Vehicle seat assembly and vehicle having the same

Abstract

The present invention discloses a vehicle seat assembly and a vehicle having the same. The vehicle seat assembly includes: a seat body; an energy absorbing device, the energy absorbing device includes: a first bracket, the first bracket is fixedly connected to the vehicle body floor; a second bracket, the second bracket is fixedly connected to the seat body, and the second bracket is movably arranged on the first bracket along the front-rear direction; an energy absorbing assembly, the energy absorbing assembly is respectively connected to the first bracket and the second bracket; a locking assembly, the locking assembly is connected to the energy absorbing assembly, and the locking assembly is configured to allow the second bracket to move backward and limit the second bracket from moving forward. The vehicle seat assembly according to the embodiment of the present invention can absorb the collision force in the event of a collision accident, and can limit the movement of the seat after absorbing the energy, so as to prevent the seat from moving forward and causing secondary damage to the occupant, thereby reducing the risk of occupant injury and reducing casualties.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle manufacturing, and in particular to a seat assembly of a vehicle and a vehicle having the seat assembly. Background Art

[0002] In order to protect the safety of passengers, vehicles in related technologies generally add energy-absorbing structures to the seat structure in order to reduce the damage caused by rear-end collisions. The energy-absorbing structures are generally crush devices or elastic energy-absorbing devices. It can be seen that at this stage, the focus is only on adding deformable energy-absorbing structures to reduce the energy transferred to passengers, and there are no effective measures to solve the problems of uncontrollable travel, non-reusability and secondary injuries. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a vehicle seat assembly, which can absorb the impact force in the event of a collision accident, and can limit the movement of the seat after absorbing the energy, so as to prevent the seat from moving forward and causing secondary damage to the occupant, thereby reducing the risk of injury to the occupant and reducing casualties.

[0004] The present invention also provides a vehicle having the vehicle seat assembly.

[0005] To achieve the above-mentioned purpose, according to an embodiment of the first aspect of the present invention, a vehicle seat assembly is proposed, the vehicle seat assembly includes: a seat body; an energy absorbing device, the energy absorbing device includes: a first bracket, the first bracket is fixedly connected to the vehicle body floor; a second bracket, the second bracket is fixedly connected to the seat body, and the second bracket is movably arranged on the first bracket along the front and rear directions; an energy absorbing assembly, the energy absorbing assembly is respectively connected to the first bracket and the second bracket; a locking assembly, the locking assembly is connected to the energy absorbing assembly, and the locking assembly is configured to allow the second bracket to move backward and limit the second bracket from moving forward.

[0006] The seat assembly of the vehicle according to the embodiment of the present invention can absorb the impact force when a collision accident occurs, and can limit the movement of the seat after absorbing the energy to prevent the seat from moving forward and causing secondary injury to the occupants, thereby reducing the risk of occupant injury and reducing casualties.

[0007] In addition, the seat assembly of the vehicle according to the above embodiment of the present invention may also have the following additional technical features:

[0008] According to some embodiments of the present invention, the locking assembly includes: a mating piece, which is fixedly connected to the first bracket; and a limiting piece, which is connected to the energy absorbing assembly and moves with the energy absorbing assembly, and when the second bracket moves backward, the limiting piece avoids the mating piece, and when the second bracket moves forward, the limiting piece is engaged with the mating piece.

[0009] According to some embodiments of the present invention, the mating piece is provided with a plurality of mating teeth, and the plurality of mating teeth are spaced apart in the front-to-back direction. The limiting piece is provided with a limiting tooth movable in the vertical direction between an extended position and a retracted position. When the second bracket moves backward, the limiting tooth is in the retracted position or a position between the retracted position and the extended position. When the second bracket moves forward, the limiting tooth is in the extended position and is engaged with at least one of the plurality of mating teeth.

[0010] According to some embodiments of the present invention, the mating tooth has a first guide surface and a first limiting surface, the first guide surface extends obliquely from front to back toward the direction close to the limiting member, and the limiting tooth has a second guide surface and a second limiting surface, the second guide surface extends obliquely from front to back toward the direction close to the limiting member, and the first limiting surface and the second limiting surface have the same extension direction.

