JPS58714A - Mechanical displacement detecting device - Google Patents

Abstract

PURPOSE:To reduce an extent of abrasion of an electric conductor pattern so that it can be used extending over a long period of time, by providing a pattern independently separated from the electric conductor, in front of the electric conductor on an insulating substrate. CONSTITUTION:A comb-line electric conductor pattern 102 is provided on an insulating substrate 105 by means of vapor-deposition, etc., and on a sliding start position, an independent pattern 103 is provided. When this pattern 103 is slided, a sliding start position signal can be obtained, and also it has a function for reducing abrasion in the first pattern of the comb-line electric conductor pattern 102.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for detecting the amount of mechanical displacement of a member.

Conventionally, a comb-like conductor pattern is provided on an insulating substrate, and a brush linked to a moving member is slid on the wrinkle pattern, and the mechanical displacement of the comb-like member is converted into an electrical signal. A detection device has been proposed.

However, in such conventional devices, there is a height difference between the insulating substrate on which the butterfly conductor pattern is arranged and the cough pattern.
In particular, there was a drawback that the pattern at the sliding start position was easily worn.

SUMMARY OF THE INVENTION An object of the present invention is to provide a detection device that eliminates the drawbacks of the conventional li&

The present invention will be explained in detail with reference to the drawings below. I will clarify.

m1m1 is the aperture control II of the exposure amount control device according to the present invention
This is a configuration diagram showing one embodiment of the O mechanism. The figure shows a state in which film winding and shutter charging are completed.

301 FilJ) In the ring, Ko II! b ring 30
1 is engraved with an automatic multi-EE index and a manual index, and an actual image-mol m and a force A9801 are also provided. Reference numeral 302 is a rounding index that matches the automatic aperture) ME index and the manual aperture) index. 303 is an aperture preset F ring, and this aperture preset ring 303 is a spring 303.
a) It has a central detail 303b which is biased in the hour hand direction K11llkllll and can engage with the real picture 113G1m of the dial 301. Also, Tsuyoshi [Tsugi set ring 3]
03 has an arm Beat and is further tightened) Preset ring SO3 is Haki Il! From Saree Lever 308dK■
Indicates 1-aperture) setting force via bell crank 0l
This bell crank is used to control the rotation of the plow (not shown) and determines the degree of tightening. The end of the pin 304 is urged to rotate in the counterclockwise direction by the rice 305 & is engaged with the round movable diaphragm sillper 305. This automatic multiple lever 305 is a rising part 305.
e and a falling part 305d, and this falling part 3
05bK is an automatic diaphragm lever 305 that is engaged with a movable contact piece of a hold switch SH. An intermediate lever 307 is pivotally mounted on the same shaft 306. 308 is OI (not shown)!
A hoisting cam 309 is fixed to the hoisting shaft go goms of the hoisting lever. 310 is a movable intermediate lever, and a pin 310m provided at one end of this intermediate lever 310 is engaged with the upper blade arm 309. Further, the other end 11 of the intermediate lever 31G is provided with a bottle 310b.
is provided, and the bin 310b is connected to the intermediate lever 30.
When engaged with one end of 7, the mirror drive lever 31 is connected to 1#.
1 is engaged with one end 311 m of the same. Front intermediate lever 3
The first Kintei lever 313 is charged by the nine bins 310- provided on 1G. This intermediate lever 307
The other end can be engaged with a pin aiza provided at one end of a rotatable charge lever 312. This charge lever 312 is a spring 31! d rotationally biased in the counterclockwise direction. An electromagnet with a permanent magnet for tensioning Mg1tiJ11 is engaged with one end 313a of the first tensioning lever 313, and the other end 313b is connected to one end 314a of the release lever 314.
and the spring 31JIe. Also, as the bottle 310g installed on the intermediate lever rotates, one end force surface 31 of the first Kintei lever 3'13 is rotated.
Engage with 3d. A bottle 314b is installed in one part 31 of the release lever 314.
b'K is one side 311c of the erected drive lever 311;
a mirror drive engagement lever 3150 having an end that engages with the mirror drive engagement lever 3150;
Lun end 315m is locked. The end portions a14d and 314e of the release lever 314 have an EE capable of one movement.
One end of the locking lever 316 is locked, and the pin 312b implanted in the charge lever 311 is locked.

