Illuminated Toothbrush Activation Mechanism for Children
Solution Overview
Problem
Children often struggle to activate the illumination circuit in existing toothbrushes, requiring mechanical strength and dexterity, which can be a barrier to effective brushing time adherence.
Innovation Solution
The toothbrush features an improved activation mechanism with a power segment, extension portion, and activation portion, including a spring member and contact member, allowing for easy activation through gentle manipulation of the base, ensuring the illumination circuit is activated without excessive force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a spring compression mechanism is used to activate the illumination circuit, then the activation force can be reduced, but the device complexity increases due to additional components
Solution Approach 1:
The patent combines the spring mechanism, contact members, and illumination circuit activation into a single integrated base structure. The spring is housed within the base and automatically engages with contact members when the base is manipulated, merging multiple functional components into one unified assembly that reduces overall device complexity while maintaining the force-reduction benefit.
Solution Approach 2:
The spring mechanism is designed to automatically compress and release without user intervention beyond the initial base manipulation. Once activated, the spring self-regulates the contact pressure and timing, eliminating the need for additional control mechanisms or user-adjustable components, thereby reducing device complexity while maintaining easy operation.
2Device complexity
If the illumination circuit requires pressing the end of the handle to activate, then the mechanism is simple, but children may have trouble activating it due to insufficient mechanical strength and dexterity
Solution Approach 1:
The activation mechanism is segmented into distinct functional zones within the base: a manipulation zone that requires minimal force to initiate, a spring compression zone that amplifies the activation, and a contact member zone that completes the circuit. This segmentation allows children to activate the device with gentle manipulation while the internal spring provides the necessary force amplification.
Solution Approach 2:
The spring acts as an intermediary between the user's gentle manipulation and the illumination circuit activation. When the base is manipulated, the spring compresses and stores energy, then releases this energy to reliably actuate the contact members, mediating between the user's limited input force and the circuit's activation requirements.
3Reliability
If a spring and contact member mechanism is implemented, then reliable circuit activation is achieved, but the assembly process becomes more complex
Solution Approach 1:
The spring, contact members, and their mounting structures are merged into a single base assembly that can be manufactured as one integrated component or pre-assembled unit. This merging reduces the number of separate parts that need to be handled during final assembly, making the manufacturing process more efficient while maintaining reliable circuit activation.
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
This design enables children to easily activate the toothbrush, promoting longer brushing times by providing a user-friendly mechanism for activating the illumination, encouraging better oral hygiene habits.
Implementation Method 1
An improved activation mechanism is provided including a power segment, an extension portion, and an activation portion. The activation portion can include a spring member and a contact member. Manipulation of a base can compress the spring member which can activate the contact member to complete an illumination circuit.
Data Source
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AI summary
A toothbrush can include a handle and a head. At least one bristle can be attached to the head. The toothbrush can also have an illumination member, an illumination circuit and an activation device. The activation device can include two contact members fixed in a non-contact position on an outside of the handle. A method can include causing conduction between the contact members to activate the illumination circuit. The toothbrush can be an electric toothbrush. The electric toothbrush can have an illumination member positioned such that light from the illumination member can be seen by a user in a mirror facing the user.