Rotary Angle Sensor Rotor Assembly With Integral Securing Ring
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Solution Overview
Problem
Existing rotation angle sensors face challenges in achieving precise alignment and secure connection between the rotor and housing without play, often requiring separate locking rings and complex assembly processes, which can be costly and prone to mechanical stress.
Innovation Solution
The rotation angle sensor integrates the locking ring as an integral part of the rotor assembly with corresponding locking elements and axial position securing elements, ensuring a secure, play-free connection by fixing the rotor to the housing, and incorporates torque transmission means to relieve mechanical stress, allowing for simpler production and robust assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate locking ring is used to secure the rotor to the housing, then the connection is secured, but the device complexity and manufacturing cost increase
Solution Approach 1:
The locking ring is integrated directly into the rotor assembly as an integral component rather than being a separate part. This merging of the locking ring with the rotor reduces the total number of components while maintaining the secure connection function, thereby resolving the contradiction between connection security and device complexity
2Reliability
If a separate locking ring is used to secure the rotor to the housing, then the connection is secured, but the manufacturing cost and assembly complexity increase
Solution Approach 1:
By integrating the locking ring into the rotor assembly, the manufacturing process is simplified. The locking ring can be formed as part of the rotor during the same manufacturing process, eliminating the need for separate production, procurement, and assembly steps, thereby reducing manufacturing cost and assembly complexity while maintaining connection security
3Reliability
If traditional locking methods are used, then the rotor is secured to the housing, but mechanical stress and potential failure points increase
Solution Approach 1:
The integral locking ring design creates a continuous structure without separate joining interfaces. This eliminates potential failure points at connection interfaces and distributes mechanical stress more evenly across the rotor assembly, thereby improving strength and stress resistance while maintaining connection security
Data Source
Figure 1
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AI summary
The present invention relates to a rotary angle sensor (2) for determining a rotary angle and/or a torque, comprising a housing (4) and a rotor (12) which is arranged on the housing (4) so as to be rotatable about a rotational axis (10), wherein the rotor (12) has a rotor assembly (16) with a rotor latching device (18), and wherein the rotor (12) and the housing (4) are connected to one another by means of the rotor latching device (18), and said connection is secured by means of a securing ring (20), wherein, to this end, the securing ring (20) can be transferred in the axial direction along the rotational axis (10) into a securing position, characterized in that the securing ring (20) is an integral constituent part of the rotor assembly (16) and has at least one securing element (22), by way of which the securing ring (20) secures the connection of the rotor (12) and the housing (4), and wherein the securing ring (20) and the rotor latching device (18) have latching elements (24, 26) which correspond in each case to one another, and the rotor assembly (16) has axial position securing elements (28, 30), and wherein the latching elements (24, 26) interact in such a way that the securing ring (20) is fixed in the axial direction along the rotational axis (10) relative to the rotor (12), and wherein the axial position securing elements (28, 30) interact in such a way that the rotor (12) is fixed on the housing (4) substantially without play in the axial direction along the rotational axis (10).