A zero-gravity seat frame rapid energy-absorbing return device and vehicle

Abstract

The application provides a zero-gravity seat framework quick energy-absorbing return device and a vehicle, and belongs to the technical field of vehicles, and solves the problems of complex structure, complex assembly operation and high cost caused by energy absorption by using a friction disc in the existing return mechanism. Wherein, the angle adjusting motor drives the angle adjuster connecting plate to rotate through the angle adjuster, one end of the angle adjuster connecting plate is fixedly connected with the center shaft, the other end of the center shaft is connected with the hook lock assembly, the center shaft is provided in the reset connecting rod, when the hook lock assembly is in the locked state, the relative position of the center shaft and the reset connecting rod is fixed; when the hook lock is in the unlocked state, the reset connecting rod rotates relative to the center shaft, one end of the front connecting rod is rotatably connected with the reset connecting rod, the other end is rotatably connected with the seat bottom frame structure, the energy-absorbing friction ring is fixedly sleeved on the center shaft and located between the center shaft and the reset connecting rod. Energy can be absorbed while the seat is returning, and the structure is simple and the cost is low.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of vehicles, in particular to a zero-gravity seat framework rapid energy-absorbing return device and a vehicle. BACKGROUND

[0002] In the process of using the zero-gravity seat, the occupant can achieve a more comfortable seat posture by adjusting the seat back to rotate backward and adjusting the seat cushion support to rotate upward at the end close to the occupant's feet, so that the occupant can sit in a lying position in the vehicle. However, due to the large angle between the backrest and the cushion, the occupant is in a lying position, and the adjustment range of the seat belt is limited, so that the restraining force of the seat belt on the body is not enough to completely provide protection to the occupant in the event of an emergency, which poses a safety hazard. In order to improve the safety of the occupant, when the vehicle collides, if the seat is in a zero-gravity position, the seat cushion is controlled by the seat controller to make the rapid energy-absorbing return mechanism absorb energy and quickly return to the standard position, and the cushion airbag and safety belt are detonated and tightened. In the prior art, the patent application with the authorization announcement number CN117429327B discloses a zero-gravity seat with a rapid return mechanism and a rapid return method thereof, wherein a friction disc is used for energy absorption. However, the friction disc not only has a complex structure, is heavy, and occupies a large space, but also uses a laser welding structure, which requires the shaft and the friction disc to be welded into an assembly first, which affects the subsequent welding sequence, and two connecting plates are required for layered welding, resulting in complex assembly operation, time-consuming and laborious, and high cost. SUMMARY

[0003] Therefore, in order to solve the problem that the return mechanism in the prior art uses a friction disc for energy absorption, but the friction disc not only has a complex structure, is heavy, and occupies a large space, but also causes complex assembly operation, time-consuming and laborious, and high cost, the present application proposes a zero-gravity seat framework rapid energy-absorbing return device and a vehicle.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0005] The zero-gravity seat framework quick energy-absorbing reset device comprises a bottom support structure, a seat bottom frame structure, an angle adjusting motor and an angle adjusting assembly, the angle adjusting assembly comprises an angle adjuster, an angle adjuster connecting plate, a reset connecting rod, a center shaft, a front connecting rod, a hook lock assembly and an energy-absorbing friction ring, the angle adjusting motor is fixedly arranged on the bottom support structure, the angle adjuster drives the angle adjuster connecting plate to rotate through the angle adjuster, one end of the angle adjuster connecting plate is fixedly connected with the center shaft, the other end of the center shaft is connected with the hook lock assembly, the center shaft is arranged through the reset connecting rod, the hook lock assembly has a locking state and an unlocking state, when the hook lock assembly is in the locking state, the relative position between the center shaft and the reset connecting rod is fixed, when the hook lock is in the unlocking state, the reset connecting rod can rotate relative to the center shaft, one end of the front connecting rod is rotatably connected with the reset connecting rod, the other end is rotatably connected with one end of the seat bottom frame structure, the other end of the seat bottom frame structure is rotatably arranged on the bottom support structure, and the energy-absorbing friction ring is fixedly arranged on the center shaft and located between the center shaft and the reset connecting rod.

[0006] As a preferred scheme of the zero-gravity seat framework quick energy-absorbing reset device, a plurality of protrusions are uniformly arranged on the outer wall of the energy-absorbing friction ring.

[0007] As a preferred scheme of the zero-gravity seat framework quick energy-absorbing reset device, the cross section of the protrusion is arc-shaped.

