Spring arm and body support
View Patent ↗A spring arm ( 1 ) for a camera body support is provided with a parallelogram guide ( 3, 5 ) which is made up of two opposing legs ( 10, 11 ) disposed parallel to one another and two likewise opposing connecting elements ( 12, 13 ) that connect the respective ends of the legs ( 10, 11 ) with one another, and an energy storage mechanism ( 15 ), which is supported on two pivot points ( 17, 19 ) on the parallelogram guide ( 3, 5 ), in order to compensate a load acting on the parallelogram guide ( 3, 5 ). At least one ( 19 ) of these pivot points ( 17, 19 ) is adjustable in relation to the parallelogram guide ( 3, 5 ) such that both the energy storage mechanism's ( 15 ) pretension and also its action of force direction change.
1. Body support having a spring arm on which a device is to be mounted, comprising:
a parallelogram guide which is made up of two opposing legs disposed parallel to one another and pivotably attached to two likewise opposing connecting elements that connect the respective ends of the legs with one another on a line in the direction of weight,
an energy storage mechanism, which is supported on two pivot points on the parallelogram guide, in order to compensate a load acting on the parallelogram guide, so that the device is movable through practically its entire range of movement with the force remaining constant,
at least one of these pivot points being adjustable in relation to the parallelogram guide in a direction angled to the direction of weight such that both the distance between the energy storage mechanism's pivot points and also the angle between a longitudinal axis of the energy storage mechanism and the direction of the load acting on the parallelogram guide change, whereby both the energy storage mechanism's pretension and also its action of force direction change; and
a positioning element which supports the adjustable pivot point on the parallelogram guide, the positioning element being operable by only one actuating element.
2. Body support according to claim 1 , in which the positioning element links the adjustable pivot point with one of the two connecting elements, whilst a fixed pivot point of the energy storage mechanism is supported on a first leg of the parallelogram guide.
3. Body support according to claim 1 , in which the positioning element is linearly movable to alter the pretension and the action of force direction of energy storage mechanism.
4. Body support according to claim 1 , in which at least one slot is provided in the positioning element by way of which it is linked to the parallelogram guide, whereby the size and shape of this slot determine the extent of the positioning element's possible displacement in relation to the parallelogram guide.
5. Body support according to claim 1 , in which the positioning element is movable along a curve to alter the pretension and action of force direction of the energy storage mechanism.
6. Body support according to claim 1 , in which the positioning element is engaged with a control curve formed in a second leg of the parallelogram guide such that the angle position and spring force of the energy storage mechanism are dynamically influenced on deflection of the parallelogram guide.
7. Body support according to claim 1 , in which the energy storage mechanism has at least one compression spring.
8. Body support according to claim 1 , in which the energy storage mechanism has at least one tension spring.
9. Body support according to claim 1 , in which two parallelogram guides are present and linked to one another by way of a coupling element.
10. Body support according to claim 1 , further with an attachment, by way of which it can be attached pivotably to a belt or harness, and a holder for the attachment of a camera.
11. Body support having a spring arm on which a device is to be mounted, comprising:
a parallelogram guide which is made up of two opposing legs disposed parallel to one another and two likewise opposing connecting elements that connect the respective ends of the legs with one another; and
an energy storage mechanism having at least two tension springs connected by a cable running around a deflection pulley, which is supported on the parallelogram guide, in order to compensate a load acting on the parallelogram guide, so that the device is movable though practically its entire range of movement with the force remaining constant,
the deflection pulley being adjustable in relation to the parallelogram guide such that both the energy storage mechanism's pretension and also its action of force direction change.
12. Body support according to claim 11 , in which the positioning element is linearly movable to alter the pretension and the action of force direction of energy storage mechanism.
13. Body support according to claim 11 , in which the positioning element is movable along a curve to alter the pretension and action of force direction of the energy storage mechanism.
14. Body support according to claim 11 , in which the positioning element is engaged with a control curve formed in a second leg of the parallelogram guide such that the angle position and spring force of the energy storage mechanism are dynamically influenced on deflection of the parallelogram guide.
15. Body support according to claim 11 , in which two parallelogram guides are present and linked to one another by way of a coupling element.
16. Body support according to claim 11 , further with an attachment, by way of which it can be attached pivotably to a belt or harness, and a holder for the attachment of a camera.