[0011] According to some embodiments of the present invention, the angle between the first guide surface and the horizontal plane is greater than the angle between the second guide surface and the horizontal plane, and the first limiting surface and the second limiting surface extend in the vertical direction respectively.

[0012] According to some embodiments of the present invention, the limiting member further comprises: a limiting body and a return spring, the limiting tooth is arranged on the limiting body, and the return spring is respectively connected to the limiting body and the limiting tooth.

[0013] According to some embodiments of the present invention, the limiting member further includes: a reset pressing bar, which drives the limiting tooth to move from the extended position to the retracted position when the reset pressing bar is pressed.

[0014] According to some embodiments of the present invention, the energy absorption assembly includes: a first elastic member, which is fixedly connected to the first bracket and the locking assembly respectively; and a second elastic member, which is fixedly connected to the second bracket and the locking assembly respectively.

[0015] According to some embodiments of the present invention, the energy absorption assembly also includes: a first damping member, which is fixedly connected to the first bracket and the locking assembly respectively, and the first elastic member is sleeved on the outside of the first damping member; a second damping member, which is fixedly connected to the second bracket and the locking assembly respectively, and the second elastic member is sleeved on the outside of the second damping member.

[0016] According to an embodiment of a second aspect of the present invention, a vehicle is provided, the vehicle comprising the vehicle seat assembly according to the embodiment of the first aspect of the present invention.

[0017] According to the vehicle of the embodiment of the present invention, by utilizing the seat assembly of the vehicle according to the embodiment of the first aspect of the present invention, the seat assembly of the vehicle can absorb the impact force when a collision accident occurs, and can limit the movement of the seat after absorbing the energy to prevent the seat from moving forward and causing secondary injury to the occupant, thereby reducing the risk of occupant injury and reducing casualties.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 4 is a schematic structural diagram of a seat assembly of a vehicle according to an embodiment of the present invention.

[0021] Figure 2 yes Figure 1 Enlarged view of point D in the middle.

[0022] Figure numerals: energy absorption device 20, first bracket 21, second bracket 22, first elastic member 230, second elastic member 240, first damping member 250, second damping member 260, mating member 210, mating tooth 211, first guide surface 212, first limiting surface 213, limiting member 220, limiting tooth 221, second guide surface 222, second limiting surface 223, limiting body 224, return spring 225. DETAILED DESCRIPTION

[0023] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0024] A seat assembly for a vehicle according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0025] like Figure 1-Figure 2 As shown, a seat assembly for a vehicle according to an embodiment of the present invention includes a seat body and an energy absorbing device 20 .

[0026] In some embodiments, the energy absorbing device 20 includes a first bracket 21, a second bracket 22, an energy absorbing assembly and a locking assembly, wherein the first bracket 21 is fixedly connected to the vehicle body floor, the second bracket 22 is fixedly connected to the seat body, and the second bracket 22 is movably disposed on the first bracket 21 along the front-to-back direction (the front-to-back direction is as shown in FIG. Figure 1 In this way, the second bracket 22 can drive the seat body to move forward and backward relative to the first bracket 21. In other words, the seat body can move forward and backward relative to the vehicle body floor.

[0027] The energy absorbing assembly is connected to the first bracket 21 and the second bracket 22 respectively, so that when a collision accident occurs, such as a rear-end collision, the energy absorbing assembly can be used to absorb the energy during the collision, thereby reducing the risk of injury to the occupants and reducing casualties.

[0028] The locking assembly is connected to the energy absorbing assembly, and the locking assembly is configured to allow the second bracket 22 to move backward and restrict the second bracket 22 from moving forward. In this way, during a collision, the locking assembly can allow the second bracket 22 to drive the seat to move backward, reducing the impact on the human body, and after the energy absorption is completed, the second bracket 22 can be fixed at a certain position without moving forward, thereby achieving controllable travel of the energy absorbing device 20, repeated use, and reducing secondary injuries.

