一种抗撞击变形的光耦引线框架

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By setting vertical reinforcing ribs and weakening grooves in the hollowed-out slots on the optocoupler lead frame, the deformation problem caused by the impact of the push rod during the processing of the optocoupler lead frame is solved, achieving a balance between impact resistance and easy cutting.

CN224521659UActive Publication Date: 2026-07-17苏州泓冠半导体有限公司

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: 苏州泓冠半导体有限公司
Filing Date: 2025-08-23
Publication Date: 2026-07-17

AI Technical Summary

Technical Problem

During processing, the optical coupler lead frame is prone to significant deformation due to repeated impacts from the push rod, which can lead to deformation of the connecting ribs, affecting the rib cutting effect and increasing the defect rate.

Method used

A hollowed-out groove is provided on the connecting rib of the optocoupler lead frame, and a reinforcing rib is set inside the hollowed-out groove. The reinforcing rib is perpendicular to the connecting rib by setting a reinforcing rib in the hollowed-out groove. A weakening groove is opened on the surface to disperse the impact stress. Through the V-shaped design, the reinforcing rib perpendicular to the connecting rib is set in the hollowed-out groove to provide bending stiffness. At the same time, the weakening groove is used as a preset fracture point to ensure the smooth fracture of the reinforcing rib when cutting the rib.

Benefits of technology

It effectively reduces the deformation of the connecting ribs, lowers the probability of rib misalignment, avoids short circuits caused by residual metal fragments, and ensures that the rib cutting effect is not affected.

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Abstract

本实用新型涉及光耦引线框架技术领域，尤其涉及一种抗撞击变形的光耦引线框架；通过在镂空槽内设置与连接筋垂直的加强筋，直接针对推料杆的垂直撞击方向提供最大抗弯刚度，加强筋嵌入镂空槽形成局部支撑结构，有效分散撞击应力，大大降低连接筋变形量和因变形超差导致的切筋错位的概率，通过设置V形的弱化槽作为预设断裂点，使切筋工序中刀片精准落入V形尖部的应力集中区，确保加强筋在切筋过程中瞬间彻底断裂，通过使V形尖部远离刀片的设计控制碎片向框架外侧飞溅，避免残留金属碎片引发引脚间短路，弱化槽筋提高整体抗变形能力的同时不影响切筋；解决了目前的光耦引线框架在加工过程中容易被推料杆反复撞击而出现较大形变的技术问题。

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Claims

1. An optical coupling lead frame resistant to impact deformation, comprising two parallel arranged side rails (1), a plurality of connecting ribs (2) arranged between the two side rails (1), a plurality of groups of optical coupling pins (3) arranged on the connecting ribs (2), and a plurality of hollow grooves (4) arranged on the connecting ribs (2) between each group of optical coupling pins (3), characterized in that, The hollow groove (4) is provided with a reinforcing rib (5) perpendicular to the connecting rib (2), and a weakening groove (6) is provided on the surface of the reinforcing rib (5) to reduce its shear stress.

2. The optical coupling leadframe of claim 1, wherein, The weakening groove (6) is located at at least one end of the reinforcing rib (5).

3. The optical coupling leadframe of claim 1, wherein, The cross-section of the weakening groove (6) is V-shaped.

4. The optical coupling leadframe of claim 3, wherein, The V-shaped tip of the weakening groove (6) is located on the side of the reinforcing rib (5) away from the rib cutting blade.

5. The optical coupling leadframe of claim 1, wherein, The weakening groove (6) is a gap between one end of the reinforcing rib (5) and the connecting rib (2).

6. The optical coupling leadframe of claim 1, wherein, The weakening groove (6) is located on at least one side of the upper and lower sides of the reinforcing rib (5).