UNION BUTTON

Abstract

A tack button for joining textile garments comprising: - a counterpiece (1) comprising: a first base (2), and a receiving body (3) extending perpendicularly with respect to the first base (2) and incorporating an axial internal channel (4) and an opening (5) communicating with the internal channel (4), - a fastening piece (6) attachable to the counterpiece (1) comprising: a second base (7), and an insertion body (8) extending perpendicularly with respect to said second base (7), wherein the insertion body (8) is inserted into the internal channel (4) of the receiving body (3) through the opening (5) in the joining position, and characterized in that the insertion body (8) has: - a first section (11) extending from the second base (7), which is cylindrical and whose diameter is smaller than the inner diameter of the opening (5), - a second section (9) extending from the first section (11), which is spherical and whose diameter is larger that the inner diameter of the mouthpiece (5), and is intended to be inserted into the internal channel (4) of the receiving body (3), and because the counterpiece (1) comprises: - at least one cavity (10) located in the internal channel (4) extending internally from the mouthpiece (5) of said receiving body (3), which is spherical and of a diameter equal to or greater than the diameter of the second section (9) of the insertion body (8), wherein the mouthpiece (5) and the cavity (10) are elastic and are intended to deform to allow the passage of the second section (9) into the cavity (10).

Description

JOINING TACK BUTTON OBJECT OF THE INVENTION The object of the present invention relates to the technical field of the textile industry, specifically to elements for fastening textile garments where a joining tack button is provided with a counterpiece and a fixing piece that can be attached to each other, retaining a textile garment between them. The present invention relates to the incorporation of a spherical section in the fixing piece, and to the incorporation of a spherical and elastic cavity and an elastic mouthpiece in the counterpiece, facilitating the coupling between the counterpiece and the fixing piece and allowing its decoupling. BACKGROUND OF THE INVENTION In the textile industry, buttons are widely used fasteners, for example, on garments requiring high-strength attachments. These buttons are typically made from various materials, including metal, wood, mother-of-pearl, ceramic, resin, and, more recently, plastic. Generally, buttons consist of two parts: a counterpiece and a connecting piece, which fit together to hold the garment in place. Buttons fasten a garment and are designed to be inserted through a longitudinal opening sewn into the garment. The button is then inserted into the opening to create the closure. On the other hand, there are buttons that are made up of two pieces, also called tacks, these pieces being: the receiving piece or counterpiece and the insertion piece or fixing piece, whose union allows the agile and simple fastening of two portions of a textile garment. Most of these buttons are made of metal and are installed by pressing them into place. They have several distinct parts, such as protrusions, grooves, and internal channels, which allow for a permanent connection between the two parts when pressure is applied. However, these buttons present the problem that once attached, the button must be broken to detach it. This results in cost and material waste, for example, if an error occurs during installation. Furthermore, these buttons are not reusable when the garment is recycled due to the aforementioned problem of separating the pieces. Therefore, new buttons must be attached to each garment, thus reducing the lifespan of the buttons or tacks. Additionally, the garment is difficult to repair once a button is damaged, as it cannot be replaced. DESCRIPTION OF THE INVENTION The present invention relates to a fastener and a counterpiece that fit together, wherein the fastener has an insertion body and the counterpiece has an elastic opening and cavity that deform upon the passage of the insertion body. This achieves a reversible coupling, whereby the fastener and counterpiece are coupled and can be decoupled for replacement or reuse. Specifically, the connecting tack button comprises the counterpiece formed by a first base, which may be circular in shape; and a receiving body that extends perpendicularly from said first base. The receiving body is provided with an axial internal channel and an elastic opening that communicates with said internal channel, where the internal channel comprises a spherical cavity and the inner diameter of the opening is smaller than the diameter of the cavity. The button also includes a fastening piece that attaches to the counterpiece. This fastening piece has a second base and an insertion body, which extends perpendicularly to the second base. The insertion body comprises a first cylindrical section and a second spherical section extending from the first section. The insertion body is inserted into the internal channel of the receiving body to secure the fastening piece and the counterpiece. This second section has a diameter equal to or smaller than the diameter of the cavity and a diameter larger than the inner diameter of the opening, so that once the second section is inserted into the receiving body, it rests within the cavity and is retained by the cavity and the opening. Furthermore, the fixing piece is made of a rigid material, while the mouthpiece and internal channel are made of an elastic material. Therefore, when the insertion body is inserted into the internal channel, the mouthpiece and cavity open elastically to allow the passage of the second section into the cavity. Specifically, the second section increases the internal diameter of the mouthpiece and displaces the walls of the cavity to allow its passage. Once the second section is inserted into the cavity, the mouthpiece and cavity elastically retain the second section inserted into the receiving body. Therefore, the