WO2014102367A1

WO2014102367A1 - A dishwasher comprising a height adjustable lower rack

Info

Publication number: WO2014102367A1
Application number: PCT/EP2013/078116
Authority: WO
Inventors: Lutfu Fatih TOKLUCU; Ersin Donmez; Can INAN; Ahmet Alptekin
Original assignee: Arcelik Anonim Sirketi
Priority date: 2012-12-31
Filing date: 2013-12-30
Publication date: 2014-07-03
Also published as: EP2941171A1

Abstract

The present invention relates to a dishwasher (1) comprising a body (2), a door (4) providing access into the body (2), and a height adjustable lower rack (6) wherein the items to be washed are placed.

Description

A DISHWASHER COMPRISING A HEIGHT ADJUSTABLE LOWER RACK

The present invention relates to a dishwasher comprising a height adjustable lower rack wherein the items to be washed are placed.

A large number of different types of dishwashers are designed in order to meet the different requirements of consumers. Among these designs, for example dishwashers which are suitable for front or top loading and unloading are widely used. The dishwashers most widely used nowadays are the double rack dishwashers that are suitable for front loading and unloading.

The users, before starting the cycle of a double rack dishwasher, generally open the door of the dishwasher entirely, pull the lower rack over the inner surface of the door by hand and place the items to be washed inside the lower rack. Afterwards, the users push the lower rack back into the body. The users repeat the similar processes for the upper rack. One of the difficulties faced by the users in double rack dishwashers is that during the loading and the unloading of the lower rack, the users have to bend over and straighten up several times. The users have physical difficulty and this situation disturbs them.

In order to solve this problem, dishwashers are designed comprising apparatuses providing the adjustment of the height of the lower rack by means of a motor or hand.

In the state of the art European Patent Application No. EP 1 066 789 A1, an device providing the adjustment of the height of the lower rack and a dishwasher wherein this device is used are explained. This device comprises two pairs of levers, upper portions of each of being connected to the lower rack over a guide, middle portions of each being connected to each other over a joint that makes scissors-like movement, and lower portions of each being connected to the wheels rolling on the inner surface of the door and furthermore comprises a driving mechanism that opens and closes the lever arms. However, this device is too complex in terms of structure and can operate only under the influence of high compressive and tensile forces. Furthermore, this device tends to malfunction easily. For instance, the items which are not placed properly during utilization can get caught to the lever arms opening/closing like scissors. Thus, dishwashers wherein the height of the lower rack can be adjusted more easily are needed to be developed.

The aim of the present invention is the realization of a mechanically simple device allowing to easily adjust the height of the lower rack according to the need of the user, that can operate without getting caught and straining the door mechanically in case of improper loading of the lower rack and wherein ease of production, assembly and maintenance is provided, and realization of a dishwasher comprising the said device.

The dishwasher realized in order to attain the aim of the present invention and explicated in the attached claims, comprises a retainer that is connected to the two side walls of the body so as to move both forwards and backwards between a horizontal and a vertical position by rotating in a plane parallel to the side walls of the body, that allows the lower rack both to be pulled over itself through the body and pushed back into the body over itself in the horizontal position thereof, that entirely discharges the operation path of the door in the vertical position thereof and that enables the lower rack to be retained; an elevating mechanism that is embedded on the two side walls of the body and that enables the retainer to be moved both upwards and downwards straightly between a lower position on the inner surface of the door and an upper position having the same projection as the lower position on the inner surface of the door; and a driving mechanism enabling the elevating mechanism both to be triggered and stopped. Thus, it is possible for the user to ergonomically adjust the height of the lower rack.

In the first embodiment of the present invention, the retainer is preferably configured as a U-shaped frame. In the second embodiment of the present invention, the retainer is preferably configured as a fork-shaped frame.

