Automobile seat turnover mechanism
By designing a main flipping mechanism and an auxiliary flipping mechanism, the problem of needing to replace the entire seat flipping mechanism or add components in the existing technology is solved, which simplifies and stabilizes the seat flipping process, and reduces costs and operational difficulty.
Patent Information
- Application Number
- CN202422981827.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-04
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-12-04
AI Technical Summary
Existing car seat flipping mechanisms require replacing the entire drive motor, worm gear assembly, and planetary gear assembly when dealing with seats of different weights, or adding components such as brackets, gear plates, and springs to match the seat weight, resulting in complex structures and inconvenient operation.
It adopts a main tilting mechanism and an auxiliary tilting mechanism. The main tilting mechanism uses the gear set in the gearbox and the angle adjustment motor to reduce speed and output torque, while the auxiliary tilting mechanism provides assistance through double springs to reduce vibration and realize the seat tilting function. Only the angle adjustment motor or gearbox needs to be replaced to match the weight of the seat.
It simplifies and makes operation of the seat flipping function easier, reduces development costs, and ensures smooth flipping through gear meshing and dual spring assistance, avoiding the need for replacing all parts.
Smart Images
Figure CN223494353U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of automotive seats, specifically relating to an automotive seat flipping mechanism. Background Technology
[0002] During the design process of car seats, in order to facilitate users' sitting and lying needs and to provide more storage space in the rear of the car, a flipping mechanism is provided on both sides of the rear seats. When it is necessary to rest or to make the storage space in the rear of the car larger, the flipping mechanism is controlled to flip the rear seats backward into the trunk's rear recess, so that the flipped rear seats are level with the rear footrest, forming a space for rest or storage.
[0003] The existing flipping mechanism uses a drive motor as the power unit, in conjunction with a worm gear assembly and a planetary gear assembly, to drive the rear seats to flip. However, the drive motor, worm gear assembly, and planetary gear assembly need to be adapted to meet the weight of the existing seats. When the weight of the seats exceeds a certain range, the entire drive motor, worm gear assembly, and planetary gear assembly need to be replaced, or new brackets, gear plates, springs, and other components need to be added to increase the output torque to match the weight of the current seats in order to realize the function of flipping the rear seats. Utility Model Content
[0004] The purpose of this utility model is to solve the above-mentioned problems and provide a car seat flipping mechanism. This flipping mechanism can match seats of different weights to realize the seat flipping function. When the weight exceeds a certain range, only the matching angle adjustment motor or gearbox needs to be replaced. There is no need to replace the whole thing, nor is it necessary to add new brackets, gear plates, springs and other components. The structure is simpler and the operation is more convenient.
[0005] To achieve the above objectives, this utility model provides an automotive seat flipping mechanism, including a main flipping mechanism. The main flipping mechanism includes a first bracket connected to the vehicle body, a gearbox bracket fixedly connected to the first bracket, an angle-adjusting motor mounted on the gearbox bracket, the output end of the angle-adjusting motor connected to one end of a synchronizing rod, the other end of the synchronizing rod passing through the gearbox bracket and connected to one end of a gearbox inside the gearbox bracket, the other end of the gearbox having a first rotating shaft, one end of the first rotating shaft fixedly connected to a first frame connecting bracket, the other end of the first rotating shaft passing through a first pull-wire wheel, the side wall of the gearbox bracket, the gearbox, and the other side wall of the gearbox bracket, and then being limited and fixed by a first nut, the first pull-wire wheel being engaged with the gearbox bracket.
[0006] As a further optimization, the gearbox includes a housing and a gear set disposed inside the housing. The gear set includes an input gear, at least one transmission gear, and an output gear. The synchronizing rod passes through the housing and the input gear and is connected to one end of the gearbox. The input gear meshes with the transmission gear, and the transmission gear meshes with the output gear. The first rotating shaft passes through the housing and the output gear and is connected to the other end of the gearbox.
[0007] As a further optimization, each gear in the gearbox is provided with a first self-lubricating bushing at the connection between the gear and the housing.
[0008] As a further optimization, a second self-lubricating bushing is provided at the connection point between the end of the first rotating shaft away from the first frame connecting bracket and the gearbox bracket.
