WO2022267859A1

WO2022267859A1 - Automobile seat and spinal support device for automobile seat

Info

Publication number: WO2022267859A1
Application number: PCT/CN2022/096886
Authority: WO
Inventors: 刘崇庆
Original assignee: 延锋国际汽车技术有限公司
Priority date: 2021-06-25
Filing date: 2022-06-02
Publication date: 2022-12-29
Also published as: CN115520133A

Abstract

An automobile seat and a spinal support device for an automobile seat, the spinal support device comprising: a support body (1), wherein one end of the support body (1) is connected to an automobile seat (4), and the other end of the support body (1) extends from the automobile seat (4) to the armpits of a passenger and is used for supporting the armpits of the passenger; in a normal ride sitting posture, the support body (1) of the spinal support device can be lifted or turned up to support the armpits of the passenger so as to reduce a pressure on a spine; when the passenger is in a working sitting posture and a leisure sitting posture, the spinal support device can make up for the lack of restraint on the passenger along a backrest of the seat; by means of the underarm support, the pressure on the spine can be reduced, and the ride comfort can be improved; and when a frontal collision or a side collision occurs, the spinal support device can improve a motion posture of the passenger, thereby relieving the pressure on the spine, and improving the safety of the passenger.

Description

Car seat and spinal support device for car seat

technical field

The present invention relates to a car seat and a spinal support device for a car seat.

Background technique

Currently in the art, the seat back of a car seat can be adjusted according to the riding habits of the occupant during normal use. In the existing safety code test, the seat back can be adjusted to the design position (generally about 25 degrees relative to the vertical position), and the crash dummy is used for the test, and the damage evaluation is performed on the crash dummy. In the actual use of the car seat, the seat back may not be adjusted at the design position during the actual collision. For example, during the collision, the occupant may be lying or half lying on the seat. The occupant's spine will be subject to severe pressure and injury may result.

With the development of car intelligence, automatic driving or unmanned driving technology, the driver in the car, especially the passenger on the passenger side, has more possible sitting postures. Generally, the sitting posture can be classified into three kinds, 1) normal driving posture, 2) working posture, and 3) leisure sitting posture. Specifically, in a normal driving posture, the occupant can fully pay attention to the driving condition of the vehicle. The design position of the seat back is generally about 25 degrees. In the working sitting position, the occupants can work or entertain in the vehicle without paying attention to the driving conditions of the vehicle, and the seat back can be adjusted to about 45 degrees relative to the vertical position. In the casual sitting posture, the driver and passengers can completely ignore the driving of the vehicle and rest with their eyes closed, and the seat back can be adjusted to an angle of 60 degrees or even greater relative to the vertical position.

In the working or leisure sitting position (semi-lying or fully reclining sitting position), when the vehicle collides frontally, the torso of the occupant slides down along the seat back due to inertia, and the seat pan of the car seat supports the occupant. At the same time, The lap belt of the safety belt on the car seat restrains the occupant's pelvis, which may cause movement and compression between the occupant's upper torso and pelvis toward each other. Existing research and trials have shown that such a condition can lead to compression of the spine that can predispose to irreversible and even life-threatening injuries.

In the prior art solution, in the car seat, except that the seat pan supports the occupant's pelvis, the seat back only supports the occupant's torso in the direction perpendicular to the seat back, and along the seat back basically There is no additional support structure for the torso.

Contents of the invention

The technical problem to be solved by the present invention is to provide a car seat and a spine support device for the car seat in order to overcome the defect that the car seat in the prior art is difficult to protect the occupant's spine during a collision .

The present invention solves the above technical problems through the following technical solutions:

A spinal support device for a car seat, characterized in that the spinal support device includes: a support body, and the support body is configured to connect one end of the support body to the seat back of the car seat connected, and the support body extends from the seat back of the car seat to the occupant's armpit and is used to support the occupant's armpit.