[0029] According to the vehicle seat assembly of the embodiment of the present invention, by providing an energy absorbing assembly and a locking assembly, the seat can move backwards when a collision occurs, and the energy absorbing assembly absorbs the energy during the collision to reduce the impact on the human body. After the energy absorption is completed, the energy absorbing assembly can be locked in a certain position, thereby locking the second bracket 22 in a certain position to prevent the second bracket 22 from moving forward. As a result, the stroke of the energy absorbing device 20 is controllable, which can reduce the secondary damage to the occupant caused by the seat body moving again.

[0030] For example, the energy absorption structure in the prior art generally uses a crush energy absorption structure or an elastic energy absorption structure. When the energy transmitted to the occupants when the vehicle is rear-ended exceeds the energy that can be absorbed by the limit deformation of the deformable part, the crush energy absorption structure will be completely destroyed, and then the movement of the seat body will affect or even harm the rear occupants. The elastic energy absorption component will rebound after the rear-end collision, causing secondary damage to the occupants. The present invention solves the problems of the energy absorption device 20 being uncontrollable in travel, non-reusable, and causing secondary damage by designing a locking component with a self-locking limit function installed on the energy absorption component.

[0031] Therefore, the seat assembly of the vehicle according to the embodiment of the present invention can absorb the impact force when a collision accident occurs, and can limit the movement of the seat after absorbing the energy to prevent the seat from moving forward and causing secondary injury to the occupants, thereby reducing the risk of occupant injury and reducing casualties.

[0032] A seat assembly for a vehicle according to a specific embodiment of the present invention will be described below with reference to the accompanying drawings.

[0033] In some specific embodiments of the present invention, Figure 1-Figure 2 As shown, a seat assembly for a vehicle according to an embodiment of the present invention includes a seat body and an energy absorbing device 20 .

[0034] What needs to be understood here is that, although the automobile braking technology is becoming more and more advanced, the number of serious rear-end collisions causing serious casualties has decreased, but there are still many cases of rear-end collisions due to speeding, lack of concentration, sudden lane changes, long braking distances, and blind spots of large passenger and truck vehicles. In addition, there are many rear-end collisions that cause more or less injuries to the occupants. If an energy-absorbing structure is added to the seat body, the risk of occupant injury can be reduced, reducing casualties.

[0035] Rear-end collision is a very common form of traffic accident. According to relevant statistics, car rear-end collision accounts for 30% to 40% of traffic accidents. In rear-end collision accidents, passengers are often injured, among which neck injuries are the most common. Generally speaking, the relative collision speed in common rear-end collision accidents is low. Surveys show that the driver's neck is injured in more than 30% of rear-end collisions. If the muscles around the neck are injured, you only need to rest or stay in bed for a period of time, but if the cervical spine is injured, there is a risk of paralysis or sequelae. At this stage, many vehicles reduce the impact on the human body by adding deformation energy absorption devices. One of them is to increase the collapse deformation structure to achieve the effect of energy absorption through the collapse deformation of the component; the other is to achieve the purpose of energy absorption through the expansion and contraction deformation of the spring.

[0036] However, existing energy-absorbing devices focus on adding easily deformable energy-absorbing structures to reduce the energy transferred to the occupants, and there are no effective measures to solve the problems of uncontrollable travel, non-reusability, and secondary injuries. In the crush deformation mode, when the energy transferred to the occupants when the vehicle is rear-ended exceeds the energy that can be absorbed by the limit deformation of the deformable part, the crush structure will be completely destroyed, and then the movement of the seat body will affect or even harm the rear occupants. In the telescopic deformation mode of the spring, the elastic component will rebound after the rear-end collision occurs, causing secondary injuries to the occupants. The present invention solves the problems of uncontrollable travel, non-reusability, and secondary injuries of the energy-absorbing device by designing a self-locking locking assembly installed at the front end of the elastic energy-absorbing assembly.

[0037] In some embodiments, the locking assembly has an unlocked state and a locked state. When the locking assembly is in the unlocked state, the second bracket 22 is allowed to move backward, and when the locking assembly is in the locked state, the second bracket 22 is restricted from moving forward.

