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
  • A47J43/00—Implements for preparing or holding food, not provided for in other groups of this subclass
  • A47J43/04—Machines for domestic use not covered elsewhere, e.g. for grinding, mixing, stirring, kneading, emulsifying, whipping or beating foodstuffs, e.g. power-driven
  • A47J43/07—Parts or details, e.g. mixing tools, whipping tools
  • A47J43/075—Safety devices
  • A47J43/0761—Safety devices for machines with tools driven from the lower side
  • A47J43/0766—Safety devices for machines with tools driven from the lower side activated by the proper positioning of the mixing bowl
• • 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
  • A47J43/00—Implements for preparing or holding food, not provided for in other groups of this subclass
  • A47J43/04—Machines for domestic use not covered elsewhere, e.g. for grinding, mixing, stirring, kneading, emulsifying, whipping or beating foodstuffs, e.g. power-driven
  • A47J43/046—Machines for domestic use not covered elsewhere, e.g. for grinding, mixing, stirring, kneading, emulsifying, whipping or beating foodstuffs, e.g. power-driven with tools driven from the bottom side

Definitions

• the invention relates to household appliances, such as mixers-mixers, comprising: a housing having on its upper part a receiving seat and enclosing an electric motor group whose output shaft projects into the seat, a removable bowl having a removable bottom comprising a base having a side wall of a shape complementary to the reception seat to come to fit in operation on said seat and the central region of which carries a rotary tool secured to a shaft passing through said base and adapted to come s '' couple with the output shaft of the electric motor group, and a first safety device comprising at least one retractable mounted obstacle and suitable for authorizing the coupling of the rotary tool with the output shaft as a result of the retraction of said obstacle only when the removable bowl is correctly fixed on the base and this said base correctly fitted on the receiving seat.
• the safety devices avoid the possible starting of the appliance by a user with the tool-holder base not equipped with the bowl thus exposing the tool and therefore risking causing serious injuries.
• These safety devices integral with the base are relatively complex to produce and their implementation therefore requires significant costs.
• the base being a dirty part of the household appliance, its cleaning obliges the user to take great precautions by avoiding any passage under tap water or in a dishwasher to prevent corrosion problems at the level parts constituting said safety device and thus increase the life of the household appliance.
• the object of the present invention is to remedy the above-mentioned drawbacks and to produce a household appliance in which the safety device is: of a reliable, economical structure, suitable for mass production and easy to implement.
• the hindrance is retractably mounted in the reception seat between an inactive position for which it authorizes the nesting of the base on the reception seat and in which it is retracted by means of actuation integral with the base of the bowl when said bowl is correctly fixed on the base, and an active position in which it projects towards the output shaft and part of which engages with at least one notch formed in the side wall of the base so as to prevent the rotary tool from coupling with the output shaft and for which it escapes by means of actuation when the bowl is not present or incorrectly fixed on the base.
• the first safety device allows in a simple way, while guaranteeing the possibility of cleaning the bowl and the base under tap water or in a washing machine. dishes, to obtain absolute safety for the user by prohibiting the coupling of the rotary tool fixed on the base when the bowl is not present or incorrectly locked on the base.
• the household appliance comprises a second safety device intended to prevent the reverse rotation of the bowl on the base when the base, on which is mounted 3 correctly the bowl, is fitted correctly on the receiving seat.
• This second safety device thus makes it possible, after locking the bowl-base assembly on the reception seat, to produce a one-piece household appliance which has great reliability as well as good handling when in use.
• a safety device prohibiting the removal of the bowl when the bowl-base assembly is correctly fixed on the receiving seat prevents any improper handling of the user, in particular unlocking the bowl-from the base after use, which could: lead to serious consequences, namely a sudden opening of the bottom of the bowl and therefore burns in the event of a hot preparation contained inside the bowl or soiling of the household appliance and the work surface on which it rests said household appliance.
• FIG. 1 is a schematic view in vertical section of a household appliance equipped with a first safety device according to the invention and illustrating a bowl associated with a base equipped with shackles in the inactive position, the bowl-base assembly being fitted onto a seat for receiving the housing of the household appliance;
• FIG. 2 ' is. a view similar to Figure 1, but illustrating the base without the bowl and the barriers in the active position;
• FIG. 3 is a view similar to Figure 1, illustrating the base equipped with the bowl before its fitting on the receiving seat; 4 - Figure 4 is a perspective view of the housing of the household appliance illustrating the receiving seat formed of annular bosses each of which is equipped with a hindrance shown in the active position.
• - Figure 5 shows a perspective view of the base of the household appliance shown in Figure 1.
• Figure 6 shows a horizontal sectional view along line II of Figure 1 and illustrating the bowl-socket assembly on the annular bosses forming the receiving seat as well as a second safety device locking the bowl on the base.
• Figure 7 shows a horizontal sectional view along line II-II of Figure 1 and illustrating the side wall of the base as well as the positioning of said base on the annular bosses.
