Device for mechanically fastening a module to a wall of a device having a mounting mount for

Abstract

The invention relates to a device for mechanically fastening a module to a wall of a device having a mounting opening for receiving the module, comprising: a module carrier having a plate-shaped base body for insertion into the mounting opening and a first snap element on the outer circumference of the base body; a module arranged on the front side of the base body and fixed on a module carrier; a support plate for supporting on the front side of the wall, which is connected to the module carrier or module and protrudes outward parallel to the main plane of the base body; a latching frame having a frame opening for mounting the rear of the base body and a second latching element on the inner circumference; at least one spring element which is configured and arranged to elastically support the latching frame on the rear side of the wall beside the mounting opening and / or to elastically support the support plate on the front side of the wall, the first and second latching elements being configured to engage with each other when the base body is inserted into the frame opening, a distance being present between the rear side of the support plate and the front side of the latching frame, and the first and second latching elements being configured to engage with each other when the base body is inserted into the frame opening, and a distance being present between the rear side of the support plate and the front side of the latching frame. The edge area of the wall part, which surrounds the mounting opening, is accommodated.

Description

Technical Field

[0001] The invention relates to a device for mechanically fixing a module on a wall of a device, wherein the wall has a mounting opening for accommodating the module. Background Art

[0002] Laboratory equipment, such as shakers, incubators, circulators, thermostatic stirrers, centrifuges, automatic devices and equipment for other application areas, usually have a user interface (UI) module that is installed in a mounting opening in the wall of the equipment and fixed to the wall. The UI module can be, for example, a combination of a membrane keyboard, a touch screen, a PCBA (printed circuit board assembly) and an input element such as a knob or a membrane key.

[0003] It is known to fix the UI module in the installation opening by screwing and / or gluing in the installation position. It is also known to clip the module directly into the installation opening of the device.

[0004] The structural design of the wall with the installation opening of the module and the device is individually implemented and customized within the development scope of the corresponding device. This customization will lead to correspondingly high expenditure for shaping, testing and optimization in any structure.

[0005] The known screw connections of the modules are detachable connections, which are designed differently in many cases. Therefore, a large number of tools need to be prepared for production and maintenance. In addition, the disadvantage of the screw connection is that in order to ensure access to the screw connection structure for the screw tool, the structural space is lost.

[0006] The disadvantage of gluing the module to the housing is that some time (up to several hours) has to elapse after gluing before the final bonding result is achieved, which can be inconvenient during installation and maintenance. Furthermore, reliable gluing requires special manufacturing know-how. With the gluing, disassembly cannot be carried out non-destructively. If necessary, in the event of damage, the entire device part with the UI module must be replaced in order to rectify the fault.

[0007] The direct snap-in connection of the module to the device requires an exact adaptation of the module and the mounting opening, including tolerances and tools, which results in a high level of development effort. Any injection mold for a device component with a mounting opening requires complex adaptation to the design of the tool or UI module in order to integrate the UI module. This disadvantage occurs especially in the case of small and medium-sized batches.

[0008] CN 108800734 A describes a touch panel display, which is fixed to a bracket by a snap hook. The bracket is installed in an opening of a housing cover, and the snap hook is snapped with a snap receiving portion of the housing cover. The snap between the bracket and the housing cover requires that the components are precisely matched with each other. Summary of the invention

[0009] Starting from this, the object of the invention is to provide a device for mechanically fixing a module on a wall of a device having a mounting opening for accommodating the module, in which the outlay for matching the components to one another and the outlay for tools required for production are reduced.

[0010] According to the invention, this object is achieved by a device according to claim 1. Advantageous embodiments of the device according to the invention are given in the dependent claims and in the description.

[0011] The device according to the invention for mechanically fixing a module on a wall of a device having a mounting opening for accommodating the module comprises:

[0012] a module carrier having a plate-shaped base body for being inserted into the installation opening and at least one first snap-in element on the outer circumference of the base body,

[0013] a module, which is arranged on the front side of the base body and is fixed to the module carrier,

[0014] a support plate, the support plate being used to be supported on the front side of the wall with the mounting opening, the support plate being connected to the module carrier or to the module and protruding outwardly parallel to the main plane of the base body,

[0015] a latching frame having a frame opening for inserting the rear portion of the base body and at least one second latching element on the inner circumference,

[0016] at least one spring element, which is designed and arranged to elastically support the latching frame on the rear side of the wall next to the installation opening and / or to elastically support the support plate on the front side of the wall,

[0017] The first and second snap-in elements are configured to snap into each other when the base body is inserted into the frame opening, and there is a gap between the rear side of the support plate and the front side of the locking frame to accommodate the edge area of ​​the wall surrounding the installation opening.

