JPS5814659B2 - sliding frame - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a slide frame, and more particularly to a slide frame suitable for close parallel storage in a slide magazine.

A slide magazine loaded into a conventional projector takes up too much space compared to the number and thickness of the slide frames to be held in the magazine.

That is, the slide magazine has a section with a width of 5.2 mm, which corresponds to the feed step of a conventional magazine projector, in order to accommodate a slide frame with a standardized maximum thickness of 3.2 mm.

In conventional magazines, each compartment is separated from both sides by side walls or dividing walls.

Therefore, the volume of a magazine for loading 36 slide frames is 630 cm3, whereas the volume of the thickest set of slide frames to be loaded into the magazine is 288 cm3.
There is only m3.

When loading a slide frame into a conventional magazine, the volume of the magazine used forms a corresponding layer.

Being too thick compared to the volume of the slide frame is essentially disadvantageous.

Thirty-six slide frames each having a thickness of 2 mm have a volume of only 180 cm3.

Particularly adversely affected by this disproportionate amount of space taken up by sliding frame magazines are amateur photographers who must make do with large volume magazines.

Known slide magazines (DE 1901 091) each consisting of modules or a spring-loaded slide holder (DE 2145 927) connected to one another allow for storing, changing and transporting slide positives. This is difficult to do, and in some cases requires a special projector slide switching or replacement mechanism.

However, conventional devices are not suitable for reducing the space of the slide magazine.

On the other hand, when storing the slide frames, there are some that save storage space mainly by connecting the slide frames to each other without using a suitable container or magazine.

In the slide frame package described in German Published Publication No. 2031484, holes are formed in the corners of the slide frame arranged in a row at equal intervals, and rivet-shaped pins are inserted through the holes arranged in the row. The slide frames are swingably connected to each other via the slide frames.

In principle, a special projector is required to project such slide positives in one package, and such projectors are not suitable for projecting ordinary slide positives at least semi-automatically. do not have.

Furthermore, the slide frame described in German Patent Publication No. 1 296 820 can be combined with other slide frames into one frame package, in which case each slide frame can be pulled out of the package and put back again for projection by a projector. can do.

In this case, each flat side of the closed frame is provided with parallel upper and lower protrusions having cross-sectional axes that are inclined and facing each other, and these protrusions extend to the opposite planes of the adjacent slide frames. It slides into engagement with the provided protrusion.

This known slide frame embodiment also requires the use of a feed system that is essentially different from that of conventional projectors in that projection, particularly slide replacement and continuous projection, is not possible.

Since this known slide frame has protrusions projecting outward from the plane of the frame, it cannot be inserted into an ordinary compartmented magazine or slide holder as it is.

The production of this known sliding frame is very expensive, since the die-casting mold cannot be closed or removed without tilting due to the required bevel.

As described above, conventional slide frames and slide magazines do not take into consideration how to tightly and reliably hold and store the slide frame.

Therefore, an object of the present invention is to provide an inexpensive slide frame that is suitable for being held and stored in a slide magazine tightly and without falling off.

According to the invention, this problem is solved by providing an uneven part having at least one groove 15 along at least one side edge of the sliding frame and using the uneven part for holding the sliding frame.

The slide frame of the present invention is preferably housed in a slide magazine having a concave and convex portion that complementarily engages with a concave and convex portion of the slide frame.

The slide magazine for storing the slide frame of the present invention is provided with a relatively short side wall, and the side wall is provided with a complementary uneven portion, so that only the lower uneven edge portion of the slide frame is captured and the guide groove is inserted into the slide magazine. Hold firmly and tightly.

This allows all the slide frames held within the slide magazine to be held, stored, and carried together in a nearly intimate manner within the magazine in a way that has not previously been possible with slide frame packaging other than direct grouping. becomes possible.

The essential advantage of the present invention is that the slide frame held together in a new magazine is formed by the fixed protrusion of the slide magazine and the uneven portion provided on the side edge of the slide frame caught in the guide groove. This is because the engagement surface prevents it from falling off.

Therefore, even if a magazine filled with slide frames is turned upside down by the open top, the slide frames held by this device will not fall out.

As described above, by providing the uneven portions on the side edges of the slide frame according to the present invention, it becomes possible to reliably hold and store the slide frame between two adjacent side walls of the magazine.

In order to ensure reliable removal and insertion from the magazine, the thinnest part of the slide frame, i.e. the groove, extends to the area of the corners of the slide frame.

In order to project the slide frame according to the present invention on an automatic or semi-automatic slide projector, it is necessary to be able to adjust the length of the advance step.

