File search apparatus

A file search apparatus which is provided with a base having a center pillar, a reel which comprises file accommodating rooms accommodating therein a plurality of files having codes and juxtaposed in a circle and is supported to the center pillar rotatably therearound, a selection device which is supported revolvably to the base to revolve along the outer periphery of the reel so as to read the codes on the files and search for a desired file, a driving device for driving the selection device, and a search display means displaying the searched file, so that the reel rotates to move the searched file to a predetermined position to be taken out therethrough without the trouble of looking for the searched file around the reel.

FIELD OF THE INVENTION 
This invention relates to a file search apparatus, and more particularly to 
a file search apparatus which accommodates a large number of files within 
a reel large enough to juxtapose them in a circle so that a selection 
device searches a desired one of the files automatically from the reel. 
BACKGROUND OF THE INVENTION 
Conventionally, this kind of file search apparatus has been well-known, 
which supports a reel to a base rotatably around a vertical shaft and a 
selection device not-rotatably to the same, the reel being driven by a 
driving device so that the selection device searches a desired one of 
files accommodated in the reel. 
Such apparatus, however, cannot determine the position where the searched 
file is taken out, so that a worker must look for the searched file around 
the reel, which is very troublesome for him and requires an extra space 
around the reel. 
SUMMARY OF THE INVENTION 
This invention has been designed in order to solve the above problem. An 
object of the invention is to provide a file search apparatus which is 
capable of readily taking out the searched file from the reel always at a 
fixed position and need not provide the extra space for looking for the 
file. 
In detail, this invention is characterized in that the file search 
apparatus is provided with a base having a center pillar, a large number 
of files having codes, and a reel having rooms enough to accommodate 
therein the files juxtaposed in a circular arrangement and being rotatable 
around the center pillar, a selection device which circles along the outer 
periphery of the reel and reads the codes at each file to search a desired 
file, a driving device for driving the selection device, and a search 
display means which displays the desired file searched by the selection 
device. 
The file search apparatus of the invention constructed as foregoing enables 
a worker to make certain of searching a file at a fixed position readily 
by virtue of rotation of the reel, whereby he need not walk around the 
reel and no extra space is required for looking for the searched file. 
Also, it is preferable to provide at each file a search display means, 
such as a search lever, which is swingably movable into or out with 
respect to the back of each file. Hence, the searched file can be taken 
out always reliably and simply by the lever and free from a contact 
resistance, even a large one, existing between the adjacent files. 
Further objects and advantages of the present invention will be apparent 
from the following description, reference being had to the accompanying 
drawings wherein preferred embodiments of the invention are clearly shown.

DETAILED DESCRIPTION OF THE INVENTION 
The file search apparatus of the invention basically comprises a base 1 
having a tubular center pillar 11, a large number of files 2 each having 
codes 2a, a reel 3 having rooms 35 for accommodating therein the files 2 
juxtaposed in a circle and being freely rotatable around the center pillar 
11, a selection device 4 which is supported rotatably to the base 1 and 
circles around the reel 3 to read the codes 2a at each file 2 accommodated 
in the reel 3 and search a desired file 2, a driving device 5 for driving 
the selection device 4, and a search display means which displays the file 
2 searched by the selection device 4. 
The base 1, as shown in FIGS. 1 and 2, provides a support member 9 
comprising a first member 91 extending horizontally and supported 
revolvably to the center pillar 11 and a second member 92 extending 
vertically and connecting with the first member 91, the first member 91 
carrying the driving device 5, the second member 92 carrying the selection 
device 4. 
In greater detail, the base 1 comprises a pair of round base plates 12 and 
13 opposite to each other at a fixed interval and connected with each 
other at the centers by the tubular center pillar 11, around which the 
reel 3 is supported rotatably through a pair of thrust bearings S.sub.1 
and S.sub.2. The center pillar 11 projects at its upper end upwardly from 
the upper base plate 13 and fixes at the projection a stationary gear 52 
engageable with a drive gear 51 at the driving device 5. The stationary 
gear 52 carries therein a bearing 10 to revolvably support the root of 
first member 91, and the second member 92 is connected vertically 
downwardly to a free end of first member 91 and opposite to the outer 
periphery of reel 3 so that the driving device 5 mounted on the first 
member 91 drives the selection device 4 mounted on the second member 92 to 
revolve along the outer periphery of reel 3. 
At the circumferentially edges of base plates 12 and 13 at the base 1 are 
provided ring-shaped holders 6 which project opposite to each other, 
thereby preventing the files 2 from carelessly escaping from the reel 3. 
Incidentally, the holders 6 in this embodiment each have a cutout 61 for 
insertion or taking out of each file 2. Alternatively, one holder 61 may 
be provided at the base plate 12 or 13. 
The reel 3 comprises a round upper plate 32, a round lower plate 31, and a 
cylinder 33 connecting the upper and lower plates 32 and 31 at a fixed 
interval, and is divided into a plurality of file accommodating rooms 35 
by use of a plurality of partitions 34 each of an about U-like shape in 
section as shown in FIG. 2. The upper plate 32 and lower plate 31 are 
provided at the outer peripheral portions with positioning plates 37 
having a number of grooves 36 juxtaposed circumferentially of each plate 
37 at regular intervals to thereby position each file 2. Alternatively, a 
plurality of reels 3 may be layered and have the selection devices 4 
respectively or a vertically movable one in common. 
The files 2 each mainly have the back provided with the codes 2a and a 
search lever 2b as the searching display means. The selection device 4 
comprises a reader 41 for reading the codes 2a on the files 2 and an 
actuator 42 for electrically actuating the lever 2b. 
In detail, the files 2, as shown in FIGS. 3 and 4, each comprise a file 
body 21 accommodating therein a plurality of sheets of paper and a 
side-edge member 22 fixed on one side of file body 21, the side-edge 
member 22 being formed of, for example, a flat strip of synthetic resin 
and having the back coming out rearwardly from the file body 21 so that 
the back bears the codes 2a and the side-edge member 22 provides the file 
search display means of search lever 2b movable into or out of the back. 
The search lever 2b comprises a root l having a pin bore, a searching 
portion or search nose m at one side of the root l, and a display portion 
of display tongue n, the root l being pivoted to the side-edge member 22 
at the lengthwise center thereof through a pin p, the search nose m being 
positioned below the root l, the display tongue n being positioned above 
the same, so that the display tongue n, when the search nose m is given no 
input, i.e., during no file searching operation, is gravitated to be kept 
in the retreat position a inside the back of side-edge member 22 with 
respect to the vertical line x passing through the axis of swinging motion 
of lever 2b, thereby preventing the lever 2b from moving out of the back 
carelessly by the centrifugal force from the rotation of reel 3. On the 
other hand, when the file search is performed by the selection device 4, 
an input therefrom is given into the search nose m to swing the search 
lever 2b, thereby forcibly moving the display tongue n out of the back of 
side-edge member 22 to keep the lever 2b in the display position b. 
The codes 2a are formed in such a manner that, for example, at the back of 
side-edge member 22 are disposed a large number of slits 23 lengthwise of 
the back at regular intervals so that a large number of thin code-pieces 
24 are formed, the code-pieces 24 each being bent to either side widthwise 
of the side-edge member 22 so as to be easily cut off. In addition, the 
back of side-edge member 22 reflects the light from portions forming the 
codes 2a. 
The side-edge member 22 as shown in FIG. 4, is provided at the inside edge 
with a plurality of hooked portions 25 disposed lengthwise thereof at the 
predetermined intervals and at both vertical ends with positioning noses 
26 and 27 to be fitted into the positioning grooves 36 provided at the 
positioning plate 37 to thereby keep the accommodated files 2 in position 
respectively. 
Each file body 21, as shown in FIGS. 3 and 4, is formed of, for example, a 
rectangular cardboard bent in M-like-shape and comprises a front cover 
21a, a back cover 21b and a spine 21c of about V-like shape in section and 
for connecting the front and back covers 21a and 21b. The side-edge member 
22 is inserted into a recess outside the spine 21c and engages at the 
hooked portions 25 with retainers c mounted on the spine 21c, thereby 
being attached detachably to each file 22. Each file body 21 has a cutout 
21d at the portion opposite to the search lever 2b and avoids direct 
contact of the swinging lever 2b with the file body 21, and has at the 
spine 21c a binder (not shown) to bind a plurality of sheets. 
Alternatively, the file body 21 may be formed in a sack open at one side 
and carry the side-edge member 22. Also, the side-edge member 22 may be 
fixed to the file body 21 by a fixing means, such as adhesion. 
Next, the selection device 4, shown in FIGS. 1 and 5, comprises the reader 
41, the actuator 42, and a micro-computer 43 having a memory 43a and a 
comparator 43b, so that a selection signal from a keyboard 44 is given to 
the memory 43a and a memory signal outout therefrom is given to the 
comparator 43b. On the other hand, a read signal from the reader 41 is 
given to the comparator 43b through an amplifier, so that the comparator 
43b compares the given memory signal and read signal, and then outputs a 
comparison signal when the memory signal coincides with the read signal. 
