DE3331729A1 - Bracket for fixing, holding together or clamping material - Google Patents

Abstract

A bracket for fixing or clamping material (or in the reverse sense) comprising a bent piece of material in the form of a relatively thin and sharply curved surface support, at least the one of the two curve limbs being plastically deformed in order to increase the bending and twisting stiffness, and in order fully to utilise the material in the event of stressing in the vicinity of the curve, the height of the support at right angles to the angle bisectors of the limbs not exceeding the extent of the spacing between the limbs, and the numerical product of the ratios of the radius of curvature at the apex point of the bracket to the support thickness and the extent of swelling, to the distance from the centre of curvature of the apex point to the point of closest limb separation being greater than or equal to unity. The brackets can be manufactured from strip material or can be produced integrally assembled, and matched in terms of size and shape to the various applications. The plastic deformation on the limb preferably takes place in indentations or beads, in accordance with a calculation of the clamping force and the permissible deformation.

Description

- r> - ·; 3331723

Brackets in themselves have the purpose of being temporary or To hold loose parts together permanently, or to fasten them loosely to fixed parts * Other clamps are used for holding lids on or for closing containers, including flexible ones or, foldable type, sacks, pouches, etc., again others are further to wider clamping devices, e.g. Klemni folders, designed in a constructive manner. Examples of the most varied designs and Applications are clips for laundry on linen or threads, for towels on table tops, for straps on trousers, for sheet material such as letters or office paper, for clothes, for lids on jars, for folds on trousers, for closures of bags or Bags.

In a number of known brackets, the Clamping pretension through own spring elements, · im general coil, leaf bending and torsion bar springs, or made by own spring element parts. It;

- ° there are also two-part ones with bow springs, finally integrated clamps with tongues that can be clamped in different ways. In some cases, detachable loop connectors are used instead of clamps. The technical status is closer to two areas

~ 5 set out. With a two-part, pincer-like Haiterklerame according to DP 1 167 771 becomes an arch-shaped one;

Basic fedoreJement by beading into the arch stiffened and designed like a hinge at the end of a shorter leg for the rotatable connection of a locking and clamping lever. The basic spring element is extended via an inserted, suitable clamping part gert on which the tensioning lever, the bow angle.verklei- ■ h nerning, has an effect. The item to be clamped is clamped in the 5 Bogon spring.

. BAD ORiGINAL ^ ■ -!

When it comes to wire paper clips, it is well known that the various types of windings are used. In general when sheet material is inserted, a partial turn is spatially deformed or offset from another, and so a clamping form fit occurs. This causes a clear imprint on the goods or leads to it a design with too great a thickness of the goods for overstressing the coil spring at the coil sharpness, primarily in the non-tensioning area, and thus to a lot or to a non-reusability.

The elasticity of the material is greater simply because of the elasticity of the material or ability to achieve, as has been suggested on various occasions, makes it much more difficult ' Measure the materially tolerable deformability, so that with plate or leaf-shaped brackets, beads or undulating shape-closing deformations such as in PS 136 714, especially when they are congruent to one another should be in the plates, only with difficulty or no more

-o are memorable. Non-metallic, cast brackets have little elastic tension anyway. Hard, high-strength material is also little for bending up the edges of the narrow sides is suitable, deburring is particularly difficult. Also the com-

-5 plied cutting of small sections as at PS 381 8lo reduces the service life in the tool not insignificantly, regardless of the fact that here the spring part is shortened.

In addition to the deformation resistance of the material, there is also the difficult connection, which is then followed by other elements are carried out on the spring parts, especially welding or spot-welding, which is necessary, for example, with self-sparing clips that are special levers should be brought to open.

BATH ORIGINAL

Paper clips made from punched thin sheet metal parts with _i; j

Tongues, especially those with internal ones, are: .M;

disadvantaged in the spring area because they are in the holding part. O;

by bending the tongues U * against each other:

■ loaded and only by the friction and deformation. * -

frame between the individual legs or legs. ' ,; > ί

and tongue are prevented from slipping, about '[■;}%

in addition, the possible clamping thickness is very small. ί ■ "

The tasks for an innovation are:,; _r '. #>

the previous disadvantages, such as the difficulty of the ''. U ^ k

shaping of the spring material, prematurely exhausted, '' _: * «

thus little resilience and indefinite j in the,: ^ J

Mass production strongly scattering spring characteristic, Aus ¹ ^ l

J ¹ · »Eliminate the risk of leakage from the goods to be clamped- ΐ:!

