EP2558786B1 - Door for a household cooking appliance, in particular an oven - Google Patents
Door for a household cooking appliance, in particular an oven Download PDFInfo
- Publication number
- EP2558786B1 EP2558786B1 EP11718786.4A EP11718786A EP2558786B1 EP 2558786 B1 EP2558786 B1 EP 2558786B1 EP 11718786 A EP11718786 A EP 11718786A EP 2558786 B1 EP2558786 B1 EP 2558786B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- handle body
- supporting body
- handle
- door
- door according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000010411 cooking Methods 0.000 title claims description 13
- 230000007246 mechanism Effects 0.000 claims description 37
- 239000011521 glass Substances 0.000 claims description 5
- 239000012815 thermoplastic material Substances 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000000465 moulding Methods 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
- 239000005341 toughened glass Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B1/00—Knobs or handles for wings; Knobs, handles, or press buttons for locks or latches on wings
- E05B1/0015—Knobs or handles which do not operate the bolt or lock, e.g. non-movable; Mounting thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/02—Doors specially adapted for stoves or ranges
- F24C15/024—Handles
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B1/00—Knobs or handles for wings; Knobs, handles, or press buttons for locks or latches on wings
- E05B1/0015—Knobs or handles which do not operate the bolt or lock, e.g. non-movable; Mounting thereof
- E05B2001/0023—Knobs or handles which do not operate the bolt or lock, e.g. non-movable; Mounting thereof being movable into a non-operating position, e.g. foldable towards the mounting plane
Definitions
- the present invention relates to a door for a household cooking appliance, in particular an oven. More in particular, the invention relates to a door of this sort having a concealed handle device, provided with a mechanism of a push-push type.
- These known handle devices basically comprise a handle body, which is hinged to a corresponding supporting structure so as to turn about an axis generally parallel to the axis of rotation of the door.
- the push-push mechanism Associated to the handle device is the push-push mechanism, which is able to assume a locking condition and a release condition.
- the handle body In the locking condition of the mechanism, the handle body is substantially flush with the front surface of the door.
- the push-push mechanism occurs, and hence passage thereof to the release condition, which enables the handle body to assume a respective open condition: in said condition, the handle body can be gripped by a user of the household appliance with his or her hand, in order to open the door.
- the handle devices provided with a push-push mechanism are in general complex from a constructional standpoint, as well as relatively problematical and expensive to assemble and install. Said devices of a known type prove moreover far from suited for applications in which the handle body must extend almost the whole width of the door.
- the object of the present invention is basically to overcome one or more of the aforesaid drawbacks, and in particular to provide a door for a household cooking appliance, in particular an oven, provided with a handle device that is simple and inexpensive to produce, reliable in operation, and extremely simplified to install.
- a further object of the invention is to provide a door of the above sort in which the handle device extends almost throughout the whole width of the door, at the same time guaranteeing a precise and reliable operation.
- references to "an embodiment” or “one embodiment” in the framework of this description is meant to indicate that a particular configuration, structure, or characteristic described in relation to the embodiment is comprised in at least one embodiment.
- phrases such as “in an embodiment” or “in one embodiment” and the like that may be present in different points of this description do not necessarily all refer to one and the same embodiment.
- the particular configurations, structures, or characteristics can be combined in any adequate way in one or more embodiments.
- the references used in what follows are only provided for convenience and do not define the sphere of protection or the scope of the embodiments.
- FIG. 1 designated as a whole by 1 is a door for a household cooking appliance according to the present invention.
- the door 1 is provided at the opening of a cooking chamber or muffle of a domestic oven.
- the door is hinged in a bottom region thereof to the structure of the oven so as to turn about a substantially horizontal axis.
- the door 1 comprises a door frame, designated as a whole by 2, which has a structure that comprises two vertical sides 3 and 4, connected at the respective ends via two transverse elements 5 and 6.
- the frame 2 substantially defines a mounting frame for a closing panel, designated as a whole by 7.
- the panel 7, which is preferably a panel made of tempered glass, is fixed to the frame 2.
- the frame 2 has a body made of plastic material to which the glass panel 7 is fixed via gluing.
- a handle device Associated to the frame 2, in an upper part thereof, is a handle device, designated as a whole by 10 in Figure 5 .
- the handle device 10 comprises a supporting body, designated as a whole by 20, which is to be mounted on the frame 2 above the panel 6.
- the handle device 10 further comprises a handle body, designated as a whole by 30, which is mounted movable on the supporting body 20 in order to be able to assume a closed position and an open position.
- the handle body 30 projects from a front plane of the door, for example the plane defined by the front surface of the panel 6, so that it can be gripped by a user.
- Shown, instead, in Figures 3 and 4 is the closed position of the handle body 30, in which the body itself cannot be gripped.
- a corresponding covering panel is applied, designated by 40.
- this panel 40 is made of glass and, in the closed condition of the handle body 30, the panel 40 is substantially flush with the panel 6, as may be clearly appreciated, for example, from Figure 4 .
- the handle device 10 comprises a catch mechanism, described hereinafter, substantially of a push-push type, i.e., one that can be switched between respective conditions of locking and release via a slight pressure of the handle body 30 towards the respective closed position.
- the device 10 moreover includes elastic means, described hereinafter, mounted so as to bias the handle body 30 constantly towards the respective open position.
- the handle body 30 has, in the rear face thereof, i.e., its own face generally facing the supporting body 20, at least one contrast element, designated by 31 in Figures 9 , 10 , 14, 16 and 17 .
- the contrast element 31 is substantially configured as a projection projecting from the aforesaid rear face of the handle body 30.
- the projection that provides the contrast element 31 is made integrally in the body itself, which is preferably made of a single piece of thermoplastic material obtained by moulding.
- the contrast element 31 has a head 31a generally enlarged with respect to a corresponding stem. In the example illustrated, this head 31a includes two opposite inclined surfaces.
