Zugentlastung für Fahrrad-USB-Lader Kemo M172N

thingiverse

The Kemo M172N is a bicycle USB charger that utilizes the alternating current supplied by the hub dynamo to charge a mobile phone or power bank. By employing a powerbank capable of simultaneous charging and power draw, users gain a reliable 5V power supply for cycling excursions. A switch allows riders to seamlessly transition between lighting mode and charging mode. When mounted with the switch facing upwards, the USB port and cable guides protrude downwards, but unfortunately, this design choice neglects strain relief for the cables, leaving them vulnerable to damage from vibrations or accidental entanglement. This can render the charger unusable, causing inconvenience when navigation fails or a mobile phone cannot be recharged after a long day of cycling. To mitigate this issue, specific parts are available that can be used in conjunction with some DIY effort. The required materials include: * The specified parts * 2 M2 screws with lens heads (approximately 12-13 mm) * Bolts and nuts for the M2 screws (which will be integrated into one component) * Two-component adhesive * Five small screws (as depicted in the image) that are screwed and glued into pre-drilled holes on the housing, ensuring a stable connection. Alternatively, a very strong adhesive can be used with caution when pre-drilling. Additionally, I have applied Velcro to one side of the holder to facilitate securing USB plugs of various types without screws, utilizing a Velcro fastener for added stability. The power cables were also secured into the strain relief to prevent damage from vibrations or accidental entanglement.