CN107891836A - Vehicle and its safety seat - Google Patents

Abstract

The invention relates to a vehicle and a safety seat thereof. The safety airbag used in the vehicle of the present invention can pop up when the vehicle hits, protect the head of the occupant all the time when the vehicle rolls over, and can also deflate the airbag manually after the vehicle rolls over and stops, compared with the traditional automatic deflation Inflated airbags, on the one hand, can provide passengers with long-term protection, preventing the vehicle from losing the protection of the passenger’s head due to the deflation of the airbag when the vehicle rolls continuously on slopes and other scenes, thereby effectively preventing the occurrence of secondary collisions. On the one hand, because the airbag is located on the side of the human head, it will not block the mouth and nose of the person, and because the airbag is deflated manually, there will be no risk of suffocation of the passenger due to fainting and the loose airbag covering the passenger's mouth and nose . The invention overcomes the technical prejudice that the airbag needs to be deflated after popping out, adopts the concept of not deflated immediately after the airbag pops up, and deflates the air manually only when it needs to be deflated.

Description

Vehicles and their safety seats

technical field

The invention relates to a vehicle and a safety seat thereof.

Background technique

The passenger safety of buses has always been the focus of automotive technology research. Due to the high center of gravity of buses and the large number of passengers, the proportion of fatalities in motor vehicle accidents ranks first. In different types of accidents, the rollover or The casualties caused by rollover accidents are the most serious. Therefore, it is of great significance to study the protection of passengers after the bus rolls over or rolls over.

The current research on rollover stability of buses includes active safety control technology and passive safety technology. Rollover prevention and control, so as to improve the rollover stability of buses; passive safety technology generally adds airbags to the seats, and when the vehicle is hit by the impact sensor to detect the impact signal, the igniter is controlled to ignite the inflator and inflate When the agent explodes, a large amount of gas is filled into the airbag, so that the airbag pops up instantly, thereby protecting the human body. However, the existing airbag will automatically deflate within a certain period of time after popping up. This setting can facilitate passengers to escape after impact. compartment, but the airbag that deflates automatically is only applicable to situations where the number of collisions is small, and it is no longer applicable to situations where the vehicle rolls down a slope and will cause the vehicle to roll continuously, because the rollover time of the vehicle falling down the slope is longer, and if the airbag automatically Deflating will cause passengers to be subjected to secondary collisions in continuous rolling, and passenger casualties cannot be avoided; in addition, there is another shortcoming for the airbags that wrap the head after inflating in the prior art, that is, the airbags are automatically deflated. After being in a relaxed state, the slack airbag may cover the mouth and nose of the person, and if the passenger faints in an accident, it may cause suffocation of the passenger.

Contents of the invention

The purpose of the present invention is to provide a safety seat that is safer and more reliable when the vehicle rolls over; the purpose of the present invention is also to provide a vehicle equipped with the safety seat.

In order to achieve the above object, the safety seat of the present invention adopts the following technical solutions:

Technical solution 1: The safety seat includes a headrest and a backrest, the headrest and/or the backrest are provided with an airbag, the airbag can automatically pop up when the vehicle is hit, and after popping up, it is located on the side of the human head. The airbag is a closed airbag. The safety airbag used in the safety seat of the present invention can pop up when the vehicle is hit, protect the head of the occupant all the time when the vehicle rolls over, and can also manually deflate the airbag after the vehicle rolls over and stops. The self-deflation airbag, on the one hand, can provide passengers with long-term protection, preventing the vehicle from losing the protection of the passenger's head due to the deflation of the airbag when the vehicle rolls continuously on slopes and other scenes, thereby effectively preventing the occurrence of secondary collisions , on the other hand, because the airbag is located on the side of the human head, it will not block the mouth and nose of the person, and because the airbag is deflated manually, it will not cause the passenger to faint and the slack airbag will cover the passenger's mouth and nose, causing the passenger to suffocate danger. The invention overcomes the technical prejudice that the airbag needs to be deflated after popping out, adopts the concept of not deflated immediately after the airbag pops up, and deflates the air manually only when it needs to be deflated.