[0038] In some specific embodiments of the present invention, Figure 1-Figure 2 As shown, the locking assembly includes a matching piece 210 and a limiting piece 220. The matching piece 210 is fixedly connected to the first bracket 21, and the limiting piece 220 is connected to the energy absorbing assembly and moves with the energy absorbing assembly. When the second bracket 22 moves backward, the limiting piece 220 avoids the matching piece 210, so that the energy absorbing assembly can move backward. When the second bracket 22 moves forward, the limiting piece 220 is engaged with the matching piece 210, so that the energy absorbing assembly can be limited to prevent it from moving forward.

[0039] Optionally, the matching piece 210 can be formed as a limit plate extending in the front-to-back direction, the rear end of the limit plate is fixedly connected to the first bracket 21 and the front end is formed as a free end. The limit piece 220 is formed as a limit block, which is arranged in the middle of the energy absorbing assembly in the front-to-back direction and moves with the energy absorbing assembly. When the second bracket 22 moves backward, the limit piece 220 can be deformed by the force of the matching piece 210, so that the limit piece 220 can avoid the matching piece 210. If the second bracket 22 is pushed forward, the limit piece 220 is engaged with the matching piece 210, and the matching piece 210 limits and locks the limit piece 220, so that the energy absorbing assembly is limited and locked, and the second bracket 22 is locked and cannot move forward.

[0040] In some optional embodiments, such as Figure 1-Figure 2 As shown, the mating member 210 is provided with a plurality of mating teeth 211, and the plurality of mating teeth 211 are arranged at intervals along the front-to-back direction, and the limiting member 220 is provided with a limiting tooth 221 that can move up and down in the vertical direction between the extended position and the retracted position (the up and down direction is as shown in FIG. Figure 1As shown in the figure, when the second bracket 22 moves backward, the limiting tooth 221 is acted upon by the force of the matching tooth 211, and the limiting tooth 221 moves from the extended position to the retracted position in the vertical direction, so that the limiting tooth 221 is in the retracted position or a position between the retracted position and the extended position, so that the limiting tooth 221 can avoid the matching tooth 211, so that the limiting member 220 can move backward. When the second bracket 22 moves forward, the limiting tooth 221 is in the extended position, and the limiting tooth 221 is engaged with at least one of the multiple matching teeth 211, so that the matching tooth 211 limits the limiting tooth 221, so that the limiting member 220 cannot move forward.

[0041] In some specific embodiments, Figure 1-Figure 2 As shown, the matching tooth 211 has a first guide surface 212 and a first limiting surface 213, the first guide surface 212 extends obliquely from front to back toward the direction close to the limiting member 220, and the limiting tooth 221 has a second guide surface 222 and a second limiting surface 223, the second guide surface 222 extends obliquely from front to back toward the direction close to the limiting member 220, which is not only convenient for positioning and guiding the backward movement of the limiting member 220, so that the limiting member 220 can move backward smoothly, but also convenient for the first guide surface 212 to match with the second guide surface 222, so that the first guide surface 212 drives the limiting member 220 to move to the retracted position to avoid the matching member 210. The first limiting surface 213 and the second limiting surface 223 extend in the same direction. In this way, it is convenient to achieve surface-to-surface contact between the first limiting surface 213 and the second limiting surface 223, thereby improving the limiting reliability.

[0042] Specifically, Figure 1-Figure 2 As shown, the angle between the first guide surface 212 and the horizontal plane is greater than the angle between the second guide surface 222 and the horizontal plane, so that the first guide surface 212 and the second guide surface 222 can achieve line contact between them, reducing the friction resistance between them. The first limiting surface 213 and the second limiting surface 223 extend in the vertical direction respectively. This makes it easy to reliably limit the limiting member 220.

[0043] In some optional embodiments, such as Figure 1-Figure 2 As shown, the limit member 220 also includes a limit body 224 and a return spring 225. The limit tooth 221 is movably arranged on the limit body 224 along the vertical direction. The return spring 225 is respectively connected to the limit body 224 and the limit tooth 221. The return spring 225 can drive the limit tooth 221 to move to the extended position, so that the limit tooth 221 can be in the extended position for a long time, which is convenient for accurate and reliable limiting of the limit member 220.

