Front seat provided with airbag

Abstract

The invention discloses a front seat provided with an airbag on a car. The left and right ends of a bevel gear shaft are coaxially and fixedly connected with rotating shafts at the bottom of a backrest, the left end of the bevel gear shaft is coaxially sleeved with a bevel gear wheel, the lower end of a transmission shaft is coaxially sleeved with a bevel pinion meshed with the bevel gear wheel, the upper end of the transmission shaft penetrates through a crossbeam upwards and is coaxially and fixedly connected with a screw rod, a left slide block and a right slide block can slide vertically along corresponding U-shaped slide grooves in the left and right sides, the lower end of the left slide block is matched with the screw rod, a rotary shaft which is horizontal in the left-right direction and capable of rotating is fixedly connected between the left slide block and the right slide block, the middle of the rotary shaft is fixedly connected with the lower end of a reaction plate, theupper end of the reaction plate is slidingly connected with the bottom wall of an arc panel, the right section of the rotary shaft is coaxially sleeved with a spur gear meshed with a rack, and the airbag is fixedly connected with the reaction plate. According to the front seat, it can be kept all the time that the unfolding direction of the airbag is not influenced by the adjustment angle of the backrest of the front seat, and the airbag is unfolded right facing back seat passengers from the front side so as to protect the back seat passengers.

Description

technical field [0001] The invention belongs to the field of passive safety of motor vehicles, and relates to a front row seat equipped with a safety air bag on a motor vehicle to protect the safety of passengers in the rear row of the motor vehicle. Background technique [0002] Passive safety is one of the important links of automobile safety. When automobile accidents cannot be avoided, the quality of passive safety performance directly affects the life safety of occupants. In the frontal collision of a car, the risk of injury for the front occupants is reduced due to the use of advanced restraint systems such as airbags, but the restraint system for the rear occupants has not been strengthened accordingly, and the risk of injury is significantly increased. The main injury of the rear occupants is the chest and neck. Studies have shown that reducing the force limit level of seat belts can effectively reduce occupant chest and neck injuries. Therefore, if airbags can be a...

AI Technical Summary

Problems solved by technology

In the literature with the Chinese patent application number CN201710036783.2, an airbag device installed on the rear side of the front seat is disclosed. The device is mainly composed of a gear train, a rack, a connecting rod, a guide rail and a reaction plate. The airbag system is installed on the reaction board of the front seat. When the backrest of the front seat is adjusted, the movement is transmitted from the rack to the connecting rod through the gear train, and then the reaction board moves on the guide rail through the connecting rod. The change of the angle can realize the position adjustment of the reaction plate; although this device can realize the fixed direction of the airbag deployment to a certain extent, but the composition of the actuator of the device is relatively complicated, and there are too many gears and linkages, which makes the device's Reliability is reduced, moreover, the design of...

Images