The ergonomic armrests are designed to fit the natural gripping posture of the hands, reducing the tension of the hand muscles when pushing. Ordinary armrests are mostly designed with straight bars. When holding, the fingers and wrists need to be deliberately adjusted to hold firmly. Long-term exertion will cause hand muscle fatigue. The curved surface of the ergonomic armrest fits the palm, the fingers can bend and wrap naturally, and the wrists remain in a neutral position. No additional force is required to maintain the gripping posture, reducing physical energy consumption from the source of hand force.
Its height is adapted to the drooping position of the human body when standing naturally, avoiding bending or raising the hand to exert force. When people of different heights push the steel platform trolley, if the height of the armrest is fixed, the short person needs to bend and the tall person needs to raise his hand, which will cause tension in the waist and shoulder muscles. The ergonomic armrests can be adjusted in height, or preset to the golden position that suits the height of most people, so that the elbows of the cart can be naturally bent about 90 degrees, the shoulders are relaxed and not raised, and the waist is kept straight, reducing muscle strain caused by improper posture and saving physical energy to maintain body balance.
The anti-slip material and texture design on the surface of the armrest reduce the extra force caused by hand slippage. When carrying heavy objects, hands are prone to sweating, and ordinary armrests may slip, forcing users to increase their grip to prevent slipping, which increases the burden on their hands. The rubber or silicone anti-slip layer of the ergonomic armrest, combined with the finger groove texture, can enhance friction, so that even if the hands are slightly sweaty, they can still hold firmly without excessive force, so that the hand force can be more concentrated on the pushing action and reduce ineffective consumption.
The arc armrest design guides the thrust direction to be consistent with the forward direction of the steel platform trolley, reducing the dispersion of force. Straight armrests may cause the thrust to deviate to both sides, and part of the force is wasted due to directional deviation, and more force is required to maintain a straight line. The arc curve of the ergonomic armrest naturally points to the front of the vehicle body. When the palm applies force, it can transfer the force to the steel platform trolley along the arc of the armrest, so the thrust is more concentrated, avoiding the extra consumption caused by force dispersion, and saving more effort under the same load.
The connection between the armrest and the body adopts an elastic buffer design to reduce the recoil force on bumpy roads. When pushing on rough ground, the vibration of the steel platform trolley will be transmitted to the arm through the armrest, and the vibration force will repeatedly impact the muscles, accelerating fatigue. The buffer structure of the ergonomic armrest can absorb some of the vibration, making the bumps felt by the hand softer. The arm muscles do not need to be tightened to resist the vibration, reducing the physical strength consumed by continuous shock resistance, and it is suitable for long-term use on uneven ground.
For users with different left and right hand habits, the symmetrical ergonomic armrest provides a consistent labor-saving experience. Ordinary unilateral armrests may overload the dominant hand, and the uneven force on the other side may cause the body to tilt. The symmetrically designed armrests allow the left and right hands to exert force evenly, keep the body balanced, avoid the tension of the waist and back muscles caused by excessive force on one side, make the whole body force distribution more reasonable, and naturally reduce the overall consumption.
In addition, the extended design at the end of the armrest provides a leverage point for sudden force, reducing instantaneous physical overdraft. When the steel platform trolley is started or encounters an obstacle and needs to be pushed hard, the grip range of ordinary handrails is limited and it is easy to slip out of the hand when exerting force. The widened or raised design at the end of the ergonomic handrail gives the palm a larger force application area, which can be used stably when exerting force instantly, avoiding the waste of explosive force caused by slipping or unstable grip, making instant force more efficient and reducing fatigue caused by sudden muscle tension.
