DE102014214169A1 - Telescopic extension system and household cooker - Google Patents

Abstract

The invention relates to a telescopic extension system (13) for a household cooking appliance (1), with at least two rails (14-16) displaceable between a retracted and an extended state of the telescopic extension system (13) and a latching device (17) which is adapted to at least two rails (14-16) in the extended state to lock together, wherein the latching means (17) for locking a spring means (24) which is relaxed in the retracted state.

Description

The present invention relates to a telescopic extension system and a Haushaltsgargerät.

For Haushaltsgargeräte such as ovens, there are so-called telescopic extension systems, which allow the user to draw accessories such as baking sheets significantly further out of the oven than would be possible with normal Einhängegittern. So that the telescopic extension system can not slip undefined in the extended state when placing the accessories, it is possible to lock rails of the telescopic extension system in the extended state with each other.

The DE 10 2008 035 078 A1 describes such a telescopic extension system for a Haushaltsgargerät with an inner track, a middle track and an outer track. At the middle track rail, a latching device is provided which is adapted to lock the inner track rail and the outer track rail with the middle track rail. The Verrasteinrichtung has a locking lever with a spring device which biases the Verrasthebel so that it automatically locks the rails when you pull the telescopic extension system. In the retracted state of the telescopic extension system, the spring device is biased.

Against this background, an object of the present invention is to provide an improved telescopic extension system.

Accordingly, a telescopic extension system for a Haushaltsgargerät with at least two displaceable between a retracted and an extended state of the telescopic extension system rails and a Verrasteinrichtung is proposed. The latching device is set up to lock the at least two slide rails together in the extended state, wherein the latching device for latching has a spring device which is relaxed in the retracted state.

Characterized in that the spring device is relaxed in the retracted state, no material relaxation of the material of the spring device takes place even at elevated temperatures, in particular in the pyrolysis of the Haushaltsgargeräts at temperatures of, for example, over 450 ° C. As a result, the functionality of the Verrasteinrichtung is permanently ensured even at high temperatures. The rails can also be referred to as guide rails. By "relaxed" in the present case is to be understood that the spring device can be subjected to completely stress-free or even with a low residual stress. The residual stress is preferably only so great that no material relaxation takes place even at elevated temperatures (for example greater than 450 ° C.).

According to one embodiment, the telescopic extension system has an inner track, a middle track, an outer track and the latch mounted on the middle track, the middle track and the outer track for moving the telescoping system from the retracted state to the extended state, or vice versa are displaceable to the inner track, wherein the Verrasteinrichtung is adapted to lock the inner track, the middle track and the outer track rail in the extended state with each other, wherein the spring means is biased such that the Verrasteinrichtung the inner track, the middle track and the outer running rail automatically locks together when the telescopic extension system is moved from the retracted state to the extended state, and wherein the spring device is relaxed in the retracted state.

The rails may have a C-shaped cross-section. Rollers can be provided between the rails. The inner track is preferably fixed, with the middle track and the outer track being movable relative to the inner track. The telescopic extension system can be attached to an accessory carrier of the cooking appliance. The accessory carrier may be a mountable on or in a cooking chamber of Haushaltsgargeräts hanging rack or side rails.

According to a further embodiment, the inner running rail can be fastened to or in a cooking chamber of the household cooking appliance.

Preferably, a telescopic extension system is provided on or in the cooking chamber on two mutually opposite side walls. The telescopic extension systems are preferably removed without tools from the oven. As a result, the telescopic extension systems for cleaning can be easily and quickly removed from the oven and cleaned, for example, in a dishwasher. The telescopic extension system can be fastened directly or indirectly with the aid of accessory carriers on or in the cooking chamber.

According to a further embodiment, the latching device has a latching lever rotatably mounted on the middle running rail.

The locking lever is preferably rod-shaped or rod-shaped. The locking lever may have a rectangular cross-section. The locking lever is rotatably mounted, for example by means of a rivet or a screw on the middle rail.

According to a further embodiment, the locking lever is in the extended state at the same time on end faces of the inner track rail and the outer track rail.