[0009] As a further optimization, the gearbox bracket is provided with at least one first claw on the side wall opposite to the first pull wire wheel, and the first pull wire wheel is provided with at least one first slot opposite to the first claw. The first pull wire wheel is engaged with the gearbox bracket through the mutual cooperation of the first slot and the first claw.
[0010] As a further optimization, this application also includes an auxiliary tilting mechanism, which includes a second frame connecting bracket connected to the seat frame. The second frame connecting bracket is fixedly connected to one end of a second rotating shaft. The other end of the second rotating shaft passes through a second pull cable wheel, a connecting side wall on one side of a spring fixing bracket, a first spring, a spring limiting cover, a second spring, and the connecting side wall on the other side of the spring fixing bracket, and is then fixed by a second nut. The second pull cable wheel is engaged with the connecting side wall of the spring fixing bracket. Two oppositely installed first springs and second springs are provided between the two connecting side walls of the spring fixing bracket. The first arms on the two springs are engaged with the second claws at the top of the spring fixing bracket. The second arms on the two springs abut against the second rotating shaft. A spring limiting cover is provided between the two springs. The spring limiting cover is engaged with the spring fixing bracket. The spring fixing bracket is fixedly connected to the second bracket. The auxiliary tilting mechanism is connected to the vehicle body through the second bracket.
[0011] As a further optimization, the spring fixing bracket is provided with at least one third claw on the connecting side wall on the side opposite to the second pull wire wheel, and the second pull wire wheel is provided with at least one second slot at the position opposite to the third claw. The second pull wire wheel is engaged with the spring fixing bracket through the mutual cooperation of the second slot and the third claw.
[0012] As a further optimization, the spring fixing bracket includes a fixing bracket body. The fixing bracket body has upwardly bent connecting sidewalls on both sides of its lateral direction. The two connecting sidewalls have connecting holes for the second rotating shaft to pass through at their relative positions. The connecting sidewall of the fixing bracket body on the side opposite to the second pull wire wheel is provided with at least one third claw. The top of the two connecting sidewalls on both sides is provided with two second claws arranged in opposite directions. The fixing bracket body has locking arms that bend inward towards the fixing bracket body on both sides of its longitudinal direction. The locking arms have locking slots that engage with the spring limiting cover.
[0013] As a further optimization, the spring limiting cover includes an outer cover body. The middle position of the outer cover body has a first clearance opening to avoid the second rotating shaft. The longitudinal ends of the outer cover body have limiting arms extending laterally to both sides. The two limiting arms on the side of the outer cover body opposite to the first spring are the first limiting arms, and the two limiting arms on the side opposite to the second spring are the second limiting arms. The first and second limiting arms have the same structure. A second clearance opening to avoid the second claw and the first arm is provided at the top of the two second limiting arms. A receiving cavity to accommodate the second spring is formed between the two sides below the second clearance opening. The spring limiting cover separates the first spring and the second spring on the lateral sides of the outer cover body, and limits the first spring and the second spring through the mutual cooperation between the first limiting arm and the connecting side wall and the second limiting arm and the connecting side wall. The outer sides of the first and second limiting arms have a fourth claw that engages with the spring fixing bracket.
[0014] As a further optimization, a third self-lubricating bushing is provided between the second rotating shaft and the connecting hole on the connecting side wall.
[0015] Advantages and beneficial effects of this utility model
[0016] 1. This utility model provides a main flipping mechanism and an auxiliary flipping mechanism on both sides of the rear seat. The main flipping mechanism is used to flip the rear seat as a whole to realize the function of hiding the seat. The auxiliary flipping mechanism is used to assist the main flipping mechanism to reduce the shaking phenomenon generated when the seat flips backward and to provide assistance to the main flipping mechanism when the seat flips forward as a whole, so as to reduce the rotational load of the angle adjustment motor.
