Padlock with Replaceable Door Cylinder for Compact Two-Wheeler Security
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Portable locks for two-wheelers face challenges in achieving reliable locking with a compact design, flexible handling, and simple assembly, particularly due to limited installation space and the need for a separate key for operation.
Innovation Solution
Incorporating a replaceable door cylinder with a cylinder housing, cylinder core, and locking lug, which allows for secure locking of the bracket's second end within the lock body using a key-based mechanism, enabling flexible and compact design while allowing compatibility with existing door locks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a reliable locking mechanism is implemented in portable locks, then security is improved, but the lock body size increases and portability is reduced
Solution Approach 1:
The locking mechanism components (locking cam, bolt element, door cylinder) are nested within the lock body in a compact arrangement. The locking cam is rotatably mounted inside the lock body, the bolt element is positioned within the lock body, and the door cylinder is inserted into the lock body, creating a nested configuration that maximizes space utilization while maintaining reliable locking functionality
Solution Approach 2:
The locking mechanism uses dynamic components including a rotatable locking cam that can rotate between locking and release positions, and a bolt element that can move between locked and unlocked positions. This dynamic design allows the locking mechanism to achieve reliable security through motion-based locking rather than requiring a large static structure
2Reliability
If a key-based locking mechanism is used, then security is improved, but the user must carry a separate key which reduces convenience
Solution Approach 1:
The door cylinder is designed as a replaceable component that can be exchanged for different key-coded cylinders. This allows the lock to be adapted to work with different keys, including the possibility of using a universal key system or matching keys with other locks, thereby reducing the need to carry multiple separate keys while maintaining secure key-based locking
3Volume of moving object
If the lock body is designed to be compact, then portability is improved, but the available space for locking components is reduced
Solution Approach 1:
The locking mechanism is segmented into distinct modular components: a locking cam, a bolt element, and a replaceable door cylinder. This segmentation allows each component to be optimized independently for compactness and ease of assembly, while the modular nature enables simple assembly and replacement without requiring complex integrated designs
4Ease of operation
If a permanent attachment of the shackle end to the lock body is made, then handling is simplified, but the locking mechanism design becomes more constrained
Solution Approach 1:
The first end of the shackle is permanently attached to the lock body in a manner that extends along the longitudinal axis, utilizing the longitudinal dimension of the lock body for attachment. This spatial arrangement provides stable handling while leaving other dimensions and orientations available for the locking mechanism components, effectively using dimensional planning to resolve the constraint
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
The invention relates to a padlock, in particular for two-wheeled vehicles, comprising a lock body and a flexible shackle, wherein a first end of the shackle is permanently fastened to the lock body and a free second end of the shackle can be inserted into the lock body or released from the lock body selectively. The lock body receives a replaceable door cylinder, which has a cylinder housing, a cylinder core and a closing latch, wherein the cylinder core is connected to the closing latch for conjoint rotation and, by means of an associated key, can be rotated about an axis of rotation between a releasing rotary position and a locking rotary position. Furthermore, a bar element which can be driven by a rotation of the closing latch is arranged within the lock body.