Fixing Device Bracket for Spring Mounting
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Solution Overview
Problem
The existing image forming apparatuses face difficulties in mounting the coil spring with strong tension, which reduces workability due to the need for manual hooking, making it challenging to assemble the fixing device effectively.
Innovation Solution
The apparatus incorporates a bracket with a hooking portion and an urging portion, utilizing a tension coil spring to pull the rotators together, and a positioning member to regulate the bracket's movement, allowing for simpler mounting by leveraging the principle of a lever with a screwdriver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a coil spring with strong tension is used to pull the heating roller and pressurizing roller together, then the fixing force is improved, but the ease of mounting deteriorates because manual hooking is required
Solution Approach 1:
A bracket is introduced as an intermediary component between the coil spring and the supporting member. The bracket includes a hole that receives an inserting member (such as a screwdriver or specialized tool) to facilitate mounting. This mediator allows the strong-tension coil spring to be installed without requiring direct manual hooking, thus resolving the contradiction between maintaining strong fixing force and improving ease of mounting.
2Reliability
If a coil spring with strong tension is used to ensure proper pressure, then the reliability of image fixing is improved, but the device complexity increases due to the need for specialized mounting procedures
Solution Approach 1:
The bracket serves as a mediator that simplifies the mounting procedure while maintaining the strong tension required for reliable image fixing. By providing a structured interface with a hole for inserting members, the bracket reduces mounting procedure complexity without compromising the coil spring's tension and thus the reliability of the fixing process.
Solution Approach 2:
The mounting function is segmented into two parts: the bracket structure that provides the mounting interface, and the coil spring that provides the tension. This segmentation allows the mounting complexity to be handled by the bracket design while the coil spring focuses solely on providing the necessary fixing force, thereby improving reliability without excessive overall 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
This design simplifies the mounting process of the spring, reducing the effort required and eliminating the need for specialized tools, thereby improving the assembly efficiency and workability of the fixing device.
Implementation Method 1
a coil spring having strong tension
Data Source
AI summary
A first supporting member which rotatably supports a first rotator, a second supporting member which rotatably supports a second rotator, a bracket which is mounted in the second supporting member distant from the fastening portion of the first supporting member, an urging portion which is disposed between a fastening portion and the bracket, and urges the first rotator and the second rotator so as to be pulled to each other. The bracket is formed with a hooking portion on one end side of the main body portion and a hole where an inserting member can be inserted in an oblique direction from the other end side of the main body portion toward the hooking portion, the second supporting member includes a positioning member which supports the hooking portion of the bracket and regulates movement of the other end side of the bracket on which the urging portion is mounted.