WO2010089532A2 - Cale de montage - Google Patents

Cale de montage Download PDF

Info

Publication number
WO2010089532A2
WO2010089532A2 PCT/GB2010/000171 GB2010000171W WO2010089532A2 WO 2010089532 A2 WO2010089532 A2 WO 2010089532A2 GB 2010000171 W GB2010000171 W GB 2010000171W WO 2010089532 A2 WO2010089532 A2 WO 2010089532A2
Authority
WO
WIPO (PCT)
Prior art keywords
mount
plate
fine
adjuster
mounting plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/GB2010/000171
Other languages
English (en)
Other versions
WO2010089532A3 (fr
Inventor
Richard James Taylor
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2010089532A2 publication Critical patent/WO2010089532A2/fr
Publication of WO2010089532A3 publication Critical patent/WO2010089532A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/16—Housings; Caps; Mountings; Supports, e.g. with counterweight
    • G02B23/165—Equatorial mounts

Definitions

  • the present invention relates to a mount, particularly but not exclusively, for a celestial tracking device for tracking the movement of celestial bodies, such as stars, planets and comets typically for use with equipment for locating or recording, such as a camera or telescope, mounted thereto.
  • a celestial tracking device for tracking the movement of celestial bodies, such as stars, planets and comets typically for use with equipment for locating or recording, such as a camera or telescope, mounted thereto.
  • a prior art mount 10 is shown and comprises a base 12 and a rotatable fixture 14.
  • the base 12 attaches to a tripod or other stand (not shown) and the rotatable fixture 14 holds a telescope, camera or other optical equipment (not shown).
  • the rotatable fixture 14 is secured to the base 12 via a main pivot 16.
  • the base 12 houses an adjustment mechanism 18 comprising an altitude adjuster 20 and a pair of opposing azimuth adjusters 22 (only one of which is shown).
  • the altitude adjuster 20 comprises a worm drive 24 that engages a correspondingly shaped gear 26 associated with the rotatable fixture 14. Rotation of the altitude adjuster 20 rotates the fixture 14 about pivot 16 to alter the angle of the optical equipment and hence altitude of the observed object.
  • a mount for mounting an instrument to a stand, the mount comprising a base having at least one upstanding plate, an altitude adjustment mechanism and an instrument mounting plate, the altitude adjustment mechanism rotatably connects between the base and the mounting plate, wherein the altitude adjustment mechanism comprises a coarse adjuster and a fine adjuster each mounted about and capable of rotating the mounting plate about the same axis.
  • the coarse adjuster comprises a coarse adjustment plate attached to the mounting plate and which is rotatably mounted, at the pivot, to the side plate.
  • the coarse adjustment plate defines a series of apertures through one of which a locking pin or bolt, mounted to the side plate, passes to rigidly fix the mounting plate at an approximate a ⁇ d desired altitude.
  • the series of apertures is arranged along an arc defined by a radius from the pivot.
  • the series of apertures has an internal angle between the first and last apertures greater than 90 degrees.
  • each aperture is angularly spaced apart by approximately 15 degrees.
  • the coarse adjuster is capable of rotating the mounting plate by at least 90 degrees.
  • the coarse adjuster is capable of rotating the mounting plate by about 105 degrees in altitude.
  • the fine adjuster is capable of rotating the mounting plate by at least 15 degrees in altitude.
  • the fine adjuster comprises a fine adjustment arm mounted about and capable of rotating the mounting plate about the axis.
  • the fine adjustment arm (58) the distance between the pivot (61, 104) and the fine adjuster (50, 90) is greater than between the pivot (61, 104) and the mounting plate, thus providing a mechanical advantage for the fine adjuster (50, 90) to move the mounting plate (32).
  • the fine adjuster comprises a turning knob attached to a screw threaded spindle that passes through and engages a pivoting spigot mounted to side plate and engaging at its distal end to the fine adjustment arm.
  • engagement between the spindle and the fine adjustment arm is via a rotatable cylindrical member captured in a recess defined by the fine adjustment arm.
  • the spindle comprises a hemispherical end that engages a concave surface defined in the fine adjustment arm.
  • the fine adjuster is rotatably secured to one of the upstanding side plates and comprises a shaft, rotatable via a hand turning knob and having a threaded portion that engages a bearing element captured by the adjustment arm, rotation of the shaft causes the bearing element to translate along the shaft and therefore rotate the mount plate.
  • the fine adjuster is rotatably secured to one of the upstanding side plates via a bearing housed within the upstanding side plate, the bearing is captured between a collar on the shaft and a boss defined by the hand turning knob.
  • the base comprises a static plate and a rotatable plate attached thereto, the rotatable plate having the at least one upstanding plate attached thereto.
  • a fine adjustment mechanism is located between the static plate and the rotatable plate for azimuth rotation of the rotatable plate.
  • a fine adjustment mechanism comprises a screw drive that engages a gear each being associated with one of the static and rotatable plates.
  • a fine adjustment mechanism comprises two adjustment screws threaded through the two side plates respectively to capture either side of a tongue that extends from the static plate.
  • each screw engages the tongue with their ends which are generally hemispherical and sides of the tongue and which themselves comprise concave surfaces.
