Height-adjustable device mount for vehicle rails

Abstract

Height-adjustable device holder for vehicle rails, comprising a base holder to be fixed to a vehicle rail, an adapter plate (28) to be fixed to the base holder in various relative positions to the same for holding a device to be attached to the vehicle rail and means (34, 36) for temporarily determining the relative position of adapter plate (28) and base holder.

Description

TECHNICAL AREA OF INVENTION

[0001] The invention relates to a device holder for the height-adjustable mounting of devices, in particular electronic devices such as wheel sensors, on vehicle rails. BACKGROUND OF THE INVENTION

[0002] For various reasons, there is a need to attach devices, especially electronic devices such as sensors and switching devices, to vehicle tracks, such as railway tracks, for which appropriate device brackets are required.

[0003] Numerous device mounting systems for attaching devices to vehicle rails (hereinafter also referred to as rails) have already been proposed. These can be broadly categorized according to whether mounting the device requires drilling through a rail section, usually the so-called rail web, or whether it is clamped to a rail section, usually the so-called rail foot, without drilling. Device mounting systems of the first type are known, for example, from DE 32 34 651 A1, DE 199 15 598 A1, and DE 10 2013 012 084 B4. Device holders of the second type are known, for example, from DE 695 741 C1, EP 1 960 603 B1 and DE 974 202 C1, wherein, according to all three documents, device holders are clamped to the rail base and wherein the last two documents show height-adjustable device holders.

[0004] The most common and safety-related application of such device mounts is the mounting of so-called wheel sensors, also known as track switches, although the invention is not limited to such electronic devices.

[0005] Wheel sensors are regularly used to monitor track sections to determine whether a rail vehicle, especially a train, is present. This is achieved, for example, by inductively detecting how many wheels (and thus axles; in railway engineering, this is usually referred to as axle counting and axle counting circuits) have passed over sensors located on the rails at the beginning and end of a monitored track section. This allows the system to determine whether another rail vehicle is permitted to enter the track section.

[0006] For such sensors and other devices to function correctly, their precise positioning on a rail is crucial, especially adjusting the distance between the top of the device and the top of the rail's running surface, commonly referred to as height adjustment. The challenge of achieving an exact height adjustment isn't limited to the initial installation of a device on a rail. Wear and subsequent modifications often significantly erode the running surface, considerably reducing the distance between the top of the device and the top of the running surface. This can render certain settings, such as device calibration, inaccurate, potentially leading to faulty measurements, particularly with sensors. In extreme cases, a device can even be damaged by a passing wheel.

[0007] Height adjustment is far from trivial in the work environment in question. Equipment mounts must be able to withstand loads of several hundred, sometimes even over a thousand grams, which can occur when a very fast train passes over a section of track to which an equipment mount is attached. In addition to mechanical stresses, thermal stresses are also regularly present. Accordingly, the equipment mounts are dimensioned and typically made of high-density materials, making them relatively heavy compared to the equipment they hold.

[0008] To at least partially solve the problem of height adjustment, height-adjustable device mounts are known from the aforementioned publications EP 1 960 603 B1 and DE 974 202 C1. Each mount comprises a base bracket with two clamping jaws, which is fixed to a vehicle rail, and an adapter plate, which can be fixed to the base bracket in various relative positions to the base bracket, for mounting a device to be attached to the vehicle rail. The solution known from EP 1 960 603 B1 allows the typically very heavy base bracket to be fixed to the rail first, and then the adapter plate to be fixed to the base bracket at a specific mounting height. In contrast, the solution known from DE 974 202 C1 uses a single clamping screw to clamp both the adapter plate against one of the two clamping jaws of the base bracket and the two clamping jaws against the rail foot.It should be noted at this point that the technical term "adapter plate" does not necessarily refer to an actual plate-shaped (flat) component. Rather, the adapter plate can have various suitable designs and, for example, be shaped like a T-beam or a box. By using different adapter plates, different devices can be attached to one and the same base. In this text, the term "adapter plate" therefore refers not to the precise three-dimensional shape of the component so named, but to its function. BRIEF SUMMARY OF THE INVENTION

[0009] While the adapter plates known so far can be fixed to a base bracket in various relative positions, thus enabling the desired height adjustment, setting a desired height (i.e., the distance between the device, typically the top of the device, and the rail, typically the top of the rail's running surface) is regularly very complex: due to the high loads to which device brackets of the type in question are subjected, fasteners such as large clamping screws are used to fix the adapter plates to the base brackets, which are characterized precisely by the fact that they do not come loose easily.

