Fire Alarm Device Mounting Prevention Mechanism
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Solution Overview
Problem
Existing fire alarm devices lack a mechanism to ensure proper power supply before installation, which can lead to incorrect or incomplete setup, and existing isolators do not prevent the installation of detectors without batteries.
Innovation Solution
A fire alarm device with a safety device that interrupts the battery contact and prevents mounting unless all batteries are properly inserted, using a securing means that can be easily removed and reinserted to ensure power supply before installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a battery compartment with battery contacts is provided in the fire alarm device, then the device can be powered by batteries, but the device can be mounted even without batteries inserted, leading to incorrect setup
Solution Approach 1:
The patent applies preliminary action by providing a securing means that is removed before mounting to enable power supply. The securing means is preliminarily in place to prevent mounting, and its removal is a prerequisite action that ensures batteries are inserted before the device can be mounted. This resolves the contradiction by making proper power supply a preliminary requirement rather than relying on complex prevention mechanisms during mounting.
Solution Approach 2:
The patent applies the taking out principle by extracting the securing means from the device before mounting. The securing means is a separate component that is removed to enable both power supply and mounting operations. This simple extraction mechanism avoids adding complex prevention systems while ensuring proper setup sequence.
2Object-affected harmful factors
If existing isolators are used to protect the battery, then the battery is protected when not installed, but the isolator does not prevent the installation of the detector without batteries
Solution Approach 1:
The patent applies multi-functionality by designing the securing means to serve multiple purposes: it protects the battery contacts when the device is not installed, prevents mounting without batteries, and enables mounting once removed. This single component replaces the need for separate protection and prevention mechanisms, resolving the contradiction between battery protection and installation prevention.
Solution Approach 2:
The patent merges the functions of battery protection and mounting prevention into a single securing means. Rather than having separate isolators for protection and separate mechanisms for prevention, the securing means combines both functions, simplifying the overall device while achieving both objectives simultaneously.
3Reliability
If a securing means is introduced into the housing to prevent mounting without batteries, then proper power supply is ensured, but the housing structure becomes more complex
Solution Approach 1:
The patent applies the disposable principle by using a simple, inexpensive securing means that is removed before mounting. The securing means is a basic mechanical component (such as a tab or latch) that serves its protective function temporarily and is then discarded. This approach ensures reliable power supply verification without adding permanent complex structures to the housing.
Data Source
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AI summary
Automatic fire alarm systems are typically used for the early detection of fires in public or private premises. Battery-operated fire alarm systems are particularly common in homes. The batteries are usually included in the packaging and must be inserted before initial use. To ensure a power supply before mounting the smoke detector, for example, on a ceiling, some smoke detectors prevent installation without a battery.For this purpose, a fire alarm device 3 for a building, with at least one battery 7a, b for supplying power to the fire alarm device 3, is proposed, comprising a housing 4, wherein the housing 4 has a battery compartment 5 for receiving the battery 7a, b, wherein the battery compartment 5 has at least one battery contact 8 for contacting the battery 7a, b, wherein the housing 4 has a mounting side, wherein the housing 4 can be mounted with the mounting side on a mounting surface, with a locking device 1, wherein the locking device 1 can be arranged on the mounting side, wherein the locking device 1 interrupts the contact between the battery 7a and the battery contact 8 and at the same time prevents the housing 4 from being mounted with the mounting side on the mounting surface.