Selector device for a domestic appliance, and domestic appliance comprising said selector device

Abstract

A selector device for a domestic appliance includes selection means to select a determinate program and/or function of the domestic appliance; drive means able to switch the domestic appliance on or off and positioned in the selection means; and lighting means, suitable to signal that the apparatus is switched on or off and associated with the selection means and with the drive means.

Claims

1. A selector device for a domestic appliance, comprising: selection means to select a determinate program and/or function of the domestic appliance; drive means able to switch the domestic appliance on or off and positioned in said selection means; and lighting means, suitable to signal that the appliance is switched on or off and associated with said selection means and with said drive means, wherein said selection means comprise at least a rotatable knob which can be rotated around an axis to select a function and/or functioning program of the domestic appliance; said drive means comprise at least a drive button of the domestic appliance positioned in the knob which can rise and lower along said axis from at least a first active position to at least a second inactive position while said knob remains fixed; the selector device also comprising at least a light guide ring positioned between the button and the knob and configured to deliver a light beam emitted by said lighting means so as to form a luminous crown at least between said knob and said button when said button is activated or de-activated, wherein said light guide ring is housed inside a seating made in the knob and comprises a shank adapted to pass through a hole made at the base of said seating of the knob and configured to drive a button for starting the domestic appliance and switching on said lighting means and wherein said lighting means are positioned on said axis in a centered position with respect to the light guide ring so as to form a uniform and well-diffused light ring through said light guide ring.

2. The device as in claim 1, wherein said light guide ring is coaxial to said knob.

3. The device as in claim 1, wherein said button can be translated upward or downward and positioned coaxially to said knob.

4. The device as in claim 1, wherein said light guide ring comprises a light guide block positioned around said shank and adapted to cooperate with said button for starting the domestic appliance and switching on said lighting means.

5. The device as in claim 1, wherein said drive button comprises at least a lid positionable on a peripheral seating of said light guide ring, said lid being made of chromed plastic, steel or other metal or non-metal material suitable to reflect the light emitted by said lighting means.

6. The device as in claim 1, wherein said lighting means comprise at least a LED.

7. A domestic appliance, comprising the selector device of claim 1.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) These and other characteristics of the present invention will become apparent from the following description of some embodiments, given as a non-restrictive example with reference to the attached drawings wherein:

(2) FIG. 1 is a three-dimensional exploded view of a selector device for a domestic appliance according to the invention;

(3) FIG. 2 is a three-dimensional view and partly in section of the device of FIG. 1 in an assembled configuration;

(4) FIG. 3 is a lateral elevated view and in section of the present selector device in a first position of switching off the domestic appliance;

(5) FIG. 4 is a lateral elevated view and in section of the present selector device in a second position of switching on the domestic appliance.

(6) To facilitate comprehension, the same reference numbers have been used, where possible, to identify identical common elements in the drawings. It is understood that elements and characteristics of one embodiment can conveniently be incorporated into other embodiments without further clarifications.

DETAILED DESCRIPTION OF SOME EMBODIMENTS

(7) We will now refer in detail to the various embodiments of the present invention, of which one or more examples are shown in the attached drawings. Each example is supplied by way of illustration of the invention and shall not be understood as a limitation thereof. For example, the characteristics shown or described insomuch as they are part of one embodiment can be adopted on, or in association with, other embodiments to produce another embodiment. It is understood that the present invention shall include all such modifications and variants.

(8) Before describing these embodiments, we must also clarify that the present description is not limited in its application to details of the construction and disposition of the components as described in the following description using the attached drawings. The present description can provide other embodiments and can be obtained or executed in various other ways. We must also clarify that the phraseology and terminology used here is for the purposes of description only, and cannot be considered as limitative.

(9) With reference to the attached drawings, in particular FIGS. 1 and 2, the reference number 10 indicates a selector device associated with a domestic appliance, for example a coffee grinder 20.

(10) Although in the following description reference is made to a coffee grinder, it is understood that the selector device 10 according to the invention can be applied to any domestic appliance whatsoever, both for the kitchen and for other kinds.

(11) In the example case of a coffee grinder 20, it comprises a hopper 11 where the coffee beans to be ground are housed.

(12) In the hopper 11, typically near the bottom, means for grinding the coffee beans will be positioned.

(13) The selector device 10 can be housed in a suitable seating 12 made on a dashboard 13 of the coffee grinder 20.

(14) The selector device comprises a knob 14, or other selection mean, which can be rotated around an axis A, in order to select the desired program or function of the coffee grinder 20.

(15) For example, it can be hypothesized that, by means of the knob 14, it is possible to select the quantity of coffee to be ground in the hopper 11 in order to obtain a certain quantity of coffee powder, for example to fill a given container of coffee powder, to prepare a certain number of cups of coffee, or other.

(16) In order to select the program or function of the coffee grinder 20, the knob 14 comprises a toothed portion 15 able to engage in a toothed wheel 16, the axis of rotation of which is preferably parallel to the axis of rotation A of the knob 14.

(17) The toothed wheel 16, in a known manner, is mounted on an adjustment trimmer 17, which is associated with an electronic board to manage the functioning of the coffee grinder 20.

(18) The rotation of the knob 14, and therefore of its toothed portion 15, determines the rotation of the toothed wheel 16 and therefore the selection of the desired program or function of the coffee grinder 20.

(19) In this regard, on the dashboard 13 position indicators of the knob 14 will be provided and therefore indicate the selected program or function.

(20) The knob 14 comprises internally a seating 18 in which a button 19 to drive the coffee grinder 20 is inserted.

