Patent Application
20090127078
The invention relates to a rotary/pushbutton controller having an operator control ring which can be rotated about a rotational axis and which is rotatably mounted on a holding cylinder which is arranged coaxially within the operator control ring, wherein the holding cylinder is provided at one of its ends with an input and/or display field and the operator control ring and/or the holding cylinder can be moved axially with respect to the rotational axis counter to a spring force from a neutral position into a switched position which activates a switch, having a rotary transmitter ring which is arranged coaxially on the operator control ring and is arranged coaxially next to a rotary transmitter which is fixedly connected to the holding cylinder, wherein the relative rotational position of the rotary transmitter ring with respect to the rotary transmitter can be sensed.
In such a rotary/pushbutton controller it is known that only the operator control ring but not the holding cylinder and the rotational axis can be rotated.
Such a rotary/pushbutton controller is used in particular in a motor vehicle for control of, for example, a multimedia system or navigation system or a vehicle subsystem such as an air-conditioning system. In this context, for example the selection of a menu item, can be made by rotating the operator control ring and said menu item is then selected by pressing the operator control ring and/or the holding cylinder and/or the input and display field and switching the switching element.
Numbers, letters or symbols can be displayed and/or selected on the input and display field independently of the operator control ring.
It is also possible to make the input and display field sensitive and to use it for menu prompting and/or data input.
For example, it is possible to input lines, symbols, numerals or letters by moving a finger on the input and display field.
Since the input and display field in the motor vehicle is fixed, said position is optimized for the driver as a right-handed person in a left-hand drive vehicle. If the driver is left-handed or if the front seat passenger is also to activate the rotary/pushbutton controller, this is possible only with difficulty.
The object of the invention is therefore to provide a rotary/pushbutton controller of the type mentioned at the beginning which can be operated satisfactorily with a different arrangement with respect to an operator position and from various operator positions.
This object is achieved according to the invention in that the input and/or display field is mounted so as to be rotatable about the rotational axis.
It is thus possible to rotate the input and/or display field into an operator position which is adapted to the respective operator and in which both satisfactory inputting and satisfactory legibility are possible.
A front seat passenger who writes with his right hand now no longer has to stretch his arm and his shoulder excessively and twist his wrist in order to be able to reach the writing surface correctly.
This also applies to a left-handed driver.
The rotary/pushbutton controller is suitable both for left-hand drive vehicles and for right-hand drive vehicles without reconstruction.
So that it can be easily reached and operated both by the driver and the front seat passenger, the rotary/pushbutton controller is arranged, for example,
on the central armrest or in the region of the central console.
Well-guided mounting is achieved by the fact that the input and/or display field is fixedly arranged on the holding cylinder, and the holding cylinder is mounted so as to be rotatable about the rotational axis and displaceable along the rotational axis. In order to prevent the holding cylinder undesirably rotating when the operator control ring is activated, in the neutral position the holding cylinder can be secured against rotating about the rotational axis, and in the switched position or an intermediate position between the neutral position and the switched position it can rotate about the rotational axis.
If the holding cylinder is of tubular design and is mounted with the inner lateral surface of its tube passage so as to be rotatable and axially displaceable on a fixed guide cylinder, the tilting moment of the holding cylinder can be kept small given a small guiding diameter and a large guiding length, with the result that the holding cylinder does not stick and jam as it rotates.
For the purpose of attachment, the guide cylinder can be fixedly arranged on a carrier component which can at the same time be a printed circuit board.
In this context, the switching element which is activated by the holding cylinder by pressing and linearly displacing the holding cylinder along the rotational axis into the switched position can be arranged on the carrier component.
Returning to the neutral position is easily brought about by virtue of the fact that a spring element, which acts on the holding cylinder in a sprung fashion in the direction of its neutral position, is arranged on the carrier component.
As a result, the rotary transmitter and the operator control ring are also inevitably acted on in a sprung fashion.
A small overall size with a simple configuration is obtained if the holding cylinder has, at its end region facing the carrier component, an actuator element which projects radially into the guide cylinder through one or more openings which have a greater extent in the radial circumferential direction with respect to the rotational axis than the actuator element, wherein the switching element which is arranged on the carrier component inside the guide cylinder can be activated by the actuator element.
