JP2002125140A - Support for supporting television camera in tilt state - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a support for supporting a television camera in a tilt state that smoothly and easily moves a television camera, keeps a balance, allows the television camera to come to rest at a given tilt angular range without the need for an additional support jig, can easily adjust its adjustment mechanism against cameras with different weights, and can keep the gravity center on its support jig even in the case of television cameras having different heights. SOLUTION: The support for supporting a television camera in a tilt state consists of a base, a camera support that is supported to the base in a tiltable way around a 1st horizontal axis even at a neutral position or an upward position, and a balance mechanism that supports the camera support with a load at the upward position or at an optionally turned position from the upward position.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for tilting and supporting similar articles including a television camera, a projector, and a video camera. Desirably, such a tilt support device tilts the article smoothly and easily and maintains balance. Therefore, where the tilting support device is set within a given tilting angle range, it can stand still without additional support. The balancing mechanism must be easily adjustable for cameras of different weights and must maintain its center of gravity at different heights on the support. UK Patent No. 2189042
The specification discloses a base and a support member for supporting an article on the base, wherein the support member can be tilted about the support shaft on the base anywhere in the neutral position, and the center of gravity is on the support shaft. It is in. The guide member is supported on a pivot shaft on a support member that can be offset relative to the support shaft. The guideway is pivotally supported on the base, slidable within the guide member, and intersects with the spindle when the support member is in the neutral position. The support member is tilted from a neutral position by a resilient device located in the guideway, the resilient device bends, and a reaction is generated in the support member in which the equilibrium moment of the tilted position of the center of gravity is equal. To accommodate cameras of different weights, and also to accommodate the center of gravity at different positions on the support member, the guide member is provided with the spring device as a preliminary load on the base in relation to the weight of the article and the position of the center of gravity. As an adjusting device. The present invention seeks to provide a tilting support device for a television camera or similar article, wherein the tilting support is provided on the base about a first horizontal axis for either the base, neutral or upper position. Camera support, holding the support at an upper position or at any rotational position to move the load from the upper position, one end of which is coupled to the support at an eccentric position with respect to the first horizontal axis A balancing mechanism having an elongated guideway, wherein the guideway is rotatable about another horizontal axis remote from the first horizontal axis and slidably engages on the base, and moves from the neutral position to a second A guide member slidable on a guide path by tilting to one horizontal axis. When the support is tilted from a neutral position, the guide member is stopped to apply a balancing force to control the movement of the guide member on the guide path. To work with the piece A load-type resilient mechanism, and a support device for adjusting the movement of the guide member along a line where the first horizontal axis and the other axis intersect, and adjusting the preload of the resilient mechanism by this adjustment. In each of the set positions, the guide member can be moved linearly by a base and a pair of links movably connected to the guide member. Preferably, the first horizontal axis and the other axis are set horizontal, and the guide member is movably supported by the link along a horizontal line intersecting the first horizontal axis and the other axis. It is. In the means for adjusting the guide member, an axis rotating about a support shaft on the base is linearly supported, this axis passing through the first horizontal axis and the other axis, and this axis has A male screw is provided which is engaged with a female screw provided in a part of the hole of the guide member, so that the rotation of the shaft adjusts the position of the guide member. More specifically, the guide member has a female threaded hole in the portion of the shaft where the male screw engages. In any of the adjusting actions, at the remote end, the stop piece for the resilient member is on the elongated guide member, and is eccentrically connected to the tilt support from the terminal, and the resilient member is connected to the stop piece and the guide member. Move between. Also, in any of the above adjustments, two or more guideways are connected in parallel below the tilting support, and two or more guide members are pivotally connected about the other axis. Is engaged. Next, an embodiment according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is a partially cutaway side view of a tiltable television camera support with an adjustable balancing mechanism. FIG. 2 is a longitudinal sectional view in FIG. FIG.
FIG. 2 is a detailed view of a camera tiltably supported on a base and exemplarily shows a part of a balancing mechanism for a support member. FIGS. 4 and 5 are enlarged perspective views of the balancing mechanism. 1 and 2 show a camera tilt support device for a television or a projector.
The camera is supported and accommodated in a pedestal or a support similar thereto in a cylindrical housing 10 integrally formed with the camera. A balance mechanism 12 for tilt control for supporting the camera (the details thereof will be described later) is set in the housing 10. The casing 10 has a vertical front partition 13, and a control knob 14 is supported by the front partition 13 as a control device for adjusting the balance. The details of these adjustment control devices will be described later. In FIG. 3, the base is exemplarily indicated by reference numeral 15, and the camera support is indicated by reference numeral 16 and is supported on the base 15 so as to be tiltable about a horizontal axis. Base 1
5 comprises a bottom plate 17 having two upstanding side walls 18. Two large concentric holes 19 are provided in each of the side walls 18. The camera support 16 includes a top plate 20, and the camera is supported by a side wall 21 extending below the top plate 20. A cylindrical hub 22 is provided concentrically on the inner surface of the side wall 21 and rotatably supported in the through hole 19. The camera support 16 is rotatably supported about the horizontal axis, and can be tilted with respect to the base 15 from above or from a neutral position. If necessary, a flat or roller bearing may be set in the through hole 19 to rotatably support the hub 22. Each of the hubs 22 has an eccentric pin 23 supported by the balancing mechanism 12 and protruding inward. The leverage mechanism 12 is shown in detail in FIGS. A spindle 26 accommodated in a carrier 25 attached to the balancing mechanism 12 is rotatably supported by _a needle roller bearing 26a, and protrudes from one side of the carrier 25. The guide member 27 is pivotally supported by the spindle 26 on one side of the carrier 25. The guide member 27 has a through hole 28, which is usually an elongated guide piece 29 having a right angle in cross section.
Are slidable linearly. A cross piece 30 is connected to one end of the guide piece 29. The cross piece 30 is provided with a leg piece 31 having a concentric through hole 32, in which the eccentric pin 23 engages with the hub 22. ing. The guide piece 29 has an elongated hole 33 through which the spindle 26 can pass, and the spindle 26 can move in the longitudinal direction with respect to the guide member 27.
The spindle of the spindle 26 is set to be horizontal, the hub 22 of the camera support can rotate around the spindle, the cross piece 30 rotates together with the eccentric pin 23, and the support of the spindle 26. The cross piece 30 can be drawn to the guide piece 29 via the guide member 27 by the presence of the space between the shaft and the hub 22. The spring cup 34 is supported by a free end of the guide piece 29, and a spring receiver 35 is provided on the opposite side of the guide member 27.
Are integrally formed. A compression spring stretched between the spring cup 34 and the spring receiver 35 around the guide piece 29 resists the operation of the guide piece 29 in relation to the tilting of the camera support 16 and the guide member 27 with respect to the balancing mechanism 12. I have to do it. The range of force when balancing is carrier 2
5 can be changed by adjusting the position. The carrier 25 is held at its end by a frame 36 supported by long and short links 37, 38, and the pivot pin 3
The link 37, 38 by 7 _a, 38 _a are pivotable. Shorter link 38 is pivotally connected to pivot pin 38 _b at the upper end of the leg 39 to a pair of upright, the leg 39 is formed integrally with the holding plate 40, the holding plate 40 enclosure It is bolted to the bottom of the bottom plate 17 of the body 10. Longer link 37 is pivotally connected to pivot pin 37 _b at the bottom of the leg 39. By supporting the frame 36 with the links 37 and 38, the carrier 25 can be moved linearly along the spindle 26 and the hub 22 on a line intersecting the horizontal axis. A sleeve 41 having a female thread along the longitudinal direction is formed integrally with the carrier 25 as shown in FIG.
The support shaft 42 supported by 3 has a male screw which engages with the female screw of the sleeve 41. One end of the support shaft 42 protrudes from the front partition 13, and a control knob 14 is attached to the end of the support shaft 42. The rotation of the control knob 14 allows the position of the carrier 25 via the rotation of a female screw inside the sleeve 41. Can be adjusted. The guide member 27 advances and retreats along the guide piece 29 with the advance and retreat of the carrier 25, and the degree of compression of the spring is adjusted by the advance and retreat, so that the load can be changed to match the weight of the camera on the top plate 20 and the position of the center of gravity.
In use, when the camera is tilted on the camera support 16 with the base 15 as a fulcrum, the hub 22 is rotated and the eccentric pin 23 is rotated, whereby the cross piece 30 is moved upward from the neutral position according to the tilt direction. Or tilt it down. The guide piece 29 is pulled through the guide member 27 against the compression action of the spring by the tilting of the cross piece 30 with the spindle 26 as a fulcrum, and the tilting member is held at a predetermined position moved from the neutral position by the force of the balancing mechanism. Let it. In the adjustment operation, when a certain position is set from a neutral or upper position with an appropriate balancing force, a corrected balancing force is automatically generated by the balancing mechanism 12 over the entire tilt range given by the camera support 16. You.
When the camera is set on the top plate 20 by changing the weight or the position of the center of gravity, the balance mechanism 12 is easily adjusted by the control knob 14 to change the compression force of the resilient member in advance.

