This application is a United States National Phase application of International Application PCT/DE2006/001645 and claims the benefit of priority under 35 U.S.C. §119 of German Patent Application DE 10 2005 044 254.4 filed Sep. 15, 2005, the entire contents of which are incorporated herein by reference.
The present invention pertains to a device for manually controlling or actuating a technical system for example, for selecting gears of a shift-by-wire speed-change gear, the actuating device including an actuating element, which is mobile (movable) relative to a base area, with at least two switching positions, wherein at least one additional switching element is arranged at said actuating element, which additional switching element acts on a signal transmission device with a signal transmitter.
Actuating devices of this type are used, for example, but by no means exclusively, for manually selecting gears or for gear preselection in speed-change gears of motor vehicles. Such Actuating device, which may be, for example, an actuating lever arranged between the front seats of a motor vehicle, are frequently equipped with an additional switching element, for example, with a switch, a button or even a sensor, in the area of the lever knob.
Such an additional switching element may be used, for example, to activate or deactivate additional functions besides the main actuation performed with the actuating lever.
It may be, for example, the manual starting or stopping of the internal combustion engine, or, for example, the P position (parking brake) of an automatic transmission can be engaged herewith.
Actuating devices or actuating levers with additional switching elements arranged in the area of the knob are known from the state of the art. Thus, DE 100 25 357 A1 shows a gearshift lever with a switch integrated in the shift knob for actuating additional functions of the motor vehicle.
However, it is necessary with such actuating devices or actuating levers with additional switching elements, which are known from the state of the art, to wire the additional switch, which is arranged, for example, in the knob of the actuating lever, separately, or to install a flexible electrical line connection from the rigid base area of the actuating lever through the actuating lever into the knob area of the actuating lever in order to make it possible to transmit the electrical switching signals of the additional switching element to the respective switching receiver.
However, the electrical line is also moved along in this case during motion of the actuating lever in the area in which the actuating lever is connected to the lever base and is even deformed by bending each time. This continual bending deformation of the electrical line connection between the additional switching element and the lever base may, however, lead to fatigue of the connection cable and ultimately to damage to or failure of the signal transmission between the additional switching element and the switching receiver.
Furthermore, it is necessary already at the time of the mounting of such a prior-art Actuating device with additional switching element that the electrical line between the mobile actuating element and the immobile base area is installed especially carefully, because, on the one hand, the electrical line requires a certain unobstructed free space for the length and motion compensation in the transition area between the actuating element and the base area, and, on the other hand, it must be ensured that the electrical line cannot be clamped between the components of Actuating device, which components are movable in relation to one another, despite the certain mobility that is necessary. However, both require great care during assembly and thus lead to a comparatively complicated and expensive mounting of the prior-art Actuating device with additional switching element.
Finally, the arrangement of an electrical switching element, for example, in the knob of an actuating lever, is likewise not unproblematic, because the electrical switching element is exposed to additional external effects in this case. Such additional external effects, for example, shocks during motion and at the end stop of the operating element, abusive forces, or even intense heating, especially in the motor vehicle, may lead to premature aging or failure of the electrical switching element. However, this is hardly acceptable, especially when such an additional switching element is used for applications that are critical in terms of safety.
Against this background, the object of the present invention is to provide an actuating device for a technical system, for example, for actuating a speed-change gear, which has an additional switching element and with which the drawbacks of the state of the art can be overcome. In particular, the actuating device shall avoid the problem of a delicate cabling and of the insufficient protection of the electric contact maker, which problem is associated with the arrangement of the additional switching element which is present in the state of the art.
The actuating device according to the present invention comprises, in a manner that is known per se, an actuating element, which can be brought into at least two different switching positions. Furthermore, the actuating device comprises at least one additional switching element, the additional switching element acting on a signal transmission means, which has an, e.g., electrical or electronic signal transmitter.
However, the actuating device is characterized according to the present invention in that the additional switching element and the signal transmission means are connected by means of a mechanical transmission means. However, the signal transmitter is not arranged at the actuating element, but is connected to the base area of the actuating device.
The fastening of the signal transmitter in the base area of the actuating device entails, in other words, that the signal transmitter is both arranged in the base area such that it is protected optimally and, furthermore, the cabling between the signal receiver and the signal transmitter can also be mounted rigidly and immovably as a continuous cabling.
However, the drawbacks of actuating device with signal transmitters arranged in the actuating element, which were already described in the introduction, are thus already eliminated altogether, because, thanks to the mechanical transmission connection between the additional switching element and the signal transmitter means, as well as thanks to the rigid mounting of the signal transmitted at the base, all problems of the actuating device with additional switching element, which are associated with wiring and the arrangement of the signal transmitter and are known from the state of the art, are eliminated.
The present invention is embodied at first independently from the design and the arrangement of the transmission means and the type of the signal transmitter as long as reliable triggering of the switching signal is ensured with the signal transmitter when the additional switching element is actuated.
According to a preferred embodiment of the present invention, the signal transmitter is, however, a Hall sensor. The design of the actuating device according to the present invention with a Hall sensor is advantageous because contactless transmission of the switching signal from the actuating element to the base area of the actuating device or to the signal transmitter is made possible in this manner. The contactless transmission of the switching signal is free from maintenance and wear, and is thus favorable for the long-term and reliable function of the actuating device.
