JP6667804B1 - Trestle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mount for attaching a telescope to a leg member. A pedestal 1 includes a first arm portion 4, a second arm portion 5, an extension direction changing portion 6, and a balance adjusting portion 7. The first arm portion 4 is fixed to the leg member 3 so as to be rotatable about the first rotation axis X. The second arm portion 5 extends in a direction substantially orthogonal to the extending direction of the first arm portion 4, and the mounting portion 22 provided on the side surface of the telescope 2 is aligned with the extending direction of the second arm portion 4. The fourth end portion 52 side supports the mounting portion 22 in a cantilever manner so that the mounting portion 22 can be rotated about the substantially orthogonal second rotation axes Y. The extension direction changing unit 6 can change the extension direction of the second arm unit 5 to a position rotated by a predetermined angle around the extension direction of the first arm unit 4. The balance adjusting portion 7 extends from the second arm portion 5 to the side opposite to the attachment portion 22, and can hold one or a plurality of adjusting weights 8 at one or a plurality of positions in the extending direction. . [Selection diagram] FIG.

Description

  The present invention relates to a gantry for attaching a telescope to a leg member.

  2. Description of the Related Art Conventionally, two types of mounts, an eccentric mount and an equatorial mount, are known as mounts for fixing a telescope on a tripod so that the direction of the lens barrel can be changed.

  In the azimuth table, the direction of the lens barrel can be changed by two axes of a horizontal axis and a vertical axis (for example, see Patent Document 1). On the other hand, the equatorial mount has the same basic structure as that of the ecliptic table, except that the equatorial mount has a mechanism for aligning the horizontal axis with the ground axis (for example, see Patent Document 2).

JP-A-2017-134296 JP-A-2007-07278

  By the way, there are various types of eclipses such as "seesaw type", "T-shaped type", "double-sided fork type", "single-sided fork type", and among them, as disclosed in Patent Document 1 The “cantilever fork type” pedestal is excellent in that it is lightweight and can be attached to telescopes of various sizes. However, in the case of the "cantilever fork type", it is difficult to use a single mount for both the eclipse mount and the equatorial mount while having the same basic structure for the following reasons.

  For example, as shown in FIG. 3A, when the arm 5 extends in the vertical direction on the graticule table, the lens barrel 21 hits the leg member 32, and the lens barrel 21 cannot be turned in the vertical direction. Therefore, as shown in FIG. 3B, the arm 5 usually extends obliquely upward.

  On the other hand, when the ecliptic table is used as an equatorial mount, as shown in FIG. As shown in FIG. 4A, when the angle plate 9 is sandwiched and the arm table 5 extends obliquely upward and used as a equatorial mount as shown in FIG. As described above, since the center of gravity of the telescope 2 is different from the rotation axis X of the gantry 1, the gantry 1 may rotate by itself due to the weight, and stable observation may not be performed.

  Therefore, an object of the present invention is to provide a mount that can perform stable observation while also serving as a cantilever fork-type graticule and an equatorial mount.

  The present invention is a mount for attaching a telescope to a leg member, the mount having a first end and a second end in an extending direction, wherein the first end is fixed to the leg member. A third arm and a third end extending in a direction substantially perpendicular to a direction in which the first arm extends. A second arm unit connected to the second end of the first arm unit, the second arm unit supporting a mounting unit provided on a side surface of the telescope, An extension direction changing portion capable of changing an extension direction of the second arm portion to a position rotated by a predetermined angle around the extension direction of the first arm portion; and an attachment direction changing portion from the second arm portion to the mounting portion. And the first arm portion extends from the first end portion side to at least one of the opposite side to the second end portion. A lance adjustment unit, wherein the first end side is fixed to the leg member so as to be rotatable around a first rotation axis substantially orthogonal to an extending direction of the first arm unit, A fourth end side cantileverly supports the mounting portion such that the mounting portion is rotatable around a second rotation axis substantially orthogonal to an extending direction of the second arm portion; The balance adjusting section is provided with a gantry characterized in that one or more adjusting weights can be held at one or more positions in the extending direction.

  According to such a configuration, the second arm portion extends obliquely upward from the mounting surface of the leg member when used as a ecliptic table, and the second arm portion when used as an equatorial mount. By extending the portion vertically from the mounting surface, it becomes possible for one stand to serve as both a cantilevered eccentric mount and an equatorial mount. When the gantry 1 is used as an equatorial mount, the extension direction change unit adjusts the extension direction of the second arm unit in the vertical direction, thereby maintaining the balance in the length direction of the telescope and adjusting the weight. By adjusting the position of the telescope, it is possible to maintain the diametrical balance of the telescope. Once adjusted, no matter what position the telescope is in, the gantry is prevented from rotating around the first axis of rotation, and stable observations can be made. Becomes

  When the mount of the present invention is used as an equatorial mount, it is preferable that the first end side is fixed to the leg member via an angle plate.

  According to another aspect of the present invention, there is provided a mount for attaching a telescope to a leg member, the mount having a first end and a second end in an extending direction, A first arm portion having an end portion fixed to the leg member, and a third end portion and a fourth end portion extending in a direction substantially perpendicular to an extending direction of the first arm portion. The third end is connected to the second end of the first arm, and the fourth end supports a mounting portion provided on a side surface of the telescope in a cantilever manner. A second arm portion; and an extension direction changing portion capable of changing an extension direction of the second arm portion to a position rotated by a predetermined angle around the extension direction of the first arm portion. The first end portion is fixed to the leg member so as to be rotatable around a first rotation axis substantially orthogonal to an extending direction of the first arm portion. The fourth end portion cantileverly supports the mounting portion such that the mounting portion is rotatable around a second rotation axis substantially orthogonal to an extending direction of the second arm portion, The second arm portion has an engagement portion with which a balance adjustment portion is engaged so as to extend to a side opposite to the attachment portion, and the first arm portion has the first end. At least one of the engaging portions is provided so as to extend from the portion side to the opposite side to the second end portion, and the balance adjusting portion is provided with one or more of the extending directions. A gantry is provided that can hold one or more adjustment weights in a position.

  When the mount of the present invention is used as an equatorial mount, it is preferable that the first end side is fixed to the leg member via an angle plate.

  ADVANTAGE OF THE INVENTION According to the gantry of this invention, it becomes possible to perform a stable observation, while also using a cantilever fork-type graticule and an equatorial mount.

Explanatory drawing of a use state of a gantry according to an embodiment of the present invention. The perspective view of the gantry according to the embodiment of the present invention. Explanatory drawing of use of a gantry according to an embodiment of the present invention as a eccentric mount Explanatory drawing of use of the gantry according to the embodiment of the present invention as an equatorial mount Explanatory drawing in the case of using the mount according to the embodiment of the present invention as an equatorial mount Explanatory drawing in the case of using the mount according to the embodiment of the present invention as an equatorial mount Explanatory drawing in the case of using the mount according to the embodiment of the present invention as an equatorial mount Explanatory drawing of an adjustment weight according to a modification of the present invention Explanatory drawing of a balance adjusting unit according to a modification of the present invention.

  Hereinafter, a gantry 1 according to an embodiment of the present invention will be described with reference to FIGS.

  The gantry 1 is of a cantilever type and is for attaching a telescope 2 to a leg member 3 as shown in FIG.

  The telescope 2 includes a lens barrel 21 and a mounting part 22 provided on a side surface of the lens barrel 21. The mounting portion 22 is preferably provided at the position of the center of gravity in the length direction of the lens barrel 21, and in the present embodiment, the substantially center portion in the length direction is set as the position of the center of gravity. Therefore, it is assumed that the mounting portion 22 is provided at a substantially central portion in the length direction.

  The leg member 3 includes a leg 31 and a substantially planar mounting surface 32 fixed on the leg 31. In the present embodiment, a tripod will be described as an example of the leg member 3.

  As shown in FIG. 2, the gantry 1 includes a first arm 4, a second arm 5, an extension direction changing unit 6, and a balance adjusting unit 7.

  The first arm portion 4 has a substantially rectangular parallelepiped shape having a first end portion 41 and a second end portion 42. On the first end portion 41 side, the first arm portion 4 is a leg member. 3 is fixed on the mounting surface 32 so as to extend in a direction substantially parallel to the mounting surface 32 (FIG. 1) (in FIG. 2, substantially horizontal direction). In the present embodiment, the first end 41 side is fixed on the mounting surface 32 via a rotating part 43 rotatable about a first rotation axis X substantially orthogonal to the mounting surface 32. Is done.

  The second arm portion 5 has a substantially rectangular parallelepiped shape having a third end portion 51 and a fourth end portion 52. On the third end portion 51 side, the second arm portion 5 The arm 4 is connected to the second end 42 of the first arm 4 so as to extend in a direction substantially orthogonal to the direction in which the arm 4 extends (in FIG. 2, obliquely upward). Further, in the present embodiment, a support portion 53 that can be connected to the attachment portion 22 provided on the side surface of the lens barrel 21 of the telescope 2 is provided on the side surface on the fourth end portion 52 side. With such a configuration, the gantry 1 cantileverly supports the telescope 2.

