Temperature Detection Holder with Tilting Head for Heater Contact
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Solution Overview
Problem
The mechanical characteristics of heat-resistant elastic members in temperature detection apparatuses affect detection precision, leading to increased costs due to the need for materials that resist creep deformation at high temperatures.
Innovation Solution
A temperature detection apparatus with a tiltable head member and base member configuration, where the head member is urged toward the measurement target, allowing precise positioning and improved detection element accuracy without the need for costly materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a heat-resistant elastic member is used to bring the detection element into pressure contact with the ceramic heater, then the detection element can be positioned, but the mechanical characteristics of the elastic member affect detection precision and cost increases due to the need for materials that resist creep deformation at high temperatures
Solution Approach 1:
The holder is divided into a base member and a head member that can move independently. The base member remains stationary while the head member moves in the thickness direction to contact the heater surface, allowing precise positioning without requiring the entire holder to be made of expensive heat-resistant elastic material.
Solution Approach 2:
The head member is designed to move dynamically in the thickness direction under the urging force of the elastic member, enabling it to adapt to surface irregularities and achieve precise contact with the heater. This dynamic adjustment eliminates the need for expensive creep-resistant materials while maintaining detection precision.
2Measurement precision
If the detection element is brought into pressure contact with the ceramic heater by elastic force, then temperature detection is enabled, but positional precision is compromised due to the compliance of the elastic member
Solution Approach 1:
By separating the holder into a base member and a movable head member, the design achieves both stable positioning (through the rigid base) and adaptable contact (through the movable head). This segmentation allows the detection element to maintain consistent positional precision while ensuring reliable contact with the heater surface.
Solution Approach 2:
The movable head member acts as an intermediary between the rigid base member and the heater surface. It transmits the urging force while allowing controlled movement to accommodate surface variations, thereby achieving both precise positioning and stable contact simultaneously.
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
Enhances positional precision of the detection element, reducing material costs while maintaining accurate temperature measurement.
Implementation Method 1
the head member is configured to be urged toward the nip forming member by the urging force and to tilt following a portion of the nip forming member opposing the head member
Data Source
AI summary
A fixing apparatus includes a first rotary member, a nip forming member, a second rotary member, a heating element, a temperature detection element, a holder configured to hold the temperature detection element, and an urging member configured to urge the holder toward the nip forming member to bring the holder into contact with the nip forming member. The holder includes a base member configured to receive an urging force from the urging member, and a head member to which the temperature detection element is attached, the head member being configured to be in contact with the base member and tiltable with respect to the base member. The head member is configured to be urged toward the nip forming member by the urging force and to tilt following a portion of the nip forming member opposing the head member.