COVERING DEVICE FOR THE BUTTON OF AN ELECTRICAL MODULE

Abstract

A cover device that can be removably attached to a button, comprising a member and a fastening system. The member includes a lower surface suitable for interacting with the button, comprising two transverse sides, two longitudinal sides, and a frame. The frame extends from the lower surface in a connection direction and along the sides of the lower surface. The frame includes two opposing longitudinal components and two opposing transverse components. The fastening system includes fastening elements positioned near the longitudinal sides of the lower surface to be opposed in pairs with respect to a longitudinal plane extending in the connection direction and along a longitudinal axis of the lower surface. Each fastening element is elastically deformable and shaped to allow connection with a respective connecting element of the button.

Description

COVERING DEVICE FOR THE BUTTON OF AN ELECTRICAL MODULE DESCRIPTION The present invention relates to a cover device that can be removably connected to an electrical module, such as, for example, a button. The invention also relates to an electrical device comprising a cover device that can be removably connected to an electrical module. Generally, the button is connected to switches, which close or toggle electrical contacts, for example, to turn lights on or off. The switches can, in turn, be part of electrical modules that can be connected to a module holder. The holder typically includes insertion slots into which the electrical modules can be connected. The button cover system can also be configured as a "blank button." In this case, the cover device can be mounted on a button that has the form of a structure that can be connected to a holder or an electrical module, for example, to cover an empty slot in the module holder. Advantageously, the structure is not connected to a switch. In the context of the technical sector in question, cover devices are known that attach to buttons to protect them, for example, from impacts, or to make them more visible to a user, for example, through coloring or a pattern produced on the cover device. Examples of such solutions are described in US 2020 / 037422, US 4221941, and US 2020 / 144007. To connect the cover device to the button, threaded connections or an interlocking latching system are generally used. Threaded connections provide a stable mechanical connection but have the disadvantage that they require a tool, for example a screwdriver, to remove or mount the cover device on / off the button. However, the locking system allows the cover to be removed or mounted from / on the button without tools, but it has the disadvantage of being particularly fragile. This means there is a risk that the locking system of the cover will break during the mounting or removal operation. qqq7 nn / cznzve / uili Therefore, the technical problem addressed by the present invention is to provide a cover device that can be removably attached to a button that is structurally and functionally configured to overcome, at least partially, one or more of the disadvantages set forth with reference to the cited prior art. In the context of this problem, an object of the present invention is to provide a cover device that is particularly versatile and can be easily and detachably connected to an electrical module, such as, for example, a button. Another object of the present invention is to provide a cover device that is provided with a latching system that is particularly resistant to the mechanical loads that occur during the assembly and disassembly operations of the cover device and during normal use of the electrical device. These problems are solved and these objects are achieved by the invention by means of a cover device that can be removably connected to an electrical module and by means of a device for an electrical installation that are constructed in accordance with one or more of the features of the appended claims. According to one aspect of the invention, the cover device, removably connectable to an electrical module, such as, for example, a button, comprises a member and a latching system. The member includes a lower surface suitable for interacting with the electrical module and comprises two transverse sides, two longitudinal sides, and a frame. The frame extends from the lower surface in a connection direction and along the sides of the lower surface. The frame includes two opposing longitudinal components and two opposing transverse components. The latching system includes latching elements positioned near the longitudinal sides of the lower surface to be paired against each other with respect to a longitudinal plane extending in the connection direction and along a longitudinal axis of the lower surface.Each coupling element is elastically deformable and is shaped to allow connection with a respective connection element of the electrical module. The cover device related to the invention allows for a stable, reliable, and robust connection to the electrical module, particularly due to the positioning of the locking elements and the configuration of the components. Furthermore, the cover device can be easily mounted on and removed from the electrical module by a user. The cover device component can advantageously be colored or have a printed pattern, preferably on an outer surface opposite the inner surface, for example, to facilitate the visualization and identification of the specific module to which the device is connected. Preferably, the lower surface of the covering device member is square, or even more preferably substantially rectangular. In a Cartesian coordinate system associated with the covering device, the two transverse sides extend parallel to a longitudinal direction of the covering device, and the two longitudinal sides extend parallel to a transverse direction of the covering device. The longitudinal side preferably has a length between 4.5 cm and 5.5 cm. The transverse side preferably has a length between 1.5 cm and 2.5 cm. The connection direction is substantially perpendicular to the plane defined by the longitudinal and transverse directions. The connection direction is substantially perpendicular to the bottom surface of the button. Advantageously, the module on which the cover device is mounted forms part of an electrical installation device that can, in turn, be mounted on a support for electrical modules, for example, wall-mountable ones. The support preferably includes insertion slots into which the electrical modules can be connected. Preferably, the longitudinal side of the lower surface has dimensions that substantially correspond to a length of the slot in the support. In some embodiments, the cover device can be mounted on a structure that can be attached to a support for electrical modules, for example, to cover an empty slot in the support. In this case, the device formed in this way is configured as a "blank button." Preferably, the cover member is made of rigid material. This allows the cover to be securely attached to the electrical module button using the locking system, so that the pressure applied by the user also causes the button below to move, activating the switch, and at the same time, the cover moves along with the button during its tilting or axial movement. In the context of the present invention, the term “rigid” with reference to the material of the cover device is meant to signify that the device, and in particular its member, is not subject to significant deformation when a user acts with their finger on its surface, i.e., during normal use of the module. QQQ / nn / cznz / e / γΐΛΐ According to one aspect of the invention, the cover device is connected to the module button to move along with the button. Preferably, the cover device is made of polymeric material. This material is particularly advantageous in the construction of the covering device, allowing sufficient