EP1304942B1 - Button for sewing onto textile materials - Google Patents

Abstract

The invention relates to a button for sewing onto textile materials in particular, such as items of clothing. Said button has at least two holes (3) for the sewing thread and is specially configured in such a way that the thread end that is formed during the sewing-on process, when the sewing thread is cut, is embedded in the thread bundle between the holes (3) and secured so that the thread end no longer protrudes and cannot cause the button to work itself loose and drop off. The inventive button can be produced in many different external shapes and functional variants. In each case, a receiving channel (8) which is provided between the holes (3) and which is open in the direction of the top surface of the button (1) ensures that the thread end is secured.

Description

TECHNICAL AREA

The invention relates to a sewing for particular textile materials, such as garments, certain knob with at least two from the top to the bottom of the knob through openings for the suture thread, between which formed an open towards the top receiving channel for the suture in the button is like this example CH-A 262 869 is known.

STATE OF THE ART

Buttons are machine-sewn in the textile industry, wherein the button is anchored by means of Knopfannähmaschine on the underside of the textile material only by a Kettstichverschlingung. After sewing, the sewing thread is tightened and torn off by lifting the button clip in the knot. It may happen that the end thread protrudes due to insufficient knotting the warp stitch or by stitching outward. Pulling on this protruding thread end, the Kettstichverschlingung dissolves slightly again, until the button is released and falls off. An additional or subsequent wrapping of the thread bundle formed during sewing between the button bottom and the top of the textile material from the suture is also done using the Kettstichs and can only inadequately eliminate the problem described, depending on whether the wrap and knot the neck close or looser he follows.

There has been no lack of attempts to develop methods and sewing threads, with the help sewed buttons to be protected against falling. But these known methods set usually preceded by the buttons are sewn to form a button handle, which is carried out only in certain cases.

For example, it has already been proposed ( DE 28 43 589 A1 ), the button handle of sewed using a commercially available Knopfannähmaschine and a commercial Nähzwirns button under train with a thread to wrap the winding after addition of a solvent for swelling and after the evaporation is brought into contraction for bonding, so that the button stem with a homogeneous Sleeve is firmly enclosed. Although this results in a durable button handle and a secure setting of the thread end, but the application of a solvent is complicated to handle and problematic in terms of environmental conditions at the workplace of the workforce.

In another known method ( DE 39 27 018 C1 ), which in turn is intended only for gestielt sutured buttons, a Stielumwicklungsfaden is used from an elastomeric plastic, which is deducted after wrapping the stems forming filament bundle of the button stem in approximately vertical direction to the axis with an increased tensile strength beyond its yield point before being severed at the button handle. Due to the stretching of the wrapping thread occurring in this case reduces its diameter, so that the thread end can penetrate between previously defined turns of the stem wrap, there embeds and firmly clamped after entering the severing of the tensile force during cutting.

All known methods have in common that the solution of the problem described by special procedural measures and / or by special sewing threads is sought.

In a known button ( CH 262 869 ) of the type indicated above is provided to avoid chafing of a twine there called button stem on the rough edges of a buttonhole that a button above the disc projecting eye covers and sewn by a buttonhole button the thread on all sides against the buttonhole edges. Measures to avoid unintentional loosening and dropping of the button due to a protruding thread end are not met in this known button.

On the other hand, the object of the present invention is to design a button so that no free end of the thread projects beyond the sewing process.

PRESENTATION OF THE INVENTION

This object is achieved by the features specified in claim 1. Advantageous developments and embodiments will become apparent from the dependent claims and are also described in more detail below.

Based on the above-mentioned button is provided according to the claim 1, that is formed between the two passage openings in the button, open towards the top receiving channel for the suture for holding the thread end. According to the basic idea of the present invention, the thread bundle formed during the sewing of the button fills the receiving channel in such a way that the thread end embeds firmly in the thread bundle in the receiving channel. This requires neither a special button sewing method nor a special sewing thread. Rather, the usual Knopfannähmaschinen and the usual sewing threads can be used. Of course, such trained Buttons can also be sewn by hand. The problem underlying the invention is achieved exclusively by a special design of the button.

In pursuit of the inventive concept, the receiving channel according to claim 2 has a cross section formed from two differently shaped regions, consisting of a funnel-shaped widening to the top insertion area for the sewing thread and a receiving area for the formed from the suture, the button fastened thread bundle. The funnel-shaped insertion area ensures that the sewing thread is guided into the receiving area. This feature all have described embodiments and variants of the button.

Preferably, the receiving area according to claim 3 has a substantially circular cross-section, which is connected via a passage gap for the sewing thread with the lead-in area. In this way, the thread bundle created during sewing experiences a correspondingly structured cross-sectional shape in the receiving region of the receiving channel. In this case, the relatively narrow passage gap ensures that the receiving area is undercut and the Securely holds the bundle of fibers including the embedded thread end.

The insertion region of the receiving channel is preferably limited to optimize its thread guiding properties according to claim 4 of two mutually arranged at an acute angle guide surfaces which form the passage gap at the point of their smallest mutual distance with parallel aligned edges. The guide surfaces converging towards each other in the direction of the receiving space guide the sewing thread during the sewing process to the passage gap and through it into the receiving region.

The passage gap expediently has a clear width, which corresponds approximately to the simple to about three times the Nähfadendurchmessers, as stated in claim 5. Here, the gap should correspond to a needle to be sewn on knob about three times the thread diameter, while not sewn on the handle buttons, the gap should correspond approximately to the thread diameter.

For many applications, it is sufficient and expedient if the receiving channel extends in a straight line between the two lead-through openings, as indicated in claim 6.

An additional clamping of the filament bundle formed during sewing, including the thread end results when, according to claim 7, the receiving channel extends with a plurality of changes in direction in a zig-zag course between the two lead-through openings. It is advantageous if according to claim 8, the lead-in area of the receiving channel of the number of changes in direction accordingly is bounded by pairs of opposing triangular guide surfaces, each of the guide surface pair widens funnel-shaped towards the top, and when the receiving area for the thread bundle formed from the suture from pairs oppositely arranged parallel wall surfaces, the upper edge of each with the base edge of the associated triangular Guide surface coincides.

In a particular embodiment specified in claim 9, the knob is made of an elastomeric material having a Shore hardness between about 60 and about 70, wherein starting from the bottom between the two passage openings in the region of the receiving channel and before this endend a wall thickness-reducing cavity is formed , This cavity allows due to the suture tension during sewing an elastic deformation of the central portion of the rubber-elastic button, whereby the clamping and holding action on the thread end in the receiving channel is still increased, in particular it may be a constriction of the passage gap.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1

die Draufsicht auf einen Knopf,

Fig. 2

die Unteransicht des Knopfes gemäß Fig. 1,

Fig. 3

die Seitenansicht des Knopfes gemäß den Figuren 1 und 2 in Blickrichtung des Pfeils III in Fig. 1 gesehen,

Fig. 4

die Seitenansicht des Knopfes gemäß den Figuren 1 bis 3 in Blickrichtung des Pfeils IV in Fig. 1 gesehen,

Fig. 5

die Schnittansicht des Knopfes entsprechend der Schnittverlaufslinie V-V in Fig. 1,

Fig. 6

die Draufsicht auf einen Knopf in einer Ausbildungsvariante,

Fig. 7

die Seitenansicht des Knopfes gemäß Fig. 6 in Blickrichtung des Pfeils VII in Fig. 6 gesehen,

Fig. 8

die Schnittansicht des Knopfes entsprechend der Schnittverlaufslinie VIII-VIII in Fig. 6,

Fig. 9

die Schnittansicht des Knopfes entsprechend der Schnittverlaufslinie IX-IX in Fig. 6,

Fig. 10

die Draufsicht auf einen Knopf in einer weiteren Ausbildungsvariante,

Fig. 11

die Seitenansicht des Knopfes gemäß Fig.10 in Blickrichtung des Pfeils XI in Fig. 10 gesehen,

Fig. 12

die Schnittansicht des Knopfes entsprechend der Schnittverlaufslinie XII-XII in Fig. 10,