It is appropriate that the projector be capable of switching settings for transferring the conventional magazine from one section to another, and also capable of transferring the slide frame stored in the above-mentioned magazine.

Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 1 to 4, the magazine that tightly accommodates the slide frame according to the present invention includes a base plate 6, side walls 10 that are arranged parallel to each other at intervals, and that form a guide groove 8.
Furthermore, it has a guide groove and a back wall 12 that partitions the back of the substrate 6.

A rib-like protrusion 14 extends along the upper edge of the side wall 10, and the rib-like protrusion 14 protrudes into the associated guide groove 8 to allow a slide to be inserted into the guide groove 8. It engages with the groove 15 of the uneven side edge 16 formed complementary to the frame 4 .

The groove 15 is separated by a protrusion 18 formed on the side edge side of the slide frame parallel to the side edge, and when the slide frame is inserted, the protrusion 18 becomes a rib-like part of the side wall 10 forming a guide groove. It engages with the protrusion 14 of.

A plurality of parallel protrusions 19 are vertically provided on the front surface of the back wall 12, and each protrusion extends perpendicularly to the surface of the substrate 60 on the surface where the side wall 10 is present.

A receiving groove is formed between two adjacent protrusions 19, and the side edge of the slide frame engages with the receiving groove.

As a result, the slide frame 4 already captured in the guide groove 8 is further held, and the uneven side edges and the side edges held behind are prevented from moving up and down or being distorted laterally.

Since the side walls with the rib-like protrusions 14 and the protrusions 19 only engage with the relatively thin unevenness on the edges of the slide frames, the plurality of slide frames can be arranged perpendicular to the base plate 6 and relatively spaced apart from the associated guide grooves. It is possible to match them by filling them together.

In that case, a pair of adjacent guide grooves 8 or side walls 10
The average interval between the protrusions 19 (as well as the adjacent protrusions 19) is made slightly larger than the thickness of the outermost part of the slide frame 4 held by the guide groove (FIG. 3).

Since the guide grooves 8 between the side walls 10 are open toward the bottom 20 of the magazine, there is no problem in integrally molding the magazine 2 from plastic.

The rear ends of the side walls are formed on the back wall 12 and the front ends of the side walls are formed on the substrate 6, respectively.

To facilitate insertion of the slide frame into each side wall, the protrusion 14 that engages with the frame is rounded 21.

A spring-like locking piece 22 is provided at a position away from the side wall 10 of the board 6.
are installed or preferably integrally molded.

Each locking piece is aligned with the guide groove, and when the slide frame is in the stored state, captures a corner of the slide frame from behind, thereby maintaining the slide frame in the stored state.

Each slide frame is slidable in the direction of double arrow P (FIG. 1), and can be pulled out from the stored state by removing the engaged edge portion 16 of the slide from the guide groove between the side walls.

In that case, the locking piece 22 that firmly holds the slide frame 4 in the stored state is pushed into the space 26 formed within the base plate 6.

A rack with a switching or feed dog 27 is formed in the area of the space 26 .

Although this was not possible with conventional magazines, the slide magazine 2 makes it possible to create a compact cassette magazine in which the slide frames can be arranged in parallel without separation due to an intermediate wall and with only a small amount of clearance required. became.

The slide magazine 2 can also be used as a projection magazine as well as a conventional magazine or a slide container, in which case the slide changer captures the upper margin of the slide frame to be replaced and moves the next slide frame to the double arrow. P
direction and move it to the projection plane.

The slide frames in the magazine 2 are stored more closely adjacent to each other than in conventional magazines, so the step of moving one slide to the next is shorter than in conventional magazines. unable to take advantage of it.

This requires a suitable device for switching the projector according to different feed step widths.

5 to 11 illustrate various embodiments of the sliding frame according to the present invention, each of which has a concave and convex portion on the side edge so as to save space when storing, carrying, or pulling out the frame. Figure 1~
It is possible to hold it in the magazine described in FIG.

The slide frame 4 shown in the plan view of FIG. 5 and the sectional view of FIG. 6 is provided with T-shaped uneven portions 16 on each of its four side edges.

Therefore, even if you use the side edges on both sides of the slide frame, the first
It can be inserted into the guide groove 8 shown in FIGS.

Elongated grooves 15 are formed on both sides of the uneven portion, and engage with the rib-shaped protrusions 14 when the slide frame is housed.

The elongated groove 15 is formed by a rib-like protrusion 16 running on the outside and a shoulder 27 of the slide frame on the inside.

The thickness of the corner portions 23 of the slide frame is approximately equal to the thinnest portion of the slide frame unevenness in the region of the groove 15.

Since the groove 15 also extends to the corner portion of the slide frame, it is possible to easily insert the slide frame from the flat corner portion when inserting it into the guide groove of the slide frame.

