Back gantry spiral limiting block hidden limiting structure

Abstract

The invention provides a back gantry spiral limiting block hidden limiting structure. A hidden limiting structure protruding in the radial direction of a back gantry spiral limiting block is arrangedat the portion, between two spiral line roots, of the extreme screwing-in position of a thread portion of the back gantry spiral limiting block, and the height of the hidden limiting structure in theradial direction of the back gantry spiral limiting block is smaller than the height of an external thread of the back gantry spiral limiting block. Once tightening force needed when an operator installs the back gantry spiral limiting block is increased suddenly, the screwing-in operation of the back gantry spiral limiting block is completed, and the operation is convenient and reliable. After the back gantry spiral limiting block is installed, no exposed or protruding structure exists, and the part refined performance is obviously improved. Considering the cost, the cost can be increased when the refined performance is improved generally, however the back gantry spiral limiting block hidden limiting structure can improve the refined performance on the premise that the cost is not changed.

Description

technical field [0001] The invention belongs to the field of automobile back door parts and relates to a hidden limit structure of a screw limit block of a back door. Background technique [0002] The screw stopper of the back door is connected with the threaded hole on the inner sheet metal of the back door through screw connection. When installing the screw stopper of the back door, the operator needs to screw the screw stopper of the back door In the threaded hole on the inner sheet metal of the back door, the limiting structure of the existing back door screw limit block is set outside the threaded part of the limit block, and the precision of the parts is poor, and if the back door screw limit If the position block is not screwed in properly, problems such as looseness, abnormal noise, and insufficient limit accuracy will occur. If the screw limit block of the back door is screwed in too tightly, problems such as thread damage and insufficient limit accuracy will also o...

AI Technical Summary

Problems solved by technology

[0002] The screw stopper of the back door is connected with the threaded hole on the inner sheet metal of the back door through screw connection. When installing the screw stopper of the back door, the operator needs to screw the screw stopper of the back door In the threaded hole on the inner sheet metal of the back door, the limiting structure of the existing back door screw limit block is set outside the threaded part of the limit block, and the precision of the parts is poor, and if the back door screw limit If the position block is not screwed in properly, problems such as looseness, abnormal noise, and insufficient limit accuracy will occur. If the screw limit block of the back door is screwed in too tightly, problems such as thread damage and insufficient limit accuracy will also occur

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