HINGE FOR BATHROOM PARTITION DOOR

Abstract

Hinge (1) for pivoting doors (14) of bathroom partitions, comprising: - a fixed leaf (11) connectable to an external support structure; - a rotating leaf (12) connectable to a pivoting door element (14) with respect to the external support structure; - a pivoting mechanism (13) that connects, by means of a hinged articulated joint, the rotating leaf (12) to the fixed leaf (11); characterized in that it comprises: - an anchoring piece (15) attached to the fixed leaf (11) by means of an adjustable sliding joint, wherein said anchoring piece (15) is configured to be rigidly anchored to the external support structure; and - fixing and adjusting means (17, 18) that rigidly fix and adjust the position of the anchoring piece (15) to the fixed leaf (11).

Description

HINGE FOR BATHROOM PARTITION DOOR OBJECT OF THE INVENTION AND TECHNICAL FIELD The present invention relates to a hinge for bathroom partition doors, and more specifically to a hinge of the type comprising a fixed blade connectable to an external support structure, such as a wall or partition, and a rotating blade connectable to a pivoting door element of the partition. The object of the invention is to provide a hinge that incorporates additional adjustment means, allowing the hinge's anchoring position relative to the external support structure, such as a wall, to be adjusted by means of an anchoring piece attached to the fixed leaf via a sliding-adjustable joint. This adjustability allows for compensation of slight misalignments, irregularities, or dimensional tolerances that may occur during the installation of the partition, giving the hinge versatility and multiple adaptability to the possible and common misalignments that may be encountered during the installation of this type of product. The invention finds application in the technical sector of fittings and accessories for bathroom screens, and more specifically in the field of hinges for pivoting or folding doors of shower or bathtub screens. BACKGROUND OF THE INVENTION In residential and commercial sanitary installations, the delimitation of the shower or bathtub area with glazed enclosures is a widely adopted solution. These enclosure systems, commonly called shower screens, fulfill the essential function of containing the water within the bathing area during use, thus preventing water splashes from reaching the rest of the room. The absence of these containment elements can cause various problems, such as the formation of puddles that increase the risk of slips and falls, the deterioration of fixtures and coverings due to continuous exposure to moisture, and, in general, unsanitary conditions in the bathroom. The most common configurations for these enclosure systems include pivoting, hinged, sliding, or folding panels, typically made with thin tempered glass. This preference stems from both aesthetic considerations, providing a sense of spaciousness and light, and ease of installation and maintenance. Specifically regarding pivot-type enclosures, the articulation elements used are predominantly specialized hinges. These fittings can be classified into two categories according to their method of attachment to the glass panel: those that use high-strength structural adhesives, and those that use mechanical systems involving through-holes in the glass through which threaded fasteners are inserted. These hinges may also require anchoring to an external support structure, which could consist of a vertical surface, a fixed side panel of the enclosure itself, a wall, or any other suitable rigid surface. Representative examples of these devices can be found in the prior art. Patent ES2898923T3 describes a hinge equipped with certain adjustment systems. Similarly, document ES2588440T3 discloses a panel joining device that allows pivoting movement, generating a relative folding between two panels. Due to their inherent design, these pivoting enclosures typically incorporate perimeter sealing elements, such as elastomeric profiles or weatherstripping, whose function is to guarantee watertightness in the closed position, thus preventing water infiltration that would lead to the aforementioned problems. However, these sealing elements create a slight protrusion or raised edge that, under certain circumstances, can hinder the opening and closing of the pivoting panel. To facilitate this operation, certain hinges incorporate progressive lifting mechanisms. The operating principle is based on a stationary pivoting element on which a moving component travels. This moving component is designed so that, in the closed position of the shower screen, it is at the lowest point of its travel on the pivot. This pivot, usually located on the lower hinge of the assembly, remains fixed. As the panel rotates towards the open position, the moving component gradually rises along a cam profile on the stationary pivot, thus vertically raising the glass panel a sufficient distance to clear the edge of the weatherstripping without requiring additional effort from the user. Document ES1322242 describes a shower screen hinge comprising a first fixed leaf and a second movable leaf, coupled together by a hinge mechanism. The distinctive feature of this hinge lies in the incorporation of a limit screw specifically configured to restrict the lifting of the pivoting panel during opening, thus preventing accidental disengagement of the hinge. However, in many practical bathroom screen installations, the configuration does not follow this symmetrical scheme. On the contrary, it is common for one of the hinge leaves to be fixed directly to a vertical surface or wall, while the opposite leaf is attached to the pivoting glass panel of the screen. These asymmetrical configurations present additional problems related to installation tolerances and the inherent irregularities of the building surfaces. Conventional hinges available on the market typically incorporate adjustment and regulation systems on the leaf that attaches to the glass panel, usually using adjusting nuts or similar devices to compensate for minor dimensional deviations. However, these hinges systematically lack adjustment mechanisms on the leaf that anchors to the wall or surface. This lack of adjustability at the wall anchor point significantly limits the ability to compensate for various types of misalignment commonly encountered in construction. Among the most frequent causes of these misalignments are: irregularities in the flatness of the mounting surface, deviations from the theoretical verticality of the wall, accumulated dimensional tolerances in the various constituent elements of the partition, and in general, imperfections inherent in the construction processes that rarely reach the ideal tolerances contemplated in the theoretical designs. The lack of adjustment mechanisms on the wall anchor plate forces the