[0010] To test whether, for example, inductive wheel sensors are correctly positioned, the adapter plate and base mount of conventional device holders must first be fully fixed before the positioning can be tested. If the positioning is incorrect, the adapter plate and base mount must be laboriously loosened, the adapter plate repositioned, and then fully fixed again before another test can be performed. This procedure is not only cumbersome but also time-consuming and therefore associated with high costs: if, for example, the corresponding wheel sensors need to be realigned during maintenance work, this typically cannot be done quickly during operation; instead, a corresponding section of track must be taken out of service for a certain period, and trains must be rerouted accordingly.Work on the equipment brackets is typically carried out by hand and is not only physically demanding, but also requires maintenance personnel to carry appropriately sized and therefore heavy tools, which poses an additional challenge in remote track sections.

[0011] Based on this, the invention aims to provide a height-adjustable device holder in which the height adjustment is significantly simplified.

[0012] The problem is solved by a device holder with the features of claim 1. Dependent claims 16 and 17 relate to a device, in particular an electronic device, with a device holder according to the invention or an arrangement comprising a vehicle rail and a device, in particular an electronic device, attached to the vehicle rail by means of a device holder according to the invention.

[0013] An adjustable-height device mount for vehicle rails according to the invention comprises a base mount that is fixed to a vehicle rail and an adapter plate that can be fixed to the base mount in various relative positions for mounting a device to be attached to the vehicle rail, as well as means for temporarily fixing the relative position of the adapter plate and the base mount. Thanks to such means for temporarily fixing the relative position, it becomes possible to test various height settings before the adapter plate is fixed to the base mount in a manner known per se, such that the fixation withstands the loads occurring during operation. In other words, a "quick adjustment" is separated from the final (releasable) fixation.This separation significantly simplifies and, above all, accelerates the entire process of positioning a device to be attached to a rail using the device holder according to the invention. This not only saves effort but also contributes massively to cost reduction through the resulting time savings, and is advantageous not only when initially attaching a device but also, in particular, when repositioning it during maintenance work.

[0014] In a preferred embodiment, the adapter plate and base bracket are fixed by means of at least one clamping screw, which is height-adjustable within at least one elongated hole in the base bracket or the adapter plate. The means for temporarily fixing the clamping screw are designed to define its position within the elongated hole. This establishes a relative position between the adapter plate and the base bracket, and thus the distance between the device and the rail, allowing the device to be correctly positioned before the clamping screw is fully tightened.

[0015] It should be noted here that the at least one clamping screw can also serve to attach the base bracket to the rail, so that the at least one clamping screw has a dual function when tightened, fixing both the base bracket to the rail and the adapter plate to the base bracket. However, since this is irrelevant for the height adjustment according to the invention, it can be disregarded here whether the base bracket is first fixed to the rail and then the adapter plate is fixed to the base bracket with separate fasteners, or whether one or more clamping screws fulfill the aforementioned dual function.

[0016] In another preferred embodiment, the means for temporary fixing comprise a grid and a counterpart engaging with the grid to define predetermined relative positions of the adapter plate and the base mount. Such a design can contribute to particularly quick and easy positioning of a device on a rail, in which the desired distance (the "height") can be set in predefined steps, the grid naturally having suitable distances between the individual locking positions for the respective application.

