JPS5926616A - Universal spherical surface seat mount - Google Patents

Abstract

PURPOSE:To allow the fine adjustment in any direction by one action by constructing the fine-adjusting lever apparatus with a contact member that contacts the spherical surface of a ball shaft, pressing means that presses said contact member against the ball shaft and pivotable control lever. CONSTITUTION:A sliding member 24 which is energized by a compression spring 23 is slidably housed inside the fine control lever 22. The sliding member 24 has a protrusion 24a, and a contact member 25 having a conical inner surface that contacts the spherical surface of the protrusion is energized by the compression spring 23 so as to area-contacts the spherical surface of the ball shaft 14. The fine-adjusting lever 22 is made pivotable around the spherical part 22a, and outer cylinders 5, 6 of the spherical seat are made movable around the ball shaft 14 in response to the pivoting movement of the fine-adjusting lever 22.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to (2) a pedestal that can fix a telescope or the like in any direction, and particularly to a spherical pedestal that can freely move up, down, and turn around a sphere.

BACKGROUND ART Conventionally, a spherical mount in the form of a camera pan head has been used as a convenient telescope mount, for example, for bird observation. This conventional spherical pedestal is easy to handle because it can fix and release the telescope's rotation and elevation in one operation using only one tightening device. However, this type of spherical pedestal does not have a fine movement device that changes its azimuth and elevation angle.
Also, because it is top-heavy, it has the disadvantage that it cannot be operated freely and accurately capture the target within the field of view with medium-sized or larger telescopes that have high magnification and are relatively heavy.

On the other hand, a telescope mount that is widely used for astronomical telescopes and ground-based telescopes and can freely change its orientation and elevation is well known. Some of these ceremonial pedestals are capable of fine movement adjustment, but the rotation and elevation are adjusted using separate fine movement devices, and not only is the structure complicated, but it can also be adjusted in all directions at the same time in one movement. It moves slightly and cannot be fixed. Therefore, with this type of conventional telescope mount, it is difficult to quickly operate the telescope.

The present invention solves the above-mentioned drawbacks of conventional telescope mounts, and provides a flexible spherical mount that is capable of finely adjusting both travel and elevation, and can fix the telescope in its position with a single operation. This is the purpose. For that purpose, in the present invention, a contact member is provided in contact with the spherical surface of the original axis of a spherical seat mount including an original axis and a spherical bearing having a spherical seat in contact with the core sphere axis. A fine adjustment lever device having pressure contact means that presses against the original shaft and a swingable operating lever is provided on the spherical bearing, and the original shaft and the spherical bearing are adjusted to the center of the ball according to the swinging of the operating lever. It is characterized by being configured so that there is relative slight displacement between and (.

Hereinafter, the present invention will be described in detail based on embodiments shown in the accompanying drawings.

FIG. 1 is a sectional view showing one embodiment of the present invention, and FIG.
6 is a perspective view of the embodiment shown in FIG. 1 viewed from the left front. In FIGS. 1 to 6, a telescope barrel 1 is slidably held within a barrel holding band 2 and fixed by a tightening screw 3 at approximately the center of gravity of the telescope. This lens barrel holding band 2 is fixed by bolts 4 to a protrusion 5a formed at the center of the right outer surface of a bearing body 5 of the spherical bearing in FIG. Further, this bearing body 5 has a cylindrical outer shape as shown in FIG.
A fine adjustment lever device 20, which will be described in detail later, is provided in the upper part, and a cutout groove 5 is formed from the side surface of the circumferential portion where the fine adjustment lever device 2° is provided to the lower part as shown in FIG.
c is provided.

On the other hand, in FIG. 1, a bearing cover 6 is attached to the left side of the bearing body 5 with machine screws 7 as shown in FIG.
The bearing body 5 and the bearing cover 6 constitute a spherical seat outer cylinder. A protrusion 6a is also formed in the center of the outer surface of the bearing lid 6, and a rod 9 that slidably supports the balance weight 8 is fixed to the protrusion 6IIL. A cap nut 10 is provided at the tip to prevent the balance weight 8 from being pulled out. This balance weight 8 is fixed by a tightening screw 11 at a position on a rod 9 that balances the weight of the telescope including the lens barrel holding band 2 around an original axis 14 which will be described later.