installer to perform an iterative process of positioning, marking, drilling, and fixing, repeating these operations until a satisfactory position is achieved. This procedure is laborious, time-consuming, and even then, does not guarantee an optimal result. Therefore, there is a clear need in the state of the art for a hinge for bathroom screens that incorporates additional adjustment means specifically in the blade intended for anchoring to the wall, allowing for simple, quick and precise compensation of installation irregularities and tolerances, without the need to carry out additional work on the wall or to proceed with the dismantling and reassembly of the hinge. DESCRIPTION OF THE INVENTION The present invention satisfactorily solves the problem described in the background section by incorporating an anchoring piece linked to a fixed hinge leaf via a sliding-adjustable joint, along with fixing and adjustment means that allow the anchoring piece's position relative to the fixed leaf to be adjusted and secured within a specified distance. This adjustability provides a highly versatile hinge, adaptable to the various installation conditions commonly encountered in actual construction practice. In other words, the present invention satisfactorily solves the problem described above by means of a hinge for bathroom partition doors that incorporates additional adjustment means specifically designed to facilitate the adjustment of the anchoring position with respect to the external support structure. The hinge of the invention comprises a fixed blade connectable to an external support structure, a rotating blade connectable to a door element pivoting with respect to the external support structure, and a pivoting mechanism that connects, by means of a hinged joint, the rotating blade to the fixed blade. The distinctive feature of the invention lies in the incorporation of an anchoring piece attached to the fixed blade by means of a sliding-adjustable joint. This anchoring piece is configured to be rigidly anchored to the external support structure, such as a wall or other surface. Additionally, the hinge includes fixing and adjustment means that rigidly secure and regulate the position of the anchoring piece to the fixed blade. That is, the anchoring piece can be moved relative to the fixed blade in a linear direction, in a controlled manner, to compensate for any imperfections that may be encountered in an installation. The fact that it is adjustable means that the anchoring piece can be moved in a controlled manner relative to the fixed blade, in a linear direction. The adopted position can be rigidly fixed using the fixing and adjustment means. This adjustability allows the installer to precisely adjust the hinge's position relative to the wall or external support structure after initially attaching the anchor piece to said structure. This compensates for irregularities, misalignments, or dimensional tolerances without requiring new drilling or modifications to the wall. The adjustability thus implies three essential functionalities: controlled movement, the ability to select any desired position, and the ability to rigidly lock the selected position to guarantee the structural stability of the assembly during use of the partition. This configuration offers a key advantage over the systems described in the background section: it allows the hinge's anchoring position to be adjusted relative to the wall or surface after the anchor piece has been initially fixed to the external support structure. This way, the installer can first secure the anchor piece to the wall using screws and wall plugs, and then adjust the position of the fixed hinge relative to the anchor piece, compensating for any irregularities or misalignment without needing to drill new holes in the wall. In a particular embodiment of the invention, the anchoring piece is configured to be positioned, with respect to the fixed blade, between two extreme positions: a first retracted extreme position and a second extended extreme position. These two extreme positions are separated by an adjustment distance, where said adjustment distance is oriented in a straight transverse direction, perpendicular to a longitudinal direction defined by an axis that defines the hinged joint. This transverse orientation of the adjustment distance is particularly advantageous, as it allows for compensation of deviations in the distance between the wall and the pivoting door element, which are the most frequent deviations in practical installations. Because it is oriented perpendicular to the hinge's axis of rotation, the adjustment does not affect the operation of the articulation mechanism, maintaining the correct alignment of the pivot axis. With this design, the permitted adjustment is limited to a width determined by the separation of the two extreme positions, which facilitates its use and installation. In a preferred embodiment, the adjustment distance is between 3 and 10 mm. This adjustment range has been carefully selected to cover the most common tolerances and irregularities found in bathroom partition installations, without compromising the structural stability of the hinge or requiring excessively bulky components. A range of less than 3 mm might be insufficient to compensate for the typical irregularities of building surfaces, while a range greater than 10 mm could compromise the rigidity of the assembly and require excessively sized components that would negatively affect the aesthetics of the hinge. In a particularly preferred embodiment, the adjustment distance is 5 mm. This specific dimension represents an optimal balance between adjustability and overall compactness, and is sufficient to resolve the vast majority of installation situations encountered in practice. In a specific embodiment, the fixed blade comprises a housing with an opening located on a front surface of said housing, into which the anchoring piece is inserted, loosely fitted, at least partially, within the housing. A first end portion of the anchoring piece protrudes through the opening of the housing and comprises fastening means configured to connect with the external support structure. Preferably, the housing is prismatic in shape, and being adjusted with play, it allows the displacement of the anchor piece in the defined transverse direction. This design provides multiple advantages. First, housing the anchoring piece inside the fixed blade casing protects the adjustment mechanism from contact with water and moisture, extending the assembly's lifespan. Secondly, by only the first extreme part of the anchor piece protruding, the visual impact of the regulation system is minimized, maintaining a clean and compact aesthetic. The fastening means located at the first end of the anchor piece allow connection to the external support structure using conventional fixing systems, such as screws