WO2020242393A1

WO2020242393A1 - Ball rail system for drawers

Info

Publication number: WO2020242393A1
Application number: PCT/TR2019/050380
Authority: WO
Inventors: Evren Urak
Original assignee: Samet Kalip Ve Madeni̇ Eşya San Ti̇c. A.Ş
Priority date: 2019-05-27
Filing date: 2019-05-27
Publication date: 2020-12-03

Abstract

The present invention relates to a ball rail system for extending-retracting operations of a drawer in a drawer cabinet which is secured and allows using the internal volume of the drawers in the most efficient manner. In particular, the present invention relates to a ball rail system having a ball retainer plate (29) being positioned on the leg of the said ball retainer (7) that is closer to the drawer base, and allowing at least three ball housings (31) to be located on the same plate in a gapless manner.

Description

BALL RAIL SYSTEM FOR DRAWERS

Technical Field of the Invention

The present invention relates to a ball rail system for extending-retracting operations of a drawer in a drawer cabinet which is secured and allows using the internal volume of the drawers in the most efficient manner.

Background of the Invention

Slide rail drawers known in the state of the art generally adopt a sliding mechanism that is usually fixed from inside or outside. Drawers are usually mounted on drawer cabinets having rail systems. These rails allow for extending the drawer out from the cabinet fully, thereby granting complete access to the drawer. Furthermore, drawers are maintained in a horizontal direction independently of drawer's extension distance from the cabinet.

Rail mechanisms can be separated into two groups as fully extending rails and partially extending rails. Full extension rails allow for fully extending the drawer out of the cabinet. Partial extension rails, on the other hand, allow for extending the drawer partially while keeping a certain part of the drawer inside the cabinet. Full extension rails are composed of 3 parts of metal sheets while partial extension rails consist of 2. Rail mechanisms have serious technical drawbacks. Primarily, slide mechanisms that are fixed from inside and outside require significant machining accuracy as well as installation accuracy. In case a dimensional deviation or an installation fault occurs during the installation of sliding rail, drawer will be affected directly.

Manufacturing drawer's side panels and rail's drawer sheet as two separate parts results in a reduction in the internal volume of the drawer. Moreover, the weight of the rail system also increases due to additional part installation. Consequently, it results in time loss and increases costs due to the requirement of assembling both rail system and drawer together.

Drawers have been installed to cabinet bodies by means of telescopic slides for such a long time. These said telescopic sliding rails usually comprise ball bearings facilitating their movements, however, they also aggravate installation and maintenance operations.

Being able to readily eliminate these problems and shortcomings mentioned above, as well as potential problems that may occur in the future is quite important. Developing a system for the purpose of enabling the user to access drawers easier may provide ease of use, beyond providing solutions for problems mentioned above.

Several different mechanisms have been developed in the state of the art in order to eliminate drawbacks mentioned above. The patent document bearing the number of US2015282374 discloses a slide rail assembly for mounting a lateral side of a chassis to a rack includes first and second rails and a ball assembly. A sidewall of the second rail has a mounting portion to be mounted to a mounting member on the lateral side of the chassis. The ball assembly, movably mounted between the rails in order to facilitate relative sliding thereof, comprises a ball retainer of which lateral portion corresponds in position to the space between a sidewall of the first rail and the sidewall of the second rail. The sidewall of the second rail includes a projecting block for pushing the lateral portion of the ball retainer, keeping the lateral portion close to the sidewall of the first rail.

Another patent document that may be referred to in the state of the art is the patent document bearing the number or US2015189990. Said patent document discloses a sliding device for guiding a drawer such that the drawer is extended from or retracted into a storage body. Said sliding device comprises sliding rails each of which having a pair of flanges, and balls slidably connecting the sliding rails to each other. In the said sliding device, each flange includes a raceway on which a portion of the corresponding ball is disposed. These raceways guide the ball such that the ball rolls in a direction of extension or retraction of the drawer.

However, since movement of said rails cannot be controlled in ball rails, use of drawer is also affected negatively.

In other words, proposed system according to the present invention relates to increasing the movement performance of the drawer by means of preventing involuntary movements of drawers through retainers used in ball rail system. Obiects of the Invention

With reference to prior art, the object of the present invention is to allow for controlling drawer movements in drawer systems.

