\”Craftsmanship\” Invisible door encyclopedia and craftsmanship

As the \”beautiful person\” in the sect

Invisible doors are not only beautiful

makes the space look more open

Cleverly blends the door and the wall All in one

Reduce the fragmented visual sense

Make the space more concise and transparent

Analysis from the following perspectives:

• What is invisibilityDoor
• Under what circumstances is it necessary to design an invisible door
• What should we pay attention to when designing invisible doors?
• Advantages of invisible doors
• Types of invisible doors
• Invisible door process structure

1. What is an invisible door

Invisible door is a very popular innovative design element nowadays. The core is to eliminate the presence of the door and make it visually integrated with the surrounding wall. This design concept is To break away from traditional door frames and bring a more fluid and integrated feel to the interior space

Invisible doors achieve the \”invisible\” effect through a series of design and construction techniques.Usually, the invisible door will choose the same material, color and texture as the wall to eliminate the obvious

In addition, the structure of the door will also be specially designed, such as using hidden The guide rail, door handle-less design and flush installation with the wall make it a perfect visual combination with the wall.

2. Under what circumstances is it necessary to design an invisible door

2.1 What are the usualInvisible doors will be used in certain situations

• The styling wall is too short or asymmetrical. Common TV backgrounds are too short.
• House type defects , Feng Shui taboos, etc. Common toilets are opposite kitchens, toilets are opposite bedrooms, etc.
• Make a secret room , I want to have a room that is unknown to others.
• For The space is cleaner and overall, hiding the operation room and the normally messy kitchen.

2.2 Why install invisible doors?

① Better visual effect, It can maintain the integrity of an entire background wall, making the space comfortable and larger. For smaller background walls, invisible doors can be used to widen the effect to create an integrated visual effect.

② Improve Space privacy, for areas where privacy needs to be protected, where partitions cannot be chosen and the layout cannot be changed, the door can be completely invisible in the wall to provide better privacy. Hard-to-find hidden spaces for creating specific spaces.

③ Improve house type defectsFor the shortcomings of the apartment itself, if you don’t want to add partitions or modify the walls, let alone change the layout, you can design an invisible door to improve it, for example. The layout of the bathroom facing the entrance can be reduced by invisible doors, which perfectly solves the embarrassing problem. The cabinet door is designed as an invisible door, which can also hide the clutter of the space.

3. What should we pay attention to when designing invisible doors?

3.1 Style design is the most important

When the common invisible door does not reach the top, whether the wall details are taken into account, such as whether the other side has a symmetrical design that does not reach the top. The diagram is as follows. I think this picture can still be easily seen. Say \”Hey, I have an invisible door here\”!

△Invisible door design should consider symmetry

△The invisible door considers the overall design to be more beautiful

Secondly, if you want to achieve the effect of being fake and real, the baseboard position on the door should also be designed. For example, invisible doors with surface wall paint or wall cloth veneer will usually be separately Making baseboards, except wood veneer

3.2 It is important to choose good hardware products

Poor hardware of the invisible door may cause the door to not close tightly, which seriously affects the original intention of designing the invisible door. The effect to be achieved is: it can be pushed open normally, and it can be pushed and pulled. Automatic closing. The main one is the hinge. src=\”https://p3-sign.toutiaoimg.com/tos-cn-i-6w9my0ksvp/299792fa1815409d83da213866d1a167~tplv-tt-origin-web:gif.jpeg? _iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1735786117&x-signature=6qK02KOiolpyVfzwn%2FrTUOU1lhU%3D\”/>

The hinges available for invisible doors on the market are roughly divided into the following types:

3.2.1 Dark hinge:Select the size of the concealed hinge according to the different thickness of the door. The advantage is that it can hide the front and back of the door. The door panel and door frame need to be slotted, but ordinary concealed hinges If the hydraulic buffer effect is not achieved, a door closer needs to be installed behind the door. It is suitable for general invisible doors, wooden doors, and swing doors.

△Concealed hinge with door closer

3.2.2 Hydraulic positioning hinge:Hydraulic positioning hinge integrates multiple functions into one, because it can automatically close the door, but no longer requires a door closer, and the price will be more expensive.

△Hydraulic positioning hinge

3.2.3 Heaven and Earth Axis Hinge: Suitable for various door categories and partitions, and can achieve 360° rotation Realize opening and closing settings through the sky and earth axis + steel frame base, useHeaven and earth axis that needs to be weldedOpen and close the door leaf

• Advantages: large load bearing, low material cost, stable performance
• Disadvantages: It is troublesome to install, the opening range is small, and it is inconvenient to open.