Preferably, the support body of the spinal support device is liftable or flippable. In this solution, in the case of adopting the above-mentioned structural form, in the normal driving posture, the support body of the spinal support device can be lifted or turned up to support the underarms of the occupant, so as to relieve the pressure on the spine. When the occupant is in the working sitting position (semi-lying) and leisure sitting (full lying), the spinal support device can make up for the occupant's lack of restraint along the back of the seat. Among them, the support of the armpit can reduce the pressure on the spine and improve the driving experience. At the same time, when a frontal or side collision occurs, the spine support device can improve the occupant's movement posture, relieve the pressure on the spine, and improve the safety of the occupant.

Preferably, the spinal support device may further include an adjustment part, and the adjustment part is configured such that one side of the adjustment part is connected to the seat back of the car seat, and the other side of the adjustment part The support body is connected to the side, and the support body can move on the car seat through the adjustment part, so as to adjust the distance between the support body and the underarm of the occupant.

In this solution, in the case of adopting the above-mentioned structural form, it is beneficial for the occupant to obtain a more comfortable support effect, and at the same time, it is beneficial for the spine support device to meet the support requirements of occupants of different shapes and sizes.

Preferably, the adjustment part may include an adjustment body and an adjustment track, the adjustment track is configured to be connected with the seat back of the car seat, the adjustment body is slidably connected to the adjustment track, and The one end of the support body is fixedly connected with the adjustment body.

In this solution, in the case of adopting the above-mentioned structural form, the spinal support device can change the distance between the support body and the occupant’s armpit by sliding the adjustment body on the adjustment track. The structure is simple, easy to manufacture, and can meet the actual adjustment needs of the occupants.

Preferably, the adjusting part may include a locking mechanism, and the locking mechanism is configured to fix the supporting body on the adjusting part when the supporting body supports the underarm of the occupant. corresponding position.

In this solution, in the case of adopting the above structural form, the locking mechanism can position the support body so that the support body is not easy to slip when it bears a certain load and is in a supporting state, so that the occupants can obtain certain support during use. force.

Preferably, the locking mechanism and the supporting body are configured such that when the locking mechanism fixes the supporting body, when the pressure on the supporting body is greater than a set value, the The supporting body can slide or deform, and the supporting body can continue to support the occupant's armpit along with the sliding or deforming.

In this solution, in the case of adopting the above-mentioned structural form, such a design of the supporting body can not only provide sufficient supporting force for the occupants, but also have a certain energy-absorbing effect, wherein the supporting body can absorb energy by sliding or deforming. Protect the occupant's spine from excessive pressure on the occupant's spine.

Preferably, the spinal support device may further include a damping component or a deformable mechanism, the damping component or deformable mechanism acts on the support body, and when the pressure on the support body is greater than a set value, The support body can slide on the car seat or can be deformed.

In the case of adopting the above-mentioned structural form, during the process of the support body sliding or deforming downward, the damping part or the deformable mechanism can provide a certain resistance for the support body and play an energy-absorbing role, and is used to absorb the movement of the occupant's torso along the The pressure on the spine when the seat back moves downward protects the spine of the occupant.

Preferably, the number of the supports is two, and the two supports are respectively a first support and a second support, and in the width direction of the car seat, the first support and the One side of the seat back of the car seat is connected, the second support body is connected with the other side of the seat back of the car seat, and the first support body and the second support body are respectively Extending to and supporting respective underarms of the occupant.

In this solution, in the case of adopting the above-mentioned structural form, during use, the first support body and the second support body can move on the corresponding adjustment parts respectively, so as to meet the different support functions of the underarms on both sides of the occupant. need. Such a design of the support body enables the occupant to independently adjust the two support bodies on the underarms on both sides, which is beneficial to meet the different support requirements of the underarms on both sides of different occupants.

Preferably, the support body is movably connected to the seat back of the car seat and has a first state and a second state; in the first state, the protruding end of the support body extends from the car seat The seat back of the seat extends to and supports the underarm of the occupant; in the second state, the protruding end of the supporting body retracts out of the underarm of the occupant .