In both the first embodiment and the second embodiment of the present invention, the elevating mechanism is composed of two similar elevators embedded oppositely in the side walls of the body. The retainer is connected to the elevators embedded in the side walls from both sides thereof at the same height. Thus, the load of the lower rack wherein the items to be washed are placed are enabled to be distributed to the two separate elevators in a balanced manner. Additionally, the retainer is also enabled to move upwards and downwards straightly without getting caught. Furthermore, the retainer is connected from both sides thereof in a rotatable manner to a joint each disposed on the elevators and moved upwards or downwards by the driving mechanism in order to provide the retainer to move forwards or backwards by rotating between the horizontal and vertical positions in a plane parallel to the side walls of the body.

In the first and second embodiments of the present invention, the driving mechanism preferably comprises a worm that extends in the vertical direction, that is placed into the channel and whereon the joints are screwed, and a motor providing the rotation of the worm. Thus, the elevator is enabled to move the retainer upwards or downwards straightly between a lower position and an upper position on the inner surface of the door and to stop the retainer in the intermediary positions. In a version of the first and second embodiments of the present invention not shown in the figures, a pneumatic device enabling the joint to be moved is used instead of worm and motor.

In the first and second embodiments of the present invention, the dishwasher comprises a control panel placed on the door or the body and a control unit connected to the control panel, enabling the user to remotely control the driving mechanism directly through the control panel or by wireless communication.

In the first and second embodiments of the present invention, the control unit deactivates the driving mechanism preferably when the upper rack is partially out of the body or when the lower rack is partially inside the body or when the door is not entirely open. Thus, the user is prevented from using the elevating mechanism erroneously.

In the first and second embodiments of the present invention, the control unit preferably enables the driving mechanism to stop the retainer at the intermediary positions between the lower and upper positions. Thus, the users are enabled to elevate the lower rack to a position suitable for their height and to perform loading or unloading at this position.

In the first and second embodiments of the present invention, the control unit preferably enables the driving mechanism to stop the retainer at one of the predetermined intermediary positions between the lower and upper positions. Thus, the users are enabled to select an intermediary position suitable for their height.

In the first and second embodiments of the present invention, the control unit preferably allows the user to program the predetermined intermediary positions. Thus, the users are enabled to record in the memory a position suitable for their height as the intermediary position.

By means of the present invention, a dishwasher is realized which allows the user to easily adjust the height of the lower rack according to his/her own need.

The model embodiments relating to the dishwasher realized in order to attain the aim of the present invention are illustrated in the attached figures, where:

Figure 1 – is the perspective view of the dishwasher in the vertical position of the retainer in the first embodiment of the present invention.

Figure 2 – is the perspective view of the dishwasher in an angular position of the retainer between the horizontal and vertical positions thereof in the first embodiment of the present invention.

Figure 3 – is the perspective view of the dishwasher in the horizontal and lower position of the retainer, when the retainer is detached from the lower rack in the first embodiment of the present invention.

Figure 4 – is the perspective view of the dishwasher in the horizontal and lower position of the retainer, when the retainer holds the lower rack from below in the first embodiment of the present invention.

Figure 5 – is the perspective view of the dishwasher in an intermediary position of the retainer between a lower and an upper position thereof, when the retainer holds the lower rack from below in the first embodiment of the present invention.

Figure 6 – is a perspective view of the retainer, the elevating mechanism and the driving mechanism in the first embodiment of the present invention.

Figure 7 – is a perspective view of the retainer, the elevating mechanism and the driving mechanism in the second embodiment of the present invention.

Figure 8 – is a perspective view of an elevator in the elevating mechanism and the driving mechanism in the first and second embodiments of the present invention.

The elements illustrated in the figures are numbered as follows:

Dishwasher
Body
Side wall
Door
Inner surface
Lower rack
Upper rack
Retainer
Bar
Carrier arm
Separator
Elevating mechanism
Channel
Shaft
Joint
Driving mechanism
Worm
Motor

In all the embodiments of the present invention, the dishwasher (1) comprises a body (2), a door (4) providing access into the body (2), a lower rack (6) and an upper rack (7) wherein the items to be washed are placed (Figure 1).