Further, a bottle 314c is provided at the other end of the release lever 314.
is planted, and the movable contact piece of the storage holding switch 8M is locked. Also, the movable contact piece of this switch SM is EE
It is directly locked by the lock button 317. The release lever 314 is biased by a spring 314f to rotate in the counterclockwise direction. The sector gear 31g is latched to the other end of the locking lever 316.

This sector gear 318 includes gears 319m and 319b forming a speed regulating mechanism 319 and a stop wheel 319c.
are meshing. Finally, the sector gear 318 is attached with a slider R□ of a round pulse generating switching means R1 that determines the preset 9 value of aperture. This sector gear 3180 shaft 318aK is equipped with a gear 320, and an EE charge gear 321 meshes with this gear 320. A lever 327 is coaxially fixed to this gear 321, and this lever 327 is in contact with the other step 312eK% of the charge lever 312. A bin 318b is installed in the sector gear 318, and the bin 318b
The end face of the signal lever 32 is pivotally connected to the support lever 328.
It is fixed at 9.

The folded end of this signal lever 329 locks the arm 303c of the aperture pulley nut ring 303.

The EE sector gear 318 is strongly biased clockwise by the spring 3031 against a spring 318c on the semi-sector gear 318 that is biased counterclockwise.

Ml is a magnet with a permanent magnet for controlling the diaphragm, and this magnet Mp is attached to the adsorption lever 330 and is attached to the nine iron pieces 331.
It is K so that it can absorb. This suction lever 330
is simultaneously biased counterclockwise by the lever 331aK, and the bent end of the lever 33G is connected to the speed governor mechanism 3.
It is possible to engage with the stop main ear 319e of No. 19. Further, the other end of the suction lever 330 is in contact with one end 312f of the branched charge lever 3120. The bottle that is in contact with the manual switch 8pO movable contact piece (3B is installed on the lens side, and this bottle/33
The end face of No. 2 is in contact with the aforementioned drawing sill 3010 force section 301bK. The mirror drive lever 311 has a slow sharpening device (not shown), and the mirror drive lever 311 is urged to rotate counterclockwise by a spring 311d, and one end of the mirror drive lever 311 is attached to the mirror drive engagement lever 315. It is attached to the other side. The leading curtain tensioning lever 333 is a spring 333a.
As it is rotated counterclockwise, its tip engages with the planting pin 334aK of the front curtain gear 334, and the other end can be attracted to the shutter control permanent magnet (M). There is.

This first number gear 334 meshes with a front curtain pinion 335 of a first number dot (not shown). Further, a mirror tensioning lever 336 is engaged with the kinty portion 311b of the mirror drive lever 311. This tension lever-386ij? KJII spans nine springs 336 between two drive levers 3110
A push-up lever 337 that is rotationally biased in the counterclockwise direction from aK and has one end coaxially supported by the mirror drive lever 311.
is engaged in.