Technical solution 2: On the basis of technical solution 1, the safety airbag is provided with a manual deflation structure for manual deflation after the vehicle rolls and stops.

Technical solution 3: On the basis of technical solution 2, the airbag is located in the backrest. The space in the backrest is large, which can facilitate the setting of the air bag inflation device or generating device.

Technical solution 4: On the basis of technical solution 3, the outlet of the airbag on the backrest is located at the shoulder of the human body. Setting the outlet of the airbag on the shoulder can facilitate the airbag to be directly located on the head of the human body when it pops up, so as to protect the head of the human body safely.

Technical solution 5: On the basis of any one of technical solutions 1-4, there are two airbags, which are symmetrically arranged on both sides of the safety seat.

Vehicle of the present invention adopts following technical scheme:

Technical Solution 1: The vehicle includes a compartment and a safety seat installed in the compartment. The safety seat includes a headrest and a backrest. The headrest and/or the backrest are provided with an airbag, and the airbag can be automatically ejected when the vehicle is hit. And after being ejected, it is positioned at the side of the head of the human body, and the airbag is a closed airbag. The safety airbag used in the vehicle of the present invention can be popped up when the vehicle hits, protects the head of the occupant all the time when the vehicle rolls over, and can also deflate the airbag manually after the vehicle rolls over and stops, compared with the traditional automatic deflation Inflated airbags, on the one hand, can provide passengers with long-term protection, preventing the vehicle from losing the protection of the passenger’s head due to the deflation of the airbag when the vehicle rolls continuously on slopes and other scenes, thereby effectively preventing the occurrence of secondary collisions. On the one hand, because the airbag is located on the side of the human head, it will not block the mouth and nose of the person, and because the airbag is deflated manually, there will be no risk of suffocation of the passenger due to fainting and the loose airbag covering the mouth and nose of the passenger . The invention overcomes the technical prejudice that the airbag needs to be deflated after popping out, adopts the concept of not deflated immediately after the airbag pops up, and deflates the air manually only when it needs to be deflated.

Technical solution 2: On the basis of technical solution 1, the safety airbag is provided with a manual deflation structure for manual deflation after the vehicle rolls and stops.

Technical solution 3: On the basis of technical solution 2, the airbag is located in the backrest. The space in the backrest is large, which can facilitate the setting of the air bag inflation device or generating device.

Technical solution 4: On the basis of technical solution 3, the outlet of the airbag on the backrest is located at the shoulder of the human body. Setting the outlet of the airbag on the shoulder can facilitate the airbag to be directly located on the head of the human body when it pops up, so as to protect the head of the human body safely.

Technical solution 5: On the basis of any one of technical solutions 1-4, there are two airbags, which are symmetrically arranged on both sides of the safety seat.

Technical solution 6: On the basis of technical solution 5, the vehicle further includes a signal detection unit that detects the loading of each wheel of the vehicle and feeds back the detection results to the control system for analysis.

Technical solution 7: On the basis of technical solution 6, the signal detection unit includes a vehicle speed sensor, a rotation angle sensor, a roll angle sensor, a yaw rate measuring instrument and a wheel load sensor.

Description of drawings

Fig. 1 is a schematic structural view of the safety seat in a specific embodiment of the vehicle of the present invention; it is also a schematic view of the working state of the safety seat when the vehicle collides;

Fig. 2 is a schematic diagram of a non-working state of the safety seat in Fig. 1 when no vehicle collision occurs;

In the figure: 1-backrest, 2-headrest, 3-safety air bag, 4-telescopic rod, 41-tray, 5-roof, 6-telescopic rod driving mechanism.

