CN115923620B - Seat assembly of vehicle and vehicle with seat assembly - Google Patents

Abstract

The invention discloses a seat assembly of a vehicle and the vehicle with the same, wherein the seat assembly of the vehicle comprises a seat body; the energy absorbing device comprises a first bracket fixedly connected with a vehicle body floor of a vehicle, a second bracket fixedly connected with a seat body, an energy absorbing assembly movably arranged on the first bracket along the front-back direction and connected with the first bracket and the second bracket respectively, and a locking assembly connected with the energy absorbing assembly and configured to allow the second bracket to move backwards and limit the second bracket to move forwards. According to the seat assembly of the vehicle, disclosed by the embodiment of the invention, the collision capacity can be absorbed when a collision accident occurs, the movement of the seat can be limited after the energy absorption, and the secondary injury to passengers caused by forward movement of the seat is avoided, so that the risk of injury to the passengers and the casualties can be reduced.

Description

Seat assembly of vehicle and vehicle with seat assembly

Technical Field

The invention relates to the technical field of vehicle manufacturing, in particular to a seat assembly of a vehicle and the vehicle with the seat assembly of the vehicle.

Background

In order to protect the safety of passengers, the vehicle in the related art generally adds an energy-absorbing structure on the seat structure for reducing the damage caused by rear-end collision, and the energy-absorbing structure is generally a crumple device or an elastic energy-absorbing device. Therefore, the energy absorption structure which is easy to deform is only increased to reduce the energy transmitted to the passengers, and the problems of uncontrollable stroke, incapability of being reused, secondary injury and the like are solved without effective measures.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the seat assembly of the vehicle, which can absorb the collision capacity when a collision accident happens, limit the movement of the seat after absorbing energy, and prevent the seat from moving forwards to cause secondary injury to passengers, thereby reducing the risk of injury to the passengers and reducing casualties.

The invention also provides a vehicle with the seat assembly of the vehicle.

In order to achieve the above object, an embodiment according to a first aspect of the present invention provides a seat assembly of a vehicle including a seat body, an energy absorbing device including a first bracket fixedly connected to a body floor of the vehicle, a second bracket fixedly connected to the seat body, the second bracket being movably provided on the first bracket in a front-rear direction, an energy absorbing assembly connected to the first bracket and the second bracket, respectively, and a locking assembly connected to the energy absorbing assembly, the locking assembly being configured to allow the second bracket to move rearward and restrict the second bracket from moving forward.

According to the seat assembly of the vehicle, disclosed by the embodiment of the invention, the collision capacity can be absorbed when a collision accident occurs, the movement of the seat can be limited after the energy absorption, and the secondary injury to passengers caused by forward movement of the seat is avoided, so that the risk of injury to the passengers and the casualties can be reduced.

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

according to some embodiments of the invention, the locking assembly comprises a matching piece fixedly connected with the first bracket and a limiting piece connected with the energy absorbing assembly and moving together with the energy absorbing assembly, wherein the limiting piece avoids the matching piece when the second bracket moves backwards, and the limiting piece is clamped with the matching piece when the second bracket moves forwards.

According to some embodiments of the invention, the engaging member is provided with a plurality of engaging teeth, the engaging teeth are spaced apart in a front-rear direction, the stopper is provided with a stopper tooth movable in a vertical direction between an extended position and a retracted position, the stopper tooth is in the retracted position or in a position between the retracted position and the extended position when the second bracket is moved backward, and the stopper tooth is in the extended position and is engaged with at least one of the engaging teeth when the second bracket is moved forward.

According to some embodiments of the invention, the mating tooth has a first guiding surface and a first limiting surface, the first guiding surface extends obliquely from front to back in a direction approaching the limiting member, the limiting tooth has a second guiding surface and a second limiting surface, the second guiding surface extends obliquely from front to back in a direction approaching the limiting member, and the first limiting surface and the second limiting surface extend in the same direction.

According to some embodiments of the invention, an included angle between the first guiding surface and the horizontal plane is larger than an included angle between the second guiding surface and the horizontal plane, and the first limiting surface and the second limiting surface extend along a vertical direction respectively.

According to some embodiments of the invention, the limiting piece further comprises a limiting body and a return spring, wherein the limiting teeth are arranged on the limiting body, and the return spring is respectively connected with the limiting body and the limiting teeth.

According to some embodiments of the invention, the stop further includes a reset button that, when depressed, drives the stop tooth from the extended position to the retracted position.