  The support portion 53 is rotatable about a second rotation axis Y substantially perpendicular to the direction in which the second arm portion 5 extends, and is thereby connected to the support portion 53 via the mounting portion 22. The telescope 2 becomes rotatable about the second rotation axis Y. In the vicinity of the center in the length direction of the second arm 5, an engaging portion 54 that can be engaged with a balance adjusting portion 7 described later is provided.

  The extension direction changing unit 6 changes the extension direction of the second arm unit 5 to a position rotated by a predetermined angle around the extension direction of the first arm unit 4. In the present embodiment, chrysanthemum seats that can be engaged with each other at the tip of the second end 42 of the first arm 4 and the side of the third end 51 of the second arm 5 are provided. The extending direction of the second arm 5 can be changed by changing the position at which the chrysanthemum seat is engaged. The engagement between the chrysanthemum seat of the first arm unit 4 and the chrysanthemum seat of the second arm unit 5 is held by the lock mechanism 61.

  The balance adjusting section 7 is engageable with an engaging section 54 provided on the second arm section 5, and extends from the second arm section 5 to the side opposite to the mounting section 22 in the engaged state. Put out. In the present embodiment, a rod-shaped member is employed as the balance adjusting section 7, and an adjusting weight 8 having a through hole (not shown) can be inserted into the balance adjusting section 7.

  Screws that fit into each other are cut on the outer circumference of the balance adjustment section 7 and the inner circumference of the through hole of the adjustment weight 8, so that the position of the adjustment weight 8 can be moved steplessly along the screws. Thereby, for example, as the position of the adjustment weight 8 is further away from the second arm 5, the center of gravity of the gantry 1 and the telescope 2 moves to the side opposite to the mounting part 22.

  Next, a method of using the gantry 1 having the above configuration will be described.

  First, in the case where the gantry 1 is used as a “weft mount”, as shown in FIG. 3A, when the second arm 5 extends in the vertical direction, the lens barrel 21 is placed on the mounting surface. 32, etc., and the lens barrel 21 cannot be turned in the vertical direction. Therefore, when the gantry 1 is used as a “weft mount”, as shown in FIG. 3B, the extension direction of the second arm portion 5 is adjusted obliquely upward by the extension direction changing portion 6. It is preferable to use it.

  On the other hand, when the gantry 1 is used as an “equatorial mount”, as shown in FIG. 4, a triangular prism-shaped angle plate 9 is mounted on the mounting surface 32 of the leg member 3 and then the first arm 4 is rotatably fixed to the angle plate 9 on the first end 41 side. Since the angle of the angle plate 9 is set to (90 degrees-latitude), the mounting of the angle plate 9 makes it possible to use the gantry 1 as an “equatorial mount”.

  FIG. 5 is a view of the lens barrel 21 viewed from the direction P in FIG. Here, as in the case where the second arm portion 5 extends obliquely upward from the angle plate 9 as in the case of using as a "weft table", as shown in FIG. X is a position shifted from the position of the center of gravity in the length direction of the lens barrel 2 (in the present embodiment, substantially at the center). Therefore, the height difference between the two ends 21a and 21b in the length direction of the telescope 2 (lens barrel 21) due to the inclination of the angle plate 9 causes the end 21b farther from the first rotation axis X to be downward. (FIG. 4A), the gantry 1 may rotate around the first rotation axis X without permission.

  On the other hand, as shown in FIG. 5B, when the second arm 5 extends vertically from the angle plate 9, the first rotation axis X is the center of gravity in the length direction of the lens barrel 21. Since the position coincides with the position (substantially the center portion in the present embodiment), the distances from both ends 21a and 21b of the telescope 2 (barrel 21) from the first rotation axis X become equal, and the gantry 1 Unintentional rotation about the first rotation axis X is prevented. Therefore, when the gantry 1 is used as an “equatorial mount”, as shown in FIGS. 4B and 5B, the extension direction changing unit 6 causes the extension direction of the second arm unit 5 to extend. Is preferably adjusted in the direction perpendicular to the angle plate 9 before use.

  Here, as an advantage of the cantilever type gantry 1, there is a point that telescopes 2 of various sizes can be attached. However, in many cases, unlike FIG. 5, as shown in FIG. The rotation axis X is shifted from the position of the center of gravity in the diameter direction of the telescope 2 (the lens barrel 21) (in the present embodiment, substantially at the center). Therefore, even if the balance in the length direction of the telescope 2 (barrel 21) is maintained, the balance in the diametric direction of the telescope 2 (barrel 21) is not maintained. The gantry 1 is mounted on the first rotating shaft so that the end 21d farthest from the first rotating shaft X is located below (FIG. 7) due to the height difference between the two ends 21c and 21d in the diameter direction of the lens barrel 21). There is a possibility that it will rotate around X without permission.

  Therefore, in the gantry 1 according to the present embodiment, the position of the adjustment weight 8 in the balance adjustment unit 7 is adjusted in order to maintain the diametrical balance of the telescope 2 (barrel 21).

  However, regarding the balance in the diameter direction, it is necessary to take into consideration not only the telescope 2 (barrel 21) but also the weight of the gantry 1. For example, when the weight and the diameter of the telescope 2 are large as shown in FIG. Must increase the weight on the gantry 1 (second arm portion 5) side. Therefore, in such a case, the position of the adjustment weight 8 is adjusted so as to be away from the second arm 5. In this case, since the position of the adjustment weight 8 has only been moved, the weight of the gantry 1 (second arm portion 5) side has not actually changed, but the adjustment weight 8 has the second arm portion. It can be considered that the moment increased as a result of moving away from 5, and as a result, the weight on the gantry 1 (second arm portion 5) side increased.

  As described above, when the gantry 1 is used as an “equatorial mount”, the extension direction of the second arm 5 is adjusted by the extension direction changing unit 6 in the vertical direction, so that the telescope 2 (the lens barrel 21) is used. By keeping the balance in the length direction and adjusting the position of the adjustment weight 8, it is possible to keep the balance in the diameter direction of the telescope 2 (barrel 21). Once adjusted, no matter what position the telescope 2 is in, the gantry 1 is prevented from rotating around the first rotation axis X, and stable observation is performed. It becomes possible.

  As described above, the gantry 1 according to the present embodiment allows the extension direction of the second arm 5 to be changed to a position rotated by a predetermined angle about the extension direction of the first arm 4. An exit direction changing unit 6 is provided.

  According to such a configuration, the second arm 5 extends obliquely upward from the mounting surface 32 when the gantry 1 is used as a eccentric mount, and the second arm 5 is used when the gantry 1 is used as an equatorial mount. By vertically extending the arm portion 5 from the mounting surface 32, it is possible to use a single gantry 1 as a cantilevered eccentric mount and an equatorial mount.

  In addition, the gantry 1 according to the present embodiment further includes a balance adjusting section 7 extending from the second arm section 5 to the opposite side to the mounting section 22, and the balance adjusting section 7 has a plurality of positions in the extending direction. Thus, the adjustment weight 8 can be held.

  According to such a configuration, when the gantry 1 is used as an equatorial mount, the extension direction changing unit 6 adjusts the extension direction of the second arm unit 5 in the vertical direction, so that the telescope 2 (mirror) is used. By maintaining the balance in the length direction of the tube 21) and adjusting the position of the adjustment weight 8, it is possible to maintain the balance in the diametric direction of the telescope 2 (barrel 21). Once adjusted, no matter what position the telescope 2 is in, the gantry 1 is prevented from rotating around the first rotation axis X, and stable observation is performed. It becomes possible.

  In addition, the gantry of the present invention is not limited to the above-described embodiment, and various modifications and improvements can be made within the scope described in the claims.

  For example, in the above-described embodiment, the balance adjusting unit 7 is a rod-shaped member, but may be a member of another shape such as a plate-shaped member as long as the adjusting weight 8 can be held.

  Further, in the above-described embodiment, screws that fit each other are cut on the outer periphery of the balance adjustment unit 7 and the inner periphery of the through hole of the adjustment weight 8, and the position of the adjustment weight 8 is steplessly adjusted along the screw. Although it is possible to move the adjusting weight 8, a method of fixing the adjusting weight 8 with a thumb screw 81 or the like may be used as shown in FIG. Alternatively, it may be movable steplessly or stepwise by a method such as adjustment of friction or formation of unevenness.

  Further, in the above embodiment, one adjustment weight 8 is used, but a plurality of adjustment weights 8 having different weights may be selected according to the situation. Further, a plurality of adjusting weights 8 may be attached to the balance adjusting section 7 at the same time.

  Further, in the above embodiment, the balance adjusting section 7 and the engaging section 54 are provided near the center in the length direction of the second arm section 5, but may be provided at other positions. May be provided.

  Further, in the above embodiment, the balance adjusting section 7 extends from the second arm section 5 to the opposite side to the mounting section 22, but when the second arm section 5 is heavy or the telescope 2 is light. Therefore, it is necessary to increase the weight on the side different from the above embodiment. In order to prepare for such a case, as shown in FIG. 9, a balance adjusting portion 7A extending from the first end portion 41 side of the first arm portion 4 to the opposite side to the second end portion 42 is provided. You may. The balance adjusting section 7A is not limited to the case where it directly extends from the first end section 41 of the first arm section 4 but may extend from the first end section 41 side or via another member. May be extended. The balance adjusting section 7A does not need to be completely opposite to the second end section 42 as long as it extends to the opposite side. The gantry 1 preferably includes both the balance adjusting unit 7 and the balance adjusting unit 7A. However, depending on the weight of the second arm unit 5 or the weight of the telescope 2 to be attached, only one of them is provided. And either one or both are included in the scope of the present invention.

  Further, in the above embodiment, the balance adjusting section 7 (7A) is engaged with the engaging section 54, but may be formed integrally with the second arm section 5 (the first arm section 4). Good.

  Further, the balance adjusting portion 7 (7A) is provided separately, and an engaging portion 54 capable of engaging with the balance adjusting portion 7 (7A) is provided on the second arm portion 5 (first arm portion 4). The gantry 1 is also included in the scope of rights of the present invention.

REFERENCE SIGNS LIST 1 base 2 telescope 3 leg member 4 first arm unit 5 second arm unit 6 extension direction changing unit 7, 7A balance adjustment unit 8 adjustment weight 9 angle plate 21 lens barrel 22 mounting unit 31 leg unit 32 mounting surface 41 first end portion 42 second end portion 43 rotating portion 51 third end portion 52 fourth end portion 53 support portion 54 engaging portion 61 locking mechanism 81 thumb screw X first rotation axis Y second Axis of rotation

Claims (2)

(After correction)
A mount for attaching the telescope to the leg member,
A first arm portion having a first end and a second end in the extension direction, wherein the first end is fixed to the leg member;
The first arm portion extends in a direction substantially perpendicular to the extending direction, and has a third end portion and a fourth end portion, and the third end side is the first arm portion. A second arm portion connected to the second end portion, the fourth end portion supporting a mounting portion provided on a side surface of the telescope in a cantilever manner from an extending direction of the first arm portion; ,
An extension direction changing unit that can change an extension direction of the second arm unit to a position rotated by a predetermined angle around the extension direction of the first arm unit;
A balance extending from the second arm to at least one of a side opposite to the mounting part and a side of the first arm from the first end to the side opposite to the second end; An adjustment unit;
With
The first end portion is fixed to the leg member so as to be rotatable around a first rotation axis substantially orthogonal to an extending direction of the first arm portion,
The fourth end portion is configured to attach the mounting portion to the first arm such that the mounting portion is rotatable around a second rotation axis substantially orthogonal to an extending direction of the second arm portion. Cantilevered from the extension direction of the part ,
When used as an equatorial mount, the first end side is fixed to the leg member via an angle plate, and the extending direction of the second arm portion is determined by the extending direction changing portion, It can be changed in a vertical direction from the angle plate,
The gantry, wherein the balance adjustment section is capable of holding one or more adjustment weights at a plurality of positions in the extending direction. A mount for attaching the telescope to the leg member,
A first arm portion having a first end and a second end in the extension direction, wherein the first end is fixed to the leg member;
The first arm portion extends in a direction substantially perpendicular to the extending direction, and has a third end portion and a fourth end portion, and the third end side is the first arm portion. A second arm portion connected to the second end portion, the fourth end portion supporting a mounting portion provided on a side surface of the telescope in a cantilever manner from an extending direction of the first arm portion; ,
An extension direction changing unit that can change an extension direction of the second arm unit to a position rotated by a predetermined angle around the extension direction of the first arm unit;
With
The first end portion is fixed to the leg member so as to be rotatable around a first rotation axis substantially orthogonal to an extending direction of the first arm portion,
The fourth end portion may be configured to attach the mounting portion to the first arm such that the mounting portion is rotatable about a second rotation axis substantially orthogonal to an extending direction of the second arm portion. Cantilevered from the extension direction of the part ,
When used as an equatorial mount, the first end side is fixed to the leg member via an angle plate, and the extending direction of the second arm portion is determined by the extending direction changing portion, It can be changed in a vertical direction from the angle plate,
The second arm portion has an engagement portion with which a balance adjustment portion is engaged so as to extend to a side opposite to the attachment portion, and the first arm portion has the first end. At least one of an engaging portion engaged so as to extend from the portion side to the opposite side to the second end portion,
The gantry, wherein the balance adjustment section can hold one or more adjustment weights at a plurality of positions in the extending direction.

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