Another object of the present invention is to increase the utilizable drawer volume in drawer systems.

Another object of the present invention is to eliminate weight problems, assembly problems as well as volume losses in drawer systems by means of providing the drawer side panel and drawer rail sheet in a uniform structure.

Brief Description of the Invention

In order to achieve the object of the present invention, units required for controlling the movement of the drawer are positioned on rails, in the system involving the installation of a drawer into a drawer cabinet wherein the system is defined in the first claim and other following dependent claims. The system comprises stopper element groups functioning in an integrated manner with the system in order to determine the extended position of the drawer. Furthermore, drawer rail assembly which is in a uniform structure with drawer's side panel, provides volume savings, ease of mountability as well as a decrease in the weight. By means of the triple extension structure, the present invention allows full extension of drawer.

Structural and characteristic features and all advantages of the present invention may be understood more clearly by means of the figures described below and the detailed description provided with reference to these figures, therefore the patent claims should be evaluated by taking said figures and detailed description into consideration. Individual dimensions and dimensions relative to adjacent components in the annexed figures are provided solely for illustrative purposes and therefore these dimensions should not be considered restrictive or limiting for the structural and functional features of the present invention.

Detailed Description of the Figures

A ball rail system and application implemented in order to achieve the object of the present invention are illustrated in the following figures, wherein;

Figure 1 illustrates the frontal view of ball rail system in the proposed drawer system according to the present invention.

Figure 2 illustrates the detailed view of the drawer lock in the proposed drawer system according to the present invention.

Figure 3 illustrates the detailed view of ball bearing house stoppers in the proposed drawer system according to the present invention. Figure 4 illustrates the view of the ball bearing house connections in the proposed drawer system according to the present invention.

Figure 5 illustrates the top perspective view of the front panel stopper in the proposed drawer system according to the present invention.

Figure 6 illustrates the top perspective view of the stopper block in the proposed drawer system according to the present invention.

Figure 7 illustrates the view of sheet sliders with different dimensions in the proposed drawer system according to the present invention.

Figure 8 illustrates the view of rear and base retainer of the drawer according to an embodiment of the proposed drawer system of the present invention.

Figure 9 illustrates the view of rear and base retainer of the drawer according to another embodiment of the proposed drawer system of the present invention.

Figure 10 illustrates the view of rear and base retainer of the drawer according to another embodiment of the proposed drawer system of the present invention. Figure 11 illustrates mounted view of the proposed drawer system on the cabinet according to the present invention.

Figure 12 illustrates the view of the ball retainer in the proposed drawer system according to the present invention.

Figure 13 illustrates the view of the ball bearing house in the proposed drawer system according to the present invention.

Figure 14 illustrates the view of the ball retainer stopper in the proposed drawer system according to the present invention.

Reference Numerals in the Fiaures

Components illustrated in the figures are enumerated individually and numbers corresponding to these components are described below.

