BE1026757B1 - Assembly of an electronic device with a device housing and an electronic assembly - Google Patents

Abstract

An assembly of an electronic device (3) comprises a device housing (2) and an electronic assembly (1), which has a frame element (10) which is used to establish a connection between the electronic assembly (1) and the device housing (2) along an attachment direction (E ) can be attached to the device housing (2). In addition, a connecting device is provided which has a first pin element (12), which extends along the direction of attachment (E), for engagement in a first plug-in opening (203) and a second pin element (13), which extends along the direction of attachment (E), for engagement in a second Has plug opening (205), wherein the first pin element (12) in engagement in the first plug opening (203) along two perpendicular and perpendicular to the direction of attachment (E) spatial directions (X, Y) is fixed in the first plug opening (203) and the second pin element (13) is supported in the second plug-in opening (205) when engaging in the second plug-in opening (205) along one of the spatial directions (X), but not along the other of the spatial directions (Y).

Description

BE2018 / 5777 Assembly of an electronic device with a device housing and an electronic assembly

The invention relates to an assembly of an electronic device according to the preamble of claim 1.

Such an assembly comprises a device housing and an electronics module which has a frame element which can be attached to the device housing in order to establish a connection between the electronics module and the device housing.

Such an electronic device can, for example, take over control functions in the context of an industrial plant and can, for example, be combined with other electrical or electronic devices in order to take over a functional assembly, for example for performing control functions. Such an electronic device can, for example, be arranged on a mounting rail and combined with other electrical or electronic devices on such a mounting rail.

Such an electronic assembly can have, for example, a screen device which is attached to the frame element and can be connected to the device housing via the frame element. In the case of such an electronic assembly, there is a desire that the electronic assembly be held on the device housing with as little play as possible in the connected position, in order to avoid a relative movement between the electronic assembly and the device housing in the assembled position and to ensure that the electronics assembly is seated firmly on the device housing.

In the case of an electronic device known from US Pat. No. 8,346,184, a screen device is attached to a device housing and is latched to the device housing for this purpose.

US 7,869,106 discloses an electronic device in which a screen device is attached to a front side.

In a modular device combination known from EP 1 404 170 B1, an operating module is electrically coupled to a computer module.

2018/5777

BE2018 / 5777 The object of the present invention is to provide an assembly of an electronic device which provides a firm connection, which is as free of play as possible

Electronics module with the device housing enables.

This object is achieved by an object with the features of claim 1.

Accordingly, the assembly has a connecting device which has a first pin element which extends along the attachment direction for engaging in a first plug-in opening and a second pin element which extends along the attachment direction for engagement in a second plug-in opening, the first pin element engaging in the first plug-in opening is fixed in the first plug-in opening along two directions perpendicular to one another and perpendicular to the direction of attachment, and the second pin element is supported in the second plug-in opening when engaging in the second plug-in opening along one of the spatial directions, but not along the other of the spatial directions.

For the play-free connection of the electronics module to the device housing, it is proposed in the present case to use a connection device which, on the one hand, provides a fixed bearing and, on the other hand, a floating bearing by using two pin elements in combination with assigned plug openings, and thus fixing the electronics module in a play-free manner in a plane perpendicular to the direction of attachment enables. In particular, a fixed bearing is provided via the first pin element in engagement with the first plug-in opening, which fixes the electronic assembly in an (approximately) play-free manner along a plane spanned by two spatial directions perpendicular to the attachment direction relative to the device housing. On the other hand, a floating bearing is provided via the second pin element in engagement with the second plug-in opening, which supports the electronic assembly only along one spatial direction with respect to the device housing, but not along the other spatial direction. By engaging the first pin element in the first plug-in opening, the electronic assembly can thus be fixed against the device housing in a play-free manner against a translational movement in the plane perpendicular to the direction of attachment. Via the engagement of the second pin element in the second plug-in opening, a rotational movement around the first pin element can also be prevented, so that the electronic assembly is completely fixed in the plane perpendicular to the direction of attachment relative to the device housing.

2018/5777

BE2018 / 5777 Because the combination of the first pin element with the first insertion opening and the second pin element with the second insertion opening provides a fixed bearing on the one hand and a floating bearing on the other hand, overdetermination in the connection is avoided. This enables tolerance compensation and play-free determination, even with slightly varying tolerances of the electronic assembly and the device housing.

In one embodiment, the first pin element is fixed in the first plug-in opening when it engages in the first plug-in opening along a first spatial direction perpendicular to the mounting direction and also along a second spatial direction perpendicular to the first spatial direction and perpendicular to the mounting direction. When engaging in the first plug-in opening, the first pin element thus provides a fixed bearing which is supported in the first plug-in opening in a plane perpendicular to the direction of attachment. In contrast, the second pin element is spaced apart from the first pin element along the second spatial direction and is preferably only supported in the second plug-in opening along the first spatial direction, so that a rotational movement of the electronic assembly relative to the device housing around the first pin element is prevented via the second pin element. Because the second pin element, due to its support in the second insertion opening, realizes a floating bearing only along the second spatial direction, overdetermination in the connection is avoided.