  • Figure 1 is a side view of a prior art mount that attaches to a tripod and holds a telescope, camera or other optical equipment;
  • Figure 2 is a perspective view of a mount particularly suitable for securing a celestial tracking device to a stand and in accordance with a first embodiment of the present invention
  • Figure 3 is a side elevation cut away of the mount shown in Figure 3;
  • Figure 4 is a perspective view of a mount particularly suitable for securing a celestial tracking device to a stand and in accordance with a second embodiment of the present invention
  • Figure 5 is a reverse perspective view of the mount shown in Figure 4.
  • Figure 6 is a perspective view of a mount in accordance with a third embodiment of the present invention.
  • Figure 7 is a cut away side view of a mount in accordance with a fourth embodiment of the present invention.
  • a mount 30 comprises first and second mounting plates 32, 34, a pair of upstanding side plates 36, 38 and an altitude adjustment mechanism 40 therebetween.
  • the second plate 34 comprises a static plate 42, which attaches rigidly to a stand (not shown) and a rotatable plate 44, which is rotatably attached to the static plate 42.
  • An azimuth clamp 46 rigidly holds the plates 42, 44 together at a desired angle (zero as shown) and is releasable to allow rotation therebetween in the azimuth.
  • the azimuth clamp 46 passes through a curved slot 48 defined in the rotatable plate 44 and which is long enough to allow an appropriate degree of rotation of the mount 30.
  • the azimuth fine adjuster 47 comprises a worm or screw drive that engages a gear each being associated with the static and rotatable plates 42, 44 respectively.
  • the screw drive and gear are not shown, but are similar to those shown in the prior art Figure 1 as items 24 and 26.
  • the mounting plate 32 and hence optical equipment mounted thereto are adjusted in altitude by the altitude adjustment mechanism 40.
  • the altitude adjustment mechanism 40 comprises a coarse adjuster 63 and a fine adjuster 50.
  • the coarse adjuster 63 comprises a coarse adjustment plate 64 attached to the mounting plate 32 and which is rotatably mounted, at a pivot 61, to the side plates 36, 38.
  • the coarse adjuster 63 defines a series of apertures 65 through one of which a locking pin 66 passes to secure it to the fine adjuster 50, thereby rigidly fixing the mounting plate 32 at an approximate and desired altitude.
  • the series of apertures 65 is arranged along a chord defined by a radius from the pivot 61 with the internal angle between the first and last apertures being approximately 105 degrees.
  • Each aperture and the number of apertures are angularly spaced apart such that the fine adjustment is capable of overlapping the angular movement between adjacent apertures.
  • the locking pin 66 is spring loaded to urge the pin through the aperture 65 and a knob would normally be provided to allow easy manual retraction.
  • the locking pin 66 may otherwise be screwed threaded to provide coarse adjustment locking.
  • the angular spacing of the apertures is 15 degrees and the fine adjuster is capable of rotation around +/- 8 degrees thereby 'spanning' the coarse adjustment angular spacing.
  • the fine adjuster 50 comprises a turning knob 52 attached to a screw threaded spindle 54 that passes through and engages a pivoting spigot 56 mounted to side plate 38 (or 36) and engaging at its distal end to a fine adjustment arm 58.
  • Engagement between the spindle 54 and the fine adjustment arm 58 is via a captured and rotatable cylindrical member 60.
  • the cylindrical member 60 is able to rotate within a recess in the fine adjustment arm 58, Rotation of the knob 52 causes the spindle 54 to travel through the pivoting spigot 56 and rotate the fine adjustment arm 58 about the pivot 61 , thereby altering the altitude of the mounting plate 32.
  • a slot 67 is defined in the side piate 36 to allow the locking pin 66 to rotate with the coarse adjustment plate 64 and fine adjustment arm 58 during fine adjustment.
  • an advantage of the altitude adjustment mechanism 40 is that the fine adjustment arm 58 is longer that the distance between the pivot 61 and a front surface of the mounting plate (and/or securing pin 66), thus providing a lever meaning that a relatively large movement of the spindle translates to a relatively small rotation of the mounting plate 32 thus the mechanism 40 has a high precision movement.
  • the long lever (fine adjustment arm 58) also reduces the load passing through the spindle 54, spigot 56 and cylindrical member 60, again advantageously providing a high degree of rigidity to the optical equipment. It should be noted that the fine adjustment arm 58 and coarse adjustment plate 64 are locked together, via the locking pin 66, once the coarse adjustment/altitude has been selected by the user.
  • the first and last apertures being approximately 105 degrees (+/-10 degrees) advantageously allows the mount to be used in both the Southern and Northern Hemispheres. Furthermore, this arrangement is capable of accommodating relatively poorly levelled stands or tripods whilst retaining the necessary altitude range.
  • the mount of the present invention is compact and therefore is lighter and more suitable for manual transportation when compared to the prior art mounts.
  • This mount 30 further comprises an altitude clamping lever 70 having a bolt that extends through the two side plate 36, 38, the fine adjustment arm 58 and coarse adjustment plate 64 to be secured to a nut 72.
  • the altitude clamping lever 70 is positioned to be rotated about pivot 61 and because of this location and its position above the mounting plate it is advantageously located to provide a high degree of rigidity and security to prevent unwanted rotation of the optical equipment.