strength and sufficient rigidity for the purposes outlined above. Advantageously, the lower surface is substantially flat, for example, in the case of a button for a switch with axial control. This offers several advantages, including ease of printing, simplicity of mounting on the button, and structural strength. In other embodiments, the lower surface may be curved. The curvature is advantageously shaped to allow it to be combined with a button support surface, to which the cover device can be attached, the support surface itself being formed with a similar curvature. The surfaces may have this curvature, preferably if the cover device can be attached to a button for a switch with tilt control. Preferably, four fastening elements are present. Advantageously, these elements are positioned so that they are opposite each other in pairs with respect to the longitudinal plane extending in the connection direction and along the longitudinal axis of the lower surface. Advantageously, a first pair of fastening elements is opposite and preferably symmetrical with respect to a second pair of fastening elements with respect to the longitudinal plane. Advantageously, a third pair of fastening elements is opposite and preferably symmetrical with respect to a fourth pair of fastening elements with respect to a transverse plane extending in the connection direction and along a transverse axis of the lower surface. Advantageously, the longitudinal axis of the lower surface is equidistant from the longitudinal sides of the surface. Advantageously, the transverse axis of the lower surface is equidistant from the transverse sides of the surface. The lower surface of the member is preferably the surface facing the module or the surface facing the module during the assembly operation of the cover device on the module. QQQvnn / cznz / e / YiAi The fastening elements have a specific degree of elastic deformability. These elastic deformations are advantageous during the assembly or disassembly of the cover device onto / from the module and can facilitate these operations. During assembly, the fastening elements can be deformed and will elastically return to their original position once assembly is complete. According to one aspect of the invention, each engagement element comprises a support portion extending from the lower surface in the connection direction and an engagement portion that is suitable for interacting with a gripping portion of a respective connection element of the module. The support portion is advantageously configured in a shape substantially similar to a parallelogram. The hooking portion is preferably located near one end of the support portion. The support portion advantageously possesses a specific degree of elastic deformability that facilitates the mounting and dismounting of the cover device on / off the module. During connection between the cover device and the module, the support portion undergoes elastic deformation, which facilitates the engagement of the locking portion with the module's corresponding connecting element. This results in a particularly stable connection and simultaneously simplifies the mounting and dismounting of the cover device on / off the module. The gripping portion present in each module connection element is shaped to interconnect with the latching portion of the respective latching element of the cover device, as will be described in more detail below. Preferably, a beveled area may be formed on at least one of the frame components. Advantageously, the beveled area is formed near the longitudinal axis on at least one of the transverse components. Preferably, the beveled area is formed near the transverse axis on at least one of the longitudinal components. Advantageously, the beveled area may be present on both the transverse and longitudinal components, or on each component of the frame. The beveled area may be advantageously used to receive a tool, for example, the tip of a screwdriver, and to facilitate the removal of the electrical module from a potential holder, the electrical module being combined with the cover device. According to another aspect of the invention, the support portion is at least partially included in the frame. qqq7 nn / cznzve / uili Preferably, the support portion comprises a lower and an upper zone. Advantageously, the lower zone is at least partially enclosed within the frame. In some embodiments, the lower zone may partially protrude from the frame, advantageously in the transverse direction. Preferably, the upper zone protrudes from the frame, more preferably in the connection direction. The support portion being configured to be at least partially enclosed within the frame is particularly advantageous for simplifying the geometry of the covering device and further increasing its structural strength. Advantageously, the support portion is at least partially included in the longitudinal component of the frame. In other embodiments, the support portion is preferably at least partially included in the transverse component of the frame. In other embodiments, some coupling elements advantageously have the support portion included at least partially in the longitudinal component of the frame, and other coupling elements have the support portion included at least partially in the transverse component of the frame. Preferably, the engagement portion is configured as a first protrusion extending from the support portion. Advantageously, the first protrusion of the engagement portion comprises a first surface suitable for contacting a second surface of a respective connecting element of the module. Preferably, the first protrusion extends perpendicularly to the supporting portion. Advantageously, the first surface is flat. Preferably, the first surface is situated in a plane that is substantially parallel to the plane defined by the longitudinal and transverse directions of the covering device. Preferably, the gripping portion of each module connecting element is configured to have a second protrusion. The second protrusion advantageously extends substantially perpendicular to a support portion of the module connecting element. The second protrusion includes a second surface suitable for contacting the first surface of the gripping portion of the respective cover device gripping element. Advantageously, the second surface is substantially flat. Preferably, the second surface is parallel to the module's support surface. Advantageously, the first and second surfaces are parallel to each other. qqqv nn / cznzve / υιλι Once the cover device is mounted on the module, the first surface of the locking portion of each locking element will advantageously be in contact with the second surface of the gripping portion of the respective module connector. The connection between the first and second surfaces ensures a particularly stable connection between the cover device and the module. In some embodiments, the first protrusion of the hooking portion extends from the support portion into the longitudinal plane. In other words, the first protrusion of the hooking portion extends from the support portion in the direction toward the longitudinal axis of the lower surface. In other embodiments, the first protrusion of the engagement portion extends from the support portion in a direction opposite to the longitudinal plane. In other words, the first protrusion of the engagement portion extends from the support portion in the direction away from the longitudinal axis of the lower surface. The second protrusion of the module's connecting element preferably extends in the opposite direction to the first protrusion of the respective locking element of the cover device. Advantageously, if the first protrusion extends into the longitudinal plane, the second protrusion extends outward from the module. Advantageously, if the first protrusion extends away from the longitudinal plane, the second protrusion extends inward from