Push Button Lock with Removable Cartridge for Tool-Free Code Setting
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Solution Overview
Problem
Existing push button locks face challenges in efficiently setting and altering security codes without tools, while maintaining design flexibility and reducing maintenance complexity, and in preventing damage from incorrect button engagement.
Innovation Solution
A push button lock mechanism assembled in a cartridge with a security-code controller that includes a lock pin, reset plate, and memory set/reset plates, allowing for tool-free code setting and alteration, with a rotatable lock pin and engaging pawl for simplified structure and reduced component count, and a cushion plate to absorb unlocking forces and prevent damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the block and case frame are detached to set or alter the security number, then the security code can be programmed, but the operation becomes complicated and time-consuming
Solution Approach 1:
The lock mechanism is divided into separable components: the case frame and the block can be easily detached from each other. This segmentation allows the block to be removed for code setting without requiring complete disassembly of the lock, significantly simplifying the operation and reducing the time required to program the security code.
Solution Approach 2:
The block containing the push buttons and code setting mechanism is extracted as a separate, removable component from the case frame. This extraction enables the user to access and modify the security code by simply removing the block, without needing to disassemble other parts of the lock mechanism, thereby improving ease of operation and reducing time loss.
2Stability of the object's composition
If multiple plate bodies are laminated in sequence in the case frame, then the structural integrity is maintained, but the design flexibility is limited
Solution Approach 1:
The internal structure is segmented into modular components including multiple plate bodies that can be laminated, a removable block, and separable case frame sections. This segmentation allows for both structural integrity through lamination and design flexibility through selective assembly and disassembly of different configurations.
Solution Approach 2:
The lock mechanism incorporates dynamic elements where the block can be detached and reattached, and the plate bodies can be laminated in different sequences. This dynamic design allows the same basic structure to adapt to different design requirements while maintaining structural integrity through the lamination of plate bodies.
3Ease of operation
If the push button is engaged with the key plate without proper positioning, then the door can be unlocked, but the push button may be bent or damaged
Solution Approach 1:
A positioning mechanism acts as an intermediary between the push button and the key plate, ensuring proper alignment and engagement. This intermediary structure guides the push button into the correct position during the unlocking operation, preventing lateral forces that could bend or damage the push button while maintaining the ease of unlocking function.
Solution Approach 2:
The design incorporates a cushioning or guiding structure that prepares the push button for proper engagement with the key plate before the unlocking force is applied. This beforehand positioning prevents misalignment and excessive stress on the push button, thereby protecting it from bending or damage while preserving the unlocking function.
Data Source
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AI summary
[OBJECT] To provide a push button lock which includes a mechanism and its components assembled in a cartridge for setting and storing a security code for locking and unlocking. The cartridge is detachably attached to the inside of a housing so that various designs are available on the surface of the housing. The lock is manufactured and designed in an efficient manner, and requires less maintenance, thereby facilitating mass production. The security code for the lock is easily and readily set or altered with the lock attached to a door and without using a tool. The lock has an increased protection function, thereby improving convenience and safety. Further, a streamlined design of the lock reduces the load applied to a lock pin, prevents damage by tampering and erroneously pushing the push buttons, and thereby enhancing safety in use and increasing productivity. [SOLVING MEANS] A housing 18 on which a plurality of depressible push buttons are located is provided. A lock pin 237 which moves axially with the push button 20 is provided and is engageable with and disengageable from the push button 20. A lock plate 155 is provided and formed with a plate key hole 211 and plate lock hole 211a. The lock pin 237 is insertable in the plate key hole 211, and the lock pin 237 abuts the plate lock hole 211a. A reset plate 154 is provided, and is parallel to the lock plate 155. A reset spring 205 is provided inside, and axial displacement of a lock pin 237 inserted via the reset spring 205 is maintainable and releasable. A driving cam 58 linked to a deadbolt lock 8 is provided, and the deadbolt lock 8 is rotatable and engageable with a movement area of the lock plate 155. The push button lock provided here controls a movement of the lock plate 155 via the lock pin 237 when the push button is pressed, and releases an engagement between the lock plate 155 and the driving cam 58. A security-code controller 149 which slidably stores the reset plate 145 and the lock plate 155 and are parallel to each other. The security-code controller 149 is detachably attached to the housing 18.