In this context, the actuator element can be acted on in a sprung fashion by the spring element in the direction of the neutral position of the holding cylinder and it may be a radially extending web or a web intersection formed from a plurality of webs.
The ends of the opening or of the openings of the guide cylinder form, in the circumferential direction, stops by which the rotatability of the holding cylinder about the rotational axis is limited.
It is also easily constructed with a small number of components if that end of the opening or those ends of the openings in the guide cylinder which is/are remote from the carrier component forms/form stops which limit the axial mobility of the holding cylinder away from the switching element.
The holding cylinder can easily be locked against rotation in various rotational positions by virtue of the fact that that end of the opening or those ends of the openings in the guide cylinder which is/are remote from the carrier component has/have one or more axial latching depressions which are arranged at a distance from one another in the radial circumferential direction of the opening and into which the switching element or part of the switching element can latch axially.
However, for this purpose it is also possible that at the end of the opening or of the openings which is close to the carrier component a latching element is arranged which has one or more axial latching depressions which are arranged at a distance from one another in the circumferential direction of the opening and into which the switching element or part of the switching element can latch axially in a sprung fashion.
A small overall size is obtained if the switching element is arranged centrally in the guide cylinder.
In this context it is also possible for the spring element to surround the switching element.
The spring element can easily be a helical compression spring or an elastomer component.
If the operator control ring or the rotary transmitter ring is connected to the rotary transmitter via a connection which can be overcome when a certain force is exceeded, when the holding cylinder which is fixedly connected to the rotary transmitter is rotated into another operating position, the operator control ring is simultaneously adjusted.
The connection here can be a frictionally locking connection.
If the connection is a latched connection, it is possible to sense satisfactorily in a haptic fashion that a set position has been reached.
The input and/or display field can have a pushbutton key array.
However, it is also possible for the input and/or display field to be a touch-sensitive input and/or display field on which it is possible, for example by moving a finger on the touch-sensitive input and/or display field,
to input numerals or letters by means of handwriting recognition.
The input and/or display field can be lit or backlit and/or can have haptic vibration feedback.
In order to avoid the penetration of dirt, it is easily possible for the end of the holding cylinder which faces away from the switching element to be closed off by the input and/or display field.
So that the input and/or display field can be reliably adjusted into its operating position, the input and/or display field or the end of the holding cylinder which faces away from the switch can have one or more driver elements which protrude axially and/or radially, a plurality of driver elements being preferably arranged distributed uniformly over the circumference of the input and/or display field or the holding cylinder.
Exemplary embodiments of the invention are illustrated in the drawing and will be described in more detail in the text which follows. In the drawing:
The illustrated rotary/pushbutton controller has a printed circuit board 1 which forms a carrier component and on which a tubular guide cylinder 2 is attached by its front end.
Arranged concentrically within the guide cylinder 2 is a switching element 3 which is also attached to the printed circuit board 1 and can be activated by acting on its activation surface 4 which is located opposite the printed circuit board 1.
The switching element 3 is surrounded by an annular elastomer component 5.
On the outer cylindrical lateral surface of the guide cylinder 2, a tubular holding cylinder 6 is mounted in such a way that its cylindrical inner wall can both be displaced axially and rotated about a rotational axis 7.
As is particularly apparent in
Of course, a different length of its extension than 90° can also be selected.
Three webs 9 which are distributed uniformly over the circumference project from the holding cylinder 6 radially with respect to the rotational axis 7, forming a web intersection, through the openings 8 into the guide cylinder 2 and are connected to one another in the center of said guide cylinder 2 by their radially inner ends by means of a cylindrical switching pin 10. The ends of the openings 8 form here stops 12 against which the webs 9 come to bear when the holding cylinder 6 rotates.
The webs 9 are fixedly arranged on the holding cylinder 6 by the radially outer ends.
The switching pin 10 projects coaxially into the cylindrical coaxial opening 11 of the elastomer component 5, and in the illustrated neutral position bears against the activation surface 4 of the switching element 3.