  • This second mount 30 is operated for altitude adjustment in a similar way to the first embodiment with respect the fine adjustment arm 58 and coarse adjustment plate 64 except that now, once the correct fine adjustment has been made the mount is clamped securely in place by the altitude clamping lever 70.
  • the fine azimuth adjustment mechanism which in this second embodiment comprises two adjustment screws 74, 76 threaded through the two side plates 36, 38 respectively to capture either side of a tongue 78 that extends from the static plate 42.
  • the ends of each screw 74, 76 are hemispherical 75, 77 and engage concave surfaces 79, 81 either side of the tongue 78.
  • the curved nature of the screw ends and concave surfaces means that where the two plates 42, 44 are angled relative to one another the engagement is always at right angles thereby the load path is always along the screw's axis. In this way the screws 74, 76 are not subject to bending moments which may otherwise affect the mechanism's accuracy.
  • the fine altitude adjustment mechanism is configured.
  • the spindle 54 comprises a hemispherical end that engages a concave surface 59 defined in the fine adjustment arm 58.
  • the altitude clamping lever 70 has three positions, locked, partially locked and free to rotate. The coarse adjustment the altitude clamping lever 70 will allow free rotation of the coarse adjustment arm 58; however, for fine adjustment the lever 70 is positioned in a partially locked position.
  • the lever 70 provides a degree of resistance to the fine adjustment spindle 58 enabling stable, precise movement. Once the fine adjustment has the mount plate in the correct position the lever is tightly locked position.
  • FIG. 6 is a perspective view of a mount 30 in accordance with a third embodiment of the present invention and the same reference numerals used previously are used here to denote the same elements; no further description is necessary for these alike elements.
  • This third mount comprises three cramping bolts 82 (one being hidden) to secure the first and second mounting plates 42, 44 together.
  • the upper plate 44 comprises arcuate slots 84 to allow the plates 42, 44 to move or rotate relative to one another permitting coarse adjustment of the mount prior to complete cramping.
  • This third mount 30 differs from the second embodiment in two ways. Firstly, fine azimuth adjustment mechanism comprises similar adjustment screws 74, 76; however, they now beaf against a pin 86 fixed to the lower plate 42 and which extends through an aperture in the upper plate 44. The fine adjustment mechanism now sits within the plan or footprint of the mount plates 34. Thus the mount is more compact. Furthermore the mounting plate 32 may also be positioned so that no part of it extends outside the plan dimension or footprint of the static and rotatable plates 42, 44.
  • a second difference from the previous embodiments is the coarse adjustment arm 58 is now constructed from solid block rather than the plates as previously described.
  • FIG. 7 is a cut away side view of a fourth mount 30 in accordance with the present invention and the same reference numerals used previously are used here to denote the same elements; no further description is necessary for these like elements.
  • This fourth mount is similar to the third embodiment except that it comprises a different altitude fine adjustment mechanism 90.
  • This altitude fine adjustment mechanism or fine adjuster 90 is rotatably secured to one of the upstanding side plates 38 and comprises a shaft 94, rotatabte via a hand turning knob 92 and having a threaded portion 96 that engages a bearing element 102 captured by adjustment arm 58.
  • the fine adjustment arm 58 rotates about pivot 104 thereby rotating the mounting plate 32.
  • the fine adjuster 90 operates similarly the fine adjuster 50 in conjunction with the coarse adjuster as previously described.
  • This fine adjuster 90 is secured to the adjustment arm 58 such that it is capable of positively driving the adjustment arm in each direction, rather than in the earlier embodiments where the spindle 54 only bears on a surface of the adjustment arm, the weight of the mounting plate and apparatus mounted thereon providing a bias onto the spindle.
  • the bearing element 102 is housed within the adjustment arm 58 and is free to rotate; as the shaft 94 is rotated the bearing element 102 travels along the screw thread portion 96 and allows relative rotation between the shaft 94 and the adjustment arm 58.
  • This altitude fine adjustment mechanism 90 is rotatably secured to one of the upstanding side plates 38 via a bearing 98 housed within the upstanding side plate 38.
  • the bearing 98 is captured by a collar 108 on the shaft 94 and a boss 106 defined by the hand turning knob 92; thereby the shaft 94 does not translate along its longitudinal axis when rotated. Again the bearing 98 allows rotation of the shaft relative to the upstanding side plate 38 when the fine adjustment mechanism is driven clockwise or anticlockwise.
  • the mounting plate 32 may be generally triangular in shape to further reduce weight; pins 80 extend from the plate 32 to engage the optical equipment or other instruments.
  • the rotating plate 42 comprises a central circular pocket in its underside which locates on a corresponding central circular boss on the top of the static plate (42)
  • the pin 86 comprises a cap 88 into which a threaded bolt 87 engages through the static plate 42 and rotating plate 44.
  • a shoulder 89 of the cap 88 has a small clearance between it and the rotating plate 44.
  • the pin 86 perform in aforesaid way, but it also provides a safety devise to prevent accidental disengagement of the two plates 42, 44 if the user were to 'over loosen' the bolts 82.
  • the mount might be carrying relatively heavy and expensive celestial equipment and therefore this safety feature is advantageous and convenient.