or significantly reduce it, including a cost.: - ] f ~%

cheap production and reduction of the permanent., ii

Try to reach the imprint in the stretched good. · _; . · "I

2 "o Ais special tasks emerge,. '■, ίίί

a bow spring made of flat material in a composite. ,: i

to be used with the clamping and support parts with a certain, So ^ · "'^ fJ progressive characteristic, by stamping. ^: ;' .ί | $ of the flat parts or plates, especially on the outside ^: is: i

running of the bow spring the stiffness of the spring and the ^

Raise plates, ■ '. ■ - "'^ f

smooth edges all around with largely flat construction. ö and outer surface that can be labeled or painted to '''pi received, the clamped goods largely before dismantling and

^ Press P to spare. - ^ ".:

The cost manufacturing should be an execution>■;_"-:
from the sheet metal strip in a combination tool C
borrowed, where appropriate the sheet softened in places
or is made plastically deformable. With especially

thin, metallic edged tape are tight
toleriert.e curvatures and thus spring accuracies
necessary. · BADORLGiNAL

The similarity of the application tasks is intended through Similar, albeit different in terms of size, system design with as much as possible the same (basic element the bow spring to be Erziellmr, whereby also different surface-estimated or corrosion-resistant Materials should be usable.

The solution to the tasks of a bracket. To hold and Clamping of material is achieved in that leaf-like legs on a thin, steady and strongly curved Surface beams with an arch of more than. 13o (arch support) and at least one leg in or up to the vicinity of the curvature symmetrical to the middle of the width (Mo Pig. lc) so spatially plastic and solidifying is deformed inwards that the leg or legs outside the spring area of the arch (ο Fig. la) Become more rigid and torsion-resistant and thereby the arch support at least one deformation component under load on the overall suspension like the leg.

2-O and the material of the bracket over the length of

. Arch support and legs approximately the same and within the elasticity is claimed and the number product of the ratios of the radius of curvature at the vertex of the bracket designed symmetrically to the bisector of the legs Arch beam thickness and spring back distance to the distance from the center of curvature at the vertex to the point narrowest leg spacing (do Pig. la) is greater than or equal to one and

the height of the arch support orthogonal to the angle shark, benden does not exceed the distance between the legs (h Fig. la).

In particular, it is noted that in the clip according to claim 3, the plastic deformation in üinprägungen or beading takes place, which is the bending moment of inertia the leg raised around the arch axis (MM Fig. Ib)

"bad original

in the case of the clamp according to claim 9, the deformation of the one Leg in the form of a tongue in or through the opening of the corresponding other leg engages (Fig. 6).

in the clamp according to claim Io the deformations in the 'Legs together with the shape of the item to be exciting correspond (Fig. 7).

in the clamp according to claim 12, the elastic deformation of the curvature of the resilient arch support part of a corresponds to increasing clamping force with increasing clamping thickness (Fig. 8).

in the clip according to claim 13, the radius of curvature of the Arc is smallest or largest at the apex and steadily increases or decreases towards the outside (r ο or r o * Fig. 8).

in the clip according to claim 15, the legs extend over -o expand the lingstmafi and continue nonlinearly . (Pig. *) ■

in the case of the clamp according to claim 25, the material is spring-hard and corrosion-resistant,
25th

in the case of the clip according to claim 26, the material consists of different materials in the core and in the cover layer, the core material corresponding to claim 25 (i Fig. '»)
■ 3o

in the case of the clip according to claim 2Q, the production with Composite tool (cutting, bending, shaping) can be done in one operation from the tape.

■ 3 5 in the clip according to claim 3o through the production Composite extrusion with a combined arrangement

* §AD ORIGINAL

Plastic / metal with subsequent separation as required Width takes place.

The staples can be used in a variety of ways, such as use as a paper clip, clothes peg, tablecloth holder and 'clamping tongue'.

Compared to the previous statements and suggestions for brackets, the solution to the tasks stands out because the spring area is separated from the clamping area, however remains integrated, the spring according to the design requirements in terms of thickness, width and radius of curvature as well as arch is dimensioned and is therefore able to cope with repeated uses. The legs can be shaped according to the application by means of beads, with these beads simultaneously the pretension and the Influence the spring characteristic. The surfaces are. Can be written on and / or printed in an advertising-effective manner, which in turn can be linked to surface and edge protection. Due to the relatively large design of the clamping and tensioning leg parts will be the permanent one Danger of imprints on clamped, sensitive goods reduced or completely eliminated.