- the supporting body 20 has, in its own front face, i.e., its own face generally facing the handle body 30, at least one seat for receiving a catch mechanism of a push-push type.
- the aforesaid seat designated as a whole by 21 for example in Figures 8 , 12 and 13 , is designed to receive the casing of a respective catch mechanism, designated in the aforesaid figures by 22.
- the seat 21 is defined integrally in the supporting body 20, which is preferably also made of a single piece of moulded thermoplastic material.
- the casing of the mechanism 22 is designated by 23.
- the casing 23 of the mechanism 22 and the corresponding receiving seat 21 are configured for mutual engagement, in particular a snap-action engagement.
- the casing 23 has, on two opposite walls, a respective engagement tooth, only one of which is visible, designated by 23a, designed to engage in a corresponding slit 21a - see Figure 8 - made in a homologous wall of the seat 21.
- the casing 23 has a generally parallelepipedal shape, open at the front end and closed at the rear end, and the seat 21 has a respective cavity having a cross section substantially complementary to the cross section of the casing 23.
- the shape of the casing 23 and of the seat 21 may be different from the one exemplified, it being understood that, preferentially, the type of engagement between the two parts in question is an engagement of a fast-coupling type.
- the catch mechanism 22 includes a pair of arms 22a, generally shaped like a jaw, preferably projecting from the front from the casing 23.
- the arms 22a are mounted with respect to the corresponding casing 23 in such a way that, in the release condition of the mechanism 22, the arms themselves are in a wide apart configuration, so as to be able to receive freely the head 31a of the corresponding contrast element 31 between them; in the locking condition of the mechanism 22, the arms 22a are, instead, in a generally mutually approached condition, adapted for withholding the head 31a of the contrast element 31 between them.
- the mechanism 22 also comprises a movable body 22b, partially housed within the casing 23 in such a way that its front part is accessible on the front of the casing itself.
- the movable body 22b is biased by an elastic element (not visible) towards the outside of the casing 23, or in any case into a position such that the top of the head 31a of the contrast element 31 can press thereon.
- the movable body 22b basically has the function of controlling approach or recession in rotation of the two arms 22a.
- the two contrast elements 31 and the two seats 21 are preferably defined in opposite lateral regions of the handle body 30 and of the supporting body 20, respectively.
- This arrangement guarantees a good balance in engagement and a good alignment of the handle body 30, when it assumes the respective closed position.
- the presence of a pair of mechanisms 22 is particularly useful in those embodiments in which, as in the case exemplified here, the concealed handle of a door for an electrical household cooking appliance - i.e., the supporting body 20 and the handle body 30 - have a length at least equal to the minimum distance between the two vertical sides 3 and 4 of the door frame 2.
- the handle device has as a whole a length substantially equal to the width of the panel 7.
- the front face of the supporting body 20 includes at least one generally hollow region, open at the front, and it is within this portion that a corresponding seat 21 is defined.
- the position of the mechanism 22 is generally set back with respect to the general plane of the handle body 30 when it is in the closed position, and this enables, in a simple way, the body itself to be "hidden away” in said position; i.e., the panel 40 is substantially flush with the panel 7.
- the front face of the supporting body 20 includes a main wall 24, which is substantially plane and extends between two generally hollow regions, designated by 25. These two hollow regions 25 have a respective end wall 25a (see, for example, Figures 8 and 11 ) that is in a position generally set back with respect to the wall 24. Defined in each hollow region 25 is a respective seat 21.
- the seats 21 are formed integrally with the end wall 25a, but other embodiments are evidently possible. In any case, preferably, the seats 21 are in a position set back with respect to the front surface of the main wall 24, for the reason previously explained.
- the handle body 30 is hinged to the supporting body 20 so as to turn about a respective axis of rotation, not indicated.
- the axis of rotation of the handle body 30 is substantially parallel to the axis of rotation of the door 1, the frame 2 of which - as has been said - is hinged in a bottom region of its own, with means in themselves known, to the body of the cooking appliance (here not represented).
- each hollow region 25 is delimited laterally by an outer wall 25b of the supporting body 20.
- This wall 25b is preferentially generally perpendicular to the main wall 24, and formed therein is a through hole 26 for receiving a respective pin 27 for rotation of the handle body 30.
- the handle body 30 has also two opposite side walls, designated by 32, which are generally perpendicular to the front face of the body 30, which is substantially plane, designated by 30a.
- a substantially cylindrical hollow housing open towards the external part of the body 30, designated by 33 for example in Figures 7 , 9 and 12 .
- a bushing 34 (just one of which is represented) is designed to be received, having a respective axial cavity 34a in which a respective rotation pin 27 is partially inserted.
- the bushing 34 is preferentially made of a resilient material and basically has the function of exerting friction on the movement of rotation of the handle body 20, in particular when this passes from the closed position to the open position, under the action of the elastic means described hereinafter.
- the handle device 10 has means constituting an end-of-travel for the movement of opening of the handle body.
- a projection 35 is provided, generally projecting towards the supporting body 20.
- the projection 35, or else each projection 35 has at the end a respective stop element 35a, projecting from the corresponding projection 35 in a direction substantially perpendicular with respect to the wall 32 of the handle body 30.
- a slit is formed, designated as a whole by 28 for example in Figures 8 and 11 .
- the side walls 32 of the former are generally parallel to the outer walls 25b of the latter, with the stop elements 35a that are constrained in a movable way within a corresponding slit 28, i.e., in such a way as to enable the movement of rotation of the handle body 30 with respect to the supporting body 30 about the hinge axis determined by the pins 27.
- the stop element 35a is able to co-operate at least with the end of the slit 28 facing the handle body 30, in order to determine a mechanical end-of-travel of the latter in its open position.
- at least one of the projection 35 is elastically deformable, in order to enable insertion of the corresponding stop element 35a within the corresponding slit 28.