In this solution, in the case of adopting the above-mentioned structural form, the occupant can switch the state of the support body according to the actual situation. When the angle between the seat back of the car seat and the vertical direction is too large, the occupant can Turn up the support body according to its own actual situation, so that the support body is supported on the underarms on both sides of the occupant, that is, the support body enters the first state at this time; when the seat back of the car seat and the vertical direction When the included angle is small, the occupant can choose to turn up the support body to make the support body enter the first state, or also choose to fold the support body on both sides of the car seat to make it in the second state. The support body can be switched according to the actual situation, and this design makes the use of the support body more convenient and flexible.

Preferably, the material of the support body can be plastic material or elastic material.

In this scheme, when the above-mentioned structural form is adopted, when the vehicle undergoes a lateral collision, when the pressure on the occupant exceeds the force value that the human body can bear, the support body will absorb the occupant through the plastic deformation or elastic deformation of the material. kinetic energy, which can improve the restraint posture of the occupant. In the case of the cooperation of side airbags, remote airbags and air curtains, occupant injuries can be further reduced.

Preferably, the spinal support device may further include a soft package, and the soft package is covered on the support body.

In this solution, in the case of adopting the above-mentioned structural form, the soft package not only enables the occupant to have a better support experience under the armpit, but also can be fully deformed when the soft package is stressed, so that it has a good relationship with the underarm of the occupant. Better fitting effect can form better protection for the occupant during the collision.

A car seat, characterized in that the car seat adopts the aforementioned spine support device for car seats.

In this solution, a spine support device is installed on the car seat. When the vehicle has a frontal collision, especially when the angle of the seat back relative to the vertical position is relatively large, such as in a working or leisure sitting position At this time, the occupant will slide down along the seat back under the action of inertial force, and the support body under the armpit will support the occupant during the process of sliding down. In some embodiments, when the pressure on the support body exceeds a set value, the support body will deform plastically or elastically to absorb the inertial force on the occupant's upper torso and relieve the pressure on the occupant's spine. In some embodiments, similarly, in the event of a side collision of the vehicle, the supporting body will also be plastically or elastically deformed to maintain the posture of the upper torso, which can reduce the impact caused by the side airbag, the remote airbag and the air curtain. Injuries resulting from a collision.

Preferably, the inclination angle of the seat back of the car seat can be adjusted correspondingly to the following occupant sitting posture:

-Normal driving posture;

- Working posture;

-Casual sitting position.

Preferably, in the normal driving posture, the seat back has a first angle of no more than 25° relative to the upright position; in the working sitting posture, the seat back has a second angle of 40°-50° relative to the upright position; In the casual sitting position, the seat back has a third angle of more than 50° relative to the upright position.

Preferably, the support body is configured to, in the casual sitting position, support the occupant's respective underarms in the event of a frontal collision of the motor vehicle, restrict the occupant's upper torso from sliding down the seat back, and thus limit The load on the occupant's spine due to said downward slide.

Preferably, said support body is configured to restrain the occupant's respective underarms, restricting the occupant's upper torso downwards along the seat back, in the event of a frontal collision of the motor vehicle, both in the work sitting position and in the leisure sitting position slide, and thus limit the load on the occupant's spine due to said downward slide.

On the basis of conforming to common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain preferred examples of the present invention.

In some embodiments, the positive progressive effects of the present invention may lie in:

In the case of the spine support device for car seats according to the present invention, in the normal driving posture, the support body of the spine support device can be lifted or turned up to support the underarms of the occupant to relieve the pressure on the spine ; When the occupants in the car are in the working sitting position (semi-lying) and leisure sitting (full lying) states, the spinal support device can make up for the occupant's lack of restraint along the seat back, wherein, through the support of the armpit, the pressure on the spine can be reduced, Improve driving comfort; at the same time, when a frontal or side collision occurs, the spinal support device can improve the movement posture of the occupant, relieve the pressure on the spine, and improve the safety of the occupant.

