Seat collision recovery energy absorption mechanism and seat

Abstract

The utility model provides a seat collision recovery energy-absorbing mechanism and a seat. The seat collision recovery energy-absorbing mechanism comprises a recovery energy-absorbing mechanism, a fixed plate and a movable plate, the moving plate is rotatably connected with the fixed plate, and the moving plate is connected with the lead screw motor; the return energy absorption mechanism comprises a lock hole, a spring bolt matched with the lock hole, an energy absorption groove, an energy absorption piece and an energy absorption bolt penetrating through the energy absorption groove and the energy absorption piece, a through hole is formed in the energy absorption piece, under the locking state that the spring bolt is inserted into the lock hole, the movable plate is fixed relative to the fixed plate, and the energy absorption bolt penetrates through the through hole to be connected with the energy absorption piece; in the unlocking state that the lock tongue is separated from the lock hole, the moving plate rotates or slides relative to the fixed plate, and the energy absorption bolt is separated from the through hole and then moves relative to the energy absorption groove to absorb energy. The utility model relates to the technical field of automobile seats, and can solve the problems that a return mechanism in the prior art is not suitable for an automobile seat controlled by a lead screw motor and the return angle of the seat is small.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat technology, specifically to a seat collision recovery energy absorption mechanism and a seat. Background Technology

[0002] When the backrest of a car seat is tilted back at a large angle, the risk of injury to the occupants in the event of a collision is much greater than when the backrest is tilted at a small angle. This can be mitigated by installing a return mechanism on the existing seats so that the front seats can quickly rotate forward and reset during a collision.

[0003] Chinese invention patent application CN117246203A discloses a zero-gravity seat collapse mechanism, which restores the seat to its original position through the energy-absorbing fracture of a collapse plate. Chinese utility model patent CN217074116U discloses a rapid reset structure for a zero-gravity car seat, a car seat, and a vehicle; this rapid reset structure restores the seat to its original position through the fracture of a collapse bolt. Chinese utility model patent CN217074119U discloses a rapid reset structure for a zero-gravity seat, which also restores the seat to its original position through the fracture of a collapse bolt.

[0004] Existing return mechanisms are mostly used in car seats with hinges or adjustable mechanisms. For car seats controlled by lead screw motors, these return mechanisms cannot be used. Additionally, as shown in the attached... Figure 1 As shown, among which, appendix Figure 1 (a) is a schematic diagram showing the reclining angles of the seat cushion and backrest before the seat returns to its original position. Figure 1 (b) is a diagram showing the reclining angles of the seat cushion and backrest after the seat has returned to its original position. Figure 1 It is known that the existing return mechanism can only provide a small return angle for the seat.

[0005] Therefore, there is a need to provide a seat collision recovery energy absorption mechanism and a seat that can solve the problems that the existing return mechanism is not suitable for car seats controlled by a lead screw motor and that the return angle of the seat is small. Utility Model Content

[0006] In view of the above, this utility model provides a seat collision recovery energy absorption mechanism and a seat, which can solve the problems that the existing return mechanism is not suitable for car seats controlled by a lead screw motor and that the return angle of the seat is small.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a seat collision recovery energy absorption mechanism, including a recovery energy absorption mechanism, a fixed plate, and a moving plate; the moving plate is rotatably or slidably connected to the fixed plate, and the moving plate is connected to a lead screw motor; the recovery energy absorption mechanism includes a lock hole, a lock tongue that cooperates with the lock hole, an energy absorption groove, an energy absorption plate, and an energy absorption bolt passing through the energy absorption groove and the energy absorption plate, and a through hole is formed on the energy absorption plate. In the locked state where the lock tongue is inserted into the lock hole, the moving plate is fixed relative to the fixed plate, and the energy absorption bolt passes through the through hole and connects to the energy absorption plate; in the unlocked state where the lock tongue is disengaged from the lock hole, the moving plate rotates or slides relative to the fixed plate, and the energy absorption bolt disengages from the through hole and then undergoes relative displacement with the energy absorption groove to absorb energy.

[0008] In this embodiment of the invention, the energy-absorbing groove is formed on one of the moving plate and the fixed plate, and the locking hole is formed on the other of the moving plate and the fixed plate.

[0009] In this embodiment of the invention, the energy-absorbing groove is formed on one of the moving plate and the fixed plate, and the energy-absorbing bolt is installed on the other of the moving plate and the fixed plate.

[0010] In this embodiment of the invention, the energy-absorbing groove is formed on the energy-absorbing sheet, and the energy-absorbing groove on the energy-absorbing sheet is located next to the through hole.

[0011] In this embodiment of the present invention, an energy-absorbing groove is formed on one of the moving plate and the fixed plate, as well as on the energy-absorbing sheet, and the energy-absorbing groove on the energy-absorbing sheet is located next to the through hole.

[0012] In this embodiment of the invention, at least one weakened portion is provided around the through hole of the energy-absorbing sheet so that when the moving plate rotates or slides relative to the fixed plate, the weakened portion of the energy-absorbing sheet breaks, causing the energy-absorbing bolt to come out of the through hole and thus detach from the energy-absorbing sheet.

[0013] In this embodiment of the utility model, the energy-absorbing sheet includes a first part and a second part. A through hole is formed on the first part. When the moving plate is fixed relative to the fixed plate, the energy-absorbing bolt passes through the through hole and is connected to the first part. When the moving plate rotates or slides relative to the fixed plate, the first part and the second part are disengaged from each other under the action of the relative displacement of the energy-absorbing bolt and the energy-absorbing groove.

[0014] In this embodiment of the utility model, at least one connecting rib is provided between the second part and the first part. The connecting rib is designed to be broken when the moving plate rotates or slides relative to the fixed plate, so that the first part and the second part are separated.

[0015] In this embodiment of the utility model, the energy-absorbing groove includes an empty stroke section and an energy-absorbing section. In the locked state, the energy-absorbing groove includes an empty stroke section and an energy-absorbing section. In the locked state, the energy-absorbing bolt is located in the empty stroke section of the energy-absorbing groove. When the moving plate rotates or slides relative to the fixed plate, the energy-absorbing bolt enters the energy-absorbing section from the empty stroke section.

[0016] In this embodiment of the invention, the energy-absorbing section includes several spaced-apart energy-absorbing tension ribs. When the moving plate rotates or slides relative to the fixed plate, the energy-absorbing tension ribs are broken by the energy-absorbing bolts, thereby absorbing energy.

[0017] A seat includes a seat impact recovery energy absorption mechanism, a base, and a seat cushion frame assembly connected to the base via a two-bar linkage; the front end of a lead screw motor is rotatably connected to the two-bar linkage, and the rear end of the lead screw motor is rotatably connected to a movable bracket, which is rotatably mounted on the base. The base serves as a fixed plate for the seat impact recovery energy absorption mechanism, and the movable bracket serves as a moving plate for the seat impact recovery energy absorption mechanism; a locking hole is formed on one of the base and the movable bracket, and an energy-absorbing groove is formed on the other of the base and the movable bracket, and / or on an energy-absorbing sheet.

