JPS60104932A - Film loading device of slide projector - Google Patents

Abstract

PURPOSE:To simplify and compact the structure of the titled device by discharging a film in a magagine case from its maximum layer side to a film loading part, and returning the film in the film loading part from the upper side of the magagine case to its inside. CONSTITUTION:Interlocking with the rotation of a rotary arm 77, a discharge arm 52 is rocked in the arrow (b) direction and moved up to the discharge starting position of a virtual line to the magagine case 33. On the other hand, a returning arm 61 is rocked in the arrow (c) direction, an engaging pawl 64 hangs up the lower end of a film frame 32 in loading and lifts the film frame 32 along a guide course 62 to load the film from the upper opening part of the magagine case 33 into its inside. When the rotary arm 77 is rotated moreover, the discharge arm 52 is rocked in the reverse direction against the arrow (b) and takes out the film frame 32 located on the bottom position of the magagine case 33, the returning arm 61 is oscillated in the reverse direction against the arrow (c) and returned to the lower part of a receiving pawl 30, then the film frame 32 is loaded to a film loading part 27. Thus, continuous projection is attained and the structure of the device is simplified and compacted.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a film loading device for a slide projector.

In a slide projector, there are conventionally two types of film loading devices for loading a film attached to a film frame into a film loading position in the middle of an optical system: a reciprocating sliding type and a rotating type. The reciprocating sliding type.

A large number of films are stored in horizontal rows in a magazine case attached to the projector body, and the films are held elastically while being stacked and moved intermittently in the lateral direction. When the film reaches a predetermined position, the film is taken out and loaded into the film loading position, and the projected film at the film loading position is returned into the magazine case. This has a relatively simple structure and can be made compact if the projection body is flat, but since the projected film is returned between the stacked and elastically held films, the film The drawback is that the return operation is poor and the film frame is easily damaged. It was not possible to repeatedly project images in this order.

In the rotary type, a magazine case is installed in the projector body so that it can rotate freely around the vertical or horizontal axis, each film is stored radially in this magazine case, and the films are loaded one after another while rotating the magazine case intermittently. This is what I did. According to this.

It has the advantage of being able to repeatedly project all films in a predetermined order, but this only applies when all the films for that capacity are loaded into the magazine case.Therefore, when the number of films increases or decreases, endless single shots can be performed. There is a drawback that you will not be able to do so.

In addition, with this rotating type, films are stored radially, so in order to store adjacent films in a nearly parallel state, it is necessary to
The magazine case has become extremely large and cannot be made compact as a whole, which has also caused an increase in manufacturing costs.

In view of these conventional problems, the present invention has a simple structure that allows it to be compactly incorporated into the main body of a projector, and that allows any number of films to be repeatedly projected in a predetermined order from end to end. The main feature of this projector is that it is provided with a removable magazine case in which films can be loaded from above in a stacked manner and the film inside can be taken out from the bottom layer.
A dispensing means for dispensing the lowest film of the magazine case and supplying it to the film loading section in the optical system, a holding member for pressing and holding the dispensed film against the film loading section, and a film loading section. A guide path for guiding the film in the film loading section to the upper side of the magazine case, and a return means for returning the film in the film loading section from above into the magazine case along the path are provided.

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.
2 shows the external appearance of the slide projector according to the present invention, and FIGS. 5 and 5 show the specific structure of each part thereof. As shown in Figures 1 to 5.

(1) is the projector main body with the - side open, and the cover (2) is attached to the open side, and this projector main body (11r
l has a grip part (3) on the upper end and a pair of front and rear legs (4) on the lower end.
(51 respectively. A pair of legs (41 (of 51)
The front legs (4) are screwed into the projector body (1) via screws (0) so that they can be adjusted up and down, and the rear legs (5) extend left and right from the projector body (1). It is attached to the projector main body (1) via screws (7) and disc springs (8) so that the projector main body (1) can be moved between the stored state and the stored state. (9) is the projection lens unit, θq
is a light source unit), and the optical system is 41
Dragon is formed. The projection lens unit (9) is attached to the projector body (
1) The seed coat is attached to the unit mounting part 0υ so that it can slide forward and backward,
and? A adjustment knob (adjustment knob linked to l'2 +t+ (
The position can be adjusted forward and backward via the rack and pinion machine ff&. The light source unit 00 is a light source (14
1, Reflector 09, Condenser lens 00α force (18),
Heat-insulating film (consisting of In), projection lens unit (9
) and is incorporated into the projector body (1) at a distance from the rear. (A) is a propeller placed below the light source unit Ql, which is installed at the rotary 41fb &υ placed in the front and back direction at the bottom of the projector body (1), and is installed on the bottom side of the projector body (1). It is configured to cool the light source unit (QO) by introducing external air from the intake port (a) formed in the light source unit. Further, an exhaust port is provided at the top of the projector body (1) to discharge hot air after cooling the light source unit GO. The rotating shaft Qυ is connected to a motor tQ built into the rear part of the projector body (1), and is rotatably supported by a mounting plate (c) in the middle, and the front end of this rotating shaft 21) is attached to the projector. The front wall of the main body (1) is straight, and a manual operation knob (A) is attached to the tip. (Foundation) is a film loading section, which has a loading wall track formed integrally with the projector body (11) to be located between the projection lens unit (9) of the optical system and the light source unit (Q). An opening window is formed in the loading wall (c) so as to be located on the optical axis of the optical system.