Fig. 13

die Schnittansicht des Knopfes entsprechend der Schnittverlaufslinie XIII-XIII in Fig. 10,

Fig. 14

die Draufsicht auf einen Knopf in einer anderen Ausführungsform,

Fig. 15

die Unteransicht des Knopfes gemäß Fig. 14,

Fig. 16

die Seitenansicht des Knopfes gemäß den Figuren 14 und 15 in Blickrichtung des Pfeils XVI in Fig. 14 gesehen,

Fig. 17

die Seitenansicht des Knopfes gemäß den Figuren 14 bis 16 in Blickrichtung des Pfeils XVII in Fig. 14 gesehen und

Fig. 18

die Schnittansicht des Knopfes entsprechend der Schnittverlaufslinie XVIII-XVIII in Fig. 14.

Further details of the invention will be explained below with reference to the different embodiments and variants in an enlarged scale relative to the reality performing drawings. It shows:

Fig. 1

the top view of a button,

Fig. 2

the bottom view of the button according to Fig. 1 .

Fig. 3

the side view of the button according to the FIGS. 1 and 2 in the direction of arrow III in Fig. 1 seen,

Fig. 4

the side view of the button according to the FIGS. 1 to 3 in the direction of arrow IV in Fig. 1 seen,

Fig. 5

the sectional view of the button according to the section line VV in Fig. 1 .

Fig. 6

the top view of a button in a training variant,

Fig. 7

the side view of the button according to Fig. 6 in the direction of arrow VII in Fig. 6 seen,

Fig. 8

the sectional view of the button according to the section line VIII-VIII in Fig. 6 .

Fig. 9

the sectional view of the button according to the section line IX-IX in Fig. 6 .

Fig. 10

the top view of a button in another embodiment variant,

Fig. 11

the side view of the button according to Figure 10 in the direction of arrow XI in Fig. 10 seen,

Fig. 12

the sectional view of the button according to the section line XII-XII in Fig. 10 .

Fig. 13

the sectional view of the button according to the section line XIII-XIII in Fig. 10 .

Fig. 14

the top view of a button in another embodiment,

Fig. 15

the bottom view of the button according to Fig. 14 .

Fig. 16

the side view of the button according to the Figures 14 and 15 in the direction of arrow XVI in Fig. 14 seen,

Fig. 17

the side view of the button according to the FIGS. 14 to 16 in the direction of arrow XVII in Fig. 14 seen and

Fig. 18

the sectional view of the button according to the section line XVIII-XVIII in Fig. 14 ,

DETAILED DESCRIPTION OF EMBODIMENTS

In the drawings, two embodiments of a button according to the invention are shown, of which the FIGS. 1 to 5 a first embodiment and the FIGS. 14 to 18 relate to a second embodiment, while the FIGS. 6 to 9 on the one hand and the FIGS. 10 to 13 on the other hand represent variants of the first embodiment. In the following description is first on the FIGS. 1 to 5 Referenced.

The apparent therefrom button has two from its top 1 to its bottom 2 continuous, in cross-section circular area through openings 3 for the sewing thread (the latter is not shown in all figures). The top 1 of the button is in an outer planar annular surface 4 and one of the plane of the annular surface 4 after articulated above dome-shaped central elevation 5. On its underside 2, the button is provided with a planar central surface 6 which is plane-parallel to the annular surface 4 and adjoins, on the outside, an edge region 7 which produces the beveled / rounded transition to the annular surface 4 on the upper side 1.

There is a receiving channel 8, which connects the two through-openings 3 with each other, and is passed through the dome-shaped central elevation 5 without interruption, between the two through-openings 3. The receiving channel 8 has a cross section formed from two differently shaped areas, as best of Fig. 3 is apparent. This consists of a funnel-shaped widening towards the top 1 introduction region 9 for the sewing thread and a holding the thread end in the finished bundle of fibers causing receiving area 10th

The introduction region 9 is delimited by two guide surfaces 11 which are arranged at an acute angle to one another and guide the sewing thread to and into the receiving region 10 during the button sewing process. The receiving region 10 has a substantially circular cross-section and is connected to the insertion region 9 via a passage gap 12 for the sewing thread. The guide surfaces 11 form at the point of their smallest mutual distance with mutually parallel edges 13 the passage gap 12. Its clear width can be about the simple to about three times the Nähfadendurchmessers, depending on button education and Knopfanbringungsart. As can be seen in particular from FIGS. 1 and 2, the receiving channel 8 extends in a straight line between the two lead-through openings 3.

