EP0520124B1

EP0520124B1 - Turning-rocking button for clothing

Info

Publication number: EP0520124B1
Application number: EP91830286A
Authority: EP
Inventors: Riccardo Candotti
Original assignee: Cobra SRL
Current assignee: Cobra SRL
Priority date: 1991-06-26
Filing date: 1991-06-26
Publication date: 1996-05-29
Anticipated expiration: 2011-06-26
Also published as: ATE138538T1; DE69119895D1; DE69119895T2; EP0520124A1

Abstract

A mobile articulated head is employed on a knuckle having a mushroom shape, consisting of a roof (1) retaining a step cavity (5) in a retractable bending border, with an interposed tablet (2) in central collation seat (3) of the mushroom (4). The cavity (5) has a lower cylindrical form with collar (8), within the which the mushroom stem (9) can slide. The head components, the preliminary body (10) for the mushroom formation, as well as the spinned nail (12) and its base (13) can be obtained by means of pressing. A weakening treatment on an intermediate band of the preliminary body (10) and rolling give rise to an initial expansion of the same body upper part. The four components are riveted which compose the mobile part and the mushroom, while the nail (12) is assembled to its base (13). The preliminary body is further expanded on its head, thus determining the cap (4) of the mushroom and the inside nail crushing chamber. To the mobile part, three movements are allowed: a swinging one on the head (4), a turning motion around its stem (9) and a transfer movement between the counterposed beating crowns, i.e. the one of the hat (7) and the other (11) for the stem stabilization on the tissue. <IMAGE>

Description

The invention refers to a button having a mobile articulated head which provides a reduction and compacting of the outside encumbering parts and particularly a joint which allows the automatic fitting of the button with the conventional equipment. Moreover a working simplification is possibile becuase a joint assembly with only four parts is performed.
The invented button ensures resistance against the acids which are present in the colouring and fading treatment of the dress units on which such buttons usually are fitted. A shaping of the fixing foot and of the head of the stud to rivet is foreseen which gives rise to a solidarily working condition of binding to the cloth engaging it within a wide anchoring perimeter. This increases the resistance to rents. The selfdrilling action by means of insertion of the nail within the cloth is thus granted as well as the elastic fixation through one or more layers of cloth. This enables to suit manufacturing and to avoid the necessity of preliminary drilling the cloth and weakening it due to the cloth break. Moreover, the invented button facilitates buttoning by means of a slant angle between 30° and 40° as well as a ready and regular rocking of the head on the fixed foot. The turning-rocking buttons are currently used particularly in the sector of jeans and casual and, in the case of rough, rather stiff and thick cloth, they allow an easy buttoning. Buttons are known as for instance the button described and shown in the US-A- 1 821 616 according to which a flexible type button is taught having the features of the preamble of claim 1. Other buttons are known according to the prior art in particular a button manufactured in Germany consists of a head with stem bearing an articulation body within the groove of the fixed foot. The use of said button requires a large working space and a particular centering precision for the button setting. Another button, also this manufactured in Germany, requires a large bore in the cloth and requires a wide leaning base. Its laying is then allowed by an eyelet which is opening against a shaped tablet which assures the seal on the cloth. A third button, produced in Italy, requires a wide laying base with tie determined by a spring which penetrates into counterposed riveting tongs of the fixed foot and shows an articulated head on an articulated body borne by the stem.
These current buttons with mobile foot are not to be fitted by means of automatic machines and with the conventional punches owing to the projections of the stem of the fixed foot. Consequently, these buttons are to be fitted merely by means of preliminary and difficult centering and subsequent hand-operated riveting phase. The invention concerns a button comprising a stud preferably without projections on the stem. This permits an encumbering compatible with the one foreseen by the current machines for buttons with fixed stem. The button comprises a mobile articulated head on a mushroom-shaped stud to be fitted by inserting and deforming a conventional nail inserted into the interposed cloth. The mobile head consists of a body portion defining a stepped cavity with interposed an insert having a central recess having a shape corresponding to that of the head of the stud. This permits an easy rotation and, in the button fitting, to act as a support for nail riveting. The lower part of the stepped cavity may have a cylindrical shape and has an opening defined by a collar into which the stem of the stud slides. Said collar, which may be obtained by riveting, increases the retention effect. The mobile head is assembled to have preferably three movements: one of rocking on the mushroom-shaped stud, one of rotation around the stem of the stud and one of translation along the stem of the stud. The cover portion, the insert, the body portion, the stud and the nail may be obtained by forming from metal bands. Before assembling a weakening is actuated on the intermediate part of the stem of the stud then a rolling is carried out on the stem with the same stem already introduced into the collar, said rolling bringing the higher part of the stud in initial expansion by riveting on the semi-finished body. The head of the button is then assembled while another machine assembles the two parts of the nail.
The button is fitted by conventional automatic feed punch. The nail stem is inserted into the cloth, penetrates into the stem of the stud and, through the effect of the insert, is deformed into the cavity of the mushroom-shape head and riveted on the collar. In this way is actuated the solidary constraint of the button on the cloth for cloth containment between the nail cover portion preferably comprising an annular border and the mushroom-shaped stud base preferably provided with a retention shape. Preferred embodiment of the button and its assembling is illustrated in the drawings of sheets 1 and 2. Fig. 1 is sectional detached view, with axial disposition, of the body button parts over the cloth and, under the cloth, of the nail stem portion and of the nail cover portion.
Fig. 2 is sectional view of the same parts showing the mushroom-shaped stud already assembled and the nail already assembled. In sheet 2 fig. 3 is half-sectional front view of the button with the mobile head at the upper limit. Fig. 4 is half-setional view of the assembly as attached. Fig. 5 is half-sectional view with the mobile head resting on the stud base. Fig. 6 is sectional view of the mobile head during its rocking. In an embodiment the body portion consists of a cover portion 1, and insert 2 with central recess 3 having a shape corresponding to that of the head 4 of the stud and a stepped cavity 5 with cylindrical part 6, lower crown 7 and collar 8. In this collar 8 the stem 9 of the stud is sliding. Said stud formed by preliminary body 10 with retention base 11. The nail consists of a nail stem portion 12 and a nail cover portion 13. Before assembling a weakening operation is carried out on the preliminary body 10 already inserted into the stepped cavity 5 so bringing the ending part of the body 10 in initial expansion.
Riveting is then carried out which forms the mushroom-shaped head 4. Said head 4 to be foreseen with a cavity 14 and a collar 15. The cover portion 1 and the stepped cavity 5 are then assembled with interposed the insert 2 so forming the mobile head articulated on the mushroom-shaped head 4. Also the nail stem portion 12 and the nail cover portion 13 are assembled to form the nail. The button is assembled to the cloth by riveting: the nail stem portion 12 is inserted onto the interposed cloth 16, penetrates into the recess 17 of the stud and it is squeezed into the cavity 14 so deforming in the mushroom-shaped head. The stable seating is achieved by the containment of the cloth 16 between the border 18 of the nail cover on the base 19 of the nail stem 12 and the retention shape 11 of the mushroom-shaped stud. Different materials can be used such as iron, brass, steel, duralumin or others.

