JPH04133014A - Reflecting mirror support mechanism - Google Patents

Abstract

PURPOSE:To easily and accurately adjust a force that a load shaft outputs by providing force adjusting mechanisms which adjust the force that the load shaft outputs to the arms of a reverse surface and flank support lever which constitutes the mechanism respectively. CONSTITUTION:Plural weights which are different in weight value are provided on the arm of the reverse surface and flank support lever, which is a unit support mechanism constituting the reflecting mirror support mechanism, on the opposite side from a support side. An error generated when the weight 7a of the force adjusting mechanism is adjusted in position by 'lever' theory and nuts 10a and 11a are clamped is removed by adjusting the weight 7b which is about 1/50 time as heavy as the weight 7a. An error generated again in the output force of the load shaft owing to the clamping of nuts 10b and 10b is ignored as compared with an error generated after the adjustment of the weight 7a. Consequently, the force that the load shaft outputs can easily be adjusted and the reflecting mirror support mechanism which has high force support accuracy can be realized.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a reflecting mirror support mechanism, and particularly relates to an improvement of a lever J used in the mechanism.

[Conventional technology]

FIG. 5 is a diagram showing a conventionally used supporting mechanism for a reflecting mirror.

In the figure, 1 is a reflecting mirror, 2 is a cell, 8 and 9 are unit support mechanisms, and ``lever J'' is shown. are categorized.

Each of the "levers" is basically constructed as shown in Fig. 6. In the figure, 3 is the load shaft that supports the reflector, 4 is the short arm, 5 is the fulcrum of lever J, and 6 is long arm, 7
is a weight, and 10.11 is a nut.

This support mechanism is attached to the fulcrum part 5 of the "lever" or the cell 2, and the load shaft 3 of the "lever" or the side support lever 9 supports the member attached to the side surface of the reflector 1, and the back support lever 8 In this case, each of the mirrors is configured to support a saucer (not shown) attached to the back surface of the reflecting mirror 1.

Next, the operation will be explained.

When the reflecting mirror 1 faces toward the zenith as shown in FIG. 5, the weight of the reflecting mirror 1 acts only on the back support lever 8 and does not act on the side support lever 9. At this time, by appropriately adjusting the weight of the weight 7 of the back support lever 8 and the length of the arm from the fulcrum 5 to the weight 7, the force exerted by the load shaft 3 of the back support lever 8 can be adjusted in advance. It is possible to balance the sum of the above to the weight of the reflecting mirror 1. In this way, the reflecting mirror 1 can be held in the air by supporting the back surface only by the 28 without touching the cell 2. In addition, when adjusting the weight, loosen the nuts 10 and 11 to leave enough space between the weight and the weight, and after adjustment, tighten the weight from both sides so that the weight moves freely when the lever is used normally. prevent this from happening. Note that this adjustment work is generally performed before attaching the "lever" to the cell.

Further, when the reflecting mirror 1 faces in the horizontal direction, the weight of the mirror acts only on the side support levers 9 and does not act on the back support levers 8. In this case, the reflector l is supported only by the side support lever 9 by appropriately adjusting the weight of the weight 7 and the length of the arm from the fulcrum 5 to the weight 7 using the back support. You will be able to hold it in the air.

If the "lever" is adjusted in the zenith and horizontal directions as described above, the side support lever 9 and the back support lever 8 will be adjusted even when the reflector 1 faces in the middle direction between the zenith and the horizontal They share the responsibility of holding the reflecting mirror l in the air.

These "levers" hold the reflector in such a way that its relative position with the cell remains unchanged when the reflector changes its attitude with respect to the direction of gravity, or they form an optical system in which the sub-reflector is opposed to the reflector. When used, in addition to maintaining the relative positional relationship with the sub-reflector and ensuring retention accuracy, it also suppresses gravitational deformation that occurs on the mirror surface and prevents deterioration of the mirror's own imaging ability.
For the purpose of ensuring so-called resolution, the parameters of the ``levers'' such as the weight of the weight, the length of the arm, the number of ``levers'', and the support position on each surface are appropriately selected and installed.

[Problem to be solved by the invention]

The "lever" applied to the conventional reflector support mechanism is constructed as described above, but the value of the force exerted by the load shaft is determined based on the theoretical value of the moment determined from the weight and arm length. However, little attention was paid to the actual setting accuracy.

Additionally, when the weight is actually moved along the arm, there is a problem in that if the direction of the weight movement is changed, the settings do not match the theory due to play and backlash.

Furthermore, ``It is necessary to fix the weight to the arm with some kind of stopper so that the weight does not change its position at will except when adjusting the weight of the lever J, but by setting the weight position, the force exerted by the load shaft can be adjusted accurately. Even if the stopper is set, the function of this stopper is activated after the position of the weight is set, so there is a problem that the setting accuracy of the force of the load shaft deteriorates at that point.

Making settings that take this deterioration into consideration requires experience and intuition, making it an extremely difficult task.