[0018] A seat includes a seat impact recovery energy absorption mechanism, a base, and a seat cushion frame assembly connected to the base via a two-bar linkage; the front end of a lead screw motor is rotatably connected to the two-bar linkage, and the rear end of the lead screw motor is rotatably connected to a movable bracket, the movable bracket being slidably mounted on the base, the base serving as a fixed plate for the seat impact recovery energy absorption mechanism, and the movable bracket serving as a moving plate for the seat impact recovery energy absorption mechanism; a locking hole is formed on one of the base and the movable bracket, and an energy absorption groove is formed on the other of the base and the movable bracket, and / or on an energy absorption sheet.

[0019] Because of the adoption of the above technical solution, this utility model has the following beneficial effects:

[0020] (1) The seat collision recovery energy absorption mechanism of this utility model locks the fixed plate and the moving plate through the locking tongue and locking hole of the unlocking part under normal working conditions, ensuring the static strength of the seat, while the energy-absorbing sheet ensures the rigidity and stability of the seat. When a vehicle collision occurs, the locking tongue of the unlocking part disengages from the fixed plate and the moving plate, allowing the moving plate to rotate or slide relative to the fixed plate. Energy is absorbed through the energy-absorbing bolts causing the energy-absorbing sheet to break and the energy-absorbing groove to be squeezed, ensuring rapid return and energy absorption during the collision.

[0021] (2) The seat of this utility model is provided with the aforementioned seat collision recovery energy absorption mechanism, wherein the base is a fixed plate and the movable bracket rotatably mounted on the base is a moving plate. Since the movable bracket is connected to the two connecting rods through a screw motor, and the two connecting rods are rotatably connected to the side plate of the seat cushion, when the vehicle collides, the locking tongue disengages from the fixed plate and the moving plate, and the movable bracket rotates relative to the base, thereby pulling the two connecting rods through the screw motor, so that the side plate of the seat cushion is reset. During the rotation of the movable bracket, the energy absorption bolt is driven to break the energy absorption sheet and the energy absorption groove is squeezed, which ensures the rapid return and energy absorption of the side plate of the seat cushion when the vehicle collides, which is suitable for the needs of various seats with high block value.

[0022] (3) The seat of this utility model is provided with the aforementioned seat collision recovery energy absorption mechanism, wherein the base is a fixed plate and the movable bracket that can be slidably installed on the base is a moving plate. Since the movable bracket is connected to the two connecting rods through the screw motor, and the two connecting rods are rotatably connected to the side plate of the seat cushion, when the vehicle collides, the locking tongue disengages from the fixed plate and the moving plate, and the movable bracket slides relative to the base, thereby pulling the two connecting rods through the screw motor, so that the side plate of the seat cushion is reset. During the sliding process of the movable bracket, the energy absorption bolt is driven to break the energy absorption sheet and the energy absorption groove is squeezed, which ensures the rapid return and energy absorption of the side plate of the seat cushion when the vehicle collides, which is suitable for the needs of seats with low block value. Attached Figure Description

[0023] Figure 1 This is a schematic diagram illustrating the change in the return angle of a car seat in existing technology;

[0024] Figure 2 This is a perspective view of the seat collision recovery energy absorption mechanism of this utility model in the locked state, wherein the moving plate and the fixed plate are slidably connected;

[0025] Figure 3 This is a perspective view of the seat collision recovery energy absorption mechanism of this utility model in the unlocked state, wherein the moving plate and the fixed plate are slidably connected;

[0026] Figure 4 yes Figure 2 Exploded view;

[0027] Figure 5 yes Figure 2 A sectional view (unlocked);

[0028] Figure 6 yes Figure 2 The sectional view (unlocked);

[0029] Figure 7 This is a perspective view of the seat collision recovery energy absorption mechanism of this utility model in the locked state, wherein the moving plate and the fixed plate are rotatably connected;

[0030] Figure 8This is a perspective view of the seat collision recovery energy absorption mechanism of this utility model in the unlocked state, wherein the moving plate and the fixed plate are rotatably connected;

[0031] Figure 9 yes Figure 7 Exploded view;

[0032] Figure 10 This is a partial exploded view of the seat of this utility model (Example 1);

[0033] Figure 11 This is a partial front view of the seat of this utility model (Example 1);

[0034] Figure 12 This is a partial schematic diagram of the back of the seat of this utility model (Example 1);

[0035] Figure 13 This is a schematic diagram of the recovery principle of the seat of this utility model (Example 1);

[0036] Figure 14 This is a diagram illustrating the movement process of the seat of this utility model (Example 1);

[0037] Figure 15 This is a cross-sectional view of the seat of this utility model in the locked state (Example 1);

[0038] Figure 16 This is a diagram showing the locked state of the first energy-absorbing bracket in the seat of this utility model (Example 1);

[0039] Figure 17 This is a cross-sectional view of the seat of this utility model in the unlocked state (Example 1);

[0040] Figure 18 This is a diagram showing the unlocked state of the first energy-absorbing bracket in the seat of this utility model (Example 1);

[0041] Figure 19 This is a schematic diagram of the first structure of the movable support in the seat of this utility model (Example 1);

[0042] Figure 20 This is a schematic diagram of the second structure of the movable support in the seat of this utility model (Example 1);

[0043] Figure 21 This is an exploded view of the seat of this utility model (Example 2);

[0044] Figure 22 This is a partial front view of the seat of this utility model (Embodiment 2);

[0045] Figure 23 This is a partial schematic diagram of the back of the seat of this utility model (Example 2);

[0046] Figure 24 This is a schematic diagram of the recovery principle of the seat of this utility model (Example 2);

[0047] Figure 25 This is a diagram illustrating the movement process of the seat of this utility model (Example 2);

[0048] Figure 26 This is a cross-sectional view of the seat of this utility model in the locked state (Example 2);

[0049] Figure 27 This is a rear view of the seat in the locked state of this utility model (Example 2);

[0050] Figure 28 This is a cross-sectional view of the seat of this utility model in the unlocked state (Example 2);

[0051] Figure 29 This is a rear view of the seat of this utility model in the unlocked state (Example 2);

[0052] Figure 30 This is a schematic diagram of the first structure of the movable support in the seat of this utility model (Example 2);

[0053] Figure 31 This is a front view of the first structural design of the movable support in the seat of this utility model (Embodiment 2);

[0054] Figure 32 This is a front view of the second structural design of the movable support in the seat of this utility model (Embodiment 2);

[0055] Figure 33(a) is a front view of the energy-absorbing sheet including the first part and the second part in the seat collision recovery energy absorption mechanism of this utility model;

[0056] Figure 33(b) is a front view of the energy-absorbing sheet including a wider weakening portion in the seat collision recovery energy absorption mechanism of this utility model;

[0057] Figure 33(c) is a front view of the energy-absorbing sheet including a narrow weakening portion in the seat collision recovery energy absorption mechanism of this utility model;

[0058] Figure 33(d) is a front view of an energy-absorbing sheet including an energy-absorbing groove and a through hole in the seat collision recovery energy-absorbing mechanism of this utility model;

[0059] Figure 33(e) is a front view of another energy-absorbing sheet including an energy-absorbing groove and a through hole in the seat collision recovery energy-absorbing mechanism of this utility model;

[0060] Figure 34 This is an assembly diagram of the seat collision recovery energy absorption mechanism of this utility model (energy absorption grooves are formed on the energy absorption plate).