In all the embodiments of the present invention, the dishwasher (1) furthermore comprises a retainer (8) that is connected to the two side walls (3) of the body (2) so as to move forwards and backwards between a horizontal and a vertical position by rotating in a plane parallel to the side wall (3) of the body (2), that allows the lower rack (6) to be pulled over itself through the body (2) or pushed back into the body (2) over itself in the horizontal position thereof, that does not prevent the movement of the door (4) by being concealed inside the body (2) in the vertical position thereof and that enables the lower rack (6) to be retained; an elevating mechanism (12) that is disposed on the two side walls (3) of the body (2) and that enables the retainer (8) to be moved upwards and downwards straightly between a lower position on the inner surface (5) of the door (4) and an upper position having the same projection as the lower position on the inner surface (5) of the door (4); and a driving mechanism (16) enabling the elevating mechanism (12) to be triggered and stopped (Figures 1 to 7). Thus, the lower rack (6) is allowed to be elevated to the position of the upper rack (7). Thus, the user is enabled to place the items to be washed in the lower rack (6) or to take the washed items out of the lower rack (6) without bending over (Figure 5). Thus, it is possible for the user to ergonomically adjust the height of the lower rack (6).

In all the embodiments of the present invention, the retainer (8) is preferably connected to the elevating mechanism (12) that is disposed on the two side walls (3) of the body (2) so as to move both forwards and backwards between a horizontal and a vertical position by rotating in a plane parallel to the side walls (3) of the body (2) (Figure 1, Figure 2 and Figure 3). The retainer (8) allows the lower rack (6) to be pulled over itself through the body (2) or pushed back into the body (2) over itself in the horizontal position thereof (Figure 3 and Figure 4). The retainer (8) entirely leaves the operation path of the door (4) in the vertical position thereof (Figure 1 and Figure 2). Thus, the user is enabled to close the door (4) in the vertical position of the retainer (8) and to pull the lower rack (6) over the retainer (8) quickly and without difficulty or to push the lower rack (6) into the body (2) over the retainer (8) in the horizontal position of the retainer (8) (Figure 1, Figure 3 and Figure 4). The retainer (8) is connected to the body (2) so as not to touch the inner surface (5) of the door (4) in the horizontal position thereof (Figure 3). Thus, the door (4) is prevented from straining mechanically.

In the first embodiment of the present invention, the retainer (8) is preferably configured as a frame matching with a lower cross-section of the lower rack (6) and that enables the lower rack (6) to be held both from sides and below (Figure 5). Thus, the elevating mechanism (12) is enabled to safely hold the lower rack (6) while elevating or lowering the lower rack (6). In the first embodiment of the present invention, the retainer (8) is preferably configured as a U-shaped frame (Figure 3). Two carrier arms (10) form the sides of the retainer (8) configured as a U-shaped frame. Each of the carrier arms (10) is connected to the elevating mechanism (12) of the body (2) so as to move by rotating in a plane parallel to the side wall (3) of the body (2) between the horizontal and vertical positions. (Figure 1, Figure 2 and Figure 3). A separator (11) joining the two carrier arms (10) forms the front side of the retainer (8) configured as a U-shaped frame (Figure 6). Thus, the retainer (8) is enabled to be light, resistant, simple and easy to be assembled. The retainer (8) configured as a U-shaped frame preferably has a cross-section that fully fits into the opening of a washing chamber of the body (2) (Figure 1). Thus, the retainer (8) is enabled to be optically unnoticeable. Thus, the retainer (8) configured as a U-shaped frame is enabled not to prevent the upper rack (7) from entering or leaving the body (2) in the vertical position thereof (Figure 1). The retainer (8) is enabled to be slightly attached to a protrusion not shown in the figures, disposed inside the body (2) so that the retainer (8) does not fall backwards when brought to the vertical position.

In the first embodiment of the present invention, the separator (11) joining the two carrier arms (10) of the retainer (8) configured as a U-shaped frame is preferably configured as a stopper that limits the forwards movement of the lower rack (6) on the inner surface (5) of the door (4) (Figure 4, Figure 5 and Figure 6). Thus, the user is prevented from pulling the lower rack (6) forwards more than necessary while pulling the lower rack (6) over the retainer (8). Thus, the lower rack (6) is also enabled to be held more safely (Figure 5). The separator (11) can also be placed between the arms (10) so as not to prevent the operation of the upper rack (7) in the vertical position of the retainer (8) such that an H-shaped frame retainer (8) is formed.

