CZ200595A3 - Snap lock for joint rules - Google Patents

Abstract

The folding gauge, in particular with a visible rivet, with individual elements being pivotally mounted and anchored in the end portions of adjacent gauge panels (4). SUMMARY OF THE INVENTION The essence of the invention is that the clapper is formed by two flat profiled disks (1, 2) of circular contour provided with central holes (12, 22) for the rivet (3), where the diameter of both disks (1, 2) is smaller than the width of the panel (4 ), wherein the base (11) of the hard disk (1) and the body (21) of the positioning disk (2) are adapted to lock them together in the selected positions and to anchor them firmly in the gauge pieces (4).

Description

Folder for folding gauges (57)

Folding gauge for folding gauges, in particular with a visible rivet, the individual elements of which are rotatably mounted relative to one another and are anchored in the end portions of adjacent gauges (4). It is an object of the invention that the shutter is formed by two flat profiled disks (1,2) of circular contour provided with central holes (12,22) for the rivet (3), wherein the diameter of both disks (1,2) is smaller than the width of the divisions (4). ), wherein the base (11) of the hard disk (1) and the body (21) of the positioning disk (2) are adapted both to allow them to lock together at selected positions and to firmly anchor them in the gauge parts (4).

2005 - 95 A3

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Folder for folding gauges

Technical field

The invention relates to the construction of a concealed shutter for folding gauges with wooden pieces.

BACKGROUND OF THE INVENTION

At present, a number of constructions of folding gauges of various designs and modifications are known, which differ in the type of numerical designation, type of scale, surface finish, precision and above all the design and locking of the joint, so-called clapper, for connecting individual pieces. The flaps are made of different types of heat and surface treated steel or plastics and use different types of solid or hollow rivets.

In general, three basic versions of folding gauge latches are known, both with a visible rivet and a latch mounted and molded on machined wooden parts, with a concealed rivet and a visible latch, and with a concealed latch and a visible rivet, as is evident from the DE solution 3521108, DE 3737562 or WO 92/16816. A common disadvantage of all three basic types of gauges is the interruption of the scale by rivet, clap or rivet and clap, which reduces their legibility in several places. Another disadvantage of meters with visible rivet is the possibility of burrs during riveting, which can cause minor injuries during use, and the fact that the rivet protrudes above the gauge scale and creates small gaps between the bars which do not have aesthetics and affect the quality of advertising printing, which is very often used in these products.

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A disadvantage of meters with a visible damper is the disadvantage of the laterally protruding visible portion of the damper, which increases the width of the gauge and, in particular, reduces the overall side area of the folded gauge for side printing.

It is also known to design a folding gauge with a concealed rivet and concealed clap according to CZ PAT 285885, consisting of at least two pieces rotatably connected by a clap, consisting of two plates and a spring element, which are connected by a pin. The pieces of this gauge are connected to the shutter either by gluing the peripheral edges of the plates to the groove surfaces formed in panels of size, shape and depth corresponding to the dimensions of the peripheral edge of the plates, or by pressing the peripheral edges of the plates into the grooves. This construction ensures the legibility of the scale along its entire length, eliminates the possibility of burr injury from rivets or laterally protruding parts of the clapperboard and also ensures a good area for advertising printing when folding the gauge. The disadvantage of this design of the clapper is that it allows the locking of the pieces in individual steps only when rotated by 180 °.

It is also known that in all known types and types of claws, at least two technological operations are required to create the recesses for both the clap and the washer and to create a hole for the rivet, which is not optimal in terms of manufacturing process efficiency.

SUMMARY OF THE INVENTION

These drawbacks are largely solved by a folding gauge claw, in particular with a visible rivet, the individual elements of which are rotatably mounted relative to one another and are anchored in the end portions of adjacent gauge pieces. SUMMARY OF THE INVENTION The shutter comprises two flat profiled discs of circular contour provided with central rivet holes, wherein the diameter of the two discs is less than the width of the segments, the hard disk base and the positioning disk body being

-3 adjusted to allow their mutual arrest in selected positions and secondly for their firm anchoring in gauge parts.

It is further an object of the invention that the circular base of the hard disk is provided with at least two, preferably four, anchoring elements and on the other hand with at least two, preferably four, positioning beds regularly spaced around the periphery of the base. The spikes or center spikes and the beds are in the form of indentations or punches in the peripheral portion of the base.