[0061] The correspondence between the reference numerals and components in the attached drawings is as follows:

[0062] 11 Locking hole, 100 Front connecting rod, 100a Rear connecting rod, 100c Upper connecting rod, 101 Fixing plate, 101a Base, 102 Screw motor, 104 Motion plate, 104a Energy-absorbing groove, 104c Movable bracket, 105 Energy-absorbing bolt, 106 First mounting bolt, 107 Unlocking component, 107a Locking tongue, 108 Second mounting bolt, 109 Connecting plate, 200 Mounting nut, 201 Locking block, 202 Energy-absorbing sheet, 202a First part, 202b Through hole, 202c Connecting rib, 202d Energy-absorbing tensile rib, 202f Second part, 202g Weakening part, 203 Seat front tube, 205 Seat rear tube, 206 Seat side plate, 31a Energy-absorbing tensile rib. Detailed Implementation

[0063] To facilitate understanding of this utility model, the following description is provided in conjunction with the accompanying drawings and embodiments.

[0064] Please see the appendix Figure 2 To be continued Figure 4 and attached Figure 34 A seat collision recovery energy absorption mechanism includes a recovery energy absorption mechanism, a fixed plate 101, and a moving plate 104; the moving plate 104 is slidably connected to the fixed plate 101, and the moving plate 104 is connected to a lead screw motor 102 (not shown in the figure); the recovery energy absorption mechanism includes a locking hole 11, a locking tongue 107a cooperating with the locking hole 11, an energy absorption groove 104a, an energy absorption piece 202 sandwiched between the moving plate 104 and the fixed plate 101, and an energy absorption bolt 105 passing through the energy absorption groove 104a and the energy absorption piece 202, and a through hole 202b is formed on the energy absorption piece 202; see attached figure. Figure 5 To be continued Figure 6 In the locked state where the latch 107a is inserted into the lock hole 11, the moving plate 104 is fixed relative to the fixed plate 101, and the energy-absorbing bolt 105 passes through the through hole 202b and is connected to the energy-absorbing plate 202. In the unlocked state where the latch 107a is dislodged from the lock hole 11, the moving plate 104 slides relative to the fixed plate 101, thereby pulling the lead screw motor 102. The energy-absorbing bolt 105 dislodges from the through hole 202b and then undergoes relative displacement with the energy-absorbing groove 104a to absorb energy.

[0065] An energy-absorbing groove 104a is formed on the fixed plate 101, an energy-absorbing bolt 105 is mounted on the moving plate 104, and an energy-absorbing plate 202 is mounted on the fixed plate 101. The energy-absorbing bolt 105 passes through the energy-absorbing groove 104a and connects with the energy-absorbing plate 202. A lock hole 11 is formed on the moving plate 104, and a lock tongue 107a is installed in the lock housing of the unlocking member 107. The lock tongue 107a can extend and retract relative to the lock housing. The lock housing can be fixedly mounted on the fixed plate 101 by mounting bolts 106 and mounting nuts 200. The locking tongue 107a passes through the energy-absorbing groove 104a and inserts into the locking hole 11, locking the moving plate 104 and preventing it from sliding relative to the fixed plate 101. This satisfies the static strength requirements of the entire seat collision recovery energy absorption mechanism and prevents accidental unlocking during normal vehicle vibration. Simultaneously, the energy-absorbing plate 202, connected to the energy-absorbing bolt 105 through the through hole 202b, ensures the relative fixation of the moving plate 104 and the fixed plate 101, thus guaranteeing the stability of the static strength of the seat collision recovery energy absorption mechanism. When the locking tongue 107a disengages from the locking hole 11 and the energy-absorbing groove 104a, the moving plate 104 and the fixed plate 101 are locked. In the unlocked state, the motion plate 104 slides relative to the fixed plate 101, thereby enabling the rapid recovery function of the seat collision recovery energy absorption mechanism. At the same time, the sliding of the motion plate 104 relative to the fixed plate 101 causes the energy-absorbing bolt 105 on the motion plate 104 to dislodge from the through hole 202b and move along the energy-absorbing groove 104a, causing the energy-absorbing piece 202 connected to the energy-absorbing bolt 105 to break and absorb energy. Since the width of the energy-absorbing groove 104a narrows along the sliding direction of the motion plate 104, the energy-absorbing bolt 105 continuously squeezes the energy-absorbing groove 104a as it moves along the energy-absorbing groove 104a, thereby achieving energy absorption.

[0066] The locking tongue 107a of the unlocking component 107 can be controlled by the vehicle ECU. When the vehicle ECU detects a vehicle collision, it immediately retracts the locking tongue 107a to disengage it from the lock hole 11 and the energy absorption groove 104a, so that the moving plate 104 and the fixed plate 101 can slide relative to each other, ensuring the timeliness and synchronicity of energy recovery. In the normal state where the vehicle ECU does not detect a collision, the locking tongue 107a always extends through the lock hole 11 and the energy absorption groove 104a, so that the relative locking of the moving plate 104 and the fixed plate 101 can be achieved through the locking cooperation between the locking tongue 107a and the lock hole 11.

[0067] Preferably, the shape and size of the lock hole 11 can be determined according to the shape and size of the lock tongue 107a, so that when the lock tongue 107a is inserted into the lock hole 11, it can lock the fixing plate 101 and the moving plate 104 respectively.

[0068] Please refer to Figures 33(a) to 33(e) which illustrate five forms of the energy-absorbing sheet 202. The first form, as shown in Figure 33(a), includes a first portion 202a and a second portion 202f. A through hole 202b is formed in the first portion 202a, and at least one connecting rib 202c is provided between the second portion 202f and the first portion 202a. The number and size of the connecting ribs 202c can be adaptively adjusted according to the actual tensile force threshold. Preferably, two connecting ribs 202c are provided, spaced apart and connected to the first portion 202a and the second portion 202f.

