Auditorium chairs are mostly composed of four parts: chair seat, chair back, armrest and standing feet. Generally, the feet and handrails are integrated to form a firmly installed handrail frame. The composition structure is generally steel wood structure or steel plastic structure.

Stand on one's feet

It can be divided into single foot landing (single foot landing) and handrail foot landing (the station foot is directly connected with the handrail frame).

The seat with one foot landing and the center point of the seat supported by the standing foot are not only beautiful, but also convenient to connect the chair foot with other facilities of the environment, such as air vent, power interface, etc. Because the connection mode of one leg is relatively complex, the cost of one leg mechanism is increased accordingly.

The way of landing the handrail foot is firm and reliable, which is convenient for fixation and installation. The handrail frame is combined with the foot, and the structure is simple.

The standing feet are the foundation of the auditorium chair support. Generally, they are directly fixed on the ground with anchor bolts.

Handrail

The armrest of the auditorium chair is the basic support of the whole seat, and the main components of the seat are connected with the armrest.

Structure of handrail:

Metal frame: the framework of armrest, which is basically the supporting connector of the whole auditorium chair.

Handrail board: made of other materials such as wood or plastic,

Tablet mechanism: the armrest of the auditorium chair can be equipped with a tablet mechanism for meeting minutes.

Seat bag

It is generally composed of fabric, sponge pad, inner frame, rotating mechanism and outer plate.

Fabric: linen, velveteen or automobile velvet are generally used; Some also use genuine leather and imitation leather as fabrics, etc.

Sponge pad: made of PU (polyurethane) foam, with a density of 40 ~ 60kg / m3.

Inner frame: according to different designs, curved wood splint and plastic plate are used for simple structure, and spring metal frame and plastic inner shell are used for advanced seats.

Rotating mechanism: it is divided into gravity recovery mechanism and spring recovery mechanism. The gravity recovery mechanism is simple and reliable without maintenance. It is often equipped with rubber silencing pad to eliminate impact and noise during recovery; The use of spring recovery can reduce the volume of the recovery mechanism, and the structural design is flexible. With the addition of damping device, the recovery movement can be controlled, the movement becomes slow, and the impact and noise can be completely eliminated; In addition, the European patented technology pneumatic recovery from France has been introduced into the Chinese market. The starting device makes the seat cushion of the chair not make any disturbing sound in the process of opening and recovery. It is light, elegant, safe, firm and hidden, which does not affect the appearance of the seat.

Outer plate: it can be made of wood, plastic or other materials according to the design needs. Its main function is to decorate and connect with the recovery mechanism.

knapsack

It is generally composed of fabric, sponge pad, inner panel and outer panel.

Fabric: linen, velveteen or automobile velvet are generally used; Some also use genuine leather and imitation leather as fabrics.

Sponge pad: made of PU (polyurethane) foam, with a density of 35 ~ 50kg / m3.

Lining board: according to different designs, curved wood plywood and metal frame structure can be used. When metal frame structure is used, it is called steel frame. Sometimes the steel frame is directly buried in sponge.

Outer plate: it has the same function as the outer plate of the seat. It can also be made of wood, plastic or other materials. Its main function is to decorate and connect with the handrail.

The size of the seat also has a certain range. According to the ergonomic design, the size is generally controlled in:

Seat height: the distance from the highest point of the seat surface to the ground, hard seat surface 400 ~ 420, soft seat surface 420 ~ 440mm;

Seat width: the distance between two handrails; Generally greater than 660mm;

Seat depth: the distance from the front edge of the seat plate to the backrest; Generally 400 ~ 450mm;

Back height: the dimension from the seat plate surface to the highest point of the seat back;

Total height: the distance from the highest point of the seat back to the ground;

Handrail height: the distance from the highest point of handrail to the ground;

Total depth: the distance from the foremost point of the seat to the rearmost point of the seat back, which generally affects the row spacing of the seat;

Including tablet depth: the maximum depth of the seat when the tablet is opened;

Seat inclination: the included angle between seat surface and horizontal plane, generally 2 ~ 5 °;

Back inclination: the included angle between the back and the horizontal line, generally 100 ~ 106 °

Row spacing: the distance between the front and rear middle of the two rows of seats;

Seat distance: also known as center distance, it refers to the distance between the left and right seats;

Arc row radius: row row curvature radius of arc-shaped row;

In addition, a number of accessories are available, and the functional features are as follows:

Writing board

The tablet is an accessory specially designed for seats used in meetings or lectures, which is convenient for taking notes and placing documents and books during meetings or classes. Generally, there are two types: open and hidden.

Cup holder

Cup holders are divided into handrail cup holders and external cup holders. Handrail cup holders are mainly used in cinemas and places where it is often necessary to use. Most of the armrest cup holders are designed into an integrated structure with the armrest.

The external cup holder is mostly used in meetings, classes and other places, and can only be used when necessary. There are two kinds of external cup holders: front cup holder and rear cup holder.

Book Network

Book net is also a special accessory of conference chair.

Number plate

There are two commonly used number plates, one is called seat plate, the other is called line number plate. The seat plate indicates the number of seats in each row, and the row number plate indicates the order of rows.

Movable foot and tripod

In places where fixed installation is not allowed on the ground or the position needs to be changed frequently, movable feet or seats with movable foot stands need to be used.