[0017] 2. The main tilting mechanism in this utility model uses an angle-adjusting motor as a power device. The gear set in the gearbox reduces speed and increases output torque. The output torque is transmitted to the first frame connecting bracket connected to the seat frame through the first rotating shaft. The first frame connecting bracket drives the seat to tilt. The angle-adjusting motor and gearbox in this application do not need to be adapted. When the weight of the seat exceeds a certain range, the angle-adjusting motor or gearbox that matches the current weight of the seat can be replaced. There is no need to replace the whole thing, nor is it necessary to add new brackets, gear plates, springs and other components. The structure is simpler, the operation is more convenient, and the development cost is saved. At the same time, the gear meshing makes the seat more stable when tilting as a whole.
[0018] 3. The auxiliary flipping mechanism in this utility model uses double springs for assistance, and the double springs are installed in opposite directions in the spring fixing bracket. The first arm on each spring engages with the second claws on the top of the spring fixing bracket, which are arranged in opposite directions. The second arm on each spring abuts against the second rotating shaft. When the second rotating shaft rotates, since the two springs are installed in opposite directions, one spring is in a tightened, stored state when the second rotating shaft rotates, while the other spring is in a relaxed, released state. Regardless of whether the second rotating shaft rotates counterclockwise or clockwise, both springs are working and generating corresponding forces.
[0019] 4. The auxiliary flipping mechanism in this utility model has a spring limiting cover attached to the spring fixing bracket. The spring limiting cover separates the first spring and the second spring on the left and right sides of the cover body. The cover body and the connecting side wall on the corresponding side cooperate to limit the spring on the corresponding side, preventing the spring from shifting and producing abnormal noise when rotating with the second rotating shaft. It can also prevent the spring from popping out and causing safety hazards. At the same time, it can also protect the spring and prevent foreign objects from entering. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the main flipping mechanism provided in an embodiment of the present invention;
[0022] Figure 2 This is a utility model Figure 1 An exploded view of the first support and the first frame connecting support after removing the first support bracket;
[0023] Figure 3 This is a schematic diagram of the gearbox structure provided in an embodiment of the present utility model;
[0024] Figure 4 This is a utility model Figure 3 Schematic diagram of the internal structure of the intermediate gearbox;
[0025] Figure 5 This is a schematic diagram of the auxiliary flipping mechanism provided in an embodiment of the present invention;
[0026] Figure 6 This is a utility model Figure 5 An exploded view of the middle section after removing the second support and the connecting support between the second frame and the frame.
[0027] Figure 7 This is a schematic diagram of the spring limiting cover and the spring fixing bracket after disassembly in an embodiment of this utility model;
[0028] Figure 8 This is a schematic diagram of the connection between the double springs, the spring fixing bracket, and the second rotating shaft in an embodiment of this utility model;
[0029] Figure 9 This is a schematic diagram of the structure of the spring fixing bracket in an embodiment of this utility model;
[0030] Figure 10 This is a schematic diagram of the rear seats in use in this utility model;
[0031] Figure 11 This is a schematic diagram of the backrest of the rear seat in this utility model after it has been flipped forward;
[0032] Figure 12 This is a schematic diagram of the rear seats flipping into the pit in this utility model.
[0033] Reference numerals: Main flipping mechanism 1, first bracket 11, gearbox bracket 12, first chuck 121, angle adjusting motor 13, synchronizing rod 14, gearbox 15, housing 151, gear set 152, input gear 1521, transmission gear 1522, output gear 1523, first self-lubricating bushing 153, first rotating shaft 16, first frame connecting bracket 17, first pull wire wheel 18, first slot 181, first hole 182, first nut 19, second self-lubricating bushing 20, auxiliary flipping mechanism 2, second frame connecting bracket 21, second rotating shaft 22, second pull wire wheel 23, second slot 231. Spring fixing bracket 24, fixing bracket body 241, connecting side wall 242, connecting hole 243, third claw 244, second claw 245, locking arm 246, locking slot 247, first spring 25, first support arm 251, second support arm 252, spring limiting cover 26, cover body 261, first clearance opening 262, first limiting arm 263, second limiting arm 264, clearance opening 265, receiving cavity 266, fourth claw 267, second spring 27, second bracket 28, second nut 29, third self-lubricating bushing 210, rear seat 3, seat cushion 31, backrest 32, body 4 and tail pit 41. Detailed Implementation
[0034] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein.