tack button provides a firm retention under normal mechanical stress, while also being reversible through the application of a deliberate pulling or separating force. This force causes a temporary elastic deformation of the cavity and socket, allowing for the complete removal of both parts without permanent deformation for subsequent reuse. Thus, the button remains attached during use but allows for its reuse or replacement. Optionally, the fastening piece may include a third conical section extending from the second section, which facilitates the orientation of the insert body relative to the opening. This third section can be used to locate the opening and also allows for piercing the fabric to prevent the button from slipping. Thus, the fastening piece receives force when the third section is positioned at the opening, piercing the fabric and ensuring that the second section presses against the opening, causing it to deform elastically. The internal channel may include a recess extending from the cavity, which can accommodate the third section of the insert body in the joining position, allowing the second section to rest within the cavity. This recess may have a geometry corresponding to the geometry of the third section, where the third section rests within the recess in the joining position, creating a coupling that prevents the joining piece from rocking relative to the counterpiece. DESCRIPTION OF THE DRAWINGS To complement the description being made and in order to help a better understanding of the characteristics of the invention, according to a preferred embodiment thereof, a set of drawings is included as an integral part of said description, in which, for illustrative and non-limiting purposes, the following has been represented: Figure 1.- Shows an exploded view of the joining tack button according to a first embodiment. Figure 2.- Shows a first top view of the joining tack button of the first embodiment. Figure 3.- Shows a first perspective view of the joining tack button in the joining position of the first embodiment. Figure 4.- Shows a side sectional view of the joining tack button in the joining position of the first embodiment. Figure 5.- Shows an exploded view of the joining tack button according to a second embodiment. Figure 6.- Shows a first top view of the joining tack button of the second embodiment. Figure 7.- Shows a side sectional view of the joining tack button in the joining position of the second embodiment. PREFERRED EMBODIMENT OF THE INVENTION The following describes a preferred embodiment of a tack button, which is the subject of this invention. The tack button for attaching to textile garments, according to the preferred embodiment, incorporates a counterpiece (1) and a fastening piece (6). The counterpiece (1) comprises a first base (2) and a receiving body (3) extending perpendicularly from the first base (2) and incorporating an axial internal channel (4) and an opening (5) that communicates with the internal channel (4). The fastening piece (6) attachable to the counterpiece (1) comprises a second base (7) and an insertion body (8) extending perpendicularly from the second base (7), wherein the insertion body (8) is inserted into the internal channel (4) of the receiving body (3) through the opening (5) in the attached position. On one hand, the insertion body (8) has: a first section (11) extending from the second base (7), which is cylindrical and has a diameter smaller than the inner diameter of the mouthpiece (5), and a second section (9) extending from the first section (11), which is spherical and has a diameter larger than the inner diameter of the mouthpiece (5), and is intended to be inserted into the internal channel (4) of the receiving body (3). On the other hand, the counterpiece (1) comprises at least one cavity (10) located in the internal channel (4) extending from the mouthpiece (5) of said receiving body (3), which is spherical and has a diameter equal to or greater than the diameter of the second section (9) of the insertion body (8), where the cavity (10) and the mouthpiece (5) are elastic and are intended to deform to allow the passage of the second section (9) into the cavity (10). Thus, during the coupling of the counterpiece (1) and the fixing piece (6), the second section (9) of the fixing piece (6) presses against and elastically deforms the mouthpiece (5) and the cavity (10) until the second section (9) is housed in the cavity (10), and the counterpiece (1) and the fixing piece (6) are coupled. This coupling is reversible, where the second section (9) presses against and elastically deforms the mouthpiece (5) and the cavity (10) until the second section (9) is outside the cavity (10), and the counterpiece (1) and the fixing piece (6) are uncoupled by a force. Figure 1 shows an exploded view of the joining tack button, according to a first embodiment in which the fixing piece (6) is located on the counterpiece (1), where the insertion body (8) is oriented towards the internal channel (4). From this position shown, when a longitudinal force is applied, the insertion body (8) is inserted into the internal channel (4), producing the elastic deformation of the mouthpiece (5) and the cavity (10) by the second section (9). In some embodiments, the tack button is installed using industrial presses employed in the conventional textile industry, where the textile element is positioned between the fastening piece (6) and the counterpiece (1). In these cases, the tack button grips the textile element, folds of the textile element, or several textile elements. The height of the receiving body (3) corresponds to the height of the button, since the textile element is located between the opening (5) and the second base (7) in the joined position. The textile element is also trapped between the first and second sections (11, 9) and the cavity (10), where an elastic pressure is exerted that prevents the button from slipping along the textile element. In this embodiment shown, the insertion body (8) has a first section (11) which is cylindrical and part of the second base (7), a second section (9) which is spherical, and a third section (13) which is conical. This third section (13) extends from the second section (9) and is intended to orient the insertion body (8) towards the opening (5) and to pierce the fabric, thus preventing the textile element from slipping over the insertion body (8). Figure 2 shows a perspective view of the tack button in a position prior to joining. For example, in this embodiment the first base (2) and the second base (7) are circular and of similar diameters. Furthermore, the receiving body (3) has the internal conduit (4) comprising the mouthpiece (5), the cavity (10) extending from the mouthpiece (5), and a recess (14) extending from the cavity (10). The recess (14) is cylindrical and is intended to accommodate the third section (13) in the joined position. The mouthpiece (5) and cavity (10) are elastic, meaning they deform when subjected to a force and return to their original position when the force is removed. Thus, at least the mouthpiece (5) and cavity (10) deform when pressed by the second section (9) during coupling. The mouthpiece (5) expands its diameter to allow the passage of the second section (9), and when the second section (9) is partially inserted into the cavity (10), it elastically pushes it into the cavity (10) so that the mouthpiece (5) and cavity (10) return to their original position. Figure 3 shows the tack button in the fastening position, where the textile garment, not shown, is located between the opening (5) and the second base (7). In this first embodiment, the insertion body has a height that allows the garment to be fastened like a button, where the first base (2) is inserted into a hole in the textile garment and prevents the button from coming out of said hole. Figure 4 shows in section the first embodiment in the joined position, where the second section (9) is housed in the cavity (10) inside the receiving body (3). In this joined position, the diameter of the mouthpiece (5), which is smaller than the diameter of the second section (9), is intended to prevent the insertion body (8) from coming out of the internal conduit (4), unless a sufficient decoupling force is applied to overcome the elastic resistance of the cavity (10) and the mouthpiece (5). Furthermore, it is shown how the third section (13) is housed in the recess (14). The garment, not shown, in its position of use is pierced by the third section (13) and trapped between the second section (9) and the cavity (10), thus preventing the garment from slipping. Figure 5 shows an exploded view of a second embodiment in which the opening (5) is located on one of the faces of the first base (2), and the receiving body (3) is projected perpendicularly from the opposite face of the first base (2). Thus, in this second embodiment, the textile element in the joining position is located between the first base (2) and the second base (7). Furthermore, in the attachment position shown in Fig. 6, the tack button is configured as a textile rivet for finishing and reinforcing stress points on garments, such as pocket corners. Thus, the receiving body (3) has a geometry designed to be visible on the garment's surface. Figure 7 shows a cross-section of the second embodiment in the joined position, where the second section (9) is housed in the cavity (10), and where the textile garment, not shown, is located between the second section (9) and the cavity (10), and between the first base (2) and the second base (7). As in the first embodiment, in the second embodiment the mouthpiece (5) and the cavity (10) are elastically deformed by the second section (9) when the force is applied to couple or uncouple the counterpiece (1) and the fastening piece (6). Furthermore, the second embodiment also has the recess (14), in which the third section (13) is housed in the use position. This recess (14) is spherical and its height is equal to the height of the third section (13), where in the joined position the tip of the third section (13) rests in the recess (14). In both embodiments, the insertion body (8) is rigid, i.e., made of any material that has sufficient rigidity to maintain its shape during insertion and retention in the internal conduit (4), while the receiving body (3) has the mouthpiece (5) and the cavity (10) elastically deformable, i.e., made of any material capable of undergoing reversible elastic deformation and recovering its original shape when the applied force ceases. The materials of the mouthpiece (5) and the cavity (10) of the counterpiece (1) are, for example, elastic plastics, thermoplastic plastics, thermoset plastics with elastic behavior, elastomers in any of their varieties, thermoplastic elastomers, thermoset elastomers, silicones, natural rubbers, synthetic rubbers, synthetic or natural polymers, bioplastics, bioelastomers, polymers of renewable or biological origin, biodegradable or compostable polymers, polyurethanes, hydrogels, cellular or foamed materials with elastic behavior, elastic matrix composite materials, elastic textile materials, recycled materials with elastic properties, as well as any combination, mixture, copolymer, polymer alloy or derivative thereof, and any other known material. The insert body material (8) is, for example, plastic in any of its varieties, engineering or technical plastics, rigid thermoplastics, thermoset plastics, reinforced polymers, rigid biopolymers, polymers of renewable origin, biodegradable or compostable polymers, metal in any of its varieties, metal alloys, composite materials, fiber-reinforced materials, carbon fiber, glass fiber, aramid fiber, technical or advanced ceramics, technical glass, densified lignocellulosic materials, engineered wood, processed bamboo, or engineered cork. Such materials may include sintered materials, powder metallurgy materials, materials obtained by additive manufacturing or 3D printing, rigid recycled materials, mineral or mineral-based materials, as well as any combination, mixture, alloy, coating, or derivative thereof, and any other known material.