It is also an object of the invention that the positioning disc body is provided with at least two, preferably four, fixation elements and on the other hand with at least two, preferably four, preloaded lightweight protrusions regularly distributed around the body circumference and the number and shape of the hard disk base seats.

Finally, it is an object of the invention that the fixation elements are in the form of circumferential spikes or center spikes.

A new higher effect of the present claw design is that the recess of the hole for the disk-shaped discs and the rivet hole can be carried out in one technological operation by means of a composite tool, with a precise countersinking of the circular hole with the thickness of the plate used for the discs, 35 mm, so that when there is a folded gauge there are absolutely tiny gaps between individual pieces, which is of great importance for the quality of advertising prints. Due to the fact that the whole clap is completely hidden between two adjacent pieces of folding gauge, there is no need to milled recessed holes in already painted, printed, varnished parts further surface treatment, such as dyeing, varnishing, etc. not only by a normal angle of 180, but also in individual steps of 90 ', which allows you to measure, control, draw and right angle without the need for additional aids.

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-4Description of figures in the attached drawings

A particular embodiment of a folding gauge claw is schematically shown in the accompanying drawings, where

Figure 1 is an exploded view of the shutter

Fig. 2 shows a plan view of the shutter anchored in the folding gauge pieces

Fig. 3 shows a side view of the shutter anchored in the folding gauge pieces

Figure 4 shows a plan view of a hard disk with two beds and four peripheral tips

Fig. 5 shows a front view of the hard disk of Fig. 4

Figure 6 shows a side view of the hard disk of Figure 4

Fig. 7 shows a plan view of a hard disk with two beds and four center spikes

Fig. 8 shows a front view of the hard disk of Fig. 7

Figure 9 shows a side view of the hard disk of Figure 7

Figure 10 shows a plan view of a hard disk with four beds and four peripheral tips

Fig. 11 shows a front view of the hard disk of Fig. 10

Fig. 12 shows a side view of the hard disk of Fig. 10

Fig. 13 shows a plan view of a hard disk with four beds and four center spikes

Fig. 14 shows a front view of the hard disk of Fig. 13

Figure 15 shows a side view of the hard disk of Figure 13

Fig. 16 shows a plan view of a positioning disk with two projections and four peripheral tips

Figure 17 shows a front view of the positioning disc of Figure 16

Figure 18 shows a side view of the positioning disc of Figure 16

Fig. 19 shows a plan view of a positioning disc with two protrusions and four center points

Fig. 20 shows a front view of the positioning disc of Fig. 19

Figure 21 shows a side view of the positioning disc of Figure 19

Fig. 22 shows a plan view of a positioning disk with four projections and four peripheral tips

Fig. 23 shows a front view of the positioning disc of Fig. 22

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Figure 24 shows a plan view of a positioning disc with four protrusions and four center points

Fig. 25 shows a front view of the positioning disc of Fig. 24

DETAILED DESCRIPTION OF THE INVENTION

The basic design of the shutter is formed by two flat profiled discs 1, 2 of circular contour, which are rotatably supported by means of a flat head rivet 3 and a washer 31 and which are anchored in the end parts of adjacent gauge pieces 4. The same diameters of the two disks 1, 2 are smaller than the width of the gauge pieces 4.

The clapper hard disk 1, providing precise definition of the fixed position of the pair of pieces 4 at a selected angle relative to their longitudinal axes, for example 0 °, 90 °, 180 °, 270 °, 360 °, is formed by a circular base U provided with a central connection hole 12 for rotatable The base 11 forming the contact surface between the two disks 1, 2 is then provided with at least two, preferably four, anchoring elements 13 and on the other hand with at least two, preferably also four, positioning beds 14 regularly spaced, e.g. The anchoring elements 13 may be in the form of peripheral tips 131 or center tips 132, either by bending a specially cut shape on the periphery of the base 11 or by punching the base 11 with a punch, for example in its central part around the connecting hole 12 for the connecting. 3. The beds 14 are in the form of embossments or plain The grooves in the peripheral portion of the base U may have a rectangular, oval, elliptical or circular plan shape and their number, i.e. two or four, is dependent on the requirement for securing the fixation position of the pieces 4 only by 180 ° or 90 °.