Generally this way Measures mainly used when the heavy-duty facing material is invisible door, which means that the heaven and earth axis will be considered only when hinges cannot be used.

△Heaven and Earth Axis Hinge Installation Instructions

3.2.4 Chicken hinge:Suitable for general cabinet doors, various wooden door leaves, etc.

3.2.5 Door lock:Because to achieve the effect of external hiding, generally useSingle-sided hidden door lock, as shown below.

4. Advantages of invisible doors

The advantages and functions of invisible doors

• Enhance the sense of space:By using invisible doors, a large open space can be divided into smaller functional areas while maintaining the continuity and transparency of the space.
• Beautiful:The design of the invisible door can make the wall look neater and more uniform, improving the overall aesthetics.
• Privacy:For areas that need to protect privacy, such as bedrooms, study rooms, etc., invisible doors can provide better privacy
• Save space

5. Types of invisible doors

From the perspective of opening method, invisible doors can be divided into flat opening type, push-pull type, Four types: folding type and rotating type.

5.1 Swing invisible door(most commonly used)

The most common one, it generally installs hinges on the front of the door and opens them inward or outward. It can be suitable for various functional spaces such as bedrooms, study rooms, storage rooms, etc. The door and wall can be designed to be of the same type. Patterns, wallpapers, and wall paints can be used to achieve a perfect hiding effect; in addition, they can also be made into storage racks, bookshelves, etc.

• Advantages：It has advantages in security and privacy, no noise, and is generally more suitable for use in the study room.
• Disadvantages：The flat design requires a relatively large area and does not save space.

5.2 Sliding invisible door

Usually hidden guide rails are set on both sides of the door so that the door can be pushed and pulled smoothly. It is convenient for the space division and utilization of the living room and retains as much as possible The openness of the space is more suitable for small spaces. It is a loyal friend of small apartments.

• Advantages：Good appearance and space saving.
• Disadvantages：The privacy is poor, and the sound insulation effect is not very good; and the track needs to be cleaned regularly and is easy to wear and tear.

5.3 Folding invisible door

It can be folded up when not in use, hidden on the side of the wall, and opened when in use. This kind of door is suitable for doors that need to be opened and closed frequently. The cost is relatively high, the focus is on the hardware.

• Advantages：After opening, it only takes up one side of the space. Relatively speaking, it does not take up a lot of space. It combines the good sealing performance of the swing door and the savings of the sliding door. Advantages of space
• Disadvantages：Tracks tend to harbor dirt and evil, and the cost is relatively high.

5.4 Revolving invisible door

The design of the revolving invisible door is similar to a carousel. The \”invisible\” effect is achieved by opening or closing the revolving door. But it takes up a certain amount of space. , and most of them are in the form of cabinets, which require high load-bearing capacity of hardware.

Revolving invisible door mainly refers to the central axis revolving door, which is what we often see in large shopping malls or luxury hotels. The revolving door is only suitable for large apartments. After all, it takes up a lot of space to rotate.

• Advantages：It is very beautiful in appearance and full of design. It can also be designed as a decorative door to make the entire The room is more fashionable and modern, taking into account the dual functions of door and partition, making the space more integrated.
• Disadvantages：It covers a relatively large area, requires a certain amount of space, and is not very safe.

5.5 Invisible door hidden in the ground, only some families will have this situation.

6. Invisible door process construction

Need to consider materials, In addition, attention to detail and meticulous construction are also key to ensuring the effectiveness of invisible doors. data-track=\”592\”>6.1 How to make a swing-open invisible door

The key points for making invisible doors are:Hardware, door frames, doors and surrounding materials can achieve various effects through the combination of these three types. But no matter which kind of invisible door it is, their structure is roughly as follows. ：

△Invisible door structure diagram

In the picture aboveA represents the wall material, B represents the appearance material of the door, according to the above structure diagram, we will introduce the common swing-open invisible doors in two directions.

6.1.1 AB materials are different, is not a true invisible door. It is often used as a frameless door, an extremely narrow frame door, The application of doors with hidden frames is relatively complicated. The door frame needs to be pre-embedded and installed in advance, and the door needs to be connected multiple times, which requires very high construction technology.

①Invisible door with exposed edges, a small part of the door frame is exposed, with extremely beautiful lines. The renderings and node diagrams are as follows.

△Loleng hidden edge embedded hardware structure diagram

②Hidden edge invisible door, the border is completely hidden, the rendering and node diagram are as follows.