and plugs, without requiring special hardware or non-standard fixing systems. In one particular embodiment, the housing of the fixed blade comprises a through-adjustment slot located in an upper wall of the housing. The adjustment slot has a length (distance between ends) equal to the adjustment distance and is oriented in the transverse direction. The anchoring piece comprises an adjustment hole located on an upper face of the anchoring piece, where said adjustment hole is aligned with the adjustment slot. Alignment means that the adjustment hole is positioned so that it spatially coincides with the adjustment slot, allowing the limiting pin to pass through both elements simultaneously. This alignment implies that the adjustment hole is oriented in the same transverse direction as the adjustment slot, so that when the anchor piece moves within the housing, the limiting pin slides along the adjustment slot, guiding and limiting the anchor piece's movement within the range defined by the length of the adjustment slot, which corresponds to the adjustment distance. The fixing and regulating means comprise a limiting pin inserted and fixed to the regulating hole, which passes through the regulating slot, thus limiting the displacement range of the anchor piece to the length of the regulating slot. This collet and pin limiting system offers several technical advantages. First, it precisely and mechanically defines the permissible displacement range, preventing the anchor piece from moving beyond the established limits. Adjustment can be made from the outside of the fixed blade. Second, the limiting pin acts as a guide during the anchor piece's movement, ensuring that it occurs exclusively in the desired transverse direction, without unwanted lateral deviations or rotations. Third, the collet's location on the upper wall of the housing facilitates access for adjustment, allowing the installer to visualize the pin's position within the collet and thus determine the degree of adjustment applied. In a complementary embodiment, the housing of the fixed blade comprises a threaded, through-hole adjustment located in a side wall of the housing. The anchoring piece comprises an adjustment and tightening surface located on a side face of the anchoring piece. The fixing and adjusting means comprise a tightening screw threaded into the adjustment hole, wherein said tightening screw is a means of applying pressure to the adjustment and tightening surface to lock the position of the anchoring piece relative to the fixed blade. This tightening screw locking system provides a rigid and secure fixation of the anchor in the desired position. As the tightening screw is threaded into the adjustment hole, it advances into the housing until it contacts the clamping surface of the anchor. Continued tightening of the screw generates a compressive force that presses the anchor against the internal walls of the housing, locking it in place through friction. The location of the adjustment hole on a side wall of the housing facilitates access to the tightening screw during installation, allowing the installer to adjust and lock the position of the anchor piece using conventional tools, such as Allen wrenches or screwdrivers, without the need to disassemble other hinge components. In an improved embodiment of the locking system, the adjustment and tightening surface of the anchoring piece comprises a toothed, meshed, or grooved area for receiving an end portion of the tightening screw. A surface with a high degree of roughness could be used. Alternatively, different materials that readily deform plastically under pressure, such as that described, could be used, thus making the fastening more secure. This design offers significant advantages in terms of locking security and precision. The serrated, geared, or grooved area creates multiple discrete contact points between the tightening screw and the locking piece, instead of continuous contact on a smooth surface. These discrete contact points act as locking positions, providing a more secure lock that better withstands vibrations and dynamic stresses that may occur during use of the partition. Additionally, the toothed, geared, or grooved area allows for more precise position adjustment, as each tooth or groove defines a specific position of the anchor piece. The installer can thus select the optimal position from the various discrete positions defined by the teeth or grooves, achieving a finer fit than with a smooth surface. In a specific embodiment, the anchoring piece comprises at least one anchoring hole located at the first end of the piece, oriented transversely. This anchoring hole is configured to receive conventional fasteners, such as anchor bolts, which pass through the hole and are anchored in the wall using plugs or anchoring systems appropriate to the wall type. The transverse orientation of the anchoring hole, i.e., perpendicular to the wall surface, facilitates installation and ensures that the tensile forces generated by the weight of the door and the opening and closing forces are optimally transmitted to the wall. The configuration with at least one anchor hole allows the fixing system to be adapted to different types of surfaces and installation conditions. For installations on high-strength surfaces, a single anchor hole with a suitably sized screw may be sufficient. For installations on lower-strength surfaces or in situations requiring greater security, two or more anchor holes with their corresponding screws can be used, thus distributing the load over a larger surface area of ​​the surface. In a particular embodiment of the invention, the fixed blade comprises a fixed tubular body, and the rotating blade comprises a pivoting tubular body assembled, by means of the rotation mechanism, to the fixed tubular body of the fixed blade. Both tubular bodies are axially aligned, with the pivoting tubular body located above the fixed tubular body, and the rotation mechanism located inside both tubular bodies. This tubular configuration offers numerous technical and aesthetic advantages. First, the tubular bodies provide a rigid and robust structure capable of withstanding the stresses generated by the door's weight and the forces of opening and closing, while maintaining a relatively low weight. Second, housing the pivot mechanism inside the tubular bodies protects it from contact with water and moisture, extending its lifespan and reducing maintenance requirements. Third, this configuration offers a clean and compact aesthetic, concealing the mechanical components of the pivot mechanism and presenting only the external surfaces of the tubular bodies. The axial alignment of both tubular bodies, with the pivoting tubular body located above the fixed tubular body, corresponds to the typical configuration of hinge installation for partitions, where the fixed blade is located at