1) Ball Rail System

2) First Sheet Metal

3) Second Sheet Metal

4) Third Sheet Metal

5) Ball

6) Ball Bearing House

7) Ball Retainer

8) Ball Bearing House Stopper 9) Ball Bearing House Connection

10) Drawer Lock

11) Drawer Front Panel Stopper

12) Stopper Block

13) Ball Retainer Gap

14) Drawer Lock Protrusion

15) Drawer Handle

16) Drawer Rear Retainer

17) Drawer Base Retainer

18) Locking Mechanism Housing

19) Ball Retainer Lock

20) Ball Retainer Stopper

21) First Sheet Metal Inner Groove

22) Second Sheet Metal Outer Groove

23) Second Sheet Metal Inner Groove

24) Third Sheet Metal Outer Groove

25) Release Lever

26) Lock Lever

27) Lock Tab

28) Fastening Tabs

29) Ball Retainer Plate

30) Ball Bearing Plate

31) Ball Housing

Detailed Description of the Invention

As it is shown in Figure 1, a ball rail system (1) is positioned so that its rails and bearings may form a group to each other. A ball bearing house (6) is slidably positioned between a first sheet metal inner groove (21) of the first sheet metal (2) and a second sheet metal outer groove (22) of a second sheet metal (3). Said second sheet metal (3) is slidably positioned inside said first sheet metal (2) so that the mounting hole of the second sheet metal (3) may slide in the opposite direction of a stopper block (12) positioned on the first sheet metal (2). A ball retainer (7) is slidable positioned between said second sheet metal (3) and a third sheet metal (4). Balls (5) located within each bearing hole of said ball retainer (7) are positioned between the second sheet metal inner groove (23) of the second sheet metal (3) and a third sheet metal outer groove (24) of the third sheet metal (4). The cabinet sheet metal that allows installation of rail to the cabinet may be the first sheet metal (2). Drawer sheet metal on which drawer installation is performed may be the third sheet metal (4). Middle sheet metal which allows the connection between the drawer sheet metal and the cabinet sheet metal may be the second sheet metal (3). Gripping and movement ability between the drawer sheet metal, middle sheet metal and cabinet sheet metal may be provided by means of several different components (balls, pulleys, gears, toothed racks, cages, etc.)· In order to provide these functionalities balls (5) are utilized in the inventive ball rails. These balls (5) of spherical structure are capable of moving on all axes. In order to prevent balls (5) from moving in unwanted directions, said sheet metals are shaped as first sheet metal inner groove (21), second sheet metal outer groove (22), second sheet metal inner groove (23), third sheet metal outer groove (24). The system (1) comprises components such as ball retainer (7) and ball bearing house (6) in order to synchronize ball (5) movements and to prevent discomforting noises and unnecessary slides within the rail. As it can be seen in Figure 2, drawer lock (10) comprises one lock lever (26) connected to a release lever (25). Said lock lever (26) is as flexible as a spring. Said release lever (25) includes a lock tab (27) at a near end of said release lever (25) at the reference point where drawer lock (10) is fixed. Said lock tab (27) is sized and shaped so that it may fit into a drawer lock protrusion (14). Said drawer lock protrusion (14) located on the second sheet metal (3) is positioned so that it may be away from the horizontal center of the second sheet metal (3) and closer to an edge. Once the drawer having ball rail system (1) is extended, it slides until the drawer lock (10) and the lock tab (27) which are incorporated into the third sheet metal (4) are coupled together with the drawer lock protrusion (14). Thus, the separation of said third sheet metal (4) from said second sheet metal (3) can be prevented.

As it can be seen in Figure 3, ball bearing house stoppers (8) are positioned towards the open end of the drawer cabinet of the first sheet metal (2). Said ball bearing house stoppers (8) are positioned at both widthwise ends of the first sheet metal (2) and into the folds of rail in order to create a block in front of the ball bearing house (6). Sliding movement of the second sheet metal (3) towards the first sheet metal (2) is limited by means of these ball bearing house stoppers (8). While the drawer is being extended, the second sheet metal (3) continues with its sliding movement until the ball bearing house (6) collides with ball bearing house stoppers (8).

Figure 4 illustrates ball bearing house connections (9) positioned at both sides and at the end portion of the second sheet metal (3). Besides ball bearing house stoppers (8), sliding movement of the second sheet metal (3) towards the first sheet metal (2) is also limited by means of said ball bearing house connections (9). While the drawer is being extended, ball bearing house connections (9) collide with the ball bearing house (6) and the second sheet metal (3) slides until it reaches to ball bearing house stoppers (8).

Figure 5 illustrates a drawer front panel stopper (11) that extends as an arc over the second sheet metal (3). While the drawer is being retracted, the third sheet metal (4) slides until the drawer front panel reaches to the drawer front panel stopper (11). While the movement of the drawer is decelerated and colliding of cabinet structure and drawer front panel and causing damage to the system and producing discomforting noises may be prevented. The movement of the ball retainer (7) is limited by means of said ball retainer lock (19).