[0018] In the device according to the invention, the module carrier can be inserted into the installation opening of the device with its plate-shaped base body. The module is arranged on the front side of the base body and fixed on the module carrier. The module or the module carrier has a support plate, with which the module carrier or the module can be supported on the front side of the wall of the device with the installation opening. The locking frame has a frame opening, into which the rear part of the base body can be inserted. The device comprises at least one spring element, which is constructed and arranged so that the locking frame is elastically supported on the rear side of the wall next to the installation opening and / or the support plate is elastically supported on the front side of the wall. The module carrier has at least one first locking element on the outer periphery of the base body, and the locking frame has at least one second locking element on the inner periphery. The first locking element and the second locking element are constructed so that the first locking element and the second locking element can be locked with each other when the base body is inserted into the frame opening. When the first locking element and the second locking element are locked with each other, there is a spacing between the rear side of the support plate and the front side of the locking frame to accommodate the edge area of ​​the wall surrounding the installation opening. This makes it possible to first insert the module carrier into the installation opening and then insert the rear part of the latching frame (base) into the frame opening, or to put the latching frame with the frame opening onto the rear part of the base. When the first latching element and the second latching element are latched to each other, the edge area of ​​the wall surrounding the installation opening is arranged between the rear side of the support plate and the front side of the latching frame. Thus, the support plate is supported on the front side of the wall and the latching frame is supported on the rear side of the wall via the spring element, and / or the support plate is supported on the front side of the wall via the spring element and the latching frame is supported on the rear side of the wall.

[0019] The device is fixed to the device by embedding the module carrier in the installation opening and clamping the support plate and the locking frame on the front and rear sides of the wall via spring elements. Different elastic deformations of the spring elements can compensate for tolerances between the components, that is, between the module carrier, the support plate, the locking frame and the wall. The exact match between the module carrier and the installation opening is not important, because the module carrier only needs to be installed in the installation opening with the matrix and the support plate covers the gap between the matrix and the installation opening. Large tolerances can be allowed for the wall thickness of the wall and the installation opening in the housing. The tolerance of the wall thickness is compensated by the elastic deformation of the spring element, and the gap left between the wall opening and the matrix embedded in the wall opening due to the tolerance of the wall opening is covered by the support plate. The accuracy is determined by the module carrier and the locking frame of the device. The snap connection between the module carrier and the locking frame can be designed to be releasable, so that it can be disassembled. The snap connection can be constructed so that each of the components can be installed on the wall and / or removed without special tools.

[0020] The device can be configured so that the module carrier and the locking frame or one of the two components described above can be used for different devices. Thus, more universal parts can be used for different devices. If one of the two components must be specially adapted to different devices, only a few changes are required if necessary. For example, this is the case when the module carrier must be specially adapted to a set module or device. In addition, a relatively simple and fast installation and maintenance can also be achieved by the snap connection. Since the tolerance compensation is achieved by supporting the spring element on the wall of the device, the force between the first snap element and the second snap element will not be affected or only slightly affected by the tolerance compensation.

[0021] By using common parts where possible, the construction design outlay for newly developed equipment can be reduced.

[0022] When the support plate is connected to the module carrier, the clamping force is conducted via the module carrier and kept away from the module. This may be advantageous in particular for sensitive modules, for example for displays with cover glass. When the support plate is connected to the module, the design can be improved thereby, because the module fits tightly against the housing wall and is not surrounded by the edge of the support plate of the module carrier. According to another embodiment, the support plate is integrally connected to the module carrier or integrally connected to the module. Manufacturing and assembly can thereby be simplified. When formed integrally with the module carrier, the support plate can be configured in the form of a frame, which is connected to a rearwardly protruding base on the inner circumference. The frame can define a recess for accommodating the module. When formed integrally with the module, the support plate can be configured as a laterally protruding edge area of ​​the cover glass of a touch panel or other module.

[0023] According to another embodiment, the module carrier and the locking frame are rectangular or round. Modules for use in devices are usually configured in rectangular or round shapes, and the rectangular or round configuration of the device enables the device to be well adapted to the device and fixed on the device in a space-saving manner.

[0024] According to another embodiment, the module carrier has a recess on the front side and the module is inserted into the recess. The recess enables the module to be placed on the module carrier in a protected and space-saving manner. According to another embodiment, the recess is a window in the support plate and / or a recess in the base body of the module carrier.