Preferably, each stop body is provided at end portions of the latching lever. The stopper members may be rollers rotatably arranged at the end portions. For displacing the telescopic extension system from the extended state to the retracted state, a force acting in the direction of the cooking chamber is exerted on the outer running rail, whereby the stopper bodies roll on the end faces of the rails in such a way that the detent lever is rotated against the spring force of the spring device into a horizontal position so that it is between the inner track and the outer track.

According to a further embodiment, the latching lever is rotatable by means of the spring device from an unlocked state into a locked state, wherein the spring device is biased in the unlocked state and wherein the spring device is relaxed in the locked state.

In the locked state, the Verrasteinrichtung is adapted to lock the rails together. In the unlocked state, the locking lever is preferably positioned horizontally or arranged parallel to the rails.

According to a further embodiment, in each case a recess is provided on the inner running rail and / or on the outer running rail, so that the locking lever is rotatable in the inserted state of the telescopic extension system in its locked state.

Alternatively, the locking lever outside the rails, that can not be arranged between the inner rail and the outer rail. For this purpose, attachments may be provided on the rails, which are arranged so that the locking lever rotates to lock the telescopic extension system outside of the rails against these attachments.

According to a further embodiment, the Verrasteinrichtung is adapted to automatically lock the inner track, the outer track and the middle track rail in the retracted state of the telescopic extension system with each other.

As a result, a stop in the retracted state of the telescopic extension system is possible. This represents a handling advantage, since the rails in the inserted state can not move relative to each other.

According to a further embodiment, the latching device is arranged in the inserted state between the inner running rail and the outer running rail.

This results in a compact design of the telescopic extension system.

According to a further embodiment, the spring device is a torsion spring.

The torsion spring is preferably made of a bent spring steel section.

Furthermore, a Haushaltsgargerät proposed with such a telescopic extension system.

The Haushaltsgargerät is in particular an oven, a microwave oven, a steamer or oven with microwave function.

Further possible implementations of the telescopic extension system and / or of the household cooking appliance also include combinations of features or embodiments described above or below with regard to the exemplary embodiments which are not explicitly mentioned. The skilled person will also add individual aspects as improvements or additions to the respective basic form of the telescopic extension system and / or the Haushaltsgargeräts.

Further advantageous embodiments and aspects of the telescopic extension system and / or the Haushaltsgargeräts are the subject of the dependent claims and the embodiments described below of the telescopic extension system and / or Haushaltsgargeräts. Furthermore, the telescopic extension system and / or the Haushaltsgargerät are explained in more detail by means of preferred embodiments with reference to the accompanying figures.

1 shows a schematic perspective view of an embodiment of a Haushaltsgargeräts;

2 shows a schematic side view of an embodiment of a telescopic extension system for the Haushaltsgargerät according to the 1 ;

3 shows a schematic perspective view of the telescopic extension system according to the 2 ; and

4 shows a further schematic side view of the telescopic extension system according to the 2 ,

In the figures, the same or functionally identical elements have been given the same reference numerals, unless stated otherwise.

The 1 shows a schematic perspective view of a Haushaltsgargeräts 1 , The household cooking appliance 1 For example, is an oven, a microwave oven, a microwave oven or the like. The household cooking appliance 1 has a muffle or a cooking chamber 2 up, through a door 3 is closable. The cooking space 2 can inside a housing of the Haushaltsgargeräts 1 be arranged. The door 3 is in the 1 shown in their closed position. By pivoting around one at a lower end of the door 3 provided pivot axis can the door 3 closed or opened. Alternatively, the door 3 on the side of the oven 2 be struck. Furthermore, the door can 3 at one of the oven 2 be arranged pull-out baking cart. At an upper section of the door 3 can a handle 4 be provided.

The cooking space 2 has a floor 5 one to the ground 5 opposite arranged ceiling 6 , one of the door 3 opposite rear wall 7 and two side walls arranged opposite each other 8th . 9 on. The cooking space 2 is preferably cuboid or cube-shaped. The cooking space 2 can be made of a metal material, in particular of a steel sheet.