One end of the push-up lever 337 @ 337 m is configured to be rotated clockwise by the mirror-up operation to enable single-aK-2-up-fi. The other end of this push-up lever 337 is turned on-338. A flip-up pin 338a is provided. This mirror 338 is rotatable around a shaft 3311b. 338
C is a mirror return spring. Reference numeral 339 is a nine-tall curtain gear provided coaxially and separately from the preceding gear 334, and this trailing curtain gear 339 meshes with a trailing curtain pinion 500 for a trailing curtain drum (not shown). Further, a bin 3391 is installed on the trailing gear 339. 34G is the bin 331
This suction lever is rotated from 1aK.
340 is designed so that magnets M, K with permanent magnets for shutter control are attracted by the iron piece 340m. This suction lever 340 is always operated by a spring 340bK so that the rotation is held by a magnet. Reference numeral 341 denotes a trailing curtain signal lever that is rotated by the pin 3391, and this lever 1 341 is always rotatably held at the locking pin 341b△ position by a spring 341&. The mirror tension lever 3
The end $336b of 36 and the trailing curtain signal lever 341 are locked. Then, the transmitted light of the photographic lens (not shown) is -338. Focus 11342, condenser lens 34
3. Eyepiece 3 via IiK through pentaprism 344
45, it is visually recognized by the photographer. 346 is a light receiving element such as a silicon blue cell. 347 is a shutter button having a Lullies switch Sm inside. 501 is a button for displaying the exposure amount. By pressing the iron button, the L-shaped lever 352 is simultaneously moved clockwise, and the display switch SP', hold switch SW1, lamp switches SL and SL' (Fig. 82) are turned on. FIG. 2 is a block diagram showing one embodiment of the exposure amount control device according to the present invention. ■ is @1 Silicon 7O) -
This is a photometry section that measures and logarithmically compresses the subject light, which is composed of a light receiving element 346 such as a mirror, an operational amplifier 2', and a log diode 3'. 4' is an A-D converter which converts the IO output of the dimming section into a digital value. 5' is a register that stores the output of the photometer I.

6' is an adder that adds the subject brightness value BY value in the register 5' and the logarithmically compressed and digitized film sensitivity value Sv. 07' is a subtracter that connects the output terminal of the adder 6' to one input terminal. The other input terminal receives the logarithmically compressed and digitized shutter mode value via the switch S in the case of shutter priority, and the TV value which is digitized via the switch for shutter control in the case of aperture p priority. The data are logarithmically compressed and digitized, and the y value and y value are input. Reference numeral 12' is a register in which the AV value calculated by the subtracter 7' is stored when shutter priority is given, and the 〒Y value is stored when aperture priority is given. 10' is an aperture multi-stage pulse generation path which generates pulses in conjunction with the camera lens O aperture. O1l', which is a so-called manual switch and is turned on in the case of shutter priority, is a register, and this register stores the pulses generated from the pulse generating circuit via the switch SP. 9' is a comparator circuit which generates an output when the aperture value stored in the register 12' matches the pulse signal of the register 11' and operates the aperture control magnets M, , through the switch SD. .

Reference numeral 8' denotes a delay circuit, which drives the front curtain magnet Mg when the lens 2- has finished rising after the shutter release. 1
Reference numeral 4' denotes a time setting circuit, which drives the trailing curtain magnet Mg after 9 shutter seconds set by the specific circuit 14'Fi and after 9 shutter seconds calculated by the specific circuit 14'Fi. 13' is a register, A
is a shutter dial, LF'i lamp, and SD is a magnetic switch that is switched in conjunction with the manual switch SP. ST is the shutter control switch,
The switch transmits the pulse signal to the register 13'. ST' is a switch that switches in conjunction with the switch STK. SF5 is a display switch that operates in conjunction with two-amp switches SL and SL'. SW is a manual control switch, which transmits the shutter speed value to the timer during initialization. Figure 3 shows an example of the 2nd EOI7R) stage pulse generation circuit; R1 is the pulse generation switching means shown in Figure 1;
11 to n' are contacts of the wrinkle switching means. R,,
is a slider shown in the first figure, which slides in the direction of arrow Y in conjunction with a large number of sliders, and generates a pulse when it comes into contact with contacts ll to 11'. Tr is a transistor whose contact point is in contact with the slider, turns on during running, and generates an output. C is a condenser, and R' is a resistor to form a differentiator circuit, which differentiates the output of the transistor TO and generates a pulse.

E is a power source 0 FIG. 4 shows an example of a digital control device according to the present invention, namely the pulse generation layer switching device 1i! disclosed in FIG. 1! R
, there is a third picture of a comb-tooth conductor pattern. In the figure, reference numeral 101 is a drawing of the brush R, 0, which is shown in the distance as it slides on the pattern. This slides left and right on the turn and generates a pulse signal.102
Vi<L Conductor pieces are fixedly disposed on the insulating substrate 105 in a tooth-shaped conductor pattern by a method such as vapor deposition. Reference numeral 103 designates an independent pattern that can be placed at the sliding start position, and by sliding this pattern, a sliding start position signal can be obtained, and the comb-shaped conductor (comb-shaped conductor) serves to reduce wear in the first pattern of the turns 102. In the figure, the black part is the conductor pattern, and the white part is the surface of the insulating substrate.