[0035] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0036] like Figures 10-12 As shown, a car seat flipping mechanism includes a main flipping mechanism 1, which is disposed between the side of the rear seat 3 and the vehicle body. The main flipping mechanism 1 is used to flip the rear seat 3 as a whole, thereby achieving the function of hiding the rear seat. Figure 1As shown, the main tilting mechanism 1 includes a first bracket 11 connected to the vehicle body. A gearbox bracket 12 is fixedly connected to the first bracket 11. The gearbox bracket 12 has a U-shaped cross-section and is fixed to the first bracket 11 via a base plate. An angle-adjusting motor 13 is bolted to the right side wall. The angle-adjusting motor 13 is connected to the vehicle's control system via a wire. The vehicle's control system controls the switching and output performance of the angle-adjusting motor 13. The output end of the angle-adjusting motor 13 has a splined hole. The synchronizing rod 14 is a splined shaft, and the angle-adjusting motor 13 is connected to the synchronizing rod 14 via the splined hole. One end is connected to the gearbox bracket 12 and the other end of the synchronizing rod 14 passes through the gearbox bracket 12 and the gearbox 15, and is rotatably connected to one end of the gearbox 152. The angle-adjusting motor 13 drives the gearbox 152 to rotate through the synchronizing rod 14, thereby reducing speed and increasing output torque through the gearbox 152. The other end of the gearbox 152 is provided with a first rotating shaft 16. One end of the first rotating shaft 16 is fixedly connected to the first frame connecting bracket 17. The main tilting mechanism 1 is connected to the seat frame through the first frame connecting bracket 17. The other end of the first rotating shaft 16 passes through the first pull wire in sequence. The first shaft 16 and its components are axially fixed by a first nut 19 at the left side wall of the gearbox bracket 12, the gear set 152 inside the gearbox 15, and the right side wall of the gearbox bracket 12 to prevent axial movement. Three first claws 121 are provided on the left side wall of the gearbox bracket 12. Three first slots 181 are provided on the first pull-wire wheel 18 relative to the first claws 121. The first pull-wire wheel 18 engages with the gearbox bracket 12 through the cooperation of the first slots 181 and the first claws 121. A first locking hole is provided on the first pull-wire wheel 18. 182. The first pull cable wheel 18 is engaged with a locking block at one end of the pull cable through the first locking hole 182. The other end of the pull cable is connected to the floor lock at the bottom of the seat. When the rear seat is flipped backward, the pull cable between the first pull cable wheel 18 and the floor lock will tighten as the seat flips backward, thereby driving the floor lock to rotate and retract into the seat base, thus locking the seat. When the rear seat is flipped forward, the pull cable between the first pull cable wheel 18 and the floor lock will loosen as the seat flips forward, thereby driving the floor lock back to its original position and locking it with the vehicle body latch.
[0037] like Figure 3 and Figure 4As shown, the gearbox 15 includes left and right housings 151 and a gear set 152 disposed inside the housings 151. The gear set 152 includes an input gear 1521, at least one transmission gear 1522, and an output gear 1523. The transmission gear 1522 can be increased or decreased according to the current weight of the seat. By changing the transmission ratio, the gearbox 15 can be matched to the weight of the existing seat. In this embodiment, one transmission gear 1522 is used as an example. The synchronizing rod 14 passes through the housing 151 and is connected to the input gear 1521. The input gear 1521 meshes with the transmission gear 1522, and the transmission gear 1522 meshes with the output gear 1523. 3. Engagement: The output gear 1523 has a first rotating shaft 16 inside its cross hole. The synchronizing rod 14 is driven to rotate by the angle-adjusting motor 13. The synchronizing rod 14 drives the gear set 152 to rotate, thereby transmitting torque to the first rotating shaft 16 through the gear set 152. Since the first rotating shaft 16 is fixedly connected to the first frame connecting bracket 17, torque can be transmitted to the rear seat through the first frame connecting bracket 17, realizing the overall flipping of the rear seat. Since the angle-adjusting motor 13 and the gearbox 15 in this application do not need to be adapted, when the weight does not match the existing seat, the gearbox 15 or the angle-adjusting motor 13 can be replaced with a matching one.
