Seat cushion collapse mechanism, seat, and vehicle

Abstract

The utility model discloses a seat cushion collapse mechanism, seat and vehicle relates to the field of automotive parts. Seat cushion collapse mechanism includes: connecting support, lifting support, lifting support rotatable about first rotation axis relative to connecting support, pin pulling device, including first jack and pin pulling piece, and the first jack is established on one of two supports, and the pin pulling piece is established on the other of two supports, and the pin pulling piece has electric control telescopic bolt and is opposite first jack setting, and the first jack deviates first rotation axis setting, damper, and the damper is established between connecting support and lifting support. The seat cushion collapse mechanism of the application, the pin pulling piece can be in emergency pin pulling after receiving the signal, and the connecting support and the lifting support rotate relative to each other, and the seat recovers from the zero gravity state to the normal sitting posture state, guaranteeing the life safety of the passenger. In addition, the damper effectively reduces the impact load on the passenger's body, improves the comfort and the protection effect.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to a seat cushion collapse mechanism, a seat, and a vehicle. Background Technology

[0002] Zero-gravity seats simulate the feeling of weightlessness by adjusting the seat angle, allowing the occupant's weight to be distributed more evenly, reducing pressure on the spine and joints, and providing better body support and comfort. However, most existing products are functionally limited and lack sufficient safety design, failing to meet the requirements of driving comfort and safety. Therefore, the crumple zone design of zero-gravity seats still needs improvement. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a seat cushion collapse mechanism, integrated into the seat. During driving, occupants can safely use the zero-gravity function. In the event of an accident, the seat cushion collapse function can quickly return the occupant to a safe and normal sitting position. Furthermore, during collapse, the damper absorbs the impact energy, effectively reducing the impact force suffered by the occupant in a collision and lowering the risk of bodily injury.

[0004] This invention also aims to provide a seat and vehicle having the aforementioned seat cushion collapse mechanism.

[0005] The seat cushion collapse mechanism according to this utility model includes: a connecting bracket, a lifting bracket, a pin-pulling device, and a damper. The lifting bracket is rotatably connected to the connecting bracket and is rotatable relative to the connecting bracket about a first rotation axis. The pin-pulling device includes a first insertion hole and a pin-pulling component. The first insertion hole is located on one of the connecting bracket and the lifting bracket, and the pin-pulling component is located on the other of the connecting bracket and the lifting bracket. The pin-pulling component has an electrically controlled retractable pin and is positioned directly opposite the first insertion hole, which is offset from the first rotation axis. The damper is located between the connecting bracket and the lifting bracket.

[0006] According to the seat cushion collapse mechanism of this utility model, when the seat is in a zero-gravity usage state, the connecting bracket and the lifting bracket in the seat cushion collapse mechanism are connected by a pin-pulling device and a damper, and the mechanism cannot collapse at this time. When needed, for example, when the vehicle has suffered or is about to suffer an impact, the pin-pulling device receives a signal and immediately pulls the pin to release the constraints of the lifting bracket and the connecting bracket. Under the weight of the occupant and the seat, the lifting bracket and the connecting bracket rotate relative to the first rotation axis, turning the seat from a zero-gravity state to a safe normal sitting posture.

[0007] When relative rotation occurs between the connecting bracket and the lifting bracket, the damper generates damping, which slows down the collapse speed of the seat cushion collapse mechanism and reduces the impact injury to the occupant.

[0008] In some embodiments, the connecting bracket is provided with a first shaft hole, and the lifting bracket is provided with a second shaft hole; The two ends of the damper are respectively fitted into the first shaft hole and the second shaft hole, and the damper constitutes the rotation axis of the lifting bracket relative to the connecting bracket.

[0009] In some embodiments, the damper includes: A damping shaft, the two ends of which are respectively inserted into the first shaft hole and the second shaft hole, and a shoulder protrusion is provided on the outer periphery of the damping shaft; A damping ring is sleeved on the damping shaft and secured to the shoulder protrusion. The damping ring is rotatable relative to the damping shaft and is located between the connecting bracket and the lifting bracket. One of the damping shaft and the damping ring is fixedly connected to the connecting bracket, and the other is fixedly connected to the lifting bracket.

[0010] When the pin is installed on the connecting bracket, the main body of the pin is fixed on the side of the connecting bracket away from the lifting bracket, and the pin is positioned directly opposite the second insertion hole. When the pin is installed on the lifting bracket, the main body of the pin is fixed on the side of the lifting bracket away from the connecting bracket, and the pin is positioned directly opposite the second insertion hole.

