Inkjet Head Module Positioning With Inclined Contact Surfaces
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Solution Overview
Problem
Existing inkjet image forming apparatuses face challenges in accurately adjusting the position of the head module due to rattling and eccentric movements between separate components, which hinder precise positioning in the first direction.
Innovation Solution
The apparatus incorporates an adjustment member with an inclined abutting portion and a biasing member to convert movement in the second direction into movement in the first direction, ensuring stable and accurate positioning of the head module.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If separate components (operation member and adjustment block) are used for position adjustment, then the structure is easier to manufacture and assemble, but rattling and eccentric movements occur between components, reducing positioning accuracy
Solution Approach 1:
The adjustment block is integrated into the operation member to form a unified adjustment member. This merging eliminates the interface between separate components, thereby eliminating rattling and eccentric movements that occurred at the interface, while maintaining ease of manufacture through the modular design of the integrated component.
2Device complexity
If separate components are used for adjustment mechanism, then device assembly is simplified, but contact instability between components occurs during movement, reducing reliability
Solution Approach 1:
By integrating the adjustment block with the operation member, the invention eliminates the contact interface between separate components. This unified structure ensures stable and reliable contact throughout the adjustment process, as there is no separate interface that could become unstable during movement.
3Ease of operation
If inclined surfaces are used to convert movement direction, then position adjustment in the first direction is achieved, but eccentric movement of the contact part relative to the axial center occurs, reducing positioning precision
Solution Approach 1:
The integration of the adjustment block with the operation member ensures that the contact part moves concentrically with the axial center of the operation member. This unified structure eliminates eccentric movement that would occur with separate components, while the inclined surfaces continue to effectively convert movement in the second direction to adjustment in the first direction.
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 configuration allows for high-accuracy adjustment of the head module's position with respect to the mounting base, minimizing rattling and eccentric movements, thereby enhancing positional stability and precision.
Implementation Method 1
A ball plunger that biases the abutted portion toward the abutting portion is provided at an appropriate position in the mounting base.
Implementation Method 2
In order to convert the movement of the operation member in the second direction into the movement of the head module in the first direction, each of the abutted portion on the head module side and the abutting portion of the adjustment block is an inclined surface inclined with respect to the second direction.
Implementation Method 3
when the operation member is rotated by a rotating operation, the adjustment block moves in the second direction (the axial direction of the operation member) by the screwing action of the screw of the operation member and the screw hole of the adjustment block.
Data Source
AI summary
In an inkjet image forming apparatus, a head module is provided in a mounting base so as to be positionally adjustable in a first direction, and an adjustment member is provided in the mounting base so as to be movable in a second direction intersecting the first direction. The adjustment member includes an abutting portion that makes into contact with an abutted portion on the head module side, and the first biasing member biases the abutted portion to the abutting portion side. At least one of the abutted portions and the abutting portion is an inclined surface inclined with respect to the second direction.