According to some embodiments of the invention, the energy absorbing assembly comprises a first elastic member fixedly connected with the first bracket and the locking assembly respectively, and a second elastic member fixedly connected with the second bracket and the locking assembly respectively.

According to some embodiments of the invention, the energy absorbing assembly further comprises a first damping piece fixedly connected with the first bracket and the locking assembly respectively, the first elastic piece is sleeved outside the first damping piece, and a second damping piece fixedly connected with the second bracket and the locking assembly respectively, and the second elastic piece is sleeved outside the second damping piece.

An embodiment according to a second aspect of the invention proposes a vehicle comprising a seat assembly of a vehicle according to an embodiment of the first aspect of the invention.

According to the vehicle disclosed by the embodiment of the invention, the seat assembly of the vehicle can absorb the collision capacity when a collision accident happens and limit the movement of the seat after absorbing the energy, so that the seat is prevented from moving forwards to cause secondary injury to passengers, and the risk of injury to the passengers and the casualties can be reduced.

Additional aspects and advantages of the 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.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

Fig. 1 is a schematic structural view of a seat assembly of a vehicle according to an embodiment of the present invention.

Fig. 2 is an enlarged view at D in fig. 1.

Reference numerals refer to the energy absorbing device 20, the first bracket 21, the second bracket 22, the first elastic member 230, the second elastic member 240, the first damping member 250, the second damping member 260, the mating member 210, the mating teeth 211, the first guiding surface 212, the first limiting surface 213, the limiting member 220, the limiting teeth 221, the second guiding surface 222, the second limiting surface 223, the limiting body 224, and the return spring 225.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

A seat assembly for a vehicle according to an embodiment of the present invention is described below with reference to the accompanying drawings.

As shown in fig. 1-2, a seat assembly for a vehicle according to an embodiment of the present invention includes a seat body and an energy absorber 20.

In some embodiments, the energy absorber 20 includes a first bracket 21, a second bracket 22, an energy absorber assembly, and a locking assembly, the first bracket 21 is fixedly connected to a body floor of the vehicle, the second bracket 22 is fixedly connected to the seat body, and the second bracket 22 is movably provided on the first bracket 21 in a front-rear direction (the front-rear direction is shown in fig. 1). In this way, the second bracket 22 can drive the seat body to move back and forth relative to the first bracket 21, in other words, the seat body can move back and forth relative to the floor of the vehicle body.

The energy absorbing components are respectively connected with the first bracket 21 and the second bracket 22, so that when a collision accident, such as a rear-end collision accident, occurs, the energy absorbing components can be used for absorbing energy in the collision process, the risk of injury to passengers is reduced, and the casualties are reduced.

The locking assembly is coupled to the energy absorbing assembly and is configured to permit rearward movement of the second bracket 22 and to limit forward movement of the second bracket 22. In this way, in the collision process, the locking component can allow the second bracket 22 to drive the seat to move backwards, so as to reduce 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 forwards, so that the stroke of the energy absorption device 20 is controllable, the energy absorption device is reused, and secondary injuries are reduced.

According to the seat assembly of the vehicle, the energy absorption assembly and the locking assembly are arranged, so that the seat can move backwards when a collision accident occurs, and the energy absorption assembly absorbs energy in the collision process, so that impact on a human body is reduced. The energy absorbing assembly can be locked in place after the energy absorption is completed, thereby locking the second bracket 22 in place and preventing the second bracket 22 from moving forward. Therefore, the stroke of the energy absorbing device 20 is controllable, and secondary injury to the passengers caused by the secondary movement of the seat body can be reduced.

For example, the energy absorbing structure in the prior art generally uses a crumple energy absorbing structure or an elastic energy absorbing structure, when the energy transferred to the occupant exceeds the energy absorbed by the limit deformation of the deformation member when the vehicle is in a rear collision, the crumple energy absorbing structure is completely destroyed, and then the movement stroke of the seat body can affect or even hurt the rear occupant. The elastic energy absorbing member can rebound after rear-end collision occurs, and secondary injury is generated to passengers. The invention solves the problems of uncontrollable travel, incapability of repeated use and secondary damage of the energy absorbing device 20 by designing the locking component with the self-locking and limiting functions, which is arranged on the energy absorbing component.