FIG. 9 is an enlarged view of the uneven portion 16 on the edge of the slide frame, which is marked with a circle and marked with an x in FIG. 6.

From the figure, it can be seen that the thickness a at the widest point of the uneven portion of the side edge (within the region of the rib-like protrusions 18) is slightly larger than the thickness b in the region of the groove 15, but the thickness of the slide frame itself at its widest point is It can be seen that it is clearly smaller than C.

For example, if the protrusion between the side walls of the magazine in the area where the protrusion 14 protrudes is the difference between C and b, the slide frames can be housed in the magazine in close rows.

FIGS. 7 and 8 show another slide frame 4' according to the present invention, in which the uneven portions on the side edges around the slide frame 4' are formed differently on the front and back sides of the frame. has been done.

The two elongated grooves 15a and 15b are provided in parallel, but at different distances from the side edges.

The rib-shaped protrusion 14 of the slide magazine 2 is connected to the slide frame 4.
If the slide frame is formed in a shape complementary to the groove 8, the slide frame can only be inserted into the guide groove 8 in one direction, that is, in the lateral direction.

FIGS. 10A, 10B, and 10C illustrate various embodiments of the uneven portions on the side edges of the slide frame.

The side edge of the slide frame shown in Fig. 10A has an uneven part on one side, and the side edge of the slide frame shown in Fig. 10B has an uneven part in the shape of a swallowtail. 10
A symmetrically rounded narrow groove 15 is formed on the side edge of the slide frame shown in Figure C.

FIG. 11 shows a sectional view of another embodiment of the magazine and slide frame.

In this case, the side walls of the magazine are each formed in the shape of a rail, and the fork-shaped uneven portions of the slide frame are placed over the side walls of the magazine.

Therefore, each half of the two slide frames will fit between the two side walls.

[Brief explanation of the drawing]

FIG. 1 is a cutaway sectional view of a slide frame according to the present invention and a slide magazine that accommodates the slide frame, FIG. 2 is a partial plan view of the slide magazine shown in FIG. 1, and FIG. ■A sectional view taken along the line 1■, FIG. 4 is a partial elevational view of the slide magazine seen from the direction of ■ in FIG. 2, and FIG. 5 is a plan view showing one embodiment of the slide frame according to the present invention. , Fig. 6 is a cross-sectional view of the slide frame along the line ■-■ in Fig. 5, and Fig. 7 is a cross-sectional view of the slide frame showing a modified example of the slide frame.
8 is a sectional view of the slide frame taken along the line ■-■ in FIG. 7, FIG. 9 is an enlarged view of the part indicated by X in FIG. 6, and FIG. 10 A-C are respectively FIG. 11 is a cross-sectional view showing a modified example of the uneven portion of the slide frame of the present invention, and FIG. 11 is a cross-sectional view showing a state in which the slide magazine and the uneven portion are engaged with the uneven portion of the slide frame. 4... Slide frame, 6... Board, 8... Guide groove, 10
... side wall, 12 ... back wall, 14 ... ridge, 15 ... groove,
16... uneven portion, 22... locking piece.

Claims (1)

[Claims] 1. In a slide frame for holding slide positives that can be inserted into a magazine, grooves 15 extend along the entire length of the side edges of each of the four sides of the slide frame, and each groove is connected to the slide frame. on a flat part parallel to the plane of the slide, thereby forming a ridge 18 at the end of the slide frame, which ridge 18 decreases in the corner region 23 at least to the height of the bottom of the groove; The slide frame is thereby characterized in that the slide frame can be inserted and retained in the magazine from any direction along the corresponding complementary guide grooves 8 of the magazine 2. 2 The maximum thickness of the protrusion is smaller than the thickness of the slide frame《
The slide frame according to claim 1, wherein the slide frame has the following characteristics. 3. The slide frame according to claim 1 or 2, wherein the cross section of the portion consisting of the protrusions and grooves is a swallow-tail shape or a T-shape. 4. The cross section of the portion consisting of the protrusion and the groove has two L-shapes with short legs facing each other, and a space is provided between the short legs. A slide frame described in any one of the items up to item 3. 5. The slide frame according to any one of claims 1 to 4, wherein the portions consisting of the protrusions and grooves are asymmetrically provided on both sides of the slide frame. 6. The slide frame according to claim 5, wherein the cross section of the portion consisting of the protrusions and grooves is L-shaped. 7. The slide frame according to claim 5, wherein the distance between the groove 15a looking into one frame surface and the frame centerline is different from the distance between the groove 15b looking into the other frame surface and the frame centerline. .