In the first embodiment of the present invention, the carrier arms (10) preferably extend parallel to each other (Figure 3). Additionally, the carrier arms (10) have preferably L-shaped cross-sections enabling the lower rack (6) to be grasped both from sides and below (Figure 6). Thus, the retainer (8) is enabled both to be resistant and to safely grasp the lower rack (6). Thus, the frame is prevented from being deformed when the user places heavy items to be washed into the lower rack (6). The retainer (8) is preferably produced from steel material.

In the first embodiment of the present invention, the carrier arms (10) are configured as rails so as to allow more than one wheel, disposed below the side portions of the lower rack (6), to move thereon by rolling (Figure 3 and Figure 4). Thus, the user is enabled to pull the lower rack (6) over the retainer (8) without difficulty.

In the second embodiment of the present invention, the retainer (8) is configured as frame in the form of a fork, enabling the lower rack (6) to be held from below and that matches with a cross-section of the lower rack (6) (Figure 7). Thus, the retainer (8) is enabled to be light, resistant, simple and easy to be assembled. Additionally, the elevating mechanism (12) is thus enabled to safely hold the lower rack (6) while elevating or lowering the lower rack (6). Thus, the retainer (8) is also enabled to be optically unnoticeable by the user. In the second embodiment of the present invention, the retainer (8) comprises a bar (9) connected to the elevating mechanism (12) disposed on the two side walls (3) of the body (2) so as to rotate around its own axis and two pallet-shaped carrier arms (10) fixed on the bar (9), that can move by rotating in a plane parallel to the side walls (3) of the body (2) between the horizontal and vertical positions and that form the two prongs of the fork-shaped retainer (8) (Figure 7). Thus, the user is enabled to close the door (4) in the vertical position of the retainer (8) and to pull the lower rack (6) over the retainer (8) quickly and without difficulty or to push the lower rack (6) back into the body (2) over the retainer (8) in the horizontal position of the retainer (8). The fork-shaped retainer (8) does not touch the inner surface (5) of the door (4). Thus, the door (4) is prevented from straining mechanically. In a version of the second embodiment of the present invention not shown in the figures, the carrier pallet arms (10) are connected onto the axis of the bar (9) so as to fold by rotating in a horizontal plane in the horizontal position of the retainer (8). Thus, the user is enabled to place the carrier arms (10) of the fork-shaped retainer (8) on the bar (9) by folding the carrier arms (10) on the inner surface (5) of the door (4) and also enabled to discharge the operation path of the door (4).

In the first and second embodiments of the present invention, the elevating mechanism (12) preferably comprises two similar elevators (12), each being embedded in one of the two side walls (3) of the body (2) (Figure 1, Figure 6 and Figure 7). Additionally, each of the two sides of the retainer (8) is connected to one of the two elevators (12) embedded on the side walls (3) at the same level (Figure 6 and Figure 7). Thus, the load of the lower rack (6) wherein the items to be washed are placed are enabled to be distributed to the two separate elevators (12) in a balanced manner. Additionally, the retainer (8) is also provided to safely move upwards and downwards, for instance without getting caught.

In the first and second embodiments of the present invention, each elevator (12) preferably comprises a channel (13) extending in the vertical direction and a joint (15) that is situated in the channel (13), that is fastened to the driving mechanism (16) and that can move both upwards and downwards (Figure 6, Figure 7 and Figure 8). Both sides of the retainer (8) are connected onto a joint (15) of one of the elevators (12) in order to provide the retainer (8) to move forwards or backwards by rotating between the horizontal and vertical positions in a plane parallel to the side wall (3) of the body (2) (Figure 6 and Figure 7).

In the first and second embodiments of the present invention, the driving mechanism (16) comprises worms (17), each preferably extending in the vertical direction and placed into the channel (13), and a motor (18) enabling the worm (17) to be driven (Figure 8). The motor (18) is placed just beneath the channel (13). The worm (17) is placed inside the channel (13) so as to rotate around its own axis in the vertical direction (Figure 8). Additionally, the elevator (12) has a screwed joint (15) that is mounted on the worm (17), that is placed inside the channel (13) and that can move upwards or downwards inside the channel (13) (Figure 8). The screwed joint (15) is preferably placed also on a shaft (14) inside the channel (13) (Figure 8). Thus, the elevator (12) is enabled to move the retainer (8) both upwards and downwards straightly between a lower position and an upper position on the inner surface (5) of the door (4) and to safely stop the retainer (8) in the intermediary positions. The step of the worm (17) and the rotational frequency of the motor (18) and the elevating speed interval of the elevator (12) are predetermined by the producer. In the first and second embodiments of the present invention, a separate motor (18) for each elevator (12) is used, being controlled so as to operate synchronically with each other. In a version of the first and second embodiments of the present invention not shown in the figures, a pneumatic device enabling the joint (15) to be moved is used instead of worm (17) and motor (18). In the first embodiment of the present invention, each of the two carrier arms (10) forming the side portions of the frame-shaped retainer (8) is connected to one of the joints (15) disposed on the elevators (12) so as to move between the horizontal and vertical positions by rotating in a plane parallel to the side wall (3) of the body (2) (Figure 2 and Figure 6). In the second embodiment of the present invention, the bar (9) is placed in the joints (15) disposed on the elevator (12) so as to rotate around its own axis (Figure 7). The axis of the bar (9) is perpendicular to the side walls (3) of the body (2). Thus, the fork-shaped retainer (8) is enabled to move by rotating in a plane parallel to the side wall (3) of the body (2) between the horizontal and vertical positions.

In the first and second embodiments of the present invention, the user can remotely control the driving mechanism (16) by wireless communication or directly through the control panel, not shown in the figures, preferably placed on the door (4) or the body (2). For this, the control panel is connected to a control unit not shown in the figures. A remote control is used which can preferably perform infrared communication with the control unit.

In the first and second embodiments of the present invention, the dishwasher (1) comprises a safety unit within the control unit that provides the deactivation of the driving mechanism (16) when the upper rack (7) is not entirely inside the body (2) or when the lower rack (6) is partially inside the body (2) or when the door (4) is not entirely open. Thus, the user is prevented from using the elevating mechanism (12) erroneously. For this, more than one sensor, not shown in the figures, that provides distance measurement is mounted to the body (2), the door (4) and the racks (6, 7). The signals received from the sensors are evaluated by the control unit. As a result of the said evaluation, the control unit enables the driving mechanism (16) to be deactivated or to remain active. Preferably, the user is warned in case of an incorrect operation. The source of the incorrect operation is displayed to the user by means of the lights on the control panel or the remote control. For instance, if the door (4) is not entirely open a first light is enabled to turn on. If the lower rack (6) or the upper rack (7) is at incorrect positions, a second or a third light is enabled to turn on.

In the dishwasher (1) of the present invention, the safety unit is not necessary to be used, however it is preferred. In the dishwasher (1) of the present invention, the adjustment of the height of the lower rack (6) by the user is explained below. After the washing process is over or when the items to be washed are desired to be loaded into the lower rack (6), the user enters the command of “upper position (Ü.K.)” through the control panel or by the remote control in order to elevate the lower rack (6). The driving mechanism (16) automatically starts the elevating process preferably at the end of a predetermined waiting time after the door (4) is entirely opened, after the lower rack (6) is entirely pulled over the retainer (8) by hand and after the upper rack (7) is entirely pushed into the body (2). The dishwasher (1) warns the user by light or sound preferably before starting the elevating process. The user enters the command of “lower position (A.K.)” through the control panel or by the remote control in order to lower the lower rack (6) through the control panel after unloading or loading the lower rack (6). If the door (4) is entirely open and the racks (6, 7) are at the right positions, the driving mechanism (16) starts the lowering process at the end of a predetermined waiting time. The dishwasher (1) warns the user by light or sound preferably before starting the lowering process. When the lower rack (6) comes to the lower position, the user pushes the lower rack (6) into the body (2) by hand and closes the door (4) by bringing the retainer (8) to the vertical position again by hand.