[0017] If the base bracket and adapter plate are fixed by at least one clamping screw, the position of the at least one clamping screw in the elongated hole can advantageously be determined by at least one clamping screw opening in the counterpart or the indexing mechanism. Such a clamping screw opening can advantageously be dimensioned to guide and hold an inserted clamping screw in such a way that the device bracket can be partially pre-assembled.

[0018] In a preferred embodiment, the at least one clamping screw opening is arranged between the adapter plate and the base bracket in the intended assembly state of the electronics holder. This allows locking elements such as snap rings, locking washers, wedge washers, etc., to be positioned directly between the clamping screw head and, depending on the clamping screw's orientation, the adapter plate or the base bracket, so that the element containing the at least one clamping screw opening does not impair the locking element's effectiveness. The same applies, if provided, to a nut interacting with the clamping screw, in which case corresponding locking elements also bear directly against the nut and, depending on the clamping screw's orientation, either the base bracket or the adapter plate.

[0019] In another preferred embodiment, the indexing has a sawtooth profile with a preferred direction in which the engaging counterpart can be moved without being positively locked. Typically, the preferred direction is chosen such that, for positioning a device, it can simply be moved without tools from a distant position closer and closer to the running surface, where it then remains in the respective indexing positions in which the counterpart positively engages the indexing.

[0020] In another preferred embodiment, the counterpart is formed by a spring-loaded sheet, wherein the indexing or the spring-loaded sheet is slidably attached to the base mount or the adapter plate. Such a design enables reliable temporary fixing of the adapter plate relative to the base mount with minimal weight of the necessary components. It should be expressly noted here that the spring-loaded sheet need not be a rolled metal product, as the term "sheet" might suggest. Rather, the "spring-loaded sheet" can also be made of other suitable materials, in particular appropriate plastics. However, since components of the type in question are typically made of metal, at least currently, the term "spring-loaded sheet" has been used in the trade and is therefore to be understood in this text as functional and not as material-limiting.

[0021] If such a spring plate is provided, according to a further preferred embodiment it can have an engagement section that engages in the indexing and an actuating section for removing the engagement section from the indexing. This advantageously eliminates the need for separate components for height adjustment, as the engagement section can simply be moved out of the indexing by, for example, pulling on the actuating section. Advantageously, the actuating section is designed so that, in the intended mounting state of the device holder on a rail, it can be actuated from a side of the device holder facing away from the rail, which allows for particularly easy handling of the device holder.

[0022] In another preferred embodiment, the spring plate has a mounting section with two undercuts, which can be guided through a receiving opening in the base bracket or the adapter plate such that, in the intended assembly state of the device holder, the undercuts rest against an edge of the receiving opening. This advantageously allows the spring plate to be attached to the adapter plate or the base bracket without any additional separate fasteners, ensuring that it is securely held during work with the device holder, particularly when positioning a device to be mounted on a rail. By appropriately designing the receiving opening, it is also possible, if desired, to easily arrange the spring plate so that it can be slidably positioned on the adapter plate or the base bracket.

[0023] In another preferred embodiment, the engagement section and the actuating section are formed on the mounting section of the spring plate, for example by punching and bending, if the spring plate is actually a sheet metal, so that the spring plate can be multifunctional at a low weight.

[0024] The grid can be formed on the base plate or the adapter plate. In a preferred embodiment, however, the grid is provided by a grid plate supported on the base plate or the adapter plate, which can offer advantages in terms of manufacturing and weight. Generally, it is simpler to manufacture a grid plate made of, for example, plastic, than to provide the base plate or adapter plate, which is typically made of metal, with a grid. Furthermore, the grid plate can help to ensure that a component such as, for example,to attach the spring plate to the adapter plate or the base bracket: If the above-mentioned receiving opening is provided for a mounting section of a spring plate, the grid plate can be arranged between the receiving opening and the mounting section in the intended assembly state of the device bracket, thus contributing on the one hand to securing the spring plate, while conversely the spring plate tensions and secures the grid plate against the receiving opening.

