WO2003047405A1 - Grille-pain electrique perfectionne - Google Patents
Grille-pain electrique perfectionne Download PDFInfo
- Publication number
- WO2003047405A1 WO2003047405A1 PCT/FR2002/004110 FR0204110W WO03047405A1 WO 2003047405 A1 WO2003047405 A1 WO 2003047405A1 FR 0204110 W FR0204110 W FR 0204110W WO 03047405 A1 WO03047405 A1 WO 03047405A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- carriage
- rotation
- axis
- toaster according
- rotary part
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J37/00—Baking; Roasting; Grilling; Frying
- A47J37/06—Roasters; Grills; Sandwich grills
- A47J37/08—Bread-toasters
- A47J37/0814—Bread-toasters with automatic bread ejection or timing means
Definitions
- the invention relates to the field of household appliances, and more precisely to cooking appliances of the electric toaster type. It relates more particularly to an improvement made to electric toasters with regard to the mechanism for slowing down the ascent of the bread carrier trolley.
- an electric toaster has a baking chamber inside which is placed a bread trolley on which the slices of toast are placed.
- This bread-carrying trolley can be moved to a position corresponding to the baking in which it is then held by appropriate locking means.
- the blocking means are deactivated, and return means, typically a spring, cause the movement of the carriage towards a position allowing the extraction of the toast.
- the objective of the invention is to propose a mechanism for slowing down the ascent of the bread carrier trolley which is mechanically simple, and relatively insensitive to the temperature differences generated during the operation of the toaster.
- the invention therefore relates to an electric toaster, of the known type comprising:
- a baking chamber provided with at least one bread introduction slot
- a bread trolley capable of moving inside the baking chamber
- blocking means capable of holding the carriage in a low position corresponding to cooking,.
- return means capable of causing the movement of the carriage towards a high position allowing the extraction of the toast, when the blocking means are inactive,
- a mechanism for regulating the rate of ascent of the bread-carrying trolley when the latter moves under the effect of the return means comprising a rotary part for deceleration capable of being rotated by the movement of the carriage relative to the cooking chamber.
- the toaster is characterized in that the rotary part comprises at least one projecting peripheral portion and / or notched forming an air brake, around the axis of rotation of said rotary part.
- This air brake portion is designed such that during the rotation of said part, the friction in the air of said peripheral portion (s) dissipates part of the kinetic energy of the carriage.
- the ascent of the carriage causes the rotation of a part which has one or more projecting portion (s) and / or notched peripheral (s) or wings which stir (s) the air in which it (s) bathes, thus dissipating, by the friction of the displaced air, part of the mechanical energy transmitted to the carriage by the return means, thus avoiding too sudden and accelerated ascent of the carriage and therefore bread toasted.
- the part comprises two projecting and / or indented peripheral portions forming an air brake, said portions being distributed angularly around the axis of rotation of the rotary part.
- the symmetry thus formed allows better stability of the rotating part.
- the speed regulation mechanism may comprise a set of geared pinions, one of which cooperates with a rack fixed relative to the cooking chamber, and one of which is secured to the rotary part, so as to cause the rotary part to move during the movement of the carriage, at a speed other than that of said carriage.
- the set of pinions or gears which is mounted in the cruise control mechanism moves with the carriage.
- this set of pinions is set in motion, and thus causes the characteristic part comprising the peripheral portion (s), source ( s) energy dissipation.
- the speed regulating mechanism is supported on the rack by means of a spring or a part having a spring effect, thus ensuring good transmission of the movement.
- Another drive mechanism than that of a rack can be envisaged, in particular the use of cables or ropes, one end of which is connected to the chassis of the toaster, and the other end of which is for example wound on a shaft. secured to one of the gables.
- the set of pinions or gears is dissociated from the carriage by being integral with the frame or the housing of the toaster. Transmission is then ensured by a belt, a chain or their equivalent, part of which is integral with the carriage, while another comprises notches or teeth meshing with the pinion / gears assembly.
