Gears and transmission
Adjustable Phone Stand - Base, Sector-Gear Support, Drive Pinion
- Bounding box
- 365.5 × 75.0 × 89.5 mm
- Engine
- Precision B-rep
- Parameters
- 29
- Published
- October 17, 2026
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The prompt
Create a detailed 3D-printable adjustable smartphone stand inspired by the reference image. Use a modern, compact industrial design with a black matte finish. Create 3 main components: **1. BASE** - Dimensions: approximately 110 × 75 × 18 mm. - Stable rectangular base with rounded edges. - Integrated supports and mounting points for the adjustment mechanism. - Reinforced structure to prevent tipping. **2. CURVED PHONE SUPPORT WITH SECTOR GEAR** - Curved ergonomic backrest with a large curved sector gear along its outer edge. - Integrate a horizontal front lip to prevent the smartphone from sliding. - Phone compatibility: approximately 60–90 mm wide and 8–12 mm thick. - Add a protective contact surface with rounded edges. - Include a precisely centered pivot hole. - The curved gear teeth must follow a consistent circular path around the pivot. - Make the support strong enough for repeated angle adjustments. **3. SMALL DRIVE GEAR** - Compact pinion gear mounted beside the base. - Teeth must mesh with the curved sector gear. - Include a centered axle hole and enough clearance for free rotation. - Design the gear mechanism to adjust the phone viewing angle smoothly. **MECHANICAL REQUIREMENTS** - Keep all 3 components separate and identifiable. - Design the pivot and gear mounting interfaces carefully. - Avoid overlapping geometry and zero-thickness surfaces. - Use consistent gear tooth spacing and realistic mechanical proportions. - Do not add decorative parts, logos, or unnecessary details. **3D PRINTING** - Optimize for FDM printing. - Use strong walls and reinforced load-bearing areas. - Provide an assembled view and an exploded view. - Export each component separately as an STL mesh at real-world scale in millimeters. Prioritize mechanical appearance, component separation, stability, and functional design over visual styling. Do not claim the gears are mechanically accurate unless their geometry has been verified in CAD.
Parameters
| Name | Value | Range |
|---|---|---|
| Base Length | 110 mm | 60 – 160 |
| Base Width | 75 mm | 40 – 120 |
| Base Thickness | 18 mm | 8 – 40 |
| Base Corner Radius | 8 mm | 0 – 20 |
| Pivot Boss X Position | -30 mm | -50 – 50 |
| Pivot Boss Diameter | 18 mm | 8 – 30 |
| Pivot Boss Height | 22 mm | 5 – 45 |
| Drive Boss X Position | 20 mm | -50 – 50 |
| Drive Boss Diameter | 16 mm | 8 – 30 |
| Drive Boss Height | 22 mm | 5 – 45 |
| Pivot Pin Hole | 8 mm | 3 – 16 |
| Drive Axle / Pinion Bore | 5 mm | 2 – 12 |
| Backrest Width | 95 mm | 50 – 140 |
| Backrest Height | 85 mm | 40 – 130 |
| Backrest Thickness | 10 mm | 4 – 25 |
| Backrest Corner Radius | 8 mm | 0 – 25 |
| Front Lip Width | 70 mm | 20 – 140 |
| Lip Bottom Height | 4 mm | -10 – 40 |
| Lip Top Height | 18 mm | 0 – 60 |
| Lip Protrusion | 16 mm | 3 – 40 |
| Sector Pitch/Base Radius | 55 mm | 30 – 90 |
| Sector Tooth Height | 4.5 mm | 1.5 – 10 |
| Sector Tooth Count | 25 teeth | 8 – 60 |
| Sector Start Angle | -150 deg | -200 – -90 |
| Sector End Angle | -30 deg | -100 – -10 |
| Pinion Module | 1.5 mm | 0.5 – 4 |
| Pinion Tooth Count | 12 teeth | 8 – 40 |
| Pinion Width | 8 mm | 3 – 20 |
| Exploded Layout Gap | 150 mm | 60 – 400 |
Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.
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