Multidirectional Input Structure for Smooth Reset and Rotation
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Solution Overview
Problem
Existing multidirectional input devices experience throbbing due to unsymmetric pressure on elastic members, affecting user feedback during rotation, as the elastic member abuts against different positions of rocker arms, leading to inconsistent contact and vibration.
Innovation Solution
A multidirectional input device design featuring a housing with a chamber, an operating body, a rocker arm member, a reset member, and a first pressing part, where the operating body is rotatably mounted, and the reset member is elastically connected to the operating body, with the first pressing part supporting the reset member to maintain consistent contact and prevent throbbing during rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the elastic member abuts against the bottom of two rocker arms in a reset state, then the operating body can automatically reset when external force is unloaded, but the elastic member will throb during the switching process of abutting position, affecting user's hand feeling
Solution Approach 1:
A buffer member is introduced as an intermediary component between the elastic member and the rocker arms. The buffer member absorbs and dampens the throbbing and vibration generated during the switching process of the elastic member's abutting position, while still allowing the automatic reset function to operate effectively.
Solution Approach 2:
The buffer member is positioned in advance to cushion the elastic member before the throbbing occurs during switching. By providing pre-cushioning at the abutting position, the harmful vibrations are dampened before they can be transmitted to the operating body, improving user hand feeling while maintaining the reset function.
2Use of energy by moving object
If the elastic member is unsymmetrically pressed by the rocker arm during rotation, then energy is stored to enable automatic reset, but the different positions of rocker arms cause the elastic member to throb
Solution Approach 1:
The buffer member serves as a mediator between the unsymmetrically pressed elastic member and the rocker arm. It absorbs the harmful throbbing caused by the asymmetric pressure variations during rotation, while still allowing the elastic member to store energy effectively for the automatic reset function.
3Ease of operation
If the elastic member abuts against an end of the rocker arm as a pivot, then the operating body can rotate, but the switching process transmits throbbing to the operating body
Solution Approach 1:
The buffer member is positioned between the elastic member and the rocker arm pivot point. It acts as a mediator that absorbs the throbbing generated during the switching process, preventing this vibration from being transmitted to the operating body, while still allowing smooth rotation to occur.
Solution Approach 2:
The buffer member provides cushioning at the pivot point before the throbbing is transmitted to the operating body. By dampening the vibrations at the source during the switching process, it prevents harmful feedback to the user during rotation operations.
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
The design ensures consistent contact between the reset member and the operating body, eliminating throbbing and enhancing user feedback by maintaining continuous support during the rotation of the operating body, thereby improving the operating feeling of the multidirectional input device.
Implementation Method 1
the energy of the elastic member is stored by unsymmetrically pressing the elastic member, so as to realize the automatic reset of the operating body when the external force is unloaded
Data Source
AI summary
A multidirectional input device includes a housing, an operating body, a rocker arm member, a reset member, and a first pressing part. A chamber is provided inside the housing which forms an opening communicating with the chamber. The operating body is provided in the chamber and extends out of the chamber from the opening. The rocker arm member and the reset member are provided in the chamber and are drivingly connected. The reset member and the operating body are elastically connected. The first pressing part is provided on the rocker arm member and extends in a direction close the reset member. During a movement process of operating body, the lower end face of operating part abuts against the upper end face of reset member, and the first pressing part abuts against an edge of the upper end face of reset member.