Steering Sensor Assembly Coupling Projections Housing Grooves
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Solution Overview
Problem
Existing power steering sensor assemblies require a separate auxiliary member like an O-ring for coupling, which can be distorted or dislodged due to external forces in a vehicle, leading to unstable mounting of the sensing device within the housing.
Innovation Solution
A power steering sensor assembly design featuring a sensing device with coupling projections on its outer surface and corresponding grooves on the housing inner surface, allowing secure coupling without radial or axial movement, using elastic bar-shaped members for stable fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate auxiliary member such as an O-ring is used to couple the sensing device to the housing, then the sensing device can be fixed in the housing, but the coupling becomes unstable under repetitive external forces causing distortion or dislodgment
Solution Approach 1:
The coupling function is merged directly into the sensing device structure through integrally formed coupling projections on the outer circumferential surface. This eliminates the need for separate auxiliary members like O-rings while providing stable coupling through the direct mechanical interlocking of projections with grooves in the housing.
Solution Approach 2:
The auxiliary coupling members (O-rings) are extracted/removed from the system. The patent achieves coupling functionality through the sensing device's own structural features (coupling projections) rather than requiring external auxiliary components, thereby simplifying the overall device structure.
2Ease of manufacture
If an O-ring is used to fix the sensing device in the housing, then mounting is simplified, but the O-ring may be distorted or come off under external impact forces
Solution Approach 1:
The coupling projections are designed with elastic bar-shaped members that can dynamically deform under external forces and then return to their original shape. This dynamic elasticity allows the coupling to absorb impact forces while maintaining the fixed position of the sensing device in the housing.
Solution Approach 2:
The coupling projections utilize elastic materials (such as rubber or elastomers) that combine structural support with shock absorption capabilities. This composite approach provides both the simplicity of mounting and the reliability needed to resist distortion and dislodgment under external forces.
3Reliability
If additional auxiliary members are prepared and coupled to the sensing device, then the sensing device can be secured in the housing, but the device complexity and assembly steps increase
Solution Approach 1:
The coupling functionality is merged into the sensing device itself through integrally formed coupling projections. This eliminates the need for separate auxiliary members and reduces the total component count while maintaining secure coupling through direct mechanical interlocking with the housing grooves.
Solution Approach 2:
The sensing device serves its own coupling function through its built-in coupling projections rather than requiring external auxiliary members. The elastic bar-shaped members of the coupling projections automatically deform and lock into the housing grooves, providing self-securing functionality.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design ensures reliable and stable coupling of the sensing device to the housing without the need for additional auxiliary members, preventing distortion or dislodgment under repetitive external forces.
Implementation Method 1
Each of the coupling projections of the sensing device may include two bar-shaped members separated from each other in a radial direction in a state in which the coupling projections are fixed to the outer circumferential surface of the sensing device, and each of the bar-shaped members may be formed of an elastic material.
Data Source
AI summary
Provided is a power steering sensor assembly which is capable of maintaining a stable coupling between a sensing device and a housing without using a separate auxiliary member, and is mounted in an electric power steering system. The power steering sensor assembly includes a sensing device including a plurality of coupling projections formed on an outer circumferential surface thereof, and a first housing having the sensing device housed therein and including a plurality of coupling grooves formed on an inner circumferential surface thereof, the coupling grooves each having an upper end which is opened. When the sensing device is housed in the first housing, the coupling projections of the sensing device are inserted into the coupling grooves of the first housing, respectively, such that the sensing device is coupled to the first housing without being moved in a radial direction and an axial direction.