[0011] In some embodiments, the seat cushion collapse mechanism further includes: a fixing block, the fixing block having a third insertion hole, the fixing block being located between the connecting bracket and the lifting bracket; The fixing pad is fixedly connected to the connecting bracket or the lifting bracket on which the pull pin is installed, and the third insertion hole is set directly opposite the second insertion hole.

[0012] In some embodiments, the fixing pad is welded to the connecting bracket or the lifting bracket on which the pull pin is installed; The main body of the pull pin has mounting feet on its outer periphery, and the mounting feet are connected to the connecting bracket or the lifting bracket by fasteners.

[0013] In some embodiments, the seat cushion collapse mechanism further includes: an adjustment bracket for connecting an angle adjustment drive member, the adjustment bracket being fixedly connected to the lifting bracket and located on the side of the lifting bracket away from the connecting bracket.

[0014] In some embodiments, there are two connecting brackets arranged at intervals along a first direction, and the two connecting brackets are connected by a front connecting tube. The lifting brackets are two in number and are arranged at intervals along the first direction, and the two lifting brackets are connected by a lifting horizontal tube; The two lifting brackets and the two connecting brackets are rotatably connected in a one-to-one correspondence.

[0015] The seat according to this utility model includes: a bottom seat frame; a seat cushion support frame located above the bottom seat frame, the rear end of the seat cushion support frame being hinged to the bottom seat frame; a rotating bracket, the upper end of which is hinged to the front end of the seat cushion support frame; a seat cushion collapse mechanism, which is any one of the seat cushion collapse mechanisms described above and located at the front end of the bottom seat frame; wherein, a connecting bracket is hinged to the front end of the bottom seat frame and rotates about a first rotation axis; the connecting bracket is hinged to the lower end of the rotating bracket; and an angle adjustment drive member, which is telescopically configurable, with one end hinged to the lifting bracket and the other end hinged to the seat cushion support frame.

[0016] The vehicle according to this utility model is equipped with the seat described above.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the seat cushion collapse structure of some embodiments of the present invention; Figure 2 This is a front view of the seat cushion collapse structure of some embodiments of the present invention; Figure 3 This is a cross-sectional view of the lifting bracket and the connecting bracket of the pin-pulling component according to some embodiments of the present invention; Figure 4 This is a cross-sectional view of the damper connection lifting bracket and the connecting bracket according to some embodiments of the present invention; Figure 5 This is a cross-sectional view of the damper in some embodiments of the present invention; Figure 6 This is a schematic diagram showing the connection between the mounting legs and the lifting bracket of the pin-pulling device in some embodiments of this utility model; Figure 7This is a cross-sectional view of the pin puller according to some embodiments of the present invention; Figure 8 This is a schematic diagram showing the connection between the lifting bracket, the adjusting bracket, and the lifting horizontal tube in some embodiments of this utility model; Figure 9 This is a schematic diagram illustrating the connection method between the lifting bracket and the adjusting bracket in some embodiments of this utility model; Figure 10 This is a structural schematic diagram of a seat (hidden seat cushion) according to some embodiments of the present invention; Figure 11 This is a schematic diagram showing the connection between the connecting bracket and the front connecting tube in some embodiments of this utility model; Figure 12 This is a schematic diagram of the seat (hidden seat cushion) from another perspective, representing some embodiments of the present invention. Figure 13 This is a schematic diagram of the seat (hidden seat cushion) from another perspective, representing some embodiments of the present invention. Figure 14 This is another structural schematic diagram of the seat (hidden seat cushion) according to some embodiments of the present utility model; Figure 15 for Figure 14 Schematic diagram of cross-section along the PP direction; Figure 16 This is a schematic diagram of a vehicle according to some embodiments of the present invention.

[0019] Figure label: 1000 vehicles Seat 100 Bottom seat frame 101, seat cushion support frame 102, rotating bracket 103, angle adjustment drive component 104. Seat cushion collapse mechanism 10 Connecting bracket 1, first shaft hole 11 Lifting bracket 2, second shaft hole 21, second insertion hole 22 First axis of rotation L1, Pin-pulling device 3, first insertion hole 31, pin-pulling component 32, main body 320, insertion pin 321, mounting leg 322, fastener 323. Damper 4, Damping Shaft 41, Damping Ring 42, Shoulder Protrusion 43, Bushing 44 Fixing pad 5, third insertion hole 51 Adjustable bracket 6, front connecting tube 7, lifting horizontal tube 8. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the terms "lateral," "length," "upper," "lower," "front," "rear," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] The cushion collapse mechanism 10 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0024] According to the seat cushion collapse mechanism 10 of this utility model, referring to Figure 1 It includes: a connecting bracket 1, a lifting bracket 2, a pin pulling device 3, and a damper 4.