the module. According to one embodiment of the invention, the hooking portion is configured as an opening formed in the support portion. Preferably, the opening has an access point that is substantially parallel to the transverse direction. Advantageously, the opening is a through-opening, i.e., it extends completely through the support portion. In other embodiments, the opening is not a through-opening, i.e., it extends only partially into the support portion. Preferably, the opening may be circular or elliptical, or it may be square. Advantageously, the locking elements of the cover device are configured as a slot. The locking portion configured as an opening is particularly suitable if the cover device is combined with a structure that can be attached to a support for electrical modules. In this case, the device is configured as a "blank button" that can serve, for example, to cover an empty slot in the support for electrical modules. qqq7 nn / cznzve / uili Preferably, at least one locking element of the cover device comprises a first beveled portion. The first beveled portion can be advantageously formed on the engagement portion, or even more advantageously on the first protrusion. In some embodiments, the first beveled portion can preferably be formed on the support portion, or even more preferably on the upper part of the support portion. The first beveled portion is suitable for further facilitating the connection between the locking element and the respective module connection element. Preferably, the first beveled portion interfaces with a second beveled portion of the respective module connection element during assembly of the cover device. According to another aspect of the invention, the covering device comprises first shaped elements that are configured to be combined with respective second shaped elements of the module. The first formed elements preferably comprise first insertion elements and first receiving elements; the second formed elements preferably comprise second insertion elements and second receiving elements. The first insertion elements are advantageously formed to be combined with a positive locking connection with the respective second receiving elements. Advantageously, the first receiving elements are formed to be combined with a positive locking connection with the respective second insertion elements. Advantageously, the first formed elements can be contained within the frame of the coverage device. In some embodiments, both the first insertion elements and the first reception elements protrude from the frame in the connection direction. In this case, the reception elements protrude less than the insertion elements and are positioned between two insertion elements. In other embodiments, the first insertion elements protrude advantageously from the frame in the connection direction and the receiving elements are advantageously configured as recesses formed in the frame. In some embodiments, the first insertion elements may be partially contained within the support portion of the engagement elements. qqq7 nn / cznzve / uili The first insertion elements are advantageously configured as projections or protrusions, preferably with a substantially parallelepiped shape. The first receiving elements are advantageously configured as recesses, openings, or housings, preferably square in shape. The second formed elements have a shape and dimensions that preferably complement the respective first formed elements. The shaped elements are particularly advantageous for improving the stability of the connection between the coverage device and the module. The shaped elements also facilitate the mounting of the coverage device. In some realizations, the frame may comprise both the first formed elements and, at least partially, the supporting portion. According to another aspect of the invention, a device for electrical installations is provided comprising a cover device according to the invention connected to a module for electrical installations such that the lower surface of the cover device is directed towards a support surface of the module. The module comprises connection elements, each of which is configured to be connected to the respective locking element of the cover device. Advantageously, the module includes a switch. Preferably, the module includes a button to which the coverage device is connected. In some embodiments, the electrical module can be connected to an electrical module holder. The holder preferably comprises insertion slots into which the electrical modules can be connected. Advantageously, the electrical module comprises a box-shaped element that can receive terminals for electrical cables and the switch operating mechanism, for example, with rocker or axial control. Preferably, the support surface of the module is in contact with the lower surface of the coverage device once the device is connected to the button or in general. Advantageously, the support surface has a shape and dimensions compatible with the underside of the covering device. Advantageously, the support surface is flat. In some embodiments, the support surface may be curved. The curvature may advantageously be similar to the curvature of the underside. If the underside is convex, the support surface will be convex, and vice versa. Advantageously, the support surface comprises two transverse sides and two longitudinal sides. Preferably, the support surface is square; even more preferably, it is substantially rectangular. Preferably, four connecting elements are present. Advantageously, the connecting elements are positioned in pairs in an aligned manner both longitudinally and transversely, defining a longitudinal and a transverse distance between them. These distances correspond substantially to the distances defined between the locking elements of the cover device. Advantageously, the longitudinal distance between the locking elements of the cover device is approximately the same as the longitudinal distance between the connecting elements. Advantageously, the transverse distance between the locking elements of the cover device is approximately the same as the transverse distance between the connecting elements of the module. Advantageously, a first pair of connecting elements is opposite and preferably symmetrical with respect to a second pair of connecting elements with respect to a plane extending in the connection direction and along the longitudinal axis of the support surface. Advantageously, a third pair of connecting elements is opposite and preferably symmetrical with respect to a fourth pair of connecting elements with respect to a plane extending in the connection direction and along the transverse axis of the support surface. Advantageously, the longitudinal axis of the support surface is equidistant from the longitudinal sides of the surface. Advantageously, the transverse axis of the support surface is equidistant from the transverse sides of the surface. The frame of the coverage device is preferably wrapped around the support surface of the module when the coverage device is attached to the module. Preferably, the device for an electrical installation comprises a damping device interposed between the module and the cover device. Advantageously, the damping device is placed on the module's support surface. The damping device preferably comprises a straight portion interposed between two curved portions. The damping device is preferably made of an elastomeric material. qqq7 nn / cznzve / uili The damping device is particularly advantageous for reducing actuation noise if the module comprises a button, particularly in the case of a button for a rocker control switch. Additional features and advantages of the invention will be better appreciated from the following detailed description of a preferred but non-limiting embodiment, which is illustrated by way of non-limiting example with reference to the accompanying drawings, in which: Figure 1 is a perspective view of a covering device according to a first embodiment; Figure 2 is a perspective view of a device for an electrical installation according to a first embodiment; Figure 3 is a cross-section of the device for an electrical installation according to the first embodiment; Figure 4 is a perspective view of the electrical module, to which the covering device can be connected according to the first embodiment; Figure 5 is a perspective view of a covering device according to a second embodiment; Figure 6 is a perspective view of a device for an electrical installation according to the second embodiment; Figure 7 is a cross-section of the device for an electrical installation according to the second embodiment; Figure 8 is a perspective view of the electrical module, to which the covering device can be connected according to the second embodiment; Figure 9 is a perspective view of a covering device according to a third embodiment; Figure 10 is a perspective view of a device for an electrical installation according to the third embodiment; Figure 11 is a cross-section of the device according to the third embodiment; Figure 12 is a perspective view of the module to which the coverage device can be connected according to the third embodiment. qqq7 nn / cznzve / uili In a first embodiment with reference to Figures 1 to 4, a cover device that can be removably attached to a module 100 is generally designated with 1. As can be seen in Figure 2, the following description will refer to the use of the cover device on a module 100 comprising a button 140, the button being shown more clearly in Figure 4. In any case, it will be appreciated that the same inventive concepts can also be applied to other types of electrical modules, such as plugs, sensors, bells, etc. However, a device for electrical installations, for example, a push-button cover system, is generally designated with 200. In the embodiment illustrated in the Figures, the modules 100 are connected to a rocker-control switch and can be connected to a wall-mountable electrical module holder. The holder preferably comprises insertion slots to which the electrical module 100 can be connected by means of hooks 144. The electrical module 100 comprises a box-shaped member 142, illustrated in Figure 4, which can receive terminals for electrical wires and the switch mechanism that is connected to the push button 140. Now, with reference again to Figure 1, the cover device 1 comprises a member 10 and a latching system 50. Member 10 includes a lower surface 20 that has a substantially rectangular shape and includes two transverse sides 15, 16 and two longitudinal sides 17, 18. In a Cartesian XYZ reference system that is associated with the covering device 1, the two transverse sides 15, 16 extend parallel to a transverse direction Y and the two longitudinal sides 17, 18 extend parallel to a longitudinal direction X. A connection direction Z is substantially perpendicular to the plane that is defined by the longitudinal direction X and the transverse direction Y. A longitudinal axis D and a transverse axis T are defined on the lower surface 20. The longitudinal axis D of the lower surface 20 is equidistant from the longitudinal sides 17, 18 and the transverse axis T of the lower surface 20 is equidistant from the transverse sides 15, 16. The lower surface 20 can interact with a support surface 120 of module 100, which can be seen in Figure 4. The coupling system 50 includes four coupling elements 51, 52, 53, 54. The coupling elements are positioned in alignment in pairs in both directions QQQ / nn / cznz / e / γΐΛΐ longitudinal X as in the transverse direction Y, defining between them a longitudinal distance L and a transverse distance W. A first pair of fastening elements 51,52 is advantageously opposite and symmetrical with respect to a second pair of fastening elements 53, 54 with respect to a longitudinal plane extending in the connection direction Z and along the longitudinal axis D of the lower surface 20. Advantageously, a third pair of engagement elements 52, 53 is opposite and symmetric with respect to a fourth pair of engagement elements 51, 54 with respect to a transverse plane extending in the connection direction Z and along the transverse axis T of the lower surface 20. Member 10 advantageously comprises an external surface 98 having a printed pattern 99 which can display, for example, a function that is associated with module 100, as illustrated, for example, in the embodiment illustrated in Figure 2. Now with reference again to Figure 1, member 10 comprises a frame 30 projecting from the lower surface 20. The frame 30 extends along the sides 15, 16, 17, 18 of the lower surface 20. The frame 30 includes two opposing longitudinal components 37, 38 and two opposing transverse components 35, 36. The frame 30 extends in the connection direction Z. Each coupling element 51, 52, 53, 54 comprises a coupling portion 60 and a support portion 70. The support portion 70 extends from the lower surface 20 in the connection direction Z. In some embodiments, the support portion 70 is configured substantially as a parallelogram. The support portion 70 is partially contained within the longitudinal component 37, 38 of the frame 30. Preferably, the support portion 70 comprises a lower zone 72 and an upper zone 73. The lower zone 72 is advantageously contained within the longitudinal component 37, 38 of the frame 30; the upper zone 73 advantageously projects from the longitudinal component 37, 38 of the frame 30 in the connection direction Z and away from the lower surface 20. The hook portion 60 is substantially at one end 71 of the support portion 70. qqq7 nn / cznz / β / υιλι The latching portion 60 is formed to interact with a gripping portion 160 of a respective connecting element 151, 152, 153, 154 of the button 140 or more generally of the module 100. Preferably, the latching portion is configured so that the cover device latches directly onto button 140. The engagement portion 60 is configured as a first protrusion 80 extending substantially perpendicularly from the support portion 70. The first protrusion 80 of the engagement portion 60 advantageously comprises a first surface 61 that can come into contact with a second surface 161 of the respective connecting element 151, 152, 153, 154 of module 100, which can be seen in Figures 3 and 4. The first surface 61 is substantially flat and is located in a plane that is substantially parallel to the plane defined by the longitudinal X direction and the transverse Y direction of the covering device 1. Still with reference to Figure 3, the gripping portion 160 of each connecting element 151, 152, 153, 154 of the button 140 or, more generally, of the module 100 is preferably configured to have a second protrusion 180 that includes the second surface 161 and that can come into contact with the first surface 61 of the latching portion 60 of the respective latching element 51, 52, 53, 54 of the cover device 1. Advantageously, the second surface 161 is substantially flat. Preferably, the second surface 161 is parallel to the first surface 61. Still in Figure 3, it can be observed how, once the assembly of the cover device 1 on the module 100 has been carried out, the first surface 61 of the latching portion 60 of the latching element 53 is in contact with the second surface 161 of the gripping portion 160 of the respective connecting element 153. The locking portion 60 has a first beveled portion 62 that can further promote the connection between the locking element and the respective connecting element of module 100. The first beveled portion 62 is advantageously formed on the first protrusion 80. The first beveled portion 62 interacts with a second beveled portion 162 of the respective connecting element of module 100 during the mounting of the cover device 1 on module 100. The first protrusion 80 of the engagement portion 60 of each engagement element of