Detailed ways

Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

A specific embodiment of the vehicle of the present invention, the vehicle includes a compartment, the vehicle of this embodiment refers to a bus, and a plurality of safety seats are installed side by side in the compartment of the vehicle, as shown in Figures 1 and 2, the safety seat includes a backrest 1 , headrest 2 and seat cushion, etc., the safety seat is fixed on the compartment floor through the lower part, and the headrest 2 has a certain distance from the roof 5, as shown in Figure 2. The headrest 2 is installed on the top of the backrest 1, and is fixed relative to the backrest 1, and the backrest 1 is also fixed after the angle is adjusted. The headrest 2 is provided with a telescopic rod 4, and the telescopic rod 4 realizes the telescopic movement toward or away from the direction of the roof 5 under the control of the telescopic drive mechanism 6 provided in the backrest 1 . The telescopic drive mechanism 6 can be a pneumatic telescopic mechanism, and the telescopic rod 4 is a sleeve sleeve, and the telescopic rod 4 can be stretched out as soon as possible by means of blasting when adopting the pneumatic mode. The outer end of telescoping rod 4 is provided with tray 41, so that roof 5 has bigger supporting area, when telescoping rod 4 is retracted in the headrest 2, tray 41 sinks in the tray 41 grooves of headrest 2 tops, guarantees The smoothness of the upper surface of the headrest 2. When the telescopic rod 4 stretches out of the headrest 2 and cooperates with the roof 5, in order to maintain the supporting state, the support mechanism also includes a locking mechanism, which can be a lock pin or a blocking rod.

There are also two symmetrical safety airbags 3 hidden in the backrest 1. The safety airbags 3 can be exploded in an instant when the vehicle collides, and are located on both sides of the shoulders and head of the passenger after deployment, preventing the passenger from rolling over when the vehicle rolls over. In the event of secondary accidents such as collisions between heads, the airbag 3 has a flat circular structure, similar to a circular seat cushion, and the side of the airbag 3 close to the face can also be provided with a slight depression, so that the head can be better protected. protection. The airbag 3 can maintain the inflated state for a long time without deflation, so as to prevent the secondary accident of the passenger caused by the vehicle rolling for a long time and the airbag 3 automatically deflated too quickly. When the vehicle rolls to stop, the occupant needs to leave the compartment The deflation rope on the airbag can be manually pulled. When the deflation rope is pulled, the plug of the air outlet on the airbag can be opened to deflate the airbag, and the size of the airbag can be set larger to facilitate the realization of the airbag. The rapid deflation of the airbag saves the escape time of the occupants. Since the airbag adopts the manual deflation method, compared with the traditional automatic deflation airbag, it can prevent the airbag from being in a relaxed state after deflation and covering the mouth and nose of the human body. In terms of the passenger's fainting situation, it may cause the passenger to suffocate; on the other hand, since the airbag 3 is located at both sides of the head, it will not block the passenger's mouth and nose, so it will not cause the danger of human suffocation.

The vehicle also includes a control system and a signal detection unit. The signal detection unit includes a vehicle speed sensor, a rotation angle sensor, a roll angle sensor, a yaw rate measuring instrument, and a wheel load sensor, etc., which can transmit measurement signals to the control system. The control system presets a large The rollover or rolling threshold R of the bus, the control system can directly obtain the roll angle and yaw rate of the bus according to the information of the bus speed, front wheel rotation angle, roll angle, yaw rate and different wheel loads detected by the signal detection unit in real time, Measure the parameters such as the lateral acceleration of the bus and the lateral load transfer rate, so as to calculate the rollover risk coefficient Rn of the bus (the expression of Rn is composed of various parameters of the bus), compare Rn with the system preset value, and judge the Whether there is a rollover or rollover danger in the passenger car, the safety seat will only be activated when it is judged that it occurs, and the telescopic rod 4 is stretched out, and the safety air bag 3 is ejected.