[0025] According to another embodiment, the module is connected to the module carrier by an adhesive connection. This makes it possible to fix the module to the module carrier without stress. The module can also be fixed to the module carrier in other ways, for example by clamping the module to the module carrier, by screwing the module to the module carrier or by fastening the module to the module carrier using a fixing ring or other fixing means. Different fixing methods can also be combined.

[0026] According to another embodiment, the base body has a sheet metal part with ribs. This allows a stable base body to be achieved with a small amount of material. A stable base body can prevent damage to the module due to forces acting on the module carrier.

[0027] According to another embodiment, the module is a display, a monitor, a keyboard, a touch screen, another UI module or a transparent disk. The module can be configured as a touch panel in particular. The transparent disk can be an observation window, for example a disk on a centrifuge.

[0028] According to another embodiment, an electronic circuit board is arranged on the rear side of the base body. The electronic circuit board may be an electronic control device and / or a power supply device for an electronic module fixed to the module carrier.

[0029] According to another embodiment, a screw boss protrudes backwards from the rear side of the base body, and the electronic circuit board is fixed to the screw boss at the screw hole by means of a screw. This achieves a reliable and easy-to-install and maintain fixation of the electronic circuit board. According to another embodiment, a positioning boss protrudes backwards from the rear side of the base body, and the electronic circuit board is guided on the positioning boss at the positioning hole. This achieves an accurate alignment of the electronic circuit board to the module carrier.

[0030] According to another embodiment, the module carrier has at least one snap hook protruding backwards on the outer circumference, and the locking frame has at least one snap receiving portion for the snap hook on the inner circumference, and / or the locking frame has at least one snap hook protruding forwards on the inner circumference, and the module carrier has at least one snap receiving portion for the snap hook on the outer circumference. The snap hook can be formed only on the module carrier, and the snap receiving portion can be formed only on the locking frame, or vice versa. The two components can also have both snap hooks and snap receiving portions, where the arrangement of the snap hooks and the snap receiving portions match each other, so that the snap hook of one component can always snap with the snap receiving portion of the other component.

[0031] According to another embodiment, the latching frame has latching hooks and the module carrier has latching receptacles. In principle, the protruding latching hooks are more sensitive latching elements than the latching receptacles, since the latching hooks are laterally deflected before latching. The advantage of arranging the latching hooks on the latching frame is that the more sensitive latching elements are arranged on a component that is particularly well suited as a universal part for use on different devices and for economical production in large quantities.

[0032] According to another embodiment, the snap hook has a single-arm or double-arm lever, which has a first lever arm with a hook for snapping into the snap receptacle and a second lever arm for releasing the snap connection with the snap receptacle. This is advantageous for maintenance, since it facilitates disassembly without the use of tools. Maintenance personnel can open the device to operate the lever. According to another embodiment, the lever has a second lever arm at the rear end. This makes it easier to operate the lever when the device is already opened.

[0033] According to another embodiment, the module carrier and / or the latching frame have snap-on receptacles (snap-on receptacles) at a plurality of latching positions arranged one behind the other in a direction perpendicular to the plate-shaped base body. This allows the module carrier and the latching frame to latch with each other in different latching positions in which there are different spacings between the rear side of the support plate and the front side of the latching frame. This allows the device to be used with different devices in which the wall with the mounting opening has different wall thicknesses. In addition, greater tolerances in the wall thickness of the device can be covered by different latching levels.

[0034] According to another embodiment, the module carrier has a plurality of first snap-in elements on the outer circumference and the latching frame has a plurality of second snap-in elements on the inner circumference. As a result, the forces acting in the individual snap-in connections during the snap-in can be kept low and a uniform clamping of the device to the wall of the device is achieved. According to another embodiment, the module carrier has only a single first snap-in element and the latching frame has only a single second snap-in element, in which case the first snap-in element completely surrounds the outer circumference of the module carrier and the second snap-in element completely surrounds the inner circumference of the latching frame.

[0035] According to another embodiment, the module carrier has a plurality of symmetrically arranged first snap-in elements on the outer circumference, and the locking frame has a plurality of symmetrically arranged second snap-in elements on the inner circumference, thereby facilitating uniform clamping of the device on the apparatus.

[0036] According to another embodiment, the spring element protrudes from the front side of the locking frame. By combining the spring element and the locking frame into a single component, installation and removal can be facilitated. By arranging the spring element on the rear side of the wall, the gap between the device and the wall caused by tolerance compensation can be hidden.

[0037] According to another embodiment, the latch frame has at least one spring element designed as a bending spring on the front side, which is inclined at an acute angle to the frame plane. Designing the spring element as an inclined bending spring is particularly advantageous in terms of manufacturing technology when it is manufactured from plastic by injection molding.

