Machine element or mechanism – Control lever and linkage systems – Elements
Patent
1995-12-14
1997-10-28
Luong, Vinh T.
Machine element or mechanism
Control lever and linkage systems
Elements
74527, 74475, 74471R, 74543, 74557, G05G 506
Patent
active
056807970
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD OF THE INVENTION
The invention relates to a manual control appliance in accordance with the preamble of claim 1.
Such manual control appliances are a control device known from many fields of use; they should be best known for operating computers (in this case called "joystick"), however, they are also employed for controlling and steering, in particular for the remote control of real devices, for example, cranes, hoists, etc.
The manual control device has a control lever as the sole actuating element, which is movable in two independent directions and whose movement in each direction (x or y) acts on a transmission element. Therefore two transmission elements are components of converters which convert the deflection of the control lever into an electrical signal; in this connection the manual control appliance can be used as an on/off switch as well as a proportional control element, wherein the electrical output signals in both main directions are proportional to the respective deflection of the control lever in the associated main direction.
To achieve such pivoting of the control lever, it is necessary that it be pivotably seated and held in a housing; on the one hand, sufficient deflection (deflection angle) must be assured, and on the other hand as precise as possible a definition provides the user with additional information regarding the respective control position of the control element. With manual control appliances in particular which are used for the remote control of cranes or the like, for example, such additional information which is transmitted via a feeling in the hand is of particular importance, since as a rule the view of the user must remain on the remote-controlled device for safety reasons and thus visual displays on the manual control appliance, for example, would divert the attention of the user.
STATE OF THE ART
Numerous detent devices are known in many structural variations wherein as a rule an interchanging effect with the lower end of the control lever exists in such a way that the tip of the control lever encounters different resistances during its deflection movement, which is then passed on to the user by corresponding control information.
Separate components are mostly provided for the detent devices, which are more or less elaborately constructed and must be fitted separately into the housing of the manual control appliance, in which case there is a considerable amount of adjusting work to be performed; as a whole such detent devices also represent a cost factor in connection with manual control appliances which should be as low as possible.
In connection with multiple switches which can be selected with the aid of a control lever (DE,C, 654 375; DE,B 12 17 481) it is known to provide guide grooves and detents (DE,C, 12 17 481) or depressions I, II, III, IV (DE,C, 654 375) in a dome-like embodied bottom of the housing to define the movement of the control lever which are arranged in such a way that a detent position of the control lever used as selective switch is assigned to each of the several contacts. Therefore each detent position of the control lever has a direct connection with the making of a defined contact. The shape of the spherical-shell-like housing bottom or of the housing dome is therefore used for a more exact definition and error-free contacting of such multiple switches.
OBJECTS OF THE INVENTION
It is an object of the invention to embody the pivot bearing of a manual control appliance in such a way that it can be produced with the most simple means, is simple to install into the manual control appliance and is dependable in its function.
In accordance with the invention this object is attained in accordance with the characterizing portion of claim 1.
The basic concept of the invention therefore consists in that only a single preformed part is provided and that the detent positions and the desired stepped deflection characteristics are simply achieved in that the spherical-section-shaped surface of appliance, in which case there is a
REFERENCES:
patent: 3602245 (1971-08-01), Meisel
patent: 4121065 (1978-10-01), Woodard
patent: 4573365 (1986-03-01), Kennard et al.
patent: 4768395 (1988-09-01), Tagawa
patent: 5038632 (1991-08-01), Watson
patent: 5205538 (1993-04-01), Mackoway et al.
patent: 5214980 (1993-06-01), Saeda et al.
Luong Vinh T.
NBB Machrichtentechnik GmbH & Co. KG
LandOfFree
Manual control appliance with a control lever does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Manual control appliance with a control lever, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Manual control appliance with a control lever will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1019086