the bottom and the rotating blade at the top, supporting the weight of the door by means of vertical transmission of forces. In a specific embodiment of the rotating mechanism, it comprises a support shaft rigidly attached to the fixed blade, located inside the fixed tubular body, and a rotating bushing rigidly attached to the rotating blade, located inside the pivoting tubular body. The support shaft and the rotating bushing are assembled by means of a hinged connection, with respect to a rotation axis direction defined by the hinged articulated joint of the hinge, and a sliding connection, in said linear direction of the rotation axis, where said hinged and sliding connection are linked. This linked hinged and sliding connection configuration provides the progressive lifting functionality of the door during opening, necessary to overcome the protrusion of the perimeter sealing elements. The link between the pivoting and sliding movements means that when a relative rotation occurs between the support shaft and the pivot bushing (corresponding to the opening or closing of the door), a simultaneous axial displacement of the pivot bushing relative to the support shaft occurs (corresponding to the raising or lowering of the door, depending on whether it is opening or closing). The support shaft, being rigidly attached to the fixed leaf, remains stationary during hinge operation. The rotating bushing, being rigidly attached to the rotating leaf, rotates and moves axially with the door during opening and closing. The connection between these two elements transmits forces in a controlled manner, providing smooth and predictable movement. In a specific constructive embodiment of the rotating mechanism, the support shaft comprises an outer helical surface, and the rotating bushing comprises an inner helical surface complementary to the outer helical surface of the support shaft, where both helical surfaces are in sliding contact with each other. This implementation using complementary helical surfaces provides the mechanical link between the rotary and sliding motions described above. The helical surfaces act as a screw mechanism, where the relative rotation between the support shaft and the rotating bushing is automatically converted into axial displacement due to the helical geometry of the contacting surfaces. The pitch of the helix (the axial distance corresponding to one complete turn) determines the relationship between the door opening angle and the vertical lift achieved, and this parameter can be optimized to provide the necessary lift to overcome the protrusion of the joint elements with the usual opening angle of the partition doors. In a further embodiment, the rotation mechanism comprises a limiting screw attached to an axial bore of the support shaft, wherein said limiting screw freely passes through a sliding bore of the rotating bushing. The limiting screw comprises a head located at a predetermined distance from the support shaft, defining an axial displacement length of the rotating bushing relative to the support shaft. This lift-limiting system provides a fundamental safety function: it prevents the rotating bushing, and by extension the rotating blade and the door, from moving axially beyond a set limit, thus preventing accidental disengagement of the hinge. The limiting screw, being attached to the axial hole of the support shaft, remains stationary along with the support shaft. The rotating bushing, during its rotational and axial displacement, slides along the limiting screw through the sliding hole. The clearance between the limiting screw and the sliding hole allows this relative movement without excessive friction. When the rotating bushing reaches its maximum raised position, the bottom of the sliding hole contacts the head of the limiting screw, preventing any further axial displacement. The distance between the head of the limiting screw and the support shaft thus determines the maximum permissible axial displacement, which must be sufficient to provide the necessary lift to overcome the protrusion of the sealing elements, but not excessive to avoid the risk of dislodging. In a complete embodiment of the hinge, it comprises at least one adjusting nut housed in a recess of the rotating blade, a front cover rigidly attached, by means of removable fastening means, to the rotating blade, wherein said front cover covers the recess of the rotating blade, and a decorative plate rigidly attached to the rotating blade. Additionally, the hinge comprises at least one partition screw threaded into at least one adjusting nut, which passes through a through-hole in the trim plate and a through-hole in the front cover, rigidly connecting these elements to the pivoting blade. The at least one partition screw is configured to pass through a hole in the pivoting door element, fixing the pivoting blade to an end portion of said pivoting door element. This fixing system offers multiple functionalities. The adjustment nut, housed in the recess of the rotating blade, allows the position of the rotating blade relative to the door to be adjusted by tightening or loosening the partition screw, without affecting the other components. This adjustment complements the adjustment provided by the anchor piece on the fixed blade, allowing for bidirectional adjustment of the hinge position. The front cover conceals the recess and adjusting nut, providing a clean aesthetic and protecting these components from water and moisture. Removable mounting hardware allows the front cover to be removed when access to the adjusting nut is needed for position adjustments. The decorative plate provides a wide and aesthetically pleasing contact surface between the hinge and the door, distributing the forces over a larger surface of the glass and thus reducing localized stresses that could cause the glass to break. The partition screw, by passing through the decorative plate, the front cover, the door and threading into the adjusting nut, rigidly joins all these elements, providing a secure and stable fixing of the rotating blade to the door. Taken together, all these technical features provide a versatile hinge, adaptable to multiple installation conditions, which allows compensation for irregularities and tolerances both in the wall and in the door, facilitating installation and ensuring correct and long-lasting operation of the entire partition. BRIEF DESCRIPTION OF THE DRAWINGS To complete the description and to aid in a better understanding of the characteristics of the invention, this descriptive document is accompanied, as an integral part thereof, by figures which, for illustrative and non-limiting purposes, depict the following: Figure 1A shows a perspective view of the hinge, illustrating the arrangement of the fixed blade relative to the rotating blade, as well as its external components. The adjustment hole for the fixed blade, located on one of its lateral surfaces, is particularly visible. The anchoring piece can also be seen in its first fully retracted position relative to the fixed blade. Figure 1B shows a perspective view of the hinge similar to that shown in Figure 1A, except that in this case the anchor piece is offset from the fixed blade by the adjustment distance. This view also shows the tightening screw that secures the anchor piece to the fixed blade. Figure 2A.