WO2009121677A2 - Retraction guide and baking oven - Google Patents
Retraction guide and baking oven Download PDFInfo
- Publication number
- WO2009121677A2 WO2009121677A2 PCT/EP2009/052519 EP2009052519W WO2009121677A2 WO 2009121677 A2 WO2009121677 A2 WO 2009121677A2 EP 2009052519 W EP2009052519 W EP 2009052519W WO 2009121677 A2 WO2009121677 A2 WO 2009121677A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rolling elements
- pull
- rail
- rolling
- cage
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/16—Shelves, racks or trays inside ovens; Supports therefor
- F24C15/168—Shelves, racks or trays inside ovens; Supports therefor with telescopic rail systems
Definitions
- the present invention relates to a pull-out guide, in particular for an oven, with a first rail, which can be fixed to a wall, and a movable second rail, which is held on a plurality of rolling elements on the first rail, and an oven.
- DE 102 40 146 discloses an oven, in which on opposite sides in each case a stationary guide rail, on which a rail-shaped carriage is movably held. Between the carriage and the guide rail a plurality of rolling elements are provided.
- the rolling pairings may consist of ceramic or have a ceramic coating.
- the rolling elements are relatively expensive and for household appliances only in the upper price segment feasible.
- the rolling elements are not produced by a ceramic, there is the problem that dirt can cause damage to the rolling elements and the surrounding rails.
- the pull-out guide comprises a plurality of rolling elements, wherein at least one of the rolling elements consists of a material which has a greater hardness and rigidity than the material of the other rolling elements. This makes it possible to carry out a dirt removal with the harder rolling elements, especially if dirt on the raceways of
- Rails are arranged. Because of the harder and stiffer rolling elements, these contaminants can be crushed and the other rolling elements can not be damaged by these contaminants and therefore have better running properties. This improves the life of a pull-out guide even in extreme conditions.
- At least one hard rolling element is made of a ceramic.
- the ceramic materials have such high hardness and rigidity that they can easily grind solidified contaminants.
- the other rolling elements are made of any material.
- the rolling elements are guided in a cage between the first and the second rail and in the direction of forwardmost rolling elements is made of the material with greater hardness and rigidity.
- the first rolling element-if a contamination is arranged on the tread-the dirt removal perform and grind the dirt.
- the following rolling elements then encounter the already cleaned tread below and can not be damaged by the previously existing pollution and obstructed when rolling.
- a plurality of rolling elements are guided on a cage, wherein the respective outermost rolling elements on opposite sides of the cage made of the material with greater hardness and rigidity.
- the cage with the rolling elements can be moved in opposite directions, wherein in each case the foremost rolling element consists of the material of greater hardness and rigidity.
- a plurality of rolling elements may be provided from the same material in a plane perpendicular to the longitudinal axis of the rails. This allows the rail to absorb loads in different directions.
- the rolling elements may preferably be formed as balls.
- the rails of the pull-out guide are preferably made of a bent metal sheet. As a result, existing systems of pull-out guides can be used.
- the pull-out guide can also have a third movable rail, so that a method of a rail is also completely possible in front of an oven.
- a rolling element unit according to the invention can be arranged both between the first and the second rail and between the second and the third rail.
- an oven in which a pull-out guide according to the invention is present.
- one or more extension guides are mounted on opposite side walls of the oven.
- Figure 1 is a perspective view of a pull-out guide according to the invention.
- Figure 2 is a perspective view of the pull-out of Figure 1, partially in section;
- Figure 3 is a sectional detail view of the pull-out of Figure 1, and
- FIG. 4 is a cross-sectional view of the pull-out guide of FIG. 1.
- a pull-out guide 1 comprises a first rail 2, which can be mounted on a side wall of a baking oven and for this purpose has openings 3, on which fastening means can be mounted.
- a second rail 4 is provided. kept mobile.
- a rear end stop 5 and a front plate 6 is provided, so that for example an article, such as a baking sheet or a grid, can be placed on the second rail 4.
