JPS58149030A - Light shielding blade for light controlling device - Google Patents

Abstract

PURPOSE:To obtain a light shielding blade which is small in operating capacity, has excellent durability and operates smootgly at a high speed, by sandwiching an intermediate layer of small apparent specific gravity with front and rear layers having high specific modulus of elasticity, and changing the lengths of the respective layers so as to make the number of superposed layers less the further from the coupling position with a driving member. CONSTITUTION:Front layers 1- rear layers 3 are superposed near mounting holes 4, 5 but there are no rear layers near the center which consists of only the layer 1 and the intermediate layer 2. Further a preceding end part 1a is constituted of only the layer 1. The layer 1 is required to have excellent resistance to abrasion and light shieldability and high Young's modulues as well as to be small in specific gravity. For example, ceramics or the like are used adequately. The internediate layer 2 may be of plastics or the like as far as these materials are small in specific gravity. Since the layer 3 is preferred to have resistance to abrasion and small specific gravity, ceramics, metals, etc. are used for the same.

Description

DETAILED DESCRIPTION OF THE INVENTION This horn has a light shielding blade for light 5#, that is, a shutter, and a lens with a score of 0 and 1. Movable 1 light plate ◆ O Kai Arashi -.

It is preferable for the above-mentioned light wing machine to operate four times, while keeping the rotational speed small and maintaining sufficient axle load.

To achieve this, there is a need to electrify cars. Conventionally, plastic Yachitan etc. were used for this purpose! Efforts are being made to use a 1mm thick steel plate or to partially thin out a thin plate. In addition, the stress exerted on the material due to inertia that occurs when these blades are operated rapidly is much hotter as they get closer to the drive part, so the thickness of the blades gradually decreases as they move away from the drive part. It has also been proposed to make the thickness of other parts 4 times larger than the thickness of .

However, these conventional 0 separate roots often have the following drawbacks.

Ozu, in the case of four voices simply changing to materials with lower specific gravity,
Either the strength was insufficient, or the electrification in Maku was insufficient.

Secondly, the nine-wing machine, in which the thickness was gradually reduced as it was removed from the drive section, was labor intensive and expensive to manufacture.

SUMMARY OF THE INVENTION Therefore, it is an object of the present invention to provide a light-shielding blade that overcomes these drawbacks and has a rigidity of 69 mm and is easy to fold.

In order to make the light-shielding blade TMT, it is conceivable to make it thinner, but when considering the bending rigidity of the blade, there is a limit to how thin it can be.り鵞υ、han
1 Young's Takuzo ! Intensification t - To calculate the moment of inertia 1. t-f & just make it into a box. If we consider one plate T, its cross-sectional quadratic mm) I, T- In order to reduce the thickness and increase the gutter volume without cutting, we should remove one layer of the continuous part from the neutral axis. The second moment of area is removed! The decrease in 2 is small.

Therefore, since IIa, the present inventors have focused their research on cladding materials, and found that as a light-shielding blade, the true and negative layers should be made of a material with a high specific elastic modulus, and the middle layer should be made of a material with a low apparent specific gravity. Although it is preferable to use a clad material consisting of
Furthermore, the inventors have found that there is no problem in terms of quality even if the slope of the light-shielding blade decreases as it moves away from the vicinity of the connection position with the driving member, and the present invention has been completed.

Therefore, the present invention consists of at least three layers: a surface layer with a high specific elastic modulus, a hexagonal layer, an intermediate layer with a low apparent specific gravity, and a prosthetic surface layer with a specific elastic modulus. The number of layers is decreased from either the surface layer or the surface layer toward the inner layer as the temperature increases.

In the present invention, the surface layer and the surface layer may be composed of not only one layer but also a plurality of layers, but materials with low specific elastic modulus constituting these layers include, for example, BN,
BsN4 + 14cIWsNa, S4C
It is used for ceramics such as B, metals such as B, and other materials such as thin carbon, thin plate-like wire, and thin plate-like diamond. These materials are particularly preferable as light-shielding blade materials because they have excellent abrasion resistance and monotony, and have a high Young's modulus E and low specific gravity. The thickness ratio of these A-side layers or front-to-no layer is usually 1/~V1° with respect to the whole.

