WO2019023724A1

WO2019023724A1 - Industrial control panel

Info

Publication number: WO2019023724A1
Application number: PCT/AT2018/060160
Authority: WO
Inventors: Thomas Wurm
Original assignee: Keba Ag
Priority date: 2017-07-31
Filing date: 2018-07-25
Publication date: 2019-02-07

Abstract

The invention relates to an industrial control panel (1) for an electronic control system for controlling, monitoring or programming industrial plants or machines, comprising - a housing (2); a graphical display (3) having a display surface (4) for the visualization of system-relevant conditions and/or control interfaces, the graphical display (3) being accommodated in the housing (2); a touch-sensitive input means (5) for an operator, which is superimposed to the display surface (4) of the display (3); and an at least partially transparent cover panel (6) which forms a touch-sensitive surface (7) of the industrial control panel (1). The industrial control panel is provided with at least one piezoelectric element (31) which acts upon the cover panel (6) such that the touch-sensitive surface (7) of the cover panel (6) can be moved by means of said piezoelectric element (31).

Description

Industrial control panel

The invention relates to an industrial control panel of an electronic control for operating, monitoring or programming of industrial installations or machines, as specified in claim 1.

Stationary control panels, which are integrated into industrial installations or machines in order to influence, monitor or program the respective process or control sequences, are known from the prior art. Control panels of the newer generation typically have a touch screen in which a high-resolution, graphic display is overlaid with a touch panel or another, preferably capacitive, touch-sensitive input means. Such control panels are increasingly structurally combined with a subcomponent of the overall control, in particular with a decentralized control unit, or combined to form a structural unit. Depending on the application or depending on the machine type, these control panels are mounted on the machine housing or installed in separately arranged cabinets or control panels such that their display and user interface is visible or accessible. Depending on the requirements, the rectangular display of the control panel is either permanently installed in portrait or landscape format. In addition, the operating or display level can be aligned vertically, or in particular in connection with control desks have an inclination of less than 90 ° relative to a horizontal plane, in particular be aligned slightly inclined. Such an industrial panel is known for example from DE 20 2015 004 149 Ul.

In the operation of machines with such industrial panels, the problem often arises that due to the absence of conventional control buttons, the control input made can only be determined by visual inspection of the industrial panel. The operator's gaze must be averted from the machine to be operated and the control panel must be observed. This leads to an increased security risk. The object of the present invention was to overcome the disadvantages of the prior art and to provide an industrial panel, by means of which the machine can be reliably operated. This object is achieved by an industrial panel according to the claims.

According to the invention, an industrial control panel is designed for an electronic control for operating, monitoring or programming industrial installations or machines. The industrial media panel includes:

a housing;

a graphical display having a display area for visualizing systemically relevant states and / or user interfaces, the graphical display being accommodated in the housing;

a touch-sensitive input means for an operator, which is superimposed on the display surface of the display;

- An at least partially transparent cover, which forms a touch surface of the industrial panel.

Furthermore, it is provided that at least one piezoelectric element is formed, which acts on the cover plate in such a way that the touch surface of the cover plate can be moved by means of the piezoelectric element.

An advantage of the inventive design of the industrial panel is that the operator by means of the touch surface haptic feedback can be conveyed. As a result, it is possible, for example, for the operator to reliably control a machine or a system without looking at the operating panel. This leads, surprisingly, to an increase in occupational safety, since the operator can direct his focus on the travel movements of the machine by the feedback of the touch surface.

Furthermore, it may be expedient if at least one force detection means, in particular a strain gauge, is coupled to the cover plate, in particular that the force detection means is arranged directly on the cover plate. The advantage here is that through this measure can be detected by an operator on the cover force exerted force. This makes it possible to determine various input commands not only by the position of the finger of the operator, but also trigger different input commands force-dependent.

Furthermore, it can be provided that the cover plate is opaque in a subregion or provided with an opaque layer, wherein the at least one piezoelectric element and / or the at least one force detection means is arranged in this opaque subregion. The advantage here is that the piezoelectric element or the force detection means are not visible from the outside as a result of this measure, and the industrial-control panel can thus have a high-quality appearance.

In addition, it can be provided that the opaque portion is subsequently formed on a side surface of the cover, wherein the at least one piezoelectric element and / or the at least one force detection means is arranged at a distance from the side surface of the cover. The fact that the piezoelectric element is arranged at a distance from the side surface of the cover, in particular has the advantage that when applying an acting force by means of the piezoelectric element on the cover plate, the cover bulges outward and this curvature or deformation of the cover by the user as a haptic feedback can be detected. The opaque portion of the cover forms a frame on the side surfaces of the cover. This opaque sub-area serves in particular as a visual screen for the underlying splice or for the underlying components. Also advantageous is an expression according to which it can be provided that the opaque

Layer is formed on the opposite to the touch surface underside of the cover. The advantage here is that the cover has a uniform appearance or a uniform surface finish by this measure on the touch surface. This is considered a sign of a high quality product.