△Leng hidden edge hardware node diagram△

△Leng hidden edge hardware node diagram△

6.1.2 AB material is the same, this type of invisible door is commonly used and can better hide the door opening. And improve the beauty of the wall, it has different effects according to the different wall materials. There are often the following types①②③④⑤：

①The surface is wall paint, the surface of the door is usually sealed with gypsum board, and the wall paint is painted together with the wall, because the door It needs to be touched frequently, so it is recommended to buy wear-resistant and stain-resistant wall paint. Because it needs to be constructed together with the wall, the door needs to be completed before the painter comes in, and then handed over to the painter to uniformly scrape putty and paint. It cannot be like other finished doors, where everything is done and finally installed, which requires a lot of work. time docking.

②The surface is wallpaper and wall covering, the construction is similar to that of wall paint, but because the door is often opened and closed, the door body wallpaper is easy to curl and warp, and is not durable. It is recommended to paint all sides of the secret door door leaf 5mm thick stainless steel closing should be installed and protruding 3mm from the finish

③The surface is slate or stone, not durable. This method is not a long-term solution and will not last long. It is recommended to use all sides of the secret door leaf5mm thick stainless steel closing should be installed and protruding 3mm from the finish

④The surface is hard-packed, when making a hard package shape, the main considerations are aesthetics and symmetry, leaving seams and closing edges. If properly designed, it can be completely integrated with the wall and is not durable. It is recommended that all sides of the secret door door leaf and surrounding areas be placed5mm thick stainless steel closing should be installed and protruding 3mm from the finish.

⑤The surface is wood veneer, wood veneer is the most used in invisible doors, because the diversity of the material itself can create a variety of high-end A home environment with unified appearance and style.

6.2 Invisible door construction technology

6.2. 1 Wall treatment: Carpenters need to use European pine boards to make the base layer for invisible doors to ensure the verticality and flatness of the wall. It is best to use infrared rays to level the wall in advance. In order to achieve For better results, it is recommended to carry out rib punching and leveling. Invisible doors have higher requirements for wall flatness, so this step is crucial.

6.2.2 Door installation:Reserve about 10 centimeters of space on the wall for the built-in door. Use glass magnesium board or gypsum board to cover the gap and fill it with foam glue. Use a level to ensure that the door and the wall are at the same level, then embed the glass magnesium board or gypsum board into the door frame through structural glue, then fix the door body and complete the installation with a door handle of the same color.

If you choose an ultra-narrow frame invisible door, you need to embed the stainless steel door pocket first, and then remove the dust on site to prevent cracking. Do the base project and make the invisible door based on a certain material, such as paint board, mercury board or stainless steel.

6.2.3 Install door leaf:First assemble the door cover, and then install the door leaf. First use screws to fix the hinge on the door leaf, and then fix the other side of the hinge to the door cover hinge pad. Above. Generally, 2-3 hinges are required for indoor doors.

6.2.4 Choose appropriate hardware:Select the corresponding hardware according to the opening method of the invisible door. If the invisible door does not have a handle, you need to use a self-closing page to allow the door to close automatically.

6.2.5 Installing wainscoting ：Put foaming agent behind the wainscot, then paste the wainscot on the wall around the invisible door and fix it with clips. The color and material should be consistent with the invisible door, and the surface of the wainscot should be flush with the surface of the invisible door.

6.2.6 Install decorative moldings:Use glass glue to paste the decorative lines on the invisible door and wainscot. The decorative lines of the invisible door must be Corresponds to the decorative lines on the wainscot, etc.

6.2. 7 Paint stage: Use caulking gypsum to fill the seams, and apply anti-rust paint to the nail holes. Apply mesh cloth and external corner strips to prevent cracking. Paint, sand, and apply latex paint (one base and two sides). After the construction is completed, be sure to do a good job of protection.

6.2.8 Process Notes:

Reserve in advance embedded fasteners and installation locations at the root of the partition wall. After the door frame is installed on the wall, plywood or thick paper should be used as temporary protection measures to prevent The product is damaged; remove the protective film before installing the doors and windows

Determine the installation position of the hinge, and mark it on the door and door frame. Use a slotting machine to make grooves on the wooden door. The depth of the groove should be the same as the thickness of the hinge. . Will use screws to One side of the hinge is fixed on the door leaf. Generally, indoor doors require 2-3 hinges. After the hinge is fixed, move the door to the door frame and fix the other side of the hinge to the door frame with screws. p>

• Waterproof treatment:If the invisible door is used in the bathroom, the six sides of the door need to be waterproofed to prevent the door from deforming due to thermal expansion and contraction.
• Detail processing:In order to achieve a fake and real effect, the position of the baseboard should also be taken into consideration in the design, especially invisible doors with surface wall paint or wall cloth veneer, which usually need to be customized separately. Baseboards.
• Hardware selection and processing:Choose good quality invisible door hinges, such as hydraulic positioning hinges, which can automatically close the door without installing an additional door closer. Although concealed hinges can hide the effect, ordinary models cannot provide hydraulic buffering functions and may require the installation of additional door closers.

The construction process of invisible doors is complex and demanding. From the carpentry to the painting stage, every step requires careful operation. At the same time, details such as waterproofing and hardware selection cannot be ignored. Only by doing this can we ensure the perfect presentation and long-term use of the invisible door.

6.3 Learn from one example and look at the construction methods of other secret doors

6.3. 1 Secret door with exposed edge and invisible door frame

Finished component

How to make invisible door frame nodes with exposed edges

6.3.2 Hidden edge invisible door frame node

Hidden edge invisible door frame node

Construction steps ：

• The manufacturer will produce and test-assemble the products before shipping. The three-sided door frames and imported hinges should be determined before purchasing. The model, environment, and methods areExposed edge, hidden edge, solid wall, wall between keels, be prepared or reserved in advance to meet the installation conditions, such asPre-embedded fixings, installation positions on the base of the partition wall, etc.
• Required after the door frame is installed on the wallUse plywood or thick paper as temporary protection measures to prevent product damage ;
• Tear off the protective film after the doors and windows are installed and one day before acceptance.
• Invisible doors have much higher requirements for craftsmanship and components than other door systems. Improper construction or improper materials may ultimately affect the presentation of the effect, so here are the same After design consultation, it is more efficient to use finished invisible doors.
• Of course, The above approach can also be achieved with traditional technology, but the process requirements and component requirements are relatively high.

6.4 Stone, wood, wallpaper decorationHow to make noodles

6.4.1 Stone secret door node

We can see from the above picture: the angle at which the door opens is determined by the centering of the axis,The more centered the axis is, the greater the opening angle of the door will be.

▲ Fire hydrant stone secret door node details

▲Transverse section node of tube well stone secret door

▲Tube well stone secret door vertical section node

Construction notes:

• 1 The height of the stone secret door is determined according to the design plan and ensures that the fire door and fire hydrant door can be opened freely;After opening the stone secret door, ensure that the tube well fire door is opened at 90°;Fire hydrant stone secret door guarantees 160° opening
• 2 If the tube well fire door is a double-door, the stone secret door should also be Double-open stone secret door, please refer to the single door method. When building the wall, the width of the reserved opening must be > the width of the fire box + 300mm, and the depth of the opening must be > fire protection Box thickness +120mm; thickness of dry-hanging stone decorative surface needs to be determined on site, And it must be ensured that the net depth from the finished stone surface to the fire hydrant is greater than 275mm.
• 3 Add at least one diagonal brace in the middle of the transverse keel of the steel frame of the secret door. The dimensions of the steel keel marked in the picture are the minimum size and cannot be smaller than the size in the picture.
• 4 The seams of the stone secret door should match the seams of the surrounding stone, and ensure that the door seams and the stone layout are clear.
• 5 After the door leaf is installed, it must be completely closed, flat, and cannot tilt outward.

Fire hydrant. Stone secret door national standard atlas practice (13J502-1)

Note:

1 The fire hydrant steel door shaft is made of Q235 steel.

2 The fire hydrant steel door shaft should be accurately positioned according to the design dimensions of the drawing when installed on site.

3 In order to avoid the need to open the fire hydrant door left and right, both sides of the fire hydrant box doorThe sides of the vertical keel can also deviate from the vertical seam line of the stone veneer by 20mm.

4 A push-button or door-knocker pull ring should be installed on the front of the fire hydrant door, and eye-catching signs should be attached.

5 When installing the fire hydrant steel door shaft, a small amount of engine oil can be applied inside.

A set of construction methods and node drawings using finished hardware hinges to realize 180° opening of stone secret doors

Depending on the load-bearing weight, the unit price of the hinge is also different. One with a load-bearing capacity of 200KG is basically 200 yuan.

Security strong bar requirements:

• 1 The requirements in each picture must comply with the following safety requirements;
• 2 Comply with (GA 533 -2012) specification requirements;
• 3 All parts of the material should comply with (GB8624-2012) (GB50222-2017) specifications, in compliance with Local fire protection requirements;
• 4 Dry-hanging stone must be equipped with vertical main keels and be reliably connected to walls and slabs (the floor slabs have insufficient bearing capacity Structural reinforcement is required);
• 5 The angle steel and channel steel used in the structure must be hot-dip galvanized;
• 6 The selection of stone must comply with the \”Technical Regulations for Natural Stone Decoration Engineering\” JCG/T 60001- Required in 2007;
• 7 The steel keel sizes marked in the picture are the minimum sizes;
• 8 stone for six-sided protection;
• 9 See the construction drawings for stone surface treatment.