In one configuration, the first pin element has a first contact section, which extends along the first spatial direction, for support in the first

Plug opening along the first spatial direction and a second contact section extending along the second spatial direction for support in the first

Plug opening along the second spatial direction. The first contact section and the second contact section can each extend longitudinally and crosswise to one another, so that via the first contact section and the second contact section there is contact of the first pin element with an edge section surrounding the first insertion opening along the first spatial direction and along the second spatial direction. The first pin element is thus fixed in the plug-in opening without play both along the first spatial direction and along the second spatial direction.

The first insertion opening has, for example, an at least approximately circular opening cross section.

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BE2018 / 5777

In contrast, in one embodiment, the second pin element has only one contact section, which extends along the first spatial direction, for support in the second plug-in opening along the first spatial direction, but is not supported in the second plug-in opening along the second spatial direction. When engaging in the second plug-in opening, the second pin element thus provides a floating bearing which only provides support along the first spatial direction and avoids overdetermination in the connection between the electronic assembly and the device housing along the second spatial direction.

The contact section of the second pin element can, for example, extend longitudinally along the first spatial direction. However, a second contact section crossed to the contact section is not present.

In this embodiment of the second pin element, the second plug opening, for example, like the first plug opening, can have a circular opening cross section.

Alternatively, however, the second plug-in opening can also be designed in the manner of an elongated hole and extend elongated along the second spatial direction. The floating bearing for the second pin element is thus (also) effected by shaping the second plug-in opening, in which case the second pin element - instead of a configuration with an elongated contact section - can also be designed as a pin with a circular cross-section.

In one configuration, the device housing has a body to which the frame element can be attached in order to establish the connection between the electronic assembly and the device housing. The body can, for example, have a box-like shape and can enclose further functional components. It is conceivable here that the body is designed to be attached to a mounting rail, for example. However, it is also conceivable that the body is designed to be attached to a higher-level assembly, for example a housing of an electrical or electronic device.

The connection of the frame element to the body of the device housing can be made, for example, via one or more latching elements which, when the frame element is attached to the body, produce a positive connection (along the attachment direction) between the frame element and the body. The

2018/5777

BE2018 / 5777 locking elements are elastically deformable and snap when the

Frame element on the body in engagement with the body, so that the frame element is positively attached to the body along the attachment direction.

In one embodiment, the device housing has an insertion opening which is shaped in the body and into which the frame element can be inserted for establishing the connection between the electronic assembly and the device housing. In this case, the frame element can have, for example, one or more web sections which come into engagement with the insertion opening when the frame element is attached to the body. The web sections can, for example, form an approximately square box and project from a flat frame section that extends along a plane perpendicular to the direction of attachment, such that when the frame element is attached to the body of the device housing, the web sections engage in the engagement opening and the frame section outside of the device housing comes into contact with the body.

In one embodiment, the first pin element and the second pin element are arranged on the frame element and project, for example, from the frame section along the attachment direction. In this case, the first plug-in opening and the second plug-in opening are formed on the body in such a way that when the frame element is attached to the device housing, the pin elements engage with the plug-in openings and thus fix the frame element with respect to the device housing without play.

However, other configurations and arrangements of the pin elements in cooperation with the plug openings are also conceivable. For example, the pin elements can be arranged on the body, while the plug openings are formed on the frame element. In yet another embodiment, one of the pin elements can be formed on the frame element and the other of the pin elements on the device housing in order to engage in an associated plug-in opening on the other component.

The electronics module can have a screen device, for example. By attaching the electronics module to the device housing, the screen device can thus be attached to the device housing, so that a screen is provided on the electronics device for the visual representation of information and possibly for entering control commands.

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The screen device can, for example, have a printed circuit board that is attached, for example, to a side of the screen device that points inward toward the interior of the device housing and that carries one or more electronic components. If the electronics module is attached to the device housing, the printed circuit board is enclosed in the interior of the device housing and thus protected from the outside. On the other hand, a screen of the screen device is visible from the outside, so that information can be displayed on the screen and control commands can be entered if necessary (for example in the case of a touch-sensitive design of the screen).

The idea on which the invention is based will be explained in more detail below with reference to the exemplary embodiments illustrated in the figures. Show it:

1 shows a view of an electronic assembly with a screen device for attachment to a device housing of an electronic device;

FIG. 2 shows a rear view of the electronic assembly according to FIG. 1;

3 shows a view of the electronic assembly when attached to a device housing of an electronic device;

4 shows a view of the electronics module in a position attached to the device housing, viewed from the interior of the device housing;

Figure 5 is a schematic view of two pin elements in engagement with associated plug openings. and

Fig. 6 is a schematic view of another embodiment of two

Pin elements in engagement with assigned plug openings.