the cover device 1 extends from the support portion into the longitudinal plane qqqv nn / cznzve / uli. The second protrusion 180 of the gripping portion 160 of the connecting element of module 100 is oriented into the interior of module 100. In other words, the second protrusion 180 of the connecting element of module 100 extends in the opposite direction to the first protrusion 80 of the respective engagement element of the cover device 1. The coverage device 1 comprises first formed elements 90 that are formed to be able to be combined with second formed elements 190 respective of button 140 or more generally of module 100. The first formed elements 90 comprise first insertion elements 91 and first reception elements 92; the second formed elements 190 comprise second insertion elements 191 and second reception elements 192. The first insertion elements 91 are configured to be combined with a positive locking connection with respective second receiving elements 192. The first receiving elements 92 are configured to be combined with a positive locking connection with respective second insertion elements 191. Figure 1 shows first insertion elements 91 that are configured as protrusions 93 extending from the lower surface 20 and that can be inserted into second receiving elements 192 that are formed as openings 193 in the support surface of the button 140, which are visible in Figure 4, or more generally of the module 100. Figure 1 further shows the first insertion elements 91, which are partially contained within the longitudinal components 37, 38 of the frame 30 and are formed as projections 94 extending from the frame 30 in the connection direction Z. Preferably, three projections 94 are present for each longitudinal component 37, 38. The projections 94 can be moved to rest against a second receiving element 192, illustrated in Figure 4, which is formed as a peripheral surface 194 of the module 100. There are also present in the frame 30 first receiving elements 92 which also protrude from the longitudinal components 37, 38, but to a lesser extent with respect to the projections 94. Preferably, there are two receiving elements 92 for each longitudinal component 37, 38. Advantageously, each receiving element 92 is interposed between two projections 94. The first receiving elements 92 are shaped to receive second insertion elements 191. The second insertion elements 191 are preferably shaped as outwardly projecting fins 195. The support surface 120 of module 100 has a substantially rectangular shape and dimensions that are compatible with the lower surface 20 of the cover device 1. In some embodiments, the support surface 120 is defined on button 140. The support surface 120 has two transverse sides 115, 116, two longitudinal sides 117, 118, a longitudinal axis P and a transverse axis N. When the cover device 1 and the module 100 are connected, the lower surface 20 of the cover device 1 faces the support surface 120. Button 140, or more generally module 100, comprises four connection elements 151, 152, 153, 154, each of which is configured to be able to connect to the respective latching element 51, 52, 53, 54 of the coverage device 1. The connecting elements 151, 152, 153, 154 are positioned so that they define between them a longitudinal distance I and a transverse distance w. The distances I, w correspond substantially to the distances L, W that are defined between the fastening elements 51, 52, 53, 54 of the cover device 1. A first pair of connecting elements 151, 152 is opposite and preferably symmetrical with respect to a second pair of connecting elements 154, 153 with respect to a plane extending in the connection direction Z and along the longitudinal axis P of the support surface 120. A third pair of connecting elements 152, 153 is opposite and preferably symmetrical with respect to a fourth pair of connecting elements 151, 154 with respect to a plane extending in the connection direction Z and along the transverse axis N of the support surface 120. The longitudinal axis P of the support surface 120 is advantageously equidistant from the longitudinal sides 117, 118 of the surface 120. The transverse axis N of the support surface 120 is advantageously equidistant from the transverse sides 115, 116 of the surface 120. Each connecting element 151, 152, 153, 154 of module 100 comprises the support portion 170 and the gripping portion 160. The support portion 170 extends substantially perpendicular to the support surface 120. The support surface 170 advantageously extends from the support surface 120 into the box-shaped member qqq7 nn / cznzve / υιλι 142. The gripping portion 160 is preferably located near an end 162 of the support portion 170. The device 200 advantageously comprises a damping device 40 interposed between the button 140 and the cover device 1. The damping device 40 is advantageously positioned on the support surface 120. The damping device 40 preferably comprises a straight portion 41 interposed between two curved portions 42, 43. The damping device is preferably made of an elastomeric material. In a second embodiment with reference to Figures 5 to 8, a cover device that can be removably attached to a 500 module is generally designated as 400; however, a device for an electrical installation is generally designated as 600. The cover device 1 comprises a member 410 and a latching system 450. In preferred embodiments, the module 500 is connected to an axially controlled switch associated with a respective button 540, which can be connected to a support for electrical modules. The support preferably comprises insertion slots to which the electrical module 500 can be connected by means of hooks 544. The electrical module 500 comprises a box-shaped member 542 that can receive terminals for electrical cables and the switch mechanism that connects to the button 540. Member 410 includes a lower surface 420 having a substantially rectangular shape and including two transverse sides 415, 416 and two longitudinal sides 417, 418. In a Cartesian XYZ reference system associated with the covering device 400, the two transverse sides 415, 416 extend parallel to a transverse Y direction and the two longitudinal sides 417, 418 extend parallel to a longitudinal X direction. A connection direction Z is substantially perpendicular to the plane defined by the longitudinal X direction and the transverse Y direction. A longitudinal axis D' and a transverse axis T' are defined on the lower surface 420. The longitudinal axis D' of the lower surface 420 is equidistant from the longitudinal sides 417, 418 and the transverse axis T of the lower surface 420 is equidistant from the transverse sides 415, 416. The lower surface 420 can interact with a support surface 520 of the button 540 which can be seen in Figure 8. The 450 hitch system includes four hitch elements 451, 452, 453, 454. oca? nn / cznzve / uili The fastening elements are positioned so that they are aligned in pairs both in the longitudinal X direction and in the transverse Y direction, defining between them a longitudinal distance L' and a transverse distance W. A first pair of fastening elements 451, 452 is advantageously opposite and symmetrical with respect to a second pair of fastening elements 454, 453 with respect to a longitudinal plane extending in the connection direction Z and along the longitudinal axis D' of the lower surface 420. Advantageously, a third pair of engagement elements 452, 453 is opposite and symmetric with respect to a fourth pair of engagement elements 451, 454 with respect to a transverse plane extending in the connection direction Z and along the transverse axis T' of the lower surface 420. Member 410 comprises a frame 430 projecting from the lower surface 420. The frame 430 extends along the sides 415, 416, 417, 418 of the lower surface 420. The frame 430 includes two opposing longitudinal components 437, 438 and two opposing transverse components 435, 436. The frame 430 