[0025] In another preferred embodiment, alignment openings are provided in the component containing the receiving opening, i.e., in the base holder or the adapter plate, and alignment projections that are at least partially complementary to these openings are provided on the grid plate. This facilitates the positioning and mounting of the grid plate, which can also be, for example, glued in place.

[0026] In another preferred embodiment, at least one elongated hole and, if present, the receiving opening are provided in the adapter plate. This not only offers manufacturing advantages but also contributes to reducing the weight of the adapter plate, which is essentially an undamped mass, and thus the forces acting on the base mount.

[0027] Further details and advantages of the invention will become apparent from the following purely exemplary and non-limiting description of embodiments in conjunction with the drawing comprising six figures. BRIEF DESCRIPTION OF THE DRAWING Fig. Figure 1 shows a highly schematic section of a rail together with a device holder according to the invention arranged on it, with an electronic device. Fig. Figure 2 shows a perspective view of the front side of an adapter plate according to the invention, including a spring plate and a grid plate. Fig. Figure 3 shows a partially schematic perspective view of the back of the adapter plate including spring plate and grid plate according to Fig. 2. Fig. Figure 4 shows a perspective view of a spring sheet according to the invention. Fig. Figure 5 shows a perspective view of a grid plate according to the invention. Fig. Figure 6 shows a partially schematic representation of a step in the assembly of the device holder according to the invention. DESCRIPTION OF PREFERRED EXECUTION FORMS

[0028] In the Fig. Figures 1 to 6 are, each more or less schematically represented, a device holder according to the invention and its parts in various assembly and application stages.

[0029] The Fig. Figure 1 schematically shows a section of a rail, designated as a whole by 10, together with a device holder according to the invention arranged thereon, comprising an electronic device designated as a whole by 12. The device is a typical wheel sensor with a sensor plate 14 and a sensor housing 16.

[0030] The section of rail 10 shown is a typical railway rail with a rail head 18, the upper side of which forms a running surface 20, a rail web 22 and a rail foot 24.

[0031] In the illustrated embodiment of a device holder according to the invention, a base holder 26 engages the rail foot 24. It clamps the rail foot 24 in a claw-like manner, for which purpose the Fig. 1. The visible part of the base 26 is clamped against a corresponding counterpart on the opposite side of the rail foot 24 by means of one or more clamping screws. The device holder shown is therefore one of those that does not require drilling through the rail 10. However, the height adjustment according to the invention is not limited to such types of device holders. The base can theoretically also be attached to the rail web 22 via corresponding bores and corresponding retaining screws.

[0032] The device holder further comprises an adapter plate 28, wherein the adapter plate 28 and the base holder 26 are fixed in this embodiment by means of two clamping screws which are "height-adjustable" in two elongated holes 30. To clarify the design of an adapter plate 28, the schematic representation of the Fig. 1. Both the clamping screws, which actually penetrate the two elongated holes 30 in the adapter plate 28 to fix the adapter plate 28 relative to the basic position 26, and the fastening screws, which actually penetrate the two fastening openings 32 to attach the device 12 to the adapter plate 28, have been omitted. The technical term "height-adjustable guide" refers to the fact that by sliding the adapter plate along the elongated holes 30, the distance of the device 12 to the running surface of the rail 10, and thus the height of the device 12 above the rail foot 24, can be changed.

[0033] In the Fig. 2 and Fig. Figure 3 shows the adapter plate 28 together with a spring plate 34 and a grid plate 36 in perspective and partially schematically, once obliquely from the front (i.e., viewed in the intended assembly state towards a rail) and once obliquely from the rear (i.e., viewed from the direction of the rail), including mounting elements such as clamping screws 38 for fixing the adapter plate 28 to the basic position and fastening screws 40 for attaching a device to the adapter plate 28. As in Fig. 6. The screws are shown schematically, i.e., without threads. In reality, the cylindrical sections of screws 38 and 40 are provided with external threads. Furthermore, the clamping screws 38 are shown here in a highly foreshortened form, at least when they fulfill the dual function described above and are intended not only to fix the adapter plate 28 to the base bracket, but also to pre-tension a basic assembly, consisting, for example, of two clamping jaws, against the rail.