According to a development, it is possible that the cover plate is deformable by means of the piezoelectric element. The advantage here is that by this measure to give a haptic feedback not the complete cover must be moved, but only in itself is deformed. As a result, the mass to be moved can be kept low, which leads to a reduced energy consumption in the piezo elements. In addition, the feedback of such a deformed cover can be well recognized by the operator. For example, it can also be provided that the piezoelectric element is arranged between the housing and the cover plate and is supported on the housing for deforming the cover plate. The advantage here is that the housing can serve as a repository for the piezoelectric element by this measure and the cover can thus be reliably deformed by means of the piezoelectric element.

Alternatively, it may be provided that the piezoelectric element is attached to the underside of the cover plate and a bending moment in the cover plate can be introduced by changing the length of the piezoelectric element. In addition, it can be provided that the cover is coupled by means of a double-sided adhesive strip with the housing, wherein the double-sided adhesive strip at least area is arranged circumferentially on the side surfaces of the cover and the housing is formed overlapping at least in the areas of the double-sided adhesive strip to the cover. The advantage here is that by means of the double-sided adhesive strip, the cover can be easily mounted in the housing and also may have a good grip in the housing. Another advantage of using a double-sided adhesive tape is that it is easy to handle and therefore easy to apply. The double-sided adhesive strip can rest on the housing in the region of the overlap, and the cover disc can rest on the opposite side of the adhesive strip.

Furthermore, it can be provided that the cover is inserted into a recess in the housing, wherein between the housing and a side surface of the cover, a gap is formed, which is filled by means of a flexible sealing compound, in particular a silicone. The advantage here is that by filling the gap with a flexible sealing compound, the cover is added flexibly relative to the housing, so that any different thermal expansion of the housing and cover can be compensated in the gap. Also deformations of the cover to give a haptic Feedbacks can be compensated by means of the flexible sealing compound. In particular, silane-modified polymer adhesives, which are also known as MS polymer adhesives, can be used. Such adhesives have good long-term stability and can be applied directly to the surface without pretreatment.

In a development, it can be provided that the double-sided adhesive strip is arranged circumferentially on the side surfaces of the cover disk and that the piezoelectric element is arranged at a distance from the double-sided adhesive tape on the cover disk. As a result, when the force is applied to the cover plate by means of the piezo element, the cover plate can be deformed, in particular curved, since a bending moment is applied to the cover plate as a result of the spacing between the piezo element and the adhesive strip.

According to a particular embodiment, it is possible that an adhesive layer is formed, by means of which the cover is coupled at least in the region of one of the side surfaces, preferably on that side surface on which the at least one piezoelectric element is arranged in addition to the double-sided adhesive strip with the housing. The advantage here is that the adhesive bond between the cover and the housing can be improved by this measure, which ensures that even with repeated Krafteinwir- effect of the piezo element on the cover, the cover does not dissolve from the housing. Particularly in the vicinity of the piezoelectric elements, high forces act on the cover, whereby this measure may be necessary.

According to an advantageous development, it can be provided that filling openings are formed in the housing and serve to introduce the additional adhesive layer. By means of the filling openings, the adhesive layer can be easily introduced into the housing when using a corresponding syringe when the cover plate is already glued to the housing. In particular, it can be advantageous if the double-sided adhesive strip has a recess which serves to receive the additional adhesive layer. The advantage here is that is arranged by this measure the additional adhesive layer in the region of the double-sided adhesive strip and thus enhance the effect of the double-sided adhesive strip can. In addition, the double-sided adhesive strip can serve to delimit the recess in order to be able to introduce the additional adhesive layer in a liquid or partially viscous state into the recess. Furthermore, it can be provided that the recess has an elongated extension and extends over a range between 95% and 70%, the width of the cover plate. The advantage here is that a good connection of the cover to the housing can be achieved by this measure. In addition, it can be provided that the opaque portion is formed circumferentially on the side surfaces of the cover. The advantage here is that a uniform appearance of the cover can be achieved by this measure.

Also advantageous is an embodiment according to which it can be provided that an extension of the opaque partial area on that side face of the cover disk on which the at least one piezo element and / or the at least one force detection means is arranged is greater than an extent of the opaque part Partial area on the remaining side surfaces.