6.4.2 Wooden secret door node

▲Details of fire hydrant wooden secret door nodes

▲Fire hydrant wooden secret door node details

▲ Cross-section and enlarged view of the tube well wooden trapdoor node

Construction points to note:

• 1 The height of the secret door is determined according to the design plan and ensures that the fire door and fire hydrant door can be opened freely;The width of the secret door must ensure that the tube well fire door can be opened at 90°;The width of the secret door must be at least 150mm larger than the width of the fire box, and ensure that the secret door can be opened 160° For principles.
• 2 If the tube well fire door is a double-open door, the wooden secret door should also be a double-open secret door. The gap between the two doors is preset \”Touch and tongue\”.
• 3 Dark A 20×40 steel square tube is embedded in the door leaf and welded into a \”mouth\” shape,Weld at least one diagonal brace in the middle to increase the anti-deformation strength; The wood veneer on the front of the door leaf is the same as the surrounding wood veneer. The back is sprayed with varnish and has the same color as the front, no veneer is required.
• 4 Dark Door leafA magnetic bump is installed on the upper part and a lock is installed on the lower part, there is no need to install a handle, and a solid wood frame of sufficient width must be reserved for the lock installation location.
• 5 In order to ensure that the chicken nozzle winch is installed firmly, the steel frame shown in the picture should be pre-embedded around the secret door, and ensureThe chicken nozzle is fixed on the steel frame.
• 6 The secret door that needs to be split according to the design mustDeepen the reasonable seams to ensure the overall beautiful effect.

6.4.3 Wall covering/wallpaper/paint secret door node

▲Fire hydrant wall covering/wallpaper/paint secret door node details

▲Tube well wall covering/wallpaper/paint secret door cross-section nodes and enlarged view

Construction points to note:

• 1 The height of the wall covering/wallpaper/paint secret door is determined according to the design plan and ensures that the fire door and fire hydrant door can be opened freely; the width of the secret door must ensure that the tube well fire door can be opened at 90°; The width of the secret door must be at least 150mm larger than the width of the fire box, and the principle is to ensure that the secret door can be opened 160°.
• 2 A 20×40 steel square pipe is embedded in the secret door leaf and welded into the word \”mouth\” type, at least one diagonal brace is welded in the middle to increase the anti-deformation strength;The front surface finish of the door leaf is the same as the surrounding surface finish, and the reverse side is sprayed with varnish, and the color is the same as the finish.
• 3 The secret doors are all around the door leaf and the surrounding area5mm thick stainless steel closing should be installed and protruding 3mm from the finish
• 4 If the tube well fire door is a double-door door, the secret door should also be a double-door secret door, with a \”tongue and groove\” preset between the two doors and a 5mm thick stainless steel edge.
• 5 The upper part of the secret door leaf is equipped with a magnetic touch and the lower part is installed with a lock. There is no need to install a handle. Sufficient width of solid wood frame must be reserved for the lock installation area.
• 6 In order to ensure that the chicken nozzle winch is installed firmly, the steel frame shown in the picture should be pre-embedded around the secret door, and the chicken nozzle winch should be fixed on the steel frame.
• 7 According to the design, the tube well door secret door must be separated reasonably to ensure the overall beautiful effect.

6.5 Other secret door practices

6.5.1 Cylindrical curved fire hydrant secret door

6.5.2 Polygonal wall access hatch

The wall secret door in the picture may use double shafts to achieve 2-section folding embedded closure. You may wish to think about its composition, and What are the difficulties in construction?

6.6 Common quality problems of secret doors

6.6.1 The secret door switch is not smooth/or there are gaps:

It may be because the quality of the rotating shaft or hinge is not too hard, and the friction is large during the rotation process. It is recommended to make a push-pull door stopper inside the secret door to ensure that it is concealed. The tightness of the door when closed

6.2.2 The material around the secret door has a warping problem:

It is recommended to use other materials to close the secret doors that are commonly covered with materials such as wallpaper and fabric to avoid the problem of warping.

6.2.3 When the secret door leaf is opened, the steel frame on the back side is visible:

Although the exterior finish of the secret door meets the effect requirements, for projects with high quality requirements it is recommended to cover the interior with panels.

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