However, in large reflecting mirrors that are expected to have high light-gathering ability, it is necessary to accurately set the force exerted by the load shaft in order to ensure higher holding accuracy and resolution. There is a growing need for functions for this purpose.

The present invention has been made in view of the above-mentioned requirements, and in order to accurately set the force exerted by the load shaft, it is possible to precisely adjust the position of the weight and is equipped with a force adjustment mechanism that allows easy adjustment. The purpose of the present invention is to provide a reflector support mechanism that provides improved reflector support.

[Means to solve the problem]

The reflector support mechanism according to the present invention includes, as its unit support mechanism, an arm supported on a fulcrum, a load shaft attached to one end of the arm and supporting the back and side surfaces of the reflector, and an arm attached to the other end of the arm. In a device using a back and side support lever consisting of a weight, a plurality of weights of different weights are provided on the arm on the weight side of the support lever.

[Effect]

In this invention, in the "lever" which is the unit support mechanism that constitutes the reflector support mechanism, a plurality of weights of different weights are provided on the arm on the opposite side to the support side for back and side support, and the lever is used to apply force. Since the adjustment mechanism is configured, the force exerted by the load shaft can be adjusted easily and accurately by adjusting the heaviest of these weights in order.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a reflecting mirror support mechanism according to an embodiment of the present invention, and in particular, is a diagram illustrating a force adjustment mechanism for supporting the rear surface of the mirror as an example. In the figure, 7a is a weight a, and 7b is a weight b, and the gravity of the weight b is about 11b0 of the weight a. Also 10a, 10b.

11a and llb are nuts.

Next, the operation will be explained.

Here, since the operation of the "lever" itself is the same as that of the conventional example, it will be omitted, and only the operation of the force adjustment mechanism according to the present invention will be explained using the case 28 with back support as an example.

In the force adjustment mechanism of this embodiment shown in FIG. 1, the weight 7a is first adjusted in position according to the "lever" theory, and then the nuts 10a and 11a are tightened.

Tightening the nut sometimes causes an error in the force exerted by the load shaft, so this error can be eliminated by adjusting the light weight 7b. At this time, whether an error occurs again in the force exerted by the load shaft due to the tightening of the nuts 10b and 11b, and this value is normally not a problem because it is about two orders of magnitude lower than the error that occurs after adjusting the weight 7a.

In addition, in the above embodiment, the weight of the weight 7b is the weight of the weight 7a.
Although the ratio is about 0, this ratio is irrelevant to the essence of the present invention and may be set arbitrarily.

Further, in the above embodiment, the weight 7b is replaced by a nut 10b.

Depending on the weight of these nuts, the weight 7b may be omitted as shown in FIG. 2, and the nuts 10b and llb may serve the same purpose.

Furthermore, in the above embodiment, the number of weights required for the force adjustment mechanism is reduced to 2.
It goes without saying that the force adjustment mechanism may be constructed using three or more of these as shown in FIG. 3.

Furthermore, although the embodiment shown in FIG. 1 shows the case where the weight 7a is located closer to the end of the arm than the weight 7b, the order of these may be reversed as shown in FIG.

〔Effect of the invention〕

As described above, according to the support mechanism for a reflector according to the present invention, the force adjustment mechanism for adjusting the force exerted by the load shaft is provided on the back and side support lever arms that constitute the mechanism, so that It is possible to easily adjust the force exerted by the load shaft using the side support lever, which has the effect of realizing a reflector support mechanism with high force support accuracy.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the details of the force adjustment mechanism of the back support lever in the reflecting mirror support mechanism according to one embodiment of the present invention and its configuration, FIG. 2 is a diagram showing the second embodiment of the present invention, and FIG. The figure shows a third embodiment of the present invention, FIG. 4 shows a fourth embodiment of the invention, FIG. 5 shows a conventional reflector support mechanism, and FIG. 6 shows a conventional reflector support mechanism. "" used in the reflector support mechanism
FIG. In the figure, ■ is a reflector, 2 is a cell, 3 is a load shaft, 4 is a short arm, 5 is a fulcrum, 6 is a long arm, and 7.7a. 7b, 7c are weights, 8 is a back support lever, 9 is a side support lever, 10.10a, 10b, 10c, 11° 11a, l
lb and llc are nuts. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] (1) An arm that is disposed on the back and side surfaces of the reflector whose attitude changes with respect to the direction of gravity and is supported by a fulcrum, and a load shaft that is attached to one end of the arm and supports the back and side surfaces of the reflector. and a weight attached to the other end of the arm so that its position can be adjusted, and a plurality of unit bottom and side support mechanisms for supporting the reflector; In a reflecting mirror support mechanism that holds the mirror so that deformation of the mirror surface due to changes in posture is suppressed, the force adjustment mechanism comprises the above-mentioned weights installed at least two per lever, and adjusts the force exerted by the load shaft of the support lever. A reflecting mirror support mechanism characterized by having a mechanism.