- the speed regulation mechanism may include means disengaging the rotation of the air brake rotary part when the carriage moves in the direction of the position corresponding to cooking.
- the regulation mechanism may only be active in the bread exit phase, whereas it has no effect when the bread is introduced into the toaster and the carriage is lowered. Indeed, this downward movement of the carriage is generally caused by a movement of the user, and in certain cases, it may be advantageous to overcome the resistance to the downward movement which can be caused by the operation of the regulation mechanism of speed.
- the means for disengaging the rotation of the airbrake can be formed by a ratchet system associated with one of the pinions.
- the orientation of the pawl makes it possible to select the direction of movement during which the regulating device is active.
- declutching systems can be used, for example by means of a "idler” pinion meshing with a motor pinion.
- a "idler” pinion meshing with a motor pinion.
- said pinion then meshes with a pinion connected to the characteristic rotating part.
- the motor pinion rotates in the other direction, it tends to cause the "idle” pinion to rise, which then no longer drives the pinion connected to the characteristic rotating part.
- the axes of the pinions can also be mounted on a part articulated along an axis substantially parallel to the axes of the pinions, said part being oriented obliquely with respect to the direction of ascent of the carriage.
- the set of pinions comes, by gravity and or with the help of a spring, to engage on the rack, favoring the meshing during the ascent of the carriage and disengaging from the rack on the descent.
- the desired declutching effect can also be obtained by making mobile, in an oblong hole, elongated vertically, the pinion of the pinion meshing on the rack, said hole being produced in the parts for holding the axes of the pinions.
- At least one peripheral portion of the rotating part is connected to the axis of said part by one or more deformable portion (s), so that said peripheral portion is offset under the effect of centrifugal forces following rotation.
- the fact that the rotary part forming the airbrake rotates at a high speed can cause the deformation of this part which then changes its geometry. This change may cause changes in the characteristics of friction in air. It can also lead to an increase in the moment of inertia, these two phenomena helping to improve the performance of the speed regulation mechanism.
- the mechanism then includes a friction zone on which the peripheral portion connected to the axis of the rotary part forming the airbrake is rubbed by one or more deformable portion (s), when under the effect centrifugal forces, said peripheral portion shifts from its original position.
- all the projecting and / or indented peripheral portions are connected to the axis of the rotary part by one or more deformable portion (s).
- the rack can be associated with a carriage guide column.
- the rack constitutes in itself a means for guiding the movement of the carriage.
- the rack serves as a rail guide for vertical movement of the bread carriage.
- the return means can be formed by at least one spring, one end of which is secured to the carriage, and the other end of which is secured to the cooking chamber.
- other return means can be envisaged so as to operate with the characteristic retarding mechanism.
- Figure 1 is a general summary perspective view of a toaster.
- Figure 2 is a perspective view of the toaster of Figure 1 in which the housing has been removed.
- FIG. 3 is a top view of the retarder mechanism used in the toaster of FIG. 2.
- Figures 4 and 5 are summary perspective views, shown from two different viewing angles of a part of the retarder mechanism.
- Figures 6, 7 and 8 show two possible configurations of an improvement of the present invention.
- Figures 9 and 10 show alternative arrangements of the regulator system in a toaster.
- Figures 11 and 12 show alternative embodiments of the rotary part of the retarder mechanism according to the invention.
- FIG. 13 shows the various constituent elements of the rotary part of the retarder mechanism presented in FIGS. 11 and 12 during their assembly.
- the invention relates to an improvement made to the mechanism for raising the bread rack carriage in a toaster such as that shown diagrammatically in FIG. 1, and allowing a regulation of the ascent rate of said carriage, in order to avoid a too rapid and therefore too sudden ascent of the carriage.
- such a toaster 1 comprises an external frame 2, the upper face 3 of which is equipped with at least one insertion slot 4 for the bread to be toasted.
- This insertion slot 4 gives access to the baking chamber 5 illustrated diagrammatically in FIG. 2.