During the use of the vehicle of the present invention: when there is no accident in the vehicle, as shown in Figure 2, the roof 5 is in a normal state, and the distance from the top of the head is far away, and the telescopic rod 4 of the safety seat and the safety air bag 3 are all in a hidden state ; When the vehicle rolls over or rolls over, the signal detection unit can directly obtain the roll angle and yaw rate of the bus through the real-time detection of vehicle speed, front wheel angle, roll angle, yaw rate and different wheel loads, and measure the maximum The parameters such as the lateral acceleration of the bus and the lateral load transfer rate are used to calculate the rollover risk factor Rn of the bus (the expression of Rn is composed of various parameters of the bus), and the Rn is compared with the system preset value to judge whether the bus is overturned. When the passenger car rolls over or rolls over, the control system sends a control command to control the two airbags 3 on both sides of the head to burst out instantly, as shown in Figure 1, to protect the head of the human body, and the airbag 3 is always on. The inflated state can protect the head of the human body for a long time, which is of great significance for the vehicle to roll over for a long time such as falling down a slope; The tray 41 at the outer end of the bar 4 cooperates with the top support of the roof 5, thereby supporting a safe space for the driver or the passenger's head, preventing the roof 5 from being crushed and hurting the personnel's head.

In other embodiments, the vehicle refers to any vehicle with at least two occupants; the telescopic rod and the telescopic drive mechanism can also be replaced by a mechanism that can drive the telescopic tray such as a motor-screw nut pair or a linear motor; it can also be replaced by a hydraulic Drive mode: the telescopic rod can also be extended directly from the backrest, for example, a telescopic rod-tray that can extend toward the roof direction can be set on the upper part of the two sides of the backrest, that is, the two sides of the headrest, etc. The driving mechanism is still located inside the backrest; the airbag can also be located inside the headrest, or both the headrest and the backrest can be provided with an airbag; there can also be only one airbag, which extends from the side of the human head along the top of the head at the same time when popping up To the other side of the head, an airbag can also be set only on one side of the human head to protect this side; the airbag can also be in the shape of a spherical or flat rectangle; It can be replaced with a telescopic frame or a telescopic plate, etc.; the tray can be used as a top support, or it can be replaced with any other non-sharp structure such as a claw, a hollow plate, etc., so as to better support the roof; The deflated structure can also be replaced by puncturing the airbag to deflate or set tear marks on the edge of the airbag to tear the airbag apart; the drawstring can also be replaced by a pull ring.

The specific embodiments of the safety seat of the present invention are the same as those of the safety seat in the various embodiments of the vehicle of the present invention, and will not be repeated here.

Claims (10)

1. safety seat, including headrest and backrest, it is characterized in that, it is provided with air bag, substitute in the headrest and/or backrest Capsule can when vehicle is hit automatic spring and eject after be in human body head side, the air bag for closing gas Capsule.

2. safety seat according to claim 1, it is characterized in that, air bag is provided with manual deflation structure with vehicle Rolling is deflated manually after stopping.

3. safety seat according to claim 2, it is characterized in that, air bag is located in backrest.

4. safety seat according to claim 3, it is characterized in that, on backrest the outlet of air bag be located at shoulders of human body.

5. according to the safety seat described in claim 1-4 any one, it is characterized in that, air bag has two, respectively symmetrically It is arranged in the both sides of safety seat.

6. vehicle, including compartment and the safety seat in compartment, safety seat includes headrest and backrest, it is characterized in that, Air bag is provided with the headrest and/or backrest, air bag can be located when vehicle is hit after automatic spring and ejection In the side of human body head, the air bag is closed airbag.

7. vehicle according to claim 6, it is characterized in that, air bag is provided with manual deflation structure with vehicle rollover Deflated manually after stopping.

8. vehicle according to claim 7, it is characterized in that, air bag is located in backrest.

9. vehicle according to claim 8, it is characterized in that, on backrest the outlet of air bag be located at shoulders of human body.

10. according to the vehicle described in claim 6-9 any one, it is characterized in that, air bag has two, respectively symmetrically arranges In the both sides of safety seat.