主体结构采用3D打印技术制造，锁钩部位通过直径3 mm、长度30 mm钢制销钉加固；锁扣肘节部分使用直径3 mm、长度25 mm不锈钢销钉固定。整体设计满足无支撑打印要求。

The main structure is fabricated via 3D printing. The hook component is reinforced with a 3 mm diameter × 30 mm long steel pin, while the toggle latch mechanism is secured by a 3 mm diameter × 25 mm long stainless steel pin. The entire design is optimized for support-free printing.

附加的测试台（Test Bench）文件夹包含专用于锁扣性能验证的测试装置模型，安装时可通过6颗螺钉固定锁扣和锁钩部分，并保证小幅度的前后滑动。

The Test Bench folder contains a dedicated testing fixture model for validating latching performance. During installation, the latch and hook components can be secured with 6 screws while allowing minor front-back sliding movement.

实际应用时，请将锁扣和锁钩组件集成至目标模型中，并确保满足以下参数：

For practical implementation, integrate the latch and hook assemblies into the target model while adhering to the following parameters:

1. 锁钩侧规格：采用长度20 mm、直径3 mm的钢制销钉；
   Hook Side Specifications: Steel pin with 20 mm length and 3 mm diameter;

   

2. 锁扣侧设计：对应侧需开设直径3.5 mm的对向安装孔，间距26 mm；
   Latch Side Design: 3.5 mm diameter counterbore mounting holes on the opposing side with 26 mm center-to-center spacing;

   

3. 锁定中心距：搭扣完全锁定后，锁钩侧销钉中心与对侧安装孔中心距为13.6 mm；
   Locked Center Distance (C-C): 13.6 mm between the hook-side pin center and the opposing mounting hole center when fully locked;

   

4. 支撑垫片：锁钩与配合侧间需设置厚度约2 mm的弹性支撑垫片，以确保锁紧力稳定；增加支撑垫片后，未锁定前锁定中心距应保持在14 mm至15 mm范围内。
   Support Gasket: A ~2 mm thick elastic gasket must be installed between the hook and mating side to stabilize clamping force. Note: With the gasket installed, the pre-locking C-C distance should remain within 14 mm to 15 mm.

注意：
Note:

1. 支撑垫片需采用TPU或其他弹性材料打印；

   Print the support gasket using TPU or other flexible materials;
    

2. 插入钢制销钉前，请使用3 mm钻头清理打印孔内残留物。

   Clean residual material from printed holes with a 3 mm drill bit prior to steel pin insertion.