0 The intermediate layer may also consist of one layer or two or more layers, but examples of materials with low apparent specific gravity for the intermediate layer include structures with open hollows, foam structures with closed hollows, and fibers. Polyethylene, polypropylene, polyvinyl chloride, polyamide, epoxy*m, phenolic resin, urea resin, polyurethane, polystyrene, etc., which have a visceral structure or film-like structure and have a low specific gravity themselves
Plastics such as unsaturated polyester resins or plastics reinforced with fibers such as glass fibers, carbon fibers, poron fibers, organic polymer fibers, electrified boron fibers, and whiskers are used.

The thickness ratio of the intermediate layer is usually 6/~8 to the entire thickness.
/,. 1! It is appropriate to be direct.

The GadiJ layer may be made of the same material as the surface layer, or may have a different quality. In the present invention, the front side, 71 & side ama-
is not strictly determined and is determined upon the application of the weight.

An adhesive may be used to bond the front and back layers and the intermediate layer, but the intermediate layer itself may also be used as an adhesive.

Next, the present invention will be specifically described by way of examples with reference to the drawings.

Example 1 This example is an example applied to a vertical*a Mitsuo Calplane shutter blade.
0 is a cross-sectional view, code 1 in figure 0 is a surface layer, 2 is an intermediate layer,
3 is the back layer, and 4.5 is a hole for connecting to the 11hs material.

Installation is through hole 4. Near the sO, the surface layer 1 to the back layer are superimposed, but there is no back layer near the center;
(The tip portion 1& is composed of only the surface layer 1.).

Here, the surface layer 1 and the back surface layer 3 are used overlappingly with other members, such as the guide part (not shown), the drive arm, and slide with each other, so they must have high wear resistance. required. Furthermore, since the Vc front layer 1 needs to have a light-shielding ability by itself at the tip 1&, a transparent method is recommended.

(9) Since the layer 411 prior to a11 is not supported by other layers, the rigidity will be insufficient unless the specific elastic modulus is high.

On the other hand, the intermediate layer 2 is, compared to the surface layer 1 and the isolated layer,
! ! There are few requirements for 1 degree higher (if possible, it is better to reinforce the surface layer), and it is sufficient to provide the thickness of the entire blade, 1, and -11 to connect the surface layer. And in a single bird like this, if you get confused by the amount of noise, you can do it with less power.
It is preferable that the specific gravity (15 degrees) of all the surface layers 1 to 3 is small because it can be made to vary.

From the above, it is desirable that the surface layer 1 has excellent abrasion resistance and optical properties, a high Young's modulus E, and a low specific gravity. For example, ceramics and the like are preferably used.

Further, the intermediate layer 2 may be made of plastic or the like if its specific gravity is small. Furthermore, the back layer 3 has a resistance to jlII
It is preferable to use a material that is tough and has a low specific gravity, so a thick mix, metal, etc. are used.

With such a structure, a highly rigid blade can be obtained considering the amount of gutter. In addition, since different types of materials are bonded to different lengths, it is easier to create dramas than with so-called tapered blades, in which the thickness of a single material gradually decreases toward the tip. There is a degree of freedom in which materials can be used as light-shielding blades even if it is possible to make them in one temple, or such materials have no marketability and are not common.
- It is also inexpensive.

Next, let's talk about the specific manufacturing method.

Here, the front layer 1 is made of titanium nitride, which has a high Young's modulus and is relatively tough, and the middle layer 2 is made of epoxy resin, which has particularly excellent adhesive properties. Uses aluminum alloy.

First, the surface layer 1 is made of titanium waxed by hot pressing method.
Alternatively, the intermediate layer 2 is fabricated by a vapor deposition method such as PVD+CVD, and the intermediate layer 2 is lined with epoxy. Screen printing is a suitable method for lining.

Since epoxy resin has good wettability with glass fibers, epoxy resins reinforced with glass fibers may be used to increase strength. Next, a high-strength aluminum alloy of 37N is superimposed on the intermediate layer 2 and bonded. It is also possible to pattern the three layers by removing the buds and etching them with nine bales to leave them in the desired shape. As another 1ill method, it is also possible to use two layers as a substrate and laminate three layers by vacuum evaporation.
If the h4゜ alumite place is a flexible high-strength full mini-9mm alloy in 1, form an alumite layer (19 in the same place),
Young's modulus may also be improved.

