Radio Control Transmitter Switch Mechanism
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Solution Overview
Problem
The stick type radio control transmitter with a display at the lower portion of the front case faces challenges in providing an increased display area due to space constraints from other components, and rearranging the display to the upper center to improve visibility results in an unbalanced center of gravity, affecting controllability. Additionally, the conventional switch mechanism does not operate effectively when the display is moved to the upper portion.
Innovation Solution
A radio control transmitter design with a recessed portion on the back side of the housing, allowing the control board to be moved to the lower portion for balance, and incorporating a switch mechanism with a slanted inner peripheral face that can be operated with a good click feeling by rotating a switch knob using a sliding finger action.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the display is arranged at the lower portion of the front case, then the display area is limited by space constraints from other components, but the user needs to move sight line for a long distance from the object to be controlled to the display, making it difficult for inexperienced users to check display contents during control
Solution Approach 1:
The display is repositioned from the lower portion to the upper portion of the front case, changing its spatial dimension. This relocation allows the display to be positioned closer to the user's natural line of sight during operation, eliminating the need to move the sight line for a long distance and improving ease of operation for inexperienced users.
2Area of stationary object
If the display area is increased, then more information can be displayed, but the display area is limited when the display is arranged at the lower portion of the front case due to space constraints from other components
Solution Approach 1:
By moving the display to the upper portion of the front case, the patent utilizes previously underutilized space in that region. This spatial reconfiguration allows for an increased display area without adding more components, as the upper portion had fewer obstructions from sticks and operation keys compared to the lower portion.
3Illumination intensity
If the control board is arranged at the upper portion of the transmitter (on the back face of the display), then the display can be positioned centrally and upperly for improved visibility, but the center of gravity of the transmitter would be shifted and biased toward the upper portion, causing unbalance in weight during operation and lowering controllability
Solution Approach 1:
The control board is repositioned from the upper portion (back face of the display) to the lower portion of the transmitter. This spatial relocation balances the weight distribution by preventing the center of gravity from shifting too far upward, thereby maintaining weight balance and improving controllability during operation while still allowing the display to be positioned in the upper central area for improved visibility.
4Ease of operation
If a switch mechanism is provided at the inner peripheral face of the recessed portion, then the user can operate the switch without moving the sight line during control, but the conventional switch mechanism does not operate effectively when the display is moved to the upper portion
Solution Approach 1:
The switch mechanism utilizes the slanted inner peripheral face of the recessed portion, allowing the user to operate the switch by applying force in a direction that is natural during holding and operation. The slanted surface converts the user's natural gripping motion into effective switch actuation, ensuring reliable operation without requiring the user to move their sight line from the display.
Data Source
AI summary
A switch mechanism arranged on a slanted inner peripheral face of a recessed portion formed on a back side of a housing and capable of providing good click feeling is provided. The rotatably-arranged switch mechanism is provided on the slanted inner peripheral face of the recessed portion formed on the back case on back side of a display part, and includes a push part arranged on one end of a knob body arranged rotatable around a shaft to be pushed by a user's finger, and a transmission part located at another end of the knob body to transmit rotation force generated by pushing the push part to a push switch. When the push part is pushed by the finger during control, the knob body rotates around the shaft and transmits rotational force to an actuation piece of the push switch via the transmission part, thereby pushing the push switch.