Safety belt retractor with anti-locking function

Abstract

The invention provides a safety belt retractor with an anti-locking function and belongs to the technical field of machinery. The safety belt retractor with the anti-locking function comprises a retracting shaft and a retracting rack, wherein the retracting rack is fixed in the middle of the retracting shaft, and both ends of the retracting shaft are symmetrically respectively provided with a torsion controller; each torsion controller comprises a mounting box, a locking barrel and a driving block, the locking barrel and the mounting box are connected through a spring, the inside of the locking barrel is provided with a sliding cavity, the driving block is arranged inside the sliding cavity, the outer surface of the driving block and the inner wall of the sliding cavity are connected through a spline, the locking barrel and the mounting box are connected with the retracting shaft through bearings, the driving block is connected with the retracting shaft through threads, and a pressurespring is connected between the driving block and the retracting barrel; one side of the locking barrel, which is close to the end portion of the retracting shaft, is provide with a locking disc I, the inner wall of the mounting box is provided with a locking disc II parallel to the locking disc I, and the retracting shaft can accelerate the rotating speed to drive the locking disc I and the locking disc II to combine up. The safety belt retractor with the anti-locking function has the advantages of avoiding strangulation of a user and the like.

Description

technical field [0001] The invention belongs to the technical field of machinery and relates to a safety belt retractor with an anti-lock function. Background technique [0002] Seat belts are an important part of the passive safety system of vehicles, airplanes and other vehicles, and one of the most important safety guarantees for drivers and passengers, as well as an important part of supporting equipment for vehicles such as child seats. [0003] The function of the seat belt is to limit the position of the human body when the car decelerates, so as to prevent the inertial force from causing the human body to fall forward, thereby protecting the human body. The seat belt continues to be pulled out, but this often causes harm to the human body, such as strangulation, and even when the seat belt is tightened in a misplaced position, it is easy to cause a safety hazard of strangulation, especially on the child safety seat. seat belt. [0004] The reason is that under the ...

AI Technical Summary

Problems solved by technology

[0003] The function of the seat belt is to limit the position of the human body when the car decelerates, so as to prevent the inertial force from causing the human body to fall forward, thereby protecting the human body. The seat belt continues to be pulled out, but this often causes harm to the human body, such as strangulation, and even when the seat belt is tightened in a misplaced position, it is easy to cause a safety hazard of strangulation, especially on the child safety seat. seat belt

[0004] The reason is that under the continuous and changing inertial force, the seat belt is always in a locked state, causing it to cause harm to the human body. In fact, most of the major car safety accidents are deceleration first, and then When an impact occurs, then, during the deceleration process until the impact occurs, because the seat belt has been locked, the seat belt tightens the human chest twice, causing strangulation. After the accident, due to the tight pull of the seat belt The existing seat belt can only be stretched or retracted by first making the seat belt in a loose state. At this time, it is often difficult for the injured in an accident to untie the seat belt and need to press the seat belt clip. Buckle and pull out the tongue of the seat belt. The seat belt cannot be untied by pulling it out directly, which may delay the escape opportunity. Especially in complex safety accidents, the buckle position of the seat belt may be blocked or damaged. , the seat belt originally used to protect the human body has become an "obstacle" that restrains the wounded from escaping.

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