[0044] Specifically, the limit member 220 includes a limit body 224, two limit teeth 221 and a return spring 225. The limit body 224 is connected to the middle part of the energy absorption assembly in the front and rear direction. The middle part of the limit body 224 has a sliding channel extending up and down in the vertical direction. The two limit teeth 221 are respectively arranged at the upper and lower ends of the limit body 224, and are respectively movably engaged in the sliding channel along the vertical direction. The return spring 225 is arranged in the sliding channel. The upper end of the return spring 225 is connected to the upper limit tooth 221 and the lower end is connected to the lower limit tooth 221. The return spring 225 can drive the upper limit tooth 221 and the lower limit tooth 221 to move to the extended position respectively, so that the limit tooth 221 can be in the extended position for a long time, which is convenient for accurate and reliable limiting of the limit member 220.

[0045] Specifically, the limiter 220 further includes a reset pressing strip, which drives the limiter teeth 221 to move from the extended position to the retracted position when the reset pressing strip is pressed. In this way, the limiter 220 can avoid the mating member 210, making it easier for the limiter 220 to move forward to the initial position, thereby enabling the energy absorbing assembly to move forward to the initial position, thereby achieving the reset of the energy absorbing device 20, so that the energy absorbing device 20 can be reused.

[0046] In some embodiments of the present invention, Figure 1-Figure 2 As shown, the energy absorbing assembly includes a first elastic member 230 and a second elastic member 240. The first elastic member 230 is fixedly connected to the first bracket 21 and the locking assembly, respectively, and the second elastic member 240 is fixedly connected to the second bracket 22 and the locking assembly, respectively. In this way, it is easy to realize that the locking assembly moves with the energy absorbing assembly, so that the energy absorbing assembly can be accurately and timely reliably locked.

[0047] Optionally, the first elastic member 230 and the second elastic member 240 can be fixedly connected to the first bracket 21, the second bracket 22 and the locking assembly respectively by welding and / or bonding. In some optional examples, one end of the first elastic member 230 is fixedly connected to the first bracket 21 by welding and the other end is fixedly connected to the locking assembly by welding; one end of the second elastic member 240 is fixedly connected to the second bracket 22 by welding and the other end is fixedly connected to the locking assembly by welding. In other optional examples, one end of the first elastic member 230 is fixedly connected to the first bracket 21 by bonding and the other end is fixedly connected to the locking assembly by bonding; one end of the second elastic member 240 is fixedly connected to the second bracket 22 by bonding and the other end is fixedly connected to the locking assembly by bonding.

[0048] Specifically, the first elastic member 230 and the second elastic member 240 are both springs. The second elastic member 240 is arranged in front of the first elastic member 230. The spring force of the second elastic member 240 is greater than the spring force of the first elastic member 230, ensuring that the locking assembly can move backward when a collision occurs.

[0049] Specifically, the energy absorption assembly includes a first elastic member 230 extending in the front-to-back direction and a second elastic member 240 extending in the front-to-back direction. The first elastic member 230 is formed as a first spring, and the second elastic member 240 is formed as a second spring. The first spring is respectively connected to the first bracket 21 and the front end of the locking assembly, and the second spring is respectively connected to the second bracket 22 and the rear end of the locking assembly.

[0050] In some optional embodiments, such as Figure 1-Figure 2 As shown, the energy absorption assembly further includes a first damping member 250 and a second damping member 260. The first damping member 250 is fixedly connected to the first bracket 21 and the locking assembly respectively, the first elastic member 230 is sleeved on the outside of the first damping member 250, the second damping member 260 is fixedly connected to the second bracket 22 and the locking assembly respectively, and the second elastic member 240 is sleeved on the outside of the second damping member 260. In this way, not only can the first damping member 250 and the second damping member 260 be used to absorb the collision energy, but also the first damping member 250 and the first elastic member 230, the second damping member 260 and the second elastic member 240 can be used in coordination, which is convenient for delaying the acceleration change, making the entire energy absorption stroke smoother while assisting in energy absorption, and increasing the comfort of the passengers.

