Hard-Hat Clipable Safety Notification System (#2)

in CAD Design held by John Tom
Contest Ended, Winner(s) have been selected.
Description:
We were very happy with the results from our first design concept competition so we decided to host another Cad Crowd competition but focus more on designing to a specific PCB and shape this time.

We're looking for small, sleek, manufacurable, and aesthetic designs for a hard-hat clipable safety notification system for construction workers to improve their work safety. The device can sense dangers with internal electronics and alert the user real-time using light and sound notifications.

The device will be clipped to the under-side of the hard-hat (see attached image "placement.png"). The device has LEDs along the curved portion of the PCB and two side-fire speakers to convey dangers to the user (see attached image "PCB.png"). There is a snap-dome push button on the right side of the PCB. Please design a fused rubber actuator for the snap-dome.

Assembly: The front case will have 3mm screw bosses. The clip slides over the boss, next the PCB, then the back case, then a screw to hold it all together (see attached image "assembly.png") .

The project will be pre-payed once there is 3 quality design entries (including CAD files).
Wants:
The final grade will be determined as follows:
40% Manufacturability: The design fits the PCB and can easily and cost-effectively be adjusted for plastic mold injection. The design is 3D printable.
30% Aesthetics: The design is slim and attractive.
10% Creativity: The design does not resemble previous entries and features creative patterns and lines.
10% Water Resistance: micro-USB, speakers, and other entry points employ water resistant designs.
10% Designer Interactions: Designer actively engages with Buyer.
Don't Wants:
- Large clunky design
- Housing doesn't match PCB
- Design aesthetic but unrealistic in terms of manufacturability.
Software:
  1. AutoCAD (Latest)

Entries

1st Winner
#30 Clipable SNS Prototype 2.2 [Final Submission] by Vivek Revi
Final touches has been made. Hole sizes and screw is of standard size. Kindly check 'Design Variants' too.
more
Apr 21, 2017 7:19
2nd Winner
#22 Hard hat system V4.0 by Peter J.
Updated design to include a plastic clip.
more
Apr 17, 2017 21:06
#4 Clipable SNS Prototype 2 by Vivek Revi
I have redesigned the whole model from the earlier submission in the previous contest. Upon request i can change any aspect of this design. Kindly feel free to say your comments and suggestions.
more
Apr 12, 2017 3:48
#8 Clipable SNS Prototype 2.1 by Vivek Revi
The changes you suggested has been made. Please let me know if you need anything changed.
more
Apr 13, 2017 16:35
#14 Clipable SNS Prototype 2.2 by Vivek Revi
Changes has been made according to your suggestion. If you'd like to incorporate anything else, Do let me know.
more
Apr 14, 2017 17:37
#2 made with exactly as the attachment by Idham
Apr 11, 2017 11:56
#7 Hard hat system by Peter J.
Fully waterproof design, utilizing easy snap fit assembly making screws obsolete. See attachments for exploded view and a file with different color ideas.
more
Apr 13, 2017 16:27
#20 Hard hat system V3.0 by Peter J.
Changed the design as per our conversation. The metal clip could also be made out of plastic.
more
Apr 16, 2017 23:38
#5 Hard hat clipable by Idham
Apr 12, 2017 15:13
#23 Hard-Hat Clipable Safety Notification System #2 by Yaya021
Apr 19, 2017 9:01
#25 Hard-Hat Clipable Safety Notification System #2 by Yaya021
I hope i have some critic to my self
more
Apr 20, 2017 13:55
#6 Hard-Hat Clipable Safety Notification System #2 by Yaya021
Apr 13, 2017 5:21
#1 Model 1.0 by V.M.Design
This a just a preview of what I am working on, just to get a feeling of how wall thickness looks like. I will upload complete design with cad/stl files as soon as possible!
more
Apr 6, 2017 2:07
#9 Hard hat clipable safety notification system 2 by Idham
Apr 14, 2017 10:02
#10 Hard hat clipable safety notification system 2 by Idham
Apr 14, 2017 11:36
#11 Hard hat clipable safety notification system 2 by Idham
easy to manufactured
more
Apr 14, 2017 15:21
#12 Hard hat system V2.0 by Peter J.
Updated and simplified the geometry of the casing. STL files are now also included.
more
Apr 14, 2017 16:33
#13 Hard-Hat Clipable Safety Notification System (#2) by Saket CAD
Concept-1
more
Apr 14, 2017 17:17
#16 finaly my design by Idham
Apr 15, 2017 3:06
#17 stl file by Idham
Apr 15, 2017 12:11
#21 safety notif clip by budiawan
Hi, buyer.....
It's just for concept, please review my design...
If you agree, I will make it manufacturable...
Thanks
more
Apr 17, 2017 16:55
#28 Hard hat clipable safety notification system 2 by Idham
:)
more
Apr 21, 2017 3:04

Discussion

Showing last 20 comments - View All

John Tom

Buyer

Sun, 23 Apr 2017 22:59:15 +0000
Thank you everyone who submitted design entries! Congratulations to the 1st place prize winner Vivek for submitting a very attractive and manufacurable housing design. He made multiple submissions and worked very hard meet my requests. Congratulations to Peter for 2nd place prize for a very aesthetic and creative design. He also redesigned multiple times to meet my suggested changes. And lastly, congratulations to Indrawan for a very creative and manufacturerable design. He has a very creative and artistic design, and probably the most aesthetic clip design.