Claims

1. A tack button for joining textile garments comprising: - a counterpiece (1) comprising: a first base (2), and a receiving body (3) extending perpendicularly with respect to the first base (2) and incorporating an axial internal channel (4) and an opening (5) communicating with the internal channel (4), - a fastening piece (6) attachable to the counterpiece (1) comprising: a second base (7), and an insertion body (8) extending perpendicularly with respect to said second base (7), wherein the insertion body (8) is inserted into the internal channel (4) of the receiving body (3) through the opening (5) in the joining position, and characterized in that the insertion body (8) has: - a first section (11) extending from the second base (7), which is cylindrical and whose diameter is smaller than the inner diameter of the opening (5), - a second section (9) extending from the first section (11),which is spherical and whose diameter is greater than the inner diameter of the mouthpiece (5), and is intended to be inserted into the internal channel (4) of the receiving body (3), and because the counterpiece (1) comprises: - at least one cavity (10) located in the internal channel (4) that extends internally from the mouthpiece (5) of said receiving body (3), which is spherical and has a diameter equal to or greater than the diameter of the second section (9) of the insertion body (8), wherein the mouthpiece (5) and the cavity (10) are elastic and are intended to deform to allow the passage of the second section (9) into the cavity (10).

2. The joining tack button according to claim 1, wherein the second section (9) rests in the cavity (10) in the position of use.

3. The joining tack button according to claim 1, wherein the material of at least the mouth (5) and the cavity (10) of the counterpiece (1) are selected from elastic plastic, thermoplastic plastics,elastomers, silicones, elastic compounds, or copolymers.

4. The joining tack button according to claim 1, wherein the insertion body (8) is made of a material selected from rigid plastics, reinforced polymers, composite materials, metals or metal alloys, glass, ceramics, or wood.

5. The joining tack button according to claim 1, wherein the insertion body (8) comprises a third conical section (13) extending from the second section (9) and intended to pierce the textile element.

6. The joining tack button according to claim 5, wherein the internal channel (4) comprises a recess (14) extending from the cavity (10) intended to house the third section (13) of the insertion body (8).

7. The joining tack button according to claim 1, wherein the first base (2) and / or the second base (7) are of essentially circular geometry.