WO2016036337A1

WO2016036337A1 - A torsion-preventing planar movement joint

Info

Publication number: WO2016036337A1
Application number: PCT/TR2015/050090
Authority: WO
Inventors: Kadir KOYMEN
Original assignee: Kadir Koymen Film Yapimi Sinema Ekipmanlari Uretimi Ithalat Ve Ihracat Anonim Sirketi
Priority date: 2014-09-03
Filing date: 2015-09-03
Publication date: 2016-03-10

Abstract

The present invention is related to a torsion-preventing planar movement joint that carries imaging devices and maintains the viewpoint of the camera by preventing torsion on the supporting arms during shooting from different viewpoints at any position on any plane at different heights. The torsion-preventing planar movement joint of the invention aims to carry imaging devices and change their position along a circular plane. Additionally, it also aims to provide for the planar movement joint to move by either changing or maintaining its angular position relative to ground plane as a result of the position of the imaging device changing.

Description

DESCRIPTION

A TORSION-PREVENTING PLANAR MOVEMENT JOINT

Technical Field

The present invention is related to a torsion-preventing planar movement joint that carries imaging devices and maintains the viewpoint of the camera by preventing torsion on the supporting arms during shooting from different viewpoints at any position on any plane at different heights.

Prior Art

Imaging devices are moved along track rails in order to capture images from different viewpoints during photograph or video shoots. By means of this equipment, it is possible for the camera to be moved steadily and for it to be changed following a certain linear path.

As an example of these, the US Patent application US2011/0102744 can be examined. The system described in the said patent application enables a camera to move along a linear track system mounted to a base.

In addition to all of these, the most basic patent applications of which this patent application can considered to be the successor of are patent applications number TR2013/13723, TR2013/13724, TR2013/13725, TR2013/13726, TR2013/13727, TR2014/02460, TR2014/02469, TR2014/02472 and TR2014/02475, again submitted by the owner of the present invention. The invention the subjects of the said patent applications are particularly likely to be strained in supporting heavy weight camera systems. It is inevitable for the system to be subject to torsion with the effect of the unbalanced load caused by the camera support being placed on one side of the arms to enable the movement being towards both sides. Brief Description of the Invention

The torsion-preventing planar movement joint of the invention aims to carry imaging devices and change their position along a circular plane. Additionally, it also aims to provide for the planar movement joint to move by either changing or maintaining its angular position relative to ground plane as the position of the imaging device changes. Another objective of the invention is to develop components such as belts and pulleys or chains and gears or ropes and reels in order for the weight of the imaging device transferred onto the movement joint to be met. The most important objective of the invention is to enable for loading to be performed from the middle in a single direction and for a center of gravity that follows the axis of movement to overcome the problem of torsion observed in the known joints.

Detailed Description of the Invention The torsion-preventing planar movement joint, provided to achieve the objectives of the invention are shown in the attached figures which are specified below:

Figure 1 - Front schematic view of the torsion-preventing planar movement joint in closed state.

Figure 2 - Top perspective schematic view of the torsion-preventing planar movement joint in closed state.

Figure 3 - Front schematic view of the torsion-preventing planar movement joint, in open state.

Figure 4 - Top perspective schematic view of the torsion-preventing planar movement joint, in open state. The parts observed in the figures are numbered as follows:

1. Joint

2. Body

3. Primary double arm

4. Secondary double arm 5. Supporting slot 6. Drive gear

7. Arm driving gear

8. Support driving gear

9. Support gear

10. Arm motor

11. Tilting motor

12. Cradle

13. Scan motor

14. Bearing

The joint (1) of the present invention is comprised mainly of a primary double arm (3) mounted on a body (2) so as to be moveable angularly, a secondary double arm (4) mounted so as to be moveable angularly with respect to the primary double arm (3) and a supporting slot (5). By means of any support mounted to the supporting slot (5), it is possible for any imaging device to be supported by the joint (1). In the preferred embodiment of the invention, as a result of the said support containing a two axis guide, it is possible for the camera to perform pan and tilt during its linear movement on the movement axis (MA).