• the household appliance represented in FIGS. 1 and 2 is a mixer-mixer comprising a housing 1 having on its upper part 2 a receiving seat 3 and containing an electric motor group 4 whose output shaft 5 projects into the reception seat 3, a removable bowl 7 having a removable bottom 8 comprising a base 9 having a side wall 10 of a shape complementary to the reception seat 3 to come to fit in operation on the upper part 2 and whose central region 12 carries a rotary tool 13, such as a knife, secured to a shaft 14 passing through the bottom wall 15 of the base 9 and adapted to be coupled with the output shaft 5 of the electric motor group 4 to the using a coupling device 16, and a first safety device comprising at least one hindrance 17 retractable mounted and suitable for authorizing the coupling of the rotary tool 13 with the output shaft 5 as a result of the retraction of said ent rave 17, 5 only when the removable bowl 7 is correctly fixed on the base 9 and this said base 9 correctly fitted on the reception seat 3.
• the reception seat 3 has four annular bosses 41, 42, 43 and 44 forming notches on the upper part 2.
• the hindrance 17 is movably mounted in at least one of said annular bosses 41, 42, 43 ' and' 44.
• each of the bosses 41, 42, 43 and 44 comprises a hindrance 17.
• Each hindrance 17 is mounted retractable through a light 28 made in the internal lateral face 29 of the annular bosses 41, 42, 43 and 44 forming a receiving seat 3 and has a part 24 which projects from the lumen 28 when the bowl 7 is not present or incorrectly fixed on the base 9 .
• the coupling device 16 in a manner known per se, comprises a rubber driver 18 mounted at the end of the output shaft 5 of the electric motor 4 and capped by a rigid bell 19 carried by the shaft 14 .
• the side wall 10 of the base 9 is extended by a skirt 20 which covers the receiving seat 3 and which is intended to come into engagement with the peripheral edge 21 of the upper part 2 of the housing 1.
• the hindrance 17 is retractably mounted in the reception seat 3 between an inactive position for which it authorizes the nesting of the base 9 on the reception seat 3 and in which it is retracted by means of actuation 22 integral with the base 23 of the bowl 7 6 when said bowl 7 is correctly fixed on the base 9, and an active position in which it projects in the direction of the output shaft 5 and the part 24 of which engages with at least one notch 25 formed in the wall lateral 10 of the base 9 so as to prevent the rotary tool 13 from coupling with the output shaft 5 and for which it escapes by means of actuation 22 when the bowl 7 is not present or incorrectly fixed on the base 9.
• the fixing of the bowl 7 on the base 9 is obtained by means of a bayonet locking device comprising on the side face 40 of the base 23 of bowl 7 a plurality of ergors, two of which 26 and 27 are shown and constitute the actuation means 22.
• the side wall 10 of the base 9 has, in its internal face 10 ' , on the one hand, recesses 30, 31, 32 and 33 in which, during the assembly of the bowl 7 on the base 9, are capable of engaging respectively four pins 26, 27 26 'and 27' of the bowl 7 and, on the other hand, lights, two of which 34 and 35 are shown in FIG.
• said elastic means is, for example, a compression spring 47 arranged between the hindrance 17 and a seat 45 secured to the external lateral face 46 of the annular bosses 41, 42, 43 and 44.
• the lug 26 or 27 forming the actuating means 22 comprises a part 48 forming a ramp intended to retract the part 24 when positioning the bowl-base assembly on the annular bosses 41, 42, 43 and 44 forming reception seat 3.
• the household appliance comprises a second safety device intended to prevent the reverse rotation of the bowl 7 on the base 9 when the 'base 9, on which the bowl 7 is correctly mounted, is fitted correctly on the annular bosses 41, 42, 43 and 44.
• the bowl 7 being fixed by rotation on the base 9 for example by means of the bayonet locking device
• the second safety device comprises a part 50 forming a stop formed on one 41 of the annular bosses, projecting in the direction of the output shaft 5 and coming into engagement with at least one 26 of the pins 26, 27, 26 'and 27' of the base 23 of the bowl 7 through a notch 60 formed in the side wall 10 of the base 9.
• the removable fixing of the bowl 7 on the base 9 is obtained by means of a fixing by thread.
• the bowl 7 comprises a helical rib whose lower sector constitutes the actuating means and the side wall of the base comprises a helical groove of shape complementary to the rib and in its lower part has a light which communicates with the external lateral wall of the base and through which opens the lower sector so that, when positioning the bowl-base assembly on the receiving seat, the lower sector is opposite the obstacle 17.
• the lower sector comprising the part 48 forming a ramp retracts the part 24 of the hindrance 17.
• the first safety device it is understood that after a correct fixing of the bowl 7 on the base 9 and a correct fitting of the bowl-base assembly on the reception seat 3, a mixer is obtained- mixer offering good safety when in use.
• the second safety device making it possible not to remove the bowl 7 from the base 9 when the bowl-base assembly is correctly fitted onto the reception seat 3, protects the user against improper handling during the use of the household appliance.
• the operation of the mixer-mixer equipped with the first and second safety devices according to the invention is as follows.
• the part 50 formed on the annular boss 41 forms a stop for the lug 26 of the bowl 7 and prevents any unlocking of the bowl 7 of the base 9 by a reverse rotation of said bowl 7 on the base 9.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Food Science & Technology (AREA)
• Food-Manufacturing Devices (AREA)
• Closures For Containers (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=9522110

Family Applications (1)

Country Status (6)

Cited By (1)

Families Citing this family (42)

Family Cites Families (18)

• 1998
  • 1998-01-23 FR FR9800741A patent/FR2773977B1/fr not_active Expired - Fee Related
• 1999
  • 1999-01-22 CN CN99804362A patent/CN1126496C/zh not_active Expired - Fee Related
  • 1999-01-22 US US09/600,810 patent/US6350053B1/en not_active Expired - Fee Related
  • 1999-01-22 EP EP99901624A patent/EP1049397A1/de not_active Withdrawn
  • 1999-01-22 MX MXPA00007202A patent/MXPA00007202A/es unknown
  • 1999-01-22 WO PCT/FR1999/000139 patent/WO1999037193A1/fr not_active Application Discontinuation

Non-Patent Citations (1)

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