Ngàm gắn nón cho Quest (Quest Helmet Attachment)

Made an attachment for the cheap helmet I found online. It has the tactical railings and NVG holder so I wanted to try to make an Oculus helmet of sorts just as an experiment. 

V1:

The locking mechanism for the NVG mount just slots in place and is removed by tilting it. It's a bit flimsy but the Quest hasn't dropped when using it so far. You could use another NVG mount for a GoPro instead (like GoPro NVG Mount by snyz - Thingiverse). Does not move much when the side clips are used.

For the left and right locking mechanism on the rail, I used a spring from a broken mechanical keyboard switch. (Note that using two lefts or two rights would result in only one side locking in place.)

Things to improve:

• Troublesome to put on and remove.
• Side clips necessary to hold the Quest in place.
• Make the joints stiffer so that the Quest can stay in place after adjusting.
• The screws holding it in place unscrews itself when adjusting. (Requires constant tightening)
• Needs a screwdriver/hex tool to adjust and tighten the screws.
• Moving the Quest using the rail is kinda redundant. Probably better to remove it entirely. 
• Locking mechanism for the NVG mount is a bit flimsy.

V2:

Redone all of the parts. Much more stable compared to the 1st version; now being able to hold in place without the side clips. Still a bit shaky and requires tighter tolerances.  You can use the 2 free middle holes of the connector to further tighten the joints. 

*You can use this without the facial interface if you prefer.

*Used .6mm nozzle for the print in the picture and adjusted the 3D model from this. Not sure if normal PLA is good enough, used PLA+ for this print. PETG carbon fibre for the front clip and mount lock

Requires:

• 2 M4*30 screws/bolts, 2 washers, 4 M4 nuts (OR 2 M4 nuts and 2 Butterfly Nuts) for the connector (Better to use bolts and butterfly nuts as it is more convenient to use)
• 2 M4*8 for the helmet mount lock. You could use inserts/nuts here if you prefer. (In the picture it is directly screwed in without either)

Improved:

• Easier to put on and remove.
• No more side clips necessary.
• No more tools needed to tighten the screws.
• No more rail to print 
• Locking mechanism now works properly, the quest can be held up by the helmet properly. 

To improve:

• Improve tolerances to mitigate movement further.
• Still front heavy, unless weights are added on the back of the helmet.
• Separate the connector into two parts to get better adjustments.

*Probably better to buy better helmet straps that can be easily adjusted to balance the load on the head.

V3.1:

• Works best without the facial interface.
• Combined the previous versions into this one.  This is probably the last version for this project.
• You can use this without the facial interface and have the lens as close to your eyes as possible.
• This version is the best for people with spectacles/glasses and also have long fringe.

*Used .6mm nozzle and .2mm height for the print in the picture and adjusted the 3D model from the resulting tests.

Requires:

• 3 M4*35 screws/bolts for the gear locks
• 2 M4*35 and 1 M4*40 screw/bolt for the Rail Locking Mechanism 
• 2 M4*8 for the helmet mount lock
• 8 M4 nuts
• 2 springs 5-8mm (Strong springs)
  • V3.2 (Same Requirements plus…)
    • 2 M4 nuts 
    • 2 M4*12 screws

Improved:

• Even easier to put on and remove due to the rail 
• More adjustable than the previous versions

To improve:

• Better tolerances
• Rail mechanism a bit flimsy to use
• Needs better locking mechanism as the parts still move if some force is applied
• Pressure applied by the facial interface is uneven, making it a bit uncomfortable.

Check out Spiggytech's remix for this design as well: https://www.printables.com/model/656693-redux-quest-2-helmet-attachment

V3.2:

Adjustments made to the overall model in order to make it more stable. Now has minimal movement when using the facial interface. Added a quest 3 variant and a short rail version. If you are using the Quest 3 without the facial interface, print the spacer.

• Works best without the facial interface.
• Use the Cap from V3.1 and the 'ScrewFasteners' from V3.1/V2
• Same Requirements as V3.1 with additional 2 M4 nuts and 2 M4*12 screws (for the carrier)

*Note that the test model was printed with a .4mm nozzle, and the tolerances of the actual file were adjusted according to this print.

*Added an AVP version, but it is untested and is a very rough design (I do not have an AVP to test it on). Definitely needs heavy editing. Used Blender to make it

V3 Assembly Instructions:

1: Slot in the ‘ConnectorLimb’ to the ‘HelmetMount’ as shown

2: Insert an M4 nut for each of the three ‘ScrewFastener’

3: Screw in the M4*35 and tighten

4: Repeat for the ‘Rail’

5: Insert two M4 nuts into the ‘AdjustableCarrierPart’

6: Attach the ‘AdjustableCarrierPart’ to the ‘Adjustable Carrier’ and loosely screw in the two M4*15 screws

7: Slide this in to the ‘Rail’ and secure the ‘AdjustableCarrierPart’ to it just enough that you can still slide it on the rail, with minimal tilting movement. 

8: Insert 2 M4*35 screws/bolts into the Retainer through the ‘Rail’ and ‘Carrier’. Insert two springs then cap them off with 2 M4 nuts.

*Bolts are used in this example

9: Insert an M4 nut into the 'Cap'

10: Screw in the M4*40 into the middle part of the ‘Cap’

This should act as a button to unlock ‘Rail Carrier’ (make sure that there is enough space to press the springs down.

11: Attach the ‘Quest2/3_FrontClip’ to the whole mechanism and securely tighten with the ‘ScrewFastener’

12: Insert 2 M4 nuts below the ‘HelmetMount’

13: Once placed onto the NVG mount of the helmet, slot in the ‘Lock’ and screw in 2 M4*8 screws

14: To insert the Quest 2/3, hook the top part of the ‘Quest_FrontClip’ to where the top strap used to be and clip the bottom of the 'Quest_FrontClip' to the bottom of the Quest, on the boundary of the facial interface (Does not clip on the facial interface itself)

15: Ensure that the Quest is secure and does not fall off.