- the aforesaid end-of-travel means comprise a plurality of teeth or projections in relief, defined in an upper region of the body 30, preferably in an intermediate position with respect to the housings 33, said teeth or projections in relief coming into contrast with the upper edge of the supporting body 20 when the body 30 is in its position of complete opening.
- the main wall 24 of the supporting body 20 integrally defines housing means for the elastic means that constantly bias the handle body 30 towards the respective open position.
- housing means for the elastic means that constantly bias the handle body 30 towards the respective open position.
- Each housing 29 is configured such that the corresponding spring 50 is constrained inside it so as to extend axially substantially in the same direction as the axis of rotation of the handle body 30.
- the spring 50 has an end 50a designed to come into contrast with the supporting body 20, whilst the other end 50b is designed to come into contrast with the handle body 30.
- a slidable point of constraint for the end 50b of the spring 50 may, for example, be obtained via two small vertical walls, designated by 51 in Figure 16 , which extend parallel to define between them a space for receiving and guiding the end 50b of the spring 50.
- a corresponding covering panel 40 fixed to the front face of the handle body 30, in particular via gluing, is a corresponding covering panel 40.
- This panel 40 which is clearly visible for example in Figures 7 and 9 , has a generally narrow and elongated configuration, and is conveniently made of glass, so as to be homogeneous from a design point of view with the panel 7.
- both the supporting body 20 and the handle body 30 are entirely made of thermoplastic material and can be obtained via moulding.
- the aforesaid bodies have appropriate passages, necessary for positioning and movement of die slides forming part of the moulding equipment, for example necessary to form the possible undercut elements.
- the door frame 2 is made of plastic material.
- Figure 6 illustrates the face of the frame 2 generally facing the inside of the cooking appliance, i.e., the face opposite to the one partially visible in Figures 1-5 .
- holes are provided, designated by 2a, via which the supporting body 20 can be fixed to the frame 2 via threaded members, for example screws.
- the supporting body 20 has corresponding through holes, designated by 56 in Figures 11-13 .
- the solution according to the present invention is extremely advantageous in so far as it simplifies considerably and facilitates production of the handle device 10, and hence of the door 1 as a whole.
- the catch mechanisms 22 are configured as individual components, and are basically commercially available components. The fact that they can be mounted in corresponding seats 21 facilitates assembly of the handle device considerably, as compared to known solutions, and this advantage is further enhanced in the preferred case of a snap-action engagement of the casing 23 of the mechanisms in the corresponding seats 21.
- the seats 21 can be obtained integrally in the supporting body further simplifies production of the device, reducing the overall cost thereof. Similar considerations obviously apply in relation to the fact that other functional elements of the handle device 10 are preferentially obtained integrally in the body 20 or in the body 30, during the operations of moulding of the bodies themselves, such as the contrast elements 31, the end-of-travel means represented by the projection 35 and the slits 28, the housings 29 for the springs 50, etc.
- the solution illustrated, with two lateral contrast elements 31 and two seats 21 for respective mechanisms 22, is particularly advantageous in applications in which the handle body 20 extends for the most part of the width of the door, as, precisely, in the case exemplified. In this way, a precise engagement in the two opposite areas of the handle body 30 is guaranteed.
- the alignment and balancing of the handle body 30 is evidently enhanced also thanks to the fact that two distinct elastic elements are provided, represented by the springs 50.
- the assembling of the bodies 20 and 30 is extremely simple.
- the mechanisms 22 and constrained in the housings 29 are the corresponding springs 50.
- the bushings 34 are inserted in the corresponding housings 33.
- the bushings 34 have a peripheral relief (not visible in the figures), designed to engage in an axial groove (visible for example in Figure 12 , not indicated) defined in the housing 33 so as to prevent rotation of the bushings thereof.
- one or both of the projections 35 are deformed elastically in order to be able to insert the arrest elements 35a within the grooves 28.
- the rotation pins 27 are then driven with interference fit in the holes 26, care being taken that an axially extensive portion thereof is inserted in the axial passage 34a of the bushings 34.
- applied on the front surface 30a of the handle body 30 is the covering panel 40, for example via gluing.
- the supporting body 20 is then fixed to the front-upper part of the frame 2, exploiting the presence of the holes 2a of the frame and the holes 56 of the body 30.
- self-tapping screws can be used, which are screwed starting from the holes 2a, from the back of the frame 2, and are designed to form an internal screw within the holes 56.
- the body 20 could also be fixed to the frame 2 before coupling of the handle body 30 thereto, in which case the self-tapping screws may be screwed starting from the holes 56, from the front of the body 30, to form an internal screw within the holes 2a.
- handle body 30 is angularly movable with respect to the supporting body 30.
- the handle body could be mounted, by guide means, so as to slide linearly with respect to the supporting body, for example via guides made in the side walls, or else the top and bottom walls, of the supporting body and of the handle body.
- elastic means will be provided for biasing the handle body into the corresponding open position, these means possibly being for example represented by helical or leaf springs.
- contrast elements will be provided functionally similar to the ones previously designated by 31.
- the seats 21 for the mechanisms 22 will be made; also in an embodiment of this sort, preferentially, said seats will be in a position generally set back with respect to the position assumed by the rear face of the handle body when it is in the closed condition.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electric Ovens (AREA)
- Electric Stoves And Ranges (AREA)
Description
- The present invention relates to a door for a household cooking appliance, in particular an oven. More in particular, the invention relates to a door of this sort having a concealed handle device, provided with a mechanism of a push-push type.
- The use of hide-away or concealed handle devices on doors for household cooking appliances is widely known. In some solutions these devices are provided with a catch mechanism of a push-push type, i.e., a bistable mechanism, which can be switched between respective conditions of locking and release of a handle body by pressing the body itself towards a respective closed position.
