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图 1：TPA 锁（黄色）脱开 - 触头体尚未完全就位，可以自由取下。
顾名思义，位置保证是一种确保 "某物 "保持在正确位置的机制。在某些情况下，这种功能被称为辅助闩或辅助锁。在 FAKRA 或我们的AUTOMATE Mini-FAKRA 连接器系统等汽车连接器中常见的位置保证有两种不同类型：TPA 和 CPA。
端子位置保证 (TPA)
端子位置保证 (TPA) 通过使用滑入连接器外壳的辅助锁，确保连接器外壳内的端子（或触头体）完全就位。锁滑入端子本体上的凹槽，如果触头未正确就位，辅助锁将无法正确啮合。端子完全就位后，锁即可插入。TPA 不仅能确保触点正确就位，还有助于减少端子在连接器内的移动。要将端子从连接器外壳中取出，必须先取下 TPA。
图 2：TPA 锁定 - 触头体定位正确，无法移除。
连接器位置保证 (CPA)
连接器位置保证 (CPA) 是一种机制，旨在确保一对配对连接器配对后保持在一起。就我们的 AUTOMATE Mini-FAKRA 连接器系统而言，电缆安装插孔具有一个主闩锁。闩锁在配接插头上的固定夹下滑动，将连接器固定在配接位置。只有按下主插销，使其从配接连接器的固定夹上松开，连接器才能解除配接。
图 3：配接 AUTOMATE Mini-FAKRA 连接器。主闩已部分压下。
要防止连接器脱落，有一个简单的解决方案。使用 CPA 装置限制闩锁的移动，闩锁就无法压下，连接器将保持在配接位置。
图 4：左侧 - 连接器位置保证锁啮合。右图 - CPA 组件（单独订购）。
位置保证对于汽车互连装置的安装至关重要，可确保配对连接器保持连接（CPA），触头体完全就位在适当位置（TPA）。这些广受欢迎的设计元素已从传统 FAKRA 延续到 AUTOMATE Mini-FAKRA 连接器系列，成为可选或标准功能。
有关位置保证的更多信息，请联系您当地的 Amphenol RF 销售代表。
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