Door structure

Door frame: a door frame embedded in the wall to support and fix the door leaf.

Door leaf; The main body of the door, the part that can be opened and closed freely.

Door shaft: the shaft around which the door rotates when it is opened and closed, and now it is mostly a metal hinge or hinge.

Liangzi: The window on the door leaf is used for lighting and ventilation.

Window: a window on a door leaf, used to transmit light or see each other.

Shutter: under the door leaf, used for indoor ventilation.

Accessories:

Handle: the manual opening and closing device of the door.

Door lock: lock the door to prevent theft, sometimes integrated with the handle.

Doorbell: a bell installed on a door, which can be opened when people hear it indoors.

Threshold: a crossbar, stone or metal strip at the lower end of a door frame.

House number: the number of the house nailed to the door.

Cat's eye: a small lens installed on the door, used for observing foreigners in the indoor observation room.

Door closer: a device that automatically closes the door after opening it.

Door clamp: a device that keeps the door in place after opening it.

Knocker: A usually decorative fixing device, usually consisting of a metal plate and a metal ring suspended from it by hinges.

Extended data:

Wooden doors are generally composed of vertical plates, tappets and core plates. According to the position of up, down, left and right, there are also more detailed distinctions. Take stirring as an example, it is divided into upward, middle, locking and downward.

Generally speaking, the structure of solid wood composite door refers to the structure of the door.

(1) is classified by opening mode.

Wooden doors can be divided into four types according to their opening modes: horizontal door (also called sliding door) (P), sliding door (T), folding door (Z) and spring door (H). Wherein, when the fixed part is combined with a sliding door or a sliding door, it is a sliding door or a sliding door.

(2) Classification by internal structure. According to the different structures of wooden doors, wooden doors can be divided into all solid wood doors, solid wood composite doors and plywood molded hollow doors.

A) solid doors:

Wooden door with completely unified internal and external materials. Refers to all kinds of wooden doors with this feature, including semi-glass doors and solid wood glass doors. Wood drying is the key process of making solid wood doors.

B) solid wood composite door

Refers to all kinds of solid wooden doors made of wood, man-made board, meager veneer and other materials, and generally refers to all wooden doors with this material characteristic. With the increasing shortage of forest resources and the increasingly prominent contradiction between supply and demand of precious tree species, it is an effective means of comprehensive utilization of wood. The application of veneer technology is the most prominent feature of composite doors.

C) mold door

A hollow door (with unsupported area above 10cm× 10cm) with glued wood and wood as skeleton materials and artificial board or PVC board as surface layer is called plywood molded hollow door.

(3) Classification by external perception. According to the appearance, we generally divide wooden doors into plane doors and panel doors.

(4) Classification by surface coating.

A) Paint door: that is, the door whose surface is painted by paint spraying process.

B) Paint-free doors: doors that do not need painting. Surface materials are generally PVC, Boeing film (strong wood texture) and melamine (melamine decorative paper).

C) Paint-painted door: Paint-painted door is actually a surface technology, and its foundation is density board. Paint doors are divided into piano paint and metallic paint.

One of the functions:

Aluminum doors and windows are divided into enclosure components or partition components according to different positions, and have different design requirements to have the functions of heat preservation, heat insulation, sound insulation, waterproof and fire prevention. And the new requirement is energy saving. The heat loss from the gap between doors and windows in cold areas accounts for about 25% of the total heating heat consumption. The air tightness requirement of aluminum doors and windows is an important content in energy-saving design. Doors and windows are an important part of building envelope system.

The second role:

Doors and windows are also an important part of architectural modeling (the contrast between reality and reality and rhythmic artistic effects play an important role), so their shape, size, proportion, arrangement, color and modeling have a great influence on the overall modeling of buildings.

The third role:

Many modern people install double-glazed doors and windows, which can not only enhance the thermal insulation effect, but also play a very important role in sound insulation. The city is prosperous, the population is dense, the traffic is developed, and the sound insulation effect is more and more favored by people.

Wooden doors are usually divided into superior products, first-class products and second-class products. Some unscrupulous merchants put wooden doors in packaging and re-affixed forged grade seals to make them inferior. So don't trust the seller's introduction and packaging, learn more about the common sense of wooden door purchase and choose carefully. You need to ask about the grade division of commodity brand manufacturers, and indicate the quality grade of the products you buy in the sales contract.

Some merchants use consumers' pursuit of brands to make some wooden doors that imitate brand style, but the price is very low. Some consumers buy this imitation because they are greedy for cheap, but they can't get the guarantee of brand service and quality. We must adjust our shopping mentality and don't blindly pursue brands. It is best to buy brand products in brand stores, and be wary of low-priced products that are known as "good quality and low price".

In some wooden door shops, not all goods are priced. Bad merchants often only mark a commodity with a lower price, and when consumers inquire about other commodities, they will take the opportunity to drive up the price. Consumers should understand that discounts are just the usual means for businesses to attract consumers' attention. For consumers, it is best to buy products in regular stores, and never sacrifice after-sales service for the sake of cheapness.

Some merchants sell wooden doors with other small brands or miscellaneous brands, but the price is the same as or even higher than the brand. The color of the brand is classic and lasting, while the color of the mottled wooden door is easy to go out of date. Therefore, when consumers buy wooden doors, they must first understand the brand, the size and production process of local brands, and the price varies because of different processes. Don't buy ordinary technology goods at high prices, but be clear about whether the brand you choose is your own.

References:

Baidu encyclopedia-gate