Skip to main content Contact

Ergonomics

Health, safety and comfort are at the heart of ISRI's seating development. The biological functions and needs of the human body, as well as a thorough examination of the work environment, guide our seating design. Our experts work closely in the functional areas of development, design and ergonomics to combine all the requirements of ergonomic seating.

 

 

Focus on the people´s needs

Seating development adapted to the human body.

To meet the requirements of an ergonomically designed seat, it is important to understand the human body with its biological functions and needs. It is also necessary to carefully examine the work environment:

  • In which way is the seat being used?
  • How many hours a day is the seat used?
  • What are the requirements necessary to improve the work conditions?

These are the questions we focus on so that the driver can adjust the seat in an optimal way and improve his health and well-being.

 


 

 

DYNAMIC SEATS

Why is movement important and how can we incorporate more of it into the driver's and passenger's daily routine?

The body needs movement to help activate its metabolism and circulation to remain attentive and reactive. The spine and its intervertebral discs need movement to ensure the exchange of nutrients, which helps keeping the spine supple, flexible and able to absorb vertical shocks. In the long-term, an unequal distribution strain along the spine, resulting from an unhealthy seating position, is an additional risk factor related to lack of movement.

This is why, as part of the project “Movement in the Workplace,” we are continually researching new seat concepts that stimulate active driver movement and stop drivers from remaining in a static posture while they are seated.

Anatomically shaped and movably mounted seat contact surfaces follow the intuitive movement patterns of the driver while sitting. The positive effects of free movement benefit to the driver's metabolism while driving.

Johanna Keiner, Ergonomist ISRINGHAUSEN

HOW TO SIT CORRECTLY?

A good sitting posture is essential to stay attentive to both the control and traffic. However, it can also lead to complaints due to a permanently crooked or constant sitting posture. Consciously changing the sitting posture even while driving by adjusting the backrest or seat cushion tilt is particularly important.

It is therefore important to become familiar with the correct sitting posture.

DRIVING SITTING POSTURE

  • 1. feet on the pedal
  • 2. buttocks on seat
  • 3. back on backrest
  • 4. hands on steering wheel
  • 5. view out of windshield

HORIZONTAL ADJUSTMENT

Adjust individually according to: 

  • arm and leg length
  • reachability of pedals, steering wheel and instruments

HEIGHT ADJUSTMENT

  • adjust individually to lower leg length so that pedals can be passed through all the way without force

TILT ADJUSTMENT 

  • adjust up or down so that the thighs are supported without pressure

BACKREST ADJUSTMENT

  • 100° up to 115°

  • take an upright posture

  • lean back fully

  • do not squeeze abdomen

SHOULDER ADJUSTMENT

  • shoulders should have full contact with backrest surface

ARMRESTS

  • relieve back muscles

  • elbows rest easily, hands are on steering wheel

SEAT CUSHION ADJUSTMENT

  • pull forward, thights should be supported as much as possible
  • leave 2-3 fingerbreadth space between hollow of knee and front edge of seat cushion

SHOCK ABSORBER

  • shock absorbing system

  • adjustment depends on road condition; soft - flat roads / hard - bad roads

  • feet have to be on pedals any time

HORIZONTAL SUSPENSION

  • if needed unlock when transporting liquid loads or towing a trailer

QUICK RELEASE

  • easier entry and exit

  • last height adjustment is saved

LUMBAR SUPPORT

  • place pelvis at backrest

  • inflate until support is sensible without pressure feeling

  • spine is supported in its natural double S shape

SITE BOLSTER SUPPORT

  • inflate until support of back is felt gently without pressure feeling

  • back is supported sideways

BELT HEIGHT ADJUSTMENT

  • adjust individually to upper body length

  • safety belt runs over the shoulder without cutting the neck