-5 The simple sizing allow for each Areas of application the realization of the Similarity principles and thus the simplification of the rt'erk / .eug-La. ^ Conservation. The construction leads beyond that to a lower risk of permanent deformation in the clamp than before, and the damage of good or the failure of the clamp function .. are avoided. . "

description

Brackets are used for a wide variety of uses
manufactured in a wide variety of designs.
The same basic principle of arching is applied to all

carrier with attached thin legs used.
The principle of the solution is shown in FIG. 1. In Fig. 2
and 3 are exemplary two embodiments for
Paper clips, shown in Fig. 4 in section one for a table Ιο cloth clip. FIGS. 5 to 7 show exemplary designs for other areas of application in the
Principle, for example Fig. 7 for a clamp with a UMA rope suspension. In FIGS. 9 and 10 are possible expansion ". · '" Bv conclusions l'ÜR Blattguthai Chippings with losbarer ^Kopfbe-: t' ^ j

writing, in the example 10 for a picture holder with ':';

^ Legs that can be placed on the table are listed. The _; 'i,

Fig. 8 shows the basic characterization of the. 'ί ,. On suspension in addition to Fig '. I and Fig; Il as well as: ';'

the inner and outer sides of the bracket leading to. r * ^; - ^ o can be coated for various purposes. ^; ; -ΐ

In Fig. 1, the clamp or spring principle is both ^ d in the side view (Fig. la) as in the plan view; 'i; .i

(Fig. Ib) as well as in section AA (Fig. Ic) shown in more detail and explained in the following. The brackets put ^: M consists of a curved beam, in principle that of a ...;. 1; j arc with the total angle 2 «*, and connected '.' thin, flat legs S together, where the -. ". '
Entire integrally designed or the legs example. · ■■ "
can be spotted wisely. In the general form
the bracket becomes symmetrical - in section - to a ^v

Level PP executed, in such a way that the bracket through
. an extreme value of the curvature r at the vertex with the " _:
Center on the line PP (characterized by the
Radius of curvature) and the legs S with the projected
• * 5. Length 1 and the enclosing angle 2 β in the approximate

BATH ORIGINAL

strained state are characterized. The '.curvature -. ". · Radius r is assumed to vary continuously over the angle OC, only in Greiv / .fnll is or constaut. The arch support has a thickness Sv, der attached legs one of s _g . The possible, achievable and to be produced curvature is constant due to the continuously changing radius of curvature r due to springback after the shaping. . Transition to the leg at the end of the angle (% and the transition area OCi - Oi , which in turn is influenced by the Siokenimprint (example). The beading (Pig. Ia) ends after a length 1 ,, where it (Fig Cross-section can have a triangular profile with an opening angle V * and a depth t, it merges with a radius of curvature k (Fig. La) in the plane of the leg the arc axis MM (Fig. la and b), e.g. because the legs at the end of the legs, i.e. at the narrowest spacing point d _{Q of} the legs, are brought to an idealized distance dimension with a force for springing up in the direction Y. an opening on both sides creates a moment with the effective lever 1 + r, which leads to a bend (Fig. 8) of the legs around u from line 1 to 2 and a change in curvature ν from r to r variable resistance or moment of inertia along the arch support and leg a "tensioned" cross section equally at all points is achieved, whereby the material is fully utilized.

Between the dimension d (Fig. La) and dom Grenv5aufsperrma.U d, which should at most grow to the bracket dioke h, If the thickness of the goods to be clamped lies a certain effective spring force perpendicular to the goods

* ORIGINAL BATHROOM

vycts. Both; ^

creative (Fig. 5) as well as the sliding value influencing (Fig. 11, j) possibilities can be used. ..! .. '. Audi are embossed thick (Fig. 1) with a Si - ^r) Length 'BGJ · transverse to the longitudinal axis of the staple PP possible.

The edges (Fig. Ic) ■ -

be tilted with a radius r _r , this can also. V to the end (3, Fig. 2) happen. .

The original bracket length 1 + r is given by the Tensioning or outer springs brought to length 1 *, they. K-lies below the length to the intersection of the vision Γ

kel 1, if brackets are used without a leg extension.

be sought. The ratios between bracket width b and length 1 * are important for application and interpretation '* · . ">' \

(Fig. Ib), the manufacturing curve for the arch: *

carrier thickness s. or strip thickness s and the angle ratio,. ".; -"; - ■ · - nis d to the "leg" - length 1 (on the plane PP pro- ■ josed) or d to l * -r. Including the elastic ■■ -. ·. ' modulus of the material or the used work-

I2o, stoffe ,, here spring-hard steel is always ahead!

sets, this creates a decisive clasp. · '^;; ^: laying. . ' _: .-; ■;

The principle bracket, to a certain extent the basic spring : of the brackets described below, can be expanded and modified. So is in Fig. 4 in side. . ' .i view of a clip for attaching cloths to -Vj

Plates with thickness q considered. The suspension.,

is q - q,, it is carried over to an Auffede- .. ".:

tion at the end of Schenke Hang 1. The legs become.; ■ -. ·

on the one hand by 1 ,, on the other hand lengthened _{by 1 2} and: λ then bent to an additional length c _o , in the example at right angles to 1 ,, on the other hand lengthened with an arc U, so that this leg L by the length dimension c-, opposite o ₀ lags behind.