- a cage 7 is provided on which a plurality of rolling elements 9 and 10 are guided.
- the cage 7 can be made of a bent metal sheet, which surrounds an inner portion 11 of the rail 2 with treads 13.
- a plurality of recesses 8 are provided, in each of which a rolling element 9, 10 is arranged.
- the cage 7 has at the recesses 8 bent tabs 12, so that the spherical rolling elements 9 and 10 do not abut sharp edges, which could cause squeaking noises.
- the rolling elements are arranged on the cage 7 such that the black drawn rolling elements 10 are made of a material having a greater hardness and rigidity than the white rolling elements 9.
- the harder rolling elements 10 may for example consist of a ceramic material, it being possible to use sintered hard metals, silicon nitrite, sialons, silicon carbide and / or aluminum oxide. Furthermore, cermets can also be used. Such technical ceramics preferably have one
- Wickers hardness which is greater than 12 GPa, preferably greater than 13 GPa at a load of 5 kg.
- the modulus of elasticity of such rolling elements of a hard and rigid material is preferably higher than 260 GPa, in particular higher than 280
- the central rolling elements 9 may be made of steel.
- FIG. 4 shows a cross section through the pull-out guide 1, wherein it can be seen that in each case 3 spherical rolling elements 9 and 10 are provided in a plane perpendicular to the longitudinal axis of the rails 2 and 4. Each rolling element 9 runs on a running surface 13 at an inner bent portion 11 of the rail 2. Furthermore, the movable rail 4 has outer raceways 14 on which run the spherical rolling elements 9 and 10 respectively.
- the running surfaces 13 and 14 of the rolling elements 9 and 10 are arranged largely protected, since the rail 4, the inner portion 11 surrounds a U-shaped and has an inwardly bent legs. However, a hermetic seal of the treads is not given, so that it may be possible when used in an oven that still dirt can reach the treads 13 and 14. Since in the cage 7 the outermost rolling elements 10 are made of a material of greater hardness, such contamination can be ground by the hard rolling elements, so that the subsequent softer rolling elements 9 made of steel are no longer damaged by the contamination and the running properties of Rolling elements 9 can not be adversely affected.
- each spherical rolling elements are present in a plane perpendicular to the rail. It is of course also possible to provide a pull-out in which only one or two or even more than three balls are provided in a plane perpendicular to the longitudinal axis.
- the shape of the rolling elements 9 and 10 can also be modified, for example, these can be designed as cylinders, tons, etc.
- the rolling element 10 made of a harder material can also be provided only on one side of the cage 7, so that the remaining rolling elements are made of the less expensive material, such as steel.
- the movable rail 4 is in a retracted position, so that any dirt settle on only one side of the travel path of the cage 7. Then it is sufficient if the rolling elements 10 are formed on the facing to the plate 6 side of the harder material.
- On the cage 7 can also be provided to remove dirt on a plow blade that slides over the rails 2 and 4 and thereby can strip off dirt.
