RU2419577C2 - Comfortable higher-reliability passenger seat - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: invention relates to airliner passenger cabin equipment, namely, to passenger seats. Proposed seat comprises frame, support, seat, fastening system and swinging backrest. Said backrest comprises carcass coupled with device locking backrest in its whatever position, including vertical position. Passenger seat incorporates additionally the backrest vertical position lock to allow taking forces in emergent situations.

EFFECT: higher reliability and comfort.

3 cl, 5 dwg

Description

Technical field

The invention relates to the equipment of passenger compartment of passenger vehicles, in particular to the seats of passenger aircraft, and can be used in the design of high-seat seats to increase their reliability while ensuring comfort due to the controlled movement of the seatback and its reliable fixation in a vertical position for the perception of normalized loads.

State of the art

There are known designs of Lux class seats for IL-18 passenger aircraft containing a frame, a seat cushion, a backrest, armrests and a retractable footrest. In this case, the back is pivotally mounted on the frame and can deviate by an angle of up to 65 °. (See S.M. Eger. Designing passenger jets. M: Mechanical Engineering, 1964, p. 52, Fig. 18.)

Known devices for smooth and stepless regulation of the position of the back of the chair from a vertical position to an inclined position, containing a hydraulic cylinder with a spring-loaded rod (or piston), equipped with a controlled hydraulic lock. Examples of such devices can serve as devices with. USSR No. 247791 - 1967, 238356 - 1967, US patent No. 3533658 - 1970. Typically, such hydraulic cylinders are pivotally attached at one end to the structure of the chair, and the other to the back of the chair.

The disadvantage of this design of the seat is that the hydraulic cylinders can not absorb large loads acting on the seat in flight and when the aircraft moves on the ground, especially in emergency situations, which does not ensure passenger safety.

A passenger seat of increased comfort is known for a vehicle, in particular for an aircraft, comprising a backrest pivotally mounted on a seat of a chair. In this case, the seat moves in the guides, and the backrest is held by an extendable rod equipped with an electric drive. (See US patent No. 6412870, IPC B60N 2/20, 2002).

This design allows you to transform the seat for the passenger. However, such a seat is difficult in design and does not provide passenger safety in emergency situations, as it is not able to absorb normalized extreme loads.

The “Passenger seat” is known according to the patent of the Russian Federation No. 2224689, IPC B64D 11/06, 2004, which has increased comfort due to the fact that it provides horizontal movement in two perpendicular directions and rotation around the horizontal axis.

The passenger seat contains a frame on which the seat and armrests are placed. The back is mounted on the frame by means of hinges and is equipped with a device for smoothly adjusting its position, which is located in the cavity of the armrest and includes a cylinder pivotally mounted on the frame with a spring-loaded piston, which is equipped with a hollow rod protruding outside the cylinder, the end of which is pivotally connected to the back.

A device for smoothly adjusting the position of the backrest comprises a cylinder, in the cavity of which a spring-loaded piston is located, dividing the internal volume of the cylinder into two cavities. A pusher is installed inside the hollow rod rigidly connected to the piston, which is connected, firstly, with a bypass controlled valve located in the piston, and secondly, with a lever and flexible connection (cable), with a button mounted on one of the window sills. In the piston, bypass channels for the working fluid are made. In the passenger seat, known devices for smoothly regulating the position of the backrest with means for controlling the speed of flow of the working fluid during forward and reverse stroke of the spring-loaded piston are used.

A similar design is presented in the patent of the Russian Federation for a utility model (see RU No. 245989, B64D 11/06, 2002).

A disadvantage of the known designs of the seats is their low reliability, in particular, due to the low reliability of the locking mechanism of the back of the chair, since the hydraulic cylinders do not perceive the large loads acting on the chair in emergency situations.

Thus, the known design of the seats does not provide the perception of normalized overloads when the seats are positioned with the back against the flight.

SUMMARY OF THE INVENTION

The objective of the invention is to develop such a design of a comfortable passenger seat, mainly for passenger aircraft, which would have increased reliability in the perception of all regulatory loads, in particular overloads acting on the seat when it is positioned with its back on the flight, and the back against the flight, during the set life of the seat while ensuring maximum comfort for the passenger.