The film loading section (E) has a pair of left and right film receiving claws that protrude forward and diagonally upward from the bottom.
This film receiving claw (7) is used to hold the film C that was received.
When 3υ is stood up at 18 on the loading wall (c).

The film t'lυ is protruded at a position that coincides with the opening window g and the car. Note that the film 0υ is attached to a rectangular plastic film frame 1ff3.

- is a magazine case that accommodates film CDs in a stacked manner vertically, and is configured in the shape of a rectangular box with an open top.

Also, on the bottom side, there is only a pair of left and right receiving edges, and the receiving edges (broadcasting) have been removed.In fact, this magazine case 0υ is formed at the upper front position of the projector body (1). It is removably inserted into the projector main body (11) from the opening (G).In other words, a horizontal groove (to) hook is formed on the lower side of the front and rear walls (9@) when the magazine case is used; On the main body (1) side, an elastic holding piece 0q that is slidably fitted into the groove (T) and a holding part phase θυ that is slidably fitted into the groove (To) are arranged with a predetermined dimension in the front and back. By inserting the magazine case C1 between these elastic holding pieces 4 and the holding part fl'lυ, the magazine case C1 can be detachably attached to the projector body (1). Note that a positioning protrusion θ is provided at the tip of the elastic holding piece f41 so as to engage with a retaining hole (6) formed at the end between the grooves. This restricts the lateral position when the magazine is cased.The holding part 0η is fixed to a wall part θ integrally formed on the projector body (1) with a screw together with a white metal plate θ. Base plate 0
The uniform extends to the lower rear end side of the magazine case Q through the lower side of the holding member (B), and is made to correspond to the notch @e formed at the lower end of the rear wall cutout in the magazine case. The film frame 64 inside the magazine case a1 is attached to this cap plate by the adjustment screw 17) screwed onto the holding member 0.
It can be adjusted up and down depending on the thickness. The adjustment screw 07) is provided with an adjustment knob @ (2) with an indicator,
This can be rotated through the opening (2) by removing the magazine case (G). Furthermore, on the holding member θυ, there is a display board with a scale corresponding to the thickness of the film frame I3'3.
is attached, and by aligning the indicator with the scale, you can see the adjustment status of the base plate. In addition, on the inner surface of the rear wall (b) during the magazine case, a thin plastic plate 0υ is attached over the entire width so as to protrude from the notch θ (9) at the lower end, as shown in Figure 6.
The film frame ζ (4) is constructed so that it is difficult to fall off. 62 is a dispensing arm that dispenses the film 0υ in the magazine case Q backwards from the lower end side and supplies it to the film loading section (A). (1) is pivotably supported by a support shaft provided at the lower front end of the dispensing arm 6z.The tip of the dispensing arm 6z has an inverted shape with respect to the dispensing arm I2. The dispensing mold 6◆ is bent. The dispensing mold F (l is the lower end film frame (3'
It has a locking step 6 that engages only with respect to 4. Note that the dispensing arm 62 and the dispensing die 6 have a dispensing means of 4.4. ■ is a holding member for pushing the film frame C1B ejected from the magazine case (incorporated) to the film loading section (a), and is made of an elastic plate shaped like an auxiliary plate, and has a film receiving claw at the upper end. A pair of presser members 6''h are formed in a fork shape so as to be sandwiched from both the left and right sides.This presser member ←9 swings between the film receiving position (indicated by the imaginary line in FIG. 9) and the presser position. It is pivotally connected to the mounting plates Q and 9 by the support shaft (toward) at the lower end, and is biased toward the receiving position 11'C side by the tension spring G (h. The upper edge of the formed notch fvTh comes into contact with the rotating shaft Qυ, so that the receiving position is adjusted.

