Checking Jig for Sunvisors

The checking jig that you can see in this video provides a full check of a sunvisor, with:

• Check of the part geometry: The length of the sunvisor is checked by a dial indicator, and its exterior shape by gap and flush.
• Check of the part forces: the checking jig has an area to adapt a dynamometer to check the torque of the part when pulled down and rotated. These movements correspond to those done in the car: close the sunvisor on the roof, or turn it against the car window.
• Check of the sunvisor mirror light: when lifting up the protection cover of the mirror, a lamp is to light on. This check is made by a power supply box connected to the parasol connector.

To carry out these various checks, three different types of fixations have had to be adapted to the part:

• 1. a system to adapt the sunvisor real fixations (see 0:17 of the video): adapting the real elements used to mount the part on the vehicle is necessary for the checks to be realised by dynamometer. Indeed, these checks could be made while the part is fastened to machined blocks, but these blocks cannot reproduce the same force as the sunvisor real fixations; consequently, to get real results, the part has to be mounted in its vehicle conditions.
• 2. the master version of the sunvisor real fixation (see 0:22 of the video): this part is a perfect copy of the real hook mounting the sunvisor in the car; it is used to mount the sunvisor and verify its exterior shape. The master version has a system with a spring (0:24) ensuring that the part is correctly mounted.
• 3. sliding block: this fixation is mounted on a sliding system to adapt itself to the sunvisor length. Once the part is mounted, its length is verified thanks to a dial indicator point.

Finally, the checking jig is equipped with an area allowing to adapt the connector of the mirror lamp cluster to a power supply box. The connector cable goes through a hollow area (0:35) to set it aside from the sunvisor clip – which helps fixing it to the jig more easily – and is connected to the power supply box (violet in this jig), mounted on the side of the jig.

We also have a long version of this video available, with detailed explanations of the engineer that designed this checking jig.

Long version of the video of the checking jig for sunvisors