Inside the spherical seat outer cylinder formed by the bearing body 5 and the bearing cover 6, there is provided an original shaft 14 that is fixed to the pedestal 13 with bolts 12, and a circular spherical seat formed on the inner wall of the bearing body 5. 5b and a spherical seat ring 15 provided inside the bearing cover 6.
The bearings lined with each are made of material 16.17
It slides in contact with the spherical surface of the original shaft 14 through the . Note that the bearing body 5, the bearing cover 6, the spherical seat 5b, and the spherical seat ring 15 constitute a spherical bearing.

Additionally, six push screws 18 that press the spherical seat ring 15 are provided on the bearing cover 6, and the pressing force thereof generates an appropriate frictional force between the spherical surface of the original shaft 14 and the bearing material 16, 17. , is adjusted so that no matter what direction the telescope balanced by the balance weight 8 is moved, the telescope will remain stationary at an arbitrary position due to the frictional force1.
, furthermore, a clamp knob 1 that fixes the direction of the telescope.
9 is provided on the bearing cover 6 so as to press the original shaft 14 via the spherical seat ring 15. The width of the notch groove 5C of the bearing body 5 is formed to be slightly wider than the diameter of the head 131 of the pedestal 16 as shown in FIG. It is formed long along the circumference so that it can be

FIG. 4 is an enlarged sectional view of the fine adjustment lever device 20 provided on the bearing body 5 of FIG. A fine adjustment lever 22 is located within the spherical surface formed inside.
A spherical m22a formed at one end of is retained.

By adjusting the rotation of one spherical washer 21b of the spherical washer 21, the fine movement bar 22 can freely swing in each direction about the spherical center of the spherical portion 22a with appropriate frictional resistance. It is configured as follows.

Inside the fine adjustment lever 22, there is a hole 2 that passes through its center.
2b, and a slider 24, which is biased downward in FIG. 4 by a compression spring 26, is slidably provided in the through hole 22b. This slider 24 has a protrusion 24ai with a spherical tip formed at the lower part.
The contact piece 25, which has a conical inner surface in contact with the spherical surface of the shaft 4a, is urged by the compression spring 26 so as to come into surface contact with the spherical surface of the original shaft 14. Also, the biasing force of this compression spring 23 is applied to the through hole 2.
The contact piece 25 is adjusted by an adjustment screw 26 that engages with a screw 22c formed in a part of the contact piece 2b, and is configured to generate a relatively large frictional force between the contact piece 25 and the original shaft 14. Further, a relatively long cylindrical cap 27 is fixed to the end of the fine adjustment lever 22 opposite to the spherical portion 22a.

Now, the fine adjustment lever 22 of the fine adjustment lever device 20, which is the main part of the present invention, can freely swing around the spherical part 22a as if it were a joystick. Assuming that they are fixed on a spherical surface, the spherical seat outer cylinders 5 and 6 are fixed on the fine adjustment lever 22.
It moves slightly around the original axis 14 in accordance with the swinging of. FIG. 4A is a principle diagram showing the fine movement. The center 01 of the original shaft 14 and the spherical center 02 of the spherical part 22a of the fine adjustment lever 22 are shown in FIG.
The distance from is l. , the spherical center 0° of the spherical part 22a and the slider 2
If the distance from the center 03 of the spherical surface formed on the protrusion 24a of 4 is 11, and the axis of the fine adjustment lever 22 passes through the spherical center 0 of the original shaft 14 as shown in FIG. 4A, then the fine adjustment lever Spherical seat outer cylinder 5 when 22 is swung by 01,
60 rotation amount, ie, spherical θo='J1/71°, so the right side is l. By configuring the telescope to be sufficiently small compared to the above, the telescope can be finely adjusted in both the vertical and horizontal directions. In order to make this fine adjustment effective, the contact piece 25 must be fixed on the spherical surface of the original shaft 14 while the fine adjustment lever is swinging, and the original shaft 14 must be fixed on the spherical surface of the original shaft 14.
It is necessary for the bearing members 16 and 17 to slide lightly on the spherical surface of the bearing.

Therefore, the frictional resistance F between the original shaft 14 and the bearing material 16.17 (9). and the frictional resistance F1 between the original shaft 14 and the contact piece 25 may be set in the following relationship: F, ) F.

Next, when coarsely moving the telescope, the coarse movement operation is performed by holding the telescope lens barrel 1, but at that time, the fine movement adjustment lever 2
It is desirable that 2 be able to oscillate easily.

Therefore, the frictional resistance F2 between the spherical bearing 21 and the spherical portion 22a needs to be greater than the frictional resistance F2 between the aforementioned original shaft 14 and the bridge piece 25. However, as shown in FIG. 4, when the spherical surface of the protruding portion 24a of the slider 24 is located inside the spherical surface of the spherical portion 22a of the fine adjustment lever 22, F2 and Fl may be equal.

Furthermore, the contact surface of the contact piece 25 that produces the frictional resistance F1 is another frictional resistance F. The bearing that causes F2 is material 16.
17 and the contact surface of the spherical bearing 21, it is desirable that the contact surface be made of a material with a high coefficient of friction, such as hard synthetic rubber, or that the contact surface be lined.

Figure 5 shows the joystick-type fine adjustment lever/4n.
) - sectional view of a fine adjustment lever device 20' showing another embodiment of the device, in which a fine adjustment lever 22 with a spherical part 22'a is shown;
The slider 24', which is slidably held inside the slider 24', has a spherical surface formed at its tip that slides on the spherical surface of the master shaft 14.
5 so as to be able to come into contact with it. Slider 24'
The bridge is always biased away from the bridge 25 by the compression spring 26', and one end surface of the bridge is pressed against the fine adjustment lever 2.
A lever 29 is provided for tightening, which can be pivoted around a bottle 28 installed in the pin 2', and when the lever 29 is squeezed together with the fine adjustment lever 22', the compression spring 23'
The contact piece 25 is pressed against the original shaft 14 through the slider 24' against the urging force of , and the contact piece 25 is fixed on the spherical surface of the original shaft 14. Therefore, the tightening lever 29
While holding the fine adjustment lever 22', move it to the spherical part 22'a.
By swinging around the original axis 14, the direction of the telescope can be finely adjusted around the original axis 14. In addition, in the case of coarse movement, when the tightening lever is released from the hand, the compression on the contact piece 25 is released by the urging force of the compression spring 23'.
Since the frictional resistance between the contact piece 25 and the original shaft 14 is eliminated, the telescope can be coarsely moved more easily than in the embodiment of the fine adjustment lever device shown in FIG.

FIG. 6 shows an embodiment different from the embodiment shown in FIG. 4, in which a lens barrel holding band 2' for holding the telescope barrel 1 is arranged at the base portion of the original axis.

Two balance ways (8', 8') are suspended by hanging pieces q/, 9/ on both sides of the pedestal 16 so that the telescope placed above the original axis is balanced with respect to the original axis. , Clamp knob 1 to secure the telescope
9' and a fine adjustment device 20' are provided on the sides of the bearing cover 6' and the bearing body 5, respectively.

Even if the telescope is placed above the original axis in this way, if the balance weight 8' is placed in a position that balances the telescope and the balance weight 17, the structure of the ball bearings 5, 6, 15, 16, and 17 and the fine adjustment lever can be improved. The internal structure of the device 20 is the same as that shown in FIG. 4, allowing coarse and fine adjustment.

In the embodiments shown in FIGS. 4 and 6, the original axis is the pedestal 1.
3, and the spherical seat outer cylinders 5 and 6 rotate around the fixed original axis 14. In the embodiment shown in FIG. This shows that the telescope is moved slightly by the slight rotation of the original axis. FIG. 7A is a sectional view taken along line A--A of the embodiment shown in FIG.

In FIG. 7, the telescope barrel 1 is attached to a lens barrel holding band 102.
held at approximately its center of gravity by the tightening screw 10
3, it is fixed in that position. Further, the lens barrel holding band 102 is connected to the original shaft 114 via a connecting rod 104. A bearing body 105 that supports this original shaft 114,
A spherical seat outer cylinder is formed by covering the original shaft 114 and including a bearing cover 106 attached to the upper part of the bearing body 105 with machine screws 107 (see FIG. 7A). Notch grooves 106a and 106b are provided on both sides of the bearing M106, respectively, and the connecting rod 104 is fixed to the main shaft 114 by passing through one notch groove 106a, and passing through the other notch groove 106b. A rod 109 that supports the balance weight 108 is fixed to the original shaft 114. The balance weight 108 is fixed in position on the telescope balancing rod 109 by a tightening screw 111. Furthermore, reference numeral 110 is a cap nut that prevents the balance weight 108 from falling off the rod 109.

A cylindrical portion 105a is formed at the lower part of the bearing body 105,
It is rotatably supported by a shaft portion 113a provided on a base 113, and its rotation is fixed by a horizontal clamp knob 112 provided on a cylindrical portion 105a. Further, a circumferential groove 113b is formed in the shaft portion 113a of the pedestal 113, and the tip of the horizontal clamp knob 112 is inserted into this circumferential groove and pressed against the bottom surface of the circumferential groove 113b. 105 is prevented from moving upward and its rotation is also fixed.

The original shaft 114 is a spherical seat ring 11 provided on the bearing cover 106.
5, and a spherical washer 11 provided inside the bearing body 105.
6. The bearings lined by the spherical seat ring 115 and the spherical washer 116 are made of materials 117a,
The spherical seat ring 115 is adjusted by three push screws 118 provided on the upper surface of the bearing cover so that an appropriate frictional resistance is always generated between the spherical surface of the shaft 117b and the spherical surface of the original shaft 114. In addition, the internal through hole 105 of the cylindrical portion 105a of the bearing body 105
b, a conical portion 116 formed at the bottom of the spherical washer 116;
a is fitted and supported, and the original shaft 114 is pressed against the spherical seat ring 115 via its spherical washer 116 by a fine movement clamp knob 119 provided so that its tip is in contact with this conical portion 116a, and the spherical seat Outer cylinder 105,10. [vs 1-
7 and is configured to be fixed.

) On the other hand, a fine adjustment lever device 120 is provided on the outer surface of the bearing body 105 as shown in FIG. 7A.

The structure of this fine adjustment lever device 12G is 1. Since this embodiment is exactly the same as the embodiment shown in FIG. 4, detailed explanation will be omitted. However, during fine movement operation, the fixed bearing body 10
Since the original shaft 114 will be slightly moved with respect to 5, the direction of movement of the original shaft 114, that is, the direction of the movement of the "b8 mirror" will be opposite to the direction of the swinging force of the fine adjustment lever 122. It differs from the one shown in Fig. 4 in that it does so.

In the embodiment shown in FIG. 7, when the fine movement clamp knob 119 and the horizontal clamp knob 112 are loosened, the telescope can move freely. Therefore, it is stopped in the same position.

Operate the telescope by hand to capture the target within the field of view, and first tighten the horizontal clamp knob 112. At that time, the notch groove 106
a, 106t) and the connecting rod 104.0 and the connecting rod 109, so that there is a gap in the horizontal direction between them.

Next, the fine adjustment lever 122 is operated to finely adjust the target so that it is located at the center of the visual field 7, and the telescope standardization is completed by tightening the fine adjustment clamp knob.

The fine adjustment lever device 120 shown in FIG. 7A has a slider 1 biased by a compression spring 123K, similar to that shown in FIG.
24, the contact piece 125 is pressed against the original shaft 114, but like the tightening lever 29 in the embodiment shown in FIG. It may be configured as follows. Further, in the fine adjustment lever device shown in FIGS. 4 and 7A, the contact pieces 25 and 125 are pressed by the urging force of the compression springs 23 and 123,
Using the attractive force of a permanent magnet instead of the urging force of 3,123, the slider 24, 124 and the contact piece 25゜125f are formed of permanent magnets, and the original shaft 14゜114 is made of a ferromagnetic material such as iron. It may be configured such that frictional resistance is generated between the contact piece and the original shaft due to the attractive force of the permanent magnet.

Furthermore, in the embodiment shown in FIG.
Although the contact piece 25 is pressed through the slider 24', an attractive force from an electromagnet may be used instead of this pressing force. That is, the electric switch is linked to the tightening lever 29, and the slider 24
' is made of an electromagnet, and the contact piece 25 and the original shaft are made of a ferromagnetic material such as iron.
What is necessary is to configure it so that it comes into pressure contact with. With this configuration, the electromagnet works only during fine movement, and the action of the electromagnet is canceled during coarse movement, so the telescope can be easily pointed in any direction.

The flexible spherical seat mount of the present invention is not only effective as a mount for a telescope, but can also be effectively used as a mount for a camera having a telephoto lens, etc.

As described above, according to the present invention, a spherical seat is used for the bearing mounting, and the relative slight movement displacement between the original axis and the spherical bearing is performed by joystick-type fine movement operation. The mount according to the present invention is capable of fine adjustment with one action, can quickly set the position toward the target, and can be fixed at the set position with one action.Furthermore, the mount according to the present invention has extremely good operability and has a simple structure. It has the advantage of being simple, relatively lightweight, and inexpensive.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing one embodiment of the present invention, and FIG.
6 is a perspective view of the embodiment shown in FIG. 1 seen from the front left, FIG. 4 is an enlarged view of the fine adjustment lever device shown in FIG. 1, and FIG. Fig. 5 is a sectional view of a different embodiment from Fig. 4;
6 is a perspective view of an embodiment different from the embodiment shown in FIG. 1, FIG. 7 is a sectional view of an embodiment different from FIGS.
Figure A is a sectional view taken along line AA in Figure 7. 5.6, 105.106... Spherical bearing 14.1
14... Original shaft 20, 20', 120... Fine adjustment lever device 22, 22', 122... Operation lever 23
．． 24.24', 29,123.124...Press contact means 25.125...Contact member applicant Nippon Kogaku Kogyo Co., Ltd. agent Takao Watanabe (19) To4 figure 4A Ward Special Publication Showa 59-2661G (7)

Claims (4)

[Claims] (1) In a spherical seat pedestal including an original axis and a spherical bearing having a spherical seat in contact with the original axis, a contact member slidably contacts the spherical surface of the original axis, and a contact member capable of swinging on the spherical bearing. A fine movement adjustment lever device is provided, the fine movement adjustment lever device having a control lever provided therein, and pressure contact means provided on the control lever and engaging with the contact member to press the contact member against the original shaft, the control lever device being configured to swing the control lever. A universal spherical seat pedestal, characterized in that the original shaft and the spherical bearing are configured to be slightly displaced relative to each other about the spherical center of the original shaft. (2) Connect the contact member (25, 125) to the original shaft (14).
The pressing means that presses against the operating lever (2
2, 22', 122) and engages with the contact member (25, 125).
24) and spring means (24, 124) biased to press said slider (24, 124) or said operating lever (1). . 2. A universal spherical seat frame according to claim 1, characterized in that it comprises a tensioning lever (29) grasped together with (22'). (3) The pressure contact means includes the contact member (25, 125)
The contact member (14, 114) is formed as a permanent magnet or an electromagnet so as to be magnetically attracted and coupled to the original shaft (14, 114) through the operating lever (22, 22', 122), and slider (24, 125) engaged with the slider (25, 125)
24', 124). The flexible spherical seat pedestal according to claim 1, wherein (4) The operation lever (22, 22', 122)
The original shaft (14, 114) undergoes slight displacement according to the swinging of the
Alternatively, the spherical bearings (5, 6; 105, 106) support the attachment (1) and the balance means (8, 8', 1
08), the attached object (1) is attached to the original axis (14, 11).
4) The flexible spherical seat pedestal according to claim 1, characterized in that it is configured to be balanced around the spherical center of claim 1.