As shown in Figure 6, once the drawer is fully retracted, fastening tabs (28) engage with a stopper block (12) so that drawer does not extend on its own without applying force. Said stopper block (12) is attached to the end portion of the first sheet metal (2). In an embodiment of the present invention, stopper block (12) may be manufactured from rubber, nylon or any other flexible material and it is attached to a slot at the middle by means of a protrusion extending over the first sheet metal (2). Said fastening tabs (28) are slightly bent towards one another and the distance between them is slightly less than the width of the stopper block (12). Said fastening tabs (28) may be positioned at the end portion of the third sheet metal (4). In case where said third sheet metal (4) is in a uniform structure with the drawer side panel, fastening tabs (28) may not be present at the end portion the sheet metal. In that case, fastening tabs (28) may assume the function of stopping rails. As it is shown in Figure 7, rail groups within rail systems with different lengths have lengths with specific ratios among each other. In general, the first sheet metal (2) is shorter than the third sheet metal (4) by approximately 2 millimeters. The reason that the stopper block (12) located at the rear portion of the first sheet metal (2) is positioned in a spaced manner by approximately 2 millimeters. In other words, portions of the first sheet metal (2) and the third sheet metal (4) that face towards the front panel of the drawer are aligned. The second sheet metal (3) is shorter than the third sheet metal (4) by approximately 15 millimeters. Said dimensional ratios are being provided with optimized lengths that are required for the full extension of the drawer and in a manner in which the entire volume of the drawer may be used comfortably. Sheet metal lengths in rails vary in proportion to the depth of the drawer and the present invention contemplates on various drawer depths and lengths.

A drawer structure according to an embodiment of the present invention is illustrated in Figure 8. Drawer rear panel forming the rear wall of the drawer is mounted by means of drawer rear retainers (16) Thus, mounting holes located at the rear wall of the drawer are fixed together with drawer rear retainers (16). Said drawer rear wall is the one that locates at the opposite of the drawer front panel. A drawer base is supported and positioned by means of a drawer base retainer (17), thereby the durability and the precise positioning of the drawer base is provided. In the said embodiment of the present invention, a drawer handle (15) with curved form and having metal side form unit conceals the system below the curved portion in a manner that ball rail system (1) may not be seen from the outside. Furthermore, said drawer handle (15) is positioned and shaped in a manner that may provide ergonomic grip to the user and that may prevent injuries that may potentially occur as a consequence of the contact of user's hand and the side panel.

Figure 9 illustrates a drawer structure according to another embodiment of the present invention. In the said embodiment of the present invention, the system comprises a locking mechanism housing (18) in order for allowing the fitting of a locking mechanism. Said locking mechanism housing (18) is being implemented in a manner that it may be large enough to facilitate the fitting of the locking mechanism and that mounting holes are easily accessible. Analogous with the first embodiment of the present invention, it also comprises said drawer base retainer (17). In the said embodiment, the drawer handle (15) having a curved form is positioned in a manner that it may be away from the ball rail system (1) and towards the middle portion. Said drawer handle (15) provides an ergonomic grip and is shaped and positioned in a manner that it may be grasped as a whole by a user's hand. Said drawer handle (15) is almost in the shape of a hemicycle.

Figure 10 illustrates another drawer structure according to another embodiment of the present invention. In the said embodiment of the present invention, the system comprises a locking mechanism housing (18) in order for allowing the fitting of a locking mechanism. Said locking mechanism housing (18) is being implemented in a manner that it may be large enough to facilitate the fitting of the locking mechanism and that mounting holes are easily accessible. Analogous with the second embodiment of the present invention, it also comprises said drawer base retainer (17). Drawer handle (15) having a straight form is in a suitable geometrical shape in order to ensure a firm grip from different positions. Said drawer handle (15) ensures an ergonomic grip and is positioned and shaped so that it may be grasped from a desired position. Said drawer handle (15) is almost in the shape of a straight handle.

Figure 11 illustrates the third sheet metal (4) structure according to another embodiment of the present invention. In the said embodiment of the present invention, the third sheet metal (4) is in a uniform shape with the drawer structure. The fact that the system does not comprise a separate third sheet metal (4) allows for precluding difficulties in terms of calculating positions, assembly, time and production. Furthermore, capabilities of gripping between the drawer and the cabinet and of mobility are increased by means of a third sheet metal (4) that is in a uniform structure with the drawer structure. Undesired movements of the drawer may be prevented even further. Analogous with the second embodiment of the present invention, it also comprises said drawer base retainer (17). Drawer handle (15) having a straight form is in a suitable geometrical shape in order to ensure a firm grip from different positions. Said drawer handle (15) ensures an ergonomic grip and is positioned and shaped so that it may be grasped from a desired position. Said drawer handle (15) is almost in the shape of a straight handle.