Q-1] is a return arm for returning the film (3υ) from the film loading section (A) to the OR magazine case. The first key is pivotably supported vertically by a support shaft 1i1 located at , and the distal end of the return arm Iυ engages from below with the film frame 0 of the film loading section Qθ. An engaging claw Q is provided.
As shown in Fig. 7, the upper side is formed with a sloping part that guides the film frame (2) laterally toward the center when it is raised, and the lower side is formed with a receiving claw position and a holding part at the receiving position ( An umbrella is formed on the slanted part (of the receptacle) that moves the film frame (2) received by the film frame (2) to the front side when descending and prevents the engaging claw C from being engaged with the film frame (2). has an arc shape, and the bottle at the tip of the dispensing arm 6 is slidably in contact with the lower edge of the dispensing arm. Receiving claw (2) of loading section (c)
It is designed to swing up and down so as to be located at the lower position and at the end portion of the guide path 1'2. Return arm t3υ
has an operating section that protrudes forward from a notch between the projector body (1) and the cover (2), and by operating this operating section up and down, a return arm separate from the six dispensing arms can be activated. 11) can be operated independently, and the return arm (
+υ is biased by a tension spring (7G) suspended between it and the bottle (2).

The guide path (gong) is formed by the outer guide wall (7υ) formed on the projector body (1) and the inner guide wall Q3,
It is provided across the top of the film loading section and the area above the opening of the magazine case. f41 is a driving means for driving the payout arm 64 and the return arm Iυ, and is composed of a worm Q9, a worm gear 171, a rotating arm gη, a link DI, and the like. Worm (7υ is 1 wide axis 1211
The worm wheel tJQ, which is fixed to the worm wheel tJQ and engages with the worm (7FG), is held between the flange part of the horizontal shaft (the boss member box rotatably fitted to 71) and the leaf spring fitting υl, When overloaded, only the worm wheel /I/ (7f9) can rotate relative to the boss member (iX).The horizontal axis (71) is fixed to the mounting plate base (c), and this horizontal axis As shown in FIG. 8, there is a boss part 61 of the rotating arm qη facing the boss member (E) at the tip of the pivot arm qη.
The boss member (2) and the rotating arm (3) can be freely connected and disconnected by means of a clutch member (e) in the case of a coil spring.

The clutch member 69 consists of a fill spring that is fitted around the outer periphery of the boss member ←) and can be tightened easily, and one end of the clutch member 69 is connected to the rotating arm f.
BI), and the other end is a protruding part (c) that protrudes outward in the radial direction, and when the protruding part comes into contact with the HVC stopper, the tightening against the boss member loosens and rotates. The movable arm q is configured to cut off power transmission to the movable arm q. The boss part 1) is provided with a stepped part (2) on which the stopper can comes into contact.

The stopper has a V-shape, and is attached to the support shaft c-shaped mounting plate (
It is pivotably supported by c) and is biased toward the boss portion 61) by a tension spring e7J. Stopper II
is attached by a magnet (H) so as to be separated from the protrusion (C) and the step (C), and its fugnet (N) is fixed to the mounting plate. Link QF9 is a rotating arm (c)
is connected to the tip of the pin O'
It is connected to the dispensing arm 6→ by I), and the upper end of this link QFD is provided with a guide portion (A) that curves outward 431 times. Rotating arm 0 is the holding member -
Slidably abuts against the midway bending part (56B),
At the time of contact, the presser member (A) is pressed against the film loading section (A). On the other hand, an elastic plate ← is provided below the rotating arm 0, which forcibly rotates the rotating arm &7) to the bending portion (56a) l[111. ← 4 is the feed switch, which is activated when the operation button ← East is pushed downwards, energizing the 0th row of magnets. The ring is a light switch, and Ql is a socket for remote control. The plane is an extinguishing switch that turns off the light source (1.D) during film loading operation. It is attached to the mounting plate Q51 and is operated from the lower end of the presser foot. (101) is a switch that turns off the light source (1.D). The base plate is completely integrated with the plate.