extends in the connection direction Z. Each attachment element 451, 452, 453, 454 comprises a support portion 470 and a support portion 470. The support portion 470 extends from the lower surface 420 in the connection direction Z. The support portion 470 is configured in a shape substantially similar to a parallelogram. The support portion 470 is substantially close to an end 471 of the support portion 470. The support portion 470 is formed to interact with a gripping portion 560 of a respective connecting element 551, 552, 553, 554 of the button 540. It will be noted that reference will be made below to an embodiment in which the coverage device is fixed to button 540 of module 500. However, if the coverage device were to be used in modules of a different type, it could be fixed to other portions of module 500, similarly to what is described in the previous embodiment. The support portion 470 is configured as a first protrusion 480 extending substantially perpendicularly from the support portion 470. The first protrusion 480 of the support portion 470 advantageously comprises a first surface 461 that can come into contact with a second surface 561 of the respective connecting element 551, 552, 553, 554 of the button 540. The first surface 461 is substantially flat and is located in a plane that is substantially parallel to the plane defined by the longitudinal X direction and the transverse Y direction of the covering device 400. Preferably, the gripping portion 560 of each connecting element 551, 552, 553, 554 of the button 540 is configured to have a second protrusion 580 that includes the second surface 561, which can contact the first surface 461 of the support portion 470 of the respective latching element 451, 452, 453, 454 of the cover device 400. Advantageously, the second surface 561 is substantially flat. Preferably, the second surface 561 is parallel to the first surface 461. Figure 7 shows how, once the cover device 400 has been mounted on the button 540, the first surface 461 of the support portion 470 of the latching element 453 is in contact with the second surface 561 of the gripping portion 560 of the respective connecting element 553 of the button 540. The support portion 470 has a first beveled portion 462 that can further promote the connection between the latching element and the respective connecting element of the button 540. The first beveled portion 462 is advantageously formed in the first protrusion 480. The first beveled portion 462 interacts with a second beveled portion 562 of the respective connecting element of the button 540 during the mounting of the cover device 400 on the button 540. The first protrusion 480 of the support portion 470 of each locking element of the cover device 400 extends from the support portion 470 in a direction opposite to the longitudinal plane. The second protrusion 580 of the gripping portion 560 of the button's connecting element 540 is oriented inward toward the button 540. In other words, the second protrusion 580 of the button's connecting element 540 extends in the opposite direction to the first protrusion 480 of the respective locking element of the cover device 400. The coverage device 400 comprises first formed elements 490 that are formed to be able to be combined with second formed elements 590 respective to the button 540. qqq7 nn / cznzve / uili The first formed elements 490 comprise first insertion elements 491; the second formed elements 590 comprise second reception elements 592. Figure 5 shows a first insertion element 491 that is partially contained within the frame 430. In particular, the first insertion element 491 is configured as a protrusion 494 extending from the longitudinal component 437 of the frame 430 in the connection direction Z. The protrusion 494 is shaped to be inserted into a second receiving element 592, which is formed as a channel 594 obtained on the longitudinal side 518 of the support surface 520 of the button 540, as shown in Figure 8. In particular, the channel 594 is constructed close to the transverse axis N' of the support surface 520. Figure 5 further shows the first insertion elements 491, which are configured as projections 493 extending from the lower surface 420. The projections 493 are preferably partially contained within the support portion 470 of the engagement elements. The projections 493 are shaped to be inserted into second receiving elements 592, which are formed as openings 593 in the support surface of the module, as shown in Figure 8. Preferably, the openings 593 can receive the engagement elements of the cover device 400. The support surface 520 of the button 540 has a substantially rectangular shape and dimensions that are compatible with the lower surface 420 of the cover device 400. The support surface 520 has two transverse sides 515, 516, two longitudinal sides 517, 518, a longitudinal axis P' and a transverse axis N'. When the cover device 400 and the button 540 are connected, the lower surface 420 of the cover device 400 faces the support surface 520. Button 540 comprises four connection elements 551, 552, 553, 554, each of which is configured to be able to connect to the respective latching element 451, 452, 453, 454 of the coverage device 400. The connecting elements 551, 552, 553, 554 are positioned so that they define between them a longitudinal distance I' and a transverse distance w'. The distances I', w' correspond substantially to the distances L', W that are defined between the fastening elements 451, 452, 453, 454 of the cover device 400. A first pair of connecting elements 551, 552 is opposite and preferably symmetric with respect to a second pair of connecting elements 554, 553 with respect to a plane extending in the connection direction Z and along the longitudinal axis P' of the support surface 520. A third pair of connecting elements 552, 553 is opposite and preferably symmetrical with respect to a fourth pair of connecting elements 551, 554 with respect to a plane extending in the connection direction Z and along the transverse axis N' of the support surface 520. The longitudinal axis P' of the support surface 520 is advantageously equidistant from the longitudinal sides 517, 518 of the surface 520. The transverse axis N' of the support surface 520 is advantageously equidistant from the transverse sides 515, 516 of the surface 520. The connecting elements 551, 552, 553, 554 of the button 540 are advantageously placed in the region of the openings 593 that can receive the respective latching elements of the cover device 400. Each opening 593 is preferably formed to receive both the first formed elements 491, which are formed as projections 493, and the latching elements of the cover device 400. Each connecting element 551, 552, 553, 554 of the button 540 comprises the support portion 570 and the gripping portion 560. The support portion 570 extends substantially perpendicularly to the support surface 520. The support portion 570 advantageously extends from the support surface 520 into the box-shaped member 542. The gripping portion 560 is preferably located near an end 562 of the support portion 570. In a third embodiment, with reference to Figures 9 to 12, an electrical installation device configured as a "blank button" is generally designated 900. In this embodiment, the device also comprises an electrical installation module 800 that can be connected to a wall-mountable electrical module holder. The device 900 comprises a cover device 700 that can be detachably connected to a module 800. In this embodiment, the module 800 is formed as a structure 842 that is not connected to a switch. The structure 842 can be connected to an electrical module holder. The holder preferably comprises insertion slots to which the structure 842 can be connected by means of hooks 844. The cover device 700 comprises a member 710 and a latching system 750. Member 710 includes a lower surface 720 having a substantially rectangular