[0008] As a preferred scheme of the zero-gravity seat framework quick energy-absorbing reset device, the energy-absorbing friction ring is in interference fit with the reset connecting rod.

[0009] As a preferred scheme of the zero-gravity seat framework quick energy-absorbing reset device, the outer wall of the center shaft is provided with a mounting groove, the energy-absorbing friction ring is fixedly arranged in the mounting groove, and the two ends of the energy-absorbing friction ring are respectively abutted against the two inner walls of the mounting groove.

[0010] As a preferred scheme of the zero-gravity seat framework quick energy-absorbing reset device, the hook lock assembly comprises a point detonator, a brake wire, a cam, a hook lock and a tooth plate, the tooth plate is fixedly connected with the center shaft, the hook lock is rotatably connected with the reset connecting rod, one end of the cam is rotatably arranged on the reset connecting rod and has a first position and a second position, the point detonator is connected with the other end of the cam through the brake wire, when the cam is located at the first position, the first abutting portion of the hook lock is abutted against the cam to make the hook lock mesh with the tooth plate, and when the cam is located at the second position, the second abutting portion of the hook lock is abutted against the cam to make the hook lock separate from the tooth plate.

[0011] As a preferred scheme of the zero-gravity seat framework quick energy-absorbing reset device, the hook lock assembly further comprises a cover, the cover is connected with the reset connecting rod through a bolt, the cam is located in the cover, a sliding column is fixedly arranged on the cam, the cover is provided with a guide sliding groove, and the sliding column is slidably arranged in the guide sliding groove.

[0012] As a preferred scheme of the zero-gravity seat framework quick energy-absorbing reset device, the zero-gravity seat framework quick energy-absorbing reset device further comprises a synchronous rod, the number of the angle adjusting assemblies is two, and the angle adjuster in each of the two angle adjusting assemblies is fixedly connected to the two ends of the synchronous rod.

[0013] The application further provides a vehicle comprising the zero-gravity seat framework quick energy-absorbing reset device.

[0014] As a preferred scheme of the vehicle, the vehicle further comprises a seat backrest support and a backrest angle adjusting structure, the seat backrest support is rotationally connected to the seat bottom frame structure, and the backrest angle adjusting structure is used for adjusting the included angle between the seat backrest support and the seat bottom frame structure.

[0015] Compared with the prior art, the zero-gravity seat framework quick energy-absorbing reset device and the vehicle have the following beneficial effects:

[0016] (1) Light weight: the energy-absorbing friction ring has a simple structure and a greatly reduced weight.

[0017] (2) Beneficial to space optimization: the energy-absorbing friction ring has a very small size and occupies a small space, so more available space can be left.

[0018] (3) Assembly process optimization: the angle adjuster connecting plate is welded to the center shaft, then the angle adjuster is welded to the angle adjuster connecting plate, the energy-absorbing friction ring is assembled to the center shaft first, and then the energy-absorbing friction ring and the center shaft are embedded into the reset connecting rod, so that the assembly is simpler and faster, and time and labor are saved.

[0019] (4) Low cost. DETAILED DESCRIPTION

[0020] The accompanying drawings, which form a part of the present application, are used to provide further understanding of the present application, and the illustrative embodiments of the present application and their descriptions are used to explain the present application, and do not constitute improper limitations on the present application. In the drawings:

[0021] Figure 1 is a schematic view of an energy-absorbing friction ring, a center shaft, a reset connecting rod, a toothed plate and an angle adjuster connecting plate of the zero-gravity seat framework quick energy-absorbing reset device provided by the specific embodiment of the present application;

[0022] Figure 2 is a structural schematic view of the zero-gravity seat framework quick energy-absorbing reset device provided by the specific embodiment of the present application;

[0023] Figure 3 is an exploded view of part of the structure of the zero-gravity seat framework quick energy-absorbing reset device provided by the specific embodiment of the present application;

[0024] Figure 4 is a structural schematic view of a hook lock assembly of a zero-gravity seat framework quick energy-absorbing reset device provided by specific embodiments of the present application;

[0025] Figure 5 is an exploded view of a hook lock assembly of a zero-gravity seat framework quick energy-absorbing reset device provided by specific embodiments of the present application;

[0026] Figure 6 is an assembly view of a zero-gravity seat framework quick energy-absorbing reset device and a seat back support provided by specific embodiments of the present application.

