Panic Door Push Rod Linear Guide Actuation
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Solution Overview
Problem
Existing panic doors with push rods often experience lateral movement when actuated perpendicularly, leading to irritation and unreliable actuation, as they are not designed to guide the user's motion effectively for opening the door in emergency situations.
Innovation Solution
A door device with a push rod mounted on a linear guide perpendicular to the door leaf, coupled with a transmission device that converts the push rod's movement into a suitable action for the door lock, ensuring clear and reliable actuation, and an optional electrically actuable blocking device with an emergency stop button for enhanced security and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a push rod is mounted without a linear guide, then the structure is simpler, but the push rod performs lateral movement when actuated perpendicularly, leading to irritation and unreliable actuation
Solution Approach 1:
A linear guide is introduced as an intermediary component between the push rod and the door leaf. The linear guide constrains the push rod to move only in the perpendicular direction, preventing lateral movement while maintaining the simplicity of the push rod actuation mechanism.
Solution Approach 2:
The mounting structure is segmented into separate functional components: the push rod for actuation, the linear guide for directional constraint, and the transmission device for motion conversion. This segmentation allows each component to perform its specific function optimally without interfering with others.
2Reliability
If the push rod is guided on a linear guide, then the actuation becomes reliable and clear, but the device complexity increases
Solution Approach 1:
The linear guide serves multiple functions simultaneously: it guides the push rod movement, prevents lateral displacement, and provides a mounting structure for the transmission device. This multi-functionality reduces the need for additional separate components.
Solution Approach 2:
The linear guide and transmission device are merged into an integrated assembly where the transmission device is mounted directly on the linear guide structure. This combining reduces the number of separate parts and simplifies the overall device while maintaining reliability.
3Ease of operation
If an energy store is added to ensure door opening without repeated actuation, then the ease of operation improves, but the device complexity and manufacturing cost increase
Solution Approach 1:
The energy store is pre-charged during normal door operation or installation, storing mechanical energy in advance. When the push rod is actuated in an emergency, this pre-stored energy is released to ensure the door opens without requiring repeated actuation, thus improving ease of operation during critical moments.
Solution Approach 2:
The energy store mechanism is designed to automatically release its stored energy when triggered by the push rod actuation, without requiring additional user input or complex control systems. The mechanism serves itself by converting the stored energy directly into the door opening action.
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 provides a clear and reliable method for opening panic doors by guiding the user's motion effectively and incorporating a secure, energy-storing mechanism to ensure the door can be opened without repeated actuation, enhancing safety and usability in emergency situations.
Implementation Method 1
the push rod is arranged on a linear guide, with the guide axis of the linear guide being perpendicular to the door leaf
Implementation Method 2
the sliding guide can be designed as a rail guide. The rails can have a prismatic cross-section, for example, and can be formed from an extruded profile
Implementation Method 3
the linear guide is designed as a roller guide
Implementation Method 4
the linear guide is designed as a screw spindle gear. This design is particularly advantageous if the linear actuation path of the push rod is to be converted into a rotary movement
Implementation Method 5
an energy store, in particular in the form of a spring accumulator, is arranged between the push rod and the blocking device
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A door device, preferably located in an escape and rescue route in a building, is described, comprising a door frame, a door leaf movably, preferably pivotably, mounted thereon, and a door lock device. The door lock device includes an operating handle, designed as a push bar (11), a pull bar, or a door handle, a door lock (6), and a transmission device that converts a movement of the operating handle (11) relative to the door leaf (4) into a movement for actuating the door lock (6).