[0038] According to another embodiment, the latching frame has a plurality of symmetrically arranged spring elements. This is advantageous for uniform contact on the periphery of the mounting opening and for compensating for different manufacturing tolerances on the periphery of the mounting opening. The invention also includes embodiments in which the latching frame has only a single spring element, which can be formed, for example, by a circumferential, forwardly protruding, optionally outwardly inclined, elastic lip on the front side of the latching frame.

[0039] According to another embodiment, the support plate has the spring element, which is formed, for example, by a circumferential, optionally outwardly inclined, rearwardly protruding elastic lip on the outer circumference of the support plate, or by a support plate that is generally designed as a disc spring made of elastic material.

[0040] According to another embodiment, the spring element is formed by a ring made of an elastomer, which is positioned between the latch frame and the rear side of the wall or between the support plate and the front side of the wall. The ring can be guided, for example, on the periphery of the base body and positioned on the rear side of the wall or on the front side of the wall. The ring can be designed as a rectangular ring or a circular ring. In principle, an O-ring can be used for this purpose.

[0041] According to another embodiment, the snap hook is formed integrally with the module carrier or the latch frame, and / or the snap receptacle is formed integrally with the latch frame or the module carrier, and / or the spring element is formed integrally with the latch frame or the support plate. The integral formation of the structure with the component facilitates production and assembly. In particular, it can be produced from plastic by injection molding. The module carrier and the latch frame are preferably both integrally injection molded from plastic.

[0042] According to another embodiment, the module carrier is made of plastic or metal, and / or the locking frame is made of plastic. According to another embodiment, the module carrier is made of aluminum die casting or milled metal. According to another embodiment, the module carrier is injection molded from plastic and / or the locking frame is injection molded from plastic (but it can also be a two-component injection molded part consisting of a hard component and a soft component to achieve a sealing function). According to another embodiment, the module carrier is integrally formed and / or the locking frame is integrally formed. According to another embodiment, the wall and / or the housing of the device having the wall are made of metal or plastic. As plastic, TSG (thermoplastic foam injection molding material) is used, for example. According to a second embodiment, the housing is injection molded from plastic.

[0043] In the present application, the expressions "front" and "rear" and terms including these directional expressions, such as "front side" and "rear side", relate to the arrangement of the device on the outer wall of the device, in which arrangement the module is arranged on the outer side of the device, in which case the outer side of the device is visible to an observer observing the device from the outside, and the locking frame is arranged on the inner side of the outer wall of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The device according to the present invention will be described in detail below with reference to the accompanying drawings of the embodiments. In the drawings:

[0045] Figure 1 A module carrier according to a first embodiment of the present invention is shown in a perspective view from the rear obliquely;

[0046] Figure 2 The locking frame of the same device is shown in a perspective view from the oblique front;

[0047] Figure 3 The same device is shown in a perspective view from the oblique rear when it is initially installed on the installation opening of the device;

[0048] Figure 4 The same device is shown in a perspective view from the oblique rear after the module carrier has been inserted into the installation opening and before the module carrier is snapped into the locking frame;

[0049] Figure 5 The same device is shown in a perspective view from the rear obliquely, clipped onto the device with a snap-on module carrier and a snap-on locking frame;

[0050] Figure 6 A further embodiment of the invention is shown in a transverse section perpendicular to the wall in a first locking phase;

[0051] Figure 7The same device is shown in a transverse section perpendicular to the wall in a second locking phase;

[0052] Figure 8 The same device is shown in a transverse section perpendicular to the wall in a third locking phase;

[0053] Fig. 9 A module carrier according to a third embodiment of the present invention is shown in a perspective view from the rear obliquely;

[0054] Fig.10 The locking frame of the same device is shown in a perspective view from the oblique front;

[0055] Fig.11 The same device is shown in a perspective view from the oblique rear, when installation begins at the installation opening of the device;

[0056] Fig.12 The same device is shown in a perspective view from the oblique rear after the module carrier has been inserted into the installation opening and before the latching frame is latched with the module carrier;

[0057] Fig.13 The same arrangement is shown in a perspective view obliquely from the rear, clipped onto the device with a snap-on module carrier and a snap-on frame. DETAILED DESCRIPTION

[0058] according to Figure 1 As shown, the module carrier 1 has a rectangular, plate-shaped base body 2. The base body 2 has a plate 3 and ribs 4.1, 4.2 that cross each other and protrude from the rear side of the plate 3. The ribs 4.1, 4.2 partially have projections 5.1, 5.2 that protrude backwards in a hook-like manner at the outer ends, and the projections have outer edges that are oriented perpendicular to the plate 3.