- This baking chamber 5 comprises a bread-carrying trolley 6 intended to support the slices of bread put to toast, said trolley being movable vertically against the return force of a spring 11, as is well known in the art.
- the downward movement of the carriage 6 can be obtained by action on a lever 7, accessible on a side face of the toaster.
- This lever can for example be embedded in a housing 8 pierced with a vertical slot 9 to allow the displacement of the connection portion 10 of the lever 7 with the rest of the carriage 6.
- the toaster comprises locking means (not shown) which keep the carriage 6 in the low position during the cooking operations.
- locking means may consist of an electromagnet and its control circuit.
- the spring 11 operating in traction, exerts on the carriage 6 an upwardly directed force.
- This spring 11 is fixed by one end 12 to the frame, and for example to the cooking chamber 5, the other end of the spring being integral with the carriage 6.
- the upward movement of the carriage is controlled by the presence of the speed control device 13.
- This regulation mechanism 13 is illustrated in FIG. 3 in top view.
- This mechanism is integral with the carriage 6 via a connecting portion 14. This retarder mechanism therefore moves substantially vertically relative to a rack 20 which is fixed relative to the rest of the toaster.
- Guide means 21, of sufficient height, are provided to guide the retarder mechanism 13, and therefore of the carriage 6 during its vertical movement.
- the regulating mechanism can be arranged in such a way that, by simple gravity, it presses on the rack.
- a spring 43 or a part having a spring effect, makes it possible to press the retarder mechanism on the rack, in order to ensure good transmission of the movement.
- This spring, or the part having this spring effect can work, in combination or not, in compression, in tension and / or in torsion.
- the retarder mechanism has two vertical side walls
- a first pinion 26 is meshed on the notched part 27 of the rack 20.
- This pinion 26 pivots about an axis of rotation 28 mounted between the two walls 22, 23.
- the first pinion 26 drives a second pinion of larger diameter 29 situated on the same axis 28.
- This pinion 29 is meshed with a third pinion 30 of smaller diameter, itself driven in rotation about an axis 31 connecting the two walls 22, 23.
- the third pinion 30 is connected to a fourth pinion 34, of larger diameter, mounted on the same axis 31.
- This fourth pinion 34 is meshed with a fifth pinion 35 located below the fourth pinion 34, and which has a smaller diameter.
- This fifth pinion 35 is mounted on an axis 36 connecting the two walls 22, 23. This axis 36 extends outside the wall 23 to form the axis of rotation of the characteristic rotating part 25.
- this air brake 25 comprises a central portion 38, and two peripheral projecting portions 39 connected to the central part 38 by connecting portions 40.
- These peripheral projecting portions 39 have in a plane passing through the axis of rotation of the part. 25, a relatively large area, so as to cause friction in the air, when the part 25 is rotated.
- the connecting portions 40 are of relatively small dimensions, so as to be deformable under the action centrifugal forces exerted radially on the peripheral portions 39 during the rotation of the part 25.
- the user has one or more slices of bread through the slot 4 of the toaster, bearing on the bread-carrying trolley 6. He then lowers the bread-carrying trolley by means of the control lever 7.
- the speed regulating mechanism 13 acts as well on the descent of the carriage as on its ascent.
- a specific device makes it possible to interrupt the regulation mechanism during the descent phase of the carriage, as will be developed later.
- the bread holder trolley is held in the low position by any known system, such as an electromagnet.
- the electromagnet releases the bread-carrying carriage which is returned to its upper position by the return spring 11. Therefore, the pinion 26 meshes with the rack 20, which has the effect of rotating the various pinions 29, 30, 34, 35 resulting in the rotation of the airbrake part 25.
- the bread-carrying trolley is then subjected to different forces: - a restoring force by the spring 11 which tends to accelerate the movement of the trolley, - a braking force by the various frictions in the air, even on the friction zone 42 peripheral projecting portions 39.
- air brake will be used subsequently to also designate combined braking by stirring the air and physical friction of the peripheral projecting parts 39 on a friction zone 42.
- the regulation mechanism is therefore dimensioned, in particular in the ratio of the pinions, but also in the geometry and the materials chosen in terms of dry friction, so that the carriage quickly acquires a substantially uniform ascent speed.
- the ratio of the teeth between the successive pinions 26, 29, 30, 34, 35 is such that the speed of rotation of the part 25 forming the airbrake is of the order of 4000 revolutions / min. It follows that the phenomena of friction in the air are significant, and that the deformation of the rotary part 25 occurs quickly to increase the deceleration by dry friction with the bell 42.
- the part 25 forming the airbrake comprises only two peripheral projecting portions 39, but it goes without saying that the number and the shape of each of these parts can be adapted to the desired rate of deceleration.
- a single peripheral projecting portion can in particular be used.
- the deformation of the characteristic part 25 could occur, not in the direction of the axis of rotation 36, but also radially, or in a combined manner.
- a regulating mechanism as illustrated in the figures, comprising a chain of five pinions, with an overall gear ratio of the order of 17.5, it is possible to regulate the rate of ascent of the carriage to a value of 70 mm / s, when the weight of the carriage 6 is of the order of 60 g, without bread placed on the carriage, with a return spring of a stiffness of the order of 8 N in the low position at 4 N in the high position, the stroke traveled being of the order of 90 mm.
- the speed, controlled avoids throwing the bread out of the room.
- the stiffness of the spring can also be increased to ensure that a large force, when the carriage is in the low wire position, limits the risks of jamming by bread crumbs of said carriage when this the latter is released and tends to return the carriage to a high bread unloading position.
- the electrical supply contacts are often carried by the carriage, possible jamming in the low position may lead to the interruption of the electrical supply at the end of the baking cycle, which may lead to excessive toasting of the bread and damage to the device with risk of fire.
- the rack does not cover the entire length corresponding to the lift stroke of the carriage. Its lower end is then at a distance from the pinion 26 when the carriage is held by the electromagnet in the low position.
- the ascent of the carriage, over the first few millimeters, is not slowed down by the regulation system 13.
- the pulling force on the bread-carrying carriage is therefore maximum, and can also make it possible to compensate for a jamming of said carriage by crumbs or a specific over-grill.
- Figure 6 shows a possible embodiment of a mechanism for disengaging the braking system when lowering the carriage.
- the walls, of which only the wall 220 is shown, on which the various axes of the toothed wheels 26, 29, 50, 52 of the retarder system are arranged are articulated around an axis 56.
- This axis is judiciously disposed relative to the center of gravity of the system so that the latter is in abutment on the rack 20.
- a spring 43 makes it possible to compensate for the positioning deviations between the parts linked to the tolerances, by ensuring constant support of the pinion 26 on the rack 20.
- This spring can be molded on the regulator housing or on the toaster housing.
- the ascent is carried out as previously stated.
- the arrangement of the axis of rotation 56 of the walls 220, as well as the pressing force generated by the spring 43 tends, during the upward movement of the carriage, to rotate the supports anti-clockwise, allowing to mesh the pinion 26 on the rack 20, ultimately leading to the rotation of the toothed wheel 52 whose axis carries the rotary part forming the airbrake, not shown, as previously explained.
- Figures 7 and 8 offer another alternative for disengaging the retarder system when lowering the carriage.
- This oblong hole 60 is produced in the parts 22, 23 for holding the pinion axes.
- the declutching device can still find other technical embodiments.
- two consecutive cogwheels can be configured like a ratchet system so that the rotation of the drive wheel causes the rotation of the other wheel only when it rotates in a direction of rotation, which is that corresponding to the reassembly of the bread carrier.
- FIGS. 9 and 10 Another embodiment of the invention is illustrated in FIGS. 9 and 10. It consists in dissociating the device for regulating the bread carrier trolley.
- the vertical walls of the retarder system between which are arranged different pinions, including the first pinion 26 which triggers the rotation of the various gears and of the rotary part forming the airbrake, are physically linked, for example by the part 135 to the lower part of the inner frame 16 of the toaster.
- a belt 133 is connected, at one of its ends, by known means 134, such as gluing or riveting, to the vertical support 15 of the bread-carrying carriage mounted to slide on a vertical column 17.
- the other end of the belt is integral with a vertical part of the internal frame 16.
- the belt on an extended central part, is crenellated or toothed, so as to be able to cooperate with the pinion 26.
- a variant of this principle consists in proposing an endless belt 136, such as a timing belt, arranged between the pinion 26 and a pulley 140.
- This belt linked by a means 134 to the bread carrier trolley by the plate 15 also transmits the movement of raising the trolley to the pinion 26.
- Figures 11 to 13 show alternative embodiments of the rotary part forming the airbrake and its relation to the other constituent parts of the regulation system.
- braking in the air has been increased by the use of specific additional blades.
- the rotary part 250 has a core 252 and three radial arms 254 curved at their end by forming an arc of a circle relative to the core 252.
- This part is made of a flexible and deformable material.
- the arms 254 can deform and unfold under the effect of centrifugal force when the part is rotated.
- the part 250 is provided with a central opening and is positioned, by the said opening, on an axis 256.
- Two symmetrical lateral arms 258 are arranged on this axis and comprise, at their end, blades 260.
- a toothed wheel 270 can also be used for the transmission of the movement of the pinions, as previously explained.
- a bell 266 is intended to cover the rotating part 250, between the blades 260.
- a more economical version of the previous embodiment presented in FIG. 12 consists in making the part 250 forming the airbrake, the blades 260 and the pinion 270 in a single piece, for example made of thermoplastic, therefore having a lower coefficient of friction at the level of the blades only if these had been made of elastomer.
- the thickness of these blades could, for example, be increased to compensate for this difference.
- Protection of the speed regulation system can be envisaged by a housing containing, not only the pinions and / or gears, but also the part forming the airbrake, thus making it possible to ensure sealing against the crumbs and dust of the device.
- the opening for the passage of the column and / or the rack can be furnished with brushes or flaps to maintain a good seal at this location.
- the slowing down mechanism according to the invention has multiple advantages, and in particular that of ensuring braking of the ascent of the carriage which is not a function of the inevitable temperature variations taking into account the proximity from the cooking chamber.
- the ascent rate thus regulated is relatively constant over a large stroke, and for a greater range of forces.
- the retarder system By the relative discretion of the operation of the retarder system, it can advantageously be provided to supplement the device with a signal or a noise during the ascent phase of the carriage, making it possible to warn the consumer that the bread is toasted.
- This warning can in particular be obtained through the teeth of the pinions, by a judicious choice of the material composing them in order to make their gear audible.
- Any other known means of sound signaling can be used in the context of the present invention. In particular, arrangements in the cogs causing a whistling sound during their rotation can be used.
