JP4933670B1 - A device for leveling the camera platform using a camera tripod - Google Patents

Abstract

[PROBLEMS] To change the camera angle by rotating in the horizontal direction and changing the elevation and depression angles by maintaining the axis of the camera screw hole of the camera head to be vertical to attach the camera head to the tripod. Even so, it is an object to be able to rotate the camera horizontally while maintaining the horizontal, intentional left-right tilt, elevation angle, and depression angle.
At present, a camera platform is attached to a camera tripod body via an elevator. Therefore, by using a leveling device on the platform, even if the camera tripod body is slightly tilted, that is, even if the major axis direction of the elevator does not match the vertical direction, the leveling device attached to the platform Even if the angle of the camera is changed with the device, the camera can be rotated horizontally while maintaining the horizontal, intentional left-right tilt, elevation and depression.
[Selection] Figure 1

Description

  The present invention relates to an apparatus for leveling a camera platform used for a camera tripod in order to facilitate adjustment of a camera angle.

Conventionally, in order to level the camera platform of the camera platform mounted on the camera tripod, the camera tripod leg is extended and retracted approximately horizontally using a level attached to the camera platform etc., and then tilted. For example, a camera with a pan handle or a tilt handle around a rotation axis assembled in a cross shape provided on the pan head of the schematic diagram of the head portion of El Carmanu 535 shown in FIG. By tilting the table in the front / rear / right / left direction, it is set horizontally by using a level.
Thus, even when the camera is leveled in this way, it is difficult to maintain the level of the camera stand because it cannot maintain the level if the camera is turned to the left or right to adjust the camera angle. This is a difficult task and takes time.

JP-T-2005-521843 Utility model registration No. 3152495

  At present, the horizontal position of the camera mount on the camera platform mounted on the camera tripod is the pan handle as shown in the schematic diagram of the tripod leg extension and, in practice, the Velbon El Carmany 535 in FIG. With the tilt handle, the angle scale and level on the camera stand can be relied on for adjustment. However, this alone is extremely inconvenient for adjusting the front / rear / left / right horizontal of the camera platform on the camera platform when the camera angle is changed.

  In addition, as shown in FIG. 2, generally, a camera platform is attached to the camera tripod body via an elevator, but as shown in Patent Document 1, a ball joint is attached to a portion where the vertical axis of the elevator part is attached to the tripod. A method has been devised in which the leveling of each leg of the tripod is not sufficient to extend the level of the pan head, and the elevator is made vertical with the aid of a level with this ball joint part. However, it is as much trouble as leveling the camera on the ball joint head. Furthermore, the main structure of the tripod must be changed, and those who use the existing tripod must purchase a new tripod itself.

  Furthermore, as shown in Patent Document 2, a free pan head using a ball joint for a tripod main body and a pan head connecting portion can be freely oriented in the direction of the camera, but can be rotated horizontally or vertically. It is difficult to move in a straight line.

  Therefore, the camera angle can be changed by rotating in the horizontal direction or by changing the elevation angle or depression angle by maintaining the camera screw shaft axis of the camera head to be vertical for attaching the camera head to the tripod. However, it is an object to be able to rotate the camera in the horizontal direction while maintaining the horizontal, intentional left-right tilt, elevation angle, and depression angle.

From the above, considering the economy and operability, the tripod body and the elevator angle are not adjusted, and each part of the pan head is not adjusted with a computer etc. A leveling device 12a is installed between an elevator 10a and a platform 11a mounted on a tripod main body portion 10b of a general tripod-type tripod tripod in order to level the platform 11b of the platform even if it is slightly inclined. And

The leveling device 12a includes a base 12b of a leveling device fixed to a camera base 11j on a camera tripod elevator 10a, a turning portion 12h provided on the base, and a horizontal stand 12j provided on the turning portion 12h. Is done.

  With this configuration, from the state where the camera tripod main body portion 10b is slightly inclined, the leveling device base 12b fixed to the camera base 11j on the camera tripod elevator 10a with the camera screw 11d and the base Due to the rotation around the main rotation axis 12i-1 which is the central axis in the thrust direction of the turning unit 12h to be provided and the central axis of the camera screw 11d of the camera base 11j on the elevator 10a of the camera tripod, it is on the pan mounting surface 12l. With the help of an annular or arc-shaped level 14p, a mark 16p indicating the main tilt axis 13i-4 of the leveling device 12a is indicated by a bubble of the annular or arc-shaped level 14p, and a camera tripod elevator 10a. After aligning with the main tilt axis 13i-4 of the upper camera base, the extension line of the sub tilt axis 13i-5 is moved to the rod level 15p by the rotation around the sub rotation axis 12i-2. A structure for performing leveling of the horizontal base 12j that the leveling device 12a to align the rod-shaped spirit level 15p foam to mark 16p that describes near the central portion.