104 is a common return path pattern provided in parallel to the comb-tooth pattern, and 106 and 107 are terminal lead-out lines of the comb-tooth pattern and the common return path (turns).

In the figure, a indicates the conductor width in the sliding direction of the comb-like pattern, and b indicates the same interval.・~n is a stopping position where the sliding speed of the sliding brush is not considered. C2d indicates the difference between the positions -' to 0' of the comb-tooth pattern arranged in consideration of the sliding speed of the brush and the above-mentioned stop position -n. In addition, the fourth diagram (each of Da' to n' and the common return path pattern 107 are JI3 diagram groups 11 to n1)
form. In FIG. 4, brush 101 (R□)
When the brush slides, due to the difference in height between the comb-tooth pattern 102 and the substrate 105, the comb-tooth pattern e' at the sliding start position of the brush is likely to wear out.

By providing a sliding start position pattern 103 at the 1IIIhWIR starting position of the brush, independent of the comb-tooth pattern, a sliding start position signal is obtained from K, and the comb-tooth pattern is maintained.

Next, when the number of generated pulses reaches a certain value and reaches 9 (this is 4D, lI
(K will be described later), brush 1010IF pigeon house for stopping the plow, 1st wJ and 2nd tlJ indicator magnets) M,
l! My time was delayed, I arrived at the 1st illustration / (-330, Ith
*0 Mechanical delays and the like that engage the ml indicator stop wheel 319 cause a time delay between when the pulse reaches a certain value and when it runs and when the brush actually stops sliding.

In order to compensate for this, in the present invention, the brush stop position, that is, the brush stop position corresponding to each aperture value to be adjusted, is set before the brush stop position a''-n according to the time delay corresponding to the stop position. Tooth patterns ' to n' are provided to adjust the amount of delay. When the sliding speed of the brush 101 changes, the adjustment amounts e and d will differ depending on each stop position. .

In addition, in the case where the sliding motion of the brush is a uniform acceleration motion and a uniform velocity motion as shown in FIG.
Just place it as shown in the figure.

In the figure, Xij is the start position of the brush, E to D are the brush stop positions, and w-rt is the position of a comb-like pattern for generating a brush stop signal corresponding to the stop positions E to T. In other words, the distance between E and B in Fig. 7, F
and F', G and G', H and H', I and I', J and J', K and K, L and L'. The interval between M and V, and the interval between M and V are gradually expanded to the OS shown in FIG. The distance between Q', the distance between P and P', the distance between Q and Q', the distance between R and R',
The spacing between S and S' and the spacing between T and T' are approximately equally spaced. As a result, even if the brush slides as shown in FIG. 6, the brush stop signal is generated at the round point according to the speed of the brush, so that an accurate aperture value can be obtained.

In the case of Fig. 7, the brush performs a uniformly accelerated motion from E' to V, and then crawls at high speed from the slope to T'.

Next, the comb-like pattern 102 is formed using a metal film,
If the thickness of the film is extremely thin, the resistance value will be quite large even if the conductor pattern is made of gold and is round, and depending on the sliding position of the brush with respect to the pattern, the lead terminal of the pattern This means that the resistance value between this and this sliding position changes. On the other hand, in the present invention, the combination path pattern 104 is replaced by a comb-tooth pattern 1020.
Kj) This is to offset the change in resistance value due to the sliding position as described above by providing the lead terminal 107 in the Km row in the direction of knob movement and providing the lead terminal 107 at the end opposite to the lead terminal lO6 of the comb tooth pattern. Furthermore, this common return pattern 104
The film thickness and outer shape of the electrodes are adjusted appropriately so that the resistance value between the two electrodes becomes constant.

