Rotary Force Feedback Assembly With Belt Transmission Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing force feedback devices are large in layout space, high in friction force, and poor in feedback force control, failing to provide a good user experience.
Innovation Solution
A force feedback device with a compact design, utilizing a rotatable working surface connected to a base via a transmission shaft, driven by a driving assembly through a transmission structure, which includes a connecting belt or rope, to generate controlled force feedback upon touch or press.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If traditional direct connection structure is used, then结构简单 (structure is simple), but 布局空间大 (layout space is large) and 摩擦力大 (friction force is large)
Solution Approach 1:
The patent introduces a transmission structure comprising a transmission shaft and connecting belt as intermediary components between the driving assembly and working body. The transmission shaft rotates within a bearing to reduce friction, while the connecting belt transmits force from the driving assembly to the working body, thereby reducing both layout space and friction force compared to direct connection
Solution Approach 2:
The patent replaces the traditional direct mechanical connection with a belt transmission system. The connecting belt transmits rotational motion and force from the driving assembly through the transmission shaft to the working body, substituting rigid direct connection with a flexible transmission mechanism that reduces friction and optimizes space
2Force
If traditional vibration feedback is used, then结构简单 (structure is simple), but 反馈力控制差 (feedback force control is poor)
Solution Approach 1:
The patent employs a driving assembly that can dynamically adjust the rotational position of the transmission shaft, thereby controlling the tension and slack of the connecting belt. This dynamic control mechanism allows precise regulation of feedback force magnitude and direction, enabling the system to provide differentiated force feedback for different game scenarios rather than fixed vibration patterns
Solution Approach 2:
The patent implements a force feedback system where the driving assembly responds to user input on the key assembly by adjusting the rotational position of the transmission shaft. This creates a closed-loop feedback mechanism where the system senses user interaction and provides appropriate tactile feedback through controlled belt tension, improving feedback force control
3Force
If larger driving assembly is used, then驱动力大 (driving force is large), but 惯性大 (inertia is large)
Solution Approach 1:
The transmission shaft acts as an intermediary between the driving assembly and the working body, allowing the driving assembly to be compact while still delivering sufficient driving force. The bearing supporting the transmission shaft reduces friction during rotation, enabling efficient force transmission without requiring a large inertial mass
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 device provides compact, low-friction, and controllable force feedback, enhancing user experience by allowing forward and reverse rotations to simulate immersive tactile sensations.
Implementation Method 1
The friction force between the belt and the pulley enables the transmission of rotational motion and force from the driving assembly to the working body
Implementation Method 2
The coil contracts under driving force to adjust the positions of the end stop surfaces
Implementation Method 3
The transmission shaft rotates to enable the driving surface to drive the coil to move
Data Source
AI summary
A force feedback device includes a base, a working body, a driving assembly, and a transmission structure. The working body includes a key assembly and a working surface. The working surface is disposed on the key assembly. The working body is rotatably connected to the base through a first transmission shaft. The driving assembly is rotatably disposed on the base. The driving assembly is disposed opposite to the working surface. The transmission structure is disposed on the working surface. The transmission structure is in transmission connection with the driving assembly. Compared with the related art, the first transmission shaft of the driving assembly provides forward and reverse rotation to drive the transmission structure to realize force feedback effects, which is compact in overall space, small in friction resistance, and facilitates user experience effect.