3 "3 This embodiment is also conceivable symmetrically, in Fig. '[ Shown in dashed lines as g.

Basically modified in width are brackets, where one leg is _{wider in its width b o} than the other leg (Fig. 2), the transition of the wider leg takes place with a Hadius r ".. This allows sheet material to be pushed on To be made easier to clamp together, however, increases the cost of processing tape material. The imprint can be punctiform with tig on the curvature probe (Fig. 2) or several times, for example on the sides (Fig. 3) in the form of cones 5. The shape of the embossing depends on both the material and the clamping effect. Sharp-edged corners are also avoided, both on the slightly bent tab 3 a Lu and on the leg, for example with a radius r. (Fig. 2).

A design with a narrower leg end b (FIG. 6) is particularly modified, which is so long that it can be seen as a tongue through a recess with a width b, -> h _{l {} paiit. The land width (b - b _r ) / 2 as well as the remaining transverse web must be adequately dimensioned.

Instead of straight or flat legs, there are also legs with a corresponding corrugation k - for example within the boundary w - (Fig. 5) possible. The end can also be certain antidotes or Materials, e.g. a rope with a diameter D This increases the clamping and the Ilalto force.

For alternating clamping of several parts there is the various design options, of which one in FIG. 9 is picked out. Here is that Opening or clamping case ö. Different from that of ö „. The increment 1 is permitted (! Ine pre-so ty. Stacking with such a width that all characters can be resolved are, however, the total offset 1 can limit the application in the number of turns. Becomes beneficial

the end tuL l tilted to a radius r ^ according to the curvature of the arch r. In a special form, the legs can be molded -right-angled with a length c ^, so that a support surface is created. If the legs are bent at an angle of less than 90 °, the result is a pair of pliers with an opening dimension ", whereby a contact point of articulation is created at the end of the opening t when actuated (Figure 10).

Noteworthy when using integral brackets is the use of thin tape that goes into a combination tool cut, bent and at the same time: is shaped, the imprinting of the shape is at the same time an accurate imprinting of the spring. With trimmed edges the result is a burr-free part that is used for surface coating ο (Fig. II) with a paint that can be written on was or is suitable, but on the other hand has an anti-slip coating j. In extension Verbuiid staples made of plastic can help with this idea Steel extruded and trimmed in width or

-o be cut to length.

Referred publications
'I. Utility model G 82 25 o38.3, B' (2 P l / o2

2. Company brochures: "

vom'Hofe & Sehoppmann KG, 588o Lüdenscheid Gebr. Ol Deine i er GmbH, 32 83 Lüg de Krs. Kippe Lorenz Hecke! Mann & Sons, 8736 Burkardroth-Waldfenster Brothers Funke, 5768 sinners / acid land.

Ahgreir / .ungspatents:
: PS 8o 2 8o ν. -2 1.Ο9. 18ΦΙ ■ ■ ·

PS 13b 71 '»v. Wl. 12. It) Ol

PS Wlo 336 v. 18. o3. 1 <) <> 2

PS 381! II «v. June 21. 19 Ib / 3o.08.I92I '·

Priority. ^ Aäü UBGM (1 82 25 o38.3 v. 25-. 11.1982 /

Claims (1)

