Wotaijia Granted Wiring Harness Fastening Patent

[Abstract]:Wotaijia obtains the patent for "Automotive Steering Angle Signal Wiring Harness Fastening Device" (CN 223546265 U), filed in November 2024.

According to the latest public announcement from the China National Intellectual Property Administration (CNIPA), Wotaijia Electric (Shanghai) Co., Ltd. has been granted a utility model patent titled Fastening Device for Automotive Steering Angle Signal Wiring Harness and New Energy Vehicle, with the authorization publication number CN 223546265 U. Filed in November 2024, the patent targets long-standing fixing and protection pain points of automotive steering angle signal wiring harnesses. Through innovative structural design and optimized material selection, it greatly improves the reliability of wiring harness assemblies and provides a robust safety guarantee for the electrical systems of new energy vehicles.

The automotive steering angle signal wiring harness serves as a critical connecting component between the steering angle sensor and the vehicle control system. Installed close to the steering shaft, it continuously withstands vibration, temperature fluctuations, as well as dust and moisture erosion during operation. Traditional fastening devices are prone to loosening and sealing failure, which easily cause abnormal signal transmission, degrade steering control accuracy, and even trigger potential vehicle safety hazards. Wotaijia’s newly authorized patent precisely solves these prevalent industrial technical pain points.

The patented fastening device consists of three core parts: fastener, cable and connector, among which the optimized fastener design acts as the core innovation. Adopting NBR (Nitrile Butadiene Rubber) material, the fastener delivers excellent ozone resistance, thermal aging resistance and oil resistance. It adapts well to harsh operating environments such as automobile engine compartments and effectively prevents material aging caused by long-term high temperature and oil contamination. Combined with exclusive structural optimization, the whole device achieves IP67 protection rating, featuring full dustproof performance and short-term waterproof capability at a water depth of 1 meter, realizing all-round protection for wiring harnesses.

Structurally, the fastener integrates multi-dimensional precise positioning and sealing functions. A circular positioning hole on the fastener stably clamps the cable and avoids wire displacement and abrasion caused by vehicle vibration. Internal positioning notches fit precisely with raised structures on the steering shaft, achieving circumferential positioning and completely eliminating rotational offset of the fastening device. In addition, a peripheral sealing groove with installed sealing rings closely fits the steering shaft surface, forming a reliable sealing barrier to block moisture and dust from invading wiring harness connection points from the source.

In terms of cable connection and protection, the patent balances high reliability and practicality. One end of the cable is electrically connected to the connector via crimping. Compared with traditional welding, crimping connection offers superior vibration resistance and ensures stable signal transmission. The other end is equipped with a protective cap for connection with the steering angle sensor, further enhancing end protection performance. Featuring a concise overall structure and coordinated operation of all components, the device realizes reliable wiring harness fixation and full-link protective performance.

This patent presents prominent practical value for the new energy vehicle industry, which imposes far stricter requirements on electrical system reliability than conventional fuel vehicles. The stable operation of steering angle signal wiring harnesses directly determines the operational safety of core functions such as advanced driver-assistance systems (ADAS) and electric power steering systems. The patented device requires no complex tools for assembly, greatly improving production efficiency. Its outstanding sealing protection and anti-aging performance effectively reduce maintenance costs caused by wiring harness failures and extend the service life of harness assemblies.

As a professional manufacturer focusing on automotive electrical components, Wotaijia’s latest patent fully demonstrates its in-depth technical accumulation in segmented fields. Industry analysts point out that the core innovation lies not only in the perfect combination of NBR material and IP67 high-level protection, but also in the integrated design that unifies positioning, fastening and sealing functions into a single fastener. This innovative design concept opens up a new technical direction for automotive wiring harness fastening solutions and is expected to be widely applied in the new energy vehicle sector.

Currently, the patent has been officially authorized and will be gradually transformed into mass production products. With the continuous iteration of new energy vehicle technology, the reliability requirements for basic components such as wiring harness fasteners will keep rising. Patents targeting practical application pain points will strengthen enterprises’ core competitiveness and drive continuous technological upgrading of the automotive wiring harness industry.

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Wotaijia Granted Wiring Harness Fastening Patent

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