[0025] like Figures 2-3 As shown, the lifting bracket 2 is rotatably connected to the connecting bracket 1, and the lifting bracket 2 is rotatable relative to the connecting bracket 1 about a first rotation axis L1. The pin-pulling device 3 includes a first insertion hole 31 and a pin-pulling component 32. The first insertion hole 31 is located on one of the connecting bracket 1 and the lifting bracket 2, and the pin-pulling component 32 is located on the other of the connecting bracket 1 and the lifting bracket 2. The pin-pulling component 32 has an electrically controlled retractable pin 321 and is positioned directly opposite the first insertion hole 31, which is offset from the first rotation axis L1. A damper 4 is located between the connecting bracket 1 and the lifting bracket 2.

[0026] Specifically, the lifting bracket 2 of the seat cushion collapse mechanism 10 is rotatably connected to the connecting bracket 1 via a rotating shaft at the first rotation axis L1, so that the lifting bracket 2 can tilt backward or return to its original position around the first rotation axis L1.

[0027] The pin-pulling device 3 includes a first insertion hole 31 and a pin-pulling component 32. When the first insertion hole 31 is provided on the connecting bracket 1, the corresponding lifting bracket 2 is provided with the pin-pulling component 32; if the first insertion hole 31 is provided on the lifting bracket 2, the connecting bracket 1 is provided with the pin-pulling component 32. The combination of the first insertion hole 31 and the pin-pulling component 32 can lock and unlock the connecting bracket 1 and the lifting bracket 2. That is, when the pin 321 of the pin-pulling component 32 extends and is inserted into the first insertion hole 31, there is no rotational freedom between the connecting bracket 1 and the lifting bracket 2, and the two can be regarded as a whole frame. When the pin 321 of the pin-pulling component 32 retracts and disengages from the first insertion hole 31, the connecting bracket 1 and the lifting bracket 2 can rotate, and relative movement can occur between them.

[0028] The pin puller 32 is an electrically controlled latching mechanism, which can immediately pull the pin upon receiving a signal. The pin puller 32 contains an electrically controlled retractable latch 321. The control signal source for the pin puller 32 can be flexibly configured; for example, the signal can come from the vehicle's EDU system, a detection sensor on the seat 100, or even a cloud server. Specifically, the vehicle is equipped with an acceleration sensor, and even the seatbelt device has a belt speed sensor. After these sensors detect information and analyze it, they determine whether a collision is occurring or has occurred, and transmit a signal to the pin puller 32 to trigger the pin pull.

[0029] It should also be noted that the pin puller 32 can adopt the pin puller structure found in existing seat cushion collapse mechanisms, or it can adopt a commercially available electrically controlled pin puller. The specific structural form of the pin puller 32 is not limited here, and the most common electromagnetic drive type electrically controlled pin puller, motor drive type electrically controlled pin puller, electromagnetic + mechanical holding type electrically controlled pin puller, and pneumatic / hydraulic drive type electrically controlled pin puller, etc., can be selected.

[0030] Furthermore, the control method for the pin-pulling component 32 can be as follows: a sensitive motor or control valve is installed inside the main body 320 of the pin-pulling component 32. Upon receiving a signal, the motor or control valve is driven to actuate the pin 321. Alternatively, in some designs, a movable chamber is provided inside the main body 320, and a piston is installed inside the movable chamber, connected to the pin 321. An explosive structure and an electric spark are also provided on one side of the piston inside the main body 320. Upon receiving a signal, the electric spark generates a spark to ignite the combustible components within the explosive structure, rapidly producing a large amount of gas. The increased gas pressure on the piston side pushes the piston to move, thereby moving the pin 321 and causing the pin to be pulled out.

[0031] In some specific embodiments, under zero gravity, the pin 321 extends and inserts into the first socket 31 to lock the relative positions of the connecting bracket 1 and the lifting bracket 2. When a collision signal or a one-button pin-removal command is received, the pin 321 retracts electrically, disengaging from the first socket 31 and releasing the rotational lock between the connecting bracket 1 and the lifting bracket 2. After the rotational lock is released, the connecting bracket 1 will rotate downward relative to the lifting bracket 2 around the first rotation axis L1 under gravity, causing the seat 100, which was originally in a zero-gravity state, to quickly rotate to a safe normal sitting posture. At the same time, the damper 4 connected between the connecting bracket 1 and the lifting bracket 2 plays a damping role due to the relative movement of the two brackets. For example, the internal damping medium generates viscous resistance through the damping gap, outputting a reverse braking torque to make the collapse process of the seat cushion collapse mechanism 10 relatively smooth. The setting of the damper 4 avoids additional injury to the occupant due to rigid impact or secondary collision, ensuring that while the one-button pin-removal function is implemented, safety protection under collision conditions can also be achieved.

