using such a structure has the advantages of high transmission efficiency and high movement precision, which improves the stability of the rotation of the upper seat cushion; secondly, during transmission, the vibration generated between the gears is small, which can reduce the transmission noise and enhance the user experience. In addition, each gear is small in size, light in weight, and has a strong load-bearing capacity, which is particularly suitable for use 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. Such a design can ensure that the structure of the fixed gear 41, the revolving gear 42 and the transmission gear 43 is minimized. In actual application, 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, thereby improving the overall aesthetics of the seat.

[0037] In addition, the revolving gear 42 can also be a double gear, which has two annular teeth. The fixed gear 41 and the transmission gear 43 are respectively meshed with the two annular teeth. The rotation of the transmission gear 43 can also drive the revolving gear 42 to rotate and revolve around the fixed gear 41.

[0038] Depend on Figure 4 It can be seen that in this embodiment, the number of fixed gears 41, revolving gears 42, transmission gears 43 and retaining frame 3 are all provided in two groups, and they correspond one to one. The two groups of fixed gears 41 are respectively fixed on both sides of the rear end of the first layer structure 1, the two groups of revolving gears 42 are respectively rotatably installed on both sides of the rear end of the upper layer seat cushion 2, and the two groups of transmission gears 43 are respectively rotatably arranged on both sides of the rear end of the first layer structure 1. In the transmission mechanism on the same side, the transmission gear 43 is coaxially arranged with the fixed gear 41, and the transmission gear 43 is located on the inner side of the fixed gear 41, and the retaining frame 3 is arranged at the outer end, and both ends of the retaining frame 3 are rotatably connected to the axial positions of the fixed gear 41 and the revolving gear 42 respectively through the pin shaft b.

[0039] Please refer to Figure 1 and 3 A synchronization rod 45 is connected between the two transmission gears 43. The first driver 44 drives the synchronization 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 while revolving around the corresponding fixed gears 41, thereby driving the upper seat cushion 2 to flip backward to a horizontal state.

[0040] Re-attend 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, wherein the output component 442 is fixedly sleeved on the synchronization rod 45, and the base of the motor 441 is fixedly connected to the first layer structure 1 through an adapter frame a.

[0041] The specific implementation of the driving assembly 4 driving the revolving gear 42 to rotate circumferentially around the fixed gear 41 can also be referred to Fig. 9 As shown, the driving assembly 4 includes a rotating arm 46 rotatably arranged at the side of the first layer structure 1 and a second driver 47 driving 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 sleeved with the revolving gear 42. The second driver 47 drives the rotating arm 46 to rotate backward around the rotation center between it and the first layer structure 1, which can drive the revolving gear 42 to rotate circumferentially around the fixed gear 41, thereby driving the upper layer seat cushion to flip backward relative to the lower layer seat cushion to a horizontal state.

[0042] For details, please refer to Fig. 9 , the rotating arm 46 is arranged on the outside of the fixed gear 41, and 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 rotating arm 46 on the outside. The second driver 47 drives the output shaft 471 to rotate, which can drive the rotating arm 46 to rotate. In this embodiment, the number of fixed gears 41, revolving gears 42 and rotating arms 46 is provided in two groups, and they correspond one to one. The two groups of fixed gears 41 are respectively located on both sides of the rear end of the first layer structure 1, and the two groups of revolving gears 42 are respectively 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 groups of rotating arms 46 respectively. The second driver 47 drives the output shaft 471 to rotate, which can drive the rotating arms 46 on both sides of the first layer structure 1 to rotate synchronously.

[0043] In addition to the above implementations, Figure 7 and 8As shown, the drive device can be applied to a backrest of a double-layer structure of a car seat, the first layer structure 1 and the second layer structure 2 correspond to the front backrest and the rear backrest respectively, 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 as a whole, the drive component 4 can drive the rear backrest to flip backward to a horizontal state relative to the front backrest, so as to achieve the purpose of expanding the supporting area.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make various similar expressions without violating the purpose and claims of the present invention, and such changes all fall within the scope of protection of the present invention.

Claims

1. A double-layer structure flip driving device, characterized in that: The invention comprises a first layer structure (1) and a second layer structure (2) which are arranged in an overlapping manner. A fixed gear (41) is fixedly mounted on the end of the first layer structure (1). A revolving gear (42) is rotatably mounted on the end of the second layer structure (2). The revolving gear (42) can maintain meshing transmission with the fixed gear (41). A driving assembly (4) is provided on the first layer structure (1). The driving assembly (4) is used to drive the revolving gear (42) to rotate around the fixed gear (41) so that the second layer structure (2) can be flipped forward and backward relative to the first layer structure (1).

2. The double-layer structure turning driving device according to claim 1 is characterized in that: The driving assembly (4) includes a rotating arm (46) rotatably arranged on the side of the first layer structure (1) and a second driver (47) driving 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 sleeved with the revolving gear (42).

3. The double-layer structure turning driving device according to claim 2 is characterized in that: The rotating arm (46) is arranged on the outside of the fixed gear (41), and the second driver (47) has an output rotating shaft (471). The output rotating shaft (471) passes through the fixed gear (41) from the inside to the outside and is fixedly connected to the rotating arm (46) on the outside.

4. The double-layer structure turning driving device according to claim 1, characterized in that: A retaining frame (3) is provided between the fixed gear (41) and the revolving gear (42), and the retaining frame (3) is used to enable the revolving gear (42) and the fixed gear (41) to maintain a continuous meshing state; the driving assembly (4) comprises a transmission gear (43) rotatably mounted at the rear end of the first layer structure (1) and a first driver (44) driving the transmission gear (43) to rotate, the transmission gear (43) and the fixed gear (41) are coaxially arranged, and the transmission gear (43) is meshed with the revolving gear (42).

5. The double-layer structure turning driving device according to claim 4 is characterized in that: The transmission ratio among the fixed gear (41), the revolving gear (42) and the transmission gear (43) is 1:1:

1.

6. The double-layer structure turning driving device according to claim 4, characterized in that: The revolving gear (42) is a double gear having two annular toothed portions, and the fixed gear (41) and the transmission gear (43) are respectively meshed with the two annular toothed portions.

7. The double-layer structure turning driving device according to claim 4, characterized in that: The fixed gear (41) and the corresponding revolving gear (42), transmission gear (43) and retaining frame (3) are each provided with two groups, and the two groups of fixed gears (41) are respectively fixedly arranged on both sides of the rear end of the first layer structure (1).

8. The double-layer structure turning driving device according to claim 7, characterized in that: A synchronization rod (45) is connected between the two groups of transmission gears (43), and the first driver (44) drives the synchronization rod (45) to rotate, thereby driving the two groups of transmission gears (43) to rotate synchronously.

9. The double-layer structure turning driving device according to claim 4, characterized in that: The two ends of the retaining frame (3) are rotatably connected to the axial positions of the fixed gear (41) and the revolving gear (42) through two pin shafts (b) respectively.

10. The double-layer structure turning driving device according to claim 1, characterized in that: The first layer structure (1) and the second layer structure (2) constitute two layers of seat cushions that are arranged overlapping each other; Alternatively, the first layer structure (1) and the second layer structure (2) constitute two layers of backrest arranged overlapping each other.

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