- These known handle devices basically comprise a handle body, which is hinged to a corresponding supporting structure so as to turn about an axis generally parallel to the axis of rotation of the door. Associated to the handle device is the push-push mechanism, which is able to assume a locking condition and a release condition. In the locking condition of the mechanism, the handle body is substantially flush with the front surface of the door. By pressing the handle body slightly, switching of the push-push mechanism occurs, and hence passage thereof to the release condition, which enables the handle body to assume a respective open condition: in said condition, the handle body can be gripped by a user of the household appliance with his or her hand, in order to open the door.
- The handle devices provided with a push-push mechanism according to the known art are in general complex from a constructional standpoint, as well as relatively problematical and expensive to assemble and install. Said devices of a known type prove moreover far from suited for applications in which the handle body must extend almost the whole width of the door.
- Relevant prior art can be found in
DE4343976 andWO2009/116094 . - The object of the present invention is basically to overcome one or more of the aforesaid drawbacks, and in particular to provide a door for a household cooking appliance, in particular an oven, provided with a handle device that is simple and inexpensive to produce, reliable in operation, and extremely simplified to install. A further object of the invention is to provide a door of the above sort in which the handle device extends almost throughout the whole width of the door, at the same time guaranteeing a precise and reliable operation.
- The above and yet further purposes, which will emerge more clearly hereinafter, are achieved according to the present invention by a door for a household cooking appliance having the characteristics indicated in the annexed claims. The claims form an integral part of the technical teaching provided herein in relation to the invention.
- Further characteristics and advantages of the present invention will emerge clearly from the ensuing description, with reference to the annexed drawings, which are provided purely by way of non-limiting example and in which:
-
Figures 1 and 2 are a front view in elevation and a side view, respectively, of a door for a household cooking appliance according to the present invention, with a corresponding handle device in the open condition; -
Figures 3 and 4 are views similar to those ofFigures 1 and 2 , but with the handle device in the closed condition; -
Figure 5 is a partially exploded view of the door ofFigures 1-4 ; -
Figure 6 is a rear view in elevation of a frame of the door ofFigures 1-5 ; -
Figure 7 is an exploded view of a handle device of a door according to the invention, for example the door ofFigures 1-5 ; -
Figure 8 is an enlarged detail ofFigure 7 ; -
Figure 9 is a further exploded view of the handle device ofFigure 7 ; -
Figures 10 and 11 are enlarged details ofFigure 9 ; -
Figure 12 is a further partial exploded view of the handle device ofFigures 7 and9 ; -
Figure 13 is an enlarged detail ofFigure 12 ; -
Figures 14 and 15 are a rear view in elevation and a view from above, respectively, of a component of the handle device ofFigures 7 ,9 and12 ; -
Figure 16 is an enlarged detail ofFigure 14 ; and -
Figure 17 is a cross section, at an enlarged scale, according to the line XVII-XVII ofFigure 14 . - Reference to "an embodiment" or "one embodiment" in the framework of this description is meant to indicate that a particular configuration, structure, or characteristic described in relation to the embodiment is comprised in at least one embodiment. Hence, phrases such as "in an embodiment" or "in one embodiment" and the like that may be present in different points of this description do not necessarily all refer to one and the same embodiment. In addition, the particular configurations, structures, or characteristics can be combined in any adequate way in one or more embodiments. The references used in what follows are only provided for convenience and do not define the sphere of protection or the scope of the embodiments.
- In
Figures 1 to 4 , designated as a whole by 1 is a door for a household cooking appliance according to the present invention. In the sequel of the present description it is assumed that thedoor 1 is provided at the opening of a cooking chamber or muffle of a domestic oven. For this purpose the door is hinged in a bottom region thereof to the structure of the oven so as to turn about a substantially horizontal axis. - The
door 1 comprises a door frame, designated as a whole by 2, which has a structure that comprises twovertical sides transverse elements frame 2 substantially defines a mounting frame for a closing panel, designated as a whole by 7. Thepanel 7, which is preferably a panel made of tempered glass, is fixed to theframe 2. In one embodiment of the invention, theframe 2 has a body made of plastic material to which theglass panel 7 is fixed via gluing. Associated to theframe 2, in an upper part thereof, is a handle device, designated as a whole by 10 inFigure 5 . - As represented for example in
Figures 7 ,9 and12 , thehandle device 10 comprises a supporting body, designated as a whole by 20, which is to be mounted on theframe 2 above thepanel 6. Thehandle device 10 further comprises a handle body, designated as a whole by 30, which is mounted movable on the supportingbody 20 in order to be able to assume a closed position and an open position. In the open position, visible inFigures 1-2 , thehandle body 30 projects from a front plane of the door, for example the plane defined by the front surface of thepanel 6, so that it can be gripped by a user. Shown, instead, inFigures 3 and 4 is the closed position of thehandle body 30, in which the body itself cannot be gripped. As will emerge clearly hereinafter, in a preferred embodiment of the invention, as represented in the figures, at the front of thehandle body 30 a corresponding covering panel is applied, designated by 40. Preferably, also thispanel 40 is made of glass and, in the closed condition of thehandle body 30, thepanel 40 is substantially flush with thepanel 6, as may be clearly appreciated, for example, fromFigure 4 . - The
handle device 10 comprises a catch mechanism, described hereinafter, substantially of a push-push type, i.e., one that can be switched between respective conditions of locking and release via a slight pressure of thehandle body 30 towards the respective closed position. Thedevice 10 moreover includes elastic means, described hereinafter, mounted so as to bias thehandle body 30 constantly towards the respective open position. - According to a characteristic of the invention, the
handle body 30 has, in the rear face thereof, i.e., its own face generally facing the supportingbody 20, at least one contrast element, designated by 31 inFigures 9 ,10 ,14, 16 and 17 . Thecontrast element 31 is substantially configured as a projection projecting from the aforesaid rear face of thehandle body 30. In a particularly advantageous embodiment, the projection that provides thecontrast element 31 is made integrally in the body itself, which is preferably made of a single piece of thermoplastic material obtained by moulding. As may be seen inFigures 10 and17 , thecontrast element 31 has ahead 31a generally enlarged with respect to a corresponding stem. In the example illustrated, thishead 31a includes two opposite inclined surfaces. - Once again according to a characteristic of the invention, the supporting
body 20 has, in its own front face, i.e., its own face generally facing thehandle body 30, at least one seat for receiving a catch mechanism of a push-push type. - The aforesaid seat, designated as a whole by 21 for example in
Figures 8 ,12 and 13 , is designed to receive the casing of a respective catch mechanism, designated in the aforesaid figures by 22. In a preferred embodiment, theseat 21 is defined integrally in the supportingbody 20, which is preferably also made of a single piece of moulded thermoplastic material. InFigures 8 ,11 and13 the casing of themechanism 22 is designated by 23. - In a particularly advantageous embodiment, the
casing 23 of themechanism 22 and thecorresponding receiving seat 21 are configured for mutual engagement, in particular a snap-action engagement. In the case exemplified, thecasing 23 has, on two opposite walls, a respective engagement tooth, only one of which is visible, designated by 23a, designed to engage in acorresponding slit 21a - seeFigure 8 - made in a homologous wall of theseat 21. In the example of embodiment illustrated, thecasing 23 has a generally parallelepipedal shape, open at the front end and closed at the rear end, and theseat 21 has a respective cavity having a cross section substantially complementary to the cross section of thecasing 23. It will be appreciated, however, that, in possible alternative embodiments, the shape of thecasing 23 and of theseat 21 may be different from the one exemplified, it being understood that, preferentially, the type of engagement between the two parts in question is an engagement of a fast-coupling type. - Once again according to the invention, the
catch mechanism 22 includes a pair ofarms 22a, generally shaped like a jaw, preferably projecting from the front from thecasing 23. Thearms 22a are mounted with respect to the correspondingcasing 23 in such a way that, in the release condition of themechanism 22, the arms themselves are in a wide apart configuration, so as to be able to receive freely thehead 31a of thecorresponding contrast element 31 between them; in the locking condition of themechanism 22, thearms 22a are, instead, in a generally mutually approached condition, adapted for withholding thehead 31a of thecontrast element 31 between them. - In the embodiment exemplified, the
mechanism 22 also comprises amovable body 22b, partially housed within thecasing 23 in such a way that its front part is accessible on the front of the casing itself. Themovable body 22b is biased by an elastic element (not visible) towards the outside of thecasing 23, or in any case into a position such that the top of thehead 31a of thecontrast element 31 can press thereon. Themovable body 22b basically has the function of controlling approach or recession in rotation of the twoarms 22a. - Present inside the
casing 23 are the components of the bistable mechanism that enable the two aforesaid mutual positions of thearms 22a to be maintained. The practical modalities of implementation of the internal components of themechanism 22 do not fall within the purposes of the present invention. For this purpose, it is pointed out that mechanisms of a push-push type with jaw-like arms of the type indicated are generally known and that, for example, mechanisms that can be used for the purposes of implementation of the present invention can be of the type as those described inEP-A-477863 US-A-4,709, 949 . In a preferred embodiment of the invention, such as the one represented in the drawings, at least twocontrast elements 31, two receivingseats 21, and twocatch mechanisms 22 are provided. In this case, the twocontrast elements 31 and the twoseats 21 are preferably defined in opposite lateral regions of thehandle body 30 and of the supportingbody 20, respectively. This arrangement guarantees a good balance in engagement and a good alignment of thehandle body 30, when it assumes the respective closed position. The presence of a pair ofmechanisms 22 is particularly useful in those embodiments in which, as in the case exemplified here, the concealed handle of a door for an electrical household cooking appliance - i.e., the supportingbody 20 and the handle body 30 - have a length at least equal to the minimum distance between the twovertical sides door frame 2. As may be appreciated, in fact, for example fromFigures 1 and 3 , in a preferred embodiment of the present invention the handle device has as a whole a length substantially equal to the width of thepanel 7. - It is to be noted that a reverse arrangement of the components that enable the
handle body 30 to be kept in the respective closed position is possible, i.e., an arrangement in which thecontrast element 31, or thecontrast elements 31, are on the supportingbody 20, whereas theseat 21, or eachseat 21, for acorresponding mechanism 22 is in thehandle body 30. - In a preferred embodiment, the front face of the supporting
body 20 includes at least one generally hollow region, open at the front, and it is within this portion that acorresponding seat 21 is defined. In this way, the position of themechanism 22 is generally set back with respect to the general plane of thehandle body 30 when it is in the closed position, and this enables, in a simple way, the body itself to be "hidden away" in said position; i.e., thepanel 40 is substantially flush with thepanel 7. - In the preferred embodiment illustrated, and as may be seen for example in
Figures 7 ,8 ,12 and 13 , the front face of the supportingbody 20 includes amain wall 24, which is substantially plane and extends between two generally hollow regions, designated by 25. These twohollow regions 25 have arespective end wall 25a (see, for example,Figures 8 and11 ) that is in a position generally set back with respect to thewall 24. Defined in eachhollow region 25 is arespective seat 21. In the example, theseats 21 are formed integrally with theend wall 25a, but other embodiments are evidently possible. In any case, preferably, theseats 21 are in a position set back with respect to the front surface of themain wall 24, for the reason previously explained. - It should be noted that the presence of the
regions 25, with the correspondingrear walls 25a set back with respect to thewall 24 enables also limitation of the area of contact between thedevice 10 and theframe 2 of thedoor 1. In this way the transmission of heat from theframe 2 to thedevice 10 can be reduced. - In the embodiment exemplified, the