[0059] The base body 2 has a first snap-in element 6 on the outer circumference, which is configured as a snap-in hook 7 protruding vertically rearward from the base plate.

[0060] These snap hooks 7 each have a strip section 7.1. A hook 7.2 protrudes outward from the strip section 7.1 at a distance from the base body 2 in the form of a strip inclined at an acute angle to the strip section 7.1. The hook 7.2 is arranged at a distance from the rear end of the strip section 7.1. The strip section 7.1 has an inclined portion 7.3 on the outer side at the rear end. The snap hook 7 forms a single-arm lever with a shorter first lever arm 7.4 and a longer second lever arm 7.5, which can be pivoted by pressing the outer side of the second lever arm 7.5.

[0061] Two snap hooks 7 are respectively arranged on the two long sides of the base body 2 , and one snap hook 7 is respectively arranged on the two short sides of the base body 2 .

[0062] The strip-shaped side walls 8.1-8.4 of the base body 2 protrude vertically forward from the lateral edges of the plate 3 of the base body 2 and define a recess in the form of a recess 9 on the front side of the base body 2. The recess 9 is used for receiving a module.

[0063] At the four corners of the plate 3 , two diagonally arranged screw bosses 10 and two diagonally arranged positioning protrusions 11 protrude rearward, and the screw bosses and positioning protrusions are respectively supported by lateral ribs 12 on the rear side of the plate 3 .

[0064] For reasons of production technology and in order to increase the elasticity of the snap hook, the plate-shaped main body 3 has a rectangular first opening 13 on the inner side of the snap hook.

[0065] The module carrier 1 is produced in one piece by injection molding.

[0066] according to Figure 2 The locking frame 14 has a rectangular frame body 15, which has four frame sides 15.1-15.4, which define a frame opening 16. The frame sides 15.1-15.4 are L-profiles 17.1-17.4 respectively. The first side legs 18.1-18.4 of the L-profiles 17.1-17.4 fall in the main plane (the plane with the largest extension dimension) of the locking frame 14, and together form a fitting section 19 of the locking frame 14. The second side legs 20.1-20.4 of the L-profiles 17.1-17.4 extend forward from the edge of the frame opening 16 perpendicular to the main plane of the locking frame 14, and together form a connecting section 21 of the locking frame 14.

[0067] The contact section 19 has a spring element 22 in the form of a bending spring 23 on the front side, which is inclined at an acute angle to the main plane. Three bending springs 23 are arranged on each of the two long frame sides 15.1, 15.3 of the latch frame 14, and two bending springs 23 are arranged on each of the two short frame sides 15.2, 15.4 of the latch frame 14. The bending springs 23 are distributed substantially evenly on the sides of the contact section 19.

[0068] The connecting section 21 has a second snap-in element 24 in the form of a snap-in receptacle on the inner circumference. The snap-in receptacle 25 is arranged on the front edge of the connecting section 21. Two snap-in receptacles 25 are arranged on each of the two long frame sides 15.1, 15.3, and only one snap-in receptacle 25 is arranged on each of the two short frame sides 15.2, 15.4.

[0069] The locking frame 14 is formed by integral injection molding of plastic.

[0070] The shapes and sizes of the module carrier 1 and the latching frame 14 are matched to each other so that the latching frame 14 can be pushed onto the module carrier 1 from behind with its frame opening 16, so that the latching hook 7 engages in the frame opening 16 and the connecting section 21 and latches with the latching receptacle 25, in that the latching hook engages with the hook portion 7.2 in the latching receptacle 25. In this position, the front side of the contact section 19 of the latching frame 14 is spaced apart from the front side of the base 2, so that this spacing area can accommodate the edge area of ​​the mounting opening of the wall of the device.

[0071] The recess 9 of the module carrier 1 is used to accommodate a touch panel or other modules. Figure 3 , the module 26 is installed in the recess 9, wherein the module 26 has a support plate 27, for example a support plate in the form of a display glass, which protrudes outward on the side of the base body 2 parallel to the main plane (the plane with the largest extension) of the base body 2.

[0072] exist Figure 6 Included with Figure 1 The same module carrier 1 and Figure 2 The various exemplary embodiments of the latching frame 14 show the module 26 in the recess 9 .

[0073] The module 26 is fixed to the module carrier 1 by means of an adhesive connection.

