Checking fixture pin bush anti-falling structure

The utility model discloses a gauge pin bush anti-drop structure, relates to the automobile gauge technology field, and comprises a gauge model body, a pin bush and a fastener, the gauge model body is provided with a first installation surface, the first installation surface is provided with an installation through groove, the pin bush comprises a first connection part and a second connection part which are connected with each other, and the first connection part is provided with an installation through groove. The second connecting part is inserted into the mounting through groove, and the first connecting part is locked on the first mounting surface through the fastener. According to the anti-falling structure for the pin bush of the testing fixture, the situation that the pin bush falls off can be effectively avoided, the occurrence of abnormal detection or detection failure caused by the falling off can be reduced, and further, the maintenance frequency of the testing fixture can be reduced, so that the m