The movement to linearly change the camera position of the primary double arm (3) and the secondary double arm (4) is transferred only to the primary double arm (3) via a motor (10). The drive gear (6) fixed onto the body (2) is located at the point where the drive gear (6) primary double arm (3) is connected to the body (2). The angular movements of the primary double arm (3) caused by the arm motor (10) occur on the central axis of the drive gear (6). By this means, the arm driving gear (7) located on the other end of the primary double arm (3) moves in relation to the drive gear (6). By means of the belt or chain or rope connected onto the drive gear (6), the movement transferred to the arm driving gear (7) on the end of the primary double arm causes the an angular movement of the secondary double arm (4) directly connected to the said gear. As a result of the ratio between these two gears being 2/1, the secondary double arm (4) will extend by two units in relation to the double arm (3) against each unit of angular movement of the primary double arm (3) in relation to the body (2). As the arm driving gear (7) angularly moves the secondary double arm (4), the support gear (9) will move around the support driving gear (8) fixed to the primary double arm

(3) . The ratio between the support driving gear (8) and the support gear (9) is ½. By means of the belt or chain or rope connected onto the support driving gear (8), the angular position of the support slot (5) mounted on the support gear (9) on the other end of the secondary double arm (4) in relation to the body (2) will be maintained.

The drive gear (6) and arm driving gears (7) are placed between the rods of the primary double arm (3) which is formed of two long, rectangular or circular sections rods. Similarly, the support driving gear (8) and the support gear (9) are placed between the rods of the secondary double arm (4) which is formed of two long, rectangular or circular sections rods. In addition to gears being placed between the rods of the primary double arm (3) and the secondary double arm (4), by having the support slot (5) being placed between the rods, it is ensured that the center of gravity of the camera is maintained between the rods. It will be possible for the camera to be extended much farther from the body (2) without torsion even in the event of the lengths of the primary double arm (3) and the secondary double arm (4) increasing due to the weight of the camera. In fact, by means of the spacing of the rods within the primary double arm (3) being kept wide and the spacing of the rods within the secondary double arm (4) being kept narrow, the secondary double arm (4) fits inside the primary double arm (3).

By means of the arm motor (10) angularly moving the primary double arm (3) and with the movement of the belt or chain or ropes connecting the gears together in order for the camera to be moved away from or closer to the body (2), the secondary double arm

(4) will also be moved and will shift the supporting slot (5) without moving it angularly. At this point, it is provided for the load of the camera and the arms to be in balance by means of the primary double arm (3) and the secondary double arm (4) formed of two rods. By means of monitoring the angular changes transferred by the arm motor (10) onto the primary double arm (3), the level of the linear shift of the supporting slot (5) from the body (2) can be determined. In such determination, during the linear response of the angular movement the linear displacement response to one unit of angular change when the supporting slot (5) is close to the body (2) in proportion to the sine curve will be greater than the linear displacement response to one unit of change when the supporting slot is farther from the body (2). A control module will be used to calculate the amount of the linear shifting in response to this angular change. By means of the control module enabling it to be driven by arm motor (10), it is possible to continuously monitor the position of the camera on the movement axis (MA).

It was explained above that the movement axis (MA) of the support slot (5) which is moved away from the body (2) linearly will be maintained parallel to the ground. Additionally, it is also possible for the movement axis (MA) to be bent to move the camera closer to or away from the ground when needed. For this tilting action, the cradle (12) which supports the body (2) itself and the whole of the joint together with the tilting motor (11) will be used. By means of opposing pins on the cradle (12) it is possible for body (2) to swing on the cradle (12). However, in order to ensure that this swinging is controlled, one of these pins is directly connected to the tilting motor (11). As a result of the tilting motor (11) is being driven, it is provided for the whole of the movement axis (MA) to be angularly moved.

The cradle (12) itself is not directly connected to a tripod or a similar fixed point. The cradle (12) is supported by a bearing (14) and scan motor (13). The bearing (14) enables the joint (1) and the camera to be supported by being placed on a platform such as a tripod. On the other hand, the scan motor (13) enables the camera to be moved on a movement circle (MC) by rotating the joint (1) on the bearing (14) on its own circumference.

As it monitors all motor movement, the control module continuously knows the position of the camera. The arm motor (10) used to move the camera away from the body (2) along the movement axis (MA) will enable the camera to reach a certain radius. When it is desired to move the position of the camera closer to or farther away from the ground, the height of the camera is adjusted with the body (2) on the cradle (12) tilted using the tilting motor (11). Afterwards, to enable the camera to reach a certain position on the movement circle (MC), the cradle (12) on the bearing (14) is turned using the scan motor (13).

Utilizing the angular movements of the control module realized with all of these motor drives, it is possible for the position of the camera to be changed taking any reset-origin point as reference and for a new position to be calculated based on this origin. The movement amount of all of these motor drives is realized using adjustable equipment such as a step motor.

Monitoring the position of the camera is especially required for a camera to be used for following objects. Thus, following the camera being focused on any object using a 2 axis guide / gimbal, if the distance between the camera and the object is also known, then the control module will be able to determine the position of the object in relation to the origin point using the position, viewpoint and distance value of the camera. Using this information, it will again be the control module that enables the 2 axis guide to accordingly orient the camera to provide for the camera to refocus on the object as a result of each change during the position of the camera being changed.

Claims

1. A joint (1) for carrying imaging devices and maintaining the viewpoint of the camera by preventing torsion on the supporting arms during shooting from different viewpoints at any position on any plane at different heights, consisting of; a primary double arm (3) formed of two long, rectangular or circular sections rods mounted on the body (2) in a manner enabling its angular movement, a secondary double arm (4) formed of two long, rectangular or circular sections rods mounted on the primary double arm (3) in a manner enabling its angular movement, a supporting slot (5) enabling any imaging device to be supported by means of any support mounted onto it, an arm motor (10) moving the primary double arm (3) around the central axis of the drive gear (6), an arm driving gear (7) which is located on the other end of the primary double arm (3), is directly connected to the secondary double arm (4) and moved in relation to the drive gear (6) by means of a belt or chain or rope, enabling the secondary double arm (4) to angularly move, and has a 2/1 ratio with the drive gear (6), a support gear (9) wherein the movement is transferred by means of the belt or chain or rope as it moves around the support driving gear (8) fixed onto the primary double arm (3), which is located on the other end of the secondary double arm (4), and has a ½ ratio with the support driving gear (8) in order to provide for the supporting slot (5) mounted on top of it to maintain its angular position in relation to the body (2) and a supporting slot (5), drive gear (6), arm driving gears (7), support driving gear (8) and support gear (9) placed between the rods of the primary double arm (3) and the secondary double arm (4) in order to ensure that the center of gravity is maintained between the primary double arm (3) and the secondary double arm (4) though the camera is extended away from the body (2); characterized in that it comprises; a cradle (12) enabling the body (2) to swing on itself by means of opposing pins to provide for the camera to be tilted towards or away from the ground and consisting of a tilting motor (11) to which one of these pins are directly connected to in order to control the tilting and a joint (1) consisting of a bearing (14) which includes a scan motor (13) directly connected to the cradle (12) which moves the camera on a movement circle (MC) by turning the joint (1) around itself.

A joint (1) according to claim 1, characterized in that the secondary double arm (4) itself is fitted inside the primary double arm (3) by means of the spacing of the rods within the primary double arm (3) being kept wide and the spacing of the rods within the secondary double arm (4) being kept narrow.

A joint (1) according to claim 1, characterized in that a control module is used to calculate the level of the linear shift of the supporting slot (5) from the body (2) by means of monitoring the angular change transferred by the arm motor (10) onto the primary double arm (3).

A joint (1) according to claim 1, characterized in that the control module can be used to change the position of the camera taking any reset-origin point as reference using the angular movements realized with the drive of the arm motor (10), tilting motor (11) and scan motor (13) drive and for a new position to be calculated based on this origin.

5. A joint (1) according to claim 1, characterized in that the control module is used to calculate the position of the object using a 2 axis guide / gimbal in relation to the origin point, using the position, viewpoint and distance value of the camera, after the camera which will be used to follow the object is focused on any object.

6. A joint (1) according to claim 1, characterized in that the control module is used to enable the 2 axis guide to accordingly orient the camera to provide for the camera to refocus on the object as a result of each change during the position of the camera being changed.