Next, the sliding brush 101 (R□) and the comb tooth pattern 1
The contact with 02 is not a point contact, but has a certain contact area, and due to the influence of the height difference between the conductor part of the rounded tooth pattern and the board, the comb @ O @ a and its spacing are equally spaced. If this is done, the resulting pulse signal will have a short off time, resulting in a signal with significantly different on and off widths. In order to correct this and obtain a pulse signal in which the on and off widths are approximately equal, in the present invention, as shown in the figure, KL and electric This provides an easy-to-handle interval pulse in an enclosure.

Figure 5 is an explanatory diagram showing the contact state between the sliding pusher and the comb-tooth pattern.
They make contact as shown in Figure 1 →, and when they are extremely thin, they make contact as shown in the figure (roll). In this case, the on and off times of the book and pattern are not equal as shown in the figure. Fig. 5 (cl) and - are Fig. 5 14. In the case of t@0, the conductor width a of the comb-like pattern is narrowed by the interval, and the above-mentioned on and off times are -
Let's make it approximately equal and show the case of nine.

Next, 11 regarding the operation of the exposure amount control device according to the present invention.
I will clarify.

If you want to prioritize shutter speed, first set the aperture to 19 and 301.
When the E@ mark is aligned with the index 302 as shown in the diagram, the contact relationship between the force A$301b and the bottle 332]! When the manual switch SP turns on, the switch S' closes.
, 8D are turned on, and the aperture) R number pulse generation circuit 10' is connected to the register 11'. Then shutter button 3
When 47 is pressed down, @Lury's switch 8B is turned on, and the electromagnet with permanent magnet for M1 tensioning M1. The third tension lever 313 that is reversely excited and loses its magnetic force is the spring 313e.
In other words, one end 313b of the first tension lever 313 and one end 3 of the release lever 314 move in the direction of the multi-hour hand Kli.
14m is released, and the release lever j (-314) is rotated counterclockwise by the spring 314f.Meanwhile, photometry by the light control unit I is started in synchronization with the shutter release, that is, the subject is incident on the light receiving element 346. Then, the light receiving element 3
The output corresponding to the subject brightness from 46 is the operational amplifier 2'
The analog output is supplied to the input end of the A-D converter 4' via the log diode 3', and the analog output generated by the A-D converter 4' in response to the subject brightness is converted into a pulse number by a known method. converted and digitized register 5'
will be transmitted to. Further, by rotating the release lever 3140, the memory switch SM is turned off via the bin 314e, and the light metering by the light control unit
4bK! <The two-drive counterfeit lever 315 moves at the same time, but the details will be covered later.In addition, when the release lever 314D rotates in the direction of the 1-hour hand, the υ locking lever 316 moves counterclockwise K (b) to move the sector gear. Unlock fake money with 318.

9. Since the signal lever 329 is moved downward via the rotating pin 318b of the sector gear 318, the arm 303C is locked to the signal lever 329, and the preset ring 303 is moved against the spring 318C by the spring 303a. Then, the sector gear 31st rotates clockwise. Therefore, the gear 319m forming an adjusting machine @319.

319b and 319c rotate, and the last stage stop wheel is rotated counterclockwise. Also, sector gear 31
The slider R1I of the pulse generation switching means slides by 80 rotations, and the pulse generation switching means R
For each shrimp that comes into contact with those contacts 11 to n'', turn on 1 and generate a pulse through the differential circuit, and register 11
'Count and store the wrinkle pulses and transmit them to the comparator circuit 9'.

On the other hand, the digital value By value stored in the register 5' and corresponding to the subject brightness is logarithmically compressed and digitized by a known method, and added to the film sensitivity value and the Sv value by an adder 6') and a subtracter 7'. One input terminal K 8Y value and B
The Y value is added and input as a round value, Bv+8v value.

In addition, the other input terminal of the armpit adder is a shutter occurrence value that has been logarithmically compressed and digitized using a known method.
is input through the switch sp's. #Jki~
The +8v value and the TV value are subtracted by the subtractor 7' and stored in the register 12' as the Bv+8v-TV value.