Next, the operation of the above configuration will be explained. FIG. 6 shows the loaded state in which the film frame C is pushed down by the loading wall of the film loading section (A) or by the holding member. In this state, if you turn on the power and turn on the light source switches fI, the light source α4)
lights up and can be projected. On the other hand, the motors C/J are activated, and the stopper (to) is connected to the stepped portion I8 of the rotating shaft (ID is rotating, or the stopper (to) is the protruding portion t3.1 of the clutch member (2) and the rotating arm V7). clutch member 0
Since the tightening on the boss member Be is released,
The boss member... only rotates around the horizontal axis in the direction of arrow a through the worm Q5 and worm wheel/Ill.
The rotating arm qη does not rotate, but remains stopped at the position shown in the figure, where it abuts the bent portion (56B) of the holding member tb.

Then press the operation button - and turn on switch 0''4.
Because the magnet ■ is excited and attracts the stopper,
As shown in Fig. 9, this stopper 6 is detached from the protruding part of the clutch member 6o and the stepped part 2 of the rotating arm gθ, and the clutch member is wound around the boss member 2, and the worm wheel lL
/(7!, The rotating arm 0 begins to rotate in the direction of the arrow a around the horizontal axis via the boss member ■ and the clutch member ■. Therefore, the dispensing arm 62 is pushed via the link (713). Support'IQll (J swaying in the direction of arrow b,
The magazine case C3; moves the film frame 03 of J'fJ shape in the magazine case 1 slightly upward to the dispensing start position indicated by the imaginary line in Fig. 10. On the other hand, since the bottle ←η of the dispensing arm 6 slides along the lower edge of the return arm II), the return arm swings upward on the spindle wheel as shown by arrow C.
Hook the lower end of the film frame 0 with the engaging claw 11 and lift the film frame 0 along the outer guide wall (lυ) of the guide path 432. At the beginning of the return arm's ascent,
As shown by the solid line in Fig. 9, the busy presser member is rotated by +7
Please touch 71.

Since it is not far from the loading wall (c), the film frame 0
The ship will definitely enter the guide route O Pier without getting caught in the wall section @→Hare. Then, the return arm 0υ is the 9th
As shown in the diagram, the film frame 04 that has been lifted up by the guide path (near the six end points 1) is thrown into the interior from the upper opening of the magazine case, and is stacked inside. It is stacked on top of a certain film frame 64. When the rotating arm (77) rotates approximately 1800 times from the solid line position in FIG. The return arms (6) have reached their upper end positions, and if the rotating arm 0 further rotates in the direction of the arrow a, the payout arm 6 will move in the direction of the arrow d, and the return arm Gυ will move in the direction of the arrow e. The dispensing arm swings to the lowest position in the magazine case Q.
At the same time as taking out the arm frame 64, the return arm f1υ engages the receiving claw (
Go back to the bottom of E). That is, the dispensing arm Q is the first
When it swings in the direction of the d arrow from the dispensing start position indicated by the solid line in Figure 0,
Stepped or lowest film frame C3'l of payout type 0/ρ)
, and is ejected rearward in the direction indicated by the arrow f through the lower side of the notch θ (from the back wall to the base plate) of the rear wall facing the magazine case. At this time, the presser member (G) is at the receiving position as shown by the solid line in Figure 10, so the film frame 0
'4 is the receiving claw of the film loading section e7) and the holding member r,
On the other hand, the return arm Qrυ swings downward in conjunction with the payout arm ○2, but this return arm While passing through the magazine case ■, it reaches the vicinity of the receiving claw C1) as shown by the imaginary line in Fig. 10, and the ejected fillem frame G ax reaches the receiving claw ■ before it reaches the upper VC of the receiving claw ■.
It is located close to the bottom so that it does not directly interfere with the film frame 04. If the film frame (2) is ejected and comes out before the return arm Iυ is lowered due to some reason, the film frame 04 is moved to the front by the lower inclined part of the engagement claw. Then, the engaging pawl passes downward.

Rotating arm tJ71 further rotates in the direction of arrow 8 from the imaginary line in Figure 10, and at the point when it comes into contact with the elastic plate ← 1) and passes over it, the rotating arm (C) is forced by the restoration of the elastic plate 0υ. a
It is rotated in the direction of the arrow, and its tip is pressed against the holding member (
After contacting the bent portion (56a) of (g), the stopper (g) engages with the protruding portion - of the clutch member 64, and the six clutch members transfer power from the boss member (i) to the rotating arm (c). The transmission is cut off, and the Nutopper plow engages with the stepped portion f8rjK to stop the rotation of the rotation arm (c). Therefore, the holding member (A) swings from the receiving position toward the loading wall (7), and its elastic force causes the holding member (A) to press against the loading wall (C) of the film loading section (A) as shown in Figure 3. Press to make a tight contact.