Therefore, according to the seat assembly of the vehicle, the collision capacity can be absorbed when a collision accident occurs, the movement of the seat can be limited after the energy absorption, and secondary injury to passengers caused by forward movement of the seat is avoided, so that the risk of injury to the passengers and casualties can be reduced.

A seat assembly for a vehicle according to an embodiment of the present invention is described below with reference to the accompanying drawings.

In some embodiments of the present invention, as shown in FIGS. 1-2, a seat assembly for a vehicle in accordance with an embodiment of the present invention includes a seat body and an energy absorber 20.

It should be understood that, at present, although the automobile braking technology is more and more advanced, cases of serious casualties caused by serious rear-end collision accidents of the automobile are reduced, but cases of rear-end collision caused by problems such as rapid driving, inattention, sudden doubling, overlong braking distance, vision blind areas of large-sized passengers and trucks are still more, and besides, a plurality of rear-end collision accidents are also caused, so that passengers are more or less injured. If the energy absorption structure is added on the seat body, the risk of injury of passengers can be reduced, and casualties can be reduced.

Rear-end collision is a very common traffic accident form, and according to relevant statistical data, the rear-end collision of automobiles accounts for 30 to 40 percent of traffic accidents. In rear-end accidents, occupants of the vehicle are often injured, with neck injuries being the most common. In general, the relative collision speed is low in common rear-end collision accidents, and investigation shows that more than 30% of rear-end collision accidents cause damage to the neck of a driver. In the case of a cervical muscle injury, only rest or bed rest is needed, but if the cervical vertebra is injured, paralysis or sequelae are at risk. In the prior art, a plurality of vehicles reduce the impact on human bodies by adding a deformation energy absorption device. One of the two is to increase the crumple deformation structure, the energy absorption effect is achieved through crumple deformation of the component, and the other is to achieve the energy absorption effect through expansion deformation of the spring.

However, the existing energy-absorbing device is focused on increasing a deformable energy-absorbing structure to reduce energy transmitted to passengers, and has no effective measure to solve the problems of uncontrollable stroke, incapability of being reused, secondary injury and the like. In the crush deformation mode, when the energy transmitted to the passenger when the vehicle is in a rear-end collision exceeds the energy absorbed by the limit deformation of the deformation piece, the crush structure is completely destroyed, and then the moving stroke of the seat body can influence or even hurt the passenger behind. In the expansion/contraction deformation mode of the spring, the elastic member rebounds after the rear-end collision occurs, and secondary injury is caused to the occupant. The self-locking assembly is arranged at the front end of the elastic energy absorbing assembly, so that the problems that the stroke of the energy absorbing device is uncontrollable, the energy absorbing device cannot be reused and secondary damage is caused are solved.

In some embodiments, the locking assembly has an unlocked state and a locked state, allowing rearward movement of the second bracket 22 when the locking assembly is in the unlocked state, and limiting forward movement of the second bracket 22 when the locking assembly is in the locked state.

In some embodiments of the present invention, as shown in fig. 1-2, the locking assembly includes a mating member 210 and a limiting member 220, where the mating member 210 is fixedly connected to the first bracket 21, the limiting member 220 is connected to and moves with the energy absorbing assembly, and the limiting member 220 is configured to clear the mating member 210 when the second bracket 22 moves backward, so that the energy absorbing assembly can move backward, and the limiting member 220 is configured to engage with the mating member 210 when the second bracket 22 moves forward, so as to limit the energy absorbing assembly and prevent the energy absorbing assembly from moving forward.

Alternatively, the engaging member 210 may be formed as a stopper plate extending in the front-rear direction, the rear end of the stopper plate being fixedly coupled to the first bracket 21 and the front end being free. The stopper 220 is formed as a stopper block which is provided at the middle part of the energy absorbing assembly in the front-rear direction and moves together with the energy absorbing assembly. Upon rearward movement of the second bracket 22, the retainer 220 may deform under the force of the engaging member 210, whereby the retainer 220 may clear the engaging member 210. If the second bracket 22 is pushed forward, the limiting member 220 is clamped with the matching member 210, and the matching member 210 performs limiting locking on the limiting member 220, so that the energy absorption assembly is limited and locked, and the second bracket 22 is locked and cannot move forward.

In some alternative embodiments, as shown in fig. 1-2, the engaging member 210 is provided with a plurality of engaging teeth 211, the plurality of engaging teeth 211 are spaced apart in a front-rear direction, the limiting member 220 is provided with limiting teeth 221 (in an up-down direction as shown in fig. 1) that are movable up and down in a vertical direction between an extended position and a retracted position, and the limiting teeth 221 are forced by the engaging teeth 211 when the second bracket 22 moves backward, and the limiting teeth 221 move from the extended position to the retracted position in the vertical direction, so that the limiting teeth 221 are located at a position between the retracted position and the extended position, and thus the limiting teeth 221 can avoid the engaging teeth 211, so that the limiting member 220 can move backward. When the second bracket 22 moves forward, the limiting teeth 221 are in the extended position, and the limiting teeth 221 are at least in clamping fit with one of the plurality of matching teeth 211, so that the matching teeth 211 limit the limiting teeth 221, and the limiting piece 220 cannot move forward.

In some embodiments, as shown in fig. 1-2, the mating teeth 211 have a first guide surface 212 and a first stop surface 213, the first guide surface 212 extends obliquely from front to back toward the stop 220, the stop teeth 221 have a second guide surface 222 and a second stop surface 223, and the second guide surface 222 extends obliquely from front to back toward the stop 220, which not only facilitates positioning and guiding the rearward movement of the stop 220, but also facilitates mating of the first guide surface 212 with the second guide surface 222 such that the first guide surface 212 drives the stop 220 toward the retracted position to avoid the mating member 210. The extending direction of the first limiting surface 213 is the same as that of the second limiting surface 223. Thus, the surface-to-surface contact fit between the first limiting surface 213 and the second limiting surface 223 is facilitated, and the limiting reliability is improved.

Specifically, as shown in fig. 1-2, the included angle between the first guiding surface 212 and the horizontal plane is larger than the included angle between the second guiding surface 222 and the horizontal plane, so that the line contact between the first guiding surface 212 and the second guiding surface 222 can be realized, and the friction resistance between the two can be reduced. The first and second limiting surfaces 213 and 223 extend in the vertical direction, respectively. This facilitates reliable limiting of the limiter 220.

In some alternative embodiments, as shown in fig. 1-2, the limiting member 220 further includes a limiting body 224 and a return spring 225, where the limiting teeth 221 are movably disposed on the limiting body 224 along a vertical direction, and the return spring 225 is respectively connected to the limiting body 224 and the limiting teeth 221, where the return spring 225 can drive the limiting teeth 221 to move toward an extended position, so that the limiting teeth 221 can be in the extended position for a long time, so as to facilitate accurate and reliable limiting of the limiting member 220.

Specifically, the limiting member 220 includes a limiting body 224, two limiting teeth 221 and a return spring 225, the limiting body 224 is connected at the middle part of the energy-absorbing assembly in the front-rear direction, the middle part of the limiting body 224 is provided with a sliding channel extending vertically, the two limiting teeth 221 are respectively arranged at the upper end and the lower end of the limiting body 224 and are respectively matched in the sliding channel in a movable manner along the vertical direction, the return spring 225 is arranged in the sliding channel, the upper end of the return spring 225 is connected with the upper limiting teeth 221, the lower end of the return spring 225 is connected with the lower limiting teeth 221, and the return spring 225 can drive the upper limiting teeth 221 and the lower limiting teeth 221 to move towards the extending positions respectively, so that the limiting teeth 221 are in the extending positions for a long time, and the limiting member 220 is convenient to accurately and reliably limit.

Specifically, the limiting member 220 further includes a reset pressing bar, and when the reset pressing bar is pressed, the limiting teeth 221 are driven to move from the extended position to the retracted position. Therefore, the limiting piece 220 can avoid the matching piece 210, and the limiting piece 220 can conveniently move forwards to the initial position, so that the energy absorption assembly can move forwards to the initial position, the resetting of the energy absorption device 20 is realized, and the energy absorption device 20 can be reused conveniently.

In some embodiments of the present invention, as shown in fig. 1-2, the energy absorbing assembly includes a first elastic member 230 and a second elastic member 240, the first elastic member 230 is fixedly connected with the first bracket 21 and the locking assembly, respectively, and the second elastic member 240 is fixedly connected with the second bracket 22 and the locking assembly, respectively. Therefore, the locking component can move along with the energy absorbing component conveniently, and the energy absorbing component can be locked reliably and timely.

Alternatively, the first elastic member 230 and the second elastic member 240 may be fixedly connected with the first bracket 21, the second bracket 22, and the locking assembly, respectively, by welding and/or bonding. In some alternative 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, and 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 alternative 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, and 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.