Description of drawings

Fig. 1 is a schematic diagram of a car seat according to an embodiment of the present invention when the occupant is in a casual sitting position.

Fig. 2 is a schematic diagram of the car seat of the embodiment of the present invention when the occupant is in a casual sitting position, wherein the schematic diagram of the structure of the support body being adjusted up and down along the seat back is shown.

Fig. 3 is a schematic structural view of the supporting body according to the embodiment of the present invention when it is supported under the occupant's armpit.

detailed description

In the following, the present invention will be more clearly and completely described by means of embodiments in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the embodiments.

An embodiment of the present invention provides a spinal support device for a car seat 4 . As shown in Fig. 2 and Fig. 3, the spinal support device comprises: a support body 1, one end of the support body 1 is connected with the seat back of the car seat 4, and the support body 1 extends from the seat back of the car seat 4 to the occupant and used to support the occupant's underarm, wherein the other end of the support body 1 is located under the occupant's armpit. In FIG. 1 , the support body 1 is hidden, wherein the support body 1 is in a folded state and thus in a non-working state.

In the case of adopting the above-mentioned structural form, the spine support device can be installed on the frame of the seat back of the car seat 4, the spine support device can include a rod-shaped support body 1, one end of the support body 1 is a fixed end, and the The support body 1 is fixedly connected with the car seat 4 , and the other end of the support body 1 is a moving end, so that the support body 1 can move relative to the car seat 4 . When the spinal support device is in a non-working state, the two support bodies 1 can be folded on both sides of the car seat 4 (in the width direction of the car seat), so that it does not affect the activities of the occupants in the car. When the spinal support device should be in working condition, the occupant lifts or turns up the support body 1 by adjusting the moving end of the support body 1, so that the support body 1 extends from both sides of the car seat 4 to the underarms on both sides of the occupant, Wherein, the position of the supporting body can be adjusted according to the body shape of the occupant. In the normal driving posture, the support body 1 of the spinal support device can be lifted or turned up to support the underarm of the occupant to relieve the pressure on the spine; In the state of lying down), the spinal support device can make up for the occupant's lack of restraint along the seat back, among which, through the support of the underarms, the pressure on the spine can be reduced and the comfort of driving can be improved; at the same time, when a frontal or side collision occurs, The spinal support device can improve the movement posture of the occupant, relieve the pressure on the spine, and improve the safety of the occupant.

As a preferred embodiment, as shown in Figure 2, the spinal support device may further include an adjustment part 2, one side of the adjustment part 2 is connected with the car seat 4, and the other side of the adjustment part 2 is connected with a support body 1, and the support body 1 can move on the car seat 4 through the adjustment part 2, so as to adjust the distance between the support body 1 and the underarm of the occupant.

In the case of adopting the above structure, one side of the adjustment part 2 of the spinal support device can be fixedly connected with the frame of the seat back of the car seat 4, and the other side of the adjustment part 2 is installed with the support body 1 . When the spinal support device enters the working state, the occupant passes one end (moving end) of the support body 1 through the underarms on both sides, so that the support body 1 abuts against the occupant's armpits, while the other end (fixed end) of the support body 1 ) can slide on the adjustment part 2 to adjust the distance between the support body 1 and the underarm of the occupant, which is beneficial to enable the occupant to obtain a more comfortable support effect, and at the same time facilitates the spinal support device to meet different body shapes and different The support needs of a stature occupant.

As a preferred embodiment, as shown in Figure 2, the adjustment part 2 can include an adjustment body and an adjustment track 21, the adjustment track 21 is connected with the backrest of the car seat 4, the adjustment body is slidably connected with the adjustment track 21, and supports One end of the body 1 is fixedly connected with the adjustment body, and the support body 1 extends from the car seat 4 to the occupant's armpit.

