DE1903083A1 - One-piece clothespins - Google Patents

Description

Heinz Hermann Weick in Geneva / Switzerland

One-piece clothespins

The invention relates to a self-resilient, one-piece clothespins that can be produced from thermoplastic material and have at least three clamping legs that are adjacent to one another in the front view of the clamp and converge with their upper ends in a grip area that is solid in the side view of the clamp, at least one of which extends in the form of an oscillation curve in the side view of the clamp and to the Forming a beak-shaped clip end has an outwardly bent end region.

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The best-known clothes peg consists of two parts braced against each other by means of a spring. These tend to become out of place, causing the bracket to break down into its component parts. Other disadvantages are inconvenient Handling, tendency to fracture legs and complicated assembly using expensive special tools.

Many attempts are known to simplify the clothes peg for the reasons mentioned above and to make it in one piece. For example, one-piece, two-legged plastic clothespins have been proposed. Your clamping properties are either too limited or too difficult to manufacture by injection molding. It is also located There is always a more or less large burr caused by the tool separation on the inner sliding surfaces the clamp legs and easily leads to damage to the laundry.

Another one-piece clothespin has three with their upper ends in one in the clip side view massive grip area converging clamp legs, the lower ends of which diverge like a beak. The clamping legs are - perpendicular to the line lead-through seen - side by side, so that the clip can be sprayed perpendicular to the line lead-through. This results in the Possibility that the lower leg area of the middle clamping leg with the lower leg areas of the outer clamping leg can overlap in the line lead-through direction. If you look at the lower beak-shaped opening area and the small bulges for the reception the leash, the two outer clamping legs have an approximately straight course. Only the middle

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right leg is - also apart from the lower beak-shaped opening area - in its reinforced, the bulges for receiving the clothesline-containing area below the grip plate slightly arched educated. The disadvantage of this clamp is insufficient clamping force and elasticity. If the clamping force were to be increased by a stronger design of the clamping legs, this would result Reduction in elasticity means overstressing of the system, which leads to paralysis or rupture even more quickly Materials. In addition, the legs spread in a V-shape in the working position of the clamp, so that the lower leg areas no longer rest against the item of laundry.

The object of the invention, which is based on a one-piece clothes peg with several clamps, is an object based on a new design to significantly increase both the elasticity and the clamping force. In addition, the aim is to ensure that the lower clamping leg areas are still run parallel to each other.

The invention consists in that the clamping legs acting against each other approximately in the upper third of their of the confluence in the grip area from measured length a bulbous, one blocked for the entry of the clothesline Channel enclosing spring zone to which one which occupies approximately the longitudinal center area of the clamping legs, another channel for receiving the clothesline enclosing the bulbous clamping zone, which on both sides towards the end of the clamp into the beak-shaped Thigh zone continues, and that through the Q.uer-

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Section dimensioning; the clamping leg in the area of the spring zone and / or an overlap of the clamping legs in the area between the spring zone and the clamping zone causes an exit the clothesline from the clamping channel into the spring zone channel is prevented.

By, this construction is given at a Clamp length reaches a greater length of at least one clamping leg, which is particularly important for the area the clamping zone for taking up the leash and the grip area applies. Accordingly, the elasticity and with correspondingly thicker dimensioning of the clamping leg cross-sections, the clamping force is also greater.

A one-piece, already known in print, three-legged clothes peg with which - seen in side view - above a bulbous clamping zone a channel-shaped grip area is located, differentiates both structurally and functionally extremely disadvantageous from the clip according to the invention. The former is bent from resilient sheet metal, whereby the grip plate is tongue-like channel-shaped. In the field of channel-shaped grip plate is neither of the two legs bulbous, instead they run parallel when the clamp is unloaded. The main disadvantage this clamp consists first of all in the fact that it can only be bent from sheet metal because of its shape. A metal bracket however, would not be accepted by the market due to their tendency to oxidize. In addition, their manufacture would be too expensive (deburring, nickel-plating, chrome-plating). The spring zone only works in the upper arch, resulting in a very high material consumption or too little clamping force and too little clamping path are conditional.

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BAD ORIGINAL 909 835/0260

In contrast, the clip according to the invention is in view developed for injection molding from thermoplastic material. She owns a massive one The grip area and the peder zone above the Klemrazone is the clamping legs below the massive grip area molded. At least one of the clamping legs is arched outwards within the peder zone, in order to achieve one with the lowest possible material consumption, even material stress and small bracket dimensions to achieve maximum clamping path with maximum clamping force.

The clip according to the invention preferably has an approximately mirror-inverted course of the one against the other acting clamp leg. As an alternative to this, it is of course also possible to have at least one leg from the grip area to the lowest arch in an approximately straight line. It is more advantageous if at least one leg runs straight from the grip area to the clamping zone in etvra and from there up to its lower end in etvra is a mirror image of the leg or legs acting in opposite directions.

A good mutual separation of the spring zone channel from the clamping zone channel can be achieved in that the opposing clamping legs are in side view cross in the area between the two channels; this results in a particularly advantageous upper one Completion of the clamping zone channel. There can also be an overlap the clamping leg above the clamping zone channel can already be achieved by the fact that on the facing Areas of mutually directed arcs of the opposing channels lying between the two channels Clamp legs overlapping projections are formed.

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Assuming that the clothes peg has three clamping legs, it is also proposed to make the middle clamping leg stronger than the two equally sized outer clamping legs, for the purpose that with the same size, measured from the clip center axis of the legs, the clamping force of the middle Klemraschenkels is approximately equal to the sum of the clamping forces of the two outer legs, ^ hen moreover, the clamping legs cross section from top to bottom leg end tapers progressively in about formed, so this results in a maximum utilization of material.

In a further embodiment of the invention it is proposed that the clamping zone channel have a larger lower one Has clamping bulge which merges into a smaller upper clamping bulge and that at the lower end of the larger clamping bulge and in the area of the transition between the larger and smaller clamping bulge Constrictions are provided, for example by on the facing surfaces of the clamping legs molded hump-like projections are formed. This design feature is independent of the others Features of the invention for all one-piece clothespins of general importance.

Tests have shown that the effect of the clamping bulges can be increased by the fact that the same longer than wide.

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It is of course possible to connect the lower ends of two clamping legs acting in the same direction to one another by means of a transverse web in a closed elongated ring.

In the drawing are exemplary embodiments of the invention shown, from which further features of the invention emerge. It shows:

Fig. 1 is a side view of a mirror-inverted, cut in the grip area Clothes pegs with cramped legs crossing each other,

FIG. 2 shows the front view according to FIG. 1,

Fig. 3 is a side view of a mirror image formed, longitudinally cut clothes pegs with clamping legs that overlap above the clamping zone,

FIG. K shows the front view according to FIG. 3,

Fig. 5 is a side view of a V / ash clamp with a mirror image of the clamp leg profile, in which the leg regions between tween the two channels approximate to the touch of their projections, and

Fig. 6 is a side view of a clothes peg in which the middle clamp leg from Grip area from to above the lower channel runs in a straight line.

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_B AD

The clip according to Figures 1 and 2 consists of the - seen in plan view - parallel Kleramschenkeln 1 and 2, the upper ends of which converge in the configured grip plate 3. The outer clamp legs 2 show the three arcs 2a adjoining one another in the form of an oscillation curve. to 2c on while the middle leg 1 has the arcs la to Ic in an approximately mirror-image arrangement. The drilling la, 2a form cfi.e Pederzone and enclose the channel 5, the arches Ib, 2b the clamping zone and enclose the channel 4 and the arches Ic, 2c the lower beak-shaped leg zone. At the point 6, i.e. between the spring zone channel 5 and the Clamping zone channel 4, the middle clamping leg 1 crosses with the outer legs 2. In the area of the lower one Arches Ic, 2c, a slight overlap of the middle leg 1 is realized over the outer legs 2. While the upper channel 5 is approximately circular, the channel 4 has an elongated shape that tapers to a point at the bottom. The clamping zone has a larger lower clamping bulge 4a, which merges into a smaller upper clerical bulge 4b. At the lower end of the larger clamping bulge 4a and constrictions are provided at the transition between the larger clamping bulge 4a and the smaller clamping bulge 4b, the hump-like projections Ie formed on the facing surfaces of the clamping legs 1, 2, If, 2e, 2f are formed.

From Fig. 1 it can also be seen that <3 is the mean Leg 1, which counteracts the two outer legs 2, is thicker than the latter is. It is thereby achieved that with equally large opening paths measured from the clamp center axis X.

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the leg the clamping force of the middle leg 1 in approximately the sum of the clamping forces of the two outer ones Leg 2 corresponds. In addition, the leg cross-sections taper from the grip plate 3 to the free leg ends Id, 2d towards the progressively decreasing stress in this direction. In this way becomes the greatest possible with the least amount of material Clamping force and elasticity achieved.