Specifically, the first elastic member 230 and the second elastic member 240 are springs, the second elastic member 240 is disposed in front of the first elastic member 230, and the spring force of the second elastic member 240 is greater than that of the first elastic member 230, so as to ensure that the locking assembly can move backward when a collision occurs.

Specifically, the energy absorbing assembly includes a first elastic member 230 extending in the front-rear direction and a second elastic member 240 extending in the front-rear direction, the first elastic member 230 being formed as a first spring, the second elastic member 240 being formed as a second spring, the first spring being connected to the front ends of the first bracket 21 and the locking assembly, respectively, and the second spring being connected to the rear ends of the second bracket 22 and the locking assembly, respectively.

In some alternative embodiments, as shown in fig. 1-2, the energy absorbing assembly further includes a first damping member 250 and a second damping member 260, the first damping member 250 is fixedly connected with the first bracket 21 and the locking assembly, the first elastic member 230 is sleeved outside the first damping member 250, the second damping member 260 is fixedly connected with the second bracket 22 and the locking assembly, and the second elastic member 240 is sleeved outside the second damping member 260. Therefore, the first damping piece 250 and the second damping piece 260 can be utilized to absorb collision energy, the first damping piece 250 and the first elastic piece 230 can be matched with the second damping piece 260 and the second elastic piece 240, acceleration change can be delayed conveniently, the whole energy absorption stroke is more gentle while energy absorption is assisted, and passenger comfort is improved.

Alternatively, the first damping member 250 and the second damping member 260 may be fixedly coupled to the first bracket 21, the second bracket 22, and the locking assembly, respectively, by welding and/or bonding. In some alternative examples, one end of the first damping member 250 is fixedly connected to the first bracket 21 by welding and the other end is fixedly connected to the locking assembly by welding, and one end of the second damping member 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 alternative examples, one end of the first damping member 250 is fixedly connected to the first bracket 21 by bonding and the other end is fixedly connected to the locking assembly by bonding, and one end of the second damping member 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-rear direction and a second damping member 260 extending in the front-rear direction, the first damping member 250 being formed as a first damping rod, a first spring being sleeved outside the first damping rod, the second damping member 260 being formed as a second damping rod, the second spring being sleeved outside 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.

In some alternative embodiments, as shown in fig. 1-2, the first bracket 21 includes a first vertical rod extending in the up-down direction and a first horizontal rod extending in the front-rear 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-rear direction, the first horizontal rod is fixedly connected to the body floor of the vehicle, 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 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 sliding block which is suitable for being matched 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 sliding block which is suitable for being matched with the rear end guide rail. This facilitates the relative sliding of the first bracket 21 and the second bracket 22 in the front-rear direction. The first elastic member 230 has a rear end connected to the first vertical rod and a front end connected to the stopper 220, and the second elastic member 240 has a front end connected to the second vertical rod and a rear end connected to the stopper 220.

In some specific examples, as shown in fig. 1-2, the energy absorbing device 20 of the present invention has a variable shape, and in particular, the energy absorbing device 20 includes a first bracket 21, a second bracket 22, a locking assembly, and first and second elastic members 230 and 240 respectively installed at front and rear sides of the locking assembly, and the other ends of the first and second elastic members 230 and 240 are connected to the first and second brackets 21 and 22, respectively. The control stroke is realized through the first support 21, the second support 22, the first damping piece 250 and the second damping piece 260, the energy absorption is realized through the first elastic piece 230 and the second elastic piece 240, the first damping piece 250 and the second damping piece 260, and the limit and the reset of the energy absorption assembly are realized through the locking assembly, so that the controllable stroke, the repeated use and the reduction of secondary injury are realized.

The invention aims to provide protection for the personal safety of passengers in a vehicle which is in rear-end collision. When a rear-end collision accident occurs, the common seat can transmit acceleration to the body of the passenger, but due to inertia, the whole body of the passenger can incline backwards, the neck and the body can move relatively, and serious injury can be caused to the neck of the passenger.