  For the explanation in the drawings, the level used is a ring-shaped or arc-shaped level 14p, a bar-shaped level 15p or a round-shaped level, but these shapes are not necessarily a bar-shaped, ring-shaped, arc-shaped or round-shaped level. It does not have to be a shape, and any shape can be used as long as it can express the level of the horizontal plane alone or in combination.

  In the relationship of each axis, the main rotating shaft 12i-1 is the central axis of the camera screw screw hole 11e of the base portion 12b of the leveling device, and is the rotating shaft of the turning portion 12h of the leveling device.

Also refers to the maximum tilting axis to the main tilting axis 13i-4 is the angle from the main rotating shaft 12i-1 and Majiwa Ri horizontal plane of the horizontal base 12j on surfaces as seen in FIGS. 1 and 2 becomes maximum, the plane The axis perpendicular to the main tilt axis 13i-4 and intersecting with the main rotation axis 12i-1 is defined as a sub tilt axis 13i-5.

  Further, the auxiliary rotating shaft 12i-2 is parallel to the auxiliary inclined shaft 13i-5 and orthogonal to the main rotating shaft 12i-1, and is a horizontal table tightening screw for connecting or fixing the rotating unit 12h and the horizontal table 12j. The center axis 12i-3 is set.

  The main inclined shaft 13i-4 on the platform mounting surface 12l of the leveling device 12a includes a mark 16p and a main rotating shaft 12i-1 marked near the center portion of the ring-shaped or arc-shaped level 14p. The vertical plane is a straight line on the platform mounting surface 12l of the leveling device 12a.

According to the present invention, there is no need to replace a tripod with a tripod that can change the inclination of the elevator with respect to the tripod body, or a pan head that adjusts each part of the pan head as needed by computer control. It is economical to be able to use a general tripod-type tripod in the middle, and even if the camera angle is changed by rotating in the horizontal direction or changing the elevation angle or depression angle while the tripod is slightly tilted, It can be rotated horizontally while maintaining the intentional left / right tilt, elevation angle and depression angle, and is useful for photography.

3D view of leveling device Schematic diagram of the tripod of Belbon El Carmany 535 Schematic diagram of the pan head of Belbon's El Carmany 535 Front view of leveling device Top view of the leveling device (however, the worm is not displayed) Operation explanatory diagram of leveling device

  A camera tripod having a base mounted between an elevator 10a attached to a main body portion 10b of a general tripod-type tripod tripod tripod and a pan head 11a and a horizontal base for leveling the pan base 11b. This is a leveling device 12a for leveling the base 11b of the pan head.

  More specifically, from the state where the camera tripod main body portion 10b is slightly inclined, the rotation of the base portion of the leveling device 12a and the turning portion around the main rotation shaft 12i-1 that is the central axis in the thrust direction, With the help of a bar-shaped, ring-shaped or arc-shaped level 14p, it is leveled with the main tilt axis 13i-4 which is the maximum tilt angle of the camera base 11j on the elevator 10a attached to the body part 10b of the camera tripod. By aligning the mark 16p in the vicinity of the central part of the level 14p in the form of a bar or ring or arc indicating the main tilt axis 13i-4 to be the maximum tilt angle of the device 12a, the sub-rotation shaft of the leveling device 12a Leveling device for pan head using a method in which 12i-2 is placed in a horizontal plane and leveling device 12a of leveling device 12a is leveled with the help of bar-shaped level 15p by rotation around auxiliary rotating shaft 12i-2 12 It is.

  Or it is as much trouble as leveling the camera on the ball joint type pan head, but the base of the leveling device where the upper part becomes the socket or ball head of the ball joint and the auxiliary rotating shaft It is a device consisting of a base and a horizontal base, which has a ball joint ball head or socket at the bottom instead of being connected, and can be fixed and released by the ball joint, and is slightly inaccurate on the horizontal base 12j. Leveling with the aid of a circular level, or relying on leveling the horizontal table 12j by, for example, assembling two bar-shaped levels in the orthogonal direction of the main tilt axis 13i-4 and the sub tilt axis 13i-5. It is the pan head leveling device 12a using the method to do.

  First, as shown in FIG. 2, the camera screw 11d of the camera base 11j on the elevator 10a attached to the body part 10b of the camera tripod is firmly fitted into the camera screw screw hole 11e of the leveling device 12a. The base 12b is fixed. For this purpose, a plurality of protrusions 12f for preventing slipping are provided on the base 12b of the leveling device.

