Vibration Motor Buffer Structure for Impulsive Haptic Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional actuators that vibrate a movable body do not effectively transmit an impulsive force to the user, as the movable body does not collide with the support body, making it difficult for the user to experience a 'hit' sensation.
Innovation Solution
An actuator design that includes a movable body, a support body with a case, a connecting body, and a magnetic drive circuit, along with a buffer material positioned between the movable and support bodies, allowing the movable body to collide with the buffer material and transmit an impulsive force to the user while preventing direct collision and potential damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the movable body directly collides with the support body to generate impulsive force, then the user can experience the impulsive force, but the support body may be deformed or damaged
Solution Approach 1:
A buffer material is introduced as an intermediary element between the movable body and the support body. The buffer material absorbs and transmits the impact force generated during collision, enabling the impulsive force to be transmitted to the user while preventing direct contact between the movable body and the support body, thus avoiding deformation or damage to the support body.
2Strength
If the movable body vibrates without colliding with the support body, then the support body remains undamaged, but the user cannot experience the impulsive force
Solution Approach 1:
The system dynamically switches between two operational modes: a first operation mode where the movable body vibrates without collision to avoid damage, and a second operation mode where the movable body collides with the buffer material to generate impulsive force. This dynamic adjustment allows the system to provide both protective functionality and sensory feedback as needed.
3Force
If a buffer material is added between the movable body and support body, then the impulsive force can be transmitted without damaging the support body, but the device complexity increases
Solution Approach 1:
The buffer material serves multiple functions simultaneously: it acts as a cushion to prevent damage during collision, transmits the impulsive force to the user for sensory feedback, and maintains the structural integrity of the support body. By consolidating these multiple functions into a single component, the increase in device complexity is minimized while achieving the desired technical effects.
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 actuator enables the user to experience an impulsive force by using a buffer material to absorb and transmit the impact, reducing the risk of deformation or damage to the support body and allowing for two operational modes: continuous vibration and impulsive force generation.
Implementation Method 1
a magnetic drive circuit including a coil and a magnet that is opposed to the coil in a first direction and causing the movable body to vibrate in a second direction that intersects the first direction
Implementation Method 2
a buffer material fixed to one of the case and the movable body and is opposed to the other of the case and the movable body in the second direction
Data Source
AI summary
The actuator includes a movable body, a support body with a case that accommodates the movable body and a coil holder, connecting bodies connected to the movable body and the support body, a magnetic drive circuit including a coil and magnets opposed to the coil in a Z direction and causing the movable body to vibrate in an X direction with respect to the support body, and a buffer material fixed to the case and opposed to the movable body in the X direction. When the magnetic drive circuit is driven with a first voltage, the movable body vibrates without colliding with the buffer material. When the magnetic drive circuit is driven with a second voltage, which is larger than the first voltage, the movable body collides with the case through the buffer material, whereby an impulsive force is generated.