In the case of adopting the above-mentioned structural form, an adjustment track 21 is provided in the adjustment part 2, and the adjustment track 21 is connected with the seat back of the car seat 4, and an adjustment body is installed on the adjustment track 21, and the adjustment body can be placed on the adjustment track. 21, the adjustment body is fixedly connected with one end of the support body 1, and the other end of the support body 1 extends to the occupant's armpit. The distance between the armpits. With such a design, the adjustment part 2 has a simple structure, is easy to manufacture, and can meet the actual adjustment needs of the occupants.

As a preferred embodiment, the adjustment part 2 may further include a locking mechanism, which is used to fix the support body 1 to the corresponding position on the adjustment part 2 when the support body 1 supports the underarm of the occupant. .

In the case of adopting the above-mentioned structural form, the adjustment part 2 is also equipped with a locking mechanism. When the occupant puts the support body 1 against the armpit and adjusts it to a proper position, the adjustment body fixedly connected to one end of the support body 1 will Also move to a suitable position on the adjustment track 21 , the locking mechanism positions the adjustment body so that the adjustment body is fixed on the adjustment track 21 , so that the locking mechanism fixes the support body 1 to a specific position on the adjustment part 2 . Through the positioning effect of the locking mechanism on the support body 1 , the support body 1 is not easy to slip when it bears a certain load and is in a support state, so that the occupant can obtain a certain support force in the process of using the support body 1 .

As a preferred embodiment, the locking mechanism fixes the support body 1. When the pressure value on the support body 1 is greater than the set value, the support body 1 will slide or deform, and the support body 1 will follow the sliding or deformation. Continue to support the underarm of the occupant.

In the case of adopting the above structure, when the occupant puts the supporting body 1 against the armpit and adjusts it to a proper position, the spinal support device positions the adjusting body through the locking mechanism, so that the locking mechanism can fix the supporting body 1 at a specific position on the adjustment part 2. At the same time, due to the structural form and material selection of the support body 1 , the pressure bearing value of the support body 1 can be set. When the pressure on the support body 1 is less than the set pressure bearing value, the support body 1 can provide sufficient support for the occupant, but when the vehicle collides, in order to prevent the support body 1 from providing the occupant with a support force greater than The range that the occupant can bear, when the pressure value received by the support body 1 exceeds the set pressure tolerance value, the support body 1 will slide down or deform, thereby absorbing the pressure of the occupant when moving downward along the seat back. The pressure on the spine protects the occupant's spine. Such a design of the support body 1 can not only provide enough support for the occupant, but also have a certain energy-absorbing effect, wherein the support body 1 absorbs the excessive pressure on the occupant's spine by sliding or deforming, and has a negative impact on the occupant. The spine is protected.

As a preferred embodiment, the spinal support device further includes a damping component or a deformable mechanism, and the damping component or deformable mechanism acts on the support body 1 . Through the damping component or the deformable mechanism, when the pressure on the support body 1 is greater than a set value, the support body 1 slides or deforms on the car seat 4 .

A damping component is arranged inside the spine supporting device, and the damping component or the deformable mechanism is fixedly connected with the adjustment body. After the support body 1 is adjusted to a specific position, the support body 1 is positioned on the adjustment track 21 through a damping component or a deformable mechanism. When the vehicle collides, when the pressure value received on the support body 1 is greater than the set value, the support body 1 slides or deforms downward on the car seat 4 under the pressure, and slides or deforms on the support body 1 During the process, the damping part or the deformable mechanism provides a certain resistance for the support body 1, plays an energy-absorbing role, and is used to absorb the pressure on the spine when the occupant moves downward, and protects the occupant's spine.

As a preferred embodiment, as shown in Figure 3, the number of support bodies 1 is two, and the two support bodies 1 are respectively the first support body 11 and the second support body 12, in the width direction of the car seat Above, the first support body 11 is connected to one side of the car seat 4, the second support body 12 is connected to the other side of the car seat 4, and the first support body 11 and the second support body 12 respectively extend to the occupant and support the corresponding underarms of the occupant.