handle body 30 is hinged to the supportingbody 20 so as to turn about a respective axis of rotation, not indicated. Preferentially, the axis of rotation of thehandle body 30 is substantially parallel to the axis of rotation of thedoor 1, theframe 2 of which - as has been said - is hinged in a bottom region of its own, with means in themselves known, to the body of the cooking appliance (here not represented). - As may be seen in particular in
Figures 8 and13 , eachhollow region 25 is delimited laterally by anouter wall 25b of the supportingbody 20. Thiswall 25b is preferentially generally perpendicular to themain wall 24, and formed therein is a throughhole 26 for receiving arespective pin 27 for rotation of thehandle body 30. - Once again with reference to the embodiment exemplified, and as may be seen, for example, in
Figures 9 ,10 and12-13 , thehandle body 30 has also two opposite side walls, designated by 32, which are generally perpendicular to the front face of thebody 30, which is substantially plane, designated by 30a. - Defined in a position substantially corresponding to at least one of the
side walls 32, and preferably at both of them, is a substantially cylindrical hollow housing, open towards the external part of thebody 30, designated by 33 for example inFigures 7 ,9 and12 . Within thehousing 33 a bushing 34 (just one of which is represented) is designed to be received, having a respectiveaxial cavity 34a in which arespective rotation pin 27 is partially inserted. Thebushing 34 is preferentially made of a resilient material and basically has the function of exerting friction on the movement of rotation of thehandle body 20, in particular when this passes from the closed position to the open position, under the action of the elastic means described hereinafter. - In one embodiment, the
handle device 10 has means constituting an end-of-travel for the movement of opening of the handle body. - With reference to the non-limiting example illustrated, in
Figures 9 ,10 and12 it may be noted how, in at least one of theside walls 32, and preferably in both of thewalls 32, aprojection 35 is provided, generally projecting towards the supportingbody 20. Theprojection 35, or else eachprojection 35, has at the end arespective stop element 35a, projecting from the correspondingprojection 35 in a direction substantially perpendicular with respect to thewall 32 of thehandle body 30. On the other side, in thewall 25b of the supportingbody 20, or in each of them, a slit is formed, designated as a whole by 28 for example inFigures 8 and11 . - In the condition where the
handle body 30 is mounted on the supportingbody 20, theside walls 32 of the former are generally parallel to theouter walls 25b of the latter, with thestop elements 35a that are constrained in a movable way within acorresponding slit 28, i.e., in such a way as to enable the movement of rotation of thehandle body 30 with respect to the supportingbody 30 about the hinge axis determined by thepins 27. - As may be readily understood, the
stop element 35a, or else eachstop element 35a, is able to co-operate at least with the end of theslit 28 facing thehandle body 30, in order to determine a mechanical end-of-travel of the latter in its open position. In order to facilitate installation of thehandle body 30 on the supportingbody 20, at least one of theprojection 35 is elastically deformable, in order to enable insertion of thecorresponding stop element 35a within thecorresponding slit 28. - Of course mechanical means constituting an end-of-travel for the movement of opening of the
body 30 can be shaped differently. For example, in an alternative embodiment (not represented), the aforesaid end-of-travel means comprise a plurality of teeth or projections in relief, defined in an upper region of thebody 30, preferably in an intermediate position with respect to thehousings 33, said teeth or projections in relief coming into contrast with the upper edge of the supportingbody 20 when thebody 30 is in its position of complete opening. - In a preferred embodiment, the
main wall 24 of the supportingbody 20 integrally defines housing means for the elastic means that constantly bias thehandle body 30 towards the respective open position. In the exemplificative embodiment represented, for this purpose, defined in an upper part of thewall 24, in two opposite lateral regions of the wall itself, are twohousings 29, each designed to receive a respectivehelical spring 50. Eachhousing 29 is configured such that the correspondingspring 50 is constrained inside it so as to extend axially substantially in the same direction as the axis of rotation of thehandle body 30. As may be seen for example inFigure 12 , thespring 50 has anend 50a designed to come into contrast with the supportingbody 20, whilst theother end 50b is designed to come into contrast with thehandle body 30. For this purpose, conveniently, in the rear face of thehandle body 30 there can be defined a slidable point of constraint for theend 50b of thespring 50. One point of constraint may, for example, be obtained via two small vertical walls, designated by 51 inFigure 16 , which extend parallel to define between them a space for receiving and guiding theend 50b of thespring 50. - As has been explained previously, in a preferred embodiment of the invention, fixed to the front face of the
handle body 30, in particular via gluing, is acorresponding covering panel 40. Thispanel 40, which is clearly visible for example inFigures 7 and9 , has a generally narrow and elongated configuration, and is conveniently made of glass, so as to be homogeneous from a design point of view with thepanel 7. - In an advantageous embodiment, as has been said, both the supporting
body 20 and thehandle body 30 are entirely made of thermoplastic material and can be obtained via moulding. For this purpose it may be noted from the various Figures how the aforesaid bodies have appropriate passages, necessary for positioning and movement of die slides forming part of the moulding equipment, for example necessary to form the possible undercut elements. - As has been said, in a preferred version, also the
door frame 2 is made of plastic material.Figure 6 illustrates the face of theframe 2 generally facing the inside of the cooking appliance, i.e., the face opposite to the one partially visible inFigures 1-5 . In the upper part of theframe 2, substantially in the two upper corner regions, holes are provided, designated by 2a, via which the supportingbody 20 can be fixed to theframe 2 via threaded members, for example screws. For this purpose, the supportingbody 20 has corresponding through holes, designated by 56 inFigures 11-13 . - The solution according to the present invention is extremely advantageous in so far as it simplifies considerably and facilitates production of the
handle device 10, and hence of thedoor 1 as a whole. - The
catch mechanisms 22 are configured as individual components, and are basically commercially available components. The fact that they can be mounted in correspondingseats 21 facilitates assembly of the handle device considerably, as compared to known solutions, and this advantage is further enhanced in the preferred case of a snap-action engagement of thecasing 23 of the mechanisms in the correspondingseats 21. - The fact that the
seats 21 can be obtained integrally in the supporting body further simplifies production of the device, reducing the overall cost thereof. Similar considerations obviously apply in relation to the fact that other functional elements of thehandle device 10 are preferentially obtained integrally in thebody 20 or in thebody 30, during the operations of moulding of the bodies themselves, such as thecontrast elements 31, the end-of-travel means represented by theprojection 35 and theslits 28, thehousings 29 for thesprings 50, etc. - The solution illustrated, with two
lateral contrast elements 31 and twoseats 21 forrespective mechanisms 22, is particularly advantageous in applications in which thehandle body 20 extends for the most part of the width of the door, as, precisely, in the case exemplified. In this way, a precise engagement in the two opposite areas of thehandle body 30 is guaranteed. The alignment and balancing of thehandle body 30 is evidently enhanced also thanks to the fact that two distinct elastic elements are provided, represented by thesprings 50. - As may be readily understood, the assembling of the
bodies - Engaged within the
seats 21, via a simple thrust, are themechanisms 22 and constrained in thehousings 29 are the corresponding springs 50. Thebushings 34 are inserted in the correspondinghousings 33. Preferentially, thebushings 34 have a peripheral relief (not visible in the figures), designed to engage in an axial groove (visible for example inFigure 12 , not indicated) defined in thehousing 33 so as to prevent rotation of the bushings thereof. At this point, one or both of theprojections 35 are deformed elastically in order to be able to insert thearrest elements 35a within thegrooves 28. The rotation pins 27 are then driven with interference fit in theholes 26, care being taken that an axially extensive portion thereof is inserted in theaxial passage 34a of thebushings 34. As has been said, applied on thefront surface 30a of thehandle body 30 is the coveringpanel 40, for example via gluing. - The supporting
body 20 is then fixed to the front-upper part of theframe 2, exploiting the presence of theholes 2a of the frame and theholes 56 of thebody 30. In the case where thedevice 10 is fixed on theframe 2 only after being assembled, self-tapping screws can be used, which are screwed starting from theholes 2a, from the back of theframe 2, and are designed to form an internal screw within theholes 56. Obviously, thebody 20 could also be fixed to theframe 2 before coupling of thehandle body 30 thereto, in which case the self-tapping screws may be screwed starting from theholes 56, from the front of thebody 30, to form an internal screw within theholes 2a. - The invention has been described with reference to a configuration of
handle device 10 in which thehandle body 30 is angularly movable with respect to the supportingbody 30. It will be appreciated, however, that, in possible variant embodiments not represented, the handle body could be mounted, by guide means, so as to slide linearly with respect to the supporting body, for example via guides made in the side walls, or else the top and bottom walls, of the supporting body and of the handle body. Also in such an embodiment elastic means will be provided for biasing the handle body into the corresponding open position, these means possibly being for example represented by helical or leaf springs. Also in such an embodiment, in a rear face of the handle body, contrast elements will be provided functionally similar to the ones previously designated by 31. Likewise, on one face of the supporting body facing said rear face of the handle body theseats 21 for themechanisms 22 will be made; also in an embodiment of this sort, preferentially, said seats will be in a position generally set back with respect to the position assumed by the rear face of the handle body when it is in the closed condition.
Claims (15)
- A door for a cooking appliance, in particular an oven, having a door frame (2) with two vertical sides (3, 4) and two transverse sides (5, 6), there being fixed on the frame (2) a closing panel (7), in particular made of glass, the door further comprises a handle device (10), being associated to the frame (2), in an upper part thereof, comprising a supporting body (20), mounted on the frame (2) above the closing panel (7), and a handle body (30), mounted movable on the supporting body (20) such that it can assume a closed position, in which the handle body (30) cannot be gripped, and an open position, in which the handle body (30) can be gripped, the handle device (10) moreover including elastic means (50) for biasing the handle body (30) towards the open position, and at least one catch mechanism (22), which is substantially of a push-push type, i.e., prearranged to be switched between respective conditions of locking and release by pressing the handle body (30) towards the respective closed position, the door being characterized in that:- one of the supporting body (20) and the handle body (30) has, in a face thereof generally facing the other of the supporting body (20) and the handle body (30), at least one contrast element (31) projecting from the aforesaid face,- the other of the supporting body (20) and the handle body (30) has, in a face thereof generally facing the other of the supporting body (20) and the handle body (30), at least one seat (21) for receiving a casing (23) of the respective catch mechanism (22),- the catch mechanism (22) includes a pair of front arms (22a), generally jaw-shaped, mounted with respect to the corresponding casing (23) such that, in the locking condition of the mechanism (22), the arms (22a) are set close to one another so as to withhold between them a head (31a) of the contrast element (31) and, in the release condition of the mechanism (22), the arms (22a) are set at a distance apart so as not to withhold the head (31a) of the contrast element (31).
- The door according to Claim 1, wherein the seat (21) and the casing (23) are configured for mutual engagement, in particular a snap-action engagement.
- The door according to Claim 1 or Claim 2, wherein at least one of the contrast element (31) and the seat (21) is made integrally in the supporting body (20) or in the handle body (30).
- The door according to one of the preceding claims, comprising at least two said contrast elements (31), two said receiving seats (21), and two said catch mechanisms (22), the two contrast elements (31) and the two seats (21) being in opposite lateral regions of the corresponding supporting body (21) or handle body (31).
- The door according to any one of Claims 1 to 3, wherein said face of the supporting body (20) includes at least one generally hollow region (25), defined in the supporting body (20) and open on said face, there being defined in the hollow region (25) one said seat (21) for one said mechanism (22).
