pdf-page/gemma-4-e4b / tier-4-gp2y0d413k

この距離センサは、非常に詳細な外形寸法が示されているため、OpenSCADで完全に再現するには複雑なパス処理（`polyhedron`や高度なカーブ定義）が必要になります。しかしながら、提供された寸法図に基づき、主要なエンクロージャの形状を捉えた形でモデリングします。

座標系は以下の通りに設定し、「取付面(PWB / コネクタ側)」がZ軸の負の方向(-Z)に向くようにモデル化します。

```openscad
// Sharp GP2Y0D413K0F Distance Sensor Housing Model
// Coordinate System: Origin at the center of the main body. Z-axis depth, X-axis length, Y-axis height/width.
// PWB side is facing -Z direction.

// --- Global Parameters ---
unit = [1, 1, 1]; // Units are mm

// --- Constants derived from datasheet dimensions (approximations) ---
// Overall Length (X max): ~32 mm
// Overall Width (Y max): ~18 mm
// Overall Depth (Z total): The sensor housing spans about 18-20mm depth.

module main_housing() {
    difference() {
        // 1. Base Block (The overall plastic shell)
        // We define a slightly oversized block to accommodate all components.
        translate([0, 0, -5]) // Shift Z slightly so the origin is roughly centered within the depth
        cube([32 * unit, 18 * unit, 40 * unit]); // Large box: X=32, Y=18 (W), Z=40 (Depth)

        // 2. Internal Cutouts and Shaping

        // A. Main Sensor Body Core Shape
        // This defines the main volume that is shaped differently from a simple box.
        translate([0, -7.5, -15]) // Start position for the main body structure
        cube([30 * unit, 14 * unit, 28 * unit]);

        // B. Connector/PWB End Recess (Towards -Z)
        // This area needs to be slightly recessed or shaped for the PCB connection.
        translate([0, 0, -35]) // Far end of the sensor block
        cube([15 * unit, 8 * unit, 5 * unit]);


        // C. Sensor Window/Air Passage Cutout (Front face)
        // The primary sensing window cutout area.
        translate([0, 0, -32]) // Near the front-most point of the sensor block
        cube([25 * unit, 10 * unit, 3 * unit]);

    }
}


module details() {
    // This module handles smaller protrusions or defining internal structures.

    // D. LED Emitter Section (The visible part on the front)
    translate([0, -4, -25]) // Positioned near the sensor window area
    rotate([90, 0, 0]) {
        // Simple representation of the emitter assembly box
        cube([8 * unit, 16 * unit, 3 * unit]);
    }

     // E. Top/Bottom Mounting Slots (General shape approximation)
    translate([0, -5, 0])
    rotate([90, 0, 0]) {
        // A small rectangular feature for mounting or alignment pins on the top surface
        cube([30 * unit, 1 * unit, 2 * unit]);
    }

    // Note: Given that the datasheet only provides 2D projections (top and side views) 
    // and not a detailed cross-sectional model of every curve, this structure 
    // captures the primary bounding box and major cutouts.
}


// Final Assembly
color([0.7, 0.7, 0.7]) { // Light gray plastic representation
    main_housing();
}

color([0.2, 0.2, 0.2]) { // Darker color for detail/internal components
    details();
}
```