[0027] In the figure:

[0028] 1, bottom support structure;

[0029] 2, seat bottom frame structure;

[0030] 3, angle adjusting motor;

[0031] 4, angle adjusting assembly; 41, angle adjuster; 42, angle adjuster connecting plate; 43, reset connecting rod; 44, center shaft; 45, front connecting rod; 46, hook lock assembly; 47, energy-absorbing friction ring; 461, detonator; 462, brake wire; 463, cam; 464, hook lock; 465, toothed plate; 466, cover; 4631, sliding column;

[0032] 5, synchronization rod;

[0033] 6, seat back support. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other, and the described embodiments are only part of the embodiments of the present application, not all the embodiments.

[0035] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or integrated; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, can be the internal connection of two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature is "on", "above" and "over" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. The first feature is "under", "below" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0037] In the description of the present embodiment, the terms "upper", "lower", "right", and the like orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only used to distinguish in description, and have no special meaning.

[0038] Referring to Figures 1-6 To illustrate the present embodiment, the present application provides a zero-gravity seat framework rapid energy-absorbing return device, which comprises a bottom support structure 1, a seat bottom frame structure 2, an angle adjusting motor 3 and an angle adjusting assembly 4, the angle adjusting assembly 4 comprises an angle adjuster 41, an angle adjuster connecting plate 42, a reset connecting rod 43, a center shaft 44, a front connecting rod 45, a hook lock assembly 46 and an energy-absorbing friction ring 47, the angle adjusting motor 3 is fixedly arranged on the bottom support structure 1, the angle adjusting motor 3 drives the angle adjuster connecting plate 42 to rotate through the angle adjuster 41, the angle adjuster connecting plate 42 is fixedly connected with one end of the center shaft 44, the other end of the center shaft 44 is connected with the hook lock assembly 46, the center shaft 44 is arranged through the reset connecting rod 43, the hook lock assembly 46 has a locking state and an unlocking state, when the hook lock assembly 46 is in the locking state, the relative position of the center shaft 44 and the reset connecting rod 43 is fixed; when the hook lock assembly 46 is in the unlocking state, the reset connecting rod 43 can rotate relative to the center shaft 44, one end of the front connecting rod 45 is rotatably connected with the reset connecting rod 43, the other end is rotatably connected with one end of the seat bottom frame structure 2, the other end of the seat bottom frame structure 2 is rotatably arranged on the bottom support structure 1; the energy-absorbing friction ring 47 is fixedly sleeved on the center shaft 44 and located between the center shaft 44 and the reset connecting rod 43.

[0039] The seat bottom frame structure 2 is used for supporting the seat cushion. When it is needed to adjust the seat from the normal sitting position to the zero-gravity lying position, the angle adjusting motor 3 drives the angle adjuster 41 to rotate the angle adjuster connecting plate 42, at this time, the hook lock assembly 46 is in the locking state, the relative position of the center shaft 44 and the reset connecting rod 43 is locked, the angle adjuster connecting plate 42 drives the reset connecting rod 43 to rotate through the center shaft 44, the reset connecting rod 43 drives the front connecting rod 45 to rotate, and the front connecting rod 45 drives the seat bottom frame structure 2 to rotate, so as to realize the rotation of the end of the seat cushion close to the feet of the occupant upward. When the vehicle is subjected to a collision, it is needed to reset the seat from the zero-gravity lying position to the normal sitting position, that is, it is needed to rotate the end of the seat cushion close to the feet of the occupant downward. At this time, the hook lock assembly 46 is in the unlocking state, the reset connecting rod 43 can rotate relative to the center shaft 44, and the end of the seat bottom frame structure 2 close to the feet of the occupant rotates downward under the action of the gravity of the occupant and the front impact force of the vehicle. The reset connecting rod 43 rotates relative to the center shaft 44 through the front connecting rod 45, at this time, the energy absorption friction ring 47 between the reset connecting rod 43 and the center shaft 44 plays the role of energy absorption, part of the collision energy is absorbed during the resetting of the seat, the impact inertia on the occupant is reduced, and the passive safety device of the vehicle can perfectly play the role.

[0040] Compared with the friction disc for energy absorption in the prior art, the energy absorption friction ring 47 is adopted for energy absorption, light weight can be realized, the structure of the energy absorption friction ring 47 is simple, and the weight is greatly reduced. The energy absorption friction ring 47 is beneficial to space optimization, the size of the energy absorption friction ring 47 is very small, the space occupied is small, and more available space can be left. The assembly process is optimized, the angle adjuster connecting plate 42 is welded with the center shaft 44, then the angle adjuster 41 is welded with the angle adjuster connecting plate 42, the energy absorption friction ring 47 is assembled with the center shaft 44 first, and then embedded in the reset connecting rod 43, so that the assembly is simpler and faster, time and labor are saved, and the cost is low.

