The locking device of the safety belt retractor comprises a shell, an armature, a spring, a coil A and a coil B. The shell comprises a bottom plate, a vertical arm and an installation cavity, the armature is supported above the vertical arm in a pivoted mode and comprises a first supporting leg extending to the position above the installation cavity and a second supporting leg extending to the position below the bottom plate, one end of the spring is fixed to the armature, and the other end of the spring is fixed to the second supporting leg. After the coil A is electrified, a magnetic field is generated and can attract the first supporting leg to overcome the traction effect of the spring and move from the locking position to the releasing position. The coil B is installed on the shell and generates a magnetic field to attract or repel the second supporting leg after being powered on, and then the springback force of the first supporting leg between the releasing position and the locking position is controlled. By additionally arranging the coil B on the shell, when the retractor is locked, the coil B is electrified to generate a magnetic field to repel the second supporting leg of the armature, so that the noise generated by impacting the iron sheet when the spring rebounds is reduced on the premise of not influencing the rapid rebounding of the armature.
本说明书实施例提供一种安全带卷收器的锁止装置,包括外壳、衔铁、弹簧、线圈A和线圈B,外壳包括底板、立臂和安装空腔,衔铁可枢转地支撑在立臂上方,包括延伸到安装空腔上方第一支腿和延伸到底板下方的第二支腿,弹簧一端固定在衔铁上,另一端固定在外壳上,线圈A通电后产生磁场可吸附第一支腿克服弹簧的牵引作用由锁止位置向释放位置移动;线圈B安装在外壳上,通电后产生磁场可吸引或排斥第二支腿,进而控制第一支腿在释放位置和锁止位置之间的回弹力度。通过在外壳上增设线圈B,当卷收器发生锁止时,线圈B通电产生磁场对衔铁的第二支腿进行排斥,使得在不影响衔铁快速回弹的前提下,降低弹簧回弹的时候撞击铁片产生的噪音。
Locking device of safety belt retractor
一种安全带卷收器的锁止装置
2022-12-27
Patent
Electronic Resource
Chinese
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |