Combination Padlock Housing Segmentation for Intuitive Mode Entry
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Solution Overview
Problem
Existing combination padlocks are difficult to use, especially for those with limited motor control or low hand strength, due to non-intuitive steps for entering and maintaining the combination setting mode, and users often struggle to confirm if the padlock is in the correct mode.
Innovation Solution
A combination padlock design featuring a movable second housing part that axially separates from the first housing part and rotates to expose a surface, maintaining displacement and engaging formations to prevent mode exit, with a helical screw thread mechanism and biasing means to facilitate mode entry and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the combination locking assembly uses a traditional shank rotation mechanism to enter combination setting mode, then the locking assembly can be reset, but the process is difficult and non-intuitive requiring multiple steps that are easily forgotten
Solution Approach 1:
The housing is divided into a first housing part and a second housing part that can move relative to each other. The second housing part can be displaced axially and rotated independently to expose the upper surface with formations, providing clear visual and tactile feedback that the combination setting mode is active, making the operation intuitive and memorable
Solution Approach 2:
The invention uses visual feedback through exposing the upper surface of the second housing part with formations when in combination setting mode. This visual indication (analogous to color change principles) provides immediate confirmation to the user that the correct mode is active, eliminating uncertainty about whether the padlock is properly configured for combination setting
2Adaptability or versatility
If the shank must be held at a specific displacement to maintain combination setting mode, then the mode can be maintained, but users with limited motor control or low hand strength struggle to maintain the required force
Solution Approach 1:
The second housing part is designed to be movable relative to the first housing part through axial displacement and rotation. This dynamic mechanism allows the housing parts to self-engage through formations that maintain the combination setting mode without requiring continuous user force, making it accessible to users with limited motor control
Solution Approach 2:
The formation engagement mechanism between the first and second housing parts automatically maintains the combination setting mode once entered. The mechanical interlocking through formations provides self-sustaining mode maintenance without requiring continuous user intervention or force application
3Adaptability or versatility
If the combination setting mode entry process requires multiple intuitive steps, then the mode can be entered, but users are unsure whether the padlock has successfully entered the mode
Solution Approach 1:
The invention provides visual feedback by exposing the upper surface of the second housing part with formations when combination setting mode is active. This visual indication clearly distinguishes between locked, unlocked, and combination setting modes, making mode status easily detectable
Solution Approach 2:
The housing is segmented into two parts that can be visually distinguished when separated. The exposure of the upper surface with formations creates a clear visual boundary and indication that the combination setting mode is active, providing immediate feedback to the user
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
Simplifies the process of entering and maintaining the combination setting mode, providing clear visual and tactile cues for users and improving accessibility for those with dexterity or strength limitations.
Implementation Method 1
a helical screw thread mechanism and biasing means to facilitate mode entry and stability
Implementation Method 2
biasing means to facilitate mode entry and stability
Data Source
Figure 1~2
Figure 3a~3b
Figure 4a~4c
AI summary
Some designs of combination padlock allow users of the padlocks to set the combinations that unlock the padlocks. However, the operations which a user must perform to set the combination of a padlock typically involve manipulating the shank of the padlock by pulling the shank away from the housing of the padlock or pushing part of the shank further into the housing of the padlock, rotating the shank through a certain angle, and holding or fixing the shank in this position while rotating dials of the padlock to change the combination. Such operations are fiddly, and it can be difficult to remember what steps are required to change the combination. Thus there is provided a combination padlock which goes some way towards overcoming or at least ameliorating one or more of the above problems.