Joolz Day Sun Canopy Support Fix – Clip-On Reinforcement for Worn Mechanism

This is a simple clip-on reinforcement I designed to fix the worn sun-canopy mechanism on the Joolz Day stroller. On older Joolz models, the canopy hinge can loosen over time and no longer stay in position. These two printed parts strengthen the mechanism by a spring-loaded slider which is inhibited by recesses on the relief-clip, so the canopy remains open instead of folding back down on its own. 

Additional bonus: In addition to the original resting positions of 0° and 90°, you have another resting position of approximately 60 degrees at your disposal.

Both parts can be installed easily without modifying the stroller:

1. Unscrew the  black M4 Phillips screw holding the canopy bar.
2. Remove the canopy bar
3. Clip the printed pieces onto the existing mechanism
4. Insert the bar back in through the upper piece
5. Re-screw and done.

I recommend replacing the Phillips M4 screw with an M4 screw that has a larger cylinder head, as this improves stability and usability.

This model may also fit other early Joolz strollers (e.g. Geo, Aer) that use the same canopy hinge design, but it has only been tested on the Joolz Day (1).

If you print and use it, feedback or photos are appreciated! With this, I can update tags accordingly and help others find the models easier. Enjoy giving your stroller’s canopy a second life.

Printing notes:

Printing orientation: Print the slider sideways. If you use support, only support manually at the outer regions. Support inside the model will be hard to remove. Print the relief clip on its large flat surface.

Strength: Use enough walls (at least 3..4) to get enough strength. Especially the spring must be printed completely filled!

Use PETG or similar material, which can handle bending.