Affects the clamp thickness, i.e. the line diameter plus the thickness of the laundry hanging over it, more than 4 mm, when the clamp is put on, the line only reaches the lower clamp bulge. The narrowing of the clamping area as a result of the cams Ie, 2e provides an effective additional safeguard of the stuck laundry. If, on the other hand, the clamp thickness is less than ^ mm, the line slides when the clamp is put on as far as the upper clamping bulge ^ b. In this clamping position the cams If, 2f guarantee an additional security.

The different ones, due to the shaping according to the invention and dimensioning of the bracket achieved and The advantages shown by practical tests are easy to see. The upper arches la, 2a enlarge while maintaining small clamp dimensions the distance between the clamping zone and the grip plate 3 considerably and determine greater flexibility with increased clamping force. As a result of the middle arches Ib, 2b it is achieved, among other things, that the lower leg areas ran jamming against the laundry even with a large clamp thickness. The schank area o underneath the clamping zone do not open in a V-shape as in previously known one-piece laundry

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cling, but only achieve a parallel course with the greatest clump thickness.

In contrast to the figures, the grip plate can of course also be configured as desired be abstract. In any case, it should prevent the fingers from sliding off to the sides.

The clamp according to FIGS. 3 and k again has three clamping legs 11, 12, the upper ends of which converge in the grip plate 13. The middle leg 11 runs in a mirror image of the two outer legs 12, while the outer legs have the four arcs 12a to 12d lying one behind the other in the form of an oscillation curve, the middle leg has arcs 11a to lld running in the opposite direction. The upper arches 11a, 12a form the bulbous spring zone and enclose the channel 15, while the arches 12c, 12c form the bulbous clump zone and enclose the lower channel 14. In this, in turn, there is a lower, large clamping bulge 14a and an upper, smaller clamping bulge Ikh. At the lower end of the clamping bulge l ^ a and between the clamping bulges 14-a and l4b, constrictions formed by projections lie, Hf, l-2e, 12f are again provided. Towards the top, the Klemrazonenkanal is securely closed with respect to the spring zone channel 15 that the clamping legs 11, 12 in the area of their arcs Hb, 12b, ie at the point 16, overlap.

The middle clamping leg 11 is made thicker than the two outer legs 12. In addition

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the leg cross-section tapers from the grip plate 13 to the web ends lip ;, 12fr ,.

The constructive attenuation compared to this bracket the clip according to the first embodiment in particular that the opposing legs are in the area between the two channels 14 ·, 15 no longer cross, but only overlap. For this reason, each leg now has four instead of three arches. While the mode of action of the bracket remains the same, the structural differences result in certain advantages in toolmaking.

The clamp shown in side view according to FIG. 5 also has a three-legged design. Your front view, not shown, corresponds to the Pig. 2. The three clamping legs 21, 22 converge in the grip area 23. Both the middle limb 21 and the two outer limbs 22 each have the four beige tones 21a to 2 Id and 22a to 22d that lie one behind the other in the form of an oscillation curve. The arches of the leg 21 run in mirror image with respect to the arches of the legs 22, so that a lower channel 2k and an upper channel 25 are also formed here. The lower channel 2k enclosed by the clamping zone is separated from the upper channel 25 of the spring zone by the constriction 26. This constriction is formed by the mutually facing arcs 21b, 22b and prevents a clothesline located in the clamping zone channel from being able to exit upwards out of the channel. Compared to the two previous exemplary embodiments, both an intersection and an overlap of the legs in the area between the two channels were used.

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pulled. With this solution, the bars must have cross-sections in the area of the spring zone, however, be dimensioned so strongly that the clamp at point 26 at normal Use cannot be imposed too far.

With reference to Fig. 6 it is shown that - in brackets side view seen - a symmetrical bracket design · can be completely or partially dispensed with. With 33 is the grip area in which the two outer clamping leg 32 and the middle 'leg

Jk 31 converge. Only the two outer legs 32 run in the form of four arcs 32a to 32d which are oscillating one behind the other. The middle one is on the other hand. Leg 31 iro area 31a, ie in the length of the spring zone, initially formed in a straight line. Below the spring zone channel 35 with a circular segment-shaped cross-section, the leg 3I has arcs 31b to 31d in a mirror-image configuration to the two legs 32. The bends 31c and 32c x \ r are enclosed by the clamping zone channel * $ k , which is separated from the spring zone channel 35 by the constriction 36. This constriction is realized in particular by the inwardly directed arc 32b and prevents an escape from the clamping zone.

W nenkanal located clothesline upwards. Here, too, the leg regions 31a, 32a are again to be dimensioned relatively large.