The 2 shows an accessory carrier 10 for the cooking space 2 of the household cooking appliance 1 , The accessory carrier 10 may be a so-called Einhängegestell or side rails of Haushaltsgargeräts 1 be. In particular, on every sidewall 8th . 9 of the cooking chamber 2 such an accessory carrier 10 arranged. The accessory carrier 10 can from the oven 2 be removable. The accessory carrier 10 has horizontally extending struts 11 and vertical struts 12 on. In the 2 is only one of the struts 11 . 12 provided with a reference numeral.

On the accessory carrier 10 is a telescopic extension system 13 attached. The telescopic extension system 13 Can be detachably attached to the accessory carrier 10 be attached. The 3 shows the telescopic extension system 13 in a perspective view. The telescopic extension system 13 has an inner track 14 , a middle track 15 and an outer track 16 on. The rails 14 to 16 can also be referred to as guide rails. The middle track 15 is between the inner track 14 and the outer track 16 positioned. The inner track 14 is preferably on the accessory carrier 10 attached. The rails 15 . 16 are relative to the inner track 14 displaceable. This can be done on the rails 14 to 16 not shown rolls may be provided. The inner track 14 is either with the help of the accessory carrier 10 or directly on or in the cooking chamber 2 of the household appliance 1 fixable.

The telescopic extension system 13 has one on the middle track 15 attached latching device 17 on. The latching device 17 has a rotatable on the middle track rail 15 arranged locking lever 18 on. The locking lever 18 is about a rotation axis 19 rotatable. The telescopic extension system 13 is from one in the 2 shown retracted state in one in the 3 shown extended state can be brought. Conversely, the telescopic extension system 13 from that in the 3 shown extended state in the in the 2 retracted state be moved. To spend the telescopic extension system 13 from the retracted state to the extended state or vice versa are the middle track 15 and the outer track 16 relative to the stationary inner track 14 displaceable.

The latching device 17 is set to the inner track 14 , the middle track 15 and the outer track 16 in the extended state of the telescopic extension system 13 to lock together. At end sections of the locking lever 18 are each stop body 20 . 21 intended. The stopper body 20 . 21 are roller-shaped and are preferably rotatable at the end portions of the latch lever 18 stored. In the extended state of the telescopic extension system 13 is the locking lever 18 or are the stop body 20 . 21 at the same time on front sides 22 . 23 the inner track 14 and the outer track 16 at.

The latching device 17 also has a spring device 24 on. The spring device 24 is in particular a torsion spring. The spring device 24 is biased such that the Verrasteinrichtung 17 the inner track 14 , the middle track 15 and the outer track 16 when moving the telescopic extension system 13 from the retracted state in the extended state automatically locked together. The spring device 24 is both in the retracted state and in the extended state of the telescopic extension system 13 relaxed. In that the spring device 24 is relaxed in the retracted state loses the spring means 24 even at elevated temperatures, especially in the pyrolysis operation of Haushaltsgargeräts 1 , not their spring action. In particular, no material relaxation takes place even at elevated temperatures.

The locking lever 18 is with the help of the spring device 24 from one in the 2 shown unlocked state in a in the 3 shown locked state rotatable. In the unlocked state is the spring device 24 biased. In the locked state is the spring device 24 relaxed.

To spend the telescopic extension system 13 from that in the 3 shown extended state in the in the 2 shown inserted state is on the outer track 16 one in the direction of displacement of the rails 15 . 16 oriented force applied. As a result, the stopper slide 20 . 21 of the latching lever 18 on the front sides 22 . 23 the rails 14 . 16 off, leaving the locking lever 18 between the inner track 14 and the outer track 16 is relocated.

As the 4 shows is on the inner track 14 and / or on the outer track rail 16 one recess each 25 . 26 provided so that the locking lever 18 also in the retracted state of the telescopic extension system 13 is rotatable in its locked state. Alternatively, on the rails 14 . 16 Attachments may be provided which are arranged such that the locking lever 18 outside the rails 14 . 16 turns against these attachments. Because of the recesses 25 . 26 are provided, the Verrasteinrichtung 17 to set up the inner track 14 , the outer track rail 16 and the middle track 15 also in the retracted state of the telescopic extension system 13 automatically lock together.