In the case of adopting the above-mentioned structural form, there is a pair of support bodies 1, that is, the first support body 11 and the second support body 12, and the first support body 11 and the second support body 12 are correspondingly arranged on both sides of the car seat 4 One end of the first support body 11 and the second support body 12 are fixedly connected to the car seat 4, and the other ends of the first support body 11 and the second support body 12 respectively extend to the armpit on the side corresponding to the occupant. and support the underarms of the occupants on the corresponding side respectively. During use, the first support body 11 and the second support body 12 can respectively move on the corresponding adjustment parts 2, so as to meet the different support requirements of the underarms on both sides of the occupant. The design of the support body 1 enables the occupant to individually adjust the support body 1 on both sides of the armpit, which is beneficial to meet the different support requirements of different occupants on both sides of the underarm.

As a preferred embodiment, the support body 1 is movably connected to the car seat 4 and has a first state and a second state; in the first state, the protruding end of the support body 1 extends from the car seat 4 to the occupant The underarm of the occupant, and supports the occupant's underarm; in the second state, the protruding end of the support body 1 retracts out of the occupant's underarm, and thus the support body 1 is in a non-working state.

In the case of adopting the above-mentioned structural form, the support body 1 has a first state and a second state. When the angle between the seat back of the car seat 4 and the vertical direction changes, the occupant can switch the state of the support body 1 according to the actual situation. For example, when the angle between the seat back of the car seat 4 and the vertical direction is greater than 40 degrees, the occupant can turn up the support body 1 according to his own actual situation, and the support body 1 will be lifted from the car seat 4 both sides. Extending to the underarms on both sides of the occupant to support the underarms on both sides of the occupant, that is, the support body 1 enters the first state at this time. When the angle between the seat back of the car seat 4 and the vertical direction is less than 40 degrees, the occupant can choose to turn up the support body 1 to make the support body 1 enter the first state, or can choose to turn the support body 1 is folded on both sides of the car seat 4 so that it is in the second state. The state of the support body 1 can be switched according to the actual situation, and such a design makes the use of the support body 1 more convenient and flexible.

As a preferred embodiment, the material of the support body 1 is plastic material or elastic material.

In the case of adopting the above-mentioned structural form, the material of the support body 1 is made of plastic material or elastic material, which not only makes the structure of the support body 1 more portable, but also the spine support device can effectively restrain the occupants when the vehicle collides sideways, preventing the occupants from Side impact in the car. Likewise, spinal supports can absorb energy during lateral restraint. When the lateral force exceeds the force value that the human body can bear, the support body 1 will absorb the kinetic energy of the occupant through plastic deformation or elastic deformation of the material, which can improve the restraint posture of the occupant. In the case of side airbags, remote airbags, and air curtains, the damage to the occupants is further reduced.

As a preferred embodiment, the spinal support device may further include a soft package, and the soft package is covered on the support body 1 .

In the case of adopting the above-mentioned structural form, the support body 1 is coated with a soft package, and when the support body 1 abuts against the occupant's armpit, the soft package on the support body 1 is in contact with the occupant's armpit, and the soft package Not only can the underarm of the occupant have a better support experience, but at the same time, the soft package can be fully deformed when it is stressed, so that it has a better fit effect with the underarm of the occupant, and can form a better shape for the occupant during the collision. protection of.

An embodiment of the present invention provides a car seat 4, as shown in Figs. 1-3, the car seat 4 adopts the aforementioned spinal support device for the car seat 4.

In the case of adopting the above-mentioned structural form, a spine supporting device is installed on the car seat 4 . When the vehicle is in a frontal collision, especially when the angle of the seat back is relatively large relative to the vertical position, such as in a working or leisure sitting position, the occupant will move toward the seat back in the direction of the seat back under the action of inertia Sliding down, the support body 1 under the armpit plays a supporting role for the occupant in the process of sliding down the occupant. In some embodiments, when the pressure on the support body 1 exceeds a set value, the support body 1 will deform plastically or elastically to absorb the inertial force on the occupant's upper torso and relieve the pressure on the occupant's spine. In some embodiments, similarly, when a side collision occurs to the vehicle, the supporting body 1 will also be plastically or elastically deformed to maintain the posture of the upper torso, and can reduce the Injuries resulting from secondary collisions.