[0032] In this application, the damper 4 can be sandwiched between the connecting bracket 1 and the lifting bracket 2. The damper 4 can also be a shaft-type damper or the like known in the prior art. The damper 4 can contain a damping material, such as a viscous liquid.

[0033] In some embodiments, refer to Figure 4 The connecting bracket 1 has a first shaft hole 11, and the lifting bracket 2 has a second shaft hole 21. The two ends of the damper 4 are respectively installed in the first shaft hole 11 and the second shaft hole 21, and the damper 4 constitutes the rotation axis of the lifting bracket 2 relative to the connecting bracket 1.

[0034] Specifically, one end of the damper 4 is fitted into the first shaft hole 11 on the connecting bracket 1, and the other end of the damper 4 is fitted into the second shaft hole 21 on the lifting bracket 2. That is to say, when changing from a zero-gravity state to a normal sitting position, the lifting bracket 2 will rotate relative to the connecting bracket 1 about the axis of the damper 4. On the one hand, the damper 4, as the rotation axis, directly bears the rotational load of the lifting bracket 2 about the first rotation axis L1 (such as the bending moment generated by the weight of the occupant in a zero-gravity state, dynamic impacts during daily use, etc.), and the damper 4 ensures that the seat 100 is adjusted smoothly. On the other hand, in the event of a collision or during a one-button release, when the lifting bracket 2 rotates about the L1 axis relative to the connecting bracket 1, the damping medium inside the damper 4 (such as silicone oil or damping oil) generates viscous resistance through the damping gap, outputting a braking torque in the opposite direction, so that the collapse process of the seat cushion collapse mechanism 10 is relatively slowed down, avoiding additional injury to the occupant due to rigid impact or secondary collision.

[0035] In some specific embodiments, reference is made to Figure 5 The damper 4 includes a damping shaft 41 and a damping ring 42.

[0036] like Figures 4-5 As shown, the two ends of the damping shaft 41 are respectively inserted into the first shaft hole 11 and the second shaft hole 21. The outer periphery of the damping shaft 41 is provided with a shoulder protrusion 43. The damping ring 42 is sleeved on the damping shaft 41 and is locked on the shoulder protrusion 43. The damping ring 42 can rotate relative to the damping shaft 41. The damping ring 42 is located between the connecting bracket 1 and the lifting bracket 2.

[0037] One of the damping shaft 41 and the damping ring 42 is fixedly connected to the connecting bracket 1, and the other is fixedly connected to the lifting bracket 2.

[0038] The damper 4 adopts a split rotary damping design. If the damping shaft 41 is fixedly connected to the connecting bracket 1, the damping ring 42 is connected to the lifting bracket 2. If the damping shaft 41 is fixedly connected to the lifting bracket 2, the damping ring 42 is connected to the connecting bracket 1. Figure 4 , Figure 5 As shown, for ease of explanation, the damping ring 42 is fixed to the connecting bracket 1, and the damping shaft 41 is connected to the lifting bracket 2. When a vehicle collision occurs or the one-button release function is activated, the lifting bracket 2 rotates relative to the connecting bracket 1 around the first rotation axis L1. Because the damping ring 42 is fixed to the connecting bracket 1 and the damping shaft 41 is fixed to the lifting bracket 2, the damping shaft 41 will rotate relative to the damping ring 42 around the first rotation axis L1.

[0039] The shoulder protrusion 43 is located between the first shaft hole 11 and the second shaft hole 21, which restricts the movement of the damping ring 42 along the damping shaft 41 axial direction, ensuring that the damping ring 42 is always in the correct working position, while ensuring stable contact between the damping ring 42 and the connecting bracket 1, thus improving the overall structural reliability.

[0040] Furthermore, referring to Figures 4-5 The damping shaft 41 is a hollow shaft, which facilitates the connection of other structures through the damping shaft 41. For example, a pin can be inserted here to connect to the bottom seat frame 101, forming a hinge point with the bottom seat frame 101.