[0069] When the moving plate 104 is fixed relative to the fixed plate 101, the energy-absorbing bolt 105 passes through the through hole 202b and connects to the energy-absorbing plate 202, specifically to the first part 202a. When the moving plate 104 rotates relative to the fixed plate 101, the energy-absorbing bolt 105 is driven by the moving plate 104, and then the first part 202a is driven by the energy-absorbing bolt 105, pulling off the connecting rib 202c, causing the first part 202a to separate from the second part 202f.

[0070] The second and third forms are shown in Figures 33(b) and 33(c). The energy-absorbing plate 202 is provided with a through hole 202b, and at least one weakening part 202g is provided around the through hole 202b. When the moving plate 104 is fixed relative to the fixed plate 101, the energy-absorbing bolt 105 passes through the through hole 202b and is connected to the energy-absorbing plate 202. When the moving plate 104 rotates relative to the fixed plate 101, the energy-absorbing bolt 105 is driven by the moving plate 101, which pulls off the weakening part 202g, so that the energy-absorbing bolt 105 comes out of the through hole 202b and is separated from the energy-absorbing plate 202.

[0071] Preferably, as shown in Figure 33(b), the through hole 202b is located at the edge of the energy-absorbing sheet 202. The narrower portion between the through hole 202b and the edge of the energy-absorbing sheet 202 is used as the weakening portion 202g. Preferably, the weakening portion 202g is positioned in the direction of movement of the energy-absorbing bolt 105. Unlike Figure 33(b), the distance between the through hole 202b and the edge of the first portion 202a in Figure 33(c) is greater than the distance in Figure 33(b). That is, the width of the weakening portion 202g in Figure 33(b) is greater than the width of the weakening portion 202g in Figure 33(c). In order to ensure that the weakening portion 202g can break quickly upon impact, the weakening portion 202g can be set as a pointed notch to reduce the width of the weakening portion 202g.

[0072] The fourth form is shown in Figure 33(d). An energy-absorbing groove 104a is also formed on the energy-absorbing plate 202, and this groove 104a is located beside the through hole 202b. The width of the energy-absorbing groove 104a is set to be smaller than the shaft diameter of the energy-absorbing bolt 105. When the moving plate 104 is fixed relative to the fixed plate 101, the energy-absorbing bolt 105 passes through the through hole 202b and connects to the energy-absorbing plate 202. When the moving plate 104 rotates relative to the fixed plate 101, the energy-absorbing bolt 105 is driven by the moving plate 104, causing the portion of the energy-absorbing plate 202 located between the through hole 202b and the energy-absorbing groove 104a to break. The energy-absorbing bolt 105 then exits the through hole 202b and enters the energy-absorbing groove 104a, moving along the elongated energy-absorbing groove 104a, thereby achieving the energy-absorbing effect using the narrowed energy-absorbing groove 104a.

[0073] Preferably, the portion of the energy-absorbing sheet 202 located between the energy-absorbing groove 104a and the through hole 202b may also be provided with a weakening part 202g, which facilitates rapid breakage of the energy-absorbing sheet 202 when the energy-absorbing bolt 105 compresses it.

[0074] The fifth form is shown in Figure 33(e). An energy-absorbing groove 104a is also formed on the energy-absorbing plate 202, and this groove 104a is located beside the through hole 202b. The energy-absorbing groove 104a includes several energy-absorbing tensile ribs 31a. When the moving plate 104 is fixed relative to the fixed plate 101, the energy-absorbing bolt 105 passes through the through hole 202b and connects to the energy-absorbing plate 202. When the moving plate 104 rotates relative to the fixed plate 101, the energy-absorbing bolt 105 is driven by the moving plate 104, causing the portion of the energy-absorbing plate 202 located between the through hole 202b and the energy-absorbing groove 104a to break. The energy-absorbing bolt 105 then exits the through hole 202b and enters the energy-absorbing groove 104a, thereby destroying the energy-absorbing tensile ribs 31a and achieving the energy-absorbing effect.

[0075] Preferably, the portion of the energy-absorbing sheet 202 located between the energy-absorbing groove 104a and the through hole 202b may also be provided with a weakening part 202g, which facilitates rapid breakage of the energy-absorbing sheet 202 when the energy-absorbing bolt 105 compresses it.

[0076] The structure of the energy-absorbing plate 202 can be selected from any of the five types mentioned above, or other structures capable of energy absorption can be used, depending on actual usage requirements. In addition to being positioned between the fixed plate 101 and the moving plate 104, the energy-absorbing plate 202 can also be positioned on the side of the fixed plate 101 facing away from the moving plate 104.

[0077] The energy-absorbing groove 104a includes an idle stroke section 104d and an energy-absorbing section 104e. In the locked state, the energy-absorbing bolt 105 is located in the idle stroke section 104d of the energy-absorbing groove 104a. When the moving plate 104 rotates or slides relative to the fixed plate 101, the energy-absorbing bolt 105 enters the energy-absorbing section 104e from the idle stroke section 104d and squeezes the energy-absorbing section 104e to absorb energy.

[0078] In a preferred embodiment, two plates that rotate or slide relative to each other in a car seat can be used directly as a fixed plate and a moving plate. For example, a movable bracket that is rotatably or slidably connected to the base can be used as the moving plate. These two plates only need to meet the arrangement requirements of the energy recovery and absorption mechanism. The entire structure requires less installation space, has lower requirements for installation arrangement, and has a wider and more unrestricted range of applications.

[0079] Depending on the different design structures of the car seats and the different collision recovery and energy absorption requirements, the fixed plate 101 and the moving plate 104 can be different. The arrangement of the lock hole 11 and the energy absorption groove 104a can also be adjusted according to the arrangement space, thus giving rise to eight structural forms of the seat collision recovery and energy absorption mechanism.

[0080] As a first preferred structural form of the seat collision recovery energy absorption mechanism, the lock housing is mounted on the fixed plate 101, the lock tongue 107a passes through the energy absorption groove 104a on the fixed plate 101 and is inserted into the lock hole 11 on the moving plate 104, the energy absorption plate 202 is mounted on the fixed plate 101, the energy absorption bolt 105 passes through the energy absorption plate 202 and is mounted on the moving plate 104, and the width of the energy absorption groove 104a narrows along the movement direction of the moving plate 104.

[0081] As a second preferred structural form of the seat collision recovery energy absorption mechanism, the lock housing is mounted on the fixed plate 101, the lock tongue 107a passes through the lock hole 11 on the fixed plate 101 and is inserted into the energy absorption groove 104a on the moving plate 104, the energy absorption plate 202 is mounted on the moving plate 104, the energy absorption bolt 105 passes through the energy absorption plate 202 and is mounted on the fixed plate 101, and the width of the energy absorption groove 104a is widened along the movement direction of the moving plate 104.

