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What are different types of self closing hinges?

Self-closing door hinges are usually designed to ensure that the door can slowly close on its own after being opened. Although these hinges are relatively inconspicuous, they can actually be found in many large facilities, such as schools, shops, and hospitals.
Stainless Steel Single Acting Self Closing Spring Hinge
Stainless Steel Single Action Spring Hinge for Door
Stainless Steel Rising Hinge for Bathroom Door
180 Degree Stainless Steel Double Aciton Spring Hinge
Self Closing Door Hinge Types

Self-closing hinges contain a small spring that pulls the door back into contact with the door frame after a gentle push on the door. Auto-closing means that when you close the door and get within 2 inches of closing it, it closes automatically due to the spring in the hinge. This way, when your hand is full, you don't have to push to close.

What is spring hinge?
Single action spring hinge:
A spring hinge has a spring in its “knuckle”, which is larger than usual. The spring is linked to one flap at the top and the other flap at the bottom. Therefore, when the door opens, the spring is wound up, as the two flaps rotate apart.
When the door is released, the spring re-asserts itself, pushing the two hinge flaps back together, and that in turn rotates the door back into the frame.
 
Facts about single action spring hinges:
* Spring hinges will usually open to 180° as long as the frame detail doesn’t obstruct this.
* There are different sizes for different door widths, thicknesses and weights. All three factors can influence the final choice. Some are designed specially for domestic doors.
* To increase or decrease the speed of door closing, a capstan at the head of the barrel is rotated with a Tommy bar or Allen key supplied. After cranking the capstan round, a peg or grub screw is inserted to stop the spring unwinding again.
*They are available in a variety of metal and paint finishes.
Note that the hinge flap with two knuckles is fixed to the frame
 
Double action spring hinge:
You can see that this hinge has two knuckles, and therefore two springs - one for each direction of closing. If the hinge is opened out in plan view, it forms a “Z” shape, The springs are housed at the corners of the “Z”.
 
Facts about double action spring hinges:
*Double action spring hinges will usually open to 180° in each direction.
*There are different sizes for different door widths, thicknesses and weights. All three factors can influence the final choice.
* To increase or decrease the speed of door closing, a capstan at the head of the barrel is rotated with a Tommy bar or Allen key supplied. After cranking the capstan round, a peg or grub screw is inserted to stop the spring unwinding again. Each barrel controls one direction of closing. In below picture, the right hand barrel controls the clockwise closing sweep.
*A hanging strip is needed on the frame to fix to. The barrels get in the way if you try to fix the hinge flap directly to the frame.
*They are available in a variety of metal and paint finishes.
 
 
 
Different Types of Door Hinge
D&D Door Hinges include flag hinge, security hinge, lift-off hinge, spring hinge, crank hinge, heavy duty hinge, washer hinge etc.As a professional Door Hinge Manufacturer in China, we provide various door door hinge, our door hinge are anti-rust , fire rated, high quality and durable, they can meet your local requirements.
BHMA ANSI UL Listed CE EN Fire Rated Door Hinge
Stainless Steel Different Types of Door Higes
SS304,316,201 Heavy Duty Butt Hinge for Metal Wood Door
Modern Square Round Corner Door Hinge

Self Closing Door Hinge Project

D&D self closing door hinge suitable for Residential Building, Office Building,Education, Healthcare, Hotel, Government applications.We can supply international branded quality at factory cost with mechanical guarantee and after sales service.
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Education  
Office Building
Healthcare
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Hotel

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D & D Hardware has established long business relations with customers from America, Europe, Middle East and Asia, Selling our items are proved to be profitable,collection approve by consultants,international branded quality with certifications from Intertek/UL.

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  NO.4 Bidg,Street 33,West Gaoxin Rd,High-tech Zone,Jianghai Dist.Jiangmen City,Guangdong,China
   +86 139 2903 7292
   +86 139 2903 7292
  +86 139 2903 7292
 David Jian(Managing Director)
 Ms Judy(Financial / Account Dept. )

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