[0034] The clamping screws 38, which pass through the elongated holes 30, can theoretically be screwed into receiving openings in the base bracket that have corresponding internal threads. Preferably, however, the receiving openings are designed as guide openings without threads, in which case corresponding nuts are provided on the side of the base bracket facing away from the adapter plate. As already mentioned above, the clamping screws can serve either to fix the adapter plate to the base bracket or to fix the base bracket to the rail, for which purpose they can, for example, be designed to clamp two clamping jaws of a corresponding base bracket against each other.

[0035] In the sense of a kinematic reversal, the design can also be such that the elongated holes are located in the basic position and the receiving openings for the clamping screws 38 are arranged in the adapter plate. Likewise, it is essentially irrelevant whether the means for temporarily fixing the relative position of the adapter plate and the base mount, described in detail below, are arranged on the adapter plate or the basic mount. However, for manufacturing and handling reasons, the arrangement shown in the figures has proven particularly advantageous.

[0036] The means for temporarily fixing a relative position of adapter plate 28 and base mount (26 in Fig. 1) In this embodiment, the clamping screws 38 are designed to determine the position of the clamping screws 38 in the elongated holes 30 and comprise the spring plate 34 and the grid plate 36, which, according to the invention, makes it possible to decouple the positioning of the adapter plate 28 relative to the base bracket, and thus the height adjustment of a device attached or to be attached to the adapter plate relative to the rail, from the fixing of the adapter plate 28 to the base bracket, so that, advantageously, the fixing only needs to take place when the height is correctly set.

[0037] In the illustrated embodiment, the grid plate 36 provides a grid (42 in Fig. 5) ready, while the spring plate 34, more precisely an engagement section formed on the spring plate 34 (44 in Fig. 4) forms a counterpart that engages in the grid to define predetermined relative positions of adapter plate 28 and base mount. In principle, such a grid can also be formed directly on the adapter plate 28 or, depending on the design, on the base mount. However, providing the grid by means of a separate component has several advantages, which will be discussed below.

[0038] As in Fig. As can be clearly seen in Figure 4, the spring plate 34, which in this embodiment acts as a counterpart to the indexing, has two clamping screw openings 48 formed in tab sections 46, which are advantageously each adapted to the outer diameter of the clamping screws in such a way that they guide inserted clamping screws and hold them in place so that the adapter plate can be provided pre-assembled, meaning that a fitter on site does not have to first equip the adapter plate with clamping screws.

[0039] Will the in the Fig. 2 and Fig. 3. Adapter plate 28 shown is attached to a base bracket, the tab sections 46 and thus the clamping screw openings 48 of the Fig. The spring plate 34 shown in Figure 4 is positioned between the adapter plate and the base bracket, so that locking elements 50, such as snap rings, locking washers, wedge washers, etc., bear directly against the adapter plate 28 and can exert their full locking effect against unintentional loosening of the clamping screws 38. For example, in Fig. As indicated in Figure 6, a washer 51 can be placed between the screw head and the locking element 50, however this is not desirable if the locking elements are locking washers.

[0040] In Fig. 4 can be clearly seen that the spring plate 34 in this embodiment has a fastening section 52 with two undercuts 54, which is thus provided by a receiving opening (56 in Fig. 2) can be guided through the adapter plate so that the undercuts 54 rest against an edge of the receiving opening in the intended assembly state. This advantageously allows the spring plate to be attached to the adapter plate without any further separate fastening means, so that it is held securely during work with the device holder, in particular when positioning a device to be mounted on a rail, with the grid plate 36 as in Fig. 2 shown in this embodiment is pushed through a slot formed between the fastening section 54 and the adapter plate 28, so that spring plate 34 and grid plate 36 secure each other to the adapter plate 28.