- Shows a front view of the hinge in which the arrangement of the blades can be seen, as well as in dashed lines, how the anchor piece is located in the housing of the fixed blade, being locked in a first extremely retracted position, by the tightening screw that is inserted in the adjustment hole. Figure 2B.- Shows a front view of the hinge similar to that shown in Figure 2A, where the anchor piece is displaced an adjustment distance with respect to the fixed blade, and you can see how the limiting pin is in a displaced position with respect to that shown in Figure 2A. Figure 3A.- Shows a view similar to that shown in Figure 2A, in which the interior of the hinge can be seen, showing the interior lines as continuous, the tightening screw and the limiting pin having been removed, so that you can see how the elements are distributed inside each of the blades. Figure 3B shows a plan view of the hinge attached to one end of the pivot door via the partition screws. From this perspective, the adjustment hole for the tightening screw is also visible. Figure 4A.- Shows an exploded perspective view of the hinge with the fixed blade removed or hidden, so that the distribution of the elements it comprises and the anchoring piece can be seen. Figure 4B.- Shows a perspective view in which the fixed blade has been exploded, allowing one to appreciate the characteristics and shape of the anchor piece, as well as its relationship with the anchor bolts. Figure 4C.- Shows a cross-sectional view of the fixed blade being assembled to the anchor piece, as well as to the anchor screws and plugs, which allows you to clearly appreciate the relationship between the adjustment and tightening surface of the anchor piece with respect to the adjustment hole of the fixed blade, into which the tightening screw would be inserted. Figure 5A.- Shows a perspective view of the rotating mechanism, allowing you to appreciate the relationship between the elements it comprises. Figure 5B.- Shows a perspective view similar to that shown in Figure 5A, in which the elements of the rotating mechanism are exploded with respect to the axis of rotation of said mechanism. Figure 6A.- Shows a perspective view with the interior lines of the rotating bushing and the support shaft shown in dashed lines, thus allowing the helical surfaces of each of these elements to be appreciated, as well as their relationship with the axial fixing screw. Figure 6B.- Shows a perspective view of a part of the rotating mechanism cut in half, in which the relationship of these parts can be seen, as well as the helical surfaces that generate the axial displacement when the rotating bushing rotates with respect to the support axis. List of elements shown in the figures: - Hinge (1) - Plug (2) - Front cover (3) - Decorative plate (4) - Rotating bushing (5) o Inner helical surface (5a) or Sliding hole (5b) - Support shaft (6) o Outer helical surface (6a) o Axial hole (6b) - Limiting screw (7) - Axial fixing screw (8) - Adjustment nut (9) - Partition screw (10) - Fixed shovel (11) or Fixed tubular body (11a) or Accommodation (11b) or Adjustment hole (11c) o Regulator Coliseum (11d) - Rotating shovel (12) or pivoting tubular body (12a) - Rotation mechanism (13) - Pivot door (14) - Anchor piece (15) or Regulation hole (15a) or Fitting and tightening surface (15b) or Anchor hole (15c) - Anchor screw (16) - Means of fixing and regulating (17, 18) or Delimiter pin (17) or Tightening screw (18) - Adjustment distance (d) . PREFERRED EMBODIMENT OF THE INVENTION As can be seen in the figures, the present invention consists of a hinge (1) specially adapted for pivoting doors (14) of bathroom partitions that incorporates an additional adjustment system in the fixed blade (11), allowing the anchoring position to be adjusted with respect to an external support structure, such as a wall or partition, by means of an adjustable anchoring piece (15). Figure 1A shows a general perspective view of the hinge (1) in its assembled configuration. This view clearly shows the relative arrangement of the two main components: the fixed blade (11) and the rotating blade (12), connected by a pivoting mechanism (13) (concealed inside the tubular bodies of the blades in Figures 1A and 1B) that allows the opening and closing of the pivoting door (14). The fixed blade (11) comprises a fixed tubular body (11a) of cylindrical configuration, while the rotating blade (12) comprises a pivoting tubular body (12a), also of cylindrical configuration. Both tubular bodies (11a, 12a) are axially aligned, with the pivoting tubular body (12a) located above the fixed tubular body (11a). On the side surface of the fixed blade (11), the adjustment hole (11c) can be seen, which is one of the most important elements of the preferred embodiment of the regulation system of the invention. This adjustment hole (11c) is threaded and passes through the side wall of the housing of the fixed blade (11). In the configuration shown in Figure 1A, the anchoring piece (15) is in its first extreme retracted position, i.e., completely inserted into the housing (11b) of the fixed blade (11), with only its first end portion protruding through the front opening of said housing (11b). Figure 1B presents the same perspective view as Figure 1A, but in this case the anchoring piece (15) is displaced relative to the fixed blade (11) until it reaches its second extreme position, fully extended. The separation between these two extreme positions defines the adjustment distance (d), which in the preferred embodiment is 5 mm, although it can range from 3 to 10 mm depending on the specific requirements of each installation. This adjustment distance (d) is oriented in a straight transverse direction, perpendicular to the longitudinal direction defined by the hinge's pivot axis (1). Figure 1B clearly shows the tightening screw (18), which forms part of the fixing and adjusting means (17, 18) of the invention. The tightening screw (18) is threaded into the adjustment hole (11c) and acts as a pressure means on an adjusting and tightening surface (15b) located on a side face of the anchoring piece (15). When the tightening screw (18) is tightened, it presses against the adjusting and tightening surface (15b), locking the position of the anchoring piece (15) relative to the fixed blade (11) by friction. In an improved embodiment, the adjusting and tightening surface (15b) comprises a toothed, meshed, or