Although the specific implementation of the present invention has been described above, those skilled in the art should understand that this is only an example, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

List of reference signs:

1 support body

11 The first support body

12 Second support body

2 Regulator

21 Adjustment track

3 seat belts

4 car seats

Claims

A spinal support device for a car seat, characterized in that the spinal support device comprises:

a support body, the support body is configured to be connected to the seat back of the car seat with one end of the support body, and the support body extends from the seat back of the car seat to the armpit of the occupant and for supporting the underarms of the occupant.
The spinal support device for a car seat according to claim 1, wherein the spinal support device further comprises an adjustment part, and the adjustment part is configured such that one side of the adjustment part is connected to the car seat. The seat back of the seat is connected, the other side of the adjustment part is connected with the support body, and the support body can move on the car seat through the adjustment part, so as to adjust the support The distance between the body and the underarm of the occupant.
The spinal support device for a car seat according to claim 2, wherein the adjustment part comprises an adjustment body and an adjustment track, and the adjustment track is configured to be used with the seat back of the car seat The adjustment body is slidably connected to the adjustment track, and the one end of the support body is fixedly connected to the adjustment body.
The spinal support device for a car seat according to claim 2, wherein the adjusting part includes a locking mechanism, and the locking mechanism is configured to, under the armpit of the occupant on the support body, When supporting, the supporting body is fixed at a corresponding position on the adjusting part.
The spinal support device for a car seat according to claim 4, wherein the locking mechanism and the supporting body are configured such that when the locking mechanism fixes the supporting body, when When the pressure on the support body is greater than a set value, the support body can slide or deform, and the support body can continue to support the occupant's armpit along with the slide or deformation.
The spinal support device for a car seat according to claim 2, wherein the spinal support device further comprises a damping component or a deformable mechanism, and the damping component or a deformable mechanism acts on the support body, When the pressure on the supporting body is greater than a set value, the supporting body can slide on the car seat or deform.
The spinal support device for a car seat according to claim 1, wherein the number of said support bodies is two, and the two support bodies are a first support body and a second support body. In the width direction of the seat, the first support body is configured to be connected to one side of the seat back of the car seat, and the second support body is configured to be connected to the side of the car seat. The other side of the seat back is connected, and the first support body and the second support body are respectively configured to extend to and support the corresponding underarms of the occupant .
The spinal support device for a car seat according to claim 1, wherein the support body is configured to be movably connected to the seat back of the car seat and has a first state and a second state ;

In the first state, the protruding end of the supporting body extends from the seat back of the car seat to the underarm of the occupant, and supports the underarm of the occupant;

In the second state, the protruding end of the support body retracts out of the occupant's armpit.
The spine supporting device for a car seat according to claim 1, wherein the material of the supporting body is a plastic material or an elastic material.
The spinal support device for a car seat according to claim 1, wherein the spinal support device further comprises a soft package, and the soft package is covered on the support body.
The spine support device for a car seat according to claim 1, wherein the support body can be folded and turned up from the folded state, wherein, in the turned up state, the support body can be lifted from the The seat back of the car seat extends to and serves to support the occupant's underarms.
A car seat, characterized in that the car seat comprises the spine supporting device for a car seat according to any one of claims 1-11.
The car seat according to claim 12, wherein the inclination angle of the seat back of the car seat can be adjusted correspondingly to the following occupant sitting posture:

-Normal driving posture;

- Working posture;

-Casual sitting position.
The car seat of claim 13, wherein the support body is configured to support the occupant's corresponding underarms and limit the occupant's upper torso along the The seat back slides downward, and thus limits the load on the occupant's spine due to said downward slide.
The car seat of claim 13, wherein the support body is configured to restrain the corresponding underarms of the occupant, restricting the The occupant's upper torso slides down the seat back and thus limits the load on the occupant's spine due to said downward sliding.