In the first and second embodiments of the present invention, the control unit controls the driving mechanism (16) preferably so as to stop the retainer (8) at the intermediary positions between the lower and upper positions. Thus, the users are enabled to elevate the lower rack (6) to a position suitable for their height and to perform loading or unloading at this position. After the washing process is over or when the items to be washed are desired to be loaded into the lower rack (6), the user opens the door (4) entirely, pulls the lower rack (6) over the retainer (8) and enables the upper rack (7) to be inside the body (2). Afterwards, the user enters the preferably arrow-shaped command of “up (Y.)” through the control panel or by the remote control by pressing continuously in order to elevate the lower rack (6). The driving mechanism (16) continues the elevating process during the pressing. When the user stops pressing, the lower rack (6) is stopped. If the user desires to slightly lower the lower rack (6), he/she again enters the preferably arrow-shaped command of “down (A.)” through the control panel or by the remote control by pressing continuously. The driving mechanism (16) continues the lowering process during the pressing. The user enters the command of “lower position (A.K.)” through the control panel or by the remote control in order to lower the lower rack (6) after unloading or loading the lower rack (6). If the door (4) is entirely open and the racks (6, 7) are at the right positions, the driving mechanism (16) automatically starts the lowering process at the end of a predetermined waiting time. The dishwasher (1) warns the user by light or sound preferably before starting the lowering process. When the lower rack (6) comes to the lower position, the user pushes the lower rack (6) into the body (2) by hand and closes the door (4) by bringing the retainer (8) to the vertical position again by hand.

In the first and second embodiments of the present invention, the control unit controls the driving mechanism (16) preferably so as to stop the retainer (8) at one of the predetermined intermediary positions between the lower and upper positions. Thus, the users are enabled to select an intermediary position most suitable for their height. At least one intermediary position is preferred to be provided in the dishwasher (1) of the present invention. After the washing process is over or when the items to be washed are desired to be loaded into the lower rack (6), the user enters the command of “intermediary position (Ar.K.)” through the control panel or by the remote control in order to elevate the lower rack (6). If the door (4) is entirely open and the racks (6, 7) are at the right positions, the driving mechanism (16) starts the elevating process at the end of a predetermined waiting time. The dishwasher (1) warns the user by light or sound preferably before starting the elevating process. The user enters the command of “lower position (A.K.)” through the control panel or by the remote control in order to lower the lower rack (6) after unloading or loading the lower rack (6). If the door (4) is entirely open and the racks (6, 7) are at the right positions, the driving mechanism (16) automatically starts the lowering process at the end of a predetermined waiting time. The dishwasher (1) warns the user by light or sound preferably before starting the lowering process. When the lower rack (6) comes to the lower position, the user pushes the lower rack (6) into the body (2) by hand and closes the door (4) by bringing the retainer (8) to the vertical position again by hand.

In the first and second embodiments of the present invention, the control unit allows the user to program the intermediary positions. Thus, the users are enabled to record in the memory a position most suitable for their height as the intermediary position. The user opens the door (4) entirely, pulls the lower rack (6) over the retainer (8) and enters the preferably arrow-shaped command of “up (Y.)” through the control panel or by the remote control by pressing continuously. The driving mechanism (16) continues the elevating process during the pressing. When the user stops pressing, the lower rack (6) is stopped. If the user desires to slightly lower the lower rack (6), he/she again enters the preferably arrow-shaped command of “low (A.)” through the control panel or by the remote control by pressing continuously. The driving mechanism (16) continues the lowering process during the pressing. When the user stops pressing, the lower rack (6) is stopped. In order to record this position in the memory, the user enters the command of “record in the memory (H.A.)” and then immediately presses the preferred button of “intermediary position (Ar.K.)” and records this position in the memory as the new “intermediary position (Ar.K.)”. Since there can be more than one user with different physical features in a family, having more than one programmable intermediary position makes the dishwasher (1) more ergonomic. Therefore, preferably three programmable intermediary positions are provided in the remote control of the dishwasher (1) of the present invention.