[0041] Specifically, when the lifting bracket 2 rotates rapidly, the high-speed relative motion between the damping ring 42 and the damping shaft 41 causes the damping medium to generate a strong shearing effect in the narrow gap, forming a large damping force and slowing down the rotation speed. When the lifting bracket 2 rotates at a slower speed, the resistance of the damping medium decreases accordingly, so that the seat cushion collapse process exhibits a gradual buffering characteristic, avoiding additional injury to the occupant due to rigid impact or secondary collision.

[0042] Furthermore, referring to Figure 4 The damper 4 also includes a bushing 44 disposed inside the damping shaft 41. The bushing 44 fits tightly inside the damping shaft 41, and the outer wall of the damping shaft 41 directly engages with the inner wall of the second shaft hole 21 of the lifting bracket 2.

[0043] Furthermore, the shoulder protrusion 43 is an annular protrusion surrounding the damping shaft 41. Furthermore, the damping ring 42 is a housing fitted onto the annular protrusion. Furthermore, the housing of the damping shaft 41, namely the damping ring 42, is connected to the connecting bracket 1 by welding.

[0044] In some embodiments, refer to Figure 3 , Figure 6 The connecting bracket 1 or lifting bracket 2 for installing the pin 32 is provided with a second insertion hole 22, which is positioned opposite the first insertion hole 31.

[0045] When the pin 32 is installed on the connecting bracket 1, the main body 320 of the pin 32 is fixed on the side of the connecting bracket 1 away from the lifting bracket 2, and the pin 321 is positioned directly opposite the second insertion hole 22. At this time, the first insertion hole 31 is located at the corresponding position on the lifting bracket 2, allowing the pin 321 to pass through the second insertion hole 22 and be inserted into the first insertion hole 31, thereby achieving rotational locking between the connecting bracket 1 and the lifting bracket 2.

[0046] When the pin 32 is installed on the lifting bracket 1, the main body 320 of the pin 32 is fixed on the side of the lifting bracket 2 away from the connecting bracket 1, and the pin 321 is positioned directly opposite the second insertion hole 22. At this time, the first insertion hole 31 is located at the corresponding position on the connecting bracket 1, allowing the pin 321 to pass through the second insertion hole 22 and be inserted into the first insertion hole 31, thereby achieving rotational locking between the lifting bracket 2 and the connecting bracket 1.

[0047] With the above configuration, regardless of whether the pin 32 is installed on the connecting bracket 1 or the lifting bracket 2, its pin 321 can be accurately aligned with the first pin 31 through the corresponding second pin 22, ensuring that the locking and unlocking functions between the connecting bracket 1 and the lifting bracket 2 can be reliably completed during the telescopic movement. At the same time, it can adapt to different structural installation requirements and improve the versatility and assembly flexibility of the solution.

[0048] In some embodiments, refer to Figure 3 The seat cushion collapse mechanism 10 further includes: a fixing block 5, which has a third insertion hole 51 and is located between the connecting bracket 1 and the lifting bracket 2. The fixing block 5 is fixedly connected to the connecting bracket 1 or the lifting bracket 2 on which the mounting pin 32 is installed, and the third insertion hole 51 is positioned opposite the second insertion hole 22.

[0049] Specifically, when the pin 32 is installed on the connecting bracket 1, the fixing pad 5 is fixed on the side of the connecting bracket 1 away from the lifting bracket 2; when the pin 32 is installed on the lifting bracket 2, the fixing pad 5 is fixed on the side of the lifting bracket 2 away from the connecting bracket 1, and the third insertion hole 51 is directly opposite the second insertion hole 22 (the insertion hole opened on the connecting bracket 1 or the lifting bracket 2), while maintaining coaxial alignment with the first insertion hole 31 (the insertion hole opened on the lifting bracket 2 or the connecting bracket 1).

[0050] Optionally, the fixing pad 5 is welded to the connecting bracket 1 or the lifting bracket 2 for mounting the pin 32. The fixing pad 5 is welded to the lifting bracket 2 for mounting the pin 32. The main body 320 of the pin 32 has mounting feet 322 on its outer periphery, and the mounting feet 322 are connected to the connecting bracket 1 or the lifting bracket 2 by fasteners 323.

[0051] like Figure 3 , Figure 7 As shown, for clarity, the lifting bracket 2 with the fixing pad 5 welded to it and the mounting pin 32 is explained. The pin 32 is installed on the side of the lifting bracket 2 away from the connecting bracket 1. The main body 320 of the pin 32 is fixed to the lifting bracket 2 by mounting feet 322 and fasteners 323, while the fixing pad 5 is directly fixed to the lifting bracket 2 by welding. At this time, the electrically controlled retractable pin 321 of the pin 32 extends towards the connecting bracket 1 away from the lifting bracket 2. The pin 321 passes through the third insertion hole 51 of the fixing pad 5 and the second insertion hole 22 of the lifting bracket 2 in sequence, and then is precisely inserted into the first insertion hole 31 on the connecting bracket 1, realizing the rotational locking of the lifting bracket 2 and the connecting bracket 1.