If the previously described button is made of an elastomeric material, for example rubber having a Shore hardness between about 60 and about 70, i. E. has a certain elastic deformability, it makes sense, starting from its bottom 2 in the middle of the central surface 6, between the two passage openings 3 and in the region of the receiving channel 8 and before this form a cavity 14 einzuformen. This cavity 14 reduces the wall thickness between the two lead-through openings 3 and also to the receiving channel 8 out so that elastic deformations occur during button sewing due to the tensile force transmitted by the thread tension in the region of reduced wall thicknesses, which additionally bundle the thread bundle and thus the thread end in the receiving area 10 of the receiving channel 8 pinch. In this case, the edges 13 of the passage gap 12 are moved towards each other in the sense of a gap width reduction.

The in the FIGS. 6 to 9 button shown has a relative to the button according to the FIGS. 1 to 5 deviating shape, but equally has all inventions essential to education. For corresponding areas and geometric structures, therefore, the same reference numerals as in the FIGS. 1 to 5 used. However, the receiving channel 8 is not in this button variant on the top 1 of the button, but approximately between the top 1 and its bottom 2.

In this variant, a recessed flat circular surface 15 is provided on the upper side 1 of the knob, which is surrounded by an annular projection 16. The underside 2 is shaped overall approximately in the manner of a flat spherical section. The introduction region 9 of the receiving channel 8 begins with its guide surfaces 11 on the circular surface 15. The same applies to the passage openings 3. Like Fig. 8 to can be seen, the button has in alignment with the receiving portion 10 of the receiving channel 8 corresponding holes 17, each extending between a passage opening 3 and the spherical segment-shaped surface of the bottom 2. These holes 17 are auxiliary holes, which allow the production / shaping / demolding of the undercut receiving portion 10 of the receiving channel 8.

The in the FIGS. 10 to 13 shown variant of the button is in turn deviating relative to the buttons corresponding to the groups of figures 1 to 5 and 6 to 9, but also has all inventions essential to training. Therefore, the same reference numbers are used for corresponding areas and geometric structures of this button variant as before. The receiving channel 8 is located in this button variant neither on the top 1 nor between the top 1 and bottom 2 of the button, but essentially, ie with its receiving area 10, on the bottom of the second

Also in this variant, a recessed flat circular surface 15 is present at the top 1 of the button, which is surrounded by an annular projection 16. The underside 2 is also designed spherical section in its outer region, but has a protruding from the spherical section surface central pin 18. The relatively longer in this variant insertion region 9 of the receiving channel 8 begins with its guide surfaces 11 on the circular surface 15 and ends with its the passage gap 12th defining edges 13 approximately where the central pin begins. The passage openings 3 start at the circular surface 15 and terminate at the spherical segment-shaped surface at the bottom 2.

The receiving portion 10 of the receiving channel 8 is located as a transverse recess exclusively in the central pin 18, of the Receiving area 10 is completely penetrated, so that it is exposed to both sides. Due to this configuration of the button variant, the thread bundle is formed in the button sewing process practically below the passage openings 3 and detects only the central pin 18th

The in the FIGS. 14 to 18 shown second embodiment of the button corresponds in the outer button design of those with reference to the FIGS. 1 to 5 However, the receiving channel 8 'is not straight between the two passage openings 3, but extends with a plurality of changes in direction in a zig-zag course between the two passage openings 3, as will be described in more detail below.