  The central axis of the worm wheel 17s is provided at the upper part of the base 12b of the leveling device so that the central axis of the worm wheel 17s is the same as the central axis of the camera screw screw hole 11e of the leveling device 12a. The base 12b of the leveling device is engaged with the worm 17r of the swivel portion 12h provided through a thrust bearing 12g for reducing the resistance during rotation so as to cover the base 12b of the leveling device. On the other hand, the worm rotating knob 17t having the turning portion 12h attached to the end of the worm 17r is turned to turn.

  The worm wheel 17s may be directly incorporated into the base 12b of the leveling device or may be fixed with screws as shown in FIG.

  And in order to reduce the resistance between the leveling device base 12b and the leveling device swivel portion 12h, between the leveling device base 12b and the holding plate 21y for attaching the leveling device base to the swivel portion A holding plate 21y for sandwiching the thrust bearing 12g and attaching the base part of the leveling device to the swivel part is for a driver for turning a screw for attaching the base part of the leveling device provided to the base part 12b of the leveling device to the swivel part. It fixes to the turning part 12h of the leveling device 12a with the screw | thread 21k for attaching the base part of a leveling device to a turning part with a driver from the hole 21e.

  The use of the worm gear in this way also has the purpose of preventing the swiveling portion 12h from being inadvertently rotated and displaced relative to the base portion 12b of the leveling device.

  That is, first, by the above structure, the worm rotation knob 17t is turned to turn the turning portion 12h, and the bubble of the ring-shaped or arc-shaped level 14p provided on the turning portion 12h is removed from the main inclined shaft 13i- of the leveling device 12a. 4 is set so as to include the main tilt axis 13i-4 of the leveling device 12a in the vertical plane including the main tilt axis 13i-4 of the camera base on the camera tripod elevator 10a.

  The mark 16p indicating the main inclined axis 13i-4 of the leveling device 12a referred to here is a surface that is orthogonal to the auxiliary rotating shaft 12i-2 of the leveling device 12a and includes the main rotating shaft 12i-1 of the leveling device 12a. Is a position in the vicinity of the ring-shaped or arc-shaped level 14p provided in the turning portion 12h.

  Next, the leveling device 12a is rotated around the center axis of the leveling device clamping screw of the leveling device 12a, that is, the sub-rotating shaft 12i-3, so that the sub-level on the platform mounting surface 12l of the leveling device 12a is rotated. The tilt axis 13i-5 is positioned at a right angle to a vertical plane including the main tilt axis 13i-4 of the camera base on the camera tripod elevator 10a and in a horizontal plane.

  For this purpose, as shown in FIGS. 1, 4, and 5, the leveling device 12 a has a valley-shaped groove on the upper part of the swivel portion 12 h having the sub-rotating shaft 12 i-2 near the valley bottom. The lower part of the horizontal platform 12j of 12a has a mountain-shaped projection having a sub-rotating shaft 12i-2 having the same axis as the sub-rotating shaft 12i-2 at the upper part of the turning portion 12h of the leveling device 12a.

  This chevron-shaped protrusion has a sharper chevron than the trough-shaped groove having the sub-rotation shaft 12i-2 on the swivel part 12h of the leveling device 12a near the bottom so that it can rotate around the sub-rotation shaft 12i-2. To do.

  As described above, the pan head mounting surface 12l on the leveling device 12a becomes horizontal regardless of the inclination of the tripod, and the vertical axis of the pan head 11a on the top can be aligned with the vertical direction.

  The main tilt axis 13i-4 of the camera stand on the camera tripod elevator 10a referred to here is the camera stand on the camera tripod elevator 10a when the camera tripod main body portion 10b is slightly tilted when the tripod is installed. That is, a straight line connecting the highest point on the surface that is normally the pan head mounting surface 121, the central axis of the camera screw 11d, and the lowest point.

  That is, water provided on the swivel part 12h of the leveling device 12a so as to be orthogonal to the vertical plane including the main inclined shaft 13i-4 of the leveling device 12a and having the same axis as that of the auxiliary rotating shaft 12i-2. A horizontal base 12j is provided so as to rotate about the flat base fastening screw 12k.

  That is, the horizontal platform 12j is on a horizontal plane 19w orthogonal to the main vertical plane 18u of the leveling device including the main tilt axis 13i-4 of the leveling device 12a and the main tilt axis 13i-4 of the camera platform on the camera elevator 10a. The horizontal stage 12j of the leveling device 12a is connected to the auxiliary rotating shaft 12i-2 so that the main inclined shaft 13i-4 of the leveling device 12a and the auxiliary inclined shaft 13i-5 orthogonal to the main inclined shaft 13i-4 are included. And leveling the horizontal table 12j of the leveling device 12a by aligning the bubble of the bar level 15p on the horizontal table 12j with the mark 16p in the vicinity of the central portion of the bar level 15p. Is.

  Further, the horizontal base 12j of the leveling device 12a is fixed at the horizontal position by tightening the horizontal base tightening screw 12k provided on the auxiliary rotating shaft 12i-2, and the camera screw 11d provided on the upper part of the leveling device 12a is fixed to the horizontal position. By attaching the camera platform 11a, the camera platform 11a is leveled and verticalized, and the camera can maintain the level even if the camera angle changes.

  In order to mount the camera platform 11a on the leveling device 12a, a camera screw 11d is provided on the leveling device 12j of the leveling device 12a. However, as shown in FIG. 1 and FIG. To facilitate screwing, the camera screw rotating disk 11t with the camera screw 11d fixed inside the upper part of the horizontal table 12j is installed so that it can be rotated with respect to the horizontal table 12j of the leveling device 12a, and the camera screw 11d is rotated. By doing so, the pan head 11a is mounted on the leveling device 12a.

  At this time, the camera screw rotating disk 11t is sufficiently rotated so that the horizontal platform 12j of the leveling device 12a and the camera platform 11a are brought into close contact with each other so as to eliminate slippage on the upper surface of the horizontal platform 12j of the leveling device 12a. Perform non-slip processing.

  As will be described, the central axis of the camera tripod elevator 10a in the thrust direction and the central axis of the camera screw 11d on the horizontal platform 12j of the leveling device 12a can be positioned in a straight line.

  It is difficult to determine the camera's horizontal / vertical accuracy accurately by relying on the expansion / contraction of each leg of the tripod camera unit with the conventional camera platform-separated camera tripod device. Since the horizontal and vertical movements of the camera fluctuate each time the camera angle changes, it is necessary to adjust the horizontal and vertical directions of the camera by adjusting the pan head. However, as described above, when the apparatus for leveling the camera platform used for the camera tripod according to the present invention is used, this trouble is not necessary, so that the camera angle can be changed quickly, which is useful for photography.

10b Tripod body part 10c Leg 11a Pan head 11b Pan head base 11j Camera base 11d Camera screw 11e Screw hole for camera screw 11t Camera screw rotating disk 11m Pan handle 11n Tilt handle 12a Leveling device 12b Leveling device base 12f Protrusion for slip prevention 12g Thrust bearing 12h Rotating part 12i-1 Main rotating shaft 12i-2 Sub rotating shaft 12j Horizontal stand 12k Horizontal stand tightening screw 12i-3 Central axis of horizontal stand tightening screw (ie, sub rotating shaft)
12l Head mounting surface 13i-4 Main tilt axis 13i-5 Sub tilt axis 13m Main tilt axis uppermost point 13n Main tilt axis lowermost point 14p Bar-shaped or ring-shaped or arc-shaped level 15p Bar-shaped level 16p Mark 17r Worm 17s Worm wheel 17t Worm knob 18u Main vertical surface of leveling device 19w Horizontal plane orthogonal to main vertical surface of leveling device 20k Screw for attaching worm wheel to base of leveling device 21k Base of leveling device Screw 21y for attaching to the swivel part 21y Holding plate for attaching the base part of the leveling device to the swivel part 21e Screw hole for turning the screw for attaching the base part of the leveling device to the swivel part

Claims (1)

Elevator camera screw attached to the tripod body or a base screw attached to the camera screw directly attached to the tripod body, and an elevator camera screw attached to the tripod body relative to the base on the base This is a swivel unit that rotates around a rotation axis that has the same axis as the center axis of the camera, and a horizontal base that can be tilted by rotating around a shaft that is installed on the swivel unit and that is orthogonal to the center axis of the camera screw. It is a device that is installed between a tripod and a pan head and leveles the pan head without depending on the adjustment of the tripod and the inclination of the elevator by the ball joint attached to the main part of the tripod . from the state in the body portion of the camera tripod has little inclination, is the central axis of a central axis of the thrust direction of the base portion and the turning portion of the leveling device camera screws around the main rotational axis The main tilt axis that is the maximum tilt angle of the camera base of the elevator attached to the body part of the camera tripod indicated by the bubble of the level attached to the outer periphery of the swivel unit, and the swivel unit by rotating the swivel unit By aligning the mark shown in the vicinity of the central part of the level attached to the main level axis, the main tilt axis that is the maximum tilt angle of the leveling device and the main rotation axis are included in one vertical plane. Thus, the sub-rotation axis perpendicular to the main rotation axis contained in this vertical plane is placed in the horizontal plane, and the rotation of this sub-rotation axis causes the maximum leveling device on the platform mounting surface on the upper surface of the horizontal platform. A method of leveling the leveling device of the leveling device by aligning the bubble on the level level provided at the center of this mark with the mark provided on the line of the sub-inclination axis perpendicular to the main inclination axis as the inclination angle Leveling device for pan head.

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