[0052] In some embodiments, refer to Figures 8-10 The seat cushion collapse mechanism 10 also includes an adjustment bracket 6 for connecting the angle adjustment drive 104. The adjustment bracket 6 is fixedly connected to the lifting bracket 2 and is located on the side of the lifting bracket 2 away from the connecting bracket 1.

[0053] The adjustment bracket 6 is fixedly connected to the side of the lifting bracket 2 away from the connecting bracket 1 by fasteners (such as bolts, welding, etc.), and the adjustment bracket 6 and the lifting bracket 2 are fitted and fixed to each other to ensure that the adjustment bracket 6 and the lifting bracket 2 form a rigid connection. The angle adjustment drive 104 is installed on the adjustment bracket 6. When the seat 100 is in a zero-gravity state, the angle adjustment drive 104 can drive the adjustment bracket 6 to move, thereby driving the lifting bracket 2 and the connecting bracket 1 to move. This completes the angle adjustment of the seat cushion.

[0054] Separating the angle adjustment drive 104 from the main structure of the lifting bracket 2 avoids the weight of the angle adjustment drive 104 from directly acting on the lifting bracket 2 and other components, and provides an independent installation space for the angle adjustment drive 104 to facilitate heat dissipation, maintenance and fault diagnosis. At the same time, the reliable fixation of the adjustment bracket 6 and the lifting bracket 2 ensures that the output torque of the angle adjustment drive 104 is accurately transmitted to the lifting bracket 2, ensuring a smooth and reliable zero-gravity adjustment process.

[0055] In some specific embodiments, such as Figure 9 As shown, the adjusting bracket 6 is fixedly connected to the lifting bracket 2 by welding.

[0056] In some embodiments, refer to Figure 9 , Figure 11 There are two connecting brackets 1, arranged at intervals along the first direction, and the two connecting brackets 1 are connected by a front connecting pipe 7. There are also two lifting brackets 2, arranged at intervals along the first direction, and the two lifting brackets 2 are connected by a lifting horizontal pipe 8. The two lifting brackets 2 are rotatably connected to the two connecting brackets 1 in a one-to-one correspondence.

[0057] like Figure 1 As shown, the seat cushion collapse mechanism 10 has two sets of identical sub-mechanisms symmetrically distributed along the first symmetrical direction. Each set of sub-mechanisms includes a connecting bracket 1 and a lifting bracket 2. The two connecting brackets 1 are arranged at intervals along the first direction of the vehicle body and are rigidly connected to each other through the front connecting pipe 7 to form a rigid beam structure extending along the first direction. The two lifting brackets 2 are also arranged at intervals along the first direction and are rigidly connected to each other through the lifting cross pipe 8 to form a rigid support frame symmetrical to the connecting brackets 1.

[0058] The front connecting tube 7 and the lifting cross tube 8 are arranged parallel to each other along the first direction, so that the connecting brackets 1 and the lifting brackets 2 on both sides form a highly symmetrical overall structure through rigid connecting parts. When the lifting bracket 2 on either side rotates relative to the corresponding connecting bracket 1 around the first rotation axis L1 (such as when performing zero-gravity adjustment or collision collapse action), due to the rigid constraint of the front connecting tube 7 and the lifting cross tube 8, the lifting bracket 2 on the other side will rotate synchronously—that is, the movement state of the lifting brackets 2 on both sides is strictly consistent, ensuring that the left and right sides of the entire seat cushion collapse mechanism 10 move synchronously, avoiding the problem of seat 100 tilting or shifting due to the difference in movement on one side.

[0059] Of course, in other embodiments, the above-mentioned sub-mechanisms may be one or three, and there is no limitation here.

[0060] According to the seat 100 of this utility model, referring to Figure 10 , Figures 12-15As shown, the seat 100 includes: a bottom seat frame 101, a seat cushion support frame 102, a rotating bracket 103, a seat cushion collapse mechanism 10, and an angle adjustment drive 104. The seat 100 also includes a seat cushion (not shown), which is disposed on the seat cushion support frame 102. When the angle of the seat cushion support frame 102 is adjusted, it drives the seat cushion angle adjustment.

