Automobile interior decorative parts turn button structure having crumpling function

Abstract

The invention relates to an automobile interior decorative parts turn button structure having a crumpling function. The automobile interior decorative parts turn button structure comprises a PCB board, a hollow encoder, a turn button, a press key support rack, a press key cap and a decoration ring, wherein the turn button sleeves a hollow rotating shaft of the hollow encoder, and three elastic arms are designed on a lower part of the turn button and are enabled to match with three guiding grooves on the hollow encoder. End faces of the elastic arms of the turn button are abutted against a limiting face of a bottom part of a middle guiding groove, and the turn button can be axially limited. An inner side of a bottom part of each of the elastic arms of the turn button is chamfered; when axial force within a certain limit is acts on the turn button, the three elastic arms can easily expand outward, and the turn button is enabled to crumple. When the axial force acting on the turn button exceeds the certain limit, the three elastic arms of the turn button expand outward, the whole turn button slides downward along the hollow encoder / potentiometer, the turn button is enabled to crumple about 3 mm, and safety of passengers can be protected.

Description

technical field [0001] The invention relates to the technical field of vehicle interior decoration equipment, in particular to a knob structure of an automobile interior decoration with a crush function. Background technique [0002] At present, almost all domestic automakers have GB11552 or ECE-R21 requirements for the protrusions of automotive interior knobs. In the case that the height of the interior knob protrusion exceeds 9.5mm, and the excess part does not exceed 2mm (that is, the height of the knob is 11.5mm, and the height of the knob is the most commonly used and most convenient height for the knob of the automotive interior electrical device, the application is very Generally.), in order to meet the requirements of GB11552 or ECE-R21, the common practice in the industry is to adopt the scheme that the knob can collapse and fall off under the force of 378N: directly use the potentiometer or encoder finished parts for the knob, and the hollow knob below For the PCB...

AI Technical Summary

Problems solved by technology

At present, this kind of collapse and fall-off scheme has two main disadvantages: 1. Due to the influence of PCB material and manufacturing process, the collapse force varies greatly, and it is difficult to meet the strict requirements of some customers for the range of collapse force; 2. This Knob crumpling and falling off scheme, when the vehicle is collided, the knob will crumble and fall off when the product is subjected to a force of 378N; in addition, under non-collision conditions, the knob may also crumble and fall off due to misoperation by the occupant

As long as the knob collapses and falls off, some or all of the functions of the knob will fail, and the car needs to be repaired to replace the part, which will cause great losses to consumers and a great waste of resources.

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