[0041] Optionally, a plurality of protrusions are uniformly arranged on the outer wall of the energy absorption friction ring 47.

[0042] In the embodiment, the cross section of the protrusion is circular arc. The plurality of protrusions are divided into two rows along the axial direction of the energy absorption friction ring 47, and the protrusions in each row are uniformly arranged along the circumferential direction of the energy absorption friction ring 47.

[0043] Optionally, the energy absorption friction ring 47 is in interference fit with the reset connecting rod 43.

[0044] Optionally, the outer wall of the center shaft 44 is provided with a mounting groove, the energy absorption friction ring 47 is fixedly embedded in the mounting groove, and the two ends of the energy absorption friction ring 47 abut against the two inner walls of the mounting groove. The mounting groove can limit the position of the energy absorption friction ring 47.

[0045] AsFigure 4 and Figure 5 As shown in

[0046] When the hook lock assembly 46 needs to be unlocked, the detonator 461 works, drives the cam 463 to rotate from the first position to the second position through the gate line 462, and the cam 463 abuts the second abutting part to drive the hook lock 464 to rotate, so that the hook lock 464 is separated from the tooth plate 465, and the relative position of the reset connecting rod 43 and the center shaft 44 is unlocked at this time.

[0047] As shown in Figure 5 Optionally, the hook lock assembly 46 further comprises a cover 466, the cover 466 is connected with the reset connecting rod 43 through bolts, the cam 463 is located in the cover 466, a sliding column 4631 is fixedly arranged on the cam 463, and the cover 466 is provided with a guide sliding groove, and the sliding column 4631 is slidably arranged in the guide sliding groove. The guide sliding groove can guide and limit the rotation of the cam 463.

[0048] Optionally, the zero-gravity seat framework rapid energy-absorbing reset device further comprises a synchronous rod 5, the number of the angle adjusting assemblies 4 is two, the synchronous rod 5 is fixedly connected with the angle adjusters 41 in the two angle adjusting assemblies 4 at two ends, and the two angle adjusting assemblies 4 are located at two sides of the seat bottom frame structure 2. The synchronous rod 5 can drive the angle adjusters 41 in the two angle adjusting assemblies 4 located at the two sides of the seat bottom frame structure 2 to be driven by the angle adjusting motor 3.

[0049] The application further provides a vehicle comprising the zero-gravity seat framework rapid energy-absorbing reset device.

[0050] As shown in Figure 6 The vehicle further comprises a seat backrest support 6 and a backrest angle adjusting structure, the seat backrest support 6 is rotatably connected with the seat bottom frame structure 2, and the backrest angle adjusting structure is used for adjusting the included angle between the seat backrest support 6 and the seat bottom frame structure 2.

[0051] When the vehicle collides, the current seat posture is confirmed by the seat controller; when the seat controller detects that the seat is in the standard posture, the zero-gravity seat frame rapid energy-absorbing reset device is not started, ensuring the torque strength of the zero-gravity seat frame rapid energy-absorbing reset device; when the seat controller detects that the seat is in the zero-gravity posture, the seat controller controls the zero-gravity seat frame rapid energy-absorbing reset device to start, absorb energy and quickly reset to the standard posture, and the seat cushion air bag and safety belt are detonated and tightened.

[0052] The zero-gravity seat frame rapid energy-absorbing reset device starts, detonates the detonator 461, and the detonator 461 pulls the cam 463 to rotate through the gate line 462. After the cam 463 rotates, it hits the second abutting portion of the hook lock 464, drives the hook lock 464 to rotate, and separates the hook lock 464 from the toothed plate 465, realizing unlocking. After unlocking, the reset connecting rod 43 rotates around the center shaft 44. The energy-absorbing friction ring 47 arranged between the reset connecting rod 43 and the center shaft 44 can increase the rotating torque, and the energy-absorbing friction ring 47 can absorb energy during the reset process, reducing the impact of inertia on the occupant.

[0053] Obviously, the above disclosed embodiments of the application are only used to help explain the application. The embodiments do not describe all the details and do not limit the application to the specific embodiments described. According to the content of the specification, many modifications and changes can be made. The specification selects and describes these embodiments in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and utilize the application. It is not necessary and impossible to exhaust all the embodiments.