Continuation of front page    (71) Applicant 501015965             WESTERNWAY BURY ST             EDMUNDS SUFFOLK 1P33               3TB

Claims (6)

[Claims] 1. A base, a camera support tiltably supported on a base about a first horizontal axis relative to either a neutral or upper position, any load for moving a load from or above the upper position. A balancing mechanism comprising an elongated guideway, one end of which is coupled to the support at an eccentric position with respect to the first horizontal axis, holding the support in a rotational position, wherein the guideway is from the first horizontal axis. A guide member that is rotatable about a horizontal axis and slidably engages on the base and is slidable on the guide path by tilting from the neutral position to the first horizontal axis. A preload-loaded spring mechanism that operates between a guide member and a stopper to apply a balancing force to control the movement of the guide member on a guide path when the support is tilted from the first horizontal shaft; Adjusts the movement of the guide member along the line where And a support device for adjusting the preload of the spring mechanism by this adjustment.In each set position, the guide member can be moved linearly by a base and a pair of links movably connected to the guide member. A tilting support device for a television camera or an article similar thereto. 2. The first and other axes are set at a fixed interval in parallel with each other, and the guide member is mounted on a link so as to move along a parallel line intersecting the first and other axes. The tilt support device according to claim 1, which is supported. 3. A device for adjusting a guide member in a straight line includes:
A support shaft rotatably supported on a base about an axis extending along a linear body passing through the first and other shafts, the support shaft engaging a part of the guide member; The screw hole is formed, and the position of the guide member can be adjusted by rotating the support shaft.
Alternatively, the tilt support device according to claim 2. 4. The tilting support device according to claim 3, wherein the guide member has a screw hole for engaging with a male screw of the support shaft. 5. An elongate guide member comprising a spring stop, at an end eccentrically connected to the spring tilting support, and operative between the stop and the guide member. The tilt support device according to any one of claims 1 to 4. 6. Two or more guideways are connected side by side to the tilting support and are engaged by two or more guide members movably connected around said other axis. The tilt support device according to claim 1.