×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Fixing - assembling method

Fixing - assembling method

Fixing - assembling method

(OP)
Hi there

I got a simple case to solove. Nothing sophisticated. I have to  prepare housings for USB stick which should contain DVB-T receiver(digital video broadcasting - telestar). Apart of all another questions like right material(I assume it should be PC+ABS)my major question is the type of fixing/assembling.

I had two ideas in mind, and among of those two, one seems to be for me most reliable. The first one need side actions I suppose and additional parts for mold

The second one is easier and needs glue to fix both parts - up and bottom - together.



Please tell if there exist another solutions - the low cost of a tool is a majot demand(as always)

RE: Fixing - assembling method

Pick up a snap fit design book.
I've got one called "The First Snap-Fit Handbook" (by Paul R. Bonenberger) Its pretty basic but includes a lot of samples/calculations,troubleshooting,etc..

There are hundreds of designs that can accomplish your fit without side actions or glue..
I'm assuming your goal is to make the 2 halves without side action molds or glue processes, correct?

I find that even a couple minutes searching around the office looking at other plastic parts will usually give me an idea..

Its hard to give you an idea off your basic needs without knowing a lot more about the final product. Like will there be any fasteners used anywhere else like to hold a circuit board.. If so can that fastener be used to secure the 2 halves together sandwiching the circuit board in the middle.

Can you have protrusions on the side or does it need to be smooth. By moving the locking features to the side you can easily accomplish a snap fit without side actions.

 

RE: Fixing - assembling method

I was thinking a full perimeter snap fit on the inside. ISZ

RE: Fixing - assembling method

(OP)
well, first thx for all replies

Mcgyvr, can You put some more light on following sentence:

"
Can you have protrusions on the side or does it need to be smooth. By moving the locking features to the side you can easily accomplish a snap fit without side actions" ?
I do not quite understand what You mean by that?

Today I disassembled one USB stick(almost the same You can see on attached pic). It seems, its housings were joined by gluing or welding. There are no snaps, hatches or things like that. My device is almost same long. Overall dimensions are quite similar

Any proposals
 

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources