CN102510929A

CN102510929A - Door-opening device for a domestic appliance, and domestic appliance with such a door-opening device

Info

Publication number: CN102510929A
Application number: CN2010800439678A
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: 2012-06-20
Anticipated expiration: 2030-10-01
Also published as: EP2483502B1; EP2483502A1; WO2011039364A1; CN102510929B

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

The door opening device and home appliances that are used for home appliances with this door opening device

The present invention relates to a kind of door opening device that is used for home appliances, said door opening device is designed to automatically open the door of said home appliances and have CD-ROM drive motor, and said CD-ROM drive motor mechanically connects with gate stop through 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 for the door opening device of home appliances, for example baking box, micro-wave oven, refrigerator-freezer, refrigerator or similar item in many ways.In this respect, door is set for sealing baking chamber or other apotheca.In this respect, known door, it has at least one handle element in the front on plate in front, and this handle element can be held and can manually be handled by the user, thereby can open door.This handle element is outstanding forward usually, thereby this handle element needs the space on the one hand, and the user possibly bump against on the handle element on the other hand.But possibly need in the handle element of this external this only manual control to use relatively large power, open so that can guarantee.

In addition, door opening device is set in door gear and opens door automatically.For example in this regulation, perhaps open button through the pressing operation element, door is unlocked and automatically opens or upsprings.When the perhaps required for this reason electronic component of above-mentioned operating mechanism lost efficacy, can only open through attendant or field service department.In this external this electronically controlled door opening device, its operating buttons of arranging through the front is handled by the user, no longer is provided with other tangible handle element.Therefore operability is unaccommodated for the user.Therefore in order to open fully, the user must contact front panel or the common door zone that is not used for grasping of contact clearly, opens door then fully.Thus, door is owing to quilts such as finger mark are made dirty, and therefore door must often clean and clean owing to sanitary condition.

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

The objective of the invention is; Realize a kind of door opening device and this home appliances that is used for home appliances with door opening device; Utilize said door opening device or utilize said home appliances cosily and under the situation that does not have unexpected motion to open door, especially gate stop can move through CD-ROM drive motor especially equably.

The door gear of the characteristic of said purpose through having claim 1, the home appliances with characteristic of claim 15 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 through the 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 the spirality cam working face; The transmitting element of operating means reclines on cam working face; Said transmitting element connects with said gate stop, and can utilize said transmitting element that the motion of said cam member is delivered on the gate stop.Through this particular design scheme of door opening device and the particular design scheme acting in conjunction of element, can with CD-ROM drive motor, particularly its rotatablely move convert gate stop to rectilinear motion to be used to open door.Through the very special design scheme of cam member and spirality cam working face, can especially flat realize the motion conversion quietly and equably, thereby also can prevent the motion do not expected at this.Therefore, high torque (HT) or power effect can be avoided when opening, on parts, occurring, thereby the wearing and tearing of door opening device can be obviously reduced.Spirality that particularly can be through cam or sinuous work plane (Bahn) are realized accurate, quantitative especially and motion guidance accurately.

Preferably, cam member can be through CD-ROM drive motor around the rotation of its longitudinal axis, and will rotatablely move through spiral cam working face (Nockenbahn) and convert rectilinear motion to, can make the gate stop rectilinear motion to be used to open door through 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 through the parts that connect in addition.On the guiding of the rectilinear motion of gate stop and the door latch that directly affacts door opening device mutually the specific energy realization more firmly and more freely open possibility.Can avoid thus blocking, wedging (Verspreizen) or reversing of not expecting and avoid door to open by locking.

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

Preferably, cam member has first position of rotation (Drehstellungsintervall) at interval.If cam member is arranged in this first position of rotation at interval with respect to the location recognition switch, then identify the position of cam member, this position allows door closed fully.Because cam member connects with motor, also identify the position of motor thus, 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, and arrived its zero-bit again up to this motor, so as then can be at any time the door that is opened of closure fully manually and then.Consider the high security requirement thus because motor and and then cam member be not retained in the position of not expecting, can not be again in said position door close fully.Exactly just can not let the user identify immediately: when door is whether fully closed, the state of safety critical then for example when oven heat is moved, possibly occur when this position.Can avoid this point through this embodiment.

Stipulate that particularly preferably motor and cam member are turned back to zero-bit or the home position from terminal location as follows, continue on this direction, to rotate, move to the terminal location from zero-bit at said direction overhead cam element.This means that motor drive shaft always only continues rotation on a direction of rotation.At cam member when zero-bit is transferred to the terminal location, also with identical direction rotation when terminal location is transferred to zero-bit subsequently.Through a this only direction of rotation possibility of motor and cam member, can obviously more simply and thus also control motor through control module with lower cost and lower likelihood of failure.

Preferably, structural salient on the lateral surface of cam member, the electronic switch of the position of rotation that this convexity can be through being used to discern cam member detects.Can detect the variation of shell face through the electronic switch of convexity on the shell face of cam member and location spaced away, and identify reliably at any time: which position of rotation cam member is arranged in.

Particularly can realize very firm and design scheme that component reduce through this particular design scheme that is used for recognizing site, this design scheme can also be constructed especially compactly in addition.Because the one design scheme that convexes to form basically through cam member realizes, thus should convexity 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 second position of rotation at interval.Particularly, this second position of rotation extends to terminal location from the first rotation centre position (Drehzwischenstellung) at interval.Therefore particularly; The whole possibility that rotatablely moves through parts forms two zones in other words, two position of rotation intervals; Basis wherein: that which zone just is arranged in electronic switch and detect by this switch, can identify: whether can close the door of opening fully.

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

Preferably, the length of the position of rotation of spirality cam working face combination at interval draws around a turn over of the longitudinal axis of cam member.So the rotation possibility that cam member centers on its rotation is preferably corresponding to unique turn over.Through this design scheme, can realize with particularly advantageous mode: the complete rectilinear motion about gate stop need not too fast rotatablely moving, thereby can prevent that transmitting element is from the cam working face slippage.Through this design scheme, wearing and tearing are kept in addition especially less, and guarantee special guiding and the motion stably of gate stop.

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

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

Particularly only gate stop is arranged on the door, and other arrangements of components of door opening device the family expenses utensil originally on one's body, and be not arranged on the door.Preferably, be not arranged in arrangements of components on the door on the blocking mechanism of the bottom of family expenses utensil to be used for opening and closing door.Particularly especially can remove the Interlock Status between gate stop and door latch through the rectilinear motion of gate stop when opening.

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

Preferably, the door gear that is used for home appliances comprises door, and said door has the first vertical longitudinal side, at least one build-up member (Anschlagelement) preferably can be installed on this first vertical longitudinal side be used to make door to be parallel to the longitudinal side swing.In addition, door comprises and first longitudinal side opposed second vertical longitudinal side and the upper side that between said longitudinal side, extends.In addition, door gear also comprises the door opening device that is used for automatically opening door.Regulation: on second longitudinal side, construct handle element and/or on upper side, construct handle element; 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 said or a grip elements place; And door gear comprises control module, and this control module is designed to come the control gate device for opening according to the information of identification sensor.Door gear also is set, and wherein door particularly is designed for side direction assembling (Anschlagen), thereby door can be around vertical longitudinal line of movement to be used for opening and closing.In addition, in very special location, handle element is not placed on the front, but structure space is minimized and save in the design scheme in space and be placed on the second vertical longitudinal side and/or on upper side to a certain extent.Because door has certain thickness, this second longitudinal side is suitable for ccontaining handle element with relevant therewith thickness, thereby can not change the thickness of door relatively owing to handle element therewith.Therefore, longitudinal side is such face, and its thickness through door forms and extends back from the front.In addition, can also prevent in this special location on the longitudinal side through handle element: the people runs on the handle element, as raising forward from the front or similarly the situation during 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, that originally be provided with and open intuitively and grasping aspect, this being placed in intuitively guides the user to a certain extent to correct position.Can also realize a kind of design scheme through following manner: promptly; Handle element is designed to utilize finger to carry out grasping clearly; Grasping or the slip (Entlanggleiten) that in this design scheme, can avoid utilizing finger or hand on other part of door, not to expect, thus door can be prevented because staff is made dirty.Particularly; Also can realize very (ergonomisch), the adaptive grasping possibility of ergonomics through this clear and definite handle element; Its anti-sliding stop or similar behavior; Thereby correspondingly guarantee the design scheme that is fit to for the user therewith, it is used for after opening automatically, further being opened safely and moving door by the user.In particularly advantageous design scheme, be provided with at least one identification sensor; Through the very apace and as soon as possible identification contact of this identification sensor, grasping or contactlessly arrive the finger of handle element at least nearby in the zone; Thereby detect user's the hope of opening very fast and ahead of time, and therefore also can be obviously control gate device for opening more quickly.Automatically the reaction time of door opening device can obviously shorten thus, and foreshortens to less than 0.5 second open the time.

Preferably, handle element is configured to firm parts, its Construction integration.Especially regulation, handle element fixed-site ground and therefore can not being arranged on second longitudinal side and/or the upper side to the motion of phase opposite house.Therefore be not provided with, handle element makes certain opening mechanism running through the relative motion property with respect to door.Therefore handle element only is used for grasping.Preferably, structure crack portion arranges handle element therein on second longitudinal side of door and/or upper side.That layout through the sedimentation of this part at least can realize saving the space and the minimized design scheme of structure space.Can settle on mechanically stable ground thus on the other hand.

Preferably, said handle element is the lath of straight line especially, and said lath has the zone of action, does not particularly have the groove of corner angle accordingly with grip recess.The particularly ergonomic moulding of this design scheme, it allows especially easily with finger grip, expends through less power and after opening automatically, manually continues to open door.Therefore also can prevent sliding stop at this, and owing to the design scheme of no corner angle is avoided injuring or hanging above that.Particularly, form enough grip area through more shallow recess through this design scheme.

Preferably, design longlyer towards the positive trough rim of door than the trough rim that deviates from a front.Through 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 bigger zone on the one hand, people can utilize said zone to enter into grip area with finger, have also improved the accessibility to grip area at this thus.On the other hand, can also reduce to deviate from the structure space degree of depth on the side in a front at this, thereby can avoid the collision of not expecting on other parts of family expenses utensil.

When the top view door, said handle element preferred arrangements hides after the front panel of door and through front panel.This is the layout that receives special protection, thereby also can avoid bumping against above that, and can avoid the wearing and tearing of not expecting or the infringement of handle element in addition.Particularly also can consider high-quality requirement and designing requirement thus, because when top view, can't see handle element.

Preferably, at least one identification sensor capacitance type sensor preferably.This sensor can detect in surveyed area or at handle element on one's body finger originally very apace, and on function formation relatively securely.

Preferably in door after handle element, especially at least one electrode of after the zone of action, arranging capacitance type sensor on the handle element.Can realize especially accurately thus and detection especially sensitively.This special local positioning through electrode also provides and receives highly to protect and wear and tear few position in addition.Particularly can also, realize interference-free replacing or the maintenance purpose of simple accessibility when removing the arrangement of handle element on longitudinal side to be used for electrode through this position.

Preferably, said handle element is processed by non-conducting material in the zone of identification sensor at least.

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

Particularly, said automatic door opening device has the insurance for children device.This is particularly advantageous because when children's grasping is in handle element, can avoid thus the door do not expect open automatically.Exactly in the family expenses utensil, in for example baking box or the similar appliances, it has higher relatively temperature in the baking chamber when operation, the baking chamber utilizes the door sealing, therefore can realize the high safety level for children.

Preferably, said 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 the door through operating means has realized the design scheme of favourable compactness and the layout that is fit to for the user again, and it can be clearly and be approaching at any time.

Stipulate that particularly preferably said insurance for children device can pass through operating means, activated and deexcitation by control module Electronic Control ground.Therefore can be fast and handle the insurance for children device reliably.This operating means can have display unit in addition, can show different information for the user through this display unit.Being integrated in the door equally and particularly being configured on the front panel through the display unit with operating means, is good especially for user's visuality.Therefore in this respect, the indication of the insurance for children device of activation or deexcitation can be discerned by the adult just fast and reliably.

Preferably, said door opening device can also be handled through operating means.Through the design scheme of this redundancy, door can be opened through operating means under following situation: through handle element open that possibility lost efficacy or can not be approaching without restriction.

Under following situation, be particularly advantageous: two home appliances with this door opening device are location abreast directly, and two each other towards vertical longitudinal side next-door neighbour each other basically.

Preferably, the activation through control module of door opening device, particularly motor is relevant with following manner: promptly, discern 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 detection of electrons ground identification door of closing and/or door opening device.Can also improve the safety measure aspect not expecting to open thus.

Door is manual unlocking momentarily.Also can when outage, realize opening reliably and can avoiding the 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 be provided with relatively therewith, this can dispose through operating means and the executive component of attaching troops to a unit.Therefore also can regulate uniquely, handle automatic door opening device through which kind of possibility of two kinds of possibilities for the user.Also can obviously improve user availability (Kundennutzen) thus.

Correspondingly construct the control module of door gear therewith relatively, and the configuration of can storing therein regulating by the user uniquely, make its change again up in case of necessity.

Preferably; The door opening device of said door gear has gate stop; This gate stop is arranged on the 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 the drive unit side to come release to be used to open door.Handle gate stop through straight line, open and very reliably and not block or the realization of wedging ground.Because door latch promptly, is implemented straight line and rotatablely moved being more complicated aspect its motion, the effect when door is opened on door latch is more complicated.Through can obviously reduce the easy fault property (Fehleranf lligkeit) of automatic door opening device in gate stop and the effect on 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 regarded 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 description of drawings.The characteristic of front described in describe and characteristic combination and below make up in accompanying drawing characteristic and characteristic described in describing and/or that illustrate separately in the accompanying drawings; Not only can in the combination that provides, use without departing from the scope of the invention, and can be in other combination or use separately.

Set forth embodiments of the invention in detail by sketch map below.Accompanying drawing illustrates:

Fig. 1 shows the phantom drawing that has the home appliances of the door of opening according to 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 of door in the zone of handle element according to Fig. 1,

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

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

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

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

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

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

In Fig. 2, handle element 9 is shown with phantom drawing.Said handle element is the straight line grooved rail that one constitutes, and said straight line grooved rail has the zone of action 16.This zone of action is designed to not have the grip recess or the groove of corner angle, and the trough rim 17 that wherein is parallel to each other and 18 limits the grip recess or the zone of action 16.Therewith relatively, handle element 9 is asymmetricly constructed, because extend forward further in other words away from the trough rim 17 of front panel 10 is longer towards trough rim 18 ratios of front panel 10.

The sectional drawing of secant III/III in Fig. 1 is shown with sketch map in Fig. 3.Can find out that handle element 9 is integrated in the crack portion 19 of door 6.Therefore handle element 9 is integrated in the door 6 and sedimentation ground structure to a certain extent.At least one electrode 20 of structure capacitance type sensor on the back side of handle element 9, this sensor is an identification sensor.Discern by means of identification sensor, whether finger 21 extends in the surveyed area 22 of exemplary qualification by a dotted line, and/or points 21 contact handle elements 9 as shown in Figure 3 whether.Electrode 20 additionally or the position of the back shown in substituting can also be arranged on the handle element 9 or be integrated in the door 6.

The information of identification sensor is transferred to control module 23 (Fig. 1); Said control module can be arranged in the door 6 or on other position in housing 2; Wherein control module 23 comes the control gate device for opening according to the information of identification sensor, opens door 6 automatically by said door opening device.

If identify; One or more fingers 21 are positioned at surveyed area 22 or a finger 21 contacts with handle element 9; Then when contact handle element 9, identify at the latest relatively therewith; The hope of opening that has the user, and can react to this very apace through control module relatively therewith, and the trigger gate device for opening.

It can also be seen that in this external view that front panel 10 extends so far away on the x direction, make front panel the same long with the seamed edge 18 of handle element 9 at least according to Fig. 3.The door of also closing in top view when top view baking box 1 and thus thus 6 o'clock, handle element 9 is hidden by front panel 10.

Handle element 9 fixed-site and therefore can not being positioned on the door to relative motion with respect to door 6.Handle element 9 is furnished with especially therein in the zone of one or more electrodes 20 and is processed by the material that can not conduct electricity.

Handle element 9 that can be through being used for automatically opening door or additionally handle baking box 1 through operating means 12 in addition,

operating buttons

14 or 15 for example wherein is so that trigger automatic door opening device.Through this design scheme, the user also can dispose as required individually as follows: whether should realize the activation and the triggering of automatic device for opening through handle element 9 or through operating means 12.

Preferred regulation when contact handle element 9, when door 6 is closed and when the heating operation (Pyrolysebetrieb) of baking box 1 when no longer activating, just can trigger CD-ROM drive motor to be used for opening automatically 6.Preferred regulation, when door was just opened originally, CD-ROM drive motor did not activate.Therewith relatively, when holding handle element 9, perhaps close door 6, said CD-ROM drive motor deexcitation in order further to open door.

Especially also stipulate that baking box 1 has the insurance for children device, this insurance for children device can activate and deexcitations through operating means 12.If activate the insurance for children device; Then can not in the closed condition of door 6, automatically realize the triggering of door opening device through grasps handle element 9, and can not be through the simple activation of

manipulation operations element

14 or 15 realization automatic door device for opening triggerings simply.Have only when children's safeties deexcitation again; Perhaps when the operation of the special further Multiple Combination of implementing one or more

executive components

14 and 15 with special mode and method, when for example handling, could when connecting the insurance for children device, realize the triggering of automatic door device for opening.

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 the motor bracket 27.In addition, door opening device 24 comprises cam member 28, and said cam member is configured to hollow cylindrical and deviates from the cam working face 29 that has helical configuration on the end of motor 25 at it.Cam member 29 passes through vertical ball bearing or axially ball bearing 30 supportings with motor 25, utilizes said vertical ball bearing or axial ball bearing to avoid affacting the axial force on the driving shaft 26.

In addition, door opening device comprises electronic switch 31, and said electronic switch is arranged on the motor bracket 27.This switch 31 and cam member 28 arranged adjacent, wherein said switch are designed to detect the position of rotation of cam member 28 around rotation, and said rotation is equal to the axis of driving shaft 26.Transmitting element 32 engages (angreifend) or rolls (abrollend) on cam working face 29, said transmitting element is designed to ball bearing.This transmitting element 32 is connected with tappet 33 or is fixed thereon.Tappet 33 mechanically effectively is 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 in case of necessity other arrangements of components in the housing 36 of door opening device 24.The design scheme of this conception through door opening device 24; Can rotatablely moving of motor 25, especially driving shaft 26 be delivered on the cam member 28; Wherein owing to have the specially-shaped of the 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 first operating position this illustrate, i.e. the terminal location of cam member 28 wherein arrives the top of cam working face 29 like the view of transmitting element 32 and Fig. 4.

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

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

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

Local I in the amplification shown in Fig. 4 has been shown in Fig. 7.At this, this view rotates with respect to the view among Fig. 4 slightly.Not only can see the switch 31 on motor bracket 27, but also can see specific position with respect to cam member 28.Cam member 28 can be around its longitudinal axis C rotation through connecting with driving shaft 26, wherein only implements the turn over around axis C between home position and the terminal location in other words at initial position.Structural salient 39 on the shell face 38 of cam member 28.From beginning at the initial position shown in Fig. 7, protruding 39 extend to end 40 along circumferential direction.This end 40 also defines first position of rotation end at interval, and it extends to the rotation centre position that limits through end 40 from initial position.This zone or this position of rotation illustrate between the line of only exemplarily describing at interval, and said line is not shown and only show first position of rotation border and then angular extensions alpha at interval in the embodiment of reality.In expression first position of rotation angular extensions alpha at interval, switch 31 can detect this position exactly through following manner: promptly said switch surveys protruding 39.As long as cam member 28 is positioned at first position of rotation inside at 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 door 6 again fully.If cam member 28 be arranged in first position of rotation at interval beyond and therefore be located at the position of rotation between the terminal location (second position of rotation interval) of rotation centre position and cam member 28 of place, end beginning of angular extensions alpha, then can not close door fully.Motor 25 places its zero-bit then, and this discerns through cam member 28 and switch 31 again.Can avoid cam member 28 and motor 25 to rotate too far or rotate very little thus.Through the at interval inner cam member 28 of first position of rotation with prevented this connection of motor 25: transmitting element 32 touches on the cam working face 29 prematurely when the direction of cam member 28 is moved and can not further move when door 6 is closed and then at gate stop 34.Significantly less than the part section (Teilausschnitt) of cam working face 29, second position of rotation is the said part section of extend through at interval in first position of rotation interval that characterizes through angular extensions alpha for the length of cam working face 29.

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

In fact switch 31 is connected through protruding 39, and discerns this first position of rotation thus at interval.When motor received the information about the for example porch of switch 31, motor 25 stopped.The angle position of switch 31 identification cam members 28.For example when door is gone up and when by mistake opening automatically, in order to stop motor 25 apace, make motor 25 short circuits because the user blocks or leans against.

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 convexities

40 ends

41 upper sides

A, B, C axis

The α angular range

Claims

1. the door opening device that is used for home appliances (1); Said door opening device is designed to automatically open the door (6) of said home appliances (1) and has CD-ROM drive motor (25); Said CD-ROM drive motor mechanically connects with gate stop (34) through operating means; It is characterized in that; Said CD-ROM drive motor (25) connects with the cam member (28) of said operating means, and said cam member has spiral cam working face (29), the transmitting element (32) of the said operating means that on said cam working face, reclines; Said transmitting element connects with said gate stop (35), and can utilize said transmitting element that the motion of said cam member (28) is delivered on the gate stop (34).

2. by the described door opening device of claim 1; It is characterized in that; Said cam member (28) can be through said CD-ROM drive motor (25) around its longitudinal axis (C) rotation; And rotatablely moving converts rectilinear motion to through said spiral cam working face (29), makes said gate stop (34) rectilinear motion to be used to open said door (6) through said rectilinear motion.

3. by claim 1 or 2 described door opening devices, it is characterized in that the position of rotation of said cam member (28) can detect through switch (31).

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

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

6. by claim 4 or 5 described door opening devices; It is characterized in that; Go up structural salient (39) at the lateral surface (38) of said cam member (28), the switch (31) of the position of rotation that said convexity can be through being used to discern said cam member (28) detects.

7. by each described door opening device in the claim 3 to 6; It is characterized in that; Said cam member (28) has second position of rotation interval that is directly connected on said first position of rotation interval; Close possibility completely what said second position of rotation prevented said door (6) at interval, and the terminal location that said second position of rotation is extended down to said cam member (28) at interval is to be used to open said door (6).

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

9. by each described door opening device in the claim 3 to 8; It is characterized in that; Itself enter into terminal location and enter into home position from terminal location from home position in order to shift said cam member (28) and to make, said CD-ROM drive motor (25) only can rotate along a direction of rotation.

10. by each described door opening device in the aforesaid right requirement, it is characterized in that said transmitting element (32) comprises ball bearing.

11., it is characterized in that assembling of said door (6) side direction and ability upright axis line (A) rotation are to be used for opening and closing by each described door opening device in the aforesaid right requirement.

12., it is characterized in that only said gate stop (34) is arranged on the said door (6), and other arrangements of components of said door opening device (24) is on said home appliances (1) by each described door opening device in the aforesaid right requirement.

13. by the described door opening device of claim 12, it is characterized in that, be not arranged in arrangements of components on the said door (6) on the bottom blocking mechanism of said home appliances (1) to be used to open and close said door (6).

14. by each described door opening device in the aforesaid right requirement, it is characterized in that, can remove the Interlock Status between said gate stop (34) and door latch (35) through the rectilinear motion of said gate stop (34) when opening said door (6).

15. especially for the home appliances of cooking food, especially baking box (1), it has door (6) and by each described door opening device (24) in the aforesaid right requirement.