Ventilator Terminal Box With Plug-In Motor Connection for Fast Service
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Solution Overview
Problem
Existing ventilator connection devices require significant effort for maintenance and repair, as they need to be disconnected from the mains power supply and manually reconnected, making the process cumbersome and time-consuming.
Innovation Solution
A connection device with a terminal box that is releasably fixed to the appliance part via external screw connections and equipped with a rotary or sliding off switch, allowing for easy separation and reconnection of electrical plug-in connections, enabling the ventilator motor and pre-wired connection part to be maintained or replaced without opening the terminal box.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the terminal box is fixed to the appliance part with permanent connections, then the structural stability is improved, but the ease of repair deteriorates
Solution Approach 1:
The connection device is divided into two separable parts: a terminal box and an additional connection part. The terminal box contains the off switch and electrical contact elements, while the additional connection part has corresponding plug-in connector parts. This segmentation allows the terminal box to remain fixed to the appliance part for structural stability, while the additional connection part can be easily removed and replaced for maintenance and repair work.
2Reliability
If manual disconnection of line connections is required, then the reliability of power disconnection is improved, but the time consumption increases
Solution Approach 1:
The off switch is integrated into the terminal box and can be operated before removing the additional connection part. This preliminary action of switching off the power supply ensures safe disconnection conditions are established before any physical disconnection work begins, eliminating the need to open the terminal box to access the off switch and reducing overall time consumption.
Solution Approach 2:
The additional connection part serves as an intermediary component between the appliance part and the terminal box. It can be quickly removed to disconnect power lines without requiring manual disconnection of individual connections or opening the terminal box, significantly reducing time consumption while maintaining reliable power disconnection through the off switch.
3Ease of operation
If the terminal box is opened to disconnect connections, then the accessibility of connection points is improved, but the device complexity increases
Solution Approach 1:
The connection device is segmented into a terminal box and a separate additional connection part. The additional connection part contains the plug-in connector parts that can be easily removed, providing access to connection points without requiring the terminal box to be opened. This maintains ease of operation while avoiding the complexity of opening and closing the terminal box.
4Reliability
If the ventilator is disconnected from mains power supply, then the safety during maintenance is improved, but the productivity decreases
Solution Approach 1:
The off switch is made easily accessible through the terminal box design, allowing it to be operated as a preliminary action before removing the additional connection part. This ensures safety during maintenance by disconnecting power before any work begins, while the quick removal process minimizes the time the system is non-operational, thereby maintaining productivity.
Solution Approach 2:
The additional connection part acts as an intermediary that can be quickly removed to establish safe disconnection conditions. This allows maintenance work to begin promptly after removal, minimizing downtime and maintaining productivity, while the integrated off switch ensures safety is established before any disconnection work commences.
Data Source
AI summary
The invention relates to a ventilator, having an electrical ventilator motor and an electrical connection device for connecting electrical motor lines leading to the motor to external electrical connecting lines. The connection device has a terminal box mounted to a device part comprising electrical contact elements, and has an additional connection part, to which the motor lines are connected. The terminal box is releasably connected to the additional connection part via electrical plug-in connections.