EP0669567A1 - Connection mécanique entre un bouton tournant et son dispositif de commande - Google Patents

Connection mécanique entre un bouton tournant et son dispositif de commande Download PDF

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Publication number
EP0669567A1
EP0669567A1 EP95200392A EP95200392A EP0669567A1 EP 0669567 A1 EP0669567 A1 EP 0669567A1 EP 95200392 A EP95200392 A EP 95200392A EP 95200392 A EP95200392 A EP 95200392A EP 0669567 A1 EP0669567 A1 EP 0669567A1
Authority
EP
European Patent Office
Prior art keywords
knob
control device
pair
disk
pins
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.)
Granted
Application number
EP95200392A
Other languages
German (de)
English (en)
Other versions
EP0669567B1 (fr
Inventor
Silvano Fumagalli
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Candy SpA
Original Assignee
Candy SpA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Candy SpA filed Critical Candy SpA
Publication of EP0669567A1 publication Critical patent/EP0669567A1/fr
Application granted granted Critical
Publication of EP0669567B1 publication Critical patent/EP0669567B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G7/00—Manually-actuated control mechanisms provided with one single controlling member co-operating with one single controlled member; Details thereof
    • G05G7/02—Manually-actuated control mechanisms provided with one single controlling member co-operating with one single controlled member; Details thereof characterised by special provisions for conveying or converting motion, or for acting at a distance

Definitions

  • the present invention relates to a knob for actuating rotary control devices with an articulated joint coupling, in particular for actuating selector switches, thermostats and programming devices in washing machines or dishwashers.
  • thermostats and programming devices are controlled by knobs keyed axially onto the drive shaft of the same. In this way the absence of relative bending between the knob and shaft of the selector switch is guaranteed, so as to achieve a constantly correct setting of the selector switch itself, using notches or reference indicators of an external reader.
  • the overall dimensions of the knob/control device assembly are however rigidly fixed in this case, thus limiting the flexibility of use thereof.
  • the object of the present invention is to provide a knob for actuation of a rotary control device of a washing machine or dishwasher, typically a rotary selector switch or thermostat or programming device, which allows a reduction in the overall dimensions of the knob/control device assembly, nevertheless avoiding the problems mentioned above.
  • a knob for actuating a rotary control device for washing machines or dishwashers comprising a grip and an element for coupling to a shaft for driving the control device, characterised in that it comprises an articulated joint placed between said grip and said coupling element.
  • a knob according to the present invention allows greater flexibility in positioning the rotary control device in relation to the actuation knob, in that it enables actuation of the control device even if the axis of the drive shaft of the latter is not aligned with the axis of rotation of the knob. This positioning flexibility may be important from the point of view of safety, that of practicality and ergonomics and appearance.
  • a knob according to the invention consists of a disk 1, for example in plastic, wherefrom a grip 2 projects frontally and centrally.
  • This disk 1 is also referred to as the "display disk”, in that it generally has engraved, in circumferential order, symbols for identifying, together with a fixed external reference indicator on a panel of washing machines or dishwashers, the various working positions of the rotary control device, that is to say of the selector switch or thermostat or programming device/timer.
  • each fork 3 is provided at its own end with a respective slot 4 suitable for housing a respective pin internally and freely rotatably.
  • a plastic ring 5 holds two pairs of pins 8 projecting radially and placed in circumferential order along the external surface of the ring 5, equidistant one from the other at right angles.
  • the pins 8 of each pair are therefore diametrically opposite one to the other.
  • the pins 8 of a first pair engage in the respective slots 4 of the two forks 3, while the pins 8 of the other pair engage in two respective slots 9 each formed in a fork 10 of a second pair of forks projecting from a disk 11 with a diameter smaller than that of the disk 1 and provided in its centre with a through hole 12 for the passage of a small drive shaft of a rotary control device.
  • the disk 11 therefore forms an element for coupling to the drive shaft of the control device, a coupling which may be direct, should the disk 11 be keyed directly onto the drive shaft, or indirectly, when the disk 11 is made integral with some other element, such as distribution cams, which is in turn integral with the drive shaft.
  • the first pair of forks 3, the ring 5 with the two pairs of pins 8 and the second pair of forks 10 form an articulated universal joint coupling between the disk 1 and the disk 11 which, as is known, allows transmission of rotary motion of the disk 1 to the disk 9, and vice versa, even if the rotation axes 13 and 14 of the two disks 1 and 11 form an angle other than zero one in relation to the other. This angle is not moreover fixed, but instead may vary.
  • Figure 2 refers to a washing machine of the so-called “top-loader” type, that is to say where access to the loading drum is gained from the top, instead of the front, of the washing machine.
  • the control devices are also located above, and are housed in a control panel or console 15 which for ergonomic reasons is tilted towards the front of the washing machine.
  • a frame 16 fitting the washing machine externally is generally covered above by a covering 17 (trim) in a plastic material, whereto a rotary control device 18 is also attached, typically a programming device/timer, which regulates the functioning of the machine, causing the performance of the predetermined sequence of the various phases of a washing cycle.
  • the programming device 18 is provided with a small drive shaft 19 which projects above, through a hole 20 in the covering 17.
  • a plastic disk or distribution cam 21 is keyed onto the shaft 19, and which, rotating together with the shaft 19, causes the actuation of a rod (not shown as in itself known) which drives a water distributor.
  • the disk 21 also has engagement holes 22 placed in circumferential order and wherein the same number of teeth 23 are inserted, projecting below the smaller disk 11 of the knob, to make the latter integral with the drive shaft 19 (Figs. 1 and 2).
  • the panel 15 is provided with a hole 24 for housing the display disk 1 of the knob of Figure 1.
  • the panel 15 is provided, in an upper section of the internal edge of the hole 24, with a bucking prong 25, which is inserted in a circumferential groove 6 formed on the edge of the disk 1.
  • Figure 3 however shows, sectioned along a horizontal plane, part of a traditional front-loader washing machine.
  • These machines are generally provided, in the upper part of their external front surface, with a plastic panel 27 which covers a metal bracket 28 whereto the control devices are attached, and which is in turn attached to a frame 29 fitted over the machine.
  • thermostat or programming device 30 In order to reduce the overall front dimensions of a selector switch, thermostat or programming device 30, the latter is mounted in a tilted position in relation to the front wall of the washing machine, providing a recess 7 in the bracket 28.
  • the panel 27 is provided with a circular outlet 32 wherein the disk 1 of the knob is housed, and a hole 33 for the passage of the two forks 3.
  • the disk 1 is also covered above by a disk 34 in a transparent material.
  • the smaller diameter disk 11 of the knob is shaped so as to be fitted directly onto the shaft of the selector switch 31.
  • the programming device 30 By arranging the programming device 30 in this way, space is made available for other control devices, such as thermostats, different selector switches and pushbuttons.
  • the knob according to the present invention can obviously be used also for actuating adjustable thermostats and, in general, for rotary control devices in other electrical household appliances.
  • the angle between the axis of rotation of the display disk 1 holding the grip and the small disk should preferably be no greater than 25 °.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Control Devices (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
EP19950200392 1994-02-28 1995-02-18 Panneau de contrÔle pour une laveuse Expired - Lifetime EP0669567B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI940135 IT232781Y1 (it) 1994-02-28 1994-02-28 Manopola di azionamento di dispositivi di comando rotativi con accoppiamento a giunto articolato, particolarmente per l'azionamento
ITMI940135 1994-02-28

