Automating Support in Running Shoes with Solenoids

A manufacturer of running shoes wanted their shoes to automatically adjust to the speed of the wearer, providing additional comfort and support. TLX designed a miniature solenoid air valve with magnetic latching technology to integrate into the shoe’s cushioning system.

Customer Problem

A manufacturer of running shoes wanted their shoes to automatically adjust to the speed of the wearer, providing additional comfort and support. To accomplish this, the manufacturer needed a solution that controlled the dispersal of air in the shoe’s dual-bladder cushioning system.

The TLX Solution

TLX designed a miniature solenoid air valve with magnetic latching technology to integrate into the shoe’s cushioning system. The unique design worked in conjunction with the cushioning system’s sensor to disperse air between the bladders. The design fit into the tight space in the sole of the shoe, provided the necessary flow parameters needed for the cushioning system and was also durable enough to withstand the constant pounding. The use of magnetic latching technology minimized power consumption and extended the life of the battery.

Miniature Solenoid Air Valve

Specifications
Coil resistance at 20°C
25 ± 2 Ω
Stroke
.1524 ± .0254 mm
Spring load (latched position)
1.81 N (6.5 oz)
Spring load (de-latched position)
1.72 N (6.2 oz)
Duty rating (%ED)
100%
Orifice size
1 mm (.039 in)
Supply voltage
3 Vdc
Current
150 mA
Max pressure
15 psi
Solenoid weight
14.17476 g (.5 oz) min

All TLX components are customized to fit system requirements, meaning technical specifications are unique to each customer and design. Examples given on our website are for illustration purposes only.