- The door according to Claims 4 and 5, wherein said face of the supporting body (20) includes a substantially plane main wall (24), which extends between two said generally hollow regions (25), there being defined in each hollow region (25) one said seat (21) for a respective said mechanism (22), each seat (21) being in a position set back with respect to the main wall (24).
- The door according to any one of Claims 1 to 3, wherein the handle body (30) is hinged to the supporting body (20) so as to turn about a respective axis of rotation.
- The door according to Claim 6 and 7, wherein each said hollow region (25) is delimited laterally by an outer wall (25b) of the supporting body (20) that is generally perpendicular to said main wall (24), there being made in said outer wall (25a) a hole (26) for receiving a respective pin (27) for rotation of the handle body (30) and wherein the handle body (30) has two opposite side walls (32), generally parallel to the outer walls (25b) of the supporting body (20), there being defined in a position substantially corresponding to at least one said side wall (32), or to each said side wall (32), a housing (33) for a bushing element (34) having an axial cavity (34a), at least partially inserted in which is a respective said rotation pin (27).
- The door according to any one of the preceding claims, wherein the handle device (10) has means constituting an end-of-travel for the handle body (30), wherein the end-of-travel means comprise a plurality of teeth or projections in relief, defined in an upper region of the handle body (30), which come into contrast with an upper edge of the supporting body (20) when the handle body (30) is in a position of complete opening.
- The door according to Claims 6, 7, and 9, wherein- each said hollow region (25) is delimited laterally by an outer wall (25b) of the supporting body (20) that is generally perpendicular to said main wall (24), there being formed in one said outer wall (25b), or in each said outer wall, a slit (28),- the handle body (30) has two opposite side walls (32), generally parallel to the outer walls (25b) of the supporting body (20), at least one said side wall (32) having a projection (35) generally projecting towards the supporting body (20), the projection (35), or each projection, having a stop element (35a) generally projecting from the corresponding projection (35) in a direction substantially perpendicular with respect to the corresponding side wall (32) of the handle body (30),and wherein, when in an installed condition the handle body (30), a respective said stop element (35a) is constrained in a movable way in the slit (28), or in each slit, the stop element (35a) being able to co-operate with an end of the corresponding slit (28) in order to determine a mechanical end-of-travel for the handle body (30), and wherein at least one said projection (35) is elastically deformable to enable insertion of the corresponding stop element (35a) in the corresponding slit (28).
- The door according to any one of the preceding claims, wherein fixed to a front part of the handle body (30) is a respective covering panel (40), in particular made of glass.
- The door according to any one of the preceding claims, wherein the supporting body (20) and the handle body (30) have a length at least equal to the minimum distance between the two vertical sides (3, 4) of the door frame (2).
- The door according to any one of the preceding claims, wherein the supporting body (20) is fixed with screws to the door frame (2).
- The door according to any one of the preceding claims, wherein the supporting body (20) and the handle body (30) and the door frame (2) are made of thermoplastic material.
- A household cooking appliance, in particular an oven, comprising a door according to one or more of Claims 1 to 14.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000063U ITTO20100063U1 (en) | 2010-04-12 | 2010-04-12 | DOOR FOR A DOMESTIC COOKING APPLIANCE, PARTICULARLY AN OVEN |
PCT/IB2011/051502 WO2011128817A1 (en) | 2010-04-12 | 2011-04-07 | Door for a household cooking appliance, in particular an oven |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2558786A1 EP2558786A1 (en) | 2013-02-20 |
EP2558786B1 true EP2558786B1 (en) | 2017-11-15 |
Family
ID=43735511
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11718786.4A Active EP2558786B1 (en) | 2010-04-12 | 2011-04-07 | Door for a household cooking appliance, in particular an oven |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2558786B1 (en) |
IT (1) | ITTO20100063U1 (en) |
WO (1) | WO2011128817A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN204901858U (en) * | 2012-09-20 | 2015-12-23 | 广东万和电气有限公司 | High temperature cooking equipment |
DE102016215652A1 (en) * | 2016-08-19 | 2018-02-22 | BSH Hausgeräte GmbH | Door for a household appliance with magnetically held plate-like handle, as well as household appliance with a corresponding door |
DE102016215651A1 (en) * | 2016-08-19 | 2018-02-22 | BSH Hausgeräte GmbH | Retractable door with a swiveling plate-like handle and household appliance |
CN111155836B (en) * | 2018-11-08 | 2022-02-25 | 广东美的厨房电器制造有限公司 | Oven and door body subassembly and handle subassembly thereof |
CN109750902B (en) * | 2018-12-27 | 2021-07-20 | 广东美的厨房电器制造有限公司 | Household appliance and door assembly thereof |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6011977U (en) | 1983-07-06 | 1985-01-26 | 株式会社 ニフコ | Latsuchi |
DE3935803A1 (en) * | 1989-10-27 | 1991-05-02 | Licentia Gmbh | Oven handle engageable with apertured glass front plate - has definite spring-loaded open and closed positions |
EP0477863B1 (en) | 1990-09-27 | 1997-11-12 | Nifco Inc. | Latch device |
DE4343976C2 (en) * | 1993-12-22 | 1998-02-12 | Bosch Siemens Hausgeraete | Retractable door handle |
WO2009116094A1 (en) * | 2008-03-18 | 2009-09-24 | Filippi S.R.L. | Oven with bottom-hinged door with no handle |
-
2010
- 2010-04-12 IT IT000063U patent/ITTO20100063U1/en unknown
-
2011
- 2011-04-07 WO PCT/IB2011/051502 patent/WO2011128817A1/en active Application Filing
- 2011-04-07 EP EP11718786.4A patent/EP2558786B1/en active Active
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
EP2558786A1 (en) | 2013-02-20 |
ITTO20100063U1 (en) | 2011-10-13 |
WO2011128817A1 (en) | 2011-10-20 |
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