Electronic Pen Body Portion Recessed Side Switch Design
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Solution Overview
Problem
Existing electronic pens with side switches face issues of unstable connections and reduced cartridge strength due to protruding buttons or operation holes, leading to discomfort and potential interference with installation.
Innovation Solution
An electronic pen design featuring a tubular outer housing with a replaceable cartridge-type electronic pen body portion, incorporating a push button switch on a circuit board and a pressing member with engagement portions to secure the side switch, allowing for proper operation without protrusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a push button switch is provided on the electronic pen cartridge, then the side switch function is achieved, but the cartridge strength is reduced due to the need for operation holes
Solution Approach 1:
The pressing member is nested within the cartridge body, with the operation portion recessed into the cartridge rather than protruding outward. This nesting approach maintains the cartridge's structural integrity while still allowing access to the push button switch through the recessed operation portion.
Solution Approach 2:
The operation portion is designed with localized accessibility - the pressing member has an operation portion that can be accessed through a small opening while the rest of the cartridge remains intact and strong. This allows the switch function to be accessed without compromising the overall structural strength of the cartridge.
2Ease of operation
If a push button switch is provided on the electronic pen cartridge, then the side switch function is achieved, but protruding components interfere with installation into the writing implement housing
Solution Approach 1:
Instead of having the operation portion protrude outward from the cartridge, the design inverts this arrangement by recessing the operation portion into the cartridge body. This inversion eliminates the interference with installation while maintaining the ability to operate the switch.
Solution Approach 2:
The pressing member is nested within the cartridge body with its operation portion recessed, allowing it to fit smoothly into the writing implement housing without protruding components that would interfere with installation.
3Ease of operation
If contact points are connected through operation portions on the housing, then the side switch function is achieved, but the connection becomes unstable depending on positional relations
Solution Approach 1:
The pressing member acts as an intermediary between the user's finger and the push button switch. It provides a stable, dedicated connection path through the cartridge body, eliminating the instability caused by varying positional relations between the housing and cartridge.
Solution Approach 2:
The side switch function is segmented into a dedicated pressing member and push button switch assembly within the cartridge, separate from the housing. This segmentation ensures that the connection stability depends only on the precise positioning of the pressing member relative to the switch, not on the overall housing-cartridge alignment.
Data Source
AI summary
Provided is an electronic pen that includes a body portion housing of an electronic pen body portion has housed therein a refill body and a circuit board having a side switch formed by a push button switch mounted thereon, and has a pen-point opening portion through which a pen point of the refill body protrudes. A pressing member is provided in a side opening portion of the body portion housing such that the pressing member is disposed on the side switch in such a manner as to be prevented by an engagement portion from protruding outwardly from a side surface of the body portion housing. The side switch of the circuit board is operated through the pressing member of the electronic pen body portion when an operation unit of the outer housing having the electronic pen body portion installed therein is pressed.