This type of hinge has its leaves folding into each other, like a flush hinge. These hinges are commonly used in cabinets where insert, full overlay, or partial overlay is required. A pivot hinge has its pins the pivot attached to the top and bottom side of the door against the door frame.
This hinge is different from the butt hinge where the pins are located at the sides. Pivot hinges allow a wider range of rotation which makes it suitable on doorways with high traffic on both directions.
A self-closing hinge is a type of spring-loaded hinge designed to automatically close doors by means of a spring. The spring exerts a force to close the door while a damper, either mechanical or hydraulic, causes the rotation of the door to slow down as it closes.
Spring-loaded hinges are hinges fitted with a spring to assist opening and closing of the door. One type of this hinge is the self-closing hinge which was mentioned earlier. Another is the double action spring hinge. Its movement is similar to the pivot hinge, but with springs attached. The door can swing in both directions while the springs automatically close the door in its center position. A spring release hinge, like the quick release hinge, has a pin release mechanism that allows for dismantling doors without the need for additional tools.
This hinge features a pin release mechanism held into position by a spring. A knurled knob is pushed and turned to release the hinge. This type of hinge is constructed to have a limited end play. They can be formed as a butt, continuous, strap, and weld-on hinges. Strap hinges are like butt hinges but with a shorter pin and wider leaves straps. This type of hinge is not intended to be concealed, but for aesthetics and decoration. These are commonly used on garage and shed doors.
Weld-on hinges are used in metal enclosures or gates where the hinge is needed to be fixed permanently through welding. Their construction is similar to a butt hinge. This is a type of bolt anchor used to hold doors in a fixed position, though in some cases, it can also be used as a hinge. A cane-bolt latch consists of several barrels attached to a moving part, a drop bolt or rod, and a hole fixed on the mating part. This section defines the terms mentioned such as leaves, barrels, and pins.
Aside from the component terminologies, hinge characteristics are also discussed. These characteristics define the specifications for manufacturing or purchasing a hinge. This is the plate that extends laterally from the knuckle or barrel. This is the part that is being attached to the fixed or moving body either by screwing, welding, or gluing.
The leaf attached to the moving part revolves around the pin. This is the hollow cylinder attached to the leaf where the pin is slid through. Considering the hinge as a machine element, the knuckle can also be referred to as a bearing. The paint clearance is the dimension of the gap between the outer face of the knuckles and adjacent edge of the leaf. Pitch is the distance between the end of a knuckle and the end of the adjacent knuckle on the same leaf. In this assembly, the leaves extend laterally from opposite sides of the pin.
Reverse assembled hinges cannot close with its leaves in parallel. There are certain factors to consider when purchasing a hinge.
Since the hinge has moving parts and carries loads exerted both by the moving body and the external loads, the hinge most of the time becomes the weakest point. Dynamic loads applied to the hinge will cause it to fatigue over time causing sagging on the door or gate.
Moreover, hinges can only have a maximum thickness because of manufacturing limitations or space restriction. Hinges must be specified properly with the right dimensions, material, and mechanical properties fit to the application. The load to be carried is a key factor to consider when specifying a hinge. This will determine the dimensions and the material required for the application. In obtaining the right load specification, it is important to consider not only the weight of the moving part, which is usually the part being carried, but also external and dynamic loads.
This moment may cause the door to eventually sag, especially when the door is wide and heavy. Some hinges have limited angular movement such as the geared continuous hinge. Check if the space can accommodate the door swing and if the swing will affect access through the door. There are different types of hinges to choose from depending on the application.
The required movement may also need friction or spring-loaded hinges for fixing the position of the moving part. The laptop covers, camera tripods, and ventilation screens are popular examples of devices that use friction hinges.
Hinge orientation is the direction of end play or how the hinge rotates or moves relative to the door. Hinges can be right-handed or left-handed.
Choosing between right or left-handed hinges depends on the swing and type of the door. Another factor to consider is the method of fastening the hinge to the moving and fixed parts. Hinges can be welded, bolted, or screwed on the frame which typically depend on the type of service or amount of load to be carried. Moreover, hinges can be installed with different mountings such as surface, concealed, flushed, overlayed, and so on.
Hinges used for furniture and doors usually have good aesthetics imparted on them. This may mean decorative designs of hinges as what can be seen on butterfly and strap hinges. Also, aesthetics may also require hinges to be concealed so that the furniture will have a continuous, uninterrupted look.
The type of environment, whether outdoor or indoor, will affect the material specification of the hinge. For applications requiring corrosion resistance and high strength, stainless steel is the material of choice especially in salt environments.
Plastic hinges are corrosion resistant also, but without the high strength. If stainless steel is too expensive, galvanized steel works as well. Concealed hinges are designed for strength as well as aesthetics; and remain completely hidden from the outside of cabinetry, including kitchen cabinets and bedroom and office furniture pieces.
Concealed hinges allow for ease of adjustment to compensate for any imperfections that might accompany cabinet construction. This type of hinge comes in a wide variety of styles which perfectly suit targeted applications such as self-closing cabinets, or doors that are designed to open degrees.
Double-action spring hinges are well known for their commercial applications where a door might be required to swing both ways, such as in hospitals, institutions and restaurants. Doors with double-action hinges can be opened from either direction and return to their closed positions, via, an internal spring.
Gate hinges, as the name indicates, are used with gates and can be easily mounted on round posts as well as square posts. Gate hinges come in very handy if a hung gate is not straight since the hinge can be adjusted to compensate for the imperfection. All one needs to do is lift the gate off the hinge and turn the lag-screw parts of the hinge, and then rehang the door.
Weld-on gate hinges are the most secure method for hanging a gate; and weld-on gate hinges possess the highest weight ratings of all hinges and can hang gates weighing more than 3, pounds.
These are only a few of the many different types of hinges on the market that are designed for a myriad of specific purposes. They all play a crucial role to ensure that virtually everything in our world can open and close — from computers, to doors on military vehicles, to tackle boxes, to leaves on dining room tables. Almost every item we use depends on hinges — they truly are unsung heroes. Whatever your application might be, there is a hinge that will provide the appearance and performance you desire and require.
Another type of pivot hinge allows doors to pivot open and closed both ways, much like the kitchen doors you see in restaurants. These spring-loaded hinges are larger and heavier than those made for cabinetry. Some hinges add thickness to the cabinetry. To reduce that thickness, consider the overlay hinge. This type of hinge folds back on itself, allowing the door to lay flush against the face of the cabinet. This specialty hinge allows you to swing the door away from the doorframe, widening the opening up to two inches.
Offset hinges are especially useful for areas you want to make ADA compliant. Inside, designers use smaller versions of them on cabinets to achieve a rustic feel.
The long hinge leaves or straps add extra support for heavy gates or barn doors. Hinges come in a variety of materials, including stainless steel, brass, bronze, pewter, and copper. You can also choose from different finishes like chrome, polished, or brushed to complement your design. And if your hinge is for outdoor use, choose one with a rust-resistant finish. Hinge installation may require the following tools: chisel, utility knife, hammer, screwdriver, and drill. Cookie banner We use cookies and other tracking technologies to improve your browsing experience on our site, show personalized content and targeted ads, analyze site traffic, and understand where our audiences come from.
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