[0082] As a third preferred structural form of the seat collision recovery energy absorption mechanism, the lock housing is mounted on the motion plate 104, the lock tongue 107a passes through the energy absorption groove 104a on the motion plate 104 and is inserted into the lock hole 11 on the fixed plate 101, the energy absorption plate 202 is mounted on the motion plate 104, the energy absorption bolt 105 passes through the energy absorption plate 202 and is mounted on the fixed plate 101, and the width of the energy absorption groove 104a is widened along the movement direction of the motion plate 104.

[0083] As a fourth preferred structural form of the seat collision recovery energy absorption mechanism, the lock housing is mounted on the motion plate 104, the lock tongue 107a passes through the lock hole 11 on the motion plate 104 and is inserted into the energy absorption groove 104a on the fixed plate 101, the energy absorption plate 202 is mounted on the fixed plate 101, the energy absorption bolt 105 passes through the energy absorption plate 202 and is mounted on the motion plate 104, and the width of the energy absorption groove 104a narrows along the movement direction of the motion plate 104.

[0084] As a fifth preferred structural form of the seat collision recovery energy absorption mechanism, the fifth preferred structural form differs from the first preferred structural form in that: an energy-absorbing groove is formed on the energy-absorbing plate 202, and the energy-absorbing groove on the energy-absorbing plate 202 is located beside the through hole 202b. As for the energy-absorbing groove 104a on the original fixing plate 101, it no longer serves a function of energy absorption, but only allows the energy-absorbing bolt 105 to pass through the fixing plate 101. It is conceivable that if it is necessary to absorb a larger amount of energy, the energy-absorbing groove 104a on the fixing plate 101 can also be retained.

[0085] As the sixth preferred structural form of the seat collision recovery energy absorption mechanism, the difference between the sixth preferred structural form and the second preferred structural form is that an energy-absorbing groove is formed on the energy-absorbing plate 202, and the energy-absorbing groove on the energy-absorbing plate 202 is located next to the through hole 202b. As for the energy-absorbing groove 104a on the original moving plate 104, it no longer serves a function of energy absorption, but only allows the energy-absorbing bolt 105 to pass through the moving plate 104. It is conceivable that if it is necessary to absorb a larger amount of energy, the energy-absorbing groove 104a on the moving plate 104 can also be retained.

[0086] As the seventh preferred structural form of the seat collision recovery energy absorption mechanism, the difference between the seventh preferred structural form and the third preferred structural form is that an energy-absorbing groove is formed on the energy-absorbing plate 202, and the energy-absorbing groove on the energy-absorbing plate 202 is located next to the through hole 202b. As for the energy-absorbing groove 104a on the original moving plate 104, it no longer serves a function of energy absorption, but only allows the energy-absorbing bolt 105 to pass through the moving plate 104. It is conceivable that if it is necessary to absorb a larger amount of energy, the energy-absorbing groove 104a on the moving plate 104 can also be retained.

[0087] As the eighth preferred structural form of the seat collision recovery energy absorption mechanism, the difference between the eighth preferred structural form and the fourth preferred structural form is that an energy-absorbing groove is formed on the energy-absorbing plate 202, and the energy-absorbing groove on the energy-absorbing plate 202 is located beside the through hole 202b. As for the energy-absorbing groove 104a on the original fixing plate 101, it no longer serves a function of energy absorption, but only allows the energy-absorbing bolt 105 to pass through the fixing plate 101. It is conceivable that if it is necessary to absorb a larger amount of energy, the energy-absorbing groove 104a on the fixing plate 101 can also be retained.

[0088] Please see the appendix Figure 7 To be continued Figure 9A seat collision recovery energy absorption mechanism includes a recovery energy absorption mechanism, a fixed plate 1, and a moving plate 3. The moving plate 3 is rotatably connected to the fixed plate 1 via a pivot shaft 2, and the moving plate 3 is connected to a lead screw motor 102 (not shown in the figure). The recovery energy absorption mechanism includes a lock hole 11, a lock tongue 51 that engages with the lock hole 11, an energy-absorbing plate 7 sandwiched between the moving plate 1 and the fixed plate 1, and an energy-absorbing bolt 4 passing through an energy-absorbing groove 31 and an energy-absorbing plate 7. In the locked state where the lock tongue 51 is inserted into the lock hole 11, the moving plate 3 is fixed relative to the fixed plate 1. In the unlocked state where the lock tongue 51 is disengaged from the lock hole 11, the moving plate 3 rotates relative to the fixed plate 1, thereby pulling the lead screw motor 102, causing the energy-absorbing bolt 4 and the energy-absorbing groove 31 to undergo relative displacement to absorb energy.

[0089] The following section describes the different applications of the seat collision recovery energy absorption mechanism of this utility model in seats, using specific seat structures as examples.

[0090] Example 1:

[0091] Please see the appendix Figure 10 To be continued Figure 13 A seat includes the aforementioned seat collision recovery energy absorption mechanism, a base 101a, and a seat cushion frame assembly connected to the base 101a via a two-bar linkage. The front end of a lead screw motor 102 is rotatably connected to the two-bar linkage, and the rear end of the lead screw motor 102 is rotatably connected to a movable bracket 104c. The movable bracket 104c is rotatably mounted on the base 101a. The base 101a serves as a fixed plate 101 for the seat collision recovery energy absorption mechanism, and the movable bracket 104c serves as a moving plate 104 for the seat collision recovery energy absorption mechanism. A locking hole 11 is formed on the base 101a, and an energy-absorbing groove 104a is formed on the movable bracket 104c. An energy-absorbing plate 202 is sandwiched between the base 101a and the movable bracket 104c. An energy-absorbing bolt 105 passes through the energy-absorbing groove 104a and the energy-absorbing plate 202 and is mounted on the fixed plate 101. In a high-block value car seat structure, the bottom of the car seat has a certain space to arrange a rotating movable bracket 104c. The base 101a serves as a fixed plate 101, and the movable bracket 104c serves as a moving plate 104 that performs rotational movement, thus requiring less installation space.

[0092] It is conceivable that the lock hole 11 is also formed on the movable bracket 104c, and the energy-absorbing groove 104a is formed on the base 101a; an energy-absorbing plate 202 is sandwiched between the base 101a and the movable bracket 104c; the energy-absorbing bolt 105 passes through the energy-absorbing groove 104a and the energy-absorbing plate 202 and is installed on the movable bracket 104c. It is conceivable that the energy-absorbing plate 202 can also be installed on the side of the movable bracket 104 away from the base 101a.

