U.S. patent application number 10/872885 was filed with the patent office on 2004-12-30 for extraction system for a domestic appliance, especially a cooking device.
This patent application is currently assigned to BSH Bosch und Siemens Hausgerate GmbH. Invention is credited to Erdmann, Klaus, Wiedenmann, Reinhard.
Application Number | 20040261785 10/872885 |
Document ID | / |
Family ID | 7710161 |
Filed Date | 2004-12-30 |
United States Patent
Application |
20040261785 |
Kind Code |
A1 |
Wiedenmann, Reinhard ; et
al. |
December 30, 2004 |
Extraction system for a domestic appliance, especially a cooking
device
Abstract
An extraction system for domestic appliances, especially cooking
devices, containing an item holder, at least one fixed support unit
and at least one mobile support unit. The mobile support unit
guided on the fixed support unit and having at least one bearing
surface to enhance the extraction of the item holder.
Inventors: |
Wiedenmann, Reinhard;
(Weingarten, DE) ; Erdmann, Klaus; (New Bern,
NC) |
Correspondence
Address: |
JOHN T. WINBURN
100 BOSCH BOULEVARD
NEW BERN
NC
28562
US
|
Assignee: |
BSH Bosch und Siemens Hausgerate
GmbH
Munich
DE
|
Family ID: |
7710161 |
Appl. No.: |
10/872885 |
Filed: |
June 21, 2004 |
Current U.S.
Class: |
126/339 |
Current CPC
Class: |
F24C 15/168
20130101 |
Class at
Publication: |
126/339 |
International
Class: |
F24C 015/16 |
Foreign Application Data
Date |
Code |
Application Number |
Nov 19, 2002 |
WO |
PCT/EP02/12950 |
Dec 20, 2001 |
DE |
DE 101 62 922.2 |
Claims
1-9. (canceled)
10. An extraction system for a domestic appliance, such as a
cooking device, comprising: an item holder; said item holder
including at least a first fixed support unit and at least a second
mobile support unit; said mobile support unit mobile with said item
holder and guided on said fixed support unit; and said mobile
support unit including at least one bearing surface for receiving
upward substantially vertical forces acting on said mobile support
unit and said vertical forces caused by an overturning moment
working at least in an extracted position on said item holder.
11. The extraction system according to claim 10, including said
mobile support unit having at least two (2) support elements
connected by at least one tie-bar element.
12. The extraction system according to claim 11, including said
bearing surface is arranged on said tie-bar element.
13. The extraction system according to claim 10, including said
fixed support unit has at least one guide element formed by a
rod.
14. The extraction system according to claim 13, including said
guide element rod has a substantially round cross-sectional
surface.
15. The extraction system according to claim 13, including said
mobile support unit mounted displaceably with a socket-shaped
receiving area on said guide element.
16. The extraction system according to claim 10, including said
mobile support unit roller-mounted by rolling members on said fixed
support unit.
17. The extraction system according to claim 16, including said
rolling members arranged in said socket-shaped receiving area on
said guide element.
18. A cooking device including an extraction system, comprising: an
item holder; said item holder including at least a first fixed
support unit and at least a second mobile support unit; said mobile
support unit mobile with said item holder and guided on said fixed
support unit; and said mobile support unit including at least one
bearing surface for receiving upward substantially vertical forces
acting on said mobile support unit and said vertical forces caused
by an overturning moment working at least in an extracted position
on said item holder.
19. The cooking device according to claim 18, including said mobile
support unit having at least two (2) support elements connected by
at least one tie-bar element.
20. The cooking device according to claim 19, including said
bearing surface is arranged on said tie-bar element.
21. The cooking device according to claim 18, including said fixed
support unit has at least one guide element formed by a rod.
22. The cooking device according to claim 21, including said guide
element rod has a substantially round cross-sectional surface.
23. The cooking device according to claim 21, including said mobile
support unit mounted displaceably with a socket-shaped receiving
area on said guide element.
24. The cooking device according to claim 18, including said mobile
support unit roller-mounted by rolling members on said fixed
support unit.
25. The cooking device according to claim 24, including said
rolling members arranged in said socket-shaped receiving area on
said guide element.
Description
[0001] The present invention is based on an extraction system of a
domestic appliance, in particular a cooking device, according to
the preamble of claim 1.
[0002] DE 36 28 763.6 A1 discloses a generic extraction system of a
cooking device for an item holder. The extraction system has a
first support unit formed by fixed rails. Rails of a second support
unit are mounted mobile on the fixed rails of the first support
unit and form a so-called telescopic extraction. The mobile rails
of the second support unit are withdrawn together with the item
holder from the cooking device. The item holder is supported in the
retracted state and in the extracted state of the extraction system
on the mobile rails of the second support unit.
[0003] The object of the invention is to provide a generic
extraction system and a cooking device with a corresponding
extraction system, in particular with greater comfort. The task is
solved according to the present invention by the characteristics of
the independent claims, while advantageous configurations and
further developments of the invention can be inferred from the
independent claims.
[0004] The invention is based on an extraction system of a domestic
appliance, in particular a cooking device, for an item holder, with
at least a first, fixed support unit and with at least a second
support unit mobile with the item holder, guided on the first
support unit.
[0005] It is put forward that the second support unit has at least
a bearing surface for receiving forces acting in an upward vertical
manner, which are caused by at least an overturning moment working
in the extracted state on the item holder. Based on the receiving
possibility of the overturning moment the item holder can be
designed to overhang the first and the second support unit. The
item holder can be withdrawn from a space, in particular from a
cooking chamber, without a part of the support unit having to be
withdrawn from the space. The item holder can be gripped
comfortably in the extended state advantageously at the side,
without being hindered by the support units. In particular, with
cooking devices a user can avoid being burnt on an extended bearing
element. Further, a simply outfitted extraction system can be
achieved and the second support unit can be configured in a small
size advantageously. In particular, in cooking devices this can
result in the volume to be heated inside the cooking chamber being
reduced and covering functional elements, such as for example
lamps, can easily be avoided. The overturning moment can be
absorbed by the bearing surface or additionally by one or more
support elements of the first und/or of the second support unit,
such as for example when the item holder is in the retracted state
by a fixed bearing element of the first support unit.
[0006] If the second support unit has two support elements
connected via a tie-bar, a stable support can be first achieved by
the two support elements, and secondly a synchronous movement of
the support elements can easily be ensured by the tie-bar. As a
result the item holder can be connected comfortably to both support
elements simultaneously, or it can be suspended in the latter. In
addition, the tie-bar can be made use of to advantage to secure the
bearing element of the second support unit in a defined position to
the first support unit, for example the tie-bar can be used to
prevent the bearing element from twisting on a bearing element of
the first support unit with a round cross-sectional surface.
[0007] In a further configuration it is proposed that the bearing
surface for receiving forces acting in an upward vertical manner is
arranged on the tie-bar. This can result in a large bearing surface
and a particularly secure support for the item holder.
[0008] If the first support unit has at least one guide element
formed by a rod, simple retrofitting can be guaranteed, and in
particular if the bearing element formed by the rod is designed as
a plug-in. Instead of rods the guide elements of the first support
unit can also be formed by ribs formed into the side walls of a
space, effectively avoiding additional components.
[0009] The guide element formed by a rod can have a different
cross-sectional surface, of significance to the expert. But if the
guide element has a round cross-sectional surface, this can create
an advantageously large guide surface and an elegantly proportioned
and easy-to-clean first support unit can be achieved using
cost-effective standard components.
[0010] It is also put forward that the second support unit is
mounted displaceably with a socket-shaped receiving area on the
guide element. The overturning moment, in particular over a large
surface, can be transferred from the second support unit to the
first support unit resulting in a high-quality action, and
particularly in that the second support unit is roller-mounted on
the first support unit, advantageously producing minimal friction.
It is also possible, however, that the second support unit is
guided by one or more slide surfaces on the first support unit.
[0011] Rolling members are preferably arranged in the socket-shaped
receiving area of the second support unit, where they can be held,
protected from external influences.
[0012] Further advantages will emerge from the following
description of the diagrams, which illustrate an embodiment of the
invention. The diagram, the description and the claims contain
numerous characteristics in combination. The expert will
appropriately view the characteristics individually and assemble
them into meaningful further combinations.
[0013] FIG. 1 shows a schematically illustrated cooking oven from
the front,
[0014] FIG. 2 shows a schematically illustrated section of an
extraction systems of the cooking oven from FIG. 1 without baking
tray in a first view,
[0015] FIG. 3 shows the extraction system from FIG. 2 in a second
view with baking tray, and
[0016] FIG. 4 shows a longitudinal section along line IV-IV in FIG.
3.
[0017] FIG. 1 shows a cooking oven 10 in frontal elevation with a
muffle 21 arranged in a cooking oven housing 20, which delimits a
cooking chamber 22, closed by a cooking oven door 23. The cooking
oven 10 has an extraction system for a baking tray 11 as well as
for gratings, not illustrated in greater detail here.
[0018] The extraction system has three bearing planes, in each case
with a first, fixed support unit 12 and with a second support unit
13 mobile with the baking tray 11, guided on the first support unit
12. The extraction system will be described hereinbelow by means of
the support units 12, 13 arranged in the lower bearing plane,
whereby the support units 12a, 12b, 13a, 13b are designed in the
middle bearing plane and in the upper bearing plane corresponding
to the support units 12, 13 in the lower bearing plane.
[0019] On both side walls of the muffle 21 the first support unit
12 has in each case a guide element 18, 18' formed by a plugged-in
guide rod, configured as identical components (FIGS. 1 and 2). The
guide element 18 is plugged in by its rear end in a rear wall of
the muffle 21. The guide element 18 extends from its rear end at a
distance from the side wall of the muffle 21 into a front region of
the cooking chamber 22, and makes a ninety-degree angle 24 in the
front region in the direction of the side wall of the muffle 21,
and is plugged into the side wall by its front end. The guide
element 18 is made of chrome or enamelled steel and has a round
cross-sectional surface.
[0020] The second support unit 13 has two substantially identical
support elements 17, 17', which are in each case roller-mounted are
on the elements 18 by a socket-shaped receiving area 19. Two
annular rolling member cages 25, 26 with rolling members, not
illustrated in greater detail here, are held in each case (FIG. 4)
in the socket-shaped receiving area 19. Attaching to the
socket-shaped receiving area 19 is a half-shell extension 27,
running along the topside of the guide element 18, as in FIGS. 2
and 4. Formed on a topside of the extension 27 and of the
socket-shaped receiving area 19 is a frame 28 with a substantially
rectangular cross-sectional surface, extending from the front end
of the extension 27 to just in front of a tie-bar 16, by which the
support elements 17, 17' are connected. The frame 28 is joined
positively in an edge area on the underside of the baking tray 11
and forms a bearing surface 29 for the same (FIGS. 3 and 4). Formed
at the front end of the bearing element 17, and also at the front
end of the extension 27 on its topside, and on the frame 28, is a
bolt 30 extending vertically upwards, which extends through a
recess 31 of the baking tray 11 when the baking tray 11 is mounted,
by which the baking tray 11 and the bearing element 17 are
connected positively in and against the direction of extraction
33.
[0021] The support elements 17, 17' are ca. a quarter of the length
of the baking tray 11, so that when the baking tray 11 is in the
suspended state an overturning moment acts thereon. The support
elements 17, 17' could also, however, be designed longer or
shorter, but are advantageously at least shorter than the half
length of the baking tray 11. In the extracted state of the baking
tray 11 the support elements 17, 17' largely remain in the cooking
chamber 22, and the baking tray 11 protrudes out from the cooking
chamber 22.
[0022] To support the overturning moment, a projection 32 extending
in the direction of extraction 33 along the tie-bar 16 connecting
the support elements 17, 17' is formed on its topside, and forms a
bearing surface 14 for receiving forces acting in an upward
vertical manner 15, which are caused by the overturning moment
acting on the baking tray 11. In the assembled state of the baking
tray 11 the projection 32 in the direction of extraction 33 grips
the baking tray 11 at its rear edge.
* * * * *