Positioning disc 2 of the clapper, used to induce a resilient bias, thereby causing a play free connection of the two base parts 1, 2 of the clapper and to resiliently arrest ft. · · · · 0 · ··· · · · · ·

The individual body 21, like the base H, forms a contact surface between the two disks 1, 2 and is then provided with at least two, but preferably four, positions. by means of fixing elements 23 and, on the other hand, at least two, preferably also four, sprung suitably lightened protrusions 24, regularly spaced, for example, opposite one another, around the periphery of the body 21 and corresponding to the number 14 in the form of circumferential spikes 231 or center spikes 232, made either by bending a specially cut shape on the periphery of the body 21 or by punching the body 21 with a punch, for example in its central part around the connecting hole 22 for the connecting rivet 3.

In the manufacture of the claw gauge of the present invention, conventional combination press tools and associated presses are used. The gauge piece 4 provided with the respective surface treatment, that is, painted, printed and varnished, is machined on a milling machine in several technological steps. First, the recess of the round recess for the clapper is carried out from above with the associated tool to the depth of the sheet from which the clapper disc 1, 2 is pressed. At the same time, a hole for the rivet 3 is formed in the divider 4, thereby ensuring the alignment of the clip and the rivet 3. In a further step, this operation is repeated from the bottom of the divider 4. The following step is necessary to recess the holes for the washer 31 on both sides. After these woodworking operations, one of the disks 1, 2 is precisely positioned in the prepared recess and pressed by the tips 131 or 132 or the spikes 231 or 232 into the piece 4 so as to be firmly fixed when moving to the next technological operation. The next procedure then consists only in riveting of the pieces 4, the composition and finishing of the gauge. It follows from the foregoing that two technological operations are avoided in comparison with the known and used production methods.

When folding or unfolding the gauge, the protrusions 24 of the positioning disc 2 act as a disc spring by suitable shaping and pre-springing and cause the necessary axial force necessary to limit the clearance and create the tension required.

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-7for a clearance-free locking of the position of the pieces 4 in the selected position. The locking of the gauge pieces 4 in the selected positions is then realized by snapping the projections 24 of the positioning disc 2 into the seats 14 of the latch disk 1.

Industrial applicability

The clapper according to the present invention can advantageously be used for all kinds of folding gauges, especially wooden gauges with visible rivet.

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-8PATENT CLAIMS

Claims (8)

Clapperboard for folding gauges, in particular with a visible rivet, the individual elements of which are rotatably mounted relative to one another and are anchored in the end portions of adjacent gauges (4), characterized in that the clapboard is formed by two flat profiled discs (1,2) circular provided with center holes (12, 22) for a rivet (3), wherein the diameter of the two disks (1, 2) is smaller than the width of the divisions (4), the base (11) of the hard disk (1) and body (21) The discs (2) are provided both to allow their mutual locking in selected positions and, secondly, to firmly anchor them in the gauge parts (4). The shutter according to claim 1, characterized in that the annular base (11) of the hard disk is provided on the one hand with at least two, preferably four, anchoring elements (13) and on the other hand with at least two, preferably four, positioning beds (14). distributed around the circumference of the base (11). Clapboard according to claim 2, characterized in that the anchoring elements (13) are in the form of peripheral tips (131). The clapper according to claim 2, characterized in that the anchoring elements (13) are in the form of central spikes (132). Flap according to one of claims 2 to 4, characterized in that the seats (14) are in the form of embossments or cuts in the peripheral part of the base (11). Flap according to one of claims 1 to 5, characterized in that the body (21) of the positioning disc (2) is provided with at least two, preferably four, fixing elements (23) and on the other hand with at least two, preferably four, spring-loaded lightened protrusions (24), regularly spaced around the periphery of the body (21), and the number and shape of the seats (14) of the base (11) of the hard disk (1). • · · · ·....... ft ··· Clapboard according to claim 6, characterized in that the fixing elements (23) are in the form of circumferential spikes (231). Clapboard according to claim 6, characterized in that the fixing elements (23) are in the form of center spikes (232). 00 0000 0 0 0 000 * »· ··· ♦ ·· ··? -, i Γ / J FIG.1 · · · **..... . ····:.; i «· .. * * ...........