According to other embodiments of the present invention, the signal transmitter is designed as an optical sensor or as a microswitch. An optical sensor has, since it likewise operates in a contactless manner, advantages similar to those of a Hall sensor, while a signal transmitter designed as a microswitch can be embodied, for example, at an especially low cost. Since microswitches also handle a large number of switching cycles, a reliable actuating device with long service life can be embodied in case of the use of a microswitch as well.
The present invention can be embodied regardless of the concrete design and shape of the actuating element as long as it is a mechanical or electromechanical, mobile actuating element. According to preferred embodiments of the present invention, the actuating element is, however, a gearshift lever, a rotary switch or a slide switch. An additional switching element each, which acts in the manner according to the present invention on the signal transmitter arranged in the base area of the actuating device, may be arranged in such actuating elements in the area of the actuating element.
The design embodiment of the additional switching element is at first likewise freely selectable as long as the additional switching element performs during the actuation at least a slight mechanical motion, which can be transmitted to the signal transmission means arranged in the base area of the actuating device by means of the mechanical transmission means.
However, provisions are made according to preferred embodiments of the present invention for the additional switching element to be a pushbutton or a push switch or a rocker-type switch or a slide switch. These embodiments of the additional switching element can be used for a great variety of switching purposes and have the necessary switching path during actuation.
According to another, especially preferred embodiment of the present invention, the actuating element is a selector lever for a transmission of a motor vehicle, for example, for an automatic transmission. The additional switching element is preferably used here to engage the parking brake of the automatic transmission.
According to an alternative embodiment of the present invention, the additional switching element is used to start and/or stop the engine of a motor vehicle. The operating comfort of the motor vehicle is improved in this manner, because there is a close chronological relationship between starting the engine and engaging a gear and they can thus also be advantageously standardized from the viewpoint of operation.
The present invention will be explained in more detail below on the basis of drawings, which represent exemplary embodiments only. The various features of novelty which characterize the invention are pointed out with particularity in the claims annexed to and forming a part of this disclosure. For a better understanding of the invention, its operating advantages and specific objects attained by its uses, reference is made to the accompanying drawings and descriptive matter in which preferred embodiments of the invention are illustrated.
In the drawings:
Referring to the drawings in particular,
The representation in
In the middle area of its legs 11, the oscillating lever 8 has an elongated hole 12 each, through which passes a transmission bolt, which is in turn connected to the lower end of the transmission linkage in the gearshift lever shaft 7. The transmission means thus formed causes the oscillating lever 8 to be pivoted downward via the transmission linkage, the transmission bolt and the elongated holes 12 when the pushbutton 5 arranged in the lever knob 4 is pressed.
In the area of its transverse leg located opposite the pivot axis 9, the oscillating lever 8 carries a permanent magnet 13, which is used to trigger the signal transmitter 6 of the actuating device, which said signal transmitter is designed as a magnetic sensor or as a Hall sensor.
In the representation according to
From this arises the advantage according to the present invention, which is, in particular, that both the signal transmitter 6 and the cabling (not shown here) to the signal transmitter 6 can be arranged rigidly and in an optimally protected manner in the base area 3 of the actuating device. Damage to the signal transmitter 6 or a moving cable connection led to a signal transmitter, as they can be found in the state of the art, is ruled out in this manner thanks to the present invention.
The other signal transmitters 14 recognizable in
The gearshift lever 1 shown in
It becomes recognizable from a comparison of
The embodiment according to
In the embodiment shown in
Either the transmission pin 19 of the transmission linkage or the trigger 20 of the microswitch 18—or even both elements 19 and 20—may be provided for this purpose, for example, with a trigger skid (not shown), which permits the transmission of the switching signal from the pushbutton 5 to the microswitch 18 regardless of the instantaneous relative angular position between the actuating lever 1 and the base area 3 or between the actuating lever 1 and the microswitch 18 fastened to the base area.
Thus, it becomes clear as a result that the present invention provides for an actuating device for technical systems and especially for speed-change gears of motor vehicles, in which an additional switching element arranged at the actuating element can be designed as an especially robust switching element subject to little disturbance. In particular, the drawbacks known from the state of the art concerning the delicate cabling to the additional switching element as well as concerning the insufficient protection of the contact maker associated with the exposed arrangement are eliminated with the present invention. Thus, the present invention makes a contribution to the permanently reliable operability of technical systems, especially in case of application in the area of motor vehicle systems and the actuation of transmissions.
While specific embodiments of the invention have been shown and described in detail to illustrate the application of the principles of the invention, it will be understood that the invention may be embodied otherwise without departing from such principles.
Number | Date | Country | Kind |
---|---|---|---|
10 2005 044 254 | Sep 2005 | DE | national |
Filing Document | Filing Date | Country | Kind | 371c Date |
---|---|---|---|---|
PCT/DE2006/001645 | 9/15/2006 | WO | 00 | 3/14/2008 |
Publishing Document | Publishing Date | Country | Kind |
---|---|---|---|
WO2007/031075 | 3/22/2007 | WO | A |
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Number | Date | Country | |
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20080282829 A1 | Nov 2008 | US |