As it can be seen in Figure 12, ball retainer (7) may slide between the second sheet metal (3) and the third sheet metal (4) and comprises ball housings (31) in which balls may engage. A portion of said ball retainer (7) comprises portions separated with ball retainer gaps (13). Said holes in which balls (5) may engage into are sized and shaped in a manner that they may retain balls (5). Said holes extend along the ball retainer (7). During the retracting operation of the drawer, third sheet metal (4), second sheet metal (3), ball bearing house (6) and ball retainer (7) slide towards the inside of the cabinet, whereas during the extending operation of the drawer these components slide towards the outside of the cabinet. The sliding motion of said ball retainer (7) relative to the second sheet metal (3) is limited by means of the ball retainer lock (19) and a ball retainer stopper (20). Said ball retainer (7) slides towards the outside of the cabinet until it leans on the ball retainer lock (19) attached to the second sheet metal (3). Ball retainer (7) portion that will engage into the base of the drawer comprises a ball retainer plate (29) but not ball retainer gaps (13). Said ball retainer plate (29) is positioned at a point in which the mass point of the system may engage the most. Thus, the durability of the system is increased and sagging of the drawer can be prevented. The length of said ball retainer plate (29) may differ depending on the systems comprising sheet metals of different lengths illustrated in Figure 7.

As it is shown in Figure 13, said ball retainer plate (29) is plate constituted in order to slide between ball bearing house (6), the first sheet metal (2) and the second sheet metal (2) and comprises ball housings (31) that retain balls (5). Said ball bearing house (6) slides towards the inside of the cabinet during the retracting operation of the drawer, whereas it slides towards the outside of the cabinet during the extending operation of the drawer. The second sheet metal (3) is integrated frictionally with the first sheet metal (2) by means of the ball bearing house (6). Once the drawer is extended, the second sheet metal (3) slides towards the outside of the cabinet until ball bearing house connections (9) collide with the ball bearing house (6) and ball bearing house (6) collides with ball bearing house stoppers (8). In the embodiment in which said all bearing house (6) comprises only one ball (5), a ball bearing plate (30) that does not comprise any balls at the both sides of the ball (5) located in the middle is being positioned. Said ball bearing plate (30) is positioned at a point in which the mass point of the system may engage the most. Thus, the durability of the system is increased and use of excessive amount of balls (5) can be prevented at the same time. The length of said ball bearing plate (30) may differ depending on the systems comprising sheet metals of different lengths illustrated in Figure 7.

As shown in Figure 14, ball retainer stoppers (20) extend from the second sheet metal (3) to outside. Said ball retainer stoppers (20), being in a couple of tab form, are positioned near to the end of the second sheet metal (3) towards the cabinet. Once drawer is drawn back to its retracted position, ball retainer (7) slides into the cabinet in a manner that it will lean on ball retainer stoppers (20) extending from the second sheet metal (3).

In summary, the essential working principle of the present invention is to prevent the sagging of drawers and to increase the durability of the ball rail system (1) by means of said ball retainer plate (29) which is positioned on one of the legs of said ball retainer (7) and that allows at least three ball housings (31) to be present on the same plate with one another. To provide a more durable drawer system by means of a rail system that is in a uniform structure with the drawer cabinet ensuring lightness, precise mounting and assembly with lower amount of moving parts is among the technical advantages provided by the present invention.

An aspect of a preferred embodiment of the present invention is to comprise a ball rails system (1) for extending-retracting operations of a drawer in a drawer cabinet, comprising; a first sheet metal (2) that is telescopically integrated with the second sheet metal (3) and can be attached to a cabinet or a drawer; a third sheet metal (4) that is telescopically integrated with said second sheet metal (3) and can attached to the cabinet or the drawer; at least one ball retainer (7) that is slidably connected between said third sheet metal (4) and said second sheet metal (3); at least one ball retainer gap (13) being formed as an opening between the balls (5) located on said ball retainer (7); at least one ball bearing house (6) being slidably positioned between a first sheet metal inner groove (21) of said first sheet metal (2) and a second sheet metal outer groove (22) of said second sheet metal (3); ball housings (31) wherein the balls (5) on said ball retainer (7) and said ball bearing house (6) are located.

Another aspect of a preferred embodiment of the present invention is to comprise a ball retainer plate (29) being positioned on the leg of the said ball retainer (7) that is closer to the drawer base and allowing at least three ball housings (31) to be located on the same plate in a gapless manner.

Another aspect of a preferred embodiment of the present invention is to comprise a ball bearing plate (30) that does not contain any balls (5) on both longitudinal sides of the ball (5) located at the middle of longitudinal axis of said ball bearing house (6).