splined area that receives the end portion of the tightening screw (18), providing a more secure and precise locking mechanism through the engagement of the teeth or splines with the tip of the screw. Figures 2A and 2B show front views of the hinge (1) that allow for a more detailed appreciation of the internal arrangement of the components. In these views, the elements located inside the fixed blade (11) are represented by dashed lines, allowing visualization of the anchor piece (15) within the housing (11b) in its two extreme positions. As is clear, the anchor piece (15) can be positioned in any of the infinite positions between these two extremes. In Figure 2A, the anchoring piece (15) is in its first fully retracted position, locked in this position by the tightening screw (18) inserted into the adjustment hole (11c) and pressing against the adjustment and tightening surface (15b). On the top of the fixed blade housing (11), the adjusting slot (11d) can be seen. This is an elongated through-hole located in the upper wall of the housing. The adjusting slot (11d) has a length equal to the adjustment distance (d) and is oriented transversely. A limiting pin (17), shaped like an Allen-head screw, passes through the adjusting slot (11d). This pin is part of the fixing and adjusting means (17, 18) and is inserted and secured to an adjusting hole (15a) located on the upper face of the anchoring piece (15). Figure 2B shows the same front view, but with the anchor piece (15) displaced to its second extreme extended position, having been slid by the adjustment distance (d). In this configuration, it is clear how the limiting pin (17) has moved along the regulating slot (11d), now located at the opposite end of said slot. This slot and pin system provides precise guidance of the movement of the anchor piece (15), ensuring that the displacement occurs exclusively in the desired transverse direction, without lateral deviations or unwanted rotations, and mechanically limiting the maximum displacement range to the length of the regulating slot (11d). Figure 3A presents a view similar to Figure 2A, but in this case, the tightening screw (18) and the limiting pin (17) have been removed or concealed, and the interior lines are shown as continuous rather than dashed, allowing for a clearer view of the distribution of elements inside each of the blades (11, 12). In this view, the pivot mechanism (13) located inside both tubular bodies (11a, 12a) can be seen, as well as the arrangement of the other hinge components (1). The caps (2) can be seen on the top of both tubular bodies; these are closing elements that cover the open ends of the tubular bodies (11a, 12a), providing a clean aesthetic and protecting the pivot mechanism (13) from contact with water and moisture. Figure 3B shows a top plan view of the hinge (1) attached to one end of the pivot door (14) via the partition screws (10). From this perspective, the relationship between the rotating blade (12) and the pivot door (14), as well as the arrangement of the fasteners, can be seen. The partition screws (10) pass through holes in a decorative plate (4) and a front cover (3), as well as through holes in the pivot door element (14), finally threading into adjusting nuts (9) housed in a recess in the rotating blade (12). This fastening system allows the position of the rotating blade (12) relative to the pivot door (14) to be adjusted by tightening or loosening the partition screws (10), thus complementing the adjustment provided by the anchor piece (15) on the fixed blade (11). The front cover (3) is rigidly attached to the pivot blade (12) by removable fasteners, concealing the pivot blade recess (12) and providing a clean aesthetic while protecting the adjusting nuts (9) from water contact. The decorative plate (4) provides a large contact surface between the hinge (1) and the pivot door (14), distributing the forces over a larger area of ​​the glass and reducing localized stress. From this perspective, the adjustment hole (11c) on the side wall of the fixed blade (11) can also be seen, in which the tightening screw (18) must be placed to lock the position of the anchor piece (15). Figures 4A, 4B and 4C show two exploded views and a half-cut view, which allow you to appreciate in detail the configuration and relationship of the components of the anchor piece (15) and its fixing system to the external support structure. Figure 4A presents an exploded perspective view of the hinge (1) with the fixed blade (11) removed or concealed, allowing visualization of the arrangement of its components and, in particular, the configuration of the anchor piece (15). This view shows that the anchor piece (15) comprises two anchor holes (15c) located at its first end, oriented transversely. These anchor holes (15c) are configured to receive two anchor bolts (16), which are the fasteners connecting the anchor piece (15) to the external supporting structure, such as a wall or other surface. Figure 4B shows an exploded perspective view of the fixed blade (11), separating it from the anchoring piece (15) and the anchoring bolts (16). This view clearly shows the characteristics and shape of the anchoring piece (15), as well as its relationship to the anchoring bolts (16). It can be observed that the anchoring piece (15) has a substantially prismatic configuration that complements the housing (11b) for the fixed blade (11), with slightly smaller dimensions that allow for the necessary clearance adjustment for the adjustable displacement. On the upper face of the anchor piece (15) the adjustment hole (15a) is visible, aligned with the regulating slot (11d) of the fixed blade (11), and on the side face the adjustment and tightening surface (15b) is visible, which in this embodiment comprises a toothed, geared or grooved area to improve the locking with the tightening screw (18). It can also be seen in this view that the housing (11b) for the fixed blade (11), which has a prismatic configuration, contains the anchor piece (15) inserted loosely. This looseness allows the anchor piece (15) to move in the defined transverse direction, while the walls of the housing (11b) guide and limit movement in the other directions. Figure 4C shows a half-section view of the fixed blade (11) as it is assembled to the anchor piece (15), as well as to the anchor bolts (16) and the corresponding plugs inserted into the wall. This view clearly shows the relationship between the adjustment and tightening surface (15b) of the anchor piece (15) and the adjustment hole (11c) of the fixed blade (11). This view also shows how the anchor bolts (16) pass through the anchor holes (15c) of the anchor piece (15) and are anchored to the wall using plugs, providing a rigid and secure fixation of the anchor piece (15) to the external support structure. The transverse orientation of the anchor holes (15c) and the anchor bolts (16) ensures that the tensile forces generated by the weight of the door and the opening and closing forces are optimally transmitted to the wall. Figures 5A and 5B show the rotating mechanism (13) in isolation, allowing its configuration and operation to be appreciated. Figure 5A presents a perspective view of the assembled rotating mechanism (13), where its main components can be observed: the support shaft (6) and the rotating bushing (5). The support shaft (6) is rigidly attached to the fixed blade (11) and is located inside the fixed tubular body (11a), remaining stationary during operation of the hinge (1). The rotating bushing (5) is rigidly attached to the rotating blade (12) and is located inside the pivoting tubular body (12a), rotating and moving axially along with the pivoting door (14) during its opening and closing. Figure 5B shows a perspective view similar to Figure 5A, but with the elements of the rotating mechanism (13) exploded with respect to the axis of rotation of said mechanism. In this view, it can be clearly seen that the support shaft (6) and the rotating bushing (5) are assembled by means of a hinged connection, with respect to the direction of the axis of rotation defined by the hinged joint of the hinge (1), and a sliding connection, in said linear direction of the axis of rotation, where said hinged and sliding connection are linked. Also visible in this view is the limiting screw (7), which is attached to an axial hole (6b) in the support shaft (6) and freely passes through a sliding hole (5b) in the rotating bushing (5). The limiting screw (7) comprises a head located at a predetermined distance from the support shaft (6), thus defining a maximum axial displacement length of the rotating bushing (5) relative to the support shaft (6). This limiting system prevents the rotating bushing (5), and by extension the rotating blade (12) and the pivoting door (14), from moving axially beyond a set limit, preventing accidental disengagement of the hinge (1). Additionally, the rotation mechanism (13) comprises an axial fixing screw (8) that secures the connection between the support shaft (6) and the rotating bushing (5), keeping both elements properly assembled while allowing relative rotational and axial sliding movement. Figures 6A and 6B show in detail the linkage system between the rotating movement and the sliding movement of the rotating mechanism (13), which provides the functionality of progressive lifting of the pivoting door (14) during its opening. Figure 6A presents a perspective view with the inner lines of the rotating bushing (5) and the support shaft (6) shown as dashed lines, allowing the helical surfaces (5a, 6a) of each of these elements to be seen. The support shaft (6) comprises an outer helical surface (6a), and the rotating bushing (5) comprises an inner helical surface (5a) complementary to the outer helical surface (6a) of the support shaft (6). Both helical surfaces (6a, 5a) are in sliding contact with each other, acting as a screw mechanism where the relative rotation between the support shaft (6) and the rotating bushing (5) is automatically converted into an axial displacement due to the helical geometry of the contacting surfaces. In this view you can also see the relationship d of the support shaft (6) with the axial fixing screw (8), which keeps the rotating mechanism correctly assembled to the fixed blade (11). Figure 6B shows a perspective view of a section of the pivot mechanism (13), cut in half, allowing for a clearer appreciation of the relationship between the helical surfaces (6a, 5a) and how these generate axial displacement when the rotating bushing (5) rotates about the support axis (6). The helix pitch determines the relationship between the opening angle of the pivoting door (14) and the vertical lift achieved, being optimized to provide the necessary lift to overcome the protrusion of the perimeter sealing elements at the typical opening angle of partition doors. In operation, when the pivot door (14) is in the closed position, the rotating bushing (5) is at the lowest point of its travel on the support axis (6). When the pivot door (14) is opened, the rotating bushing (5) rotates about the support axis (6) and, due to the interaction between the helical surfaces (6a, 5a), gradually rises, vertically lifting the pivot door (14) a sufficient distance to clear the gasket protrusion without requiring additional effort from the user. When the pivot door (14) is closed, the process is reversed, with the rotating bushing (5) gradually descending until it reaches its lowest position again, where the pivot door (14) compresses the perimeter sealing elements, ensuring the watertightness of the enclosure. The hinge (1) installation process is carried out as follows: First, the installer fixes the anchor piece (15) to the wall using the anchor screws (16) and the corresponding wall plugs, with the tightening screw (18) loosened to allow the anchor piece (15) to move relative to the fixed leaf (11). Next, the pivot door (14) is positioned and the rotating leaf (12) is fixed to it using the partition screws (10). Subsequently, the installer adjusts the position of the fixed leaf (11) relative to the anchor piece (15), moving it in the transverse direction until the optimal position is reached to compensate for any irregularity or misalignment of the wall. Finally, the tightening screw (18) is tightened, rigidly locking the position of the anchor piece (15) with respect to the fixed blade (11), thus completing the installation without the need to make new holes in the wall.

Claims

1. A hinge (1) for pivoting doors (14) of bathroom partitions, comprising: - a fixed leaf (11) connectable to an external support structure; - a rotating leaf (12) connectable to a pivoting door element (14) relative to the external support structure; - a pivoting mechanism (13) connecting the rotating leaf (12) to the fixed leaf (11) by means of a hinged articulated joint; characterized in that it comprises: - an anchoring piece (15) attached to the fixed leaf (11) by means of an adjustable sliding joint, wherein said anchoring piece (15) is configured to be rigidly anchored to the external support structure; and - fixing and adjusting means (17, 18) that rigidly fix and adjust the position of the anchoring piece (15) to the fixed leaf (11). 2.Hinge (1) for bathroom partition doors, according to claim 1, characterized in that the anchoring piece (15) is configured to be located, with respect to the fixed leaf (11), between two extreme positions: - a first extreme position, retracted; - a second extreme position, extended; wherein said two extreme positions are separated by an adjustment distance (d), wherein the adjustment distance (d) is oriented in a straight transverse direction, perpendicular to a longitudinal direction defined by an axis that defines the hinged joint.