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Electric Stoves And Ranges (AREA)
- Toys (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02801082A EP1450658A1 (fr) | 2001-12-05 | 2002-11-29 | Grille-pain electrique perfectionne |
AU2002364801A AU2002364801A1 (en) | 2001-12-05 | 2002-11-29 | Improved toaster |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR01/15717 | 2001-12-05 | ||
FR0115717A FR2832914B1 (fr) | 2001-12-05 | 2001-12-05 | Grille-pain electrique perfectionne |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003047405A1 true WO2003047405A1 (fr) | 2003-06-12 |
Family
ID=8870129
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2002/004110 WO2003047405A1 (fr) | 2001-12-05 | 2002-11-29 | Grille-pain electrique perfectionne |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1450658A1 (fr) |
CN (1) | CN1599573A (fr) |
AU (1) | AU2002364801A1 (fr) |
FR (1) | FR2832914B1 (fr) |
WO (1) | WO2003047405A1 (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10333312A1 (de) * | 2003-07-22 | 2005-02-10 | BSH Bosch und Siemens Hausgeräte GmbH | Elektrischer Brotröster |
DE102005006385A1 (de) * | 2005-02-11 | 2006-08-24 | BSH Bosch und Siemens Hausgeräte GmbH | Toaster |
CN102228368B (zh) * | 2010-04-14 | 2013-11-06 | 晶辉科技(深圳)有限公司 | 烤面包炉滑架的阻尼装置 |
EP3379222B1 (fr) | 2017-03-22 | 2020-12-30 | Methode Electronics Malta Ltd. | Ensemble de capteur à base magnétoélastique |
US11084342B2 (en) | 2018-02-27 | 2021-08-10 | Methode Electronics, Inc. | Towing systems and methods using magnetic field sensing |
US11491832B2 (en) | 2018-02-27 | 2022-11-08 | Methode Electronics, Inc. | Towing systems and methods using magnetic field sensing |
US10670479B2 (en) | 2018-02-27 | 2020-06-02 | Methode Electronics, Inc. | Towing systems and methods using magnetic field sensing |
US11221262B2 (en) | 2018-02-27 | 2022-01-11 | Methode Electronics, Inc. | Towing systems and methods using magnetic field sensing |
US11135882B2 (en) | 2018-02-27 | 2021-10-05 | Methode Electronics, Inc. | Towing systems and methods using magnetic field sensing |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2035965A1 (fr) * | 1969-03-28 | 1970-12-24 | Gen Electric | |
FR2729285A1 (fr) * | 1995-01-13 | 1996-07-19 | Moulinex Sa | Grille-pain electrique |
US5771780A (en) * | 1995-01-13 | 1998-06-30 | Moulinex S.A. | Electric toaster |
FR2759566A1 (fr) * | 1997-02-14 | 1998-08-21 | Bosch Siemens Hausgeraete | Grille-pain electrique avec freinage du porte-pain au passage de la position de grillage a la position de prelevement |
EP0901767A1 (fr) * | 1997-09-12 | 1999-03-17 | Seb S.A. | Grille-pain à remontée ralentie |
JP2002085266A (ja) * | 2000-09-21 | 2002-03-26 | Sanyo Electric Co Ltd | ポップアップトースタ |
-
2001
- 2001-12-05 FR FR0115717A patent/FR2832914B1/fr not_active Expired - Fee Related
-
2002
- 2002-11-29 EP EP02801082A patent/EP1450658A1/fr not_active Withdrawn
- 2002-11-29 WO PCT/FR2002/004110 patent/WO2003047405A1/fr not_active Application Discontinuation
- 2002-11-29 AU AU2002364801A patent/AU2002364801A1/en not_active Abandoned
- 2002-11-29 CN CN 02824323 patent/CN1599573A/zh active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2035965A1 (fr) * | 1969-03-28 | 1970-12-24 | Gen Electric | |
FR2729285A1 (fr) * | 1995-01-13 | 1996-07-19 | Moulinex Sa | Grille-pain electrique |
US5771780A (en) * | 1995-01-13 | 1998-06-30 | Moulinex S.A. | Electric toaster |
FR2759566A1 (fr) * | 1997-02-14 | 1998-08-21 | Bosch Siemens Hausgeraete | Grille-pain electrique avec freinage du porte-pain au passage de la position de grillage a la position de prelevement |
EP0901767A1 (fr) * | 1997-09-12 | 1999-03-17 | Seb S.A. | Grille-pain à remontée ralentie |
JP2002085266A (ja) * | 2000-09-21 | 2002-03-26 | Sanyo Electric Co Ltd | ポップアップトースタ |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 2002, no. 07 3 July 2002 (2002-07-03) * |
Also Published As
Publication number | Publication date |
---|---|
AU2002364801A1 (en) | 2003-06-17 |
CN1599573A (zh) | 2005-03-23 |
FR2832914A1 (fr) | 2003-06-06 |
EP1450658A1 (fr) | 2004-09-01 |
FR2832914B1 (fr) | 2004-05-28 |
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