In addition, the design should have a minimum weight and be simple and technological in production.

According to the invention, the task is achieved in that a comfortable passenger seat containing a frame, a supporting device, a seat, a tethered system, a tiltable backrest, including a frame associated with a backrest fixing device in any of its position, is additionally equipped with a backrest locking mechanism in a vertical position.

Moreover, the backrest frame is made in its lower part with pins, and the backrest fixing mechanism in the vertical position consists of spring-loaded hinged stoppers interacting with the pins of the backrest frame and equipped with a cable release mechanism.

In addition, the stoppers are made with grooves for the trunnion pins of the frame and are mounted on a shaft mounted in the frame supports and equipped with a lever, one end connected by a spring to the chair frame, and the other end connected to the release drive cable, made in the form of an articulated lever installed in armrest of a chair.

This embodiment of the chair allows you to increase the reliability of the design under current regulatory loads, in particular, to ensure the perception of loads acting in emergency situations, and to ensure the safety of the passenger.

The list of figures in the drawings

The invention is illustrated by drawings, in which:

Figure 1 shows a General view of the chair, side view;

Figure 2 - General view of the chair, front view;

Figure 3 is a General view of the frame of the chair, side view with the armrests removed, pillows and headrests of the back and seat cushions;

Figure 4 - node A of figure 3 with a partial cutaway (the mechanism for fixing the back in a vertical position is highlighted in bold lines);

Figure 5 is a rear and bottom view of the mechanism for fixing the back in a vertical position (in a perspective view);

Information confirming the implementation of the invention

In accordance with the invention, the passenger seat comprises a frame 5, a support device 6, a seat 1, a backrest 4, armrests 3, a tie system 12 (see Figs. 1, 2).

Frame 5 is a plane-welded construction of pipes of rectangular cross section, with nodes on which the backrest frame, armrests, backrest movement mechanism, backrest fixation mechanism are fixed.

The supporting device 6 is made with mechanisms of stepless longitudinal, lateral movement of the seat and its rotation around the vertical axis, providing a comfortable passenger location in the cockpit.

The back 4 is deflected to position 4 ^a . All mechanisms designed to deflect the backrest, extend the footrest, move the seat are controlled manually using cable wires from the control levers located in the armrest of the chair.

The backrest 4 of the chair contains a pillow, a headrest 15 and a frame 17 mounted pivotally on the frame 5.

The back frame 17 (Fig. 3) is made in its lower part with the ears G provided with mounting holes for mounting on the B axis (see Figs. 3, 4, 5) installed in the support holes of the brackets 21 and 22 of the frame 5. The back frame 17 can occupy a vertical position when its reference plane makes an angle of ~ 90 ° with the floor of the cockpit, and rotate on axis B in the range from 0 to 85 ° from the vertical, occupying a deviated position.

The backrest is fixed in any intermediate positions by means of hydraulic cylinders 11 (2 pcs.), Located inside the frame 5, pivotally mounted on the frame 5 and connected to the hinge 3 of the ear of the backrest by a rod.

The hydraulic cylinders 11 are made with a spring-loaded rod and a controlled hydraulic lock.

The chair is additionally equipped with a mechanism for fixing the backrest in an upright position 20. The mechanism for fixing the backrest in an upright position 20 consists of spring-loaded hinged stoppers interacting with the trunnion frame trunnions and equipped with a cable release mechanism.

In a preferred embodiment of the invention, the brackets 21 of the frame 5 are made with supports D extending beyond the rear frame beam and having holes E for mounting the shaft 7 of the back fixing mechanism 20 in a vertical position. The shaft 7 carries at its ends stoppers (stoppers) 9 (2 pcs.), Interacting with their grooves with the pins 10 of the ears of the backrest frame 17. The shaft 7 is also equipped with a lever 23, one end with a spring 8 connected to the frame 5 of the chair, and the other an end provided with a stop-limiter interacting with the supporting surface of the frame 5 and connected to the cable of the unlocking drive (not shown in the drawing). The drive for unlocking the back of the chair is made in the form of an articulated lever 14 installed in the arm of the chair and connected by one cable to the lever 23, and the other two with hydraulic locks of the hydraulic cylinders 11. Stop 9 in the vertical position of the back of the chair hold the pins 10 and together with the brackets of the frame 21 and the ear G perceives all the load on the back of the chair from the mass of the passenger, taking into account its increase from overloads during emergency landings, face or back to the direction of flight. In this case, the hydraulic cylinders 11 are completely unloaded, which fixes the back in intermediate positions.