This can be achieved that the piezoelectric element is not visible from the outside. According to a development, it is possible that a plurality of piezoelectric elements are formed, which are arranged at a distance from each other. The advantage here is that the haptic feedback can be distributed evenly on the touch surface by the use of multiple piezoelectric elements, which can be achieved that at a touch of the touch surface at different points a uniform and homogeneous haptic feedback to the operator are given can.

Furthermore, it may be expedient if the piezo elements are arranged next to one another on a straight line, wherein the straight line runs parallel to one of the side surfaces of the cover disk. The advantage here is that a uniform division of the piezoelectric elements is achieved by this measure. In addition, it can be provided that the double-sided adhesive strip on the side surface on which the at least one piezoelectric element is arranged and on the side surface opposite this side surface has a greater width than the width of the adhesive strip on the other two side surfaces. By this measure, a uniform curvature of the cover can be achieved when exposed by means of the piezo elements.

In addition, it may be provided that the touch-sensitive input means is formed on an underside of the cover plate opposite the touch surface. This has the advantage that the touch-sensitive input means can be moved with the cover disk. This ensures that the position of the finger can be detected at any time during movement of the cover plate by means of the piezoelectric elements.

Provided in a development that the display surface of the graphic display is arranged at a distance from the touch-sensitive input means. As a result, a damage to the touch-sensitive input means or the display surface of the display during movement of the cover can be avoided.

According to the invention, a method is provided for producing an industrial media panel. The method comprises the following method steps:

- Providing a housing;

- Inserting a graphic display in the housing;

- Providing an at least partially transparent cover, which forms a touch surface of the industrial panel;

- Applying at least one piezoelectric element and / or a force detection means on the underside opposite the touch surface of the cover plate;

- Applying a touch-sensitive input means on the underside of the cover;

- Inserting the cover into the housing. An advantage of the manufacturing method according to the invention is that a manufactured industrial panel can have a high longevity and thus can have a high quality. Furthermore, it can be provided that before inserting the cover into the housing, a double-sided adhesive strip is applied to the underside opposite the touch surface of the cover. Thus, the cover plate together with the double-sided adhesive strip arranged thereon can be inserted into the housing, whereby a good durability of the cover plate in the housing can be achieved.

In addition, it can be provided that after the insertion of the cover in the housing, an adhesive layer, in particular by means of filling openings, is introduced between the housing and the cover. The advantage here is that the adhesive layer can be introduced in a liquid or partially liquid state via the filling between the housing and the cover and thus can be well distributed in this space to achieve a uniform bonding of the cover in the housing.

The cover may be formed as an integral part of the touch-sensitive input means. Alternatively, it can be provided that the cover is designed as a separate component and the touch-sensitive input means is arranged on the underside of the cover or adhered thereto.

The cover may be formed of a transparent material, such as a mineral glass or a plastic.

For a better understanding of the invention, this will be explained in more detail with reference to the following figures. In each case, in a highly simplified, schematic representation:

Fig. 1 is a perspective view of an embodiment of an industrial panel; Fig. 2 is an exploded view of the industrial panel; Fig. 3 is a sectional view of the industrial panel. By way of introduction, it should be noted that in the differently described embodiments, identical parts are provided with the same reference numerals or identical component names, wherein the disclosures contained in the entire description can be mutatis mutandis to identical parts with the same reference numerals and component names. Also, the position information selected in the description, such as top, bottom, side, etc. related to the immediately described and illustrated figure and these position information in a change in position mutatis mutandis to transfer to the new location.

Fig. 1 shows a schematic representation of an embodiment of an industrial panel 1, which is used for operating, monitoring or programming of industrial equipment o machines. The industrial panel 1 is coupled to an electronic controller, or may include an electronic controller coupled to the equipment or machine to be operated. The industrial panel 1 comprises a housing 2, which is designed to receive the individual components of the industrial panel 1. In particular, it may be provided that the housing 2 is used for the shaping of the industrial-control panel 1 and for protecting the components installed in the industrial-control panel 1. The housing 2 can in principle be formed of any material which has sufficient strength to give the industrial control panel 1 sufficient dimensional stability and to protect the individual components of the industrial control panel 1 from environmental influences. In particular, it can be provided that the housing of the industrial panel 1 is made of a metallic material, such as stainless steel or aluminum. The housing 2 may be formed in one piece, or composed of several components.

