WO2014193321A1

WO2014193321A1 - Lock system for a plane seat dining table

Info

Publication number: WO2014193321A1
Application number: PCT/TR2014/000107
Authority: WO
Inventors: Aykut GUNER; Birol TUREDI; Ugur Akbaba; Mehmet Ali GUZEL; Serkan Kadas; Fatih YILDIZ
Original assignee: Ucak Koltuk Uretimi Sanayi Ve Ticaret Anonim Sirketi
Priority date: 2013-05-28
Filing date: 2014-04-02
Publication date: 2014-12-04

Abstract

A lock system comprising a main frame (1), a handle pin (3) extended within said main frame (1), a handle (4) connected to one end of said handle pin (3) in such manner to have freedom of movement around its axis, and a spring (2) placed around the idle tip section of the handle pin (3) in the backrest section in such manner to surround the handle pin (3) in order to keep said handle (4) fixed at designated position, characterized in comprising a handle pin release (3.2) provided in the section of the handle pin (3) where spring (2) is placed, and at least one spring disassembly release (2.1) which enables the spring (2) to release from said handle pin release (3.2) by being structured in such manner to enable external intervention to the spring (2) on the main frame (1).

Description

LOCK SYSTEM FOR A PLANE SEAT DINING TABLE

T#ehiiieisi Field

The present invention relates to the lock system of the tables located at rear section of the plane seats.

The present invention particularly relates to a locking system for the service tables on which food and beverages are placed in the aircrafts where ergonomics and aesthetics come into prominence.

Prior Art

Today, various apparatus are developed for comfort and ease of the passengers in the long distance transportation vehicles such as planes or intercity buses. The foremost among these apparatus is the small tables placed in rear sections of the seats. The passenger can put the book s/he reads, the laptop s/he uses on these tables. At the same time, s/he can also use this table in the form of a service table by placing the complimentary food and drink distributed on suitable points on the table. in the prior art, all technological accessories of the transportation vehicles, in particular the modern transportation vehicles such as planes and high-speed train, are either subjected to maintenance or replaced completely at certain periods. Assembly and/or disassembly of the lock spring which is most maintenance demanding part of behind the seat service tables in the prior art is challenging alongside the handle used for opening the service table.

In the prior art, some parts of the service tables frequently suffer from deformation, moreover, assembly and disassembly of these service tables are extremely challenging.

In the prior art,- the ^' lock system disposed on th© behind th© ssat tray is rotated .either clockwise or counterclockwise in order to activate the behind the seat tabies. However, during rotation, the lock system in rotation scuffs to said behind the seat tray thus forming scratches.

One of the patents available in literature with respect to the subject matter is the Turkish patent application No. TR 2012/01234, titled "Vehicle seat service embodiment". Said invention relates to vehicle seat tables comprising tablets positioned in a hinged manner. However, said technique lacks a system that facilitates assembly of the lock system springs mentioned above.

Another patent available In the literature with respect to this subject matter is the international patent application no. WO2009/054817 entitled "Passenger Service Table Detached From The Front Seat". In said application, the service tables are placed between the seats rather than the rear parts of the seats. However, said service tables lack slots suitable for placing equipment such as glass, etc. distributed during the service. Therefore, in case the vehicle brakes or hits the ditch, the vehicle, thus the table, sways. As a result, the hot or cold beverage inside the glass might spill on the passenger, thus causing harm to the passenger. Moreover, when in open position, said service table stands immediately above the passenger's legs. This situation restricts the movement area of the passenger and annoys the passenger.

In conclusion, due to the drawbacks mentioned above and the inadequacy of the existing solutions regarding the subject matter, it is required to make a development in the related technical field.

Objects of the Invention

The present invention relates to a lock system for the vehicle seats service tables which meets the aforementioned requirements, eliminates all disadvantages and introduces some additional advantages.

The main object of the invention is to facilitate assembly and disassembly of the elements associated with the lock system which is the most maintenance demanding part of the behind the seat service tables alongside maintenance of said part, thus to reduce labor and cost rates.

Another object of the present invention is to assure continuous comfort for the passenger through rapid intervention if the lock system is deformed during the travel due to inappropriate use thereof.

Another object of the present invention is to provide an ergonomic structure and to facilitate assembly and disassembly thereof. In order to fulfill all the objects, the present invention which is mentioned above and will be understood from the detailed description provided below, relates to a lock system comprising a main frame, a handle pin extended within said main frame, a handle connected to one end of said handle pin in such manner to have freedom of movement around its axis and a spring placed around the idle tip section of the handle pin in such manner to surround the handle pin in order to keep said handle fixed at a designated position, Said spring system comprises a handle pin release provided in the section of the handle pin where the spring is placed,

at least one spring disassembly release which enables the spring to release from said handle pin release by being structured in such manner to enable external intervention to the spring on the main frame.

The structural and characteristic properties of the invention and all advantages introduced by the lock system of the vehicle seats service tables will be understood more clearly by virtue of the detailed description provided herein and therefore evaluation should be made by taking these figures and the detailed description into consideration.

Figures for Facilitating Understanding of the Invention

Figure-1 is the perspective view of the front face of the service table lock system facing the passenger.

Figure-2 is the 2D view of the rear face of the service table lock system facing the backrest of the seat.

Figure-3 is the perspective view of the rear face of the service table lock system facing the backrest of the seat.

Figure-4 is the perspective view of the rear face of the service table lock system facing the backrest of the seat from a different angle.

Figure-5 is the 2D view of the service table lock system from bottom.

Figure-6 is the individual and perspective view of the handle pin, which is the interconnecting element of the handle and the spring. The drawings are not necessarily drawn to be scaled and details not necessary for understanding the present invention might have been omitted. Furthermore, the elements which are at least significantly identical or which have at least significantly identical functions are designated with same number.