The position of the backrest is controlled by the passenger as follows.

When you press the lever 14 (Fig. 1) using cable wires, the hydraulic cylinders 11 are removed from the hydraulic locks and at the same time the lever 23 is rotated with the shaft 7, overcoming the force of the spring 8 and releasing the pins 10 of the backrest.

Then the passenger can tilt the back back to any angle.

When removing the load from the lever 14, the hydraulic cylinders 11 are locked with hydraulic locks, fixing the back in a deviated position, and the stoppers 9 are pressed up to the stop in the frame of the chair.

The backrest is moved forward to the stop by the springs of the hydraulic cylinders when the lever 14 is pressed again and the load is removed from the back of the chair. In this case, the stoppers 9 are pressed out by the pins 10, overcoming the resistance of the spring 8. In the final position of the back, the stoppers 9 are rotated by the shaft 7 and fix the pins 10 under the action of the spring 8 with their grooves, ensuring a reliable position of the backrest in a vertical position (during takeoff and landing).

The backrest is moved back by a passenger applying force to the backrest cushion. When this occurs, the compression of the springs of the hydraulic cylinders 11.

The backrest is locked in the raised position by the stop 9. The stop 9 under the action of the springs 8 is constantly pushed up and holds the trunnion 10 of the back frame with its groove.

When the load is applied from the cable drive in the direction C to the lever 23 connected to the shaft 7, the latter rotates and the stops 9 release the pins 10.

The control of the lever 23 is carried out manually using cable wires from the control lever 14.

When you press the lever 14 (Fig. 1), the force is transmitted through the cable wiring to the hydraulic cylinders 11 (2 pcs.), Which are unlocked and the shaft 7 is rotated at the same time, releasing the pins 10 of the backrest.

Then the passenger can tilt the back back to any angle. In this case, energy is accumulated by the hydraulic cylinder due to compression of the spring.

When removing the load from the lever 14, the hydraulic cylinders fix the back in a deviated position, and the stoppers 9 are pressed up to the stop in the frame of the chair.

The backrest is moved forward to the stop by the springs of the hydraulic cylinders when the lever 14 is pressed again and the load is removed from the back of the chair. In this case, the hydraulic cylinder rods move back to the stop, moving the backrest to a vertical position, and its pins 10 press the stoppers until they trigger. In this position, the stoppers 9 rotate under the action of the springs 8 and fix the pins 10 with their grooves, ensuring a reliable position of the back during takeoff and landing.

This embodiment of the chair allows for a clear fixation of the back of the chair with the passenger and reliable operation of the chair under all operating loads.

The tests carried out confirmed its high reliability under the influence of standard loads corresponding to emergency landing when the seat is located against the flight.

Claims (3)

1. A comfortable passenger seat of increased reliability, mainly for the passenger plane, comprising a frame, a support device, a seat, an attachment system, a tiltable backrest, including a frame associated with a backrest fixing device in any of its position, including vertical, characterized in that that it is additionally equipped with a mechanism for fixing the backrest in an upright position to ensure the perception of loads acting in emergency situations. 2. A comfortable passenger seat of increased reliability according to claim 1, characterized in that the backrest frame is made in its lower part with pins, and the backrest locking mechanism in a vertical position consists of spring-loaded hinged stoppers interacting with the pins of the backrest frame and equipped with a cable drive decryption. 3. A comfortable passenger seat of increased reliability according to claim 1 or 2, characterized in that the stoppers are made with grooves for the trunnion pins of the frame and mounted on a shaft mounted in the frame supports and equipped with a lever, one end with a spring connected to the frame of the chair, and the other the end connected to the release drive cable, made in the form of an articulated lever mounted in the armrest of the chair.

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