The energy-absorbing device 20 of the seat assembly comprises an energy-absorbing bracket formed by two curved tubular beams into a first bracket 21 and a second bracket 22 and connected by a rail, a slider and an energy-absorbing assembly. The upper bent tubular beam is formed as a second bracket 22, and is fixedly connected to the seat cushion or the seat adjuster of the seat body, and the lower tubular beam is formed as a second bracket 22, and is fixedly connected to the vehicle body floor. The energy absorbing device 20, which is composed of an energy absorbing spring, a damper rod and a locking assembly, is disposed along the x-direction of the vehicle body (i.e., the front-rear direction of the vehicle body), and the mating member 210 of the locking assembly has a guide groove. The guide groove is arranged and fixed on the lower tubular beam along the x direction, and the guide rail is blocked at the guide rail ends of the upper tubular beam and the lower tubular beam to limit the forward movement of the seat body and prevent passengers from being bumped against the steering wheel to be injured. And a damping rod is added in the energy-absorbing spring to delay acceleration change, so that the whole energy-absorbing stroke is more gentle while energy absorption is assisted, and the comfort level of passengers is increased. The spring force disposed at the front should be greater than the spring force disposed at the rear to ensure that the locking mechanism is negatively displaced along the x-axis when a crash occurs.

When a rear-end collision occurs, the vehicle body drives the lower tube beam of the energy-absorbing bracket to have acceleration forwards, the passenger, the seat body and the upper tube beam of the energy-absorbing bracket can keep a motion state unchanged under the influence of inertia because the lower tube beam is not fixedly connected with the vehicle body, when energy is to be transmitted to the upper tube beam through the lower tube beam, the upper tube beam and the upper part of the upper tube beam can reversely move along the guide rail towards the x axis, and the energy-absorbing assembly arranged between the two tube beams can be stressed due to the relative motion of the upper tube beam and the lower tube beam, so that the deformation of the energy-absorbing spring and the contraction of the damping rod are caused, and the energy transmitted by the lower tube beam from the part is absorbed, so that the acceleration of the seat body and the human body is reduced. This process goes from an initial state, in which there is no relative movement between the upper and lower tubular beams, to an energy absorbing state, in which relative movement occurs, and to an end of the relative movement, and finally to a locking state for the energy absorbing device 20.

The limiting teeth 221 of the limiting member 220 in the locking assembly are formed in a wedge-shaped structure, the matching member 210 is formed as a guide tube, and a limiting groove is formed between two adjacent matching teeth 211 of the guide tube. After energy absorption is finished, the wedge-shaped structure can be clamped in the nearest limiting groove, so that the wedge-shaped structure can be locked in the limiting groove, and secondary injury to passengers caused by spring reset is prevented. The plurality of matching teeth 211 are arranged at intervals in the front-rear direction, so that the condition that the spring of the next locking groove is rebounded when the stroke is too long is avoided, and the passengers are prevented from going through a longer reset stroke, so that the user experience is poor. The locking groove formed by the matched teeth has a groove width of 4mm, 22 stages are all adopted, and the tooth width of the limiting teeth 221 is 5mm. The passenger can push the wedge structure out of the limit groove through manually pressing the reset pressing strips arranged on the upper side and the lower side of the guide tube, so that the spring is reset naturally. The process is carried out from the locking groove of the wedge-shaped structure, namely, the long-stroke rebound reset state is reached, and the upper pipe beam is reset to the initial position and is limited by the limiting structure on the lower pipe beam guide rail.

The invention aims to combine the seat mounting bracket and the tail collision energy absorbing device 20, and achieve a passive safety protection mechanism which can absorb energy by a spring, lock in place and reset afterwards when a tail collision occurs on the premise of serving as the seat bracket. The present invention can effectively provide protection for the occupant by employing an energy absorber 20 that is simple in construction, does not damage parts, and can be reused many times.

A vehicle according to an embodiment of the present invention is described below. A vehicle according to an embodiment of the present invention includes a seat assembly of a vehicle according to the above-described embodiment of the present invention.

According to the vehicle disclosed by the embodiment of the invention, the seat assembly of the vehicle disclosed by the embodiment of the invention can absorb the collision capacity when a collision accident happens, and limit the movement of the seat after absorbing energy, so that the seat is prevented from moving forwards to cause secondary injury to an occupant, and the risk of injury to the occupant and the casualties are reduced.

Other components and operations of a vehicle according to embodiments of the invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more. In the description of the invention, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by another feature therebetween.

In the description of the invention, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.

In the description of the present invention, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.

Claims (4)

1. A seat assembly for a vehicle, comprising: Seat body; An energy absorbing device (20), the energy absorbing device (20) comprising: A first bracket (21), the first bracket (21) being 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 outer side 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 comprises: 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 comprises: 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 by comprising a vehicle seat assembly according to any one of claims 1-3.