一种IGBT外框体的端子一次块结构

Abstract

本实用新型是一种IGBT外框体的端子一次块结构，包括端子组件结构以及一次块连接件结构，一次块连接件结构包括键合预注塑结构、设在键合面二次注塑结构中的防溢胶压紧结构以及二次注塑定位螺母结构，所述的端子组件包括前端弧形端子件结构、键合面尾端临时定位结构，所述的端子组件结构的尾端与一次块连接件结构的键合预注塑结构穿插连接。增加端子一次注塑成一次块，二次注塑时通过一次块定位和封胶，解决端子注塑充胶移位和端子键合区溢胶以及螺母充胶移位问题。多个端子件注塑在一起，减少二次注塑时端子件埋入模具的时间，提高生产效率；端子尾端用于注塑时的定位，注塑后裁切掉，以及上下端的支撑部分，保证了端子在产品中的尺寸要求。

Claims

1. An IGBT outer frame body terminal primary block structure comprising a terminal assembly structure and a primary block connecting member structure connected outside the terminal assembly structure, characterized by: The primary block connector structure includes a bonding pre-injection molding structure, an anti-overflow adhesive clamping structure provided in the secondary injection molding structure of the bonding surface, and a secondary injection molding positioning nut structure. The terminal assembly includes a front arc-shaped terminal structure and a bonding surface tail temporary positioning structure. The tail end of the terminal assembly structure is interlocked with the bonding pre-injection molding structure of the primary block connector structure.

2. The terminal primary block structure of an IGBT outer frame body according to claim 1, characterized by: The terminal assembly structure includes a front arc portion, a middle wrapping and fixing portion, a bonding connection portion, and an end temporary positioning portion. The terminal assembly structure is formed by stamping with a stamping die.

3. The terminal primary block structure of an IGBT outer frame body according to claim 1, characterized by: The bonding pre-injection structure includes a head support block, a middle connecting block, an edge extension block integral with the middle connecting block, and a bonding surface connecting end.

4. The terminal primary block structure of an IGBT outer frame body according to claim 1, characterized by: The secondary injection molding positioning nut structure includes a side end nut structure on the side extension block positioning block and a bottom surface fixing nut group on the bottom surface of the middle connecting block. The side end nut structure and the bottom surface fixing nut group are injection molded by mold.

5. The terminal primary block structure of an IGBT outer frame body according to claim 4, characterized by: The side-end nut structure includes a pressure column cross nut column integrally injection molded with the side extension block positioning block, and a bottom limiting block located at the bottom of the side extension block positioning block.

6. The terminal primary block structure of an IGBT outer frame body according to claim 3, characterized by: The head support block is provided with a side limit insert at its side end.

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