The invention provides a safety belt retractor and a pre-tensioning assembly which are applied to the technical field of safety belt pre-tensioning, the pre-tensioning assembly comprises a reel, a pre-tensioning gear disc and a force limiting rod, an outer convex circle is additionally arranged on the reel, the first end of the pre-tensioning gear disc is embedded into the outer convex circle of the reel, and the second end of the pre-tensioning gear disc is embedded into the outer convex circle of the reel; the pre-tightening gear disc and the reel are mutually supported so as to reduce the error of coaxiality between the pre-tightening gear disc and the reel, the force limiting rod penetrates into the reel, one end of the force limiting rod is fixedly connected with the first end of the reel, the other end of the force limiting rod is fixedly connected with the pre-tightening gear disc, and therefore after the first end of the pre-tightening gear disc is embedded and installed in the reel, the pre-tightening gear disc and the reel are fixedly connected. The height of the outer convex circle at the second end of the reel and the height of the second end of the pre-tightening gear disc are both higher than those of the radial teeth, so that the radial teeth can receive driving force provided by a pre-tightening rod in the safety belt retractor and then drive the pre-tightening gear disc to rotate, and then the force limiting rod drives the reel to rotate to retract the safety belt.
本申请提供一种安全带卷收器及预张紧组件,应用于安全带预张紧技术领域,其中预张紧组件包括:卷轴、预紧齿轮盘和限力杆,卷轴增设有外凸圆,预紧齿轮盘的第一端嵌入安装于卷轴的外凸圆内部,使预紧齿轮盘和卷轴相互支撑以减小预紧齿轮盘和卷轴之间同轴度的误差,限力杆穿入卷轴内部,且限力杆的一端与卷轴的第一端固定连接,限力杆的另一端与预紧齿轮盘固定连接,从而在预紧齿轮盘的第一端嵌入安装于卷轴后,卷轴第二端上外凸圆的高度和预紧齿轮盘的第二端的高度,均高于径向齿,使得径向齿能够接收安全带卷收器中预紧杆提供的驱动力后带动预紧齿轮盘转动,进而由限力杆带动卷轴转动卷收安全带。
Safety belt retractor and pre-tensioning assembly
一种安全带卷收器及预张紧组件
2024-09-06
Patent
Electronic Resource
Chinese
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
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