The actuator 42 is given the comparison signal and actuated to operate the 
search lever 2b. The reader 41 uses a reflex photosensor comprising a 
plurality of luminescent elements emitting photoelectrons toward the codes 
2a and a plurality of light-sensitive elements receiving the reflected 
light from the luminescent elements, the actuator 42 employing a solenoid. 
The reader 41, actuator 42, microcomputer 43, keyboard 44 and driving 
device 5, connect with each other and to a power source by use of a 
conductor, the keyboard 44 connecting with a display unit 45 by which the 
selection signal from the keyboard 44 is converted into a digital signal 
and displayed. 
Now, referring to FIGS. 1, 6 and 7, a control device 8 for controlling the 
driving device 5 of its normal or reverse rotation is provided between the 
base 1 and the support member 9, comprises a pair of photosensors 81 and 
82 for emitting photoelectrons and a shade 83 of a given length for 
intercepting the photoelectrons emitted from the photoelectrons 81 and 82, 
the photosensors 81 and 82 being provided at the second member 92 and the 
shade 83 at the upper base plate 13 of the base 1, so that a detection 
signal is output from the photosensor 81 or 82 only when the shade 83 
intercepts the photoelectron emitted from the photosensor 81 or 82, and is 
counted by a counter. The control device 8, which is set to count three 
for one revolution of selection device 4, outputs a control signal at the 
count three and feeds the control signal to the driving device 5 to 
thereby automatically stop it. Then, upon closing a switch for the driving 
device 5, it drives the selection device 4 in the reverse direction. 
Hence, the condutor connecting the driving device 5, selection device 4 
and power source, is prevented from twisting to be cut. 
Also, referring to FIGS. 6 and 7, a pair of safety covers 84 extending 
toward the reel 3 are pivoted to the second member 92 at the support 
member 9, a pair of springs (not shown) for biasing the covers 84 to move 
outwardly are interposed between the covers 84 and the second member 92, 
and a pair of limit switches 85 are provided thereon, so that when the 
worker contacts at his hand with either cover 84 during the operation of 
driving device 5, the cover 84 in contact swings to operate the limit 
switch 85 to thereby automatically stop the driving device 5, thus 
preventing the worker's hand from being caught between the second member 
92 and the reel 3. 
In addition, in FIG. 1, reference numeral 86 designates a X-like shaped leg 
attached to the lower end of center pillar 11, 87 designates a condenser, 
88 designates a guide roller provided at the upper plate 32, 89 designates 
a guide roller at the first member 91, and 30 designates a guide roller at 
the second member 92. 
Next, explanation will be given on operation of the file search apparatus 
of the invention. 
For searching a desired file 2, No. of keyboard 44 corresponding to the 
code 2a for the desired file 2 is selected and the selection signal is 
given to the microcomputer 43 from the keyboard 44. The reader 41 at the 
selection device 4 emits photoelectrons to the codes 2a on each file 2 and 
then the driving device 5 is operated to allow the selection device 4 to 
revolve along the outer periphery of reel 3 through the support member 9, 
at which time the reader 41 reads the codes 2a on each file 2 accommodated 
in the reel 3 and outputs a read signal so that, when the read signal 
coincides with the selection signal, the microcomputer 43 outputs a 
comparison signal to actuate the actuator 42, whereby the search lever 2b 
at the desired file 2 is moved by the actuator 42 to project outwardly, 
thus completing the desired file search. Incidentally, the driving device 
5, after the selection device 4 once revolves around the reel 3, 
automatically stops by virtue of a control signal output from the control 
device 8. 
After the completion of file search and the stop of driving device 5, the 
desired file is taken out through the take-out cutouts 61 at the holders 
6. If the searched file 2 is not positioned corresponding to the cutouts 
61, the reel 3 is rotated by hand and the file 2 reaches the cutouts 61 to 
be taken out therethrough. Therefore, the searched file 2 can be taken out 
easily only by rotating the reel 3 and any extra space for looking for the 
searched file 2 is not necessary. 
Also, the driving device 5 which is extremely small-sized is usable to 
drive the selection device 4 for the file search, resulting in that the 
apparatus of the invention has a lower initial cost and running cost and 
also is lightweight as a whole. 
Furthermore, the searched file 2 is displayed only by swinging motion of 
search lever 2b, which is quite free from a contact resistance between the 
files 2, thereby always ensuring the complete file search. 