[0041] As in Fig. As can be further seen in Figure 4, in this embodiment, the edge of the fastening section 52 facing the grid plate in the intended assembly state forms an engagement section 44 that engages in the grid of the grid plate, while the side of the fastening section 52 opposite the engagement section 44 is bent for easier handling and forms an actuating section 58. The fastening section 52 is connected to the rest of the spring plate 34 via two spring bars 60, so that the engagement section 44 can be removed from the grid by pulling on the actuating section 58, and thus the relative position of the adapter plate can also be adjusted against the preferred direction described below.

[0042] As can be seen from Fig. 2 results in the actuating section 58 being located on the side of the adapter plate 28 facing away from one of the rails in the intended assembly state and can therefore be easily actuated.

[0043] In Fig. Figure 5 shows the grid plate 36 provided in this embodiment in detail. It has two identical grids 42, the individual locking projections 62 of which, for the sake of clarity, only some are provided with reference numerals, are designed such that the grids 42 each have a sawtooth profile with a preferred direction 64 indicated by an arrow, in which an engaging counterpart, in the illustrated embodiment the spring plate, can be moved without being positively locked.

[0044] The grid plate 36 further comprises a retaining section 66 and a projection 68, which serve to hold the grid plate 36 in the receiving opening (56 in Fig. 2) to align and support.

[0045] Fig. Figure 6 shows a highly schematic representation of a step in the assembly of the device holder according to the invention, namely the positioning of the spring plate, of which only the fastening section 52 with engagement section and actuation section as well as part of one of the spring bars are visible here, on an adapter plate 28. To clarify the later installation situation, the clamping screws 38 are also shown, although these are actually only visible after the spring plate has been correctly positioned in the receiving opening 56 through the adapter plate and the clamping screw openings (48 in ) which are then positioned behind the elongated holes. Fig. 4) are inserted. Mounting section 52 and receiving opening 56 are dimensioned such that the mounting section 52 can only be inserted obliquely through the receiving opening 56. Once the clamping screw openings are positioned behind the elongated holes, the spring plate is supported by the undercuts described above (54 in Fig. 4) at the corresponding edge areas of the receiving opening 56, and the spring plate can move upwards and downwards in the receiving opening, parallel to the elongated holes (30 in Fig. 1) can be moved. Once the clamping screws are guided through the elongated holes and the clamping screw openings, a movement of the spring plate causes a movement of the clamping screws.

[0046] When the spring plate is correctly positioned in the receiving opening 56, the grid plate 36 is pushed from below through the slot formed between the mounting section 52 and the adapter plate 28 and positioned in the receiving opening 56. The projection 68 then rests against an upper edge 70 of the receiving opening 56, while the retaining section 66 rests against the adapter plate 28 below the receiving opening 56. The spring plate then clamps the grid plate 36 against the adapter plate 28, while conversely, the grid plate 36 holds the spring plate correctly positioned in the receiving opening 56. This positioning is further supported by the clamping screws 38 after they are inserted.

[0047] For easy positioning and support of the grid plate 36 on the adapter plate 28, this embodiment provides two alignment openings 72 in the adapter plate 28, which interact with alignment projections on the grid plate 36 that are at least partially complementary to the alignment openings and are not visible here. Alternatively or additionally, the grid plate 36 can also be glued to the adapter plate 28, for which purpose, for example, a self-adhesive strip can be provided on the side of the retaining section 66 facing the adapter plate 28.

[0048] When fully assembled, the grid plate 36 and spring plate are slidable relative to each other parallel to the elongated holes, but are held firmly in predefined detent positions. This allows the adapter plate to also be moved relative to the base bracket when the clamping screws 38 are not fully tightened. This enables quick and easy adjustment of various relative positions between the adapter plate and the base bracket – and thus between the device to be mounted and the rail. It is then possible to test whether the respective position is optimal, i.e., whether the device to be mounted is in the desired position relative to the rail. Only when an optimal position is found are the clamping screws 38 fully tightened and the adapter plate 28 fixed relative to the base bracket so that the set position is maintained even under the high loads encountered during operation. REFERENCE MARK LIST 10 rail 12 devices 14 Sensor plate 16 sensor housings 18 Railhead 20 tread surface 22 rail bridge 24 rail foot 26 Base bracket 28 Adapter plate 30 slotted holes 32 Mounting opening 34 Spring sheet 36 grid plates 38 clamping screw 40 fastening screw 42 grid 44 Intervention section 46 tab section 48 Clamping screw opening 50 safety devices 51 Washer 52 Fastening section 54 Undercut 56 Intake opening 58 Actuation section 60 spring bars 62 Rastvorsprung 64 Preferred direction 66 Stop section 68 lead 70 Top edge 72 Alignment opening QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] DE 32 34 651 A1