As a result, compared to the uniform Wt#lf: blade made of the same cable material with the same thickness ratio, the main cable is the same as the one with the same thickness ratio. 110il1
A blade with 01R structure weighs more than t80-.

In this example, a three-layer structure is used, but this young fruit can also be obtained with a four-layer structure or a five-layer structure.

Embodiment 2 Figures w and 2 are perspective views, and this example shows an example in which the blade of the present invention is applied to a known nine-leaf shutter. Its structure and operation will be explained.

411 pins T, · and lever s installed on the 18th aircraft 6,
1◎ is connected so that it can be repeated.

Further, the levers 9 and 10 are mounted on the shutter base plate 11 and are rotatable around round shafts 12 and 13. Since the pins 1 and 8 and m12.111 form a substantially parallelogram, the s1 blade 6 moves approximately 1,000 times in accordance with the rotation of the levers $ and 1o. However, the second blade 14, the three-legged blade 1
5. The 4th blade 16 and the 5th blade 1T move differently from the horizontal G of the 1st blade. That is, the pin 18 mounted on the 41-blade 6 is rotatably coupled to the 42-blade aircraft 14 and
, a cam 111114 & engaged with the blade 2 is mounted on an arm 18 which is rotatably supported on the shaft 12.
It is provided at the base of 4. Therefore, the movement of the m1 blade 14 is caused by the shape of the pin 200 and the cam 14a via the pin 18 'Xi! ,circle. 1 layer 8 blade aircraft 1S has shaft 13
A cam sleeve 11m is provided at the base of the cam sleeve 11m to engage with the pin 20. Similarly, the rattan 4-blade machine 16 and the broom 6-blade IT are rotatably supported on the shaft 11.
Cams $1@a and IFm that engage with the pin 20 are provided, respectively. The pin 20 is rotatably supported on the bottle shaft 12 and is rotatably connected to the nine levers, and rotates together with the seven levers 1 that rotate about the shaft 12. Power of each blade A#14m, 11m.

1@b, 17m, when the #l1 blade 6 is located above the 1 perch 121 in the figure, the blade becomes an m-foreshadow line and covers the aperture, and the #l1 blade is 7.
Below the perch 21, all the blades are arranged so that they overlap, and the 4 blades are arranged so that all the blades overlap.
It rotates with the JII inside and operates to open and close the JII.

In a focal plane shutter, two sets of such blades are usually prepared, one of which is used as a shutter opening member and the other as a shutter closing member.

Here, the first organic layer is further composed of pins 1 and 1, as explained in FIG. As the distance from s11 increases, the number of layers decreases from 2 layers to 1 layer. During this rounding, the moths are also very hot (the first wing 6 is reduced to a sluice), and therefore, the whole group of moths is able to efficiently gather 1 # of wings with little effort.

1st crisis, #111 blade 6 flat surface! s
Since the two blades 14 are in close contact with each other, there is little light leakage.

Note that the blade of Example 1 shown in Figure 1 has 70 holes at one end and 4. In contrast, the single-wing aircraft 6 of this 14th embodiment is supported by the aircraft pin 1 near its center. Although they are different in that they are supported by @1, both 01lII and 6ml are practical as shutters, and the effect of this JAIjI is the same.

19. The lever of this example is also the same as the 1st wing machine.
It is composed of 111KsJIIIc. And-
Although the part supported by pin 12 and pin 2 and its ii side are made up of 8 layers or Gll, the part supported by pin 1 is only one layer), and the middle part is made of 8 layers. This is the axis 121
1j) By feeding 1g1 of 1-mu 1, ie coffee pin 2, to 1g1, a force is applied to the shaft 12 of the lever and the pin toofLts. , The Kariso OSS force has a similar structure with a lever that increases the amount of hot water as it approaches the pin 20.

This is done by nine levers that vary the thickness as in this example.
Even if you change the inside of Kawajo VcII7 using , the same @0
Although it is possible to obtain the desired effect, this embodiment is superior, so it will be explained below.