That is, AV=Bv is stored in the register 12' as a photographic operation.
Since the value at which +5v-TV was performed is stored, the aperture value AV value is stored.

After Avlii is stored in the register 12' as described above, the pulse generated by the pulse generation switching means is transferred to the register Il'. is transmitted to the circuit 9', and the scissor register 11' output and said register 12'
The comparison circuit 9' generates an output of 1, reversely excite the magnet Mgt-, and release the iron piece 331. For this reason, the suction lever 330
is rotated counterclockwise by the spring 3311, and its bent portion engages with the stop wheel 31QCK to stop the rotation of the stop wheel 319co. Therefore, sector gear 31
The position of 8 is determined. Therefore, as mentioned above, when the sector gear 3180 stops rotating, the aperture preset ring 30
3 is moved to the appropriate aperture value position K11, thereby determining the position of the bell crank. In other words, the stop position of the aperture reset ring 3030 is based on information from the light receiving element 346 that measures light through the photographic lens, the set shutter speed,
The aperture and value are determined based on the five-sensitivity exposure correction information.

On the other hand, in parallel with the start of HE operation, 11r
Ik aperture) mechanism also starts. That is, when a reverse m magnetic pulse is applied to Ml, the first center lever 313 moves to the spring 313.
eK rotates in the hour hand direction, and the release lever 314 rotates counterclockwise). do. That is, one side 311e of the mirror drive lever 311 and one end 315 of the mirror drive engagement lever 315
b is released, and the mirror drive lever 3!1 is rotated counterclockwise by the spring 3114. At the same time, since the claw portion 311b of the mirror drive lever 311 and the tension lever 336 are in a locked state, the push-up lever 337 that pivotally supports the tension lever 336 rotates counterclockwise. Therefore, the bent portion 337bK of the push-up lever 3370 engages with the rising portion 305C of the automatic aperture lever 305 to rotate the automatic aperture lever 305 clockwise. For this purpose, the hold switch SR is turned on and the pin 304 installed in the aperture drive ring is operated to preset the aperture and tighten the aperture according to the position of the bell crank. Further, by rotating the push-up lever 3370 counterclockwise, the flip-up bin 338a of the mirror 338 is pushed up, and the mixer 338 is flipped up.

Also, when the shutter button is pressed, the delay circuit 8' is activated, and after a certain delay circuit, current flows through the magnet (Mg).
The magnets) M, , are reversely excited.

The delay time by the delay circuit 8' is the time from when the shutter is released and the aperture is stopped until the mirror finishes flipping up. When the magnets) M and , are reversely excited, the front curtain gear 334 is rotated counterclockwise by a spring (not shown), and the front curtain gear 334 is rotated clockwise by the front curtain gear 334. Rotate. This rounding first number gear 334 starts to rotate and runs the first number via the leading curtain pinion 335. Also, when the magnets M, , Kt& flow through the delay circuit 8', the specific circuit 14' is activated.
A signal to start the timed operation is transmitted from the delay circuit 8'.

The shutter time value λ is applied to the time setting circuit 14' via a switch SP', and the time setting operation start signal (instead, the time setting FiAM 14' is activated, and the shutter time value that has been set for a long time is set to λ). When a current is applied to the magnet (M), 4, the magnet (M) is reversely excited. Since the lock on the trailing gear 339 by the rounding and suction lever 340 is released, the trailing gear 339 begins to rotate and causes the trailing curtain to travel via the trailing curtain pinio 1500.

Also, when the trailing curtain ends, the rotation of the trailing curtain gear 339 causes the JI
At the 339 m bin, the trailing curtain signal lever 341 rotates counterclockwise and the mirror tensioning lever 336 rotates clockwise. This rotation of the mirror tension lever 336 releases the engagement with the mirror drive lever 311. This running and pushing up lever 337 is activated by the spring 305 & the automatic aperture lever 30.
5, and the mirror 338 is returned to its original position by a return spring 338c.

