Clock spring capable of preventing fold-back and disorder of multiple cables

Abstract

The invention relates to a clock spring capable of preventing fold-back and disorder of multiple cables. According to the clock spring, the structure stability is good, fold-back and disorder of the cables are prevented, and bonding of the flat cables does not excessively rely on using of lubricating oil. The clock spring comprises an inner ring, an upper cover, flexible idler wheels, the flat cables, a retainer and a planetary gear; the flexible idler wheels comprise center parts made of hard materials and peripheral parts made of flexible materials; the diameter of each flexible idler wheelis greater than the radial distance between the inner ring and the upper cover; the flexible idler wheels are mounted on the retainer or a center shaft of the planetary gear; one ends of the flat cables extend out of the inner ring and are wound around the inner ring, and then reversely wound back into the upper cover in a U-shaped mode; the planetary gear is mounted between the inner ring and gear teeth arranged on the upper cover; and connecting shafts are arranged on the upper side and the lower side of the retainer correspondingly, the connecting shaft on the lower side penetrates into acenter hole of the planetary gear, and the connecting shaft on the upper side penetrates into center holes of the flexible idler wheels.

Description

technical field [0001] The invention relates to an improvement of a clock spring. Background technique [0002] The clock spring is a key component used for the multi-function buttons of the steering wheel and the airbag. It is generally installed under the steering wheel. When the steering wheel rotates left and right, it ensures that the internal flat cable will not be discounted, twisted or even broken, and the airbag, horn switch, etc. The normal circuit connection of electrical components. The clock spring plays a very important role in the safety system of the car. It plays the role of transmitting electrical signals and forming a loop to ensure that the safety airbag is opened to protect the safety of the driver and passengers in the event of a collision. If the circuits of the clock spring cannot be connected normally, the safety airbag cannot be opened, thereby effectively protecting the life safety of the occupant. The most commonly used clock spring has a limite...

AI Technical Summary

Problems solved by technology

However, since the deflection position of the flat cable in the virtual roller structure is not supported, the flat cable is prone to failure phenomena such as backfolding and disorder

In order to solve the phenomenon of easy bending and disorder caused by the unsupported flat cable in the virtual roller structure, the current clock spring of the virtual roller structure is to apply more lubricating oil on the flat cable, relying on the lubricating oil to stick the flat cable together, and The requirements for lubricating oil are high, so there is also the problem of over-reliance on lubricating oil

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