Stripe 8 and aI 4 are plan views of the feather group, but the four blades from rattan 2 blade 14 to #Is blade ILK in FIG. 2 are omitted here. As stated in the explanation of FIG. 112, the levers @, IQ, shafts 12, 18, and pins T, - form parallel links. Therefore, the lever itself and 10
When the axis is rotated 12 and 18 times each, the interval 22 becomes smaller and becomes 90 times larger. For example, in the stripe diagram 3, a case is shown in which the blade is obstructed by 7 parts 721, but at this time, there is enough space 22 between the lever S and the lever 100. However, when we reached Figure 4, the feathered pancreas was 1.
When stored outside the perch, space #122 becomes small.

Lever 1 near the pin 22 of this rounded lever 9
It would be difficult to enlarge the width of the 0KM contacting part 11m with the inner thickness. When the width is expanded to nothing, lever 1
0 is pin 'io (
glbo protruding St - Since it is inevitable to run away, lever 1
Due to 0 becoming a member, the space t becomes annihilated.
ii.

Also, from the 4th feather 11 in j12kAK
1 mainly has 43 blades centered around shaft 13 and pin 2QIC
Since it can be rotated, the positional relationship between shaft 1 and pin 211 can be set freely, and the amount of force required to move pin 2 upwards in the diagram is limited. It is not easy to increase the size of the part.

In this way, the width of the lever ■ can be adjusted freely near the joint with the pin 20. The latter has an advantage in terms of shading and freedom of composition.

In JI [i4-], the lever 10 may also have a variable cross-section structure ranging from three layers to tjelK, similar to the lever-, but the role of the lever 1 is 41 blades and 60 pieces.
Since the aim is to keep the rhododendron b almost parallel to the longitudinal direction of each perch, only pulling force or pressure is applied, so there are no particular young fruits.

This example, which will be explained with reference to FIG.
Figure A) is a perspective view, and Figure (2) is its cross-sectional view.

ζ In this case, only the first blade 23 and the lever 240 are at f! 1
This is different from Figure 12. However, the lever 24 may have the same structure as the lever opening shown in FIG. 2. Other axis 1! , 13
, Pin T, @.

1 @, 20 and C[S[root 14 are all located in the same part as in the 'ts2 diagram and have the same function ti. Also, other configurations 4I! The element is also the same as Figure 112, so it has been omitted.

In this ζ, @1 blade 13 is different from that in FIG.
3m is not facing the second blade 14 and is not facing the lever 24.
．． It is facing 10. Jin's round'i! There is a -2s interval between the &1 blade 23 and the 2nd blade 14, which reduces light leakage.
When the perch 21 is layered under such conditions as the perch 21, this is not a particular disadvantage, but rather has an advantage as shown in the following Figure 46.

In Fujinari, 2 is located at the center of rotation of the lever 210, and a bottle 2 is installed at its tip. Haisogi 9 is bishi 2
- It is supported by the lever 21 so that it can be rotated in one direction. Shaft 2, lever 0A and pin 28 are one more foot 1
A pair of wings are supporting each other. Here, pin 2 is different from the gi diagram in that it is located at the nuchal part instead of near the 210 midship.

Here, if the blade 29 goes to the tip (therefore, the thickness of the layer does not decrease, that is, 2$ shown by the circle in the figure)
If the shape also includes a, the center of gravity sOa of the head is feather 8210
The center of gravity is at a position different from 80. From the pin 211 to the center of gravity sQ in the longitudinal direction O order MX- is the center of gravity number (lal 處@X, YOJI troublesome. Therefore, the blade 2- has a 1-0 degree shielding and due to the inertia of 9 o'clock Also, the moment generated by the blade 211 is small, and the weight of the blade 211 is small.
Coupled with its light weight, the amount of effort required for pin 2@ is small.)
, durability is improved. 19 The deformation of the blade itself is small, and the twisting of the blade eliminates unnecessary friction on the threshold with other parts.
The pu that caused the m doesn't catch on. This is 74
Not only 6vlA but also the embodiments shown in Fig. 2 and Fig. 2 have a common effect. /Furthermore, in the case of 5A in FIGS. 5 and 6, the distance between the lever 2T and the center of gravity sO in the thickness direction -Y is the distance m between the center of gravity Boa
Y Round smaller than m, use lever 2T to turn blade 2
When the blade s is driven rapidly, the twist caused by the inertia of the blade 21B is reduced, contributing to smooth movement of the blade 2s.