[0093] See appendix Figure 14The upper end of the two-bar linkage is connected to the front end of the seat cushion frame assembly, and the lower end is connected to the base 101a. The seat cushion frame assembly can be rotated by the lead screw motor 102, thereby satisfying the adjustment function of the car seat cushion from the designed angle position to a large angle (such as the zero gravity angle). Under normal conditions, the energy recovery mechanism locks the movable bracket 104c on the base 101a. In the event of a collision, the energy recovery mechanism unlocks the movable bracket 104c, allowing it to rotate relative to the base 101a, thereby pulling the lead screw motor 102, which in turn pulls the two-bar linkage to quickly return the seat cushion frame assembly to the designed angle position.

[0094] Please see the appendix Figure 10 Appendix Figure 15 and attached Figure 17 When the housing of the unlocking component 107 is fixedly mounted on the base 101a by the first mounting bolt 106 and the second mounting bolt 108, and the lock hole 11 is formed on the base 101a and the energy-absorbing groove 104a is formed on the movable bracket 104c, the locking tongue 107a of the unlocking component 107 can penetrate the movable bracket 104c through the energy-absorbing groove 104a and penetrate the base 101a through the lock hole 11, so that the movable bracket 104c is in a locked state, and the energy-absorbing plate 202 is installed between the movable bracket 104c and the base 101a and is not subjected to force; the locking tongue 107a of the unlocking component 107 can disengage from the lock hole 11 and the energy-absorbing groove 104a, so that the movable bracket 104c is in an unlocked state.

[0095] Preferably, the first mounting bolt 106 can mate with the mounting nut 200 to secure the unlocking component 107. The second mounting bolt 108 can be a stepped bolt to allow the movable bracket 104c to rotate relative to the base 101a with the second mounting bolt 108 as the rotation center.

[0096] A locking block 201 is fixedly provided on the back of the base 101a. The locking tongue 107a of the unlocking member 107 passes through the lock hole 11 and the energy absorption groove 104a and is inserted into the locking block 201. The locking block 201 ensures the reliable locking of the locking tongue 107a of the unlocking member 107.

[0097] The two-bar linkage includes a front link 100 and an upper link 100c. The seat frame assembly includes a front seat tube 203, a rear seat tube 205, and a side seat plate 206. The front link 100 and the front seat tube 203 are bolted to the base 101a. The lead screw motor 201 is rotatably connected to the motor mounting bracket 204, which is welded to the front seat tube 203. The upper link 100c is rotatably connected to the front link 100 and the side seat plate 206 via stepped bolts. The rear link 100a is rotatably connected to the side seat plate 106 via stepped bolts, and is also rotatably connected to the rear seat tube 205 via a bushing and a thrust block, with the Y-direction restricted by the thrust block.

[0098] See appendix Figure 14 The lead screw motor 102 drives the front connecting rod 100 to rotate clockwise via the motor mounting bracket 204 and the front seat tube 203. With the cooperation of the rear connecting rod 100a and the upper connecting rod 100c, the seat side plate 206 moves the seat cushion from its designed angle position (as shown in the attached figure). Figure 14 (a) As shown, it is raised to a certain angle, such as the zero-gravity angle (the zero-gravity angle can be customized), as shown in the attached figure. Figure 14 As shown in (b).

[0099] Under normal operating conditions, the unlocking component 107 is in the locked state, that is, the locking tongue 107a of the unlocking component 107 extends out, passes through the lock hole 11, and inserts into the locking fixing block 201, as shown in the attached figure. Figure 15 and attached Figure 16 As shown, this restricts the rear end of the movable bracket 104c and the lead screw motor 102 from rotating backward.

[0100] When a collision occurs, the vehicle ECU detects the collision acceleration. If the acceleration meets a set threshold, it activates the unlocking mechanism 107, causing it to unlock. This involves retracting the latch 107a of the unlocking mechanism 107, disengaging it from the lock hole 11 and the locking block 201, as shown in the attached diagram. Figure 17 and attached Figure 18 As shown.

[0101] At this time, the movable bracket 104c becomes rotatable. Under the inertia and the pull of the human body, the seat cushion causes the movable bracket 104c to rotate relative to the base 101a around the second mounting bolt 108. This then pulls the screw motor 102 connected to the movable bracket 104c to move backward, and then pulls the seat cushion frame assembly back to the designed angle position via the front connecting rod 100 and the upper connecting rod 100c.

[0102] During the rotation of the movable bracket 104c, the energy-absorbing bolt 105 pulls off the connecting rib 202c between the first part 202a and the second part 202f with through holes 202b on the energy-absorbing plate 202, causing the energy-absorbing bolt 105 to move from the idle stroke section 104d of the energy-absorbing groove 104a to the energy-absorbing section 104e, thereby causing the seat cushion to move from a large angle state (as shown in the attached figure). Figure 13 (As shown by the solid line in the image) Quickly reset to the designed angle position (as shown in the attached image). Figure 14 (c) and appendix Figure 13 (As shown by the dashed line in the image).

[0103] Please see the appendix Figure 19Preferably, the energy-absorbing groove 104a can adopt a two-section arc-shaped structure, wherein the width A1 of the idle stroke section 104d is slightly larger than or equal to the diameter of the energy-absorbing bolt 105, and the width A2 of the energy-absorbing section 104e is slightly smaller than the diameter of the energy-absorbing bolt 105, so that when the movable bracket 104c rotates to the energy-absorbing section 104e of the energy-absorbing groove 104a, energy is absorbed by compressing the material of the movable bracket 104c. The return angle stroke of the seat cushion can be determined by the size of the energy-absorbing groove 104a of the movable bracket 104c, that is, the angle stroke T1 of the idle stroke section 104d + the angle stroke T2 of the energy-absorbing section 104e; the length of the idle stroke section 104e can be set according to the actual situation.

[0104] Please see the appendix Figure 18 The energy-absorbing section 104e may also include several spaced energy-absorbing tensile ribs 202d. When the moving plate 104 rotates relative to the fixed plate 101, the energy-absorbing tensile ribs 202d are broken by the energy-absorbing bolts 105, thereby absorbing energy.

[0105] The number of energy-absorbing tensile ribs 202d and the size of the connecting ribs 202c can be adaptively adjusted according to the actual tensile force threshold.

[0106] Since the movable bracket 104c is located at the rear end of the lead screw motor 102, when the movable bracket 104c rotates counterclockwise, the connection between the movable bracket 104c and the lead screw motor 102 moves downward. This is suitable for car seats with high block values, meaning that the bottom of the car seat has a large space to meet the downward movement requirements of the movable bracket 104c and the lead screw motor 102.

[0107] Reference Figure 34 An energy-absorbing groove 104a is also formed on the energy-absorbing plate 202, located beside the through hole 202b. The energy-absorbing groove 104a on the original movable bracket 104c no longer serves an energy-absorbing function, but merely allows the energy-absorbing bolt 105 to pass through the movable bracket 104c. It is conceivable that if a larger amount of energy needs to be absorbed, the energy-absorbing groove 104a on the movable bracket 104c can be retained.