[0038] For further optimization, such as Figure 2 As shown, in this embodiment, a first self-lubricating bushing 153 is provided at the connection between each gear and the housing 151, and a second self-lubricating bushing 20 is provided at the connection between the right end of the first rotating shaft 16 and the gearbox bracket 12. The first lubricating bushing 153 and the second self-lubricating bushing 20 play the roles of noise reduction and lubrication.
[0039] As a further optimization, this application also includes an auxiliary tilting mechanism 2, which is arranged along the same axis as the main tilting mechanism 1 on the other side of the seat frame between the main tilting mechanism 1 and the vehicle body. The auxiliary tilting mechanism 2 assists the main tilting mechanism 1 in reducing the vibration generated during seat tilting. The structure of the auxiliary tilting mechanism 2 is as follows: Figure 5 and Figure 6As shown, the device includes a second frame connecting bracket 21 connected to the seat frame. The second frame connecting bracket 21 is fixed to one end of a second rotating shaft 22. The other end of the second rotating shaft 22 passes sequentially through a second pull cable wheel 23, the connecting side wall 242 on the right side of the spring fixing bracket 24, a first spring 25, a spring limiting cover 26, a second spring 27, and the connecting side wall 242 on the left side of the spring fixing bracket 24, and is then fixed by a second nut 29 to prevent axial movement of the second rotating shaft 22 and its components. The second pull cable wheel 23 is engaged with the connecting side wall 242 on the right side of the spring fixing bracket 24. Two first springs 25 and second springs 27, installed in opposite directions, are provided between the two connecting side walls 242 of the spring fixing bracket 24. The first arms 251 on the two springs are engaged with the second claws 245 at the top of the spring fixing bracket 24, and the second arms 252 on the two springs abut against the second rotating shaft. On the square surface of 22, when the second rotating shaft 22 rotates, the first spring 25 and the second spring 27 rotate with the second rotating shaft 22. Since the first rotating shaft 25 and the second rotating shaft 27 are installed in two opposite directions, one spring is in a tightened, stored state when rotating with the second rotating shaft 22, and the other spring is in a relaxed, released state when rotating with the second rotating shaft 22. In order to prevent the two springs from shifting or popping out during operation, this embodiment provides a spring limiting cover 26 between the two springs. The spring limiting cover 26 separates the two springs on the left and right sides of the spring limiting cover 26, and limits the two springs by cooperating with the connecting sidewalls 242 on both sides of the spring fixing bracket 24. The front and rear ends of the spring limiting cover 26 are engaged with the spring fixing bracket 24. The spring fixing bracket 24 is fixedly connected to the second bracket 28. The auxiliary flipping mechanism 2 is connected to the vehicle body through the second bracket 28.
[0040] like Figures 7-9As shown, the spring fixing bracket 24 includes a fixing bracket body 241. The fixing bracket body 241 has upwardly bent connecting sidewalls 242 on both lateral sides. The two connecting sidewalls 242 have connecting holes 243 for the second rotating shaft 22 to pass through at their relative positions. The connecting sidewall 242 on the right side of the spring fixing bracket 24 has three third claws 244. The second pull cable wheel 23 has three second slots 231 at positions opposite to the third claws 244. The second pull cable wheel 23 engages with the spring fixing bracket 24 through the cooperation of the second slots 231 and the third claws 244. The second pull cable wheel 23 has second locking holes, which engage with a locking block at one end of the pull cable. The other end of the pull cable is connected to a floor lock at the bottom of the seat. When the rear seat is flipped backward, because the second pull cable wheel 23 remains stationary, the second pull cable wheel 23... The cable between the second cable pull wheel 23 and the ground lock tightens as the seat flips backward, causing the ground lock to rotate and retract into the seat base, thus locking the seat. When the rear seats flip forward as a whole, the cable between the second cable pull wheel 23 and the ground lock loosens as the seat flips forward, causing the ground lock to return to its original position and lock with the vehicle body latch. The top of the connecting sidewalls 242 on both sides has two second claws 245 arranged in opposite directions. The spring fixing bracket 24 is engaged with the first support arm 251 on the first spring 25 and the second spring 27 through the second claws 245. The left and right sides of the front and rear ends of the fixing bracket body 241 have engagement arms 246 that bend inward toward the fixing bracket body 241. The engagement arms 246 have latches 247. The front and rear ends of the spring limiting cover 26 are engaged with the spring fixing bracket 24 through the latches 247.