Description of Part References

1- tin fram®

2^» Spring

2.1^» Spring disassembly release

3- Handle pin

3.1- Handle pin head

3.2 Handle pin release

3.3- Connection part

3.4- Handle pin frame

3.5- Handle connection point

4- Handle

5- Seat fastener

Detailed Description of the invention

In this detailed description, the preferred embodiments of the lock system of the plane seats service tables of the invention are described only for a better understanding of the subject matter without any limiting effects.

In Figure-3, a perspective view facing the backrest of the seat and illustrating the inner structure of the lock system in detail is presented. Accordingly, a main frame (1) also forming the backbone of said invention where all elements are connected, a handle pin (3) positioned within a slot structured along the depth of said main frame (1), a handle (4) connected to the end of said handle pin (3) at the passenger side in such manner to have freedom of movement around its axis, and a spring (2) placed around the idle tip section of the handle pin (3) in the backrest section in such manner to surround the handle pin (3) in order to keep said handle (4) fixed in either locked or unlocked position is placed. A handle pin release (3.2) is provided in the section of the handle pin (3) where spring (2) is placed. There is at least one spring disassembly release (2.1) located inside the main frame (1) and releases the spring (2) from said handle pin release (3.2) with external intervention. Seat fasteners (5) preferably positioned in the corners of the main frame (1) are illustrated as protrusions from said main frame (1). In Figure-6, an individual perspective view of the handle pin (3) positioned within a slot structured along the depth of said main frame (1) and disposed between the spring (2) and the handle (4). Handle pin (3) is connected to the spring (2) from one end and with the handle (4) from the other end. The handle connection point (3.5) which is the end of the handle pin (3) of the passenger side connects the handle pin (3) to the handle (4). The spring (2) is wrapped around the connection part (3.3), disposed between the handle pin frame (3.4) and the handle pin head (3.1) and having an angled form, and passes through the handle pin release (3.2) which is the void between the handle pin frame (3.4) and the handle pin head (3.1).

As the handle (4) blocks the tray of the service table when in horizontal position, said service table cannot be opened. However, when the handle (4) is rotated 90° in any direction and brought to vertical position; the handle (4) does not prevent the service table from opening as it does not block the tray of the service table.

The handle (4) is the point where the user initiates the rotation movement, thus where the system starts to function. When the user wishes to open his/her service table, s/he rotates the handle (4) 90° either clockwise or counterclockwise. The handle (4) transfers the motion it receives, to the handle pin (3) through handle connection point (3.5).

The function of the handle pin release (3.2), a detailed view of which is provided in Figure-6 is to compress and fix the spring (2) between the handle pin head (3.1) and the handle pin frame (3.4). Another function of the connection part (3.3) which interconnects the handle pin head (3.1) and the handle pin frame (3.4) is to enable rotation of the handle (4) with 90° period. The spring (2) wrapped around the connection part (3.3) which has an angled form, and compressing the connection part (3.3) locks the handle pin (3), and thus the handle (4) connected thereto, and prevents thereof from rotating. In the event that the connection part (3.3) is selected to have a square form with its main lines; the spring (2) expanding as the user forces the handle (4) to rotate up to approximately 45° in order to release the lock system releases the handle pin connection point (3.3) and the lock system is unlocked. Thereafter, when the handle is rotated approximately 45°, the spring (2) starts to recompress the handle pin head connection part (3.) and the system is locked again. Such locking and unlocking of the lock system is completed at 90°. In other words, the handle (4) rotates with 90° period.

With reference to the Figure-2, Figure-3 and Figure-4; the function of the spring disassembly release (2.1), which has essentially one void within the main frame (1) facilitates the removal operation of the spring (2). The spring (2) is pushed upwards by means of an apparatus inserted from the spring disassembly release (2.1). The spring (2) is then fully released from the handle pin release (3.2), thus from the handle pin (3) by virtue of said upward movement. The spring (2) released in this manner can be disassembled from the system.

As illustrated in Figure-3, the protrusions in the corners of the main frame (1) denominated as the seat fastener (5) fit into holes available in the backrest of the seat. In this manner, the seat fasteners (5) fix the main frame (1) and thus all other elements connected thereto, to the seat.

Claims

1. A lock system comprising a main frame (1), a handle pin (3) extended within said main frame (1), a handle (4) connected to one end of said handle pin (3) in such manner to have freedom of movement around its axis, and a spring (2) placed around the idle tip section of the handle pin (3) in the backrest section in such manner to surround the handle pin (3) in order to keep said handle (4) fixed at designated position, characterized in comprising

a handle pin release (3.2) provided in the section of the handle pin (3) where spring (2) is placed,

at least one spring disassembly release (2.1) which enables the spring (2) to release from said handle pin release (3.2) by being structured in such manner to enable external intervention to the spring (2) on the main frame (1).

2. A lock system according to Claim 1 characterized in that the handle (3) comprises a handle pin frame (3.4) positioned inside the main frame (1).

3. A lock system according to Claim 2 characterized in comprising a handle pin head (3) structured following said handle pin frame (3.4) and provided in the seat side of the handle pin (3).

4. A lock system according to Claim 2 and 3 characterized in comprising a connection part (3.3) in square form structured between said handle pin head (3.1) and handle pin frame (3.4).

5. A lock system according to Claim 1 characterized in comprising a handle connection point (3.5) which connects the handle (4) to the handle pin (3) and is provided in the end of the handle pin (3) of the passenger side.

6. A lock system according to Claim 1 characterized in comprising at least one fastener (5) for connecting the main frame (1) to the seat.