3. Hinge (1) for bathroom partition doors, according to the preceding claim, characterized in that the adjustment distance (d) is between 3 and 10 mm.

4. Hinge (1) for bathroom partition doors, according to the preceding claim, characterized in that the adjustment distance (d) is 5 mm. 5.Hinge (1) for bathroom partition doors, according to any of claims 2 to 4, characterized in that the fixed leaf (11) comprises a housing comprising a recess (11b), with an opening located in a front surface of said housing, where the anchoring piece (15) is inserted, loosely, at least partially, within the recess (11b); wherein a first end portion of the anchoring piece (15) protrudes through the opening of the recess (11b) and comprises fastening means configured to connect with the external support structure. 6.Hinge (1) for bathroom partition doors, according to claim 5, characterized in that the housing of the fixed blade (11) comprises a through-adjustment slot (l1d) located in an upper wall of the housing; wherein the adjustment slot (11d) has a length equal to the adjustment distance (d), and is oriented in the transverse direction; wherein the anchor piece (15) comprises an adjustment hole (15a) located on an upper face of the anchor piece (15), wherein said adjustment hole (15a) is aligned with the adjustment slot (11d); wherein the fixing and adjusting means (17, 18) comprise a limiting pin (17) inserted and fixed to the adjustment hole (15a), which passes through the adjustment slot (11d), thereby limiting the displacement range of the anchor piece (15) to the length of the adjustment slot (11d). 7.Hinge (1) for bathroom partition doors, according to claim 5 or 6, characterized in that the housing of the fixed blade (11) comprises an adjustment hole (11c), threaded and through, located in a side wall of the housing; wherein the anchor piece (15) comprises an adjustment and tightening surface (15b), located on a side face of the anchor piece (15); wherein the fixing and adjusting means (17, 18) comprise a tightening screw (18) threaded into the adjustment hole (11c), wherein said tightening screw (18) is a means of applying pressure to the adjustment and tightening surface (15b), to lock the position of the anchor piece (15) with respect to the fixed blade (11).

8. Hinge (1) for bathroom partition doors, according to the preceding claim, characterized in that the adjustment and tightening surface (15b) of the anchoring piece (15) comprises a toothed, meshed, or grooved area for receiving an end portion of the tightening screw (18). 9.Hinge (1) for bathroom partition doors, according to any of claims 5 to 8, characterized in that the anchoring piece (15) comprises at least one anchoring hole (15c) located in the first end portion of the anchoring piece (15), oriented in the transverse direction.

10. Hinge (1) for bathroom partition doors, according to any of the preceding claims, characterized in that the fixed leaf (11) comprises a fixed tubular body (11a) and wherein the rotating leaf (12) comprises a pivoting tubular body (12a) assembled, by means of the pivoting mechanism (13), to the fixed tubular body (11a) of the fixed leaf (11); wherein both tubular bodies (11a, 12a) are axially aligned, the pivoting tubular body (12a) being located above the fixed tubular body (11a), wherein the pivoting mechanism (13) is located inside both tubular bodies (11a, 12a). 11.Hinge (1) for bathroom partition doors, according to the preceding claim, characterized in that the pivot mechanism (13) comprises: - a support shaft (6) rigidly attached to the fixed blade (11), located inside the fixed tubular body (11a); - a rotating bushing (5) rigidly attached to the rotating blade (12), located inside the pivoting tubular body (12a); wherein the support shaft (6) and the rotating bushing (5) are assembled by means of a connection: - hinged, with respect to a direction of pivot axis defined by the hinged articulated joint of the hinge, and - sliding, in said linear direction of the pivot axis; wherein said hinged and sliding connection are linked. 12.Hinge (1) for bathroom partition doors, according to the preceding claim, characterized in that the support shaft (6) comprises an outer helical surface (6a); and wherein the rotating bushing (5) comprises an inner helical surface (5a) complementary to the outer helical surface (6a) of the support shaft (6); wherein both helical surfaces (6a, 5a) are in sliding contact with each other.

13. Hinge (1) for bathroom partition doors, according to the preceding claim, characterized in that the pivot mechanism (13) comprises a limiting screw (7), attached to an axial hole (6b) of the support shaft (6), wherein said limiting screw (7) freely passes through a sliding hole (5b) of the rotating bushing (5); wherein the limiting screw (7) comprises a head located at a predetermined distance from the support shaft (6), defining an axial displacement length of the rotating bushing (5) with respect to the support shaft (6). 14.Hinge (1) for bathroom partition doors, according to any of the preceding claims, characterized in that it comprises: - at least one adjusting nut (9) housed in a recess of the pivoting blade (12); - a front cover (3) rigidly attached, by means of removable fixing means, to the pivoting blade (12), wherein said front cover (3) covers the recess of the pivoting blade (12); - a decorative plate (4) rigidly attached to the pivoting blade (12); and - at least one partition screw (10) threaded into the at least one adjusting nut (9), passing through a through hole in the decorative plate (4) and a through hole in the front cover (3), rigidly joining said elements to the pivoting blade (12); wherein the at least one partition screw (10) is configured to pass through a hole in the pivoting door element, fixing the pivoting blade (12) to an end portion of said pivoting door element.