The industrial panel 1 is preferably formed relatively large-sized and therefore rather for a stationary use or for a stationary installation in housings or wall ele- ments of machines, such as plastic processing machines, provided. Fig. 2 shows the embodiment of the industrial panel 1 in an exploded view, so that the individual components of the industrial panel 1 are visible.

As can be seen from FIG. 2, the industrial-control panel 1 comprises a graphics-capable display 3 for displaying status information of the system or machine. The graphics-capable display 3 is used in particular for outputting status information about the operating or process state of the controllable technical device on a display surface 4. In addition to a graphics-capable display 3, other visually detectable output means, such as. Signal lights, pointer instruments and the like. Be formed.

In particular, the graphical display 3 for the operator visible to the display surface 4, which is provided for the visualization of system-relevant conditions and user interfaces. The touch-sensitive input means 5 is superimposed on the display surface 4 of the display 3 and is at least partially transparent or translucent. The touch-sensitive input means 5 is thus provided for influencing control-technical processes or display contents of the display 3 by an operator. Preferably, it works according to the capacitive detection principle. Alternatively, however, other known from the prior art input or position detection technologies are possible. In a first embodiment, it is possible that a cover 6 as owner

Component is formed and the touch-sensitive input means 5 between the display surface 4 of the display 3 and the cover 6 is arranged. In particular, it may be provided that the touch-sensitive input means 5 is attached to the underside 8 of the cover 6.

The cover 6 is thus the external component and know a touch surface 7, which serves to enter commands by means of the finger of the operator. Such a structure can be found especially in projected capacitive touchscreens. Here, the touch-sensitive input means 5 uses two levels with a conductive pattern, in particular stripes or diamonds. The levels are isolated from each other. One level serves as a sensor, the other takes over the task of the driver. The essential advantage of this system is that the input device 5 is located on a side facing the touch surface 7. page 8 of the cover 6 may be arranged and the detection is projected through the cover 6 through. As a result, the input means 5 and the display 3 are protected by means of the cover 6. In a further embodiment, it can be provided that the touch-sensitive

Input means 5 simultaneously serves as a cover 6, which is the display surface 4 of the graphic display 3 upstream and which thus defines a touch surface 7.

As can be seen in particular from FIG. 2, the display 3 is accommodated in the housing 2. In particular, it is provided that the housing has a recess 9 in which the display 3 is accommodated.

Preferably, the side lengths of the recess 9 are sized larger than the side lengths of the display surface 4 of the display 3. The respective side lengths are related to a plane parallel to the display surface 4 of the display 3.

In particular, it can be provided that the display 3 has a rectangular extent. The display 3 thus has a width 10 and a length 11. Adapted to this, the recess 9 in the housing 2 likewise has a width 12 and a length 13. The width 10 of the display is preferably smaller than the width 12 of the recess 9. The length 11 of the display 3 is preferably smaller than the length 13 of the recess 9.

As further seen in FIG. 2, the cover 6 has a transparent portion 14 and an opaque portion 15. The transparent portion 14 is preferably arranged in the center of the cover 6 and is surrounded by the opaque portion 15. In particular, it can be provided that a length 16 of the transparent portion 14 of the cover 6 is approximately the same size as a length 11 of the display 3. Analogously, it can be provided that a width 17 of the transparent portion 14 of the cover 6 in about the same size is like a width 10 of the display 3.

Furthermore, it can be provided that the cover 6 is fixed by means of a double-sided adhesive strip 18 on the housing 2. In particular, it is provided that the housing 2 has an adhesive surface 19 to which the double-sided adhesive strip 18 adheres. In particular, it may be provided that the adhesive surface 19 is formed in a recess 20 of the housing 2, wherein the recess 20 is formed for receiving the cover 6. In particular, it may be provided that the touch surface 7 is flush with the housing 2. A length 21 of the cover 6 and a width 22 of the cover 6 are preferably smaller than the dimensions of the recess 20. Thus, the cover 6 can be easily inserted into the recess 20. The double-sided adhesive strip 18 is arranged in the opaque portion 15 of the cover 6. In the exploded view of FIG. 2, the cover 6 and the double-sided adhesive strip 18 is shown spaced from the housing 2, so that the internal components or the display 3 in the housing 2 are visible. The housing 2 and the display 3 are here shown in a view obliquely from above, so that the view of the display surface 4 of the display 3 falls. The cover 6 and the double-sided adhesive strip 18 are pivoted upward in the illustration according to FIG. 2, so that the underside 8 of the cover 6 or of the double-sided adhesive strip 18 is visible.

3 shows a detailed view of a sectional view of the industrial panel 1 according to the section line III-III of FIGS. 1 and 2.