shape and comprising two transverse sides 715, 716 and two longitudinal sides 717, 718. In a Cartesian XYZ reference system associated with the covering device 700, the two transverse sides 715, 716 extend parallel to a transverse Y direction and the two longitudinal sides 717, 718 extend parallel to a longitudinal X direction. A connection direction Z is substantially perpendicular to the plane defined by the longitudinal X direction and the transverse Y direction. A longitudinal axis D and a transverse axis T are defined on the lower surface 720. The longitudinal axis D of the lower surface 720 is equidistant from the longitudinal sides 717, 718, and the transverse axis T of the lower surface 720 is equidistant from the transverse sides 715, 716. The lower surface 720 can interact with a support surface 820 of module 800, which can be seen in Figure 12. The 750 coupling system includes four coupling elements 751, 752, 753, 754. The coupling elements are positioned so that they are aligned in pairs in both the longitudinal X and transverse Y directions, defining between them a longitudinal distance L and a transverse distance W'. A first pair of fastening elements 751, 752 is advantageously opposite and symmetrical with respect to a second pair of fastening elements 753, 754 with respect to a longitudinal plane extending in the connection direction Z and along the longitudinal axis D of the lower surface 720. Advantageously, a third pair of engagement elements 752, 753 is opposite and symmetric with respect to a fourth pair of engagement elements 751, 754 with respect to a transverse plane extending in the connection direction Z and along the transverse axis T of the lower surface 720. Member 710 comprises a frame 730 that protrudes from the lower surface 720. Frame 730 extends along sides 715, 716, 717, 718 of the lower surface 720. Frame 730 includes two opposing longitudinal components 737, 738 and two opposing transverse components 735, 736. Frame 730 extends in the connection direction Z. Both transverse components 735, 736 have a beveled zone 781 that is formed near the longitudinal axis D in each of the components 735, 736. Each coupling element 751, 752, 753, 754 comprises a coupling portion 760 and a support portion 770. qqq7 nn / cznzve / uili The support portion 770 is partially contained within the longitudinal component 737, 738 of the frame 730. In particular, a lower zone 772 of the support portion 770 is partially contained within the longitudinal component 737, 738 of the frame 730, while an upper zone 773 of the support portion 770 protrudes from the longitudinal component 737, 738 of the frame 730. Preferably, the lower zone 772 protrudes from the longitudinal component 737, 738 in the transverse Y direction and into the interior of the cover device 700. Advantageously, the upper zone 773 has connectors. The engagement portion 760 is formed to interact with a gripping portion 860 of a respective connecting element 851, 852, 853, or 854 of module 800. The engagement portion 760 is configured as an opening 761 formed in the support portion 770 and having an axis 764 that is substantially parallel to the transverse Y direction. The opening 761 is preferably a through opening or extends completely through the support portion 770. The engagement elements 751, 752, 753, and 754 of the cover device 700 are configured as a slot. The opening 761 is formed as an ellipse. Figure 11 shows how, once the cover device 700 has been mounted on the module 800, the latching portion 760 of the latching element 753, which is shaped like an opening 761, receives the gripping portion 860 of the respective connecting element 853 of the module 800. The engagement portion 760 of the engagement element 753 has a first beveled portion 762 that can further promote the connection between the engagement element and the respective connecting element of module 800. The first beveled portion 762 is advantageously formed in the upper area 773 of the support portion 770. The first beveled portion 762 interacts with a second beveled portion 864 of the respective connecting element of module 800 during the assembly of the cover device 700 onto the module 800. The cover device 700 comprises first shaped elements 790 that are formed to be combined with respective second shaped elements 890 of module 800. The first formed elements 790 comprise first insertion elements 791; the second formed elements 890 comprise second reception elements 892. Figure 9 shows a first insertion element 791 that is partially contained within the frame 730. In particular, the first insertion element 791 is configured as a protrusion 794 extending from the lower surface 720 in the connection direction Z. The protrusion 794 is shaped to be inserted into a second receiving element 892, which is formed as a receiving member 894 obtained near the longitudinal sides 817, 818 of the support surface 820 of the module 800, as shown in Figure 12. In particular, the receiving member 894 is constructed near the transverse axis N of the support surface 820. Preferably, the receiving member 894 is interposed between a pair of projections 895 extending from the support surface 820. The projections 895 have preferably a bevel that can guide the insertion of the protrusion 794 into the receiving member 894. The support surface 820 of module 800 has a substantially rectangular shape and dimensions compatible with the lower surface 720 of the cover device 700. The support surface 820 has two transverse sides 815, 816, two longitudinal sides 817, 818, a longitudinal axis P, and a transverse axis N. When the cover device 700 and module 800 are connected, the lower surface 720 of the cover device 700 faces the support surface 820 of module 800. Module 800 comprises four connection elements 851, 852, 853, 854, each of which is configured to be able to connect to the respective latching element 751, 752, 753, 754 of the coverage device 700. The connecting elements 851, 852, 853, 854 are positioned so that they define between them a longitudinal distance I and a transverse distance w. The distances I, w correspond substantially to the distances L, W' that are defined between the locking elements 751, 752, 753, 754 of the cover device 700. A first pair of connecting elements 851, 852 is opposite and preferably symmetrical with respect to a second pair of connecting elements 854, 853 with respect to a plane extending in the connection direction Z and along the longitudinal axis P of the support surface 820. A third pair of connecting elements 852, 853 is opposite and preferably symmetrical with respect to a fourth pair of connecting elements 851, 854 with respect to a plane extending in the connection direction Z and along the transverse axis N of the support surface 820. The longitudinal axis P of the support surface 820 is advantageously equidistant from the longitudinal sides 817, 818 of the surface 820. QQQvnn / cznz / e / YiAi The transverse axis N of the support surface 820 is advantageously equidistant from the transverse sides 815, 816 of the surface 820. Each connecting element 851, 852, 853, 854 of module 800 comprises a support portion 870 and a gripping portion 860. The support portion 870 extends substantially perpendicular to the support surface 820. The gripping portion 860 is located on the longitudinal sides 817, 818. The gripping portion 860 is configured as a second protrusion 880 extending substantially perpendicular to the support portion 870 and away from the longitudinal axis P of the support surface 820. The invention thus solves the proposed problem, while also providing a number of advantages. In particular, the cover device is especially versatile and can be easily attached to a button so that it can be removed, while also providing a particularly stable attachment system that withstands the mechanical loads that occur during the assembly and disassembly of the cover device 15 on / from the button.