Claims

Turning-rocking button for clothing, having a mobile articulated head on a mushroom-shaped stud, the mobile head consisting of a body portion defining a stepped cavity (5) and an opening defined by a collar (8), an insert (2) being positioned in the cavity and interposed between the step and a cover portion (1) which is bent over the edge of the body portion, the stem (9) of the stud being a sliding fit in the opening of the collar and the head of the stud being located in the cavity between the insert (2) and the collar (8), the stud being mountable on the clothing by means of a nail comprising a nail stem portion (12) serving to pierce the clothing; characterized in that:
- the insert (2) has on a surface directed away from the cover portion (1) a central recess (3) having a shape corresponding to that of the head of the stud;

- the nail also comprises a nail cover portion (13) the nail cover portion being assembled onto the nail stem portion (12); and

- the mobile head and the stud are able to be assembled from preformed pressed pieces including a stud preform having no mushroom-shaped head and with the stem weakened at an intermediate portion, by passing the stud through the opening and forming the mushroom-shaped head by riveting, assembling the cover and insert to the body portion and inserting the nail through cloth (16) and into the stud, the recess of the insert serving as a support during insertion of the nail into the stud to deform the nail in the mushroom-shaped head.
Turning-rocking button for clothing, according to claim 1), in that the mobile head is assembled to have three movements: one rocking on the mushroom-shaped stud, one rotated around the stem (9) of the stud and one translated along the stem of the stud.
Method of fitting the button according to claim 1), in that the button is fitted by an automatic feed punch, the nail stem portion (12) is inserted through cloth (16), penetrates into the recess (17) of the stem (9) of the stud and, through the effect of the insert (2), it is deformed into the cavity (14) of the mushroom-shaped head (4) and riveted on the collar (15), thereby retaining the cloth between the nail cover portion (13) preferably provided with an annular border and the mushroom-shaped stud base preferably provided with a retention shape (11).