Door Handle Fixing Device with Integrated Securing Driver
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing door handle attachment devices for modern locking systems with electrically controllable clutches are complex, require many parts, and lack security against unauthorized access, especially when trying to minimize installation space and play in the neutral position.
Innovation Solution
A structurally simple door handle fastening device with a bearing arrangement featuring a pin element, electrically controllable coupling, axial lock, and spring element, where the securing driver element is integrated to provide both axial securing and restoring force, ensuring the door handle is securely held in the neutral position and resistant to manipulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a door handle attachment device is designed with an electrically controllable clutch to allow power transmission only when authorized, then security against unauthorized access is improved, but the device complexity increases due to additional components and mechanisms
Solution Approach 1:
The patent combines the axial securing function and the driver function into a single integrated securing driver element. This element simultaneously prevents axial displacement of the bearing element and transmits the restoring force from the spring element to rotate the door handle into the neutral position. By merging these two functions into one component, the device complexity is reduced while maintaining the security features provided by the electrically controllable clutch mechanism.
Solution Approach 2:
The securing driver element serves multiple functions: it acts as an axial lock to prevent unauthorized axial displacement, serves as a driver to transmit restoring force for rotation, and works in conjunction with the electrically controllable clutch to provide security. This multi-functionality reduces the overall number of components needed in the system.
2Stability of the object's composition
If a spring element is added to provide restoring force for the door handle in the neutral position, then the door handle stability is improved, but the installation space required increases
Solution Approach 1:
The spring element is positioned and integrated within the compact bearing arrangement structure, nesting it efficiently within the available space. The securing driver element acts as a lever arm that efficiently transmits the spring force, allowing a smaller spring to achieve the required restoring moment, thereby reducing the overall installation space while maintaining door handle stability.
3Device complexity
If the securing driver element is arranged on the same side as the connecting element, then the number of parts is reduced and assembly is simplified, but unauthorized access to the internal mechanism becomes more difficult to prevent
Solution Approach 1:
The securing driver element is arranged on the same side as the connecting element to the electrically controllable clutch, allowing both elements to be accessed and secured together. This arrangement reduces the number of parts and simplifies assembly while the electrically controllable clutch remains protected behind the door plate, maintaining security against manipulation.
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 reduces the number of parts, enhances security by preventing unauthorized access, and maintains a high-quality feel with minimal play, while allowing bidirectional rotation and easy assembly, making it suitable for both left-hand and right-hand assembly.
Implementation Method 1
the bearing arrangement preferably has at least one spring element, by means of which the bearing element can be automatically rotated relative to the guide element about the axis of rotation into a neutral position
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention relates to a door handle mounting device (10) for attaching a door handle (12) to a door leaf (58) with at least one door plate (14) and with a bearing arrangement (16) which is suitable for use together with an electrically controlled clutch (28). A driver and an axial locking element of the bearing arrangement (16) are formed integrally as a locking driver element (24), which is arranged on the same side with respect to the door plate (14) as a connecting element (66) to the electrically controlled clutch (28). The invention further relates to a door lock.