The structure of the industrial panel 1 will be described below with reference to a synopsis of FIGS. 2 and 3.

Because the cover 6 has smaller dimensions than the recess 20 in the housing 2, a side surface 23 is arranged at a small distance from the housing 2 in the installed state of the cover 6, whereby a gap 24 between the housing 2 and the side surface 23 of Cover 6 results. This gap 24 is preferably filled with a sealing compound 25. The sealing compound 25 may for example be a silicone-like material, which has a high flexibility and achieves a good sealing effect. A depth 26 of the recess 20 for the cover 6 is preferably about the same size as a thickness 27 of the cover 6 and a thickness 28 of the double-sided adhesive strip 18 together. It can thereby be achieved that the touch surface 7 of the cover 6 terminates approximately flush with the housing 2.

Furthermore, it can be provided that the opaque portion 15 is formed by an opaque layer 29, which is arranged on the underside 8 of the cover 6. The opaque layer 29 can in this case be applied directly to the cover 6. In particular, it can be provided that the opaque layer 29 is applied to the cover 6 by means of a special printing process.

As can be seen particularly well from Fig. 3, it can be provided that the opaque portion 15 extends from one of the side surfaces 23 of the cover 6 to that area in which the display 3 is arranged extends. This will be referred to as the extension 30 of the opaque portion 15 hereinafter.

As can be seen from FIG. 2, it can be provided that the industrial-control panel 1 comprises piezo-elements 31 which act on the cover 6. In addition, force detection means 32 may be provided which detect a deformation of the cover 6. It can be provided that the piezo elements 31 and the force detection means 32 are arranged in an edge region of the cover plate 6. It is conceivable that the extension 30 of the opaque portion 15 on that side surface 23 of the cover 6 on which the piezo elements 31 and the force detection means 32 are arranged, is greater than the extension 30 of the opaque portion 15 on the remaining side surfaces 23 of the cover - By this measure, the piezo elements 31 and the force detection means 32 may be hidden by the opaque layer 29 and thus be hidden in the assembled state of the industrial panel 1 from the eyes of the operator.

The piezo element 31 serves as an actuator for moving the cover 6 and thus for generating a haptic feedback on the touch surface 7 of the cover 6. It can be provided that the piezo element 31 is fixed by means of an adhesive to the underside 8 of the cover 6. In other words, the piezoelectric element 31 may be disposed between the cover 6 and the housing 2. The piezoelectric element 31 can initiate a bending moment in the cover plate 6 by changing the length, for example by contraction or by expansion. In particular, it can be provided that the piezoelectric element 31 changes its length when it is subjected to an electrical voltage. By this change in length of the piezoelectric element 31, a curvature in the cover 6 can be generated. In particular, it is provided that the individual piezo elements 31 are arranged at a distance 34 from the side surface 23 and are arranged at a distance 35 from each other. The distance 34 of a piezo element 31 to the side surface 23 is greater than a width 36 of the double-sided adhesive strip 18 on the associated side surface 23. As a result, the piezo elements 31 are spaced from the double-sided adhesive strip 18. As a result of this measure, when the piezo element 31 acts on the cover plate 6, a curvature can be generated in the cover plate, as a result of which haptic feedback can be given. In particular, it may be provided that the distance 34 of the piezoelectric element 31 to the side surface 23 is between 5 mm and 200 mm, in particular between 35 mm and 70 mm.

2, it can be provided that the double-sided adhesive strip 18 on that side surface 23 on which the piezoelectric elements 31 are arranged has a width 36 which is greater than a second width 39 of the adhesive strip 18 at the 90 ° thereto standing side surfaces 23.

Furthermore, it can be provided that in the double-sided adhesive strip 18, a recess 37 is formed, which serves to receive an adhesive layer 38. The recess 37 is formed in the region of the piezoelectric elements 31. The additional adhesive layer 38 serves to ensure that the cover 6 does not detach from the housing 2 when force is applied to the cover 6 by means of the piezo elements 31. The adhesive layer 38 is preferably formed by an adhesive, which is introduced in the liquid state in the industrial panel 1 and then cured. In particular, it is provided that the adhesive layer 38 has a high strength. Furthermore, it can be provided that the adhesive layer 38 has a low elasticity. For introducing the adhesive layer 38 in the industrial panel 1, it can be provided that in the adhesive surface 19, a filling opening 40 is arranged, via which the adhesive layer 38 can be introduced into the recess 37. This can be done for example by means of a syringe. Furthermore, in the adhesive surface 19, a control opening 41 may be formed, via which the correct introduction of the adhesive layer 38 can be controlled. In particular, it can be provided that a plurality of filling openings 40 and control openings 41 are provided. Furthermore, it can be provided that the recess 37 forms a closed cavity for receiving the adhesive layer 38 in the double-sided adhesive strip 18 together with the underside 8 of the cover 6 and the adhesive surface 19.