1 and 2 show views of an electronic assembly 1 which has a frame element 10 and a screen device 11 fastened to the frame element 10. The screen device 11 is fixed, for example, to the frame element 10 by means of screws and is thus firmly connected to the frame element 10 such that the frame element 10 and the screen device 11 form a functional unit.

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As can be seen from the view according to FIG. 2, the screen device 11 has a circuit board 110 on which electronic components 111 are arranged. The circuit board 110 is connected to the frame element 10 on a rear side of the frame element 10, for example by means of screws, and is arranged on the back of a box formed by web sections 101, 103 on the back of a square frame section 100 of the frame element 10.

3 and 4, the electronics module 1 can be attached to a device housing 2 of an electronics device 3 along an insertion direction E in order to connect the electronics module 1 to the device housing 2. For this purpose, the electronic assembly 1 can be attached to a body 20 of the device housing 2 in the attachment direction E in such a way that the electronic assembly 1 with the box formed by the web sections 101, 102 into a molded one in the body 20

Insertion opening 200 engages and comes to rest with the frame section 100 of the frame element 10 outside the device housing 2.

Latching elements 102 are formed on ridge sections 101 extending parallel to one another in the form of outwardly projecting latching lugs which, when the electronic assembly 1 is attached in the attachment direction E to the body 20 of the device housing 2, engage with the edge sections 201 delimiting the insertion opening 200 and thereby form-fitting connection between the electronic assembly 1 and the device housing 2 of the electronic device 3, as can be seen, for example, from FIG. 4. If the electronics module 1 has been attached to the body 20 of the device housing 2, the electronics module 1 is thus positively connected to the device housing 2 via the frame element 10.

In order to fix the electronics module 1 in the attached position in a plane perpendicular to the direction of attachment E relative to the device housing 2 without play, the frame element 10 has a connecting device with two pin elements 12, 13 which extend inwards from the circumferential, square frame section 100 in the direction of the device housing 2 protrude in the manner of pins and, when the electronic assembly 1 is attached to the device housing 2 with associated plug openings 203, 205, engage at corner sections 202, 204 of the body 20 of the device housing 2 which protrude inward into the region of the insertion opening 200, as shown in FIG 4 can be seen.

2018/5777

BE2018 / 5777 The pin elements 12, 13 are in the region of indentations 104, 105 in the form of corner regions, which are formed inwardly by the web sections 101, 103

Project box located on the frame portion 100. The shape of the indentations 104, 105 is adapted to the corner portions 202, 204 of the body 20, so that in the attached position the corner portions 202, 204 come to lie in the region of the indentations 104, 105, as can be seen from FIG. 4.

The pin elements 12, 13 are in the one shown in FIGS. 1 to 4

Embodiment, designed differently, as shown schematically in Fig. 5, and take over different functions for clearance clearance in the plane perpendicular to the direction of insertion E.

One pin element 12 thus has contact sections 120, 121 which extend crosswise to one another and provide support in the associated plug-in opening 203 along both a first spatial direction X and a second spatial direction Y, so that the electronic module 1 counteracts a translational one via the pin element 12 Movement along both spatial directions X, Y relative to the device housing 1 in the western is supported without play. In this way, the pin element 12 provides a fixed bearing in the connection of the electronic assembly 1 to the device housing 2.

In contrast, the other pin element 13 has only one contact section 130, which serves to support the pin element 13 along the first spatial direction X in the associated plug-in opening 205. Along the other, second spatial direction Y, the pin element 13 is not supported in the plug opening 205. Because the peg element 13 is spaced apart from the peg element 12 in the second spatial direction Y, a rotational movement around the peg element 12 can be prevented in this way by supporting the peg element 13 in the associated plug-in opening 205 along the first spatial direction X, so that the electronic assembly 1 perpendicular to the direction of attachment E against all degrees of freedom, essentially free of play to the device housing 2.

The combination of a fixed bearing created via the pin element 12 and a floating bearing created via the pin element 13 thus creates a backlash-free support for the electronic assembly 1 with respect to the device housing 2, while avoiding overdetermination in the connection between the

2018/5777

BE2018 / 5777 electronics module 1 and the device housing 2. This enables a play-free determination even within the scope of existing tolerances.

5, the plug openings 203, 205 are each formed with a circular opening cross section. The direction-dependent support is provided via the contact sections 120, 121, 130 of the pin elements 12, 13. In an alternative embodiment, shown schematically in FIG. 6, it is also possible to design the pin elements 12, 13 each as pins with a circular shape

Form cross-section and provide a direction-dependent support via the shape of the plug openings 203, 205. For example, the plug opening 203 assigned to the pin element 12 can have a circular opening cross section and thus support the pin element 12 along both spatial directions X, Y. In contrast, the plug opening 205 assigned to the pin element 13 can be designed as an elongated hole extending longitudinally along the second spatial direction Y, so that the pin element 13 is supported in the plug opening 205 only along the first spatial direction X.