[0003] DE 199 15 598 A1

[0003] DE 10 2013 012 084 B4

[0003] DE 695 741 C1

[0003] EP 1 960 603 B1 [0003, 0008] DE 974 202 C1 [0003, 0008]

Claims

[1] Height-adjustable device holder for vehicle rails, comprising - a base bracket to be fixed to a vehicle rail and - an adapter plate that can be fixed to the base mount in various relative positions to the base mount for mounting a device to be attached to the vehicle rail, characterized by , that - Means are provided for temporarily fixing the relative position of the adapter plate and the base bracket. [2] Device holder according to claim 1, characterized by , that the fixing of the adapter plate and base bracket is effected by at least one clamping screw which is guided in at least one elongated hole of the base bracket or the adapter plate in a height-adjustable manner, wherein the means for temporary fixing are designed to fix the position of the at least one clamping screw in the at least one elongated hole. [3] Device holder according to claim 1 or 2, characterized by, that the means for temporary fixing comprise a grid and a counterpart engaging in the grid to define predetermined relative positions of the adapter plate and base mount. [4] Device holder according to claims 2 and 3, wherein the position of the at least one clamping screw in the elongated hole is determined by at least one clamping screw opening in the counterpart or the indexing. [5] Device holder according to claim 4, wherein the at least one clamping screw opening is arranged between the adapter plate and the base holder in the intended assembly state of the electronics holder. [6] Device holder according to one of claims 3 to 5, characterized by that the grid has a sawtooth profile with a preferred direction in which the engaging counterpart can be moved without being positively locked. [7] Device holder according to one of claims 3 to 6, characterized by, that the counterpart is formed by a spring plate, wherein the grid or the spring plate is slidably attached to the base mount or the adapter plate. [8] Device holder according to claim 7, wherein the spring plate has an engagement section engaging in the indexing and an actuating section for removing the engagement section from the indexing. [9] Device holder according to claim 8, wherein the actuating section is designed such that, in the intended mounting state of the device holder on a rail, it can be actuated from a side of the device holder facing away from the rail. [10] Device holder according to one of claims 7 to 9, wherein the spring plate has a fastening section with two undercuts which can be passed through a receiving opening in the base holder or the adapter plate such that the undercuts are in contact with an edge of the receiving opening in the intended assembly state of the device holder. [11] Device holder according to claim 10 and one of claim 8 or claim 9, characterized by that the engagement section and the actuation section are formed on the fastening section. [12] Device holder according to one of claims 3-11, characterized by that the grid is provided via a grid plate supported on the base mount or the adapter plate. [13] Device holder according to claim 12 and one of claims 11 or 11, characterized bythat the grid plate is positioned between the receiving opening and the mounting section in the intended assembly state of the device holder. [14] Device holder according to claim 12 or 13, characterized by , that alignment openings are provided in the base bracket or adapter plate in which the receiving opening is located, and that alignment projections that are at least partially complementary to the alignment openings are provided on the grid plate. [15] Device holder according to one of claims 1-14, characterized by that the elongated holes and, if present, the receiving opening are provided in the adapter plate. [16] Device, in particular electronic device, with a device holder according to any one of claims 1-15. [17] Arrangement comprising a vehicle rail and a device, in particular an electronic device, attached to the vehicle rail, characterized by a device holder according to one of claims 1-15.

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