[0041] like Figure 7As shown, the spring limiting cover 26 includes a cover body 261. The cover body 261 has a first clearance opening 262 at its middle position to avoid the second rotating shaft 22. The cover body 261 has limiting arms extending to the left and right at its front and rear ends. The two limiting arms on the side of the cover body 261 opposite the first spring 25 are first limiting arms 263, and the two limiting arms on the side opposite the second spring 27 are second limiting arms 264. The first limiting arms 263 and the second limiting arms 264 have the same structure. This embodiment uses the second limiting arms as an example. At the top of the two second limiting arms 264, there are second clearance openings 265 to avoid the second claw 245 and the first support arm 251. Below the second clearance openings 265... A receiving cavity 266 is formed between the two sides of the square to accommodate the second spring 27. The spring limiting cover 26 separates the first spring 25 and the second spring 27 on the left and right sides of the cover body 261 through the outer cover body 261. The first spring 25 and the second spring 27 are limited by the mutual cooperation of the first limiting arm 263 with the right connecting side wall 242 and the mutual cooperation of the second limiting arm 264 with the left connecting side wall 242, so as to prevent the first spring 25 and the second spring 27 from shifting or popping out during operation. The outer sides of the first limiting arm 263 and the second limiting arm 264 are equipped with a fourth claw 267. The spring limiting cover 26 is engaged with the slot 247 on the spring fixing bracket 24 through the fourth claw 267.
[0042] As a further optimization, a third self-lubricating bushing 210 is provided between the second rotating shaft 22 and the connecting hole 243 on the connecting side wall 242. The third self-lubricating bushing 210 plays the role of noise reduction and lubrication.
[0043] Work process
[0044] like Figure 10 As shown, Figure 10 The rear seat 3 is in its normal use position. The main flip mechanism 1 and the auxiliary flip mechanism 2 are located on the left and right sides of the seat cushion 31. To flip the rear seat 3 as a whole into the rear pit 41 of the vehicle body 4, the backrest 32 of the rear seat 3 needs to be flipped forward to fit against the seat cushion 31 (see...). Figure 11 The rear seats 3 are flipped backward by the main flipping mechanism 1 into the rear pit 41 of the vehicle body. The auxiliary flipping mechanism 2 assists the flipping mechanism 1 in flipping, reducing the rotational load on the angle adjustment motor. The following is a detailed description of the overall flipping process of the rear seats 3:
[0045] First, the vehicle control system controls the angle adjustment motor 13 to rotate counterclockwise. The angle adjustment motor 13 drives the synchronizing rod 14 to rotate counterclockwise, which in turn drives the gear set 152 in the gearbox 15 to rotate. The torque output by the angle adjustment motor 13 is transmitted to the first rotating shaft 16 connected to the gear set 152 through the synchronizing rod 14 and the gear set 152. The first rotating shaft 16 drives the first frame connecting bracket 17 and the rear seat 3 connected to the first frame connecting bracket 17 to flip backward as a whole. At the same time, the flipping of the rear seat 3 drives the second frame connecting bracket 21 connected to it to rotate. The rotation of the second frame connecting bracket 21 drives the second rotating shaft 22, the first spring 25 and the second spring 27 on the second rotating shaft 22 to fix the spring bracket 24. As the rear seats rotate and the spring limit cover 26 rotates, the cables between the first cable wheel 18 and the floor lock, and between the second cable wheel 23 and the floor lock, tighten as the seats rotate. This causes the floor lock to rotate and retract into the seat base, locking the seats. Simultaneously, one spring between the first spring 25 and the second spring 27 is in a tightened state, accumulating spring potential energy, while the other spring is in a relaxed state, releasing spring potential energy. Because the rotation angles of the two springs are different, their contraction forces are different. At this time, the potential energy released by the spring is less than the potential energy accumulated by the spring, providing resistance to the seat when it rotates backward, preventing the seat from shaking when it rotates backward as a whole.
