| 摘要 |
The invention relates to a display device (54) for an actuator having at least one mechanical display element (10, 11) and a variable speed gear unit, particularly a signal gear unit designed as a variable speed gear unit, having at least two gears with differing transmission ratios, wherein there is a mechanical switching arrangement with which the different gears and/or transmission ratios of the variable speed gear unit can be selected and/or switched even when the display device is mounted operationally ready in a housing without intervention into the housing and without opening the housing from outside, and/or wherein the resolution of the display device (54) and/or the movement of the at least one display element (10, 11) on the actuating path to be displayed of a respective actuator and/or a respective armature can be selectively adjusted. The invention furthermore relates to an actuator having a said type of display device (54). |
| 主权项 |
1. A display device for an actuator comprising:
a mechanical display element; a variable-speed signal gear unit, having at least two gears with different gear ratios, wherein a mechanical switching system is provided by means of which different gears and gear ratios of the variable-speed gear unit may be selected and switched from the outside, even when an operational display device is installed in a housing, without intrusion into the housing and without opening the housing, and wherein the resolution of the display device and the motion of the mechanical display element on the adjustment distance of a particular actuator to be displayed or of a particular fitting may be selectively adjusted; wherein the switching system has a control element via which a desired gear ratio, even in the inset or installed state in a housing, is adjustable from the outside in such a way that it is not necessary to remove the display device or open the housing in order to adjust the gear ratio; wherein the switching system has a clip-like or web-like switching element which is mounted or retained at or on a selector shaft and the switching element has a pin or an axle having a first ratchet wheel which is supported in a rotatably movable manner and which is engaged with a second ratchet wheel which is supported on the selector shaft in a rotatably movable manner and cooperates with same, and in predetermined switching positions the first ratchet wheel is engaged with a respective further toothed gear of the variable-speed gear unit and cooperates with same; wherein the switching system has a number of lock or catch positions which corresponds to the number of gears or gear ratios of the gear unit; wherein the catch or lock positions are situated or distributed approximately equidistantly on a partial circle; wherein when the display device is driven, all toothed gears of the variable-speed gear unit are always in motion, regardless of the gear ratio selection; wherein the variable-speed gear unit includes a toothed gear set having multiple intermeshing toothed gears arranged in a partial circle, which cooperate with the mechanical display element via the switching system; wherein securing means are provided so that the clip-like or web-like switching element is secured and locked or snap-locked in the particular switching positions to prevent inadvertent twisting; and wherein a planet wheel with outer gearing which is rotatably supported coaxially with the system is provided, which acts as a central coupling element between the drive wheel of a particular drive and the display device, and always allows a horizontal orientation of the display device, regardless of the mounting position of the particular drive or the particular fitting.
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