Alternatively, instead of the holders 6, a file holder 38 at the reel 3 and 
an engaging portion 39 at each file 2 may be provided as shown in FIGS. 8 
through 10. In detail, a file positioning plate 37a is provided at the 
outer-peripheral portion of lower plate 31 at the reel 3, a number of file 
positioning grooves 36a are formed at the radially outward end of the 
plate 37a circumferentially thereof at regular intervals, a ring-shaped 
file holder 38 having an upwardly stepped portion 38a provided radially 
inwardly of the grooves 36a, and the engaging portion 39 downwardly 
extending is provided at the lower end of each side-edge member 22 
inwardly of the positioning nose 27, whereby the engaging portion 39 
engages with the stepped portion 38a to restrict the file 2 from moving 
outwardly, and rides over the stepped portion 38a when taking out each 
file 2. Alternatively, the engaging portion 39, not shown, may be grooved 
at the lower edge of each file 2 and the file holder 38 may be formed in 
an upward projection engageable with the same. 
Thus, the file 2 can be inserted in or taken out of the reel 3 in any 
position. 
Alternatively, the selection device 4, as shown in FIGS. 8 through 10, may 
be provided with an association member 7 operating after a desired file is 
searched, and the reel 3 may be provided at the outer periphery with a 
plurality of engaging members 70 engageable with the association member 7, 
so that the reel 3, after the desired file is searched, rotates in 
association with the selection device 4 to automativally bring the 
searched file 2 to the termination of revolution of selection device 4. 
In detail, the respective partitions 34 of about U-like shape in section at 
the reel 3 are connected at the outer ends through a plate 34a carrying 
the engaging member 70. The association member 7 at the selection device 
4, as shown in FIGS. 9 and 11 through 13, has an actuator 72 which 
advances or retreats radially of the reel 3 through a pair of guides 71, 
the actuator 72 being biased to retreat by a spring 73 and pivotally 
supporting, at the end opposite to the engaging member 70, a pair of pawls 
74 whose tips are opposite to each other at the largest interval slightly 
larger than a lateral width of engaging member 70 and which are swingable 
to reduce the interval and biased to move away from each other by a pair 
of springs 75. A mountain-shaped arm 76 is pivoted at the intermediate 
portion to a stem connecting the upper portions of guide 71, at the lower 
end to the rear of the actuator 72, and at the upper end to one end of a 
vertically operative rod at a solenoid 77, so that the operative rod 
advances or retreats by the solenoid 77 to move the actuator 72 through 
the arm 76 away from or toward the engaging member 70 by virtue of or 
against the spring 73. Then, the selection device 4 keeping the advanced 
actuator 72 revolves in the direction of the arrow in FIG. 13 so that the 
pawl 74 in front hits the engaging member 70 and falls down. Therefore, 
the engaging member 70 enters between the pawls 74 as shown in the two-dot 
chain line and then is pushed by the rear pawl 74, thus allowing the reel 
3 to rotate. 
In addition, the solenoid 77, not shown in detail, supplies to its yoke 
magnetic flux superposed by an electromagnetic coil and a permament magnet 
so that the electromagnetic coil is deenergized during the operation for 
file search, thereby advancing the operation rod at the solenoid 77 by the 
spring 73 as shown in FIGS. 11 and 12. After the lapse of a fixed time 
period since the actuator 42 at the selection device 4 is energized to 
actuate the search lever 2b, one positive pulse is given into the 
electromagnetic coil from the operative electric circuit at the selection 
device 4 so as to attract the operative rod and hold it by the permanent 
magnet, and one negative pulse is given to the electromagnetic coil from 
the above electric circuit to advance the operative rod and hold it by the 
spring 73. 
The reason for attracting the operative rod at the solenoid 77 after the 
lapse of the predetermined time period is that even when the desired file 
2 is positioned in proximity to and before or behind one engaging member 
70 in the rotating direction of reel 3, the second member 92 having the 
selection device 4 passes the proximate engaging member 70 without 
engaging with the engaging member 70 through the actuator 72 to thereby 
avoid covering the searched file 2 by the second member 92. Hence, the 
actuator 72 engages with the next engaging member 70, thus reliably taking 
out the desired file. 
Accordingly, the desired file 2, after searched by the selection device 4, 
moves automatically to reach the position accessible by the worker, 
thereby readily and reliably taking out the desired file 2 without manual 
operation to rotate the reel 3. 
As seen from the above, the file search apparatus of the invention, in any 
embodiment, can simply take out a desired file always at the fixed 
position without looking for it and also requires no extra space for file 
search around the reel to thereby save an installation space for the 
apparatus even when accommodating a large number of files. 
Although the invention has been described with reference to several 
different embodiments, these embodiments are merely exemplary and not 
limiting of the invention which is defined solely by the appended claims.