At the same time, the automatic aperture lever 305 is rotated in the direction of the hour hand by the spring 305m, turning off the hold switch SH, and the installed bin 304 of the aperture drive ring is returned to its original open state. When the winding shaft 308 performs a winding operation, film winding and shutter charging are performed, and at the same time, the charge lever 312 is charged via the intermediate levers 310 and 307, and the automatic aperture mechanism and mirror mechanism are charged. [by operation], and the tip portion is re-engaged and returns to the shape 11 shown in the figure.

Next, the case of performing it manually will be explained. First, set the desired aperture value of the aperture or ring 301 with your finger 4302
When they match, the bottle 332 selects a symbol to change the shutter speed of the dialer, matches the index, presses a manual button (not shown), and turns on the switch 5Wt. The shutter dial AC) EE symbol is now off the index, so switches 8T and ST' are off. Then, by pressing down the shutter button 347, the first Lurie switch 8R1 is turned on, the first tensioning permanent magnet electromagnet M1 is reverse excited, and the first tensioning lever 313 is rotated in the direction of the seconds hand by the spring 313c. Tightening lever 3130 one end 313b and 9-z lever 3140
One end 314a and ID! II is off and the release lever is off.
3114 is a spring 314fKl that rotates in the direction of the hour hand.

As the release lever 3140 rotates counterclockwise, the locking lever 316 moves in the counterclockwise direction Kn, and the sector gear 318
disengage with. This rounding sector gear 318 is connected to the aperture preset ring 303 by the spring 303aK. Kid clockwise against the spring 318 via the signal lever 329
Therefore, the signal lever 32 is activated via the bin 318b.
9 to a predetermined downward position. For this reason, the signal lever 329
Preset ring 3 (aperture with arm 303c locked)
03 is moved by a spring 303m to the position of the protrusion 301m of the diaphragm ring 301. As a result, the multi-number preset ring 303 is rotated to the position of the set aperture value, and the position of the bell crank is determined. In addition, the change lever 314
When K rotates counterclockwise, the automatic tightening mechanism also starts. In other words, release vA-3140 rotation causes release pin 314bK! ? ) Rotate the roller drive engagement lever 315 in the direction of the hour hand and adjust the shutter and aperture in the same manner as before)
At the same time, the mirror 338 is flipped up, and a certain period of time has passed after the shutter release, as in the case of shutter priority! After the shutter speed inputted to the specific circuit 14' via the switch SW, M1 is activated to end the exposure.

Even after this shutter control, the mirror 338 and the automatic diaphragm lever 305 are restored in the same manner as in the case of shutter priority.

Next, the case of aperture priority will be explained. When the Eg symbol on the shutter speed dial A is aligned with the index, the shutter EE switch 8T and the switch sf interlocked with the switch BTK are turned on.

Next, as in the case of manual operation, adjust the aperture ring 301 to the desired aperture value and turn the master switch SP and gP SD.
is off. When the shutter button 347 is pressed down, the first release switch S is turned on.
is reversely excited and the tension lever 313 and release lever 314 are
is disengaged, the release lever 314 rotates counterclockwise, and the memory switch s is released as in the case of shutter priority.
M turns off and the side light becomes a photon. By rotating the release lever 3140, the engagement between the locking lever 31g and the sector gear 318 is released, and therefore the sector gear 318t'i spring 303m resists the spring 318c via the aperture preset ring 303 and the signal lever 329. Therefore, the signal lever 32 is rotated clockwise through the pin 318b.
The diaphragm preset ring 303 with the arm 3() 3c locked at the diaphragm or the ring 301 is rotated by the spring 303aK to the position of the protrusion 301Jl of the diaphragm or the ring 301, and the sector gear is rotated clockwise to rotate the pulse generating switching means R1. The slider R□ slides and generates the number of pulses corresponding to the aperture value.