Landscapes

  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Accessories Of Cameras (AREA)
  • Auxiliary Devices For Music (AREA)
  • Details Of Measuring And Other Instruments (AREA)

Abstract

L'invention concerne une monture (30) destinée à monter un instrument sur un pied. La monture (30) comprend une base (34) possédant au moins une plaque verticale (36, 38), un mécanisme d'ajustement de l'altitude (40) et une plaque de montage de l'instrument (32). Le mécanisme d'ajustement de l'altitude (40) se connecte de manière rotative entre la base (34) et la plaque de montage (32). Le mécanisme d'ajustement de l'altitude (40) comprend un ajusteur grossier (63) et un ajusteur fin (50), chacun monté autour de et capable de faire tourner la plaque de montage autour du même axe (61).
PCT/GB2010/000171 2009-02-04 2010-02-02 Cale de montage Ceased WO2010089532A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0901737A GB0901737D0 (en) 2009-02-04 2009-02-04 Wedge mount
GB0901737.7 2009-02-04

Publications (2)

Publication Number Publication Date
WO2010089532A2 true WO2010089532A2 (fr) 2010-08-12
WO2010089532A3 WO2010089532A3 (fr) 2010-12-23

Family

ID=40469503

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2010/000171 Ceased WO2010089532A2 (fr) 2009-02-04 2010-02-02 Cale de montage

Country Status (2)

Country Link
GB (1) GB0901737D0 (fr)
WO (1) WO2010089532A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102435168A (zh) * 2011-11-15 2012-05-02 苏州信达光电科技有限公司 赤道仪托架之纬度调节机构
CN112546400A (zh) * 2020-12-29 2021-03-26 池彩霞 一种肾内科用透析管固定装置及其使用方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB123456A (en) 1918-05-03 1919-02-27 Joseph Dyson Improved Hand Boring or Hole Forming Tool or Device for use in connection with the Setting or Planting of Potatoes and other Vegetable Seeds or Plants or the like.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3942865A (en) * 1972-02-25 1976-03-09 Rand Alan E Portable telescope
US4671130A (en) * 1985-12-10 1987-06-09 Byers Edward R Drive assembly for astronomical telescope
US20050168811A1 (en) * 2004-02-02 2005-08-04 Mattei Michael F. Fork mounted telescope with full range of travel along the declination axis
EP1898247B2 (fr) * 2006-09-11 2013-10-16 ASTELCO Systems GmbH Support de télescope

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB123456A (en) 1918-05-03 1919-02-27 Joseph Dyson Improved Hand Boring or Hole Forming Tool or Device for use in connection with the Setting or Planting of Potatoes and other Vegetable Seeds or Plants or the like.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102435168A (zh) * 2011-11-15 2012-05-02 苏州信达光电科技有限公司 赤道仪托架之纬度调节机构
CN112546400A (zh) * 2020-12-29 2021-03-26 池彩霞 一种肾内科用透析管固定装置及其使用方法
CN112546400B (zh) * 2020-12-29 2023-10-20 池彩霞 一种肾内科用透析管固定装置

Also Published As

Publication number Publication date
GB0901737D0 (en) 2009-03-11
WO2010089532A3 (fr) 2010-12-23

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