As can be seen particularly well from FIG. 3, provision may be made for the piezoelement 31 or the force detection means 32 to be arranged in the opaque subregion 15 of the cover disk 6. The force detection means 32 may be formed in the form of a strain gauge, which serves to detect the deformation of the cover. Furthermore, it can be provided that the force detection means 32 is attached to the cover 6 by means of an adhesive.

Furthermore, it is conceivable that the force detection means 32 and the piezo elements 31 are arranged side by side on the cover 6.

2, a possible process sequence for producing the industrial panel 1 will now be described.

In a first method step, the individual components of the industrial panel 1 can be provided. In a further method step, the bottom 8 of the cover 6 can be provided with the opaque layer 29.

In a further method step, the piezoelectric elements 31 and the force detection means 32 can be fixed by means of an adhesive on the underside 8 of the cover 6. In addition, the touch-sensitive input means 5 can be fixed to the underside 8 of the cover 6. This can be done for example by means of an optical adhesive. In particular, it is provided that the touch-sensitive input means 5 at that area of the Bottom 8 of the cover 6 is fixed, in which the transparent portion 14 is formed.

Subsequently, the double-sided adhesive strip 18 can be adhered to the underside 8 of the cover 6. The double-sided adhesive strip 18 is in this case placed on the cover plate 6, that the recess 37 is in the vicinity of the piezoelectric elements 31. Of course, it is also conceivable that first of the double-sided adhesive strip 18 is adhered to the underside 8 of the cover 6 and then the piezoelectric elements 31 and the force detection means 32 are attached to the cover 6.

Subsequently, the cover 6 can be used with the piezoelectric elements arranged thereon 31 and force detection means 32 in the housing 2, wherein the double-sided adhesive strip 18, the cover 6 in the housing 2, in particular at the adhesive surface 19 holds. The cover 6 is in this case inserted into the housing 2 such that the gap 24 is formed between the cover 6 and the housing 2.

In a subsequent method step, the sealing compound 25 can be introduced into the gap 24 formed between the cover plate 6 and the housing 2. In a further method step, the adhesive layer 38 can be introduced into the recess 37 via the BefüUöffnungen 40 and the correct introduction of the adhesive layer 38 are checked by means of the control openings 41.

The adhesive layer 38 may be formed for example by an epoxy resin.

As can be seen from FIG. 3, provision can be made for the touch-sensitive input means 5 to lie directly against the underside 8 of the cover 6 in the assembled state of the industrial panel 1. In order to avoid collisions during the movement of the cover 6, it can be provided that the touch-sensitive input means 5 is arranged at a distance 42 from the display surface 4 of the display.

In Fig. 3, the activated state of the piezoelectric element 31 is shown in broken lines, wherein the resulting curvature of the cover 6 is visible. During operation of the industrial panel 1 it can be provided that by means of the touch-sensitive input means 5 that position at which the operator puts his finger on the touch surface 7 of the cover 6 is detected. By means of the force detection means 32, an active strength of the finger of the operator on the touch surface 7 can be determined. For this purpose, the deformation of the cover 6 is detected by the force detection means 32 and at the same time the position at which the finger touches the touch surface 7 is determined by means of the touch-sensitive input means 5. By knowing the geometric dimensions of the cover 6 or the rigidity of the cover 6, the position of the applied force and the force measured values determined at the force detection means 32 can thus be recalculated to the applied by the finger on the cover 6 impact force.

In order to be able to give the operator haptic feedback about the control commands which it has initiated, it is provided that the cover plate 6 is deformed by means of the piezoelement 31. Characterized in that the piezoelectric element 31 is arranged at a distance 34 to the side surface 23 of the cover plate 6, the cover plate 6 is deformed upon application of a force by means of the piezoelectric element 31, in particular bent. In this case, the piezoelectric element 31 can act on the cover disk 6 at a fixed frequency.