[0046] When the rear seat 3 is flipped forward, the vehicle control system controls the adjustment motor 13 to rotate clockwise. The adjustment motor 13 drives the synchronizing rod 14 to rotate clockwise, which in turn drives the gear set 152 in the gearbox 15 to rotate. The torque output by the adjustment motor 13 is transmitted to the first rotating shaft 16 connected to the gear set 152 through the synchronizing rod 14 and the gear set 152. The first rotating shaft 16 drives the first frame connecting bracket 17 and the rear seat 3 connected to the first frame connecting bracket 17 to flip forward as a whole. At the same time, the overall flipping of the rear seat 3 drives the second frame connecting bracket 21 connected to it to rotate. The rotation of the second frame connecting bracket 21 drives the second rotating shaft 22, the first spring 25 and the second spring 27 on the second rotating shaft 22 to rotate relative to each other. The fixed bracket 24 and the spring limiting cover 26 rotate. At this time, the states of the two springs switch with each other. The spring in the tightened state becomes the spring in the relaxed state, and the spring in the relaxed state becomes the spring in the tightened state. At this time, the potential energy released by the spring is greater than the potential energy stored in the spring, which can provide assistance to the rear seat 3, thereby reducing the rotational load of the angle adjustment motor 13. At the same time, as the rear seat flips forward as a whole, the cable between the first cable wheel 18 and the ground lock and the cable between the second cable wheel 23 and the ground lock will be relaxed as the seat flips forward, thereby driving the ground lock back to its original position and locking with the latch of the vehicle body. When the rear seat returns to its original position, the forces on both sides of the first spring 25 and the second spring 27 cancel each other out.
[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit them. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the present utility model.
Claims
1. A car seat flipping mechanism, characterized in that: The system includes a main tilting mechanism (1), which includes a first bracket (11) connected to the vehicle body. A gearbox bracket (12) is fixedly connected to the first bracket (11). An angle-adjusting motor (13) is provided on the gearbox bracket (12). The output end of the angle-adjusting motor (13) is connected to one end of a synchronizing rod (14). The other end of the synchronizing rod (14) passes through the gearbox bracket (12) and is connected to one end of a gearbox (15) inside the gearbox bracket (12). The other end of the gearbox (15) is provided with a first rotating shaft (16). One end of the first rotating shaft (16) is fixedly connected to a first frame connecting bracket (17). The other end of the first rotating shaft (16) passes through a first pull wire wheel (18), the side wall of the gearbox bracket (12), the gearbox (15), and the other side wall of the gearbox bracket (12), and is then limited and fixed by a first nut (19). The first pull wire wheel (18) is engaged with the gearbox bracket (12).
2. The automobile seat flipping mechanism according to claim 1, characterized in that: The gearbox (15) includes a housing (151) and a gear set (152) disposed inside the housing (151). The gear set (152) includes an input gear (1521), at least one transmission gear (1522), and an output gear (1523). The synchronizing rod (14) passes through the housing (151) and the input gear (1521) and is connected to one end of the gearbox (15). The input gear (1521) meshes with the transmission gear (1522), and the transmission gear (1522) meshes with the output gear (1523). The first rotating shaft (16) passes through the housing (151) and the output gear (1523) and is connected to the other end of the gearbox (15).
3. The automobile seat flipping mechanism according to claim 2, characterized in that: Each gear in the gearbox (15) is provided with a first self-lubricating bushing (153) at the connection between the gear and the housing (151).
4. The automobile seat flipping mechanism according to claim 1, characterized in that: A second self-lubricating bushing (20) is provided at the connection point between the end of the first rotating shaft (16) away from the first skeleton connecting bracket (17) and the gearbox bracket (12).