Publications (2)

Publication Number Publication Date
EP0669567A1 true EP0669567A1 (fr) 1995-08-30
EP0669567B1 EP0669567B1 (fr) 1998-05-06

Family

ID=11367659

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19950200392 Expired - Lifetime EP0669567B1 (fr) 1994-02-28 1995-02-18 Panneau de contrÔle pour une laveuse

Country Status (3)

Country Link
EP (1) EP0669567B1 (fr)
DE (1) DE69502317T2 (fr)
IT (1) IT232781Y1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4011513A (en) * 1975-03-20 1977-03-08 Pioneer Electronic Corporation Tuning device for a radio receiver
DE3528063A1 (de) * 1985-08-05 1987-02-05 Bosch Siemens Hausgeraete Haushaltgeraet mit einer bedientafel und einem darin angeordneten drehgriff
EP0397899A1 (fr) * 1989-05-16 1990-11-22 Siemens Aktiengesellschaft Appareil de chauffage, respectivement de climatisation pour véhicule automobile
US5128503A (en) * 1987-07-31 1992-07-07 Frantz Medical Development Ltd. Rotational control dial with flush/protruding flip handle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4011513A (en) * 1975-03-20 1977-03-08 Pioneer Electronic Corporation Tuning device for a radio receiver
DE3528063A1 (de) * 1985-08-05 1987-02-05 Bosch Siemens Hausgeraete Haushaltgeraet mit einer bedientafel und einem darin angeordneten drehgriff
US5128503A (en) * 1987-07-31 1992-07-07 Frantz Medical Development Ltd. Rotational control dial with flush/protruding flip handle
EP0397899A1 (fr) * 1989-05-16 1990-11-22 Siemens Aktiengesellschaft Appareil de chauffage, respectivement de climatisation pour véhicule automobile

Also Published As

Publication number Publication date
DE69502317D1 (de) 1998-06-10
IT232781Y1 (it) 2000-01-19
ITMI940135U1 (it) 1995-08-28
ITMI940135V0 (it) 1994-02-28
DE69502317T2 (de) 1998-12-24
EP0669567B1 (fr) 1998-05-06

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