The webs 9 bear, with their side facing the printed circuit board 1, against that end of the elastomer component 5 which faces them, and the prestress of the elastomer component 5 causes them to bear with their side facing away from the printed circuit board 1 against the axial ends of the openings 8 which form stops 13 which are remote from the printed circuit board 1.
At the end of the holding cylinder 6 which projects beyond the corresponding end of the guide cylinder 2 and faces away from the printed circuit board 1, a disk-like closure part 15 with an input and display field 14 is fixedly inserted into the through opening in the holding cylinder 6 and closes it off.
Furthermore, a plurality of knob-like driver elements 16 which protrude axially and are distributed uniformly over the circumference are present on the front-side annular surface of the holding cylinder 6 facing away from the printed circuit board 1, which driver elements 16 can be used to rotate the holding cylinder 6 manually about the rotational axis 7.
At the end region which is relatively close to the printed circuit board 1, the holding cylinder 6 is surrounded by an annular rotary transmitter 17 which is fixedly connected to the holding cylinder 6.
At the end region of the holding cylinder 6 which is remote from the printed circuit board 1, an operator control ring 18 is mounted so as to be rotatable about the rotational axis 7. This operator control ring 18 has a coaxial rotary transmitter ring with which it comes to bear axially against the rotary transmitter 17,
wherein the relative rotational position of the rotary transmitter ring, and thus also of the operator control ring 18, with respect to the rotary transmitter 17 is sensed by the rotary transmitter 17, which feeds a corresponding signal to an evaluation unit (not illustrated).
It is thus possible, for example, for a certain menu item to be chosen.
Relative positions, which correspond to the various menu items, of the rotary transmitter ring with respect to the rotary transmitter 17, are defined by corresponding latched positions of a latched connection (not illustrated) between the rotary transmitter ring and the rotary transmitter 17.
In order to secure the holding cylinder 6 against rotation about the rotational axis in the illustrated neutral position in which it is moved away from the elastomer component 5 of the printed circuit board, a latching element 19 is arranged on the printed circuit board 1 in
The webs 9 also project axially into the latching depressions 20 by a small amount. Latching positions for the holding cylinder 6 are defined by the two latching depressions 20.
If the holding cylinder 6 is to be rotated about the rotational axis 7 by its web 9 which is latched into a latching depression 20 until said holding cylinder 6 latches into the other latching depression 20, the web 9 is deformed elastically in such a way that it can be moved by means of the latching element 19 in order to then latch into the second latching depression 20 again.
A further embodiment of the same function is illustrated in
In this context, two latching depressions 20′, which are each located at the ends in the circumferential direction of the openings 8, are formed at that end of the openings 8 which forms the stops 13 and is remote from the printed circuit board 1.
These latching depressions have a somewhat larger width than the webs 9 so that in the neutral position the webs are made to engage in the latching depressions 20′ by the elastomer component 5.
In order to rotate it, the holding cylinder 6 must now be moved by the depth of the latching depressions 20′ in the direction of the printed circuit board 1 in order to release the latched connection.
The rotary/pushbutton controller is provided in particular for use in a motor vehicle for operating a multimedia system or navigation system or an air-conditioning system. In this context, it is possible, by rotating the operator control ring 18, to choose, for example, a menu item which is then selected by pressing the holding cylinder 6 or the operator control ring 18 or the input and display field 14 and moving the holding cylinder 6 or the operator control ring 18 out of the illustrated neutral position into the switched position which is relatively close to the printed circuit board 1 and activates the switching element 3 by means of the switching pin 10.
Numbers, letters or functional symbols which are displayed on the input and display field 14 can also be selected, as a result of which it is possible, for example, to input a telephone number or the name of a town or of a road.
If the input and display field 14 is touch-sensitive, it can be used by moving a finger on the input and display field 14 in order to input numerals, letters or other characters by means of handwriting recognition.
The switching element 3 can be activated in order to confirm the character which is to be input.
| Filing Document | Filing Date | Country | Kind | 371c Date |
|---|---|---|---|---|
| PCT/EP2007/052048 | 3/5/2007 | WO | 00 | 12/14/2007 |