5. The automobile seat flipping mechanism according to claim 1, characterized in that: The gearbox bracket (12) has at least one first claw (121) on its side wall relative to the first pull wire wheel (18), and the first pull wire wheel (18) has at least one first slot (181) relative to the first claw (121). The first pull wire wheel (18) is engaged with the gearbox bracket (12) through the mutual cooperation of the first slot (181) and the first claw (121).
6. The automobile seat flipping mechanism according to claim 1, characterized in that: It also includes an auxiliary flipping mechanism (2), which includes a second frame connecting bracket (21) connected to the seat frame. The second frame connecting bracket (21) is fixed to one end of the second rotating shaft (22). The other end of the second rotating shaft (22) passes through the second pull cable wheel (23), the connecting side wall (242) of the spring fixing bracket (24) on one side, the first spring (25), the spring limiting cover (26), the second spring (27), and the connecting side wall (242) of the spring fixing bracket (24) on the other side, and is then fixed by the second nut (29). The second pull cable wheel (23) and the connecting side wall (242) of the spring fixing bracket (24) are connected by the second pull cable wheel (23) and the connecting side wall (242) of the spring fixing bracket (24). The spring fixing bracket (24) is connected to the side walls (242) on both sides by two oppositely installed first springs (25) and second springs (27). The first arm (251) on the two springs is engaged with the second claw (245) on the top of the spring fixing bracket (24). The second arm (252) on the two springs abuts against the second rotating shaft (22). A spring limiting cover (26) is provided between the two springs. The spring limiting cover (26) is engaged with the spring fixing bracket (24). The spring fixing bracket (24) is fixed to the second bracket (28). The auxiliary flipping mechanism (2) is connected to the vehicle body through the second bracket (28).
7. The automobile seat flipping mechanism according to claim 6, characterized in that: The spring fixing bracket (24) has at least one third claw (244) on the connecting side wall (242) on the side opposite to the second pull wire wheel (23). The second pull wire wheel (23) has at least one second slot (231) at the position opposite to the third claw (244). The second pull wire wheel (23) is engaged with the spring fixing bracket (24) through the mutual cooperation of the second slot (231) and the third claw (244).
8. The automobile seat flipping mechanism according to claim 6, characterized in that: The spring fixing bracket (24) includes a fixing bracket body (241). The fixing bracket body (241) has upwardly bent connecting sidewalls (242) on both sides of its lateral direction. The two connecting sidewalls (242) have connecting holes (243) for the second rotating shaft (22) to pass through at their relative positions. The connecting sidewall (242) on the side of the fixing bracket body (241) opposite to the second pull wire wheel (23) is provided with at least one third claw (244). The top of the two connecting sidewalls (242) on both sides is provided with two second claws (245) arranged in opposite directions. The fixing bracket body (241) has locking arms (246) bent inwards on both sides of its longitudinal direction. The locking arms (246) have slots (247) for locking with the spring limiting cover (26).
9. A car seat flipping mechanism according to claim 6, characterized in that: The spring limiting cover (26) includes a cover body (261). The cover body (261) has a first clearance opening (262) at the middle position to avoid the second rotating shaft (22). The cover body (261) has limiting arms extending laterally at both ends. The two limiting arms on the side of the cover body (261) opposite to the first spring (25) are the first limiting arms (263), and the two limiting arms on the side opposite to the second spring (27) are the second limiting arms (264). The first limiting arms (263) and the second limiting arms (264) have the same structure. The top of the two second limiting arms (264) has a clearance second claw (245) and a first support arm (251). The second clearance opening (265) forms a receiving cavity (266) for accommodating the second spring (27) between the two sides below the second clearance opening (265). The spring limiting cover (26) separates the first spring (25) and the second spring (27) on the lateral sides of the cover body (261). The first spring (25) and the second spring (27) are limited by the mutual cooperation of the first limiting arm (263) and the connecting side wall (242) and the mutual cooperation of the second limiting arm (264) and the connecting side wall (242). The outer sides of the first limiting arm (263) and the second limiting arm (264) are equipped with a fourth claw (267) that engages with the spring fixing bracket (24).
10. A car seat flipping mechanism according to claim 6, characterized in that: A third self-lubricating bushing (210) is provided between the second rotating shaft (22) and the connecting hole (243) on the connecting side wall (242).