It is easy to see that the leg 3I, in deviation from its configuration shown, can also run in a straight line from the grip area 33 to its lower arc 33d. . _BA d ORIGINAL

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While according to FIG. 6, the middle leg is designed in a straight line in its upper region and the two outer legs each have four arches, in contrast to this, the middle leg can have four bores be provided, while the two outer legs are partially can run in a straight line.

In addition, it can be sufficient to form the beak-shaped end region if, for example, only the middle one Leg or only the two outer legs is or are provided with a corresponding arch.

Furthermore, the clip can also have four clamping legs, which would have to be shaped so that a pair of Leg acts in opposite directions to the other pair of legs.

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BATH ORIGINAL

Claims (12)

Claims 1. Manufactured from thermoplastic material, even springy, one-piece clothespins with at least one three in front view of brackets next to each other, with their upper ends in a bracketed side view massive grip area converging clamp legs, of which at least one in brackets side view in the form of an oscillation curve and leads to the formation of a beak-shaped clip end has an outwardly curved end area, characterized in that the opposite acting clamping legs (1, 2; 11, 12; 21, 22; 31, 32) approximately in the upper third of their from the confluence into the grip area (3, 13, 23, 33) from the measured length a bulbous spring zone enclosing a channel (4, 14, 24, 34) blocked for the entry of the clothesline form, to which a further channel (5, 15, 25, 35) for receiving the clothesline enclosing bulbous clamping zone (la, 2a; 11a, 12a; 21a, 22a; 31a, 32a) adjoins, which in turn extends towards the end of the clamp continues into the beak-shaped kleram limb zone, and that through the cross-sectional dimensioning of the kleram limb in the Area of the ^ ederzone and / or an overlap of the clamping legs in the area between the pederzone and the Clamping zone an exit of the clothesline from the clamping channel in the direction of the pedal zone channel is prevented. -15- ORIGINAL BATHROOM 9 Π Ί η J ^r "- ^: i) ' ^? ^ Π 2. Clothes peg according to claim 1, characterized in that the counteracting Klommschenkol (1, 2; 11, 12; 21, 22) run forward roughly in mirror image in the side view of the brackets. 3. Clothes peg according to claim 1, characterized by an at least approximately straight course up to the beak-shaped clamping leg zone at least one clamping leg. ^. Clothes peg according to Claim 1, characterized in that at least one clamping leg (31) from the grip area (33) to the clamping zone in runs roughly in a straight line and from there roughly mirror-image to the clamping leg (s) that act in opposite directions (32). 5 · Clothes peg according to Claim 1 or 2, characterized in that the acting clamp legs (1, 2) in brackets side view in Cross the area between the spring zone (la, 2a) and the clamping zone (Ib, 2b). 6. Clothes peg according to one of the preceding claims, characterized in that the opposing clamping legs (1, 2; 11, 12; 21, 22; 31, 32) in the area of their lower, the beak-shaped Slightly overlap the arches forming the clamping leg zone. 7. Clothes peg according to one of the preceding claims, characterized in that the -16- 909835/0260 _BAD ORIGINAL channel (4, 14, 24, 34) enclosed by the clamping zone for Receipt of the clothesline has an elongated cross-section that is blunt at the top and pointed at the bottom. 8. Clothes peg according to one of the preceding claims, in the version with three clamping legs, characterized characterized in that the middle clamping leg (1, 11) is made stronger than one the equally large outer clamping legs (2, 12) to the extent that with the same size, from the clamp center axis the clamping force from measured opening paths of the legs of the middle clamping leg corresponds approximately to the sum of the clamping forces of the two outer clamping legs. 9 · Clothes peg according to one of the preceding claims, characterized in that the clamp leg cross-section from the upper to the lower clamp leg end in etvra. progressively tapered. 10. Clothes peg in particular according to one of the preceding claims, characterized in that that within the channel (4, 14, 24, 34) enclosed by the clamping zone, at least one, for example clamping bulge (4a, 4b; 14a, 14b) formed by molded-on hump-like projections is provided. 11. Clothes peg according to one of the preceding claims, characterized in that in the ■ channel (4, 14, 24, 34) enclosed by the clamping zone, a larger lower clamping bulge (4a, 14a) is provided, which is in a smaller upper clamping bulge (4b , 14b) passes over, and that at the lower end of the larger terminal -17- 909835/0260 BATH ORIGINAL - 17 - buchtunjr and in the area of the transition between the larger ones and the smaller clamping bulge constrictions are provided, for example by molded knuckle-like Projections (If, 2f; He, 12e) are formed. 12. Clothes peg according to claim 11, characterized in that the clamping bulges (4a, ^ b; l ^ a, l ^ b) are formed longer than wide. BATH 909835/0260