In another aspect according to a preferred embodiment of the present invention, said third sheet metal (4) is in a uniform structure with the drawer side panel.

Another aspect of a preferred embodiment of the present invention is to comprise a drawer lock protrusion (14) being positioned on the second sheet metal (3) and away from the transverse center of the second sheet metal (3) and closer to an edge thereof.

Another aspect of a preferred embodiment of the present invention is to comprise a drawer lock (10) being mounted to the third sheet metal (4) in a axially movable manner, allowing disconnection of the third sheet metal (4) from said second sheet metal (3), and being detachably connected to the drawer lock protrusion (14).

Another aspect of a preferred embodiment of the present invention is to comprise at least one ball retainer stopper (20) that prevents said ball retainer (7) from sliding towards the cabinet and thereby leaving from the rail system and that extends from said second sheet metal (3).

Another aspect of a preferred embodiment of the present invention is to comprise at least one stopper block (12) that is attached to the end portion of said first sheet metal (2) and that prevents the second sheet metal (3) and said third sheet metal (4) from sliding towards the cabinet and thereby leaving from the rail system.

Another aspect of a preferred embodiment of the present invention is to comprise at least one fastening tab (28) that is positioned on the end portion of the third sheet metal (4) towards the cabinet, and that may engage said stopper block (12) in order to prevent the drawer from extending without applying any force when the drawer is fully retracted.

Another aspect of a preferred embodiment of the present invention is to comprise a flexible drawer front panel stopper (11) that may stop the motion of the third sheet metal (4) by slowing its motion down in a manner that may prevent drawer front panel from slamming to the cabinet while the drawer is being retracted.

Another aspect of a preferred embodiment of the present invention is to comprise at least one ball bearing house stopper (8) that is positioned at the both ends on the transverse plane of said first sheet metal (2) and towards the inside of its rail folds in order to create a block before said ball bearing house (6) and that limits the sliding motion of said second sheet metal (3) relative to first sheet metal (2) and that is further positioned in a manner that it may be towards the open end of said first sheet metal (2).

Another aspect of a preferred embodiment of the present invention is to comprise at least one ball bearing house connection (9) that limits the sliding motion of said second sheet metal (3) relative to the first sheet metal (2) while the drawer is being extended, that allows for sliding of said second sheet metal (3) by colliding with said ball bearing house (6) and that is located on both legs and at the end portion of said second sheet metal (3).

Another aspect of a preferred embodiment of the present invention is to comprise at least one ball retainer lock (19) that limits the sliding motion of said ball retainer (7) relative to the second sheet metal (3), that allows for sliding of said ball retainer (7) outside of the cabinet and that is attached to the second sheet metal (3).

Another aspect of a preferred embodiment of the present invention is to comprise at least one drawer rear retainer (16) that may be fixed with assembly holes located at the rear wall of the drawer and that is connected to drawer side panel.

Another aspect of a preferred embodiment of the present invention is to comprise a drawer handle (15) having a curved shape that may prevent said ball rail system (1) from being seen from outside and a metal side form unit.

Another aspect of a preferred embodiment of the present invention is to comprise a drawer handle (15) that is positioned in the middle portion at the longitudinal axis of the drawer front panel and that is in almost a hemicycle shape.

Another aspect of a preferred embodiment of the present invention is to comprise a drawer handle (15) that is in a straight shape and allows being extended of the drawer front panel by gripping from any portion.

Another aspect of a preferred embodiment of the present invention is to comprise a locking mechanism housing (18) in a shape of a housing which is required for the fitting of a locking mechanism.

Claims

1) A ball rail system (1) for extending-retracting operations of a drawer in a drawer cabinet, comprising; a first sheet metal (2) that is telescopically integrated with a second sheet metal (3) and can be attached to a cabinet or a drawer, a third sheet metal (4) that is telescopically integrated with said second sheet metal (3) and can be attached to the cabinet or the drawer, at least one ball retainer (7) that is slidably connected between said third sheet metal (4) and said second sheet metal (3), at least one ball retainer gap (13) being formed as an opening between balls (5) located on said ball retainer (7), at least one ball bearing house (6) being slidably positioned between a first sheet metal inner groove (21) of said first sheet metal (2) and a second sheet metal outer groove (22) of said second sheet metal (3), and ball housings (31) wherein the balls (5) on said ball retainer (7) and said ball bearing house (6) are located characterized by comprising; a ball retainer plate (29) being positioned on the leg of the said ball retainer (7) that is closer to the drawer base, and allowing at least three ball housings (31) to be located on the same plate in a gapless manner.

