Dual Lock Assembly With Preassembled Password Mechanism
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Solution Overview
Problem
Existing dual locks with complex structural designs face issues of difficult assembly, high costs, low yield, and maintenance challenges due to internal mechanism interference and compression, affecting smooth operation and hand feel.
Innovation Solution
The dual lock assembly structure pre-assembles internal mechanisms within a housing, allowing for modular installation, reducing interference and facilitating assembly while maintaining smooth operation and hand feel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the lock housing is formed by assembling front half and back half with internal mechanisms, then the lock can be manufactured with modular components, but the housing compresses the internal mechanisms affecting smooth operation
Solution Approach 1:
The password mechanism is pre-assembled and preliminarily positioned within the lock housing before the final assembly step. The number wheels and wheel barrels are installed on the spindle and secured with fixing wings, creating a pre-assembled unit that is then installed as a complete module into the lock housing, avoiding compression during final assembly.
Solution Approach 2:
The lock housing is divided into front half and back half that are engaged together, with the password mechanism as a separate modular component. This segmentation allows the internal mechanisms to be assembled and tested independently before final installation, reducing compression effects from housing assembly.
2Ease of manufacture
If the lock is assembled into housing one by one, then all components can be installed, but the assembling process becomes difficult and time-consuming
Solution Approach 1:
The password mechanism components (number wheels, wheel barrels, spindle) are pre-assembled into a complete functional unit before installation into the lock housing. This preliminary assembly reduces the final assembly steps and time required.
Solution Approach 2:
Multiple components (number wheels, wheel barrels, spindle, fixing wings) are merged into a single pre-assembled password mechanism unit that is installed as one module, reducing the number of separate assembly operations required.
3Productivity
If the internal mechanisms are assembled in advance and installed into one housing, then assembly is facilitated, but the components need to be precisely positioned to avoid interference
Solution Approach 1:
The password mechanism is pre-assembled with precise positioning of the spindle, number wheels, and wheel barrels before installation into the lock housing. The fixing wings are pre-formed on the wheel barrels to ensure correct positioning when the mechanism is installed as a unit.
Solution Approach 2:
The lock housing serves as an intermediary structure with a specifically designed containing space that receives and positions the pre-assembled password mechanism. The housing provides reference surfaces and mounting features that ensure precise positioning of the internal mechanisms without requiring high-precision machining of each component interface.
Data Source
AI summary
A dual lock assembly structure includes a lock housing, a password mechanism, a key lock core and a closed casing. The password mechanism includes a wheel pack, a password control module and a lock core control member. The password control module includes a roller seat and a control plate for clamping the wheel pack to be installed together with the key lock core in the lock housing. A closed casing is provided for covering. Therefore, it reduces the interference effect of the lock housing or the closed housing on the password mechanism to maintain its smoothness in operation and handfeel, while facilitating the assembly of the product.