A steel lift arm with a gas spring that raises the slatted frame of a divan base at one long side.
Category: Beds › Single-Level Beds › Bed Lift Mechanisms
By Huu Khanh Nguyen · Updated November 9, 2026
| Name | Default | Unit |
|---|---|---|
| Length | armLength | mm |
| Depth | armDepth | mm |
| Drop | armDrop | mm |
| Arm Length | 710 | mm |
| Arm Depth | 30 | mm |
| Arm Drop | 106 | mm |
| Lift Angle | 0 | ° |
| Hinge Along | 0 | mm |
| Hinge Drop | armDrop - 13.5 | mm |
| Spring Run | (armLength + 387) / 2 - springX | mm |
| Spring Rise | -armDrop / 2 - springZ | mm |
| Spring Tilt | Math.atan2(springDz, springDx) * 180 / Math.PI | ° |
| Spring Start X | pivotAlong + (((armLength - 387) / 2) - pivotAlong) * Math.cos(angle * Math.PI / 180) - (pivotDrop - armDrop / 2) * Math.sin(angle * Math.PI / 180) | mm |
| Spring Start Z | -pivotDrop + (((armLength - 387) / 2) - pivotAlong) * Math.sin(angle * Math.PI / 180) + (pivotDrop - armDrop / 2) * Math.cos(angle * Math.PI / 180) | mm |