Claims

1. A cover device (1; 400; 700) that can be removably connected to a module (100; 500; 800) for an electrical installation, the module being wall-mountable, the cover device (1; 400; 700) comprising a member (10; 410; 710) and a fastening system (50; 450; 750), the member (10; 410; 710) including a lower surface (20; 420; 720) that is suitable for interacting with the module (100; 500; 800) and comprising two transverse sides (15, 16; 415, 416; 715, 716) and two longitudinal sides (17, 18; 417, 418; 717, 718), and a frame (30; 430; 730) extending from the lower surface (20: 420; 720) in a connection direction (Z) and extending along the sides (15, 16, 17, 18; 415, 416, 417, 418; 715, 716, 717, 718) of the lower surface (20: 420; 720), including the frame (30; 430; 730), two opposing longitudinal components (37, 38; 437, 438; 737, 738), and two opposing transverse components (35, 36;435, 436; 735, 736), including the attachment system (50; 450; 750) attachment elements (51, 52, 53, 54; 451, 452, 453, 454; 751, 752, 753, 754) that are situated near the longitudinal sides (17, 18; 417, 418; 717, 718) of the lower surface (20: 420; 720) so that they are opposite in pairs with respect to a longitudinal plane, the longitudinal plane extending in the connection direction (Z) and along a longitudinal axis (D; D'; D”) of the lower surface (20: 420; 720), each attachment element (51, 52, 53, 54; 451, 452, 453, 454; 751, 752, 753, 754) elastically deformable and shaped to allow connection with a respective connecting element (152, 153, 154, 155; 551, 552, 553, 554; 851, 852, 853, 854) of the module (100; 500; 800).; 2. A cover device (1; 400; 700) according to the preceding claim, wherein each engagement element (51, 52, 53, 54; 451, 452, 453, 454; 751, 752, 753, 754) comprises: a support portion (70; 470; 770) extending from the lower surface (20; 420; 720) in the connection direction (Z) and an engagement portion (60; 460; 760) that is suitable for interacting with a gripping portion (160; 560) of a connecting element (152, 153, 154, 155; 551, 552, 553, 554; 851, 852, 853, 854) respective of the module (100; 500; 800).

3. A covering device (1; 700) according to the preceding claim, wherein the support portion (70; 770) is at least partially included in the frame (30; 730).

4. A cover device (1; 400) according to claim 2 or 3, wherein the engagement portion (60; 460) is configured as a first protrusion (80; 480) extending from the support portion (70; 470) and comprising a first surface (61; 461) suitable for contacting a second surface (161; 561) of a respective module connection element (100; 500).

5. A cover device (1) according to the preceding claim, wherein the first protrusion (80) of the latching portion (60) extends from the support portion (70) into the longitudinal plane.

6. A cover device (400) according to claim 4, wherein the first protrusion (480) of the latching portion (460) extends from the support portion (470) and in the opposite direction with respect to the longitudinal plane.

7. A cover device (700) according to claim 2 or 3, wherein the latching portion (760) is configured as an opening (761) that is formed in the support portion (770).

8. A cover device (1; 400; 700) according to any one of the preceding claims, wherein at least one locking element (51, 52, 53, 54; 451, 452, 453, 454; 751, 752, 753, 754) comprises a first beveled portion (62; 462; 762).

9. A coverage device (1; 400; 700) according to any one of the preceding claims, wherein the module (100; 500; 800) comprises a button (140; 540).

10. A cover device (1; 400; 700) according to any one of the preceding claims, wherein the member (10; 410; 710) is made of rigid material.

11. A cover device (1; 400; 700) according to any one of the preceding claims, wherein the cover device is made of a polymeric material.

12. A device (200; 600; 900) for an electrical installation comprising a cover device (1; 400; 700) according to any one of the preceding claims connected to a module (100; 500; 800) such that the lower surface (20; 420; 720) of the cover device (1; 400; 700) is directed towards a support surface (120; 520; 820) of the module (100; 500; 800), the module (100; 500; 800) comprising connection elements (152, 153, 154, 155; 551, 552, 553, 554; 851, 852, 853, 854), each of which is configured to be connected to the respective element of the attachment (51, 52, 53, 54; 451, 452, 453, 454; 751, 752, 753, 754) of the cover device (1; 400; 700). qqq7 nn / cznzve / uli 13. A device (200; 600; 900) for electrical installation according to the preceding claim, comprising a damping device (40) interposed between the module (100) and the cover device (1).

14. A device (200; 600; 900) for an electrical installation according to claims 12 or 13, wherein the cover device (1) is fixed directly to the module (100; 500; 800).

15. A device (200; 600; 900) for electrical installation according to any one of claims 12 to 14, wherein the module (100; 500; 800) comprises a button (140; 540).

16. A device (200; 600; 900) for an electrical installation according to claim 15, wherein the cover device (1; 400; 700) is directly connected to the button (140; 540).

17. A device (200; 600; 900) for an electrical installation according to claims 15 or 16, wherein the module (100; 500; 800) comprises a switch that is actuated by the button (140; 540).

18. A device (200; 600; 900) for an electrical installation according to any one of claims 12 to 17, wherein the module (100; 500; 800) can be connected to a support for electrical modules, said support preferably comprising insertion slots for connecting the module (100; 500; 800) by means of hooks.

19. A device (200; 600; 900) for an electrical installation according to any one of claims 12 to 18, wherein the module (100; 500) comprises a box-shaped member (142; 152) that can receive electrical wire terminals and a switch mechanism.

20. A device (200; 600; 900) for an electrical installation according to any one of claims 12 to 14 when dependent on claim 15, wherein the cover device is connected to the button to move together with the button.

Images