User Interface Actuator Gap Setting With Removable Spacer
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Solution Overview
Problem
Existing manufacturing methods for user interface devices struggle to precisely determine the dimension of the gap between the operated member and the actuator, leading to inaccuracies in the electromagnetic force applied and the resulting vibration.
Innovation Solution
A manufacturing method involving arranging the actuator and operated member to face each other across a wider second gap, inserting a spacer with the desired gap dimension, displacing one of the components to sandwich the spacer, and then removing the spacer to achieve the precise gap dimension.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional manufacturing methods are used to assemble the actuator and operated member, then the assembly process is simple, but the gap dimension between the operated member and actuator cannot be precisely determined
Solution Approach 1:
A spacer is introduced as an intermediary component between the actuator and operated member during assembly. The spacer has a predetermined thickness that directly determines the gap dimension, serving as a physical mediator to achieve precise gap control without requiring complex measurement or adjustment procedures.
Solution Approach 2:
The spacer is pre-manufactured with the exact thickness required for the desired gap dimension. By preparing the spacer in advance with precise dimensions, the gap precision is ensured before the final assembly takes place, eliminating the need for post-assembly adjustments or complex measurement procedures.
2Reliability
If the gap dimension is not precisely controlled, then the manufacturing process is simpler, but the electromagnetic force application and vibration performance are inaccurate
Solution Approach 1:
The spacer acts as a reliable intermediary that physically guarantees the correct gap dimension, ensuring consistent electromagnetic force application between the actuator and operated member. This mediator component eliminates variability in gap dimensions, thereby ensuring reliable and accurate electromagnetic force delivery.
Solution Approach 2:
The gap dimension parameter is precisely controlled by changing the thickness parameter of the spacer component. By manufacturing the spacer with a specific thickness value, the gap dimension is directly determined, ensuring accurate electromagnetic force application and consistent vibration performance.
3Manufacturing precision
If a spacer is inserted and then removed after assembly, then the gap dimension precision is improved, but the manufacturing process time increases
Solution Approach 1:
The spacer is pre-manufactured with precise dimensions before assembly. By preparing the spacer in advance with the exact required thickness, the need for post-assembly measurement and adjustment is eliminated, reducing overall manufacturing time despite the additional insertion and removal steps.
Solution Approach 2:
The spacer serves as a temporary intermediary component that is inserted during assembly to ensure precise gap positioning, then removed after the actuator and operated member are properly positioned. This mediator approach ensures precision without requiring time-consuming measurement and adjustment procedures during the critical assembly phase.
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 method allows for precise determination of the gap dimension between the operated member and the actuator, enhancing the accuracy of the electromagnetic force applied and improving the vibration performance of the user interface device.
Implementation Method 1
an actuator provided on an other of the immovable portion and the movable portion, the actuator facing the operated member in a first direction via a first gap, the actuator being configured to apply an electromagnetic force to the operated member to displace the movable portion
Implementation Method 2
The user interface device is configured such that the actuator repeatedly attracts and releases the operated member, causing the movable portion to vibrate and providing feedback to a user through the vibration
Data Source
AI summary
A manufacturing method for a user interface device. The user interface device includes an immovable portion, a movable portion, an operated member provided on one of the immovable portion and the movable portion, and an actuator provided on an other of the immovable portion and the movable portion, the actuator facing the operated member in a first direction via a first gap. The actuator being configured to apply an electromagnetic force to the operated member to displace the movable portion. The manufacturing method includes arranging the actuator and the operated member to face each other across a second gap, inserting a spacer into the second gap, displacing at least one of the operated member and the actuator, and removing the spacer.