[0108] Example 2:

[0109] Please see the appendix Figure 21 To be continued Figure 32A seat includes the aforementioned seat collision recovery energy absorption mechanism, a base 101a, and a seat cushion frame assembly connected to the base 101a via a two-bar linkage. The front end of a lead screw motor 102 is rotatably connected to the two-bar linkage, and the rear end of the lead screw motor 102 is rotatably connected to a movable bracket 104c via a motor mounting bolt 103. The movable bracket 104c is slidably mounted on the base 101a. The base 101a serves as a fixed plate 101 for the seat collision recovery energy absorption mechanism, and the movable bracket 104c serves as a moving plate 104 for the seat collision recovery energy absorption mechanism. A locking hole 11 is formed on the movable bracket 104c, and an energy absorption groove 104b is formed on the base 101a. An energy absorption sheet 202 is provided on the side of the base 101a facing away from the energy absorption bracket 104c.

[0110] In a car seat structure with a low block value, the space at the bottom of the car seat is small, making it impossible to arrange a rotating movable bracket 104c. Instead, the base 101a is used as a fixed plate 101, and a relatively sliding movable bracket 104c is set on the base 101a as a moving plate 104, which reduces the installation space requirements at the bottom of the car seat.

[0111] The front end of the two-bar linkage is connected to the front end of the seat cushion frame assembly, and the rear end of the two-bar linkage is connected to the base 101a. The seat cushion frame assembly can be rotated by the lead screw motor 102, thereby satisfying the function of adjusting the car seat from the designed angle position to a larger angle (such as the zero-gravity angle). Under normal conditions, the energy recovery mechanism locks the movable bracket 104c onto the base 101a. In the event of a collision, the energy recovery mechanism unlocks the movable bracket 104c, allowing it to slide backward relative to the base 101a, thereby pulling the lead screw motor 102, which in turn pulls the seat cushion frame assembly quickly back to the designed angle position via the two-bar linkage.

[0112] Please see the appendix Figure 21 To be continued Figure 21 The housing of the unlocking component 107 is fixedly mounted on the base 101a by the first mounting bolt 106 and the mounting nut 200. The locking tongue 107a of the unlocking component 107 can pass through the lock hole 11 and the energy absorption groove 104a through the base 101a and the movable bracket 104c. The base 101a and the movable bracket 104c are in a locked state, and the energy absorption plate 202 is not subjected to force. When the vehicle collides, the locking tongue 107a of the unlocking component 107 disengages from the lock hole 11 and the energy absorption groove 104a, and the base 101a and the movable bracket 104c are in an unlocked state.

[0113] Preferably, the first mounting bolt 106 can cooperate with the mounting nut 200 to fix the unlocking member 107 on the base 101a; the locking hole 11 and the mounting hole for mounting the motor mounting bolt 103 can be formed at both ends of the movable bracket 104c respectively.

[0114] The energy-absorbing plate 202 includes a first part 202a, a through hole 202b formed on the first part 202a, and a second part 202f. The motor mounting bolt 103 serves as the energy-absorbing bolt 105, and the motor mounting bolt 103 passes through the energy-absorbing groove 104a and the through hole 202b. The second part 202f is fixed on the base 101a. The first part 202a and the second part 202f are connected by a breakable connecting rib 202c.

[0115] Preferably, the first part 202a can adopt a C-shaped structure. The opening direction of the C-shaped structure is determined according to the movement direction of the part with the through hole 202b, so as to ensure that the energy-absorbing bolt 105, i.e. the motor mounting bolt 103, can separate the first part 202a with the through hole 202b from the second part 202f after the connecting rib 202c is broken.

[0116] The first part 202a with through hole 202b and the second part 202f can be connected by at least one connecting rib 202c. The number and size of the connecting ribs 202c can be adaptively adjusted according to the actual tensile force threshold.

[0117] A locking block 201 is fixedly provided on the back of the base 101a. The locking tongue 107a of the unlocking member 107 passes through the lock hole 11 and the energy absorption groove 104a and is inserted into the locking block 201. The locking block 201 ensures the reliable locking of the locking tongue 107a of the unlocking member 107.

[0118] The two-bar linkage includes a front link 100 and an upper link 100c. The seat frame assembly includes a front seat tube 203, a rear seat tube 205, and a side seat plate 206. The front link 100 and the front seat tube 203 are bolted to the base 101a. The lead screw motor 201 is rotatably connected to the motor mounting bracket 204, which is welded to the front seat tube 203. The upper link 100c is rotatably connected to the front link 100 and the side seat plate 206 via stepped bolts. The rear link 100a is rotatably connected to the side seat plate 106 via stepped bolts, and is also rotatably connected to the rear seat tube 205 via a bushing and a thrust block, with the Y-direction restricted by the thrust block.

[0119] See appendix Figure 25 The lead screw motor 102 drives the front connecting rod 100 to rotate clockwise via the motor mounting bracket 204 and the front seat tube 203. With the cooperation of the rear connecting rod 100a and the upper connecting rod 100c, the seat side plate 206 moves the seat cushion from its designed angle position (as shown in the attached figure). Figure 25 (a) As shown, it is raised to a certain angle, such as the zero-gravity angle (the zero-gravity angle can be customized), as shown in the attached figure. Figure 25 As shown in (b).

[0120] Under normal operating conditions, the unlocking component 107 is in the locked state, that is, the locking tongue 107a of the unlocking component 107 extends out, passes through the lock hole 11, and inserts into the locking fixing block 201, as shown in the attached figure. Figure 26 and attached Figure 27 As shown, the rear end of the movable bracket 104c and the lead screw motor 102 is restricted from sliding backward.

[0121] When a collision occurs, the vehicle ECU detects the collision acceleration. If the acceleration meets a set threshold, it activates the unlocking mechanism 107, causing it to unlock. This involves retracting the latch 107a of the unlocking mechanism 107, disengaging it from the lock hole 11 and the locking block 201, as shown in the attached diagram. Figure 28 and attached Figure 29 As shown.

[0122] At this time, the movable support 104c becomes slidable. Under the inertia and the pull of the human body, the seat cushion causes the movable support 104c to slide relative to the base 101a, which then pulls the lead screw motor 102 to slide backward. The seat cushion frame assembly is then pulled back to the designed angle position via the front connecting rod 100 and the upper connecting rod 100c.

[0123] As the movable bracket 104c slides backward, the motor mounting bolt 103 pulls off the connecting rib 202c between the first part 202a and the second part 202f with through holes 202b on the energy-absorbing plate 202, causing the motor mounting bolt 103 to move from the idle stroke section 104d of the energy-absorbing groove 104a to the energy-absorbing section 104e, thereby causing the seat cushion to move from a large angle state (as shown in the attached figure). Figure 24 (As shown by the solid line in the image) Quickly reset to the designed angle position (as shown in the attached image). Figure 25 (c) and appendix Figure 24 (As shown by the dashed line in the image).