[0074] On the rear side of the module carrier 1, a rectangular electronic circuit board 28 with holes at the corners can be mounted, where the positioning protrusions 11 are introduced into two positioning holes arranged in the diagonal direction on the electronic circuit board 28, and screws 29 are inserted through the two screw holes arranged in the diagonal direction and screwed into the screw bosses 10. This is omitted in the current embodiment and is used for another embodiment. Figures 11 to 13 Shown in.

[0075] according to Figure 3 At the beginning of the installation, the module carrier 1 and the locking frame 14 are aligned with the rectangular installation opening 30 in the wall 31 of the housing 32 of the device. The wall 31 can be an outer wall of the housing 32. In principle, the wall 31 can also be an inner wall of the device, for example, a wall that separates two functional areas of the device from each other.

[0076] The size of the installation opening 30 is slightly larger than the outer size of the base body 2 .

[0077] according to Figure 4 In a further assembly step, the module carrier 1 with the base body 2 is inserted into the assembly opening 30 until the support plate 27 is supported on the front side of the wall 31 .

[0078] Finally, the latching frame 14 is pushed onto the module carrier 1 from behind until the spring elements 22 are supported on the rear side of the wall 31 , are slightly elastically deflected, and the latching hooks 7 latch into the latching receptacles 25 .

[0079] exist Figure 5 , the device is shown in a mounted position in which the module carrier 1 and the latching frame 14 are latched into one another and the spring element 22 is supported on the wall 31 in an elastically deformable manner. In this mounted position, the device 33 consisting of the module carrier 1, the module 26 and the latching frame 14 is clamped on the wall 31 at the outer edge of the mounting opening 30. The manufacturing tolerances of the device 33 and the wall 31 are compensated by the spring element 22. It is not important that the mounting opening 30 and the module carrier 1 match exactly, since the support plate 27 covers the gap between the mounting opening 30 and the module carrier 1 on the outside.

[0080] The device 33 can be installed very simply and without the use of tools. Disassembly can also be carried out simply and without the use of tools. For this purpose, the opposite snap hooks 7 of the module carrier 1 can be slightly pushed together at the rear end until the hooks 7 . 2 are disengaged from the snap receptacles 25 . After this, the latch frame 14 can be pulled off the module carrier 1 and the module carrier 1 can be removed from the installation opening 30 .

[0081] Figures 6 to 8 The examples in Figures 1 to 5 The difference from the embodiment in the embodiment is that the connecting section 21 of the locking frame 14 has a plurality of snap-in receiving portions 25.1, 25.2, 25.3 at a plurality of snap-in positions arranged one after another in a direction perpendicular to the contact section 19. Therefore, the module carrier 1 and the locking frame 14 can be snap-in or locked to each other in different snap-in positions. This is advantageous for roughly compensating for manufacturing tolerances and is advantageous for the use of the device 33 with different devices in which the installation openings 30 are formed in the wall 31 with different wall thicknesses.

[0082] The rear edge of each snap receiving portion 25.1, 25.2, 25.3 is inclined rearwardly corresponding to the inclination of the rear side of each hook portion 7.2, so that the locking frame 14 is easily moved to the rear locking position.

[0083] Furthermore, this embodiment has an outer step 34 on the front side of the wall 31, which extends around the mounting opening 30 and is dimensioned so that it accommodates the support plate 27. The front side of the support plate 27 thus ends flush with the front side of the wall 31 beside the outer step 34. The gap between the outer periphery of the support plate 27 and the outer boundary of the outer step can be kept small. In a view from the outside, the module 26 is perfectly integrated into the wall.

[0084] Figures 9 to 13 Examples and Figures 1 to 5 The embodiment of the embodiment of FIG. 1 differs in that the first latching elements 6 of the module carrier 1 are designed as latching receptacles 25 instead of latching hooks and the second latching elements 24 of the latching frame are designed as latching hooks 7 instead of latching receptacles.

[0085] A further difference is that the support plate 27 is formed integrally with the module carrier 1 and not with the module 26 .

[0086] The module carrier 1 has snap-fit ​​receptacles 25 on the outer periphery of the strip-shaped side walls 8.1-8.4. The snap-fit ​​receptacles 25 are configured as rectangular second through openings 35 of the module carrier 1. Two snap-fit ​​receptacles 25 are respectively provided on the two long sides of the base body 2, and one snap-fit ​​receptacle 25 is respectively provided on the two short sides of the base body 2.

[0087] The base body 2 also has a rearwardly projecting insertion bevel 36 on the rear side next to the snap-in receptacle 25. The insertion bevel 36 is formed on the outer sides of rearwardly projecting parallel projections 37.1, 37.2 which are connected to one another via a web.