Scheipers, Paul, Nieinergs Weide 43, Vi2o Coesl'eld Expectations: . . ' . · Clamp to hold or clamp goods together in one piece, characterized by "dall" 1. leaf-like leg on a thin, steady and strongly curved surface support with an arc of more than 13o (Bogon support) on the sole i hurry and at least one leg in or up to the vicinity of the curvature symmetrical to the center of the width (Mo Fig.Ic) is so spatially plastic and solidifying inwardly, dall the leg or legs outside the spring area of the roe (pCo Fig. la) bending and twisting become stiffer and · ■ as a result, the roe carrier has at least a deformation proportion of the sanitary suspension under load. .! uit like the thigh
and the material of the bracket over the length of the roe carrier and leg is approximately the same and within the elasticity and the numerical product of the ratios of the radius of curvature at the apex of the bracket, which is symmetrical to the bisector of the legs, to the dog carrier thick and Auffedermail to the distance of the center of curvature in the vertex at the point of the narrowest leg spacing (do Fig. la) is greener or equal to one as well
the height of the arch support orthogonal to the angle ha I-benden does not exceed the distance between the legs (h Fig. la). 2. Clip according to claim 1, · ·. · The thickness of the legs equal to that of the roe sluggish rs is, 3. Clip according to claim 1, the plastic deformation in impressions or Beading takes place - which is the bending moment of inertia of the Leg increased around the arch axis (\ ai Fig. Ib), i \ . Clamp according to claim 3, the beads have a wedge-shaped cross-section tapering towards the ends, . 5. Clip according to claim 4, several beads side by side in the longitudinal direction are arranged 6. clip according to claim 4, i "5. transversely to the longitudinal axis of the legs in the clamping area Sieken in addition to the stiffening longitudinal beads are arranged (bead Fig. Ib), 7. clip according to claim 1, -o the plastic deformation is punctiform is (Figs. 2 and 3), 8. clip according to claim 1, the deformation contour of one leg of the corresponding to the other leg (Fig. 5), "■ ·" 9. Clip according to claim 1 _; the deformation of one leg in the form of a. Tongue engages in or through the opening of the corresponding other leg (Fig. 6), . ' Iq. Clip according to claim 1, the deformations in the legs together the overall - ■ J ^1} correspond to the Stait exciting material (Fig. 7), 11. Clip according to claim 9, the leg tongue has a deformation corresponding to the shape of the goods to be clamped (Fig. 6 and 7), 12. Clip according to claim 1, ■. the elastic deformation of the curvature of the resilient Arch support part one with increasing clamping thickness corresponds to increasing clamping force (Fig. 8), 13. Clip according to claim 1, ■. . the radius of curvature of the arc at the vertex is smallest or largest and increases or decreases too steadily towards the outside (r o or ro * Fig. 8), 1'4. Clip according to claim 1, the legs towards the curved surface carrier in the non-tensioning state have a pointed, enclosing one Form angles, run roughly parallel to each other in the tensioned state (Fig. La), 15 · Clamp according to claims 13 and 14, the legs widen over the narrow street and continue nonlinearly (Fig. 4) » 16. Clip according to claim 15, one leg is right-angled, the other, curved and both continue in the same ^{direction (B 1} Ig. Ό, 17. Clip according to claim 1, several curvatures are arranged continuously alternating with an offset plane and opposite opening (Fig. 9), BATH ORIQINAL 18. Clip according to claim 1, several curvatures alternating parallel one above the other are arranged (im = ο Pig. 9), 19. Clip according to claim 17, corresponding to several curvatures with an offset maii a 13esehrift- or signature width are arranged (in Fig. 9), -O. Clip according to claim 17, the curvatures corresponding to different opening dimensions of the nature of our goods (Fig. 9), 21. clip according to claim 1, I ¹ ) the ratio of the width to the length of the bracket! Your.as is one (n / l * Fig. Ib), 22. Clip according to claim 1, one leg is shorter than the other, with one leg end or both leg ends after are slightly bent on the outside (Fig. 2 and 9), 23. Clip according to claim 1, the edges of the legs are burr-free and slightly curved on the outside, primarily with a radius of curvature k Less than half the width over a radius segment of about 10 ° (1 and 3 Fig. 2, r «Fig.Ic), 2- ¹ year bracket according to claim 1, the outer Seüenkeleolcen are rounded with a radius smaller than half the width (right Fig. 2), 2 [j. Clip according to claim i, the material is hard as a springboard and corrosion-resistant, BATH ORIGINAL 26. Clip according to claim 1, the material consists of different materials in the core and in the cover layer, the Kernw.erkstoff according to claim 25 corresponds (i Fig. 4), 27. Clip according to claim 1, the inner clamping surfaces are coated to prevent slipping and are designed (J Fig. ll), 28. Clip according to claim 1, the outer surface of the clamping part for labeling is suitable (o Fig. ll), 29. Clip according to claim 1, production with composite tools (cutting, Bending, shaping) can be carried out from the strip in one operation can, 30. Clip according to claim 1, the production by composite extrusion with combined Arrangement of plastic / metal with subsequent separation to the required width takes place. The invention relates to a bracket for Holding or holding goods together or for clamping goods that are either made of one piece - For example from strip material - made or assembled integrally - made piece-like will. The bracket can be designed according to the various applications be adjusted. The innovation relates to a bracket from a Piece of sheet metal with a support and a clamping part, which are curved, profiled and resilient as a linden Area carriers, designed as legs, are. SAD ORIGINAL