[0124] Please see the appendix Figure 30 and attached Figure 31 Preferably, the energy-absorbing groove 104a can adopt a two-section straight structure, wherein the width A1 of the idle stroke 104d section is slightly greater than or equal to the diameter of the motor mounting bolt 103, and the width A2 of the energy-absorbing section 104e is slightly less than the diameter of the motor mounting bolt 103, so that when the motor mounting bolt 103 slides to the energy-absorbing section 104e of the energy-absorbing groove 104a, it achieves the purpose of energy absorption by squeezing the material of the movable bracket 104c.

[0125] Please see the appendix Figure 31 Specifically, the return angle travel of the seat cushion can be determined by the length of the energy absorption groove 104a of the movable bracket 104c, that is, the travel length T1 of the free travel segment 104d + the travel length T2 of the energy absorption segment 104e.

[0126] The energy absorption method is not limited to extruding materials, but can also involve breaking materials or other forms, so the shape of the energy absorption groove 104a can be varied.

[0127] Please see the appendix Figure 32 As shown in Figure 33(e), the energy-absorbing section 104e of the energy-absorbing groove 104a also includes multiple energy-absorbing tensile ribs 202d arranged at intervals, so that the motor mounting bolt 103 can sequentially break multiple energy-absorbing tensile ribs 202d during the sliding process in the energy-absorbing section 104e, thereby achieving the purpose of multiple energy absorption.

[0128] Because the energy-absorbing groove 104a is arranged horizontally, the movable bracket 104c slides backward without occupying vertical space, making it suitable for car seats with low block values, i.e., where the bottom space of the car seat is relatively small.

[0129] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A seat crash-recovery energy-absorbing mechanism, characterized by, The seat collision recovery energy-absorbing mechanism comprises a recovery energy-absorbing mechanism, a fixed plate and a moving plate; the moving plate is rotatably or slidably connected with the fixed plate, and the moving plate is connected with a screw motor; the recovery energy-absorbing mechanism comprises a lock hole, a lock tongue matched with the lock hole, an energy-absorbing groove, an energy-absorbing piece, and an energy-absorbing bolt passing through the energy-absorbing groove and the energy-absorbing piece; a through hole is formed in the energy-absorbing piece; in the locked state in which the lock tongue is inserted into the lock hole, the moving plate is fixed relative to the fixed plate, and the energy-absorbing bolt is connected with the energy-absorbing piece through the through hole; in the unlocked state in which the lock tongue is pulled out of the lock hole, the moving plate rotates or slides relative to the fixed plate, and the energy-absorbing bolt is pulled out of the through hole and then relatively displaced with the energy-absorbing groove to absorb energy.

2. The seat crash-recovery energy-absorption mechanism of claim 1, wherein, The energy-absorbing groove is formed in one of the moving plate and the fixed plate, and the lock hole is formed in the other one of the moving plate and the fixed plate.

3. The seat crash-recovery energy-absorption mechanism of claim 1, wherein, The energy-absorbing bolt is installed on the other one of the moving plate and the fixed plate.

4. The seat crash-recovery energy-absorption mechanism of claim 1, wherein, The energy-absorbing groove is formed in the energy-absorbing piece, and the energy-absorbing groove on the energy-absorbing piece is located beside the through hole.

5. The seat crash-recovery energy-absorption mechanism of claim 1, wherein, The energy-absorbing groove is formed in one of the moving plate and the fixed plate, and the energy-absorbing groove is formed in the energy-absorbing piece, and the energy-absorbing groove on the energy-absorbing piece is located beside the through hole.

6. The seat crash-recovery energy-absorption mechanism of claim 1, wherein, At least one weakened portion is arranged around the through hole of the energy-absorbing piece, so that when the moving plate rotates or slides relative to the fixed plate, the weakened portion of the energy-absorbing piece is broken, and the energy-absorbing bolt is pulled out of the through hole and separated from the energy-absorbing piece.

7. The seat crash-recovery energy-absorption mechanism of claim 1, wherein, The energy-absorbing piece comprises a first part and a second part, and the through hole is formed in the first part; when the moving plate is fixed relative to the fixed plate, the energy-absorbing bolt passes through the through hole and is connected with the first part; when the moving plate rotates or slides relative to the fixed plate, the first part and the second part are separated from each other under the action of the relative displacement of the energy-absorbing bolt and the energy-absorbing groove.

8. The seat crash-recovery energy-absorption mechanism of claim 7, wherein, At least one connecting rib is arranged between the first part and the second part, and the connecting rib is arranged to be pulled off when the moving plate rotates or slides relative to the fixed plate, so that the first part and the second part are separated from each other.

9. The seat crash-recovery energy-absorption mechanism of claim 1, wherein, The energy-absorbing groove comprises an idle stroke section and an energy-absorbing section; in the locked state, the energy-absorbing bolt is located in the idle stroke section of the energy-absorbing groove; when the moving plate rotates or slides relative to the fixed plate, the energy-absorbing bolt enters the energy-absorbing section from the idle stroke section.

10. The seat crash-recovery energy-absorption mechanism of claim 9, wherein, The energy-absorbing section comprises a plurality of energy-absorbing pull-off ribs arranged at intervals, and the energy-absorbing pull-off ribs are broken by the energy-absorbing bolt when the moving plate rotates or slides relative to the fixed plate, so that energy is absorbed.

11. A seat, characterized by The seat comprises the seat collision recovery energy-absorbing mechanism according to any one of claims 1 to 10, a base, and a seat cushion frame assembly connected with the base through a two-link mechanism; a front end of the screw motor is rotatably connected with the two-link mechanism, a rear end of the screw motor is rotatably connected with a movable support, the movable support is rotatably installed on the base, the base serves as the fixed plate of the seat collision recovery energy-absorbing mechanism, and the movable support serves as the moving plate of the seat collision recovery energy-absorbing mechanism; the lock hole is formed in one of the base and the movable support, the energy-absorbing groove is formed in the other one of the base and the movable support, and / or the energy-absorbing piece is formed.

12. A seat, characterized by The seat comprises the seat collision recovery energy-absorbing mechanism, the base, the seat cushion frame assembly connected with the base through the two-link mechanism, the front end of the lead screw motor is rotatably connected with the two-link mechanism, the rear end of the lead screw motor is rotatably connected with the movable support, the movable support is slidably installed on the base, the base serves as the fixed plate of the seat collision recovery energy-absorbing mechanism, and the movable support serves as the moving plate of the seat collision recovery energy-absorbing mechanism; the lock hole is formed on one of the base and the movable support, the energy-absorbing groove is formed on the other one of the base and the movable support, and / or the energy-absorbing piece.

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