- the embodiment shown is mounted in particular in an oven on opposite side walls. Because especially in ovens with recirculation mode extreme conditions can occur that lead to contamination on the running surfaces 13 and 14 of the rails 2 and 4.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Bearings For Parts Moving Linearly (AREA)
- Rolling Contact Bearings (AREA)
- Cleaning In General (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112009000746T DE112009000746A5 (en) | 2008-04-04 | 2009-03-03 | Pull-out guide and oven |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202008004658.0 | 2008-04-04 | ||
DE200820004658 DE202008004658U1 (en) | 2008-04-04 | 2008-04-04 | Pull-out guide and oven |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2009121677A2 true WO2009121677A2 (en) | 2009-10-08 |
WO2009121677A3 WO2009121677A3 (en) | 2010-05-14 |
Family
ID=40953377
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2009/052519 WO2009121677A2 (en) | 2008-04-04 | 2009-03-03 | Retraction guide and baking oven |
Country Status (2)
Country | Link |
---|---|
DE (2) | DE202008004658U1 (en) |
WO (1) | WO2009121677A2 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012106751A1 (en) * | 2012-07-25 | 2014-01-30 | Paul Hettich Gmbh & Co. Kg | Pull-out guide for relatively movable furniture parts |
DE102014206591A1 (en) * | 2014-04-04 | 2015-10-08 | BSH Hausgeräte GmbH | Rail extension device for receiving a food support, device with a rail extension device and cooking appliance |
DE102017107954A1 (en) * | 2017-04-12 | 2018-10-18 | Accuride International Gmbh | telescopic rail |
DE102021119672A1 (en) | 2021-07-28 | 2023-02-02 | Paul Hettich Gmbh & Co. Kg | Drawer slide and method of making a drawer slide |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5417496A (en) * | 1994-03-01 | 1995-05-23 | General Devices Co., Inc. | Ball bearing retainer for telescoping slide assembly |
DE19949239A1 (en) * | 1999-10-13 | 2001-04-26 | Aeg Hausgeraete Gmbh | Extraction device for at least one cooking item bearer in cooker oven has bearings for rails with bearing balls or rollers consisting of self-lubricating material, at least one their surfaces |
WO2004025186A1 (en) * | 2002-09-09 | 2004-03-25 | BSH Bosch und Siemens Hausgeräte GmbH | Rail or telescopic extension |
US7087862B1 (en) * | 2005-03-16 | 2006-08-08 | General Electric Company | Methods and apparatus for assembling cooking appliances |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2656822A1 (en) * | 1976-12-15 | 1978-06-22 | Markus Spoetzl | Roller or ball bearings - are of elastomeric material with intermediate smaller harder roller or ball to eliminate play |
DE10240146A1 (en) | 2002-08-30 | 2004-03-11 | BSH Bosch und Siemens Hausgeräte GmbH | Oven for baking with linear pull-out has holder part with two holding elements on opposite side walls |
DE10248512B4 (en) | 2002-10-17 | 2007-03-01 | Electrolux Home Products Corporation N.V. | Dish receiving and transport device and dishwasher |
DE10359962B4 (en) * | 2003-12-18 | 2005-12-29 | Nacam Deutschland Gmbh | Bearing device for motor vehicle steering shafts |
DE102004061889A1 (en) * | 2004-12-22 | 2006-07-06 | BSH Bosch und Siemens Hausgeräte GmbH | Pull-out device for cooking appliances has rolling body carrier and disk-shaped rolling body with side rail and one running range for rolling body whereby in running range lateral guide is arranged for the rolling body |
-
2008
- 2008-04-04 DE DE200820004658 patent/DE202008004658U1/en not_active Expired - Lifetime
-
2009
- 2009-03-03 WO PCT/EP2009/052519 patent/WO2009121677A2/en active Application Filing
- 2009-03-03 DE DE112009000746T patent/DE112009000746A5/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5417496A (en) * | 1994-03-01 | 1995-05-23 | General Devices Co., Inc. | Ball bearing retainer for telescoping slide assembly |
DE19949239A1 (en) * | 1999-10-13 | 2001-04-26 | Aeg Hausgeraete Gmbh | Extraction device for at least one cooking item bearer in cooker oven has bearings for rails with bearing balls or rollers consisting of self-lubricating material, at least one their surfaces |
WO2004025186A1 (en) * | 2002-09-09 | 2004-03-25 | BSH Bosch und Siemens Hausgeräte GmbH | Rail or telescopic extension |
US7087862B1 (en) * | 2005-03-16 | 2006-08-08 | General Electric Company | Methods and apparatus for assembling cooking appliances |
Also Published As
Publication number | Publication date |
---|---|
WO2009121677A3 (en) | 2010-05-14 |
DE202008004658U1 (en) | 2009-08-13 |
DE112009000746A5 (en) | 2011-03-10 |
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