The idea on which the invention is based is not limited to the exemplary embodiments described above, but can in principle also be implemented in a completely different manner.

For example, a connecting device of the type described here can be used to connect any electronic assemblies to an associated device housing. In this respect, such a connection is not limited to a screen device.

A combination of a fixed bearing with a floating bearing can also be provided by other configurations and combinations of pin elements. In particular, it is conceivable to arrange the pin elements on the side of the device housing and to form the associated plug-in openings on the side of the electronic assembly. It is also conceivable and possible to arrange the pin elements on different sides, namely on the one hand on the side of the device housing and on the other hand on the side of the electronic assembly, so that the pin elements are attached to different assemblies.

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Reference list

Electronics assembly

Frame element

100 frame section

101 bridge section

102 locking elements

103 web section

104, 105 indentation (corner jumping inwards)

Screen setup

110 circuit board

111 electronic components

Pin element

120 plant section

Pin element

130 plant section

Device housing

body

200 insertion opening

201 edge section

202, 204 projecting portion

203, 205 plug opening

Electronic device

E Approach direction

Claims (13)

1. assembly of an electronic device (3), with a device housing (2) and an electronic assembly (1) having a frame element (10) for establishing a connection between the electronic assembly (1) and the device housing (2) along an attachment direction (E) can be attached to the device housing (2), characterized by a connecting device which has a first pin element (12) which extends along the attachment direction (E) for engaging in a first plug-in opening (203) and one which extends along the attachment direction (E) , second peg element (13) for engaging in a second plug opening (205), the first peg element (12) engaging in the first plug opening (203) along two directions perpendicular to each other and perpendicular to the direction of attachment (E) (X, Y ) is fixed in the first plug opening (203) and the second pin element (13) engages in the second plug opening (205) along one of the spatial directions (X), but not along the whose spatial directions (Y) are supported in the second insertion opening (205). 2. Module according to claim 1, characterized in that the first Pin element (12) when engaging in the first insertion opening (203) along a first spatial direction (X) perpendicular to the direction of attachment (E) and also along a perpendicular to the first spatial direction (X) and perpendicular to Approach direction (E) standing, second spatial directions (Y) in the first Plug opening (203) is fixed, wherein the second pin element (13) along the second spatial direction (Y) is spaced from the first pin element (12). 3. An assembly according to claim 2, characterized in that the second pin element (13) is only supported along the first spatial direction (X) in the second insertion opening (205) when engaged in the second insertion opening (205). 4. An assembly according to claim 2 or 3, characterized in that the first pin element (12) extends along the first spatial direction (X), the first contact section (120) for support in the first insertion opening (203) along the first spatial direction (X) and has a second contact section (121) extending along the second spatial direction (Y) for support in the first plug-in opening (203) along the second spatial direction (Y). 2018/5777 BE2018 / 5777 5. Module according to one of claims 2 to 4, characterized in that the second pin element (13) has a along the first spatial direction (X) extending section (130) for support in the second insertion opening (205) along the first spatial direction (X) has, but is not supported along the second spatial direction (Y) in the second insertion opening (205). 6. Module according to one of claims 2 to 5, characterized in that the second insertion opening (205) is designed as an elongated hole along the second spatial direction (Y). 7. Module according to one of the preceding claims, characterized in that the device housing (2) has a body (20) to which the frame element (10) for establishing the connection between the electronic assembly (1) and the device housing (2) can be attached . 8. The assembly according to claim 7, characterized in that the frame element (10) has at least one latching element (101) for latching with the body (20) in a position attached to the device housing (2). 9. An assembly according to claim 7 or 8, characterized in that the device housing (2) has an insertion opening (200) formed in the body (20) into which the frame element (10) can be inserted. 10. The assembly according to claim 9, characterized in that the frame element (10) has a frame section (100) which extends flatly along a plane perpendicular to the direction of attachment (E) and at least one web section (projecting from the frame section (100) along the attachment direction (E). 101, 103) for engaging in the insertion opening (200). 11. The assembly according to one of claims 7 to 10, characterized in that the first pin element (12) and the second pin element (13) are arranged on the frame element (10) and the first insertion opening (203) and the second insertion opening (205) the body (20) are shaped. 12. Module according to one of the preceding claims, characterized in that the electronics module (1) has a screen device (11). 2018/5777 BE2018 / 5777 13. An assembly according to claim 12, characterized in that the screen device (11) has a printed circuit board (110) with at least one electronic component (111) attached to it.