Concealed hinge design

I need a design for a hinge that is concealed so when the two parts are closed there are no protruding parts visible.

I need this done in a hurry no later than 13 March 2013.

Basic rundown:

The box consists of two main components. Must fold up and unfold as shown in image sequence attached. See Concealed [url removed, login to view] .

The final size is approximately 90mm x 45mm x 45mm so components need to be suitably sized to be robust.

When unfolded the whole assembly must sit flat on a surface and the top surfaces must be planar.

There are two hinges either side which are essentially identical mirror images and are required to have the same critical feature of being flush with the outside walls of the box when it is folded closed. That means when looking at the box from the top or sides you will not see any protrusions.

When the box is open flat, hinge features on the top surface may protrude if necessary,

Hinges cannot protrude when the box is folded. i.e the walls must be flush. Some recesses and hollow sections are ok, but not if they significantly affect the visual appearance.

The rectangular gap or cavity that is created when the box is folded cannot be obstructed by hinge components

Hinges can be made of multiple components

Preferable if the mirrored parts can be identical so only one part need to be tooled.


I do not need a finished detailed design. Hand sketches or rough CAD models demonstrating how the hinge would work is sufficient, as long as critical features are clear enough for me to build them in CAD on the final model. The final model is much more complex, this is just one feature of it, so the hinge design needs to be scalable to suit other configurations.

If you prefer to CAD the design up that is fine as long as it can be exported in a common format (IGS STL etc....)

Please feel free to ask any questions prior to bidding. But please note that I will not respond to time wasters or people who cannot show proven experience of similar projects.

Skills: Engineering, Industrial Design, Industrial Engineering, Mechanical Engineering, Structural Engineering

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About the Employer:
( 18 reviews ) Currimundi, Australia

Project ID: #4311983

15 freelancers are bidding on average €103 for this job


Hello DeepOrange, I am extreamly happy to provide solution for your requirement, I am a mechanical engineer with 8 year experience in Engineering Design, and solutions, I am capable of providing solution, but I w More

€100 EUR in 2 days
(25 Reviews)

Kindly check pm sir. [url removed, login to view] - Industrial Designer

€170 EUR in 15 days
(5 Reviews)

Please check my private message.

€200 EUR in 1 day
(4 Reviews)

Hi, I am a mechanical engineer with extensive design experience. Please check your message for more details. Regards Anuj Garg

€180 EUR in 3 days
(5 Reviews)

Looks helpful if you can accept a detailed sketch and not insist on an Autocad drawing. See private message for more.

€150 EUR in 3 days
(6 Reviews)

Dear sir i understand your project and i a really interest to do it and i am ready to start working in it now please check PM for more details

€60 EUR in 2 days
(9 Reviews)

Dear Sir I am professional designer with over 15 years of experience. Willing to do this project for you. Best regards. Victor

€30 EUR in 1 day
(6 Reviews)

Deep Orange, This is a relatively easy task; please see private message for details. Regards, TDA91

€30 EUR in 1 day
(4 Reviews)

Plz have a fair proposal in your inbox. My reputation n feedback is my reference. Cost effective n smart solution is guaranteed.

€79 EUR in 4 days
(9 Reviews)

It would be a pleasure to work in your project. Please see PM.

€135 EUR in 7 days
(4 Reviews)

Dear Sir, This is Ahmed Hamdy an Industrial and CAD Engineer for more than 8 years, I can do this project in a very very short time with a high quality and lower price.

€40 EUR in 0 days
(3 Reviews)

This sounds like a pretty simple model.

€50 EUR in 5 days
(0 Reviews)

Good Day! I trust you are well. I am a professional mechanical engineer specialized in product development. I have work with many inventors before, for further information on my portfolio; kindly have a look at my More

€220 EUR in 2 days
(0 Reviews)

Hi, I am a experienced draftsman within a civil construction industry in Australia and I am looking forward to work for you. I will be using Autodesk Inventor and AutoCAD. Feel free to contact me and let me know y More

€100 EUR in 1 day
(0 Reviews)

I already have two designs that do exactly this, I have sent you a private message with more details.

€100 EUR in 1 day
(0 Reviews)

This appear to be simple. I Could develop the entire model if you need.

€100 EUR in 2 days
(0 Reviews)