Machine element or mechanism – Mechanical movements – Oscillating to oscillating
Patent
1982-05-20
1985-07-30
Staab, Lawrence J.
Machine element or mechanism
Mechanical movements
Oscillating to oscillating
244213, F16H 2154, B64C 358
Patent
active
045314179
DESCRIPTION:
BRIEF SUMMARY
The invention relates to an angle setting device of hinge type, with a first member and a second member which is rotatable about an axis relative to the first member.
The device in question is initially intended for setting the rudder, flaps and elevators in a model airplane, but the principle of the invention is also applicable in other cases where one wishes to control the swinging of a hinged object, e.g., for controlling ventilation covers. The applicability is extensive.
In model airplanes it is usual to set the rudder and flaps etc., by radio control, with some form of controlled motor being used to achieve the changing setting. As a rule, the setting is achieved by fixing a lever to a hinged member, such as a rudder or flap, and then actuating the lever by an often complicated linkage. As a rule, the lever must protrude outside the plane of the flap. As regards flaps and the like in a wing, there is the further problem that the actuating force must be transmitted via a linkage lying inside the wing and acting in the longitudinal direction of the wing, in order to actuate a lever arm fixed to the flap to swing in a plane essentially perpendicular to the linkage. This is difficult to achieve without a large number of bearing points with play. This play is cumulative in effect.
The major purpose of the present invention is therefore to achieve an angle setting device of hinge type, which is more practical and efficient.
A special purpose of the invention is to achieve a mechanical control means which converts a translational movement in one direction into a rotational movement about an axis essentially parallel to said translational movement. The control means should be easily and inexpensively manufactured and be suitable for use in model airplanes, for example.
This is achieved according to the invention by an angle setting device of the type mentioned in the introduction characterized by an actuator which is pivotally mounted on the second member about a point of attachment and disposed to pivot along a first guide surface, the movement of the actuator in the second member being limited to a second guide surface, which forms an angle with the first guide surface, so that the pivoting of the actuator causes a relative rotational movement between first and the second members.
According to a preferred embodiment, the hinge members are made of plastic, the first member, intended for fixed mounting in a model airplane, for example, having a slotted opening the two walls of which fit against the actuator and force it to move within the planar slot. The other hinge member is fixed to a movable prt (rudder flap etc.) and can swing about axial pins. Between the axial pins there is a slot into which the end of the actuator is fitted and is fixed by a pin driven through the actuator perpendicular to the slot.
A different arrangement of the two guide surfaces is possible. The pin and slot in the second hinge member can be replaced by a shaft. Alternatively, the actuator can be journalized on a pin in the first hinge member and run freely in a slot in the other hinge member. This slot need not be straight. In this way a suitable varying mechanical advantage can be achieved over the operating interval.
The invention will now be described with reference to the drawings.
FIG. 1 shows a controlled hinge.
FIG. 2 shows another embodiment of a controlled hinge.
FIGS. 3 and 4 show model airplanes provided with steering means based on the invention.
FIG. 5 shows a corresponding glider.
The example shown in FIG. 1 shows the presently preferred embodiment of an angle setting device of hinge type, which is mounted on a wing, of which only a portion is shown. The hinge has two members 3 and 5, the first of which is fixed to the wing itself and the second of which is fixed to a flap which is swingable relative to the wing. The two members are articulated via pins 6 and the movement is regulated by an actuator 1 which is pivoted via a joint 8 and a connecting rod 9, coupled to a control apparatus (not shown). The actuator 1 co
REFERENCES:
patent: 1040479 (1912-10-01), Winton
patent: 1466664 (1923-09-01), Lowe
patent: 1804765 (1931-05-01), Gwinn
patent: 1901827 (1933-03-01), Stokes et al.
patent: 2508057 (1950-05-01), Bishop
patent: 2679367 (1954-05-01), Pribil et al.
patent: 3774463 (1973-11-01), Heintz
I. I. Artobolevsky, Mechanisms in Modern Engineering Design, vol. IV, p. 156.
LandOfFree
Hinge-type angle setting device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hinge-type angle setting device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hinge-type angle setting device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2366735