[0051] Optionally, the first damper 250 and the second damper 260 may be fixedly connected to the first bracket 21, the second bracket 22 and the locking assembly respectively by welding and / or bonding. In some optional examples, one end of the first damper 250 is fixedly connected to the first bracket 21 by welding and the other end is fixedly connected to the locking assembly by welding; one end of the second damper 260 is fixedly connected to the second bracket 22 by welding and the other end is fixedly connected to the locking assembly by welding. In other optional examples, one end of the first damper 250 is fixedly connected to the first bracket 21 by bonding and the other end is fixedly connected to the locking assembly by bonding; one end of the second damper 260 is fixedly connected to the second bracket 22 by bonding and the other end is fixedly connected to the locking assembly by bonding. Specifically, the energy absorbing assembly further includes a first damping member 250 extending in the front-to-back direction and a second damping member 260 extending in the front-to-back direction, the first damping member 250 is formed as a first damping rod, the first spring is sleeved on the outside of the first damping rod, the second damping member 260 is formed as a second damping rod, the second spring is sleeved on the outside of the second damping rod. The first damping rod is connected to the first bracket 21 and the locking assembly respectively, and the second damping rod is connected to the second bracket 22 and the locking assembly respectively.

[0052] In some optional embodiments, such as Figure 1-Figure 2 As shown, the first bracket 21 includes a first vertical rod extending in the up-down direction and a first horizontal rod extending in the front-back direction, the second bracket 22 includes a second vertical rod extending in the up-down direction and a second horizontal rod extending in the front-back direction, the first horizontal rod is fixedly connected to the vehicle body floor, the first vertical rod is connected to the rear end of the first horizontal rod, the second horizontal rod is fixedly connected to the seat body, and the second vertical rod is connected to the front end of the second horizontal rod. Among them, the front end of the first horizontal rod is provided with a front end guide rail, the lower end of the second vertical rod is provided with a front end slider suitable for cooperating with the front end guide rail, the rear end of the second horizontal rod is provided with a rear end guide rail, and the upper end of the first vertical rod is provided with a rear end slider suitable for cooperating with the rear end guide rail. In this way, the first bracket 21 and the second bracket 22 can slide relative to each other in the front-back direction. The rear end of the first elastic member 230 is connected to the first vertical rod and the front end is connected to the stopper 220, and the front end of the second elastic member 240 is connected to the second vertical rod and the rear end is connected to the stopper 220.

[0053] In some specific examples, such as Figure 1-Figure 2As shown, the shape of the energy absorbing device 20 in the present invention is variable. Specifically, the energy absorbing device 20 includes a first bracket 21, a second bracket 22, a locking assembly, and a first elastic member 230 and a second elastic member 240 respectively installed on the front and rear sides of the locking assembly, and the other ends of the first elastic member 230 and the second elastic member 240 are respectively connected to the first bracket 21 and the second bracket 22. The stroke is controlled by the first bracket 21, the second bracket 22, the first damping member 250 and the second damping member 260, the energy is absorbed by the first elastic member 230 and the second elastic member 240, the first damping member 250 and the second damping member 260, and the energy absorbing assembly is limited and reset by the locking assembly, thereby achieving controllable stroke, repeated use and reducing secondary injuries.

[0054] The present invention aims to provide protection for the personal safety of passengers in a rear-end collision vehicle. When a rear-end collision occurs, ordinary seats will transfer acceleration to the passenger's body, but due to inertia, the passenger's entire body will tilt backwards, and the neck and body will move relative to each other, which may cause serious damage to the passenger's neck. However, the energy-absorbing seat assembly of the present invention can share part of the energy transferred to the passenger, reduce the passenger's acceleration, and reduce the risk of injury to the passenger.