By means of the present invention, an ergonomic, light, optically unnoticeable and mechanically simple device allowing to easily adjust the height of the lower rack (6) according to the need of the user, that can operate without getting caught and straining the door (4) mechanically in case of improper loading of the lower rack (6) and wherein ease of production, assembly and maintenance is provided and erroneous use is prevented, and a dishwasher (1) comprising this device are realized

Claims

A dishwasher (1) comprising

a body (2),

a door (4) that provides access into the body (2),

a lower rack (6) and an upper rack (7) wherein the items to be washed are placed,

characterized by

a retainer (8) that is connected to the two side walls (3) of the body (2) so as to move both forwards and backwards between a horizontal and a vertical position by rotating in a plane parallel to the side walls (3) of the body (2), that allows the lower rack (6) both to be pulled over itself through the body (2) and pushed back into the body (2) over itself in the horizontal position thereof, that does not prevent the movement of the door (4) by being concealed inside the body (2) in the vertical position thereof and that enables the lower rack (6) to be retained,

an elevating mechanism (12) that is disposed on the two side walls (3) of the body (2) and that enables the retainer (8) to be moved both upwards and downwards straightly between a lower position on the inner surface (5) of the door (4) and an upper position having the same projection as the lower position on the inner surface (5) of the door (4) and

a driving mechanism (16) enabling the elevating mechanism (12) both to be triggered and stopped.
A dishwasher (1) as in Claim 1, characterized by the two carrier arms (10) and the retainer (8) configured as a U-shaped frame, formed by a separator (11) joining the carrier arms (10).
A dishwasher (1) as in Claim 2, characterized by the stopper-shaped separator (11) that limit the forwards movement of the lower rack (6) on the inner surface (5) of the door (4).
A dishwasher (1) as in Claim 2 or 3, characterized by the carrier arms (10) with an L-shaped cross-section, enabling the lower rack (6) to be grasped both from sides and below.
A dishwasher (1) as in any one of the Claims 2 to 4, characterized by the rail-shaped carrier arms (10) enabling more than one wheel disposed below the side portions of the lower rack (6) to move thereon by rolling.
A dishwasher (1) as in Claim 1, characterized by a bar (9) that is connected to the elevating mechanism (12) embedded in the two side walls (3) of the body (2) so as rotate around its own axis and by the fork-shaped retainer (8) formed by two pallet-shaped carrier arms (10) fixed on the bar (9).
A dishwasher (1) as in any one of the above claims, characterized by the elevating mechanism (12) each comprising a channel (13) embedded in one side wall (3) of the body (2) and extending in the vertical direction and a joint (15) placed into each channel (13) and moved both upwards and downwards by the driving mechanism (16) and by the retainer (8) connected to the joints (15) so as to move both forwards and backwards between a horizontal and a vertical position by rotating in a plane parallel to the side walls (3) of the body (2).
A dishwasher (1) as in Claim 7, characterized by the driving mechanism (16) comprising a worm (17) placed into each channel (13) and extending in the vertical direction and at least one motor (18) enabling the worms (17) to be driven and by the screw joint (15) mounted on the worm (17).
A dishwasher (1) as in any one of the above claims, characterized by a control panel placed on the door (4) or the body (2) and a control unit that enables the driving mechanism (16) to be remotely controlled directly through the control panel or by wireless communication.
A dishwasher (1) as in Claim 9, characterized by the control unit that provides the deactivation of the driving mechanism (16) when the upper rack (7) is partially out of the body (2) or when the lower rack (6) is partially inside the body (2) or when the door (4) is not entirely open.
A dishwasher (1) as in Claim 9 or 10, characterized by the control unit that stops the retainer (8) at the intermediary positions between the lower and upper positions by means of the driving mechanism (16).
A dishwasher (1) as in Claim 9 or 10, characterized by the control unit that stops the retainer (8) at one of the predetermined intermediary positions between the lower and upper positions by means of the driving mechanism (16).
A dishwasher (1) as in Claim 12, characterized by the control unit that enables the predetermined intermediary positions to be programmed by the user.