I'll be sending a more detailed score sheet out to everyone soon!

John Tom

Buyer

Fri, 21 Apr 2017 16:26:01 +0000
Hi all,

Thank you so much for the submissions! I'll grade the entries over the weekend, attach a grade sheet, and select winners.

Adam

Designer

Thu, 20 Apr 2017 04:16:37 +0000
Great contest ! Thanks ! Once i receive your answers I'll update my design and resubmit.

Adam

Designer

Thu, 20 Apr 2017 04:15:12 +0000
Do you know what the estimated annual usage on this product is, so that I can designed around a P20 steel tool, or a hardened H13 steel tool ?

If the USB port is to be made with a mechanical slide in the tool, then you'll need a hardened steel mold. The USB port cutout can be made with an open and close mold, but I don't know what your tooling budget is.

Adam

Designer

Thu, 20 Apr 2017 04:08:32 +0000
Is it ok to design around a PC/ABS material ?
Do you need it to be at a particular UV rating for this application ?

Adam

Designer

Thu, 20 Apr 2017 04:05:03 +0000
are you going to use ejector pins in the mold, or will this part need a 3 plate tool design.
Please let me know before the contest ends so that I can submit a proper design.

Adam

Designer

Thu, 20 Apr 2017 03:58:48 +0000
oh, one other thing. is there a particular location that you would like the parts gated into ? This affects the design as well and I'm assuming that you don't want a big ugly gate scar on the housing from an operator using clippers to cut it off.

Do you want it subgated or tab gated ?

thanks.

Adam

Designer

Thu, 20 Apr 2017 03:50:52 +0000
Hi, I need some more time.
I'm working on ribs that are to be used as board supports and I'm not sure what thickness to make them without causing
ugly sink marks on the outside of the housing. I'm sure others have already considered this, but I haven't seen comments on it.

Can you provide some assistance on what the housing wall thickness should be, and what the rib thickness should be ?
I'm assuming that there is some sort of cosmetic specification that needs to be considered in the design.

Also, are you texturing these parts ? What draft angle should I use and what is the Mold Tech specification you plan on using
for texture if infact you are going to want texture.

Also, is it ok to use multiple slide mechanisms in the injection mold. These increase your mold cost 30-40% and I want to make sure my design is in line with your tooling budget.

Thanks.

V.M.Design

Designer

Mon, 17 Apr 2017 15:42:46 +0000
Some more time would be nice! Thanks!
Mon, 17 Apr 2017 08:47:41 +0000
Yes.

John Tom

Buyer

Sun, 16 Apr 2017 18:31:19 +0000
Hi Everyone,

Does anyone need more time with their designs? If two or more people do, I'll extend the project for 3 days.

John Tom

Buyer

Sun, 16 Apr 2017 18:25:25 +0000
Hi Everyone,

Here is some material to help everyone with manufactuability and making models compatible with plastic mold injection:
- https://www.stratasysdirect.com/resources/injection-molding/

John Tom

Buyer

Thu, 13 Apr 2017 16:19:41 +0000
Hi khan,

Solidworks is fine. Just be sure to submit .stl files when you're complete with you design so we can 3D print your design.
Thu, 13 Apr 2017 06:31:22 +0000
Dear Sir,
Can we use solidworks 2016?
Regards,
Munawar khan.

John Tom

Buyer

Wed, 12 Apr 2017 21:31:40 +0000
Hi MAINAK,

If anything, I'll extend the competition if everyone needs more time.
Wed, 12 Apr 2017 18:13:13 +0000
Please don't close this competition before deadline.

John Tom

Buyer

Fri, 07 Apr 2017 16:31:04 +0000
Hi Idham,

Please build the housing exactly to the PCB specifications and 3D models.

Idham

Designer

Fri, 07 Apr 2017 09:48:32 +0000
the PCB design must be same with the attachment?

John Tom

Buyer

Thu, 06 Apr 2017 00:27:47 +0000
Hi VM,

There is a 0.5 mm tall micro-controller. Please model 0.5 mm of clearance for the bottom of the PCB.

V.M.Design

Designer

Wed, 05 Apr 2017 22:59:45 +0000
Thanks, I had already modeled the PCB in 3D, but it would be nice to have your file in .dwg or .dxf file (saved as 2010 autocad version), just to compare. What troubles me more, though, is the clearance between the bottom face of the PCB and the case. I've gone with 2mm clearance, as I guess there's no electronic component of significant thickness at the bottom of the PCB ( e.g. like the thickness of the battery, on top of the PCB)

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