CN102510929B

CN102510929B - Door-opening device for a domestic appliance, and domestic appliance with such a door-opening device

Info

Publication number: CN102510929B
Application number: CN201080043967.8A
Authority: CN
Inventors: G.莫勒; P.斯泰纳; J.贝克
Original assignee: BSH Bosch und Siemens Hausgeraete GmbH
Current assignee: BSH Hausgeraete GmbH
Priority date: 2009-10-02
Filing date: 2010-10-01
Publication date: 2014-10-29
Anticipated expiration: 2030-10-01
Also published as: CN102510929A; EP2483502B1; EP2483502A1; WO2011039364A1

Abstract

The invention relates to a door-opening device for a domestic appliance (1), which is designed for automatically opening a door (6) of the domestic appliance (1) and has a drive motor (25) which is coupled mechanically to a door hook (34) via an actuating means, wherein the drive motor (25) is coupled to a cam element (28) of the actuating means, the cam element having a helical camway (29), against which butts a transmission element (32) of the actuating means, this transmission element being coupled to the door hook (35) and making it possible to transmit the movement of the cam element (28) to the door hook (34). The invention also relates to an oven (1) with a door-opening device (24).

Description

For the door opening device and the home appliances with this door opening device of home appliances

The present invention relates to a kind of door opening device for home appliances, described door opening device is designed to automatically open the door of described home appliances and have CD-ROM drive motor, and described CD-ROM drive motor mechanically connects with gate stop by operating means.In addition, the invention still further relates to a kind of the have home appliances of this door opening device, especially baking box.

Become known in many ways the door opening device of home appliances, for example baking box, micro-wave oven, refrigerator-freezer, refrigerator or similar item.In this respect, door is arranged for sealing baking chamber or other apotheca.In this respect, known door, it has at least one handle element on front panel in front, and this handle element can be held and can manually be handled by user, thereby can open door.This handle element is conventionally outstanding forward, thereby this handle element needs space on the one hand, and user may bump against on handle element on the other hand.This is external thisly only can may need to use relatively large power in the handle element of manual control, opens to can guarantee.

In addition, door opening device is arranged for and opens door in door gear automatically.For example, in this regulation, by pressing operation element or open button, door is unlocked and automatically opens or upspring.At above-mentioned operating mechanism or when required electronic component lost efficacy for this reason, can only open by attendant or field service department.In this external this electronically controlled door opening device, its operating buttons of arranging by front is handled by user, is no longer provided with other obvious handle element.Therefore operability is unaccommodated for the user.Therefore in order to open completely, user must contact front panel or the common not door region for grasping of contact clearly, then opens door completely.Thus, door because finger mark etc. is made dirty, and therefore door because sanitary condition must often clean and clean.

In addition, known electronically controlled door opening device has very complicated structure and is being relatively slowly aspect its reaction time before this.

The object of the invention is, realize a kind of door opening device for home appliances and this home appliances with door opening device, utilize described door opening device or utilize described home appliances cosily and in the case of not having unexpected motion, to open door, especially gate stop can move especially equably by CD-ROM drive motor.

The door gear, the home appliances with the feature of claim 15 of the feature of described object by having claim 1 are realized.

In view of the particular design scheme according to door opening device of the present invention, this door opening device is designed to automatically open the door of home appliances.Door opening device especially has CD-ROM drive motor, and this CD-ROM drive motor is by operating means and the gate stop mechanical attachment of door opening device.CD-ROM drive motor connects with the cam member of operating means, this cam member has spirality cam working face, the transmitting element of operating means reclines on cam working face, described transmitting element connects with described gate stop, and can utilize described transmitting element that the motion of described cam member is delivered on gate stop.By this particular design scheme of door opening device and the particular design scheme acting in conjunction of element, the rectilinear motion that can convert rotatablely moving of CD-ROM drive motor, particularly its axle to gate stop is for opening door.By the very special design scheme of cam member and spirality cam working face, can realize quietly and equably motion conversion by especially flat, thereby also can prevent less desirable motion at this.Therefore, high torque (HT) or power effect can be avoided on parts, occurring in the time opening, thereby the wearing and tearing of door opening device can be obviously reduced.Spirality that particularly can be by cam or sinuous work plane (Bahn) are realized accurate, quantitative especially and motion guidance accurately.

Preferably, cam member can rotate around its longitudinal axis by CD-ROM drive motor, and will be rotatablely moved and be converted to rectilinear motion by spiral cam working face (Nockenbahn), can make gate stop rectilinear motion for opening door by this rectilinear motion.

This just in time can realize a kind of manipulation schemes, wherein uses the least possible parts, and realizes reliable direction of motion conversion by the parts that connect in addition.The rectilinear motion guiding of gate stop and direct effect more firmly and are more freely opened possibility to phase specific energy realization on the door latch of door opening device.Can avoid thus blocking, wedging (Verspreizen) or less desirable torsion and avoid door to open by locking.

Preferably, can detect by electronic switch the position of rotation of cam member.Can aspect accurate control, realize more accurately motion guidance thus.

Preferably, cam member has the first position of rotation interval (Drehstellungsintervall).If cam member is arranged in this first position of rotation interval with respect to location recognition switch, identify the position of cam member, this position allows door completely closed.Because cam member connects with motor, also identify thus the position of motor, wherein motor has reached its zero-bit to a certain extent.It is like this that motor especially also turns round again after door is opened, until this motor has arrived again its zero-bit, so that door that then can at any time and then manually closure is opened completely.Consider thus high security requirement because motor and and then cam member be not retained in less desirable position, can not be again in described position door close completely.Exactly when this position just can not allow user identify immediately: when whether door is completely closed, for example may occur the state of safety critical in the time that oven heat is moved.Can avoid this point by this embodiment.

Particularly preferably regulation, motor and cam member are turned back to zero-bit or home position from terminal location as follows, continue to rotate up the party, move to terminal location from zero-bit at described direction overhead cam element.This means, motor drive shaft always only continues rotation in a direction of rotation.At cam member when zero-bit is transferred to terminal location, also at direction rotation identical when transferring to zero-bit from terminal location subsequently.By a this only direction of rotation possibility of motor and cam member, can obviously more simply and thus also control motor with lower cost and lower likelihood of failure by control module.

Preferably, structural salient on the lateral surface of cam member, this projection can detect by the electronic switch of the position of rotation for identifying cam member.Can detect the variation of shell face by the electronic switch of the projection on the shell face at cam member and location spaced away, and identify reliably at any time: which position of rotation cam member is arranged in.

The design scheme that particularly the particular design scheme for recognizing site can realize very firmly and component reduce by this, this design scheme can also be constructed especially compactly in addition.Because the Integral design scheme by cam member substantially that convexes to form realizes, thus this projection especially position stability and wearing and tearing construct less and arrange.

Thus, particularly can realize the design scheme that component reduce very much.

Preferably, cam member has the second position of rotation interval.Particularly, this second position of rotation interval extends to terminal location from the first rotation centre position (Drehzwischenstellung).Therefore particularly, the whole possibility that rotatablely moves by parts forms two regions in other words, two position of rotation intervals, wherein basis: which region is just arranged in electronic switch and detected by this switch, can identify: whether can close the door of opening completely.

Preferably, the cam working face length being comprised by the first position of rotation interval is obviously longer than, is especially several times as much as to the cam working face length that makes to be comprised by the second position of rotation interval.The motion of the accurate guiding of transmitting element on cam working face can be considered by this special length dimension, and the position for complete door close can be identified very exactly.

Preferably, the length of the combination at the position of rotation interval of spirality cam working face draws around a turn over of the longitudinal axis of cam member.Therefore cam member around the rotation possibility of its rotation preferably corresponding to unique turn over.By this design scheme, can realize in particularly advantageous mode: about the complete rectilinear motion of gate stop without too fast rotatablely moving, thereby can prevent that transmitting element is from cam working face slippage.In addition by this design scheme, also can make wearing and tearing keep especially less, and guarantee the motion special guiding and stably of gate stop.

Particularly produce thus as far as possible little torque, thereby can also realize in the few especially mode of wearing and tearing the acting in conjunction of parts at this.

Preferably, transmitting element comprises ball bearing.In addition regulation is arranged longitudinal ball bearing between motor bracket and cam member.By this layout with there is the particular design scheme of longitudinal ball bearing, can avoid occurring axial force on the driving shaft of motor.Radial load on motor drive shaft is equally very little thus.

Particularly only gate stop to be arranged in door upper, and other parts of door opening device be arranged in home appliances originally with it, and be not arranged on door.Preferably, be not arranged on the bottom blocking mechanism that parts on door are arranged in home appliances for opening and closing door.Particularly by gate stop, the rectilinear motion in the time opening especially can be removed the Interlock Status between gate stop and door latch.

Particularly, door opening device works in the following manner: CD-ROM drive motor is controlled by control module, and the cam or the cam member that connect with motor drive shaft correspondingly rotate.Also make the rotation of spirality cam working face by this rotatablely moving, and the transmitting element being in contact with it, particularly ball bearing roll along this spirality cam working face.This ball bearing is fixed on tappet, and this tappet directly presses against on gate stop, and wherein tappet is shifted in the housing of door opening device.Thus, gate stop is also only at rectilinear direction superior displacement, and opens and the Interlock Status of door latch.In addition regulation, CD-ROM drive motor can stop rapidly by following manner: make this CD-ROM drive motor short circuit.Can realize thus good cam member position adjustment, because this system is reacted very rapidly and do not dallied to a certain extent.In addition, can realize very rapidly in the following cases deexcitation: for example door is by following manner by locking, and for example door is plugged or people leans against on door.Can limit motor power supplying at this, or for example be limited to electric current in motor by series resistance.Prevent from thus damaging motor and can disconnect fast at any time.

Preferably, comprise door for the door gear of home appliances, described door has the first vertical longitudinal side, at least one build-up member (Anschlagelement) preferably can be installed in this first vertical longitudinal side and swing for making door be parallel to longitudinal side.In addition, door comprises and the vertical longitudinal side of the first longitudinal side opposed second and the upper side that extends between described longitudinal side.In addition, door gear also comprises the door opening device for automatically opening door.Regulation: construct handle element and/or construct handle element in the second longitudinal side on upper side, wherein door has at least one identification sensor, this identification sensor is designed to detect around handle element or the finger in the surveyed area at described or a handles element place, and door gear comprises control module, this control module is designed to carry out control gate device for opening according to the information of identification sensor.Door gear is also set, and wherein door is particularly designed for side direction assembling (Anschlagen), thereby door can be around vertical longitudinal line of movement for opening and closing.In addition, in very special location, handle element is not placed on a front, but in the minimized and joint space-efficient design scheme of structure space, is placed in the second vertical longitudinal side and/or on upper side to a certain extent.Because door has certain thickness, this second longitudinal side and thickness related to this are suitable for accommodating handle element, thereby can not change due to handle element the thickness of door related to thisly.Therefore, longitudinal side is such face, and its thickness by door forms and extends back from front.In addition, can also prevent this special location in longitudinal side by handle element: people encounters on handle element, as raising forward from front or similarly situation when handle element.In addition, this special location of handle element is still for the fit closely arrangement of user, exactly at door on correct side, originally arrange and open intuitively and grasping aspect, this being placed in intuitively guides user to a certain extent to correct position.Can also realize a kind of design scheme by following manner:, handle element is designed to utilize finger to grasp clearly, in this design scheme, can avoid utilizing finger or hand less desirable grasping or slip (Entlanggleiten) in the other parts of door, thereby can prevent due to the staff door of making dirty.Particularly, also can realize very (ergonomisch), the adaptive grasping possibility of ergonomics by this clear and definite handle element, its anti-skidding or similar behavior, thereby correspondingly guarantee the design scheme applicable for user, it for further being opened safely and moving door by user after automatically opening.In particularly advantageous design scheme, be provided with at least one identification sensor, by the very rapidly and as soon as possible identification contact of this identification sensor, grasp or contactlessly arrive in region the finger of handle element at least nearby, thereby detect very fast and early user's the hope of opening, and therefore also can be obviously control gate device for opening more quickly.The reaction time of door opening device can obviously shorten automatically thus, and foreshortens to the opening time that is less than 0.5 second.

Preferably, handle element is configured to firm parts, its Construction integration.Especially regulation, handle element position can not be arranged on the second longitudinal side and/or upper side to the motion of phase opposite house regularly and therefore.Therefore do not arrange, handle element is by making certain opening mechanism running with respect to the property of can be movable relatively of door.Therefore handle element is only for grasping.Preferably, on the second longitudinal side of door and/or upper side, construct gap portion, arrange therein handle element.Can realize joint space-efficient and the minimized design scheme of structure space by the layout of this at least part of sedimentation.Can settle on mechanically stable ground thus on the other hand.

Preferably, described handle element is the lath of straight line especially, and described lath has the zone of action, particularly with grip recess accordingly without the groove of corner angle.This design scheme is ergonomic moulding particularly, and it allows especially easily with finger grip, is expended and after automatically opening, is manually continued to open door by less power.Therefore also can anti-skidding at this, and owing to avoiding injuring or hanging thereon without the design scheme of corner angle.Particularly, by this design scheme, form enough grip area by more shallow recess.

Preferably, design longlyer than deviating from a positive trough rim towards the trough rim in door front.By trough rim or wall about the asymmetric design scheme of recess, it is also conceivable that as far as possible accurately and keep stable grasping at this.Can realize larger region on the one hand, people can utilize described region finger to enter into grip area, have also improved the accessibility to grip area thus at this.On the other hand, can also reduce deviating from the structure space degree of depth on a positive side at this, thereby can avoid the less desirable collision on other parts of home appliances.

While observing door in front, described handle element preferred arrangements hides after the front panel of door and by front panel.This is the layout that is subject to special protection, thereby also can avoid bumping against thereon, and can avoid in addition less desirable wearing and tearing or the infringement of handle element.Particularly also can consider thus high-quality requirement and designing requirement, because can't see handle element while observing in front.

Preferably, preferably capacitance type sensor of at least one identification sensor.This sensor can detect in surveyed area or very rapidly at originally finger with it of handle element, and forms relatively securely in function.

Preferably in door after handle element, especially on handle element, after the zone of action, arrange at least one electrode of capacitance type sensor.Can realize especially accurately thus and detect especially sensitively.In addition also provide and highly protected and few position of wearing and tearing by this special local positioning of electrode.Particularly can also in the time that removing the arrangement of handle element in longitudinal side, realize interference-free simple accessibility for the replacing of electrode or maintenance object by this position.

Preferably, described handle element is at least made up of non-conducting material in the region of identification sensor.

Described identification sensor can be also inductive pick-up or microswitch.

Particularly, described automatic door opening device has insurance for children device.This is particularly advantageous, because can avoid in the time that children grasp in handle element thus, door is less desirable to be opened automatically.Exactly in home appliances, in for example baking box or similar appliances, it has relatively high temperature in the time of operation in baking chamber, baking chamber utilizes door seal to close, and therefore can realize the high safety level for children.

Preferably, described door has operating means, and this operating means is configured on the front panel of door.This structure that is integrated into (t ü rintegriert) in door by operating means has realized again favourable compact design scheme and the layout being applicable to for user, and it can clearly and at any time approach.

Particularly preferably regulation, described insurance for children device can by operating means, by control module Electronic Control activate and deexcitation.Therefore can handle fast and reliably insurance for children device.In addition this operating means can have display unit, can show different information for user by this display unit.By the display unit of operating means being integrated in door equally and being particularly configured on front panel, be good especially for user's visuality.Therefore activate in this respect, or the instruction of the insurance for children device of deexcitation just can be fast and identify by being grown up reliably.

Preferably, described door opening device can also be handled by operating means.By the design scheme of this redundancy, door can be opened by operating means in the following cases: the possibility of opening by handle element lost efficacy or can not approach without restriction.

Particularly advantageous in the following cases: directly location abreast of two home appliances with this door opening device, and two mutually towards vertical longitudinal side next-door neighbour mutually substantially.

Preferably, the activation by control module of door opening device, particularly motor is relevant to following manner:, identify the duty of home appliances, especially baking box do not activate heat in service; And/or the lock position of the cam member of the drive unit of the detection of electrons ground identification door of closing and/or door opening device.Can also improve thus the safety measure aspect not expecting to open.

Momentarily manual unlocking of door.Also can in the time of power-off, realize and open reliably and can avoid safety critical state thus.

Because two kinds of possibility, one side of opening door are passed through handle element, passed through operating means on the other hand, can arrange related to thisly, this can configure by operating means and the executive component of attaching troops to a unit.Therefore also can regulate uniquely for user, handle automatic door opening device by which kind of possibility of two kinds of possibilities.Also can obviously improve thus user availability (Kundennutzen).

Correspondingly construct the control module of door gear related to thisly, and can store therein the configuration being regulated by user uniquely, until make again if desired its change.

Preferably, the door opening device of described door gear has gate stop, it is upper that this gate stop is arranged in door, and this gate stop can utilize door opening device, handle point-blank with the drive unit of door apart arrangement, and can utilize the door latch that is arranged in drive unit side to carry out release for opening door.Handle gate stop by straight line, open can be very reliable and do not block or wedging realize.Because door latch is being more complicated aspect its motion, that is, to implement straight line and rotatablely move, the effect in the time that door is opened on door latch is more complicated.Can obviously reduce the easy fault (Fehleranf lligkeit) of automatic door opening device by the effect on gate stop and its rectilinear motion.

In addition, the invention still further relates to a kind of home appliances, baking box especially, it has according to door opening device of the present invention or its favourable improvement project.

Be considered as the favourable embodiment of home appliances according to the favourable embodiment of door opening device of the present invention.

Provide further feature of the present invention by claim, accompanying drawing and brief description of the drawings.Above the feature described in describe and Feature Combination and below at accompanying drawing described in describing and/or the feature and the Feature Combination that illustrate separately in the accompanying drawings, not only can in the combination providing, use without departing from the scope of the invention, and can use in other combination or separately.

Elaborate embodiments of the invention by schematic diagram below.Accompanying drawing illustrates:

Fig. 1 shows according to the phantom drawing of the home appliances with the door of opening of the present invention,

Fig. 2 shows the phantom drawing of the handle element of door opening device,

Fig. 3 shows the schematic cross sectional view in the region of handle element according to the door of Fig. 1,

Fig. 4 shows the phantom drawing of the embodiment of door opening device,

Fig. 5 shows from below according to the phantom drawing of the door opening device of Fig. 4,

Fig. 6 shows the view of door opening device in the home position of cam member from below,

Fig. 7 shows according to the partial enlarged drawing of the door opening device of Fig. 4.

Parts identical or that function is identical are furnished with identical Reference numeral in the accompanying drawings.

In Fig. 1, with the phantom drawing of simplifying, baking box 1 is shown, described baking box has housing 2.In housing 2, form baking chamber 3, described baking chamber is packed in other words (muffel) 4 by Muffle furnace and is limited.Positive charging opening 5 can seal by door 6.Door 6 illustrates with the state of opening.Door 6 can swing according to arrow instruction around vertical longitudinal axis A.Door 6 has the first vertical longitudinal side 7, in the described first vertical longitudinal side, is furnished with build-up member, utilizes described build-up member to make 6 to be fixed on housing 2 and can be with respect to housing 2 relative motions.In addition, door 6 has and the vertical longitudinal side 8 of the first vertical longitudinal side 7 opposed second, constructs handle element 9 in an embodiment in the described second vertical longitudinal side.In addition, door comprises upper side 41.Can specify, on this upper side 41, be furnished with another additional handle element, or select handle element 9 to be arranged on this upper side 41, and not be arranged in longitudinal side 8.In addition, door 6 has front panel 10, wherein constructor device 12 on the front 11 of front panel 10.This operating means 12 comprises display unit 13 and at shape, position and the executive component 14 and 15 that quantitatively only illustrates.Therefore not only integrated operation device 12 but also integrated handle element 9 in door 6.

In Fig. 2, with phantom drawing, handle element 9 is shown.Described handle element is the straight line grooved rail that one forms, and described straight line grooved rail has the zone of action 16.This zone of action is designed to without the grip recess of corner angle or groove, and the trough rim 17 and 18 being wherein parallel to each other limits grip recess or the zone of action 16.Ground related to this, handle element 9 is asymmetricly constructed, because extend forward further in other words than the trough rim 17 away from front panel 10 is longer towards the trough rim 18 of front panel 10.

In Fig. 3, illustrate along the sectional drawing of secant III/III in Fig. 1 with schematic diagram.Can find out, handle element 9 is integrated in the gap portion 19 of door 6.Therefore handle element 9 be integrated into a certain extent door 6 in and sedimentation construct.At least one electrode 20 of constructing capacitance type sensor on the back side of handle element 9, this sensor is identification sensor.Whether as shown in Figure 3 identify by means of identification sensor, whether finger 21 extends in the surveyed area 22 of exemplary restriction by a dotted line, and/or finger 21 contact handle element 9.Electrode 20 additionally or the position below shown in substituting can also be arranged on handle element 9 or be integrated in 6.

The communication of identification sensor is to control module 23(Fig. 1), described control module can be arranged on other position in door 6 or in housing 2, wherein control module 23 carrys out control gate device for opening according to the information of identification sensor, automatically opens door 6 by described door opening device.

If identified, one or more fingers 21 are positioned at surveyed area 22 or a finger 21 contacts with handle element 9, in the time of contact handle element 9, identify at the latest related to thisly, there is user's the hope of opening, and can react to this very rapidly by control module in ground related to this, and trigger gate device for opening.

This is external according to it can also be seen that in the view of Fig. 3, and front panel 10 extends so far away in x direction, makes front panel at least equally long with the seamed edge 18 of handle element 9.Observe thus when baking box 1 in front and also observe thus the door of closing in front at 6 o'clock, handle element 9 is hidden by front panel 10.

Handle element 9 positions are fixed and therefore can not be positioned on door to relative motion with respect to door 6.Handle element 9 is furnished with especially therein in the region of one or more electrodes 20 and is made up of the material that can not conduct electricity.

Can or additionally handle baking box 1 by operating means 12 in addition by the handle element 9 for automatically opening door, wherein for example operating buttons 14 or 15, to trigger automatic door opening device.By this design scheme, user also can configure as required individually as follows: whether should or realize activation and the triggering of autoamtic-opening device by operating means 12 by handle element 9.

Preferably regulation, in the time of contact handle element 9, in the time that door 6 is closed and when the heating operation (Pyrolysebetrieb) of baking box 1 is not when reactivation, just can trigger CD-ROM drive motor for automatically opening 6.Preferably regulation, in the time that door is just opened originally, CD-ROM drive motor does not activate.Ground related to this, in the time holding handle element 9 in order further to open door or to close door 6, described CD-ROM drive motor deexcitation.

Especially also regulation, baking box 1 has insurance for children device, and this insurance for children device can activate and deexcitation by operating means 12.If activate insurance for children device, can not in the closed condition of door 6, automatically realize the triggering of door opening device by grasps handle element 9, and can not realize the simple activation that automatic door device for opening triggers by manipulation operations element 14 or 15 simply.Only have in the time of children's safeties again deexcitation, or for example, when the mode with special and method are implemented the operation of the special further Multiple Combination of one or more executive components 14 and 15, while handling, could be realized the triggering of automatic door device for opening in the time connecting insurance for children device.

In Fig. 4, show the embodiment of door opening device 24 with phantom drawing.This door opening device comprises the CD-ROM drive motor 25 with driving shaft 26.Motor 25 is fixed on motor bracket 27.In addition, door opening device 24 comprises cam member 28, and described cam member is configured to hollow cylindrical and on it deviates from the end of motor 25, has the cam working face 29 of helical configuration.Cam member 29 and motor 25 support by longitudinal ball bearing or axial ball bearing 30, utilize described longitudinal ball bearing or axial ball bearing to avoid being applied to the axial force on driving shaft 26.

In addition, door opening device comprises electronic switch 31, and described electronic switch is arranged on motor bracket 27.This switch 31 layout adjacent with cam member 28, wherein said switch is designed to detect the position of rotation of cam member 28 around rotation, and described rotation is equal to the axis of driving shaft 26.Transmitting element 32 engages (angreifend) or rolls (abrollend) on cam working face 29, and described transmitting element is designed to ball bearing.This transmitting element 32 is connected with tappet 33 or is fixed thereon.Tappet 33 is mechanically effectively connected with gate stop 34.Gate stop 34 again with door latch in other words door lock ratchet (Drehfalle) thus 35 be connected the Interlock Status of generator gate 6.Tappet 33, motor bracket 27, door latch 35 and if desired other parts are arranged in the housing 36 of door opening device 24.The design scheme of this conception by door opening device 24, rotatablely moving of motor 25, especially driving shaft 26 can be delivered on cam member 28, wherein owing to thering is the specially-shaped of cam member 28 of spirality cam working face 29, can convert this rotatablely moving to tappet 33 and and then the rectilinear motion of gate stop 34.Therefore gate stop 34 only moves along the direction of axis B point-blank.

In Fig. 5, show door opening device 24 from below with phantom drawing.In the first operating position this illustrate, i.e. the terminal location of cam member 28, wherein the view of transmitting element 32 and Fig. 4 arrives the top of cam working face 29 similarly.

In Fig. 6, to show the phantom drawing of door opening device 24 from below with the similar view of Fig. 5, show another duty wherein related to thisly.The home position of cam member 28 shown in Figure 6, wherein arrives the nethermost position of cam working face 29 at this transmitting element 32.

Motor 25 is electrically connected with control module 23 and triggers by this control module.

Control module 23 and door opening device 24 belong to door 6(Fig. 1 of door gear 37).

Figure 7 illustrates the local I of amplification shown in Figure 4.At this, this view rotates slightly with respect to the view in Fig. 4.Not only can see the switch 31 on motor bracket 27, but also can see the specific position with respect to cam member 28.Cam member 28 can be around its longitudinal axis C rotation by connecting with driving shaft 26, wherein between home position and terminal location, only implements the turn over around axis C in other words at initial position.Structural salient 39 on the shell face 38 of cam member 28.From initial position shown in Figure 7, projection 39 extends to end 40 along circumferential direction.This end 40 also defines the end at the first position of rotation interval, and it extends to the rotation centre position limiting by end 40 from initial position.This region or this position of rotation interval illustrate between the line of only exemplarily describing, and described line is not shown and only show border and then the angular extensions alpha at the first position of rotation interval in actual embodiment.In the angular extensions alpha at expression the first position of rotation interval, switch 31 can detect this position exactly by following manner: described switch is surveyed projection 39.As long as cam member 28 is positioned at the inside at the first position of rotation interval with respect to the surveyed area of switch 31, so just identifies the zero-bit of motor 25 and stop the further motion of motor 25.At motor 25 and guaranteed reliably in this position of cam member 28 thus: can manually close again door 6 completely.If cam member 28 is arranged in beyond the first position of rotation interval and is therefore located at the position of rotation between rotation centre position and the terminal location (the second position of rotation interval) of cam member 28 that the end of angular extensions alpha starts, can not close door completely.Then motor 25 is placed in its zero-bit, and this identifies by cam member 28 and switch 31 again.Can avoid thus cam member 28 and motor 25 rotate too far away or rotate very little.By at first cam member 28 of inside, position of rotation interval and prevented this connection of motor 25: transmitting element 32 touches prematurely on cam working face 29 and can not further move in the time that door 6 is closed and then at gate stop 34 in the time that the direction of cam member 28 is moved.The length of cam working face 29 is significantly less than the part section (Teilausschnitt) of cam working face 29 in the first position of rotation interval characterizing by angular extensions alpha, part section described in the second position of rotation interval extend through.

Only gate stop 34 can be fixed on door 6, and other parts are arranged in housing 2 individually with respect to door 6.Door opening device 24 is configured on the bottom blocking mechanism of door 6.

In fact switch 31 is connected by projection 39, and identifies thus this first position of rotation interval.In the time that motor receives the information about for example porch of switch 31, motor 25 stops.Switch 31 is identified the angle position of cam member 28.For example upper and while by mistake automatically opening, in order to stop rapidly motor 25, make motor 25 short circuits when block or lean against door due to user.

List of numerals

1 baking box

2 housings

3 baking chambeies

4 Muffle furnaces

5 charging openings

6

7,8 longitudinal side

9 handle elements

10 front panels

11 fronts

12 operating means

13 display units

14,15 executive components

16 zones of action

17,18 trough rims

20 electrodes

21 fingers

22 surveyed areas

23 control modules

24 door opening devices

25 CD-ROM drive motors

26 driving shafts

27 motor brackets

28 cam members

29 cam working faces

30 axial ball bearings

31 switches

32 transmitting elements

33 tappets

34 gate stops

35 door latch

36 housings

37 door opening devices

38 shell faces

39 projections

40 ends

41 upper sides

A, B, C axis

α angular range

Claims

1. for the door opening device of home appliances (1), described door opening device is designed to automatically open the door (6) of described home appliances (1) and has CD-ROM drive motor (25), described CD-ROM drive motor mechanically connects with gate stop (34) by operating means, wherein said CD-ROM drive motor (25) connects with the cam member (28) of described operating means, described cam member has spiral cam working face (29), the transmitting element (32) of described operating means reclines on described cam working face, described transmitting element connects with described gate stop (34), and can utilize described transmitting element that the motion of described cam member (28) is delivered on gate stop (34), it is characterized in that, the position of rotation of described cam member (28) can detect by switch (31), itself enter into terminal location and enter into home position from terminal location from home position in order to shift described cam member (28) and to make, described CD-ROM drive motor (25) only can be along a direction of rotation rotation.

2. by door opening device claimed in claim 1, it is characterized in that, described cam member (28) can rotate around its longitudinal axis (C) by described CD-ROM drive motor (25), and rotatablely move and convert rectilinear motion to by described spiral cam working face (29), make described gate stop (34) rectilinear motion for opening described door (6) by described rectilinear motion.

3. by the door opening device described in claim 1 or 2, it is characterized in that, described cam member (28) has the first position of rotation interval, can detect the zero-bit interval of described motor (25) by described the first position of rotation interval.

4. by door opening device claimed in claim 3, it is characterized in that, described the first position of rotation interval at the home position of described cam member (28) until extend between the first rotation centre position.

5. by door opening device claimed in claim 3, it is characterized in that, the upper structural salient (39) of lateral surface (38) in described cam member (28), described projection can detect by the switch (31) of the position of rotation for identifying described cam member (28).

6. by door opening device claimed in claim 3, it is characterized in that, described cam member (28) has the second position of rotation interval being directly connected on described the first position of rotation interval, what in described the second position of rotation interval, prevent described door (6) closes possibility completely, and the terminal location that described the second position of rotation interval is extended down to described cam member (28) is for opening described door (6).

7. by door opening device claimed in claim 6, it is characterized in that, described the first position of rotation interval and the second position of rotation interval draw around a turn over of the longitudinal axis (C) of described cam member (28) along the length of the combination of spiral cam working face (29).

8. by the door opening device described in claim 1 or 2, it is characterized in that, described transmitting element (32) comprises ball bearing.

9. by the door opening device described in claim 1 or 2, it is characterized in that, described door (6) side direction is assembled and can be around vertical axis (A) rotation for being opened and closed.

10. by the door opening device described in claim 1 or 2, it is characterized in that, only described gate stop (34) is arranged in described door (6) above, and other parts of described door opening device (24) are arranged on described home appliances (1).

11. by door opening device claimed in claim 10, it is characterized in that, is not arranged on the bottom blocking mechanism that parts on described door (6) are arranged in described home appliances (1) for opening and closing described door (6).

12. by the door opening device described in claim 1 or 2, it is characterized in that, the rectilinear motion by described gate stop (34) in the time opening described door (6) can be removed the Interlock Status between described gate stop (34) and door latch (35).

13. home appliances, described home appliances has door (6) and by the door opening device described in any one in the claims (24).

14. by the home appliances described in claim 13, and described home appliances is for cooking food.

15. by the home appliances described in claim 14, and described home appliances is baking box (1).