Claims

1. A quick energy-absorbing return device for a zero-gravity seat frame, characterized in that, The utility model relates to a seat angle adjustment device, including: Bottom support structure (1), seat bottom frame structure (2), angle adjusting motor (3) and angle adjustment assembly (4), angle adjustment assembly (4) includes angle adjuster (41), angle adjuster connecting plate (42), reset connecting rod (43), center shaft (44), front connecting rod (45), hook lock assembly (46) and energy absorption friction ring (47), angle adjusting motor (3) is fixedly arranged in bottom support structure (1), angle adjusting motor (3) drives angle adjuster (41) to rotate through angle adjuster connecting plate (42), angle adjuster connecting plate (42) is fixedly connected with one end of center shaft (44), the other end of center shaft (44) is connected with hook lock assembly (46), center shaft (44) is arranged in reset connecting rod (43), hook lock assembly (46) has locking state and unlocking state, when hook lock assembly (46) is in locking state, the relative position of center shaft (44) and reset connecting rod (43) is fixed;When hook lock (464) is in unlocking state, reset connecting rod (43) can rotate relative to center shaft (44), one end of front connecting rod (45) is rotatably connected with reset connecting rod (43), and the other end is rotatably connected with one end of seat bottom frame structure (2), and the other end of seat bottom frame structure (2) is rotatably arranged in bottom support structure (1);Energy absorption friction ring (47) is fixedly sleeved on center shaft (44) and is located between center shaft (44) and reset connecting rod (43); The hook lock assembly (46) includes a detonator (461), a brake wire (462), a cam (463), a hook lock (464), and a toothed plate (465). The toothed plate (465) is fixedly connected with the center shaft (44), the hook lock (464) is rotatably connected with the reset connecting rod (43), one end of the cam (463) is rotatably arranged in the reset connecting rod (43) and has a first position and a second position, the detonator (461) is connected with the other end of the cam (463) through the brake wire (462), when the cam (463) is located at the first position, the cam (463) abuts against the first abutting portion of the hook lock (464) to make the hook lock (464) mesh with the toothed plate (465); when the cam (463) is located at the second position, the cam (463) abuts against the second abutting portion of the hook lock (464) to make the hook lock (464) separate from the toothed plate (465).

2. The quick energy absorbing return device for a zero gravity seat framework according to claim 1, wherein: A plurality of protrusions are uniformly distributed on the outer wall of the energy absorption friction ring (47).

3. The quick energy absorbing return device of the zero gravity seat framework according to claim 2, characterized in that: The cross section of the protrusion is circular arc shaped.

4. The quick energy absorbing return device for a zero gravity seat framework according to claim 1, wherein: The energy absorption friction ring (47) is in interference fit with the reset connecting rod (43).

5. The quick energy absorbing return device for a zero gravity seat framework according to claim 1, wherein: The outer wall of the center shaft (44) is provided with a mounting groove, and the energy absorption friction ring (47) is fixedly embedded in the mounting groove. The two ends of the energy absorption friction ring (47) abut against the two inner walls of the mounting groove, respectively.

6. The quick energy absorbing return device for a zero gravity seat framework according to claim 1, wherein: The hook lock assembly (46) further includes a cover (466), the cover (466) is connected with the reset connecting rod (43) through bolts, the cam (463) is located in the cover (466), a sliding column (4631) is fixedly arranged on the cam (463), the cover (466) is provided with a guide sliding groove, and the sliding column (4631) is slidably arranged in the guide sliding groove.

7. The quick energy absorbing return device for a zero gravity seat framework according to claim 1, wherein: The number of the angle adjusting assemblies (4) is two, and the angle adjuster (41) of each angle adjusting assembly (4) is fixedly connected with one end of the synchronous rod (5), and the two angle adjusting assemblies (4) are respectively arranged on the two sides of the seat bottom frame structure (2).

8. A vehicle characterized by: The zero-gravity seat framework rapid energy-absorbing return device comprises the zero-gravity seat framework rapid energy-absorbing return device and the zero-gravity seat framework.

9. The vehicle of claim 8, characterized in that: The vehicle further comprises a seat backrest support (6) and a backrest angle adjusting structure, the seat backrest support (6) is rotationally connected with the seat bottom frame structure (2), and the backrest angle adjusting structure is used for adjusting the included angle between the seat backrest support (6) and the seat bottom frame structure (2).

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