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    • 专利摘要:
    The invention relates to a mobile handheld terminal (1) for industrial control. In this case, at least one display (6) is formed, which is at least partially overlaid by a membrane keyboard (8). The membrane keyboard (8) is glued in its edge or peripheral portions with the first housing part (3) and has a plurality of transparent or translucent executed input keys (9). In the first housing part (3) is formed opposite the housing front side (5) recessed receiving recess (11) for receiving at least the display (6), wherein a receiving depth of the receiving recess (11) is dimensioned slightly larger than a height of the display (6) , Between bottom boundary surfaces of the receiving recess (11) and the back (16) of the display (6), or between wall boundary surfaces (17) of the receiving recess (11) and side surfaces (18) of the display (6) is a viscous in the processing state, solidifying Balancing mass (14) introduced by which balancing mass (14) the display surface (10) of the display (6) with respect to a reference plane (19) of the first housing part (3) is aligned and supported.
    公开号:AT14250U1
    申请号:TGM319/2012U
    申请日:2012-08-07
    公开日:2015-07-15
    发明作者:Gerhard Etlinger
    申请人:Keba Ag；
    IPC主号:
    专利说明:

    Description: The invention relates to a mobile hand-held operating device for an industrial control, as specified in claim 1.
    WO 2003/001393 A2, which is based on the applicant, describes a generic, mobile handheld terminal for an industrial control, which comprises a display as optical output means and a plurality of structurally independent, control-technical input elements. This handheld terminal has a multi-part housing, wherein in the first housing part, which defines the front and the operator faces in the course of operations, a large-scale breakthrough for a touch screen is ausge¬ formed. The clear cross-sectional area of this breakthrough is dimensioned somewhat smaller than the size of the display surface of the touch screen or the display used for this purpose. Viadiesen breakthrough is the inside of the display arranged display except its outermost edges visible. In this case, a touch-sensitive input panel (touch panel) is structurally superimposed on the display, whereby the so-called touch screen is completed. The planar, touch-sensitive input panel is transparent or translucent, so that the visualizations on the display surface of the underlying display of the Operator are visible. The edge portion around the opening in the front of the housing is provided with a cord-shaped sealing element, against which the planar surface of the input panel sealingly abuts, so that penetration of dirt or moisture into the housing interior is avoided. The touch-sensitive input surface of the input panel is recessed relative to the front side or plastic surface of the first housing part, in particular formed so as to spring back relative to the front side of the housing. A membrane keypad with haptic detectable or input tactility enhancing input keys is provided away from the touch screen and separated from the touch sensitive input panel, respectively.
    Due to the specified installation measures for the display a particularly robust or shockproof handheld terminal for industrial control systems is achieved. However, the corresponding implementation measures are relatively expensive and thus expensive and require a certain minimum size of the housing, whereby these measures are not applicable to all types of handheld devices.
    The present invention has for its object to provide a mobile handheld terminal for industrial controls, which allows a software technical assignment of functions at least to a part of its input elements, at least single of these input elements should also provide a tactile actuation feedback corresponding hand-held device should be as simple and inexpensive as possible despite high quality standards.
    [0005] This object of the invention is achieved by the measures according to claim 1. Advantageous in this case is that this hand-held operating device has a special membrane keyboard, in particular a so-called "snap-hook foil", which is provided for providing a tactile input or operating signal. Feedbacks is formed. This allows a somewhat "blind" or as intuitive and relatively fail-safe operation of the handheld. The at least partially transparent or translucent trained membrane keypad is the display superimposed so that the best possible function or a reliable interaction between the individual components is guaranteed , Among other things, a particularly flexible or, in particular, an adaptive function or purpose identification of the corresponding input keys can thereby be achieved. An advantage of this transparency is also the fact that in a simple manner a reliable and permanent sealing of the housing interior with respect to the outside environment is made possible. The penetration of dirt or liquids and any impairment of the electrotechnical components are thereby reliably prevented, at least in the region of the input means embodied as a foil keyboard. A particular advantage of the measures according to the invention lies in the fact that, despite this sandwich-type structure, optimum interaction is achieved from a display and from a membrane keypad overlaid on the display, in particular a functional module functioning in the long term can be guaranteed. In particular, the use of a Maßtoleran¬zen compensating leveling compound in the component assembly or transition region between the housing and the functional assembly of membrane keypad and display a long-term flawless or plannemäße seal between the membrane keypad and the housing is achieved. After the membrane keyboard is glued to the housing in its outer edge or peripheral portions and this bonding - in addition to a possible holding or Verbindungs¬ function - above all, the tightness between the membrane keyboard and the housing, in particular with respect to the surfaces or To ensure adhesive surfaces, is a Exaktebzw. Tolerance-free relative positioning of particular advantage. By using the compensation mass, it is possible in particular to avoid or minimize adverse strains on the membrane keyboard relative to the underlying display or relative to the housing. In addition, if necessary, disadvantageous gap formations or interspaces and thus incomplete support zones between the membrane keyboard and the display area of the display can be kept back. This also promotes the achievement of a plan or proper bