Heating Unit Clip Structure to Prevent Heater Detachment
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Solution Overview
Problem
The heater in conventional heating units can accidentally detach from the holder during assembly, posing a risk of loss or damage.
Innovation Solution
A heating unit design incorporating a clip that nips the holder and stay together, with a first part overlapping the heater to restrict detachment, ensuring secure assembly and preventing accidental detachment during assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the heater is held only by engaging portions of the holder and stay, then the assembly structure is simple, but the heater may accidentally detach from the holder during assembly
Solution Approach 1:
The retention mechanism is divided into two independent parts: (1) the engaging portions between holder and stay for basic retention, and (2) the clip with first part overlapping the heater for additional security. This segmentation allows each component to perform its specific function without interfering with the other, solving the contradiction by adding reliability through modular addition rather than redesigning the entire assembly structure.
Solution Approach 2:
The first part of the clip is designed to overlap with the heater before the heater is fully assembled into the holder. This preliminary positioning action restricts the heater's movement in advance, preventing accidental detachment during the assembly process. The overlapping structure acts as a preliminary constraint that guides and secures the heater in place before final assembly is complete.
2Reliability
If a clip is added to nip the holder and stay, then the heater detachment is restricted, but the assembly complexity increases
Solution Approach 1:
The clip is designed to be self-retaining through its elastic deformation capability. When the clip nips the holder and stay together, its own elasticity provides the retaining force without requiring additional fasteners or complex locking mechanisms. The clip serves itself by using its material properties to maintain the attachment, thereby improving reliability without proportionally increasing assembly complexity.
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 clip effectively prevents the heater from detaching from the holder during assembly, enhancing assembly stability and reducing the risk of damage, while allowing for easy assembly and disassembly.
Implementation Method 1
a resistance heating element provided on the base plate
Implementation Method 2
The clip nips the holder and the stay to retain the holder on the stay
Data Source
AI summary
A heating unit includes a heater, an endless belt circularly movable around the heater, a holder, a stay, and a clip. The heater includes a base plate elongated in a long-side direction, and a resistance heating element provided on the base plate. The endless belt has an inner circumferential surface in contact with a first surface of the heater. The holder supports a second surface of the heater. The stay supports the holder. The stay is positioned opposite the heater with respect to the holder. The clip nips the holder and the stay to retain the holder on the stay. The clip has a first part overlapping with the heater when viewed in a thickness direction of the base plate to restrict the heater supported by the holder from getting detached from the holder.