By means of the force detection means 32, in addition to the action force applied by the operator, the deformation introduced by means of the piezoelement 31 in the cover 6 can also be detected. In particular, it is conceivable that the piezoelectric elements 31 are driven in consideration of the values detected by the force detection means 32. Thus, it is possible, for example, that self-oscillations occurring in the cover 6 are compensated for by appropriate actuation of the piezo-elements 31. As a result, a haptic feedback uniquely identifiable to the operator on the touch surface 7 of the cover 6 can be generated. Furthermore, it is also conceivable that in the course of the production of the industrial panel, the cover 6 is set by the piezoelectric element 31 in different frequencies in motion, wherein the forces occurring are detected and recorded by the force detection means 32. These values detected by the force detection means 32 can be stored as so-called setpoint ranges in the control of the industrial-control panel 1, whereby the behavior of the industrial-control panel 1 or the cover 6 is stored when new.

During operation of the industrial panel 1, the values determined by the force detection means 32 can be compared with the stored target value ranges, which can be used to infer damage to the cover 6 or damage to the bonding of the cover 6 or damage to the housing 2.

The control of damage to a component of the industrial panel 1 can be carried out, for example, at periodic intervals, wherein the cover 6 is moved by means of the piezoelectric element 31 when the operator does not touch the touch surface 7 of the industrial panel 1. As an alternative or in addition to this, it can also be provided that the values determined by the force detection means 32 are compared with the stored desired value ranges during the presentation of a haptic feedback, the acting force exerted on the touch surface 7 by a finger of the operator being compared with the setpoint ranges is taken into account.

The safety measures described may be necessary, since especially the piezo elements 31 have high voltages during operation, and thus the breakage of the cover 6 or of any other component of the industrial control panel 1 would lead to an increased danger for the operator. Especially in connection with moisture, in the case of defective components, there may be a voltage flashover from the high-voltage-carrying components of the industrial-control panel 1 to the operator. The embodiments show possible embodiments, it being noted at this point that the invention is not limited to the specifically illustrated embodiments thereof, but rather also various combinations of the individual embodiments are mutually possible and this variation possibility due to Teaching for technical action by objective invention in the skill of those working in this technical field is the expert.

The scope of protection is determined by the claims. However, the description and drawings are to be considered to interpret the claims. Individual features or combinations of features from the illustrated and described different embodiments may represent for themselves inventive solutions. The task underlying the independent inventive solutions can be taken from the description.

All statements of value ranges in the present description should be understood to include any and all sub-ranges thereof, e.g. is the statement 1 to 10 to be understood that all sub-areas, starting from the lower limit 1 and the upper limit 10 are included, ie. all sub-areas begin with a lower limit of 1 or greater and end at an upper limit of 10 or less, e.g. 1 to 1.7, or 3.2 to 8.1, or 5.5 to 10.

For the sake of order, it should finally be pointed out that, for a better understanding of the structure, elements have been shown partly out of scale and / or enlarged and / or reduced in size.

Reference Display Industrial Control Panel 30 Extension Opaque Part Housing 31 Piezo element

Display 32 force detection means

Display area 33

touch-sensitive input with distance between piezo element side surface che

Cover plate 35 distance piezo elements to each other touch surface 36 width adhesive strips

Bottom 37 recess

Recess Display 38 Adhesive layer

Width display 39 second width adhesive strip length display 40 filling opening

Wide recess 41 inspection opening

Length recess 42 distance

transparent subarea

opaque section

Length transparent subarea

Wide transparent section

double-sided adhesive strip

adhesive surface

Recess cover plate

Length of cover

Wide cover

side surface

gap

sealing compound

Deep recess cover disc

Thick cover

Thick double-sided adhesive strip

opaque layer

Claims

Patent claims

An industrial control panel (1) for an electronic control for operating, monitoring or programming industrial installations or machines, comprising

- A housing (2);

- A graphical display (3), which has a display surface (4) for the visualization of system-relevant conditions and / or user interfaces, wherein the graphical display (3) is housed in the housing (2);

- A touch-sensitive input means (5) for an operator, which is superimposed on the display surface (4) of the display (3);

an at least partially transparent cover (6), which forms a touch surface (7) of the industrial panel (1),

characterized in that

at least one piezo element (31) is formed which acts on the cover plate (6) in such a way that the touch surface (7) of the cover plate (6) can be moved by means of the piezo element (31).

2. The industrial panel according to claim 1, characterized in that with the cover (6) at least one force detection means (32), in particular a strain gauge is coupled, in particular that the force detection means (32) is arranged directly on the cover (6).

3. industrial panel according to claim 1 or 2, characterized in that the cover (6) in a partial area (15) is opaque or provided with an opaque layer (29), wherein the at least one piezoelectric element (31) and / or at least one force detection means (32) is arranged in this opaque subregion (15).

