Harmonious design with technical details
The mechanical concept used in the early bird is characterised by five criteria:
- Use of two steel springs for consistently high restoring forces
- Finely adjustable spring force via an easily accessible crank
- Almost infinitely variable locking in any position
- Relaxing reclining position can be achieved
- Light and strong spring tension can be selected for both light and heavy users
A successful swivel chair concept also comes about because the components used are coordinated with each other – in the case of early bird, this applies to the backrest, the seat and the armrests. This results not only in a harmonious, appealing design, but also in a high level of functionality.
One example of this is the three-point connection of the backrest to the aluminium backrest frame: it is not screwed rigidly, but with integrated rubber elements. This provides additional flexibility towards the back and thus a further increase in comfort.
Two backrest heights also take into account different body sizes and proportions. An optional neck support can be attached to the high backrest, so the incline and height can be adjusted. The neck support proves to be pleasantly relieving, especially when the reclining position is used frequently – thanks to the soft padding.
The 3D armrests are another benefit of the early bird. The armrest pads move forward and inward on a circular path, enabling the arm position to be adjusted when working with a keyboard.
More than just a question of comfort
Thanks to the “Sedo-Lift” mechanism, the steel spring cushions the user when they sit down, regardless of the selected seat height. Gas springs cannot spring in the lowest position due to their design, whereas the Sedo-Lift mechanism perfectly absorbs any shocks. The seat height is hydraulically fixed and therefore, wear-free.
This height adjustment mechanism has been been developed through many different designs, since 1926! It has been tested over a million times, and therefore Sedus can offer a 30-year guarantee on this unit.
Another important feature is the sliding seat, which has a soft and flexible cushion. If the cushion is pushed forward, the seat substructure does not move with it, as it is connected to the mechanism and the backrest support. The person sitting forms the subsequent seat recess with their own body weight. The result: the seat cavity remains in the correct position in relation to the lordosis when in all positions, i.e. it does not move when the seat depth changes. This sliding seat with its ‘always correctly positioned seat cavity’ is another of Sedus' ergonomic successes. The user intuitively makes use of the entire length of the seat and the pelvis remains in contact with the backrest.
The ‘early bird’ has an anatomically shaped seat. As early as the 1970s, research by Sedus revealed that profiling the seat surface promotes a remarkably balanced distribution of pressure.
Similarly, the vertical profiling of the backrest has a direct link to the spine – combined with the curvature in the transverse direction, this also results in excellent comfort.
Proven ergonomics
Since 2000, Sedus Stoll AG has been working together with the ‘Aktion Gesunder Rücken e.V. (AGR)’ (Campaign for Healthier Backs). The AGR tests and certifies products that make a significant contribution to back health in a wide range of sectors – including preventative products. ‘early bird’ has been awarded this ergonomic seal of quality.
In all its variants, early bird is a formally classic, long-lasting piece of seating furniture with excellent ergonomic properties. Anyone who works at a computer workstation for long periods deserves the best seating furniture possible. Alongside a healthy lifestyle with plenty of exercise, an activity-appropriate work environment is essential for navigating a career with minimal health issues.