In the course of this series of operations, the nine subject brightness values By stored in the register 5' and the logarithmically compressed and digitized film sensitivity values Sv are added by the adder 7 and then the subtracter 7
The output value By+Sv that is added by 1 is inputted to one input terminal of '. Also, in the other inputs of the subtractor 7', the number of nine pulses and the AV value corresponding to the set value are stored and transmitted via the switch ST to the register 13', so that subtraction a! The output of 7' is the value BY''5V-AV which is obtained by subtracting the M7 value from the Bv÷8v value, so the photographic calculation (Tv=Bv-AV)K is the shutter speed value Tvlil. The T7 value is stored in the register 12' and input to the time setting circuit 14' via the switch ST'. The automatic aperture mechanism also starts. That is, by rotating the release lever 3140, the pin 314b rotates the similar mtgb latching lever 315 clockwise to tighten the aperture in the same manner as in the shutter priority mode. Perform flip-up of y-338. From then on, use magnets as in the case of shutter priority)
M, , is reverse excited to run the first number, and the timer circuit 14' calculates the shutter speed. Then, the Mi-J-338 is returned to its original position, and the moving aperture lever 305 is returned to its original position.

Next, a case will be described in which the appropriate exposure amount is displayed in advance in the photographing 11 using the exposure amount control device according to the present invention.

First, the open aperture value of the aperture ring 301o is set to the index 302. Manual switch sp sp by this operation
and turn off the magnet switch SD.

Also, remove the shutter dial from EE, set the desired shutter speed value, and switch BT.

Turn off ST'. Next, press button 5 for displaying the appropriate exposure amount.
Press 01 and rotate the LfJ lever 352 clockwise.
The engagement between the locking lever 316 and the sector gear 31g is released, and the display switch sp' and the hold switch S
``Turn on the lamp switches SL' and SL'.

When the locking lever 31g and the sector gear 318 are released, the reset ring 303 is released by the spring 303aK.
Although it is possible to rotate clockwise, the protrusion 301a of the diaphragm sill 301 prevents the eye movement from rotating. By changing the number of shillings one by one, the grisset ring 303 intermittently rotates in the direction of the hour hand, and the arm 303 rotates intermittently in the direction of the hour hand.
The signal lever 329 engaged with C moves intermittently downward, and intermittently rotates the sector gear 318 clockwise. As the sector gear 318 rotates, the sliding piece R□ slides on the pulse generation switching means R1, and the pulse generation circuit lO' generates a pulse as in the case of shutter speed priority. is generated intermittently, the wrinkle bus is counted by the register 11', and is compared with the aperture signal calculated in the comparator circuit 9' in the same way as in the case of the manual transmission, and the number of pulses and the aperture image signal are calculated. When a match is made, rung L is lit.

As described above, in the present invention, a pattern independent of the conductor pattern is provided in front of the conductor pattern, so that the degree of wear of the conductor pattern is reduced and the conductor pattern can be used for one length.

[Brief explanation of the drawing]

Fig. M1 is a mechanical diagram showing one embodiment of the II element quantity control device according to the present invention, Fig. 2 is a block diagram of the j1 quantity control device according to the present invention, and dark blue Fig. 6 is a block diagram of the j1 quantity control device according to the present invention. A circuit box showing an embodiment of the aperture stage number pulse generating circuit shown in Fig. 2; (Diagram showing the contact between the toothed pattern and the sliding brush, @6 Figure A curve diagram showing an example of the sliding speed of the brush, Figure 7 IIi
FIG. 7 is a diagram showing the spacing of the comb-tooth pattern with respect to the sliding speed shown in FIG. 6; Ra...Switching means for pulse generation, Rax
@*...Sliding piece, 1'~nil,...Contact,
Tr+e...transistor/, C...skewer/denser, R'...resistance K, 101...fist...sliding brush, 102...comb-shaped conductor t( turn, 105
@...Sliding start position pattern, 104e0...Common return pattern, 105...Insulating substrate, 6.7...
...Output terminal. Hiideune Canon Co., Ltd.・Side・'Now

Claims (1)

[Claims] Mechanical displacement amount detection that converts the amount of mechanical displacement of a moving member into an electrical signal by sliding a brush linked to a moving member on a conductor pattern arranged on an insulating substrate. 1. A mechanical displacement detection device, characterized in that a pattern independent from above the conductor pattern is provided on the insulating substrate and in front of the conductor pattern.