ATM Drawer Front Panel Interlock to Prevent Casing Collision
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In automatic teller machines, the projection on the front panel can collide with the lower casing when the upper unit is pushed back into the casing, potentially damaging the front panel.
Innovation Solution
A push-in restriction section is implemented to prevent the subunit from colliding with the casing by restricting its movement when the front panel is open, using a mechanism like a knock lever that contacts the lower casing before the projection, thereby preventing damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the pivot shaft is positioned to preserve strength in the front panel frame, then the structural strength is improved, but the projection extends further downward and may contact the lower casing causing damage
Solution Approach 1:
A push-in restriction section is introduced as an intermediary component between the projection and the lower casing. This restriction section prevents the projection from contacting the lower casing when the front panel is in the open state, thereby eliminating the collision damage risk while maintaining the structural strength benefits of the pivot shaft positioning.
Solution Approach 2:
The push-in restriction section applies a preliminary restraining force to prevent the harmful collision before it can occur. By restricting the push-in movement of the front panel when in the open state, the system proactively prevents the projection from making contact with the lower casing, rather than reacting after damage occurs.
2Ease of operation
If the front panel is allowed to swing freely for easy operation, then the ease of operation is improved, but the reliability is reduced due to potential collision damage
Solution Approach 1:
The push-in restriction section dynamically adjusts the movement constraints based on the front panel state. When the front panel is closed, normal push-in movement is allowed for easy operation. When the front panel is open, the restriction section activates to prevent push-in movement that would cause collision, thereby maintaining reliability without compromising ease of operation.
Solution Approach 2:
The push-in restriction section serves as a mediator that selectively permits or restricts movement based on the operational state. It allows free movement during normal closed-state operation while preventing harmful movement during open-state, thus reconciling ease of operation with reliability.
3Device complexity
If no push-in restriction is provided, then the device complexity is reduced, but the reliability of damage prevention deteriorates
Solution Approach 1:
A push-in restriction section is introduced as a relatively simple intermediary component to prevent collision damage. This addition maintains reliability by preventing the projection from contacting the lower casing, while the design keeps the increase in device complexity minimal through straightforward mechanical implementation.
Data Source
AI summary
The drawer device includes a casing including a specific internal space, a unit that adopts a pulled out state by being pulled out forward from a housed state of being housed in the casing, a subunit in the unit that adopts an open state in which the unit interior is open to the outside by swinging in an opening direction, and adopts a closed state in which the unit interior is closed off from the outside by swinging in a closing direction, and a push-in restriction section that restricts movement of the unit toward the casing when the unit is moved toward the casing with the subunit still in the open state. The subunit swings about a pivot point in the vicinity of a lower end portion of the unit.