2) Ball rail system (1) according to Claim 1 characterized by comprising a ball bearing plate (30) that does not contain any balls (5) on both longitudinal sides of the ball (5) located at the middle of longitudinal axis of said ball bearing house (6).

3) Ball rail system (1) according to Claim 1 characterized in that said third sheet metal (4) is in a uniform structure with drawer side panel.

4) Ball rail system (1) according to Claim 1 characterized by comprising a drawer lock protrusion (14) being positioned on the second sheet metal (3) and away from the transverse center of second sheet metal (3) and closer to an edge thereof.

5) Ball rail system (1) according to Claim 1 characterized by comprising a drawer lock (10) being mounted to the third sheet metal (4)in a axially movable manner, allowing disconnection of the third sheet metal (4) from said second sheet metal (3), being detachably connected to the drawer lock protrusion (14).

6) Ball rail system (1) according Claims 1 and 3 characterized by comprising at least one ball retainer stopper (20) that prevents said ball retainer (7) from sliding towards the cabinet and thereby leaving from the rail system and that extends from said second sheet metal (3). 7) Ball rail system (1) according to Claims 1 and 3 characterized by comprising at least one stopper block (12) that is attached to the end portion of said first sheet metal (2) and that prevents the second sheet metal (3) and said third sheet metal (4) from sliding towards the cabinet and thereby leaving from the rail system.

8) Ball rail system (1) according to Claim 1 characterized by comprising at least one fastening tab (28) that is positioned on the end portion of the third sheet metal (4) towards the cabinet, and that may engage with said stopper block (12) in order to prevent the drawer from extending out without applying any force when the drawer is fully retracted.

9) Ball rail system (1) according to Claims 1 and 3 characterized by comprising a flexible drawer front panel stopper (11) that may stop the motion of the third sheet metal (4) by slowing its motion down in a manner that may prevent drawer front panel from slamming to the cabinet while the drawer is being retracted.

10) Ball rail system (1) according to Claims 1 or 2 characterized by comprising at least one ball bearing house stopper (8) that is positioned at the both ends on the transverse plane of said first sheet metal (2) and towards the inside of its rail folds in order to create a block before said ball bearing house (6) and that limits the sliding motion of said second sheet metal (3) relative to first sheet metal (2) and that is further positioned in a manner that it may be towards the open end of said first sheet metal (2). 11) Ball rail system (1) according Claims 1 or 2 characterized by comprising at least one ball bearing house connection (9) that limits the sliding motion of said second sheet metal (3) relative to the first sheet metal (2), while the drawer is being extended, that allows for sliding of said second sheet metal (3) by colliding with said ball bearing house (6), and that is located on both legs and at the end portion of said second sheet metal (3).

12) Ball rail system (1) according to Claim 1 characterized by comprising at least one ball retainer lock (19) that limits the sliding motion of said ball retainer (7) relative to the second sheet metal (3), that allows for sliding of said ball retainer (7) outside of the cabinet and that is attached to the second sheet metal (3).

13) Ball rail system (1) according to Claim 1 characterized by comprising at least one drawer rear retainer (16) that may be fixed with assembly holes located at the rear wall of the drawer and that is connected to the drawer side panel.

14) Ball rail system (1) according to Claim 1 characterized by comprising a drawer handle (15) having a curved shape that may prevent said ball rail system (1) from being seen from outside and having a metal side form unit.

15) Ball rail system (1) according to Claim 1 characterized by comprising a drawer handle (15) that is positioned in the middle portion at the longitudinal axis of the drawer front panel and that is in almost a hemicycle shape. 16) Ball rail system (1) according to Claim 1 characterized by comprising a drawer handle (15) that is in a straight shape and allows being extended of the drawer front panel by gripping from any portion.

17) Ball rail system (1) according to Claim 1, Claim 15 and Claim 16 characterized by comprising a locking mechanism housing (18) in a shape of a housing which is required for the fitting of a locking mechanism.