Pivoting Lever Roller Carrier for Sliding Door
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Solution Overview
Problem
Existing roller carriers for sliding doors require manual intervention to pivot the safety cam into the secure position during assembly, which complicates the production process and increases the risk of human error.
Innovation Solution
A roller carrier design featuring a pivoting lever with a control incline that automatically pivots the securing cam into the safety position using an elastic restoring force, facilitated by a spring tongue, allowing the safety cam to automatically engage and disengage from the restraining rib of the profile body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual intervention is used to pivot the safety cam into the secure position during assembly, then the safety cam can be positioned correctly, but the production process is complicated and human error risk increases
Solution Approach 1:
The pivoting lever with control incline automatically pivots the securing cam into the safety position through the interaction between the control incline and restraining rib during assembly, eliminating the need for manual intervention and reducing human error risk while maintaining reliable positioning
Solution Approach 2:
The control incline is pre-configured on the pivoting lever to automatically guide the securing cam into the correct safety position during the assembly process itself, so that the positioning action is performed in advance as part of the natural assembly sequence rather than requiring separate manual adjustment
2Productivity
If a pivoting lever with spring tongue is used to automatically pivot the securing cam, then manual intervention is eliminated, but the device structure becomes more complex
Solution Approach 1:
The spring tongue is integrally formed on the pivoting lever as a single plastic component, merging the lever and spring functions into one element. This reduces the number of separate parts and simplifies manufacturing while maintaining the automatic pivoting function that eliminates manual intervention and improves assembly speed
Solution Approach 2:
The pivoting lever is formed from plastic material that can be molded as an integral component with the spring tongue, combining structural and elastic functions in a single material element. This integration reduces part count and assembly complexity while enabling automatic operation
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
The solution enables automatic and reliable engagement of the safety cam, simplifying the assembly process and ensuring consistent safety positioning without manual intervention, enhancing production efficiency and safety.
Implementation Method 1
pivots back into a gripping position under the restraining rib by the elastic element that generates the elastic restoring force
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
In a roller carrier (1) of a sliding door fitting with a carrier (3) attachable to a sliding door (2), which carries a roller (4) that rolls along a guide (8) of a profile body (7) attachable to a body of a sliding door cabinet, and which has an anti-lift device with a locking cam (17) which, in a locked position, engages a locking section (10) of the profile body (7) in such a way that the roller (4) cannot be separated from the guide (8), and which can be moved from the locked position to a release position in which the roller (4) can be separated from the guide (8), wherein the locking cam (17) can elastically deflect from its locked position against a restoring force when the sliding door (2) is hung, which restoring force moves the locking cam (17) back into the locked position,According to the invention, the locking cam (17) is formed by one end of a pivot lever (15) pivotably attached to a horizontal web (6) of the U-shaped support (3) about a pivot axis (16), the arm (18) of which points towards the roller (4) has a control ramp (20) which runs against the locking section (10) when the sliding door (2) is engaged, in order to pivot the pivot lever (15) against the elastic restoring force.