Although the present invention has been described with reference to embodiments, it is variously modifiable.

LIST OF REFERENCE NUMBERS

1

 Haushaltsgargerät

2

 oven

3

 door

4

 Handle

5

 ground

6

 blanket

7

 rear wall

8th

 Side wall

9

 Side wall

10

 Accessories support

11

 strut

12

 strut

13

 Telescopic extension system

14

 runner

15

 runner

16

 runner

17

 latching device

18

 Verrasthebel

19

 axis of rotation

20

 stop body

21

 stop body

22

 front

23

 front

24

 spring means

25

 recess

26

 recess

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102008035078 A1 [0003]

Claims (11)

Telescopic extension system ( 13 ) for a household cooking appliance ( 1 ), with at least two between a retracted and an extended state of the telescopic extension system ( 13 ) movable rails ( 14 - 16 ) and a latching device ( 17 ), which is adapted to the at least two rails ( 14 - 16 ) in the extended state with each other, wherein the Verrasteinrichtung ( 17 ) for latching a spring device ( 24 ), which is relaxed in the retracted state. Telescopic extension system according to claim 1, characterized by an inner running rail ( 14 ), a middle track ( 15 ), an outer track ( 16 ) and the middle rail ( 15 ) attached latching device ( 17 ), wherein the middle track ( 15 ) and the outer track ( 16 ) for bringing the telescopic extension system ( 13 ) from the retracted state to the extended state or vice versa relative to the inner track rail (FIG. 14 ) are displaceable, wherein the Verrasteinrichtung ( 17 ) is adapted to the inner track ( 14 ), the middle track ( 15 ) and the outer track ( 16 ) in the extended state with each other, wherein the spring device ( 24 ) is biased such that the Verrasteinrichtung ( 17 ) the inner track ( 14 ), the middle track ( 15 ) and the outer track ( 16 ) when moving the telescopic extension system ( 13 ) automatically latched together from the retracted state to the extended state and wherein the spring device ( 24 ) is relaxed in the retracted state. Telescopic extension system according to claim 2, characterized in that the inner track ( 14 ) on or in a cooking chamber ( 2 ) of the household cooking appliance ( 1 ) is attachable. Telescopic extension system according to claim 2 or 3, characterized in that the latching device ( 17 ) a rotatable on the middle track ( 15 ) mounted locking lever ( 18 ) having. Telescopic extension system according to claim 4, characterized in that the locking lever ( 18 ) in the extended state at the same time on end faces ( 22 . 23 ) of the inner track ( 14 ) and the outer track ( 16 ) is present. Telescopic extension system according to claim 4 or 5, characterized in that the locking lever ( 18 ) by means of the spring device ( 24 ) is rotatable from an unlocked state into a locked state, wherein the spring device ( 24 ) is biased in the unlocked state and wherein the spring means ( 24 ) is relaxed in the locked state. Telescopic extension system according to claim 6, characterized in that on the inner track ( 14 ) and / or on the outer track ( 16 ) each have a recess ( 25 . 26 ) is provided, so that the locking lever ( 18 ) in the retracted state of the telescopic extension system ( 13 ) is rotatable in its locked state. Telescopic extension system according to claim 7, characterized in that the latching device ( 17 ) is adapted to the inner track ( 14 ), the middle track ( 15 ) and the outer track ( 16 ) in the retracted state of the telescopic extension system ( 13 ) automatically lock together. Telescopic extension system according to one of claims 2-8, characterized in that the latching device ( 17 ) in the inserted state between the inner track ( 14 ) and the outer track ( 16 ) is arranged. Telescopic extension system according to one of claims 1-9, characterized in that the spring device ( 24 ) is a torsion spring. Household cooking appliance ( 1 ) with a telescopic extension system ( 13 ) according to any one of claims 1-10.

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