4. The industrial panel according to claim 3, characterized in that the opaque portion (15) to a side surface (23) of the cover (6) is subsequently formed, wherein the at least one piezoelectric element (31) and / or the at least one force detection means (32). at a distance (34) from the side surface (23) of the cover (6) is arranged.

5. Industrial panel according to claim 3 or 4, characterized in that the opaque layer (29) on one to the touch surface (7) opposite bottom (8) of the cover (6) is formed.

6. industrial panel according to one of the preceding claims, characterized in that the cover (6) by means of the piezoelectric element (31) is deformable.

7. industrial panel according to claim 6, characterized in that the piezoelectric element (31) on the underside (8) of the cover (6) is fixed and by Längenände- tion of the piezoelectric element (31) a bending moment in the cover plate (6) can be introduced.

8. The industrial panel according to one of the preceding claims, characterized in that the cover (6) by means of a double-sided adhesive strip (18) is coupled to the housing (2), wherein the double-sided adhesive strip (18) at least partially circumferentially in the region of the side surfaces (23) of the cover (6) is arranged and the housing (2) at least in the regions of the double-sided adhesive strip (18) has an adhesive surface (19).

9. industrial media panel according to one of the preceding claims, character- ized in that the cover (6) in a recess (20) in the housing (2) is inserted, wherein between the housing (2) and the cover (6) has a gap ( 24), which is filled by means of a flexible sealing compound (25), in particular a silicone.

10. Industrial panel according to one of claims 8 or 9, characterized in that an adhesive layer (38) is formed by means of the cover plate (6) at least in the region of one of the side surfaces (23), preferably on that side surface (23) on the at least one piezoelectric element (31) is arranged, in addition to the double-sided adhesive strip (18) is coupled to the housing (2).

11. The industrial panel according to claim 10, characterized in that in the housing (2) filling openings (40) are formed, which serve for introducing the additional adhesive layer (38).

12. The industrial panel according to one of claims 10 or 11, characterized in that the double-sided adhesive strip (18) has a recess (37) which serves to receive the additional adhesive layer (38).

13. The industrial panel according to claim 12, characterized in that the recess (37) has an elongated extent and extends over a range between 95% and 70%, the width (22) of the cover (6).

14. Industrial panel according to one of claims 3 to 13, characterized in that the opaque portion (15) on the side surfaces (23) of the cover (6) is formed circumferentially.

15. The industrial panel according to claim 14, characterized in that an Er extension (30) of the opaque portion (15) on that side surface (23) of the cover (6) on which the at least one piezoelectric element (31) and / or at least a Kraftdetekti- onsmittel (32) is arranged, is greater than an extension (30) of the opaque portion (15) on the remaining side surfaces (23).

16. Industrial media panel according to one of the preceding claims, characterized in that a plurality of piezoelectric elements (31) are formed, which are arranged at a distance (35) to each other.

17. The industrial panel according to claim 16, characterized in that the Piezoe- elements (31) arranged next to one another on a straight line, wherein the straight line runs parallel to one of the side surfaces (23) of the cover (6).

18. The industrial-use panel according to claim 8, characterized in that the double-sided adhesive strip (18) is arranged on that side surface (23) on which the at least one piezoelement (31) is located and on the side surface (23) opposite this side surface (23) ) has a greater width (36) than the width (36) of the adhesive strip (18) on the other two side surfaces (23).

19. Industrial display panel according to one of the preceding claims, characterized in that the touch-sensitive input means (5) on one to the touch surface (7) opposite bottom (8) of the cover (6) is formed.

20. The industrial-use panel according to claim 19, characterized in that the display surface (4) of the graphic display (3) is arranged at a distance (42) from the touch-sensitive input means (5).

21. A method for producing an industrial media panel (1), in particular an industrial media panel (1) according to one of the preceding claims, characterized by the following method steps:

- Providing a housing (2);

- Inserting a graphic display (3) in the housing (2);

- Providing an at least partially transparent cover (6), which forms a touch surface (7) of the industrial panel (1);

- Applying at least one piezoelectric element (31) and / or a force detection means (32) on the opposite to the touch surface (7) underside (8) of the cover (6);

- Applying a touch-sensitive input means (5) on the underside (8) of the cover (6);

- Inserting the cover (6) in the housing (2).

22. The method according to claim 21, characterized in that prior to insertion of the cover plate (6) in the housing (2) a double-sided adhesive strip (18) on the touch surface (7) opposite bottom (8) of the cover (6) is applied ,

23. The method according to claim 21 or 22, characterized in that after insertion of the cover plate (6) in the housing (2) an adhesive layer (38), in particular by means of filling openings (40), between the housing (2) and the cover ( 6) is introduced.