[0061] like Figure 10 As shown, the seat support frame 102 is located above the bottom seat frame 101. The rear end of the seat support frame 102 is connected to the bottom seat frame 101 by a hinge. The upper end of the rotating bracket 103 is hinged to the front end of the seat support frame 102. The seat collapse mechanism 10 is located at the front end of the bottom seat frame 101.

[0062] The connecting bracket 1 is hinged to the front end of the bottom seat frame 101 and rotates around the first rotation axis L1. The connecting bracket 1 is hinged to the lower end of the rotating bracket 103.

[0063] Specifically, such as Figure 10 As shown, the rear end of the bottom seat frame 101 is hinged to the rear end of the seat cushion support frame 102, the front end of the seat cushion support frame 102 is hinged to the upper end of the rotating bracket 103, the lower end of the rotating bracket 103 is hinged to the seat cushion collapse mechanism 10, and the seat cushion collapse mechanism 10 is hinged to the bottom seat frame 101 along the first direction.

[0064] Optionally, the connecting bracket 1, damper 4, and lifting bracket 2 are connected in sequence. Then, the connecting bracket 1 is hinged to the front end of the bottom seat frame 101 on the side away from the lifting bracket 2. Of course, it is also possible that in some designs, the lifting bracket 2 is hinged to the front end of the bottom seat frame 101 on the side away from the connecting bracket 1.

[0065] In zero gravity, the bottom seat frame 101, seat support frame 102, rotating bracket 103, and seat cushion collapse mechanism 10 form a four-bar linkage. The bottom seat frame 101 serves as a relatively fixed base, the seat support frame 102 supports the seat cushion, and the rotating bracket 103 connects the front end of the seat support frame 102 and the seat cushion collapse mechanism 10. The connecting bracket 1 is hinged to the front end of the bottom seat frame 101 and the lower end of the rotating bracket 103, respectively. This linkage structure design allows the angle and height of the seat support frame 102 to change when the links rotate relative to each other. When the lower end of the rotating bracket 103 rotates around the hinge point of the connecting bracket 1 (the first rotation axis L1), since the upper end of the rotating bracket 103 is hinged to the front end of the seat support frame 102, it will pull the front end of the seat support frame 102 to rotate synchronously and lift the seat cushion upward. At the same time, the rear end of the seat support frame 102 rotates upward around the rear end of the bottom seat frame 101 through the hinge axis, thereby gradually increasing the tilt angle of the seat support frame 102.

[0066] Furthermore, the angle adjustment drive 104 is telescopically oriented, with one end hinged to the lifting bracket 2 and the other end hinged to the seat support frame 102 or the bottom seat frame 101. With the addition of the angle adjustment drive 104, the bottom seat frame 101, seat support frame 102, rotating bracket 103, seat cushion collapse mechanism 10, and angle adjustment drive 104 form two three-bar linkages. The cooperation of the bottom seat frame 101, seat support frame 102, rotating bracket 103, seat cushion collapse mechanism 10, and angle adjustment drive 104 allows them to share forces and torques during movement, ensuring the angular stability of the seat support frame 102 in zero gravity. By adjusting the length of the angle adjustment drive 104, the shape of the two triangles can be adjusted, thereby adjusting the angle of the seat support frame 102 and the seat.

[0067] The hinged connection between the links allows each component to rotate flexibly within a certain range, while maintaining a relatively stable positional relationship when needed, so as to maintain the stability of the zero-gravity attitude.

[0068] When the pin is pulled out with one key, the connecting bracket 1 and the lifting bracket 2 are unlocked, and the angle adjustment drive 104 releases its restriction on the connecting bracket 1. At this time, the bottom seat frame 101, seat support frame 102, rotating bracket 103, and seat cushion collapse mechanism 10 become an unstable four-bar linkage, deforming downwards under gravity. The length of the angle adjustment drive 104 remains unchanged, causing the connecting bracket 1 and the lifting bracket 2 to rotate relative to each other. This creates damping and protection as the connecting bracket 1 presses down relative to the lifting bracket 2, making the collapse process of the seat cushion collapse mechanism 10 relatively smooth. The smooth descent of the seat cushion avoids additional injury to the occupant due to rigid impact or secondary collisions, ensuring safety protection in collision conditions while simultaneously enabling the one-key pin pull function. This increases driving comfort and achieves the best possible protective effect.

[0069] According to the vehicle 1000 of this utility model, referring to Figure 16 It is equipped with seat 100. This seat 100 makes the cushion collapse process relatively slow, avoiding other injuries that the occupant may suffer.

[0070] The vehicle 1000 can be a passenger car, commercial vehicle or special vehicle. The interior seating area is equipped with a seat 100. During the journey, the seat 100 can be put into a zero-gravity state by using a one-button zero-gravity button on the vehicle 1000 to meet the needs of passengers for a comfortable riding experience.

[0071] In this specification, the terms "embodiment," "example," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0072] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A seat cushion collapse mechanism, characterized in that, include: Connecting bracket; A lifting bracket is rotatably connected to the connecting bracket, and the lifting bracket is rotatable relative to the connecting bracket about a first rotation axis; A pin-pulling device, comprising a first insertion hole and a pin-pulling component, wherein the first insertion hole is disposed on one of the connecting bracket and the lifting bracket, and the pin-pulling component is disposed on the other of the connecting bracket and the lifting bracket, the pin-pulling component having an electrically controlled retractable pin and being disposed directly opposite the first insertion hole, and the first insertion hole being disposed offset from the first rotation axis. A damper is disposed between the connecting bracket and the lifting bracket.

2. The seat cushion collapse mechanism according to claim 1, characterized in that, The connecting bracket is provided with a first shaft hole, and the lifting bracket is provided with a second shaft hole; The two ends of the damper are respectively fitted into the first shaft hole and the second shaft hole, and the damper constitutes the rotation axis of the lifting bracket relative to the connecting bracket.

3. The seat cushion collapse mechanism according to claim 2, characterized in that, The damper includes: A damping shaft, the two ends of which are respectively inserted into the first shaft hole and the second shaft hole, and a shoulder protrusion is provided on the outer periphery of the damping shaft; A damping ring is sleeved on the damping shaft and secured to the shoulder protrusion. The damping ring is rotatable relative to the damping shaft and is located between the connecting bracket and the lifting bracket. One of the damping shaft and the damping ring is fixedly connected to the connecting bracket, and the other is fixedly connected to the lifting bracket.

4. The seat cushion collapse mechanism according to claim 1, characterized in that, The connecting bracket or the lifting bracket on which the pin is installed is provided with a second insertion hole, and the second insertion hole is positioned directly opposite the first insertion hole. When the pin is installed on the connecting bracket, the main body of the pin is fixed on the side of the connecting bracket away from the lifting bracket, and the pin is positioned directly opposite the second insertion hole. When the pin is installed on the lifting bracket, the main body of the pin is fixed on the side of the lifting bracket away from the connecting bracket, and the pin is positioned directly opposite the second insertion hole.

5. The seat cushion collapse mechanism according to claim 4, characterized in that, Also includes: A fixing block is provided with a third insertion hole, and the fixing block is located between the connecting bracket and the lifting bracket; The fixing pad is fixedly connected to the connecting bracket or the lifting bracket on which the pull pin is installed, and the third insertion hole is set directly opposite the second insertion hole.

6. The seat cushion collapse mechanism according to claim 5, characterized in that, The fixing pad is welded to the connecting bracket or the lifting bracket on which the pull pin is installed; The main body of the pull pin is provided with mounting feet on its outer periphery, and the mounting feet are connected to the connecting bracket or the lifting bracket by fasteners.

7. The seat cushion collapse mechanism according to claim 1, characterized in that, Also includes: An adjustment bracket for connecting the angle adjustment drive component, the adjustment bracket being fixedly connected to the lifting bracket and located on the side of the lifting bracket away from the connecting bracket.

8. The seat cushion collapse mechanism according to any one of claims 1-7, characterized in that, The connecting brackets are two in number and are arranged at intervals along the first direction, and the two connecting brackets are connected by a front connecting tube. The lifting brackets are two in number and are arranged at intervals along the first direction, and the two lifting brackets are connected by a lifting horizontal tube; The two lifting brackets and the two connecting brackets are rotatably connected in a one-to-one correspondence.

9. A type of seat, characterized in that, include: Bottom seat frame; A seat cushion support frame is located above the bottom seat frame, and the rear end of the seat cushion support frame is hinged to the bottom seat frame. A rotating bracket, the upper end of which is hinged to the front end of the seat cushion support frame; A seat cushion collapse mechanism, wherein the seat cushion collapse mechanism is the same as any one of claims 1-8, and is located at the front end of the bottom seat frame; The connecting bracket is hinged to the front end of the bottom seat frame and rotates about the first rotation axis; The connecting bracket is hinged to the lower end of the rotating bracket; An angle adjustment drive is provided, which is telescopically oriented, with one end hinged to the lifting bracket and the other end hinged to the seat cushion support frame or the bottom seat frame.

10. A vehicle, characterized in that, The seat according to claim 9 is installed.

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