(21) The knob 14 can be made substantially in the shape of an annular crown, as shown by way of non-restrictive example.

(22) The button 19 comprises a centrally disposed lid 21, for example made of chromium-plated plastic, steel or other metal or non-metal material having an adequate shine.

(23) The lid 21 can have a circular shape, for example, as shown by way of non-restrictive example.

(24) The button 19 comprises a light guide ring 22, or another mean or element to diffuse the light, for example made of transparent material.

(25) The lid 21 is housed in a peripheral seating 23 made in the light guide ring 22.

(26) The lid 21 and the light guide ring 22 are preferably coaxial with respect to the axis A.

(27) The light guide ring 22 is provided with a shank 24 and at least a radial portion 31, see FIGS. 3 and 4, connecting the shank 24 to the peripheral seating 23.

(28) The lid 21 can be attached, by any known means, to the shank 24 of the button 19.

(29) The shank 24 passes through a hole 25 made at the base of the knob 14 and comes close to a base support 26 of the selector device 10.

(30) A button 27 to start the drive means of the coffee grinder 20, for example an electric motor, is positioned on the support 26.

(31) The starting button 27 can determine, for example when it is pressed, the switching on of at least one LED 28, or other lighting means.

(32) The LED 28 is advantageously in a centered position with respect to the light guide ring 22, for example positioned on the axis A, so as to form a uniform and well-diffused light ring through the light guide ring 22.

(33) The button 27 is driven by means of a light guide block 30, or another block suitable for light diffusion and suitable to be translated downward by raising or pressing the button 19.

(34) As can be seen for example in FIG. 3, an annular interspace 33 can be made between the light guide block 30 and the shank 24 of the light guide ring 22.

(35) The light guide block 30 is preferably coaxial with the shank 24 of the light guide ring 22.

(36) Between the shank 24 of the button 19 and the hole 25 of the knob 14 a guide element 29 is positioned, integral with the knob 14.

(37) Between the light guide ring 22 and the base of the seating 18 inside the knob a spring 32 or other elastic mean is positioned.

(38) The spring 32, or other elastic mean, can for example be provided to keep the button 19 at rest in an inactive position, or raised, and to be compressed when the button is activated, that is, pressed, to start the domestic appliance 20.

(39) In operation therefore, the selector device 10 according to the invention allows, by rotating the knob 14 around the axis A, to select the desired program or function of the coffee grinder 20, for example it is possible to select different quantities of coffee to be ground as a function of the quantity of coffee powder to be obtained, or as a function of the number of cups of coffee to be prepared.

(40) The function or program, as we said, is selected by rotating the knob 14 around the axis A and then by rotating the toothed wheel 16 with which the trimmer 17 is associated.

(41) It can be hypothesized, for example, that on the dashboard 13 the number of cups of coffee to be obtained is indicated directly, so by choosing a certain number of cups of coffee by rotating the knob 14, the coffee grinder automatically grinds the necessary quantity of coffee beans and obtains the necessary quantity of coffee powder.

(42) Once the function has been selected using the knob 14, the button 19 is pressed in direction P, see FIG. 4, and then the shank 24 is lowered so that the light guide block 30 drives the button 27 that switches on the coffee grinder 20.

(43) From the comparison of FIG. 3 and FIG. 4, it can be appreciated that the button 19, in the active position of FIG. 4, is slightly lowered inside the knob 14, which remains fixed.

(44) Substantially therefore, the drive button 19 can rise and lower along the axis A, while the knob 14 can rotate with respect to said axis A.

(45) Switching on the coffee grinder 20 also causes the LED 28, or other lighting mean, to light up, the light of which will be diffused by the light guide ring 22 and will substantially give rise to a luminous ring between the knob 14 and the lid 21 of the button 19.

(46) The lid 21 made of shiny material also reflects the light emitted by the LED 28, or in any case by the lighting means, thus increasing the intensity of the luminous ring.

(47) The domestic appliance 20 with which the present selector device 10 is associated could naturally be any domestic appliance whatsoever which provides to operate according to different functioning modes, therefore with different programs and operating modes, for example any other food shredding or mincing device, such as a meat grinder, a blender, a food processor, a vegetable shredder or suchlike, or other kinds of domestic appliances, for example washing machines, dishwashers, or suchlike.

(48) Advantageously, therefore, the present selector device 10 is equipped with both means to select the various programs or functions of the domestic appliance, for example the knob 14, and also start means, for example the button 19, suitable to switch the domestic appliance on and off, and positioned in said selection means.

(49) Moreover, the selection means and the activation means are associated with lighting means, for example the LED 28, suitable to signal that the domestic appliance 20 is switched on or off.

(50) The button 19 is also provided with a light guide ring 22 able to create a light ring between the knob 14 and the button 19, in order to signal, for example, that the domestic appliance 20 is switched on or off.

(51) Moreover, since the LED 28, or other lighting mean, is located in a centered position with respect to the light guide ring 22, the light ring formed will have an optimum diffusion and intensity.

(52) It is clear that modifications and/or additions of parts can be made to the selector device as described heretofore, without departing from the field and scope of the present invention.

(53) It is also clear that, although the present invention has been described with reference to some specific examples, a person of skill in the art shall certainly be able to achieve many other equivalent forms of selector device, having the characteristics as set forth in the claims and hence all coming within the field of protection defined thereby.

(54) In the following claims, the sole purpose of the references in brackets is to facilitate reading: they must not be considered as restrictive factors with regard to the field of protection claimed in the specific claims.