In particular Fig. 14 illustrates, the receiving area 10 'is designed for the thread bundle formed during Knopfannähvorgang in the manner of a zig-zag path with 90 ° direction changes, wherein the beginning and end of the zig-zag path with respect to the lead-through openings 3 approximately tangential in the zigzag Lead way or are led out of it. In this embodiment, the receiving region 10 'is not undercut relative to the insertion region 9', but is delimited by wall surfaces 19 arranged in pairs opposite one another. These wall surfaces 19 each end at the same height at an upper edge 20. The upper edge 20 is in each case identical to the base edge of an associated triangular guide surface 11 '. For each pair of opposite wall surfaces 19 therefore includes a pair of opposite guide surfaces 11 '. The guide surface pairs together form the insertion region 9 'of the receiving channel 8'. The guide surfaces 11 'of each guide surface pair widen, as described above for the first embodiment and its variants, in a funnel shape and are arranged at an acute angle to each other. When button sewing Feed the sewing thread into the zigzag receiving area 10 '. In this case, the end thread is firmly embedded in the thread bundle and undergoes an additional fixation imposed by the thread shape through the shaping of the receiving area 10 'imposed directional change.

Also in this embodiment, a wall thickness-reducing cavity 14 may be provided, as in Fig. 18 is indicated, which causes in a knob made of a rubber-elastic material similar thread clamping effects, as with reference to the first embodiment of the FIGS. 1 to 5 has been described.

It is proposed for sewing on particular textile materials, such as garments, certain knob with at least two lead-through openings for the sewing thread, which is due to its special training, the thread end formed during sewing and cutting of the suture so in the thread bundle between the Embed passages and note that the thread end does not protrude and therefore can not cause unwanted loosening and falling of the button. The button according to the invention can be produced in many outer shapes and functional variants, wherein each one provided between the lead-through openings to the button top open receiving channel causes the holding of the thread end.

Claims (9)

1. Button intended for sewing in particular to textile materials such as garments, with at least two passage openings for the sewing thread passing from the top (1) to the bottom (2) of the button, between which is formed in the button a receiver channel (8, 8') for the sewing thread which is open to the top (1) and extending uninterrupted connects the two passage openings (3) together, characterised in that the receiver channel (8, 8') is formed to hold the thread firmly such that the thread end is embedded in the receiving channel (8, 8'), firmly held in the thread bundle formed when sewing on the button.
2. Button according to claim 1, characterised in that the receiver channel (8, 8') has a cross-section formed from two areas (9, 9'; 10, 10') of different shapes, comprising an insertion area (9, 9') for the sewing thread expanding funnel-like towards the top (1), and a receiving area (10, 10') for the thread bundle formed from the sewing thread and fixing the button.
3. Button according to claim 2, characterised in that the receiving area (10) has a substantially circular cross-section which is connected with the insertion area (9) via a passage gap (12) for the sewing thread.
4. Button according to claims 2 and 3, characterised in that the insertion area (9) is limited by two guide surfaces (11) arranged at an acute angle to each other, which at the point of their smallest mutual distance form the passage gap (12) with edges (13) aligned parallel to each other.
5. Button according to claim 3 or 4, characterised in that the passage gap (12) has a clear width which corresponds to around once to around three times the diameter of the sewing thread.
6. Button according to one of claims 1 to 5, characterised in that the receiver channel (8) runs in a straight line between the two passage openings (3).
7. Button according to one of claims 1 or 2, characterised in that the receiver channel (8') extends with several direction changes in a zigzag pattern between the two passage openings (3).
8. Button according to claims 2 and 7, characterised in that the insertion area (9') of the receiver channel (8') is limited, depending on number of direction changes, by triangular guide surfaces (11') lying opposite each other in pairs, every guide surface pair of which expands funnel-like towards the top (1), and that the receiver area (10') for the thread bundle formed by the sewing thread is formed from pairs of opposing wall surfaces (19) arranged parallel to each other, the upper edges (20) of which each coincide with the base edge of the associated triangular guide surface (11').
9. Button according to any of the preceding claims, characterised in that it is made from an elastomer material with a Shore hardness between around 60 and around 70, and that starting from the underside (2), between the two passage openings (3) in the area of the receiver channel (8, 8') and ending in front of this, is formed a cavity (14) which reduces the wall thickness.

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