[0055] The energy absorption device 20 of the seat assembly includes an energy absorption bracket, which is formed by two curved tube beams into a first bracket 21 and a second bracket 22, and is connected by a guide rail, a slider and an energy absorption assembly. The upper curved tube beam is formed as the second bracket 22, which is fixedly connected to the seat cushion or seat adjuster of the seat body, and the lower tube beam is formed as the second bracket 22, which is fixedly connected to the vehicle body floor. The energy absorption device 20 composed of an energy absorption spring, a damping rod and a locking assembly is arranged along the x direction of the vehicle body (i.e., the front and rear direction of the vehicle body), and the matching part 210 of the locking assembly has a guide groove. The guide groove is installed and fixed on the lower tube beam along the x direction; the guide rail is blocked at the ends of the upper and lower tube beam guide rails to limit the forward movement of the seat body and prevent the occupant from hitting the steering wheel and getting injured. In addition, a damping rod is added to the energy absorption spring to delay the acceleration change, so that the entire energy absorption stroke is smoother while assisting in energy absorption, thereby increasing the comfort of the occupant. The spring force arranged at the front should be greater than the spring force arranged at the rear to ensure that the locking mechanism is negatively displaced along the x-axis when a collision occurs.

[0056] When a rear-end collision occurs, the vehicle body drives the lower tube beam of the energy absorbing bracket forward with acceleration. The occupants, the seat body and the upper tube beam of the energy absorbing bracket will remain in motion under the influence of inertia because they are not fixed to the vehicle body. When energy is to be transferred to the upper tube beam through the lower tube beam, the upper tube beam and its upper part will move in the opposite direction of the x-axis along the guide rail. The energy absorbing assembly arranged between the two tube beams will be stressed due to the relative movement of the upper and lower tube beams, which will cause the deformation of the energy absorbing spring and the contraction of the damping rod, thereby absorbing part of the energy transmitted from the lower tube beam and reducing the acceleration of the seat body and the human body. This process starts from the initial state where the upper and lower tube beams have no relative movement, to the energy absorbing state when relative movement occurs and the end of relative movement, and finally to the locked state of the energy absorbing device 20.

[0057] The limiting teeth 221 of the limiting member 220 in the locking assembly are formed into a wedge-shaped structure, and the matching member 210 is formed into a guide tube, and a limiting groove is formed between two adjacent matching teeth 211 of the guide tube. When the energy absorption is completed, the wedge-shaped structure will be stuck in the nearest limiting groove, so that the wedge-shaped structure can be locked in the limiting groove to prevent the spring from resetting and causing secondary injuries to the occupants. There are multiple matching teeth 211 arranged at intervals in the front and rear directions to avoid the situation where the spring rebounds before reaching the next locking groove when the stroke is too long, and to prevent the occupants from having to go through a long reset stroke and causing poor user experience. The groove width of the locking groove formed by the matching teeth in the present invention is 4mm, with a total of 22 levels, and the tooth width of the limiting teeth 221 is 5mm. The occupants can manually press the reset pressing strips arranged on the upper and lower sides of the guide tube to push the wedge-shaped structure out of the limiting groove, so that the spring is naturally reset. This process starts from the reset state where the wedge-shaped structure escapes from the locking groove and is about to rebound with a long stroke, to the end state where the upper tube beam is reset to the initial position and is restricted by the limit structure on the lower tube beam guide rail.

[0058] The present invention aims to combine the seat mounting bracket with the rear impact energy absorbing device 20, so that it can act as a seat bracket and have a passive safety protection mechanism that can absorb energy with a spring, lock in place, and reset afterwards when a rear impact occurs. The present invention can effectively provide protection for passengers by using an energy absorbing device 20 that is simple in structure, does not damage parts, and can be used repeatedly.

[0059] The following describes a vehicle according to an embodiment of the present invention. The vehicle according to an embodiment of the present invention includes the vehicle seat assembly according to the above-described embodiment of the present invention.

[0060] According to the vehicle of the embodiment of the present invention, by utilizing the seat assembly of the vehicle according to the above-mentioned embodiment of the present invention, the collision force can be absorbed in the event of a collision accident, and the movement of the seat can be limited after absorbing the energy to prevent the seat from moving forward and causing secondary injury to the occupants, thereby reducing the risk of occupant injury and reducing casualties.

[0061] Other components and operations of the vehicle according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0062] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more. In the description of the present invention, the first feature "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features not being in direct contact but being in contact through another feature between them.

