Soft close, no pinch safety hingeBlind

in Industrial Design Services held by AO123
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We are a company that provides innovative product solutions for the physical education and educational market. We pride ourselves in providing the most innovative, high quality product to our customer. This product would be a soft close, safety hinge used to hold the lid open on our line of ball carts. It needs to be pressure sensitive and stay open at any angle and not slam closed. It also must not have any pinch points where the fingers could get pinched. The lid would need to be pushed closed by the user. The lid itself that needs to be supported is about 25lbs., however, the hinge would need to support more in order to keep it from closing on it's own. The end user can be a student so safety is critical. There are many soft close hinges on the market, many with pneumatic functionality and gas hinges and often used on toy boxes. I have attached a photo of an existing hinge on the market just for reference. I am open to materials based on design and likely will need to be pneumatic or incorporate a gas hinge. I have included a link to our website to see the carts it would be used on. You can also see a few of the existing hinges that have been/are being used that I am looking to update with a better hinge. I am also including files to the carts themselves so you can see the product the hinge will be used on, as well as instructions that show the current hinge being used that I am looking to update. The existing hinge is not ideal as there are potential pinch points.
Functionality of the mechanics will be the key factor in the success of the design. It needs to hold the weight of the lid at any angle and needs to be safe. The hinge must function, fit and work properly with our existing cart designs.
Don't Wants:
A design that is not going to function as intended and not able to hold the weight of the lid. In addition, I don't want a design that is too difficult or expensive to manufacture.
  1. SolidWorks
Additional Information
additional specifications:

Open Force: 4-7lbs
-Extended Length: < 20"
-Collapsed Length: < 16"
-Cylinder Diameter: < 1"
-Mounting: Ball Stud Joints


= Buyer's Rating
1st Winner
#8 Soft close, no pinch safety hinge by REDA
Nov 17, 2021 21:52
#29 Soft close SOLIDWORKS files by Hamed1
Dec 4, 2021 16:38
#26 Best hinge by Kzswara
Nov 26, 2021 14:45
#21 Soft close, no pinch safety hinge by sherifelsheikh
Nov 23, 2021 10:52
#20 Hinge folding by Vivek0006
Nov 22, 2021 22:08
#1 Soft close, no pinch safety hinge by REDA
Nov 11, 2021 22:00
#14 Titan Ball Cart - Soft close, no pinch safety hinge. #03 by moon47usaco
Nov 22, 2021 5:32
Nov 18, 2021 1:30
#7 Soft close, no pinch safety hinge by REDA
Nov 16, 2021 20:53
#6 Titan Ball Cart - Soft close, no pinch safety hinge. #02 by moon47usaco
Nov 16, 2021 17:05
#5 Titan Ball Cart - Soft close, no pinch safety hinge. by moon47usaco
Nov 15, 2021 14:19
Nov 14, 2021 15:31




Mon, 15 Nov 2021 09:06:42 +0000
Dear Ao And Teams

Can you give a feedback regarding my design which I submitted a few days ago.

Wed, 10 Nov 2021 18:55:43 +0000
Is there a way I can contact you to discuss some find details? I have several questions that need answered.



Tue, 09 Nov 2021 21:05:17 +0000
Hi James, The weight is approx 25lbs (I mentioned this in the description) and I did add some additional specs. I apologize but I am not sure on the torque. thanks!
Tue, 09 Nov 2021 20:58:39 +0000
Do you know the weight of the top panel, or better, the torque needed to lift the lid on the current hinge pins?



Tue, 09 Nov 2021 19:54:07 +0000
Hi Zech, I would be looking for the complete assembly that would work on our carts. I just attached an image as a reference of the type of functionality I would be looking for. thanks!
Tue, 09 Nov 2021 19:51:08 +0000

Are you looking for an entire "hinge" assembly with an integrated strut/ lift mechanism? Or simply a safety lift mechanism, for example the strut image that you attached. The strut image attached is not the actual "hinge" point.





Tue, 09 Nov 2021 14:55:48 +0000
Hi Parvinder,
1. We use Solidworks so it either needs to be in Solidworks or something that is compatible and could be easily converted.
2. That is difficult to say without knowing the type of hinge. $5-$10 per piece
3. I am open to materials based on design but imagine it would be a combination including metal and plastic.
I also added some specifications for a a gas hinge to the project that would be helpful.

Tue, 09 Nov 2021 01:23:39 +0000
Hello Team
Few questions I have to ask before working on it.
1. Can I use NX software to design this product.
2. What is your estimated cost of per piece during manufacturing.
3. Which material do you prefer for this product.

Parvinder Singh

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