Embodiment 4 The following figure 3117 (perspective view) shows another embodiment of the present invention, in which the widths of the shochu box layer 31, intermediate layer 32, and Am7m3a are slightly different from the example shown in FIG. 1. Each species is different in length, length, and shape.

In the case of stripe 1-, the width of the -face layer 1, the intermediate layer 2, and the back layer sO in the longitudinal direction are all the same, but in this example, the width is the same. YiI monomerized into
: It's a deliberate thing, but it's a self-made thing. Hole $4, 3i is 1ii
lld (same as D hole 4゜i, this hole is used to connect the oboro parts. In the blade assembly of this embodiment, for example, when applied to a shutter, there is a You can sit on the same plane as the others.

夷m Example S This example is the same as Embodiment 3 shown in Fig.
A perspective view of the striped S diagram is shown above. All works are the previous example and F
Qjtaeh is happy 2nd: #1l SFcD work is l
ID works! The difference is that, like the kOa machine 81$1,4, the shaft 41 is configured to rotate by means of a rotation pin 4211C, and in the 0koa machine 81, the striped lOS machine 81.
87, 11, 88, and 40 are all constituted by vanes in which the number of laminated layers decreases toward the tip of the present invention.

This embodiment is particularly characterized by the way the blades are overlapped. That is, among the layers constituting one blade, the layer with the largest area and the layer with the largest area of the other blade are stacked so that they are in contact with each other, and then the following steps are performed: The contact with another blade is the superposition of layers of wax area.

As described above, if the present invention is applied to all the blades, the shutter operating part 0** will be further reduced, the blades will be able to move at a higher speed, and the durability will be improved.

Furthermore, if the blades are alternately turned inside out and laid together as described above, there will be no mutual contact during movement, resulting in smooth operation.

The above embodiments are based on the known vertical running 9 focal plane shutter constructed by stacking several thin plates tIl.
Although it was rare in the application of llt, the *n+- waving lens layer of the known lens, which uses thin plates stacked on top of each other, is also good. 1 can also be applied to a dipping light-shielding plate to obtain 1, Oka * C) @ pot.

Embodiment ・ Figure 9 shows the evaluation of the three overlapping shutter blades of this example.
4 is g-ret>ox-r cross section.

The light shielding blade used in this example is connected to the drive I# member at the position 4.
s)) The present invention also includes the embroidery style in which the layering gradually decreases in parts as it reaches the final stage.

In this example, all 111 planes move parallel to each other to obtain the image shape lIA of the superimposed foreshadowing and the developed part, and the light enters from the direction of the arrow 9vA (2). However, there is little light leakage.

As described above, according to the present invention, the intermediate layer with a small specific gravity is held between the front and back layers with a high relative elastic modulus, and the length 1 of each layer can be varied, and the connection with the driving member is improved. Since the overlapping layer WjLt decreases as it moves away from the position, the amount of actuation force is small and it has excellent durability. is obtained.

[Brief explanation of the drawing]

FIG. 1A is a plan view of a light-shielding blade according to Embodiment 1 of the present invention, and FIG. 1A is a cross-sectional view thereof. FIG. 2 is a perspective view showing one embodiment of the present invention applied to a shutter with nine vertical blades. Figure 1m3 and Figure 4 are partially exposed views of Figure 2. Figure aS) is a perspective view showing another embodiment in which the blade of the present invention is applied to a shutter, and Figure h is a cross-sectional view thereof. There is a sectional view 7 further abbreviated in Figure 6C (Iss diagram). Stripe 7 is a perspective view of a light-shielding blade top water shutter according to yet another embodiment of the present invention. Figure A is a perspective view of an example in which the present invention is applied to a blade top shutter. Stripe 9 〉 is #am of the shutter blade group of the example.
o, ah are X-Y arrow cross-section E1 diagrams of the figures. [A of the sign of the main tS] 1...Fog layer 2...Middle layer 3...Back layer Spear 1 Figure 2nd prisoner

Claims (1)

[Claims] It consists of at least three layers: an intermediate layer with a low apparent specific gravity, an inner layer with a high elasticity, and an inner layer with a high elasticity. The light-shielding 4i machine for the optical S1 control device threatens that the layer movement will decrease from either the front layer or the bottom layer toward the inner layer as the temperature increases.