[0063] In the description of the present invention, “on”, “over” and “above” a first feature from a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0064] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0066] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A seat assembly for a vehicle, characterized in that: include: Seat body; An energy absorbing device (20), the energy absorbing device (20) comprising: A first bracket (21), wherein the first bracket (21) is fixedly connected to a vehicle body floor; A second bracket (22), the second bracket (22) is fixedly connected to the seat body, and the second bracket (22) is movably arranged on the first bracket (21) along the front-rear direction; An energy absorbing component, the energy absorbing component being connected to the first bracket (21) and the second bracket (22) respectively; A locking assembly, the locking assembly being connected to the energy absorbing assembly, the locking assembly being configured to allow the second bracket (22) to move backward and to restrict the second bracket (22) from moving forward; The first bracket (21) comprises a first vertical rod extending in the up-down direction and a first horizontal rod extending in the front-back direction, the second bracket (22) comprises a second vertical rod extending in the up-down direction and a second horizontal rod extending in the front-back direction, the first horizontal rod is fixedly connected to the vehicle body floor, the first vertical rod is connected to the rear end of the first horizontal rod, the second horizontal rod is fixedly connected to the seat body, and the second vertical rod is connected to the front end of the second horizontal rod; The energy absorbing component comprises: A first elastic member (230), wherein the first elastic member (230) is fixedly connected to the first bracket (21) and the locking assembly respectively; A second elastic member (240), the second elastic member (240) being fixedly connected to the second bracket (22) and the locking assembly respectively; The energy absorbing component also includes: A first damping member (250), wherein the first damping member (250) is fixedly connected to the first bracket (21) and the locking assembly respectively, and the first elastic member (230) is sleeved on the outside of the first damping member (250); a second damping member (260), wherein the second damping member (260) is fixedly connected to the second bracket (22) and the locking assembly respectively, and the second elastic member (240) is sleeved on the outer side of the second damping member (260); The locking assembly comprises: A matching piece (210), the matching piece (210) being fixedly connected to the first bracket (21); a limiting member (220), the limiting member (220) being connected to the energy absorbing assembly and moving together with the energy absorbing assembly, the limiting member (220) avoiding the matching member (210) when the second bracket (22) moves backward, and the limiting member (220) being engaged with the matching member (210) when the second bracket (22) moves forward; The matching piece (210) is provided with a plurality of matching teeth (211), and the plurality of matching teeth (211) are arranged at intervals along the front-to-back direction; the limiting piece (220) is provided with a limiting tooth (221) movable along the vertical direction between an extended position and a retracted position; when the second bracket (22) moves backward, the limiting tooth (221) is located at the retracted position or a position between the retracted position and the extended position; when the second bracket (22) moves forward, the limiting tooth (221) is located at the extended position and is engaged with at least one of the plurality of matching teeth (211); The matching tooth (211) has a first guide surface (212) and a first limiting surface (213), the first guide surface (212) extending obliquely from front to back in a direction close to the limiting member (220), the limiting tooth (221) has a second guide surface (222) and a second limiting surface (223), the second guide surface (222) extending obliquely from front to back in a direction close to the limiting member (220), the first limiting surface (213) and the second limiting surface (223) extending in the same direction; The included angle between the first guide surface (212) and the horizontal plane is greater than the included angle between the second guide surface (222) and the horizontal plane, and the first limiting surface (213) and the second limiting surface (223) extend in the vertical direction respectively.

2. The vehicle seat assembly according to claim 1, characterized in that: The limiting member (220) further includes: A limiting body (224) and a return spring (225), wherein the limiting tooth (221) is arranged on the limiting body (224), and the return spring (225) is respectively connected to the limiting body (224) and the limiting tooth (221).

3. The vehicle seat assembly according to claim 2, characterized in that: The limiting member (220) further includes: A reset pressing bar, which drives the limiting tooth (221) to move from the extended position to the retracted position when the reset pressing bar is pressed.

4. A vehicle, characterized in that: A seat assembly for a vehicle comprising any one of claims 1-3.

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