This completes a series of film loading operations. The movement of the presser member (A) turns off the switch (A) during these series of operations to extinguish the light source Q41, and the light source α is turned on again almost simultaneously with the completion of the loading operation. In the loaded state, hold the film frame o4 against the loading wall (c) with the holding member (7) 411
1, the position of the film on the optical axis is always constant, and each time the film is loaded, the projection lens unit (
9), and reliable projection is possible.

To take out the last film frame 04 from the film loading section at the end of projection, hold the operating section of the return arm Iυ and push it down.

Only this return arm (43υ) moves, and the film frame (2) of the film loading section (C) can be returned to the magazine case (G) in the same manner as described above. ).

No film frame (2) remains inside.

If the motor breaks down, just rotate the rotating shaft (21) by turning the tip of the rotating shaft ←υ (A).

The dispensing type (to) of the dispensing means is the dispensing arm el as described above.
In addition to being integrally provided at the tip of the i-gong and configured to move in an arc, it may also be configured to move in a straight line. For example, it can be configured as shown in FIG.

That is, the dispensing mold Gφ is separated from the dispensing arm (A).

A pair of left and right guide members (Y
7) is slidably supported. Further, the dispensing arm (32) and the dispensing type Q are swingably supported by a support shaft at any part of the projection lens unit (9). (in the forked part)
and a pin fixed to the dispensing claw 6Φ side).

Therefore, in this case as well, in conjunction with the rotation of the rotating arm (c), the dispensing claw (assembly) can dispense the film frames 04 facing the magazine case one by one and load them into the film loading section (3). .

The structure of the dispensing means, the return means, the mounting structure of the magazine case q, etc. are not limited to the embodiments. Although the cover (2) is still formed with an opening (100) having approximately the same shape as the opening (to) of the projector body (1), this may be made blind.

As described in detail in the embodiments above, according to the present invention, the film in the magazine case provided in the projector main body Vc is detachably provided, and the film in the magazine case is dispensed from the lowest layer side to the film loading section by the dispensing means, and the film in the film loading section is Since the return means returns the magazine case from the upper side to the inside through the guide path, the structure is simpler than that of conventional loading devices, and it can be stored compactly within the projector body. .

In addition, since the film is taken out from the bottom of the magazine case, loaded, and returned from the top of the magazine case, it is possible to continuously project films up to a predetermined sequence of films, and the number of films can be projected as desired. Very useful for endless projection.

Moreover, in the film loading section, the film is pressed and held by the holding member, so the position of the film in the optical system is always constant, and there is no need to adjust the projection lens by 1+'a each time the film is loaded.

[Brief explanation of drawings]

The drawings illustrate an embodiment of the present invention, in which Fig. 1 is a side view showing the external appearance, Fig. 2 is a front view of the same, Fig. 283 is a cross-sectional side view showing the internal structure, and Fig. 4 is a cross-sectional view of the same. Front view, 5th
The figure is a sectional plan view of the main parts, Fig. 6 is a sectional view of the main parts of the magazine case, Fig. 7 is a perspective view of the return claw part, Fig. 8 is a perspective view of the clutch part, Figs. 9 and 10. FIG. 11 is a side sectional view of the main part showing operation state (3), and FIG. 11 is a side sectional view of the main part showing another modification. (1)...Projector body, (9)...Projection lens unit), Q(1...Light source unit, (B)...Film loading section, (Cut...Film, G(a) ...Film frame, ■...Magazine case, t,'a delivery arm,
(Pick up...dispensing claw, ←V...returning arm, control...returning claw, 17υ...guide path, H...driving means. Applicant: Fujiki Shagu Kogyo Co., Ltd. １ノ de−′１ ma)゛ 9 Fig.

Claims (1)

[Claims] 1. The projector main body K is provided with a detachable magazine case into which films can be stacked from above and films inside can be taken out from the bottom layer, and the film in the bottom layer of this magazine case can be removed. A dispensing means for dispensing the dispensing film and supplying it to the film loading section in the optical system, a holding member for pressing and holding the dispelled film against the film loading section, and a holding member for pressing and holding the dispensed film against the film loading section; 1. A film loading device for a slide projector, comprising: a guide path for guiding the film to the film loading section; and a return means for returning the film in the film loading section from above into the magazine case along the path.