[0088] The support plate 27 is a rectangular frame 38 having a window 39 on the front side. The support plate 39 is integrally connected to the front edge of the strip-shaped side walls 8.1-8.4 surrounding the recess 9 at the edge of the window 39 and protrudes outward parallel to the main plane of the base body 2. The window 39 and the recess 9 together form a notch 40 for the module 26 to be installed and wired.

[0089] The base body 2 can have a through-hole in order to connect an electronic module on the front side of the base body to an electronic circuit board on the rear side of the base body or to the electronics in the device by means of a cable guided therethrough.

[0090] The module carrier 1 is injection-molded in one piece from plastic.

[0091] according to Fig.10 The latch frame has a snap hook 7 on the inner circumference. Each snap hook 7 is connected to the front edge of the connecting section 21 through a connecting plate 41. Each snap hook 7 has a strip section 7.1, which extends perpendicularly to the fitting section 19 and has a hook 7.2 protruding inward at the front end. The connecting plate 41 is connected to the center of the strip section 7.1. As a result, the snap hook 7 is configured as a double-arm lever, which has a first lever arm 7.4 from the hook 7.2 to the connecting plate 41 and a second lever arm 7.5 from the connecting plate 41 to the rear end of the strip section 7.1, and the lever can be swung by operating the second lever arm 7.5.

[0092] The bending springs 23 are arranged on the front side of the latch frame 14 above the wedge-shaped cutouts 42 of the contact section 19, so that the bending springs 23 are connected to the contact section 19 above the deepest point of the cutouts 42. This arrangement was selected to increase fatigue strength and for manufacturing reasons.

[0093] The latch frame 14 is integrally injection-molded from plastic.

[0094] On the front side of the module carrier 1 , a module (not visible in the figure) is glued into the recess 40 . Figures 11 to 13 , an electronic circuit board 28 is fixed to the rear side of the module carrier 1 .

[0095] according to Fig.11 At the beginning of installation, the module carrier 1 and the locking frame 14 are arranged on different sides of the installation opening 30 and aligned with the installation opening.

[0096] according to Fig.12 Next, the module carrier 1 is pushed into the installation opening 30 until the support plate 27 abuts against the front side of the wall 31 .

[0097] Finally, according to Fig.13 , the latch frame 14 is pushed onto the module carrier 1 from behind until the bending spring 23 is supported on the rear side of the wall 31, slightly elastically deflected, and the latch hook 7 is latched into the latch receptacle 25. Fig.13 The device is shown in the installed position of the clip.

[0098] In this embodiment, the spring element 22 also compensates for tolerances of the associated components 1, 14, 31. The support plate 27 covers the edge area of ​​the installation opening 30, so that it is not important that the module carrier 1 fits exactly to the installation opening 30. Installation can be carried out without the aid of tools. Disassembly can also be easily performed by slightly swinging the rear ends of the mutually opposite snap hooks 7 together. As soon as the hooks 7.2 are disengaged from the snap receptacles 25, the latch frame 14 can be pulled out of the module carrier 1. After this, the module carrier 1 can be removed from the installation opening 30.

[0099] Another advantage is that the snap hook 7 is a component of the latch frame 14, so that in the event of failure the latch frame 14 has to be replaced. The latch frame 14 can preferably be used as a universal part for different devices, so that the replacement of this component can be realized relatively economically.

[0100] Reference numerals list

[0101] 1 Module carrier

[0102] 2 Matrix

[0103] 3 Panels

[0104] 4.1, 4.2 Ribs

[0105] 5.1, 5.2 Bump

[0106] 6 First snap-fit ​​element

[0107] 7 Snap hook

[0108] 7.1 Strip segments

[0109] 7.2 Hook

[0110] 7.3 Inclined part

[0111] 7.4 First lever arm

[0112] 7.5 Second lever arm

[0113] 8.1-8.4 Sidewall

[0114] 9 recess

[0115] 10 Screw boss

[0116] 11 Positioning protrusion

[0117] 12 Ribs

[0118] 13 First port

[0119] 14 Lock frame

[0120] 15 Frame

[0121] 15.1-15.4 Frame side

[0122] 16 Frame opening

[0123] 17.1-17.4 L profile

[0124] 18.1-18.4 First leg

[0125] 19 Fitting section

[0126] 20.1-20.4 Second leg

[0127] 21 Connection section

[0128] 22 Spring element

[0129] 23 Bending spring

[0130] 24 Second snap-fit ​​element

[0131] 25 Buckle receiving portion

[0132] 26 modules

[0133] 27 Support plate

[0134] 28 Electronic circuit boards

[0135] 29 Screws

[0136] 30 Mounting port

[0137] 31 Wall

[0138] 32 Shell

[0139] 33 Installation

[0140] 34 Outer step

[0141] 35 Second port

[0142] 36 Lead-in bevel

[0143] 37.1, 37.2 Bump

[0144] 38 Frame

[0145] 39 Window

[0146] 40 Notch

[0147] 41 Connecting plate

[0148] 42 Incision

Claims

1. A device for mechanically fixing a module to a wall of a device, the wall having a mounting opening for receiving the module, the device comprising: A module carrier (1) having a plate-shaped base body (2) for being inserted into the installation opening (30) and at least one first snap-in element (6) on the outer periphery of the base body (2), a module (26) which is arranged on the front side of the base body (2) and is fixed to the module carrier (1), a support plate (27) for supporting on the front side of the wall portion (31) with the mounting opening (30), the support plate being connected to the module carrier (1) or the module (26) and protruding outwardly parallel to the main plane of the base body (2), A locking frame (14) having a frame opening (16) for inserting the rear portion of the base body (2) and at least one second locking element (24) on the inner circumference, at least one spring element (22) which is designed and arranged to elastically support the latching frame (14) on the rear side of the wall (31) next to the installation opening (30) and / or to elastically support the support plate (27) on the front side of the wall, The first snap-in element (6) and the second snap-in element (24) are configured to snap into each other when the base body (2) is inserted into the frame opening (16), and there is a spacing between the rear side of the support plate (27) and the front side of the locking frame (14) to accommodate the edge area of ​​the wall portion (31) surrounding the installation opening (30).

2. The device according to claim 1, wherein: The support plate (27) is connected to the module carrier (1) or to the module (26) in one piece.

3. The device according to claim 1 or 2, wherein: The module carrier (1) has a recess (40) on the front side, and the module (26) is inserted into the recess (40).

4. The device according to any one of claims 1 to 3, wherein: The module (26) is connected to the module carrier (1) by means of an adhesive connection.

5. The device according to any one of claims 1 to 4, wherein: The module (26) is a display, a monitor, a keyboard, a touch screen, other UI modules or a transparent disk.

6. The device according to any one of claims 1 to 5, wherein: A screw boss (10) protrudes rearward from the rear side of the base body (2), and an electronic circuit board (28) is fixed on the screw boss (10) by means of screws (29).

7. The device according to any one of claims 1 to 6, wherein: The module carrier (1) has at least one snap hook (7) protruding backward on the outer circumference, and the locking frame (14) has at least one snap receiving portion (25) for the snap hook (7) on the inner circumference, and / or the locking frame (14) has at least one snap hook (7) protruding forward on the inner circumference, and the module carrier (1) has at least one snap receiving portion (25) for the snap hook (7) on the outer circumference.

8. The device according to claim 7, wherein: The snap hook (7) has a single-arm or double-arm lever, the lever having a first lever arm (7.4) and a second lever arm (7.3). The first lever arm has a hook portion (7.2) for snapping into a snap receiving portion (25), and the second lever arm is used to release the snap connection with the snap receiving portion (25).

9. The device according to any one of claims 1 to 8, wherein: The module carrier (1) and / or the latching frame (14) has latching receptacles (25.1, 25.2, 25.3) at a plurality of latching positions arranged one behind the other in a direction perpendicular to the plate-shaped base body.

10. The device according to any one of claims 1 to 9, wherein: The module carrier (1) has a plurality of first snap-in elements (6) on the outer circumference, and the locking frame (14) has a plurality of second snap-in elements (24) on the inner circumference.

11. The device according to any one of claims 1 to 12, wherein: The spring element (22) protrudes from the front side of the latch frame (14).

12. The device according to any one of claims 1 to 11, wherein: The latching frame (14) has on the front side at least one spring element (22) designed as a bending spring (23) which is inclined at an acute angle to the frame plane.

13. The device according to any one of claims 1 to 12, wherein: The snap hook (7) is formed integrally with the module carrier (1) or with the snap-on frame (14), and / or the snap-on receiving portion is formed integrally with the snap-on frame (14) or with the module carrier (1), and / or the spring element (22) is formed integrally with the snap-on frame (14) or with the support plate (27).

14. The device according to any one of claims 1 to 13, wherein: The module carrier (1) is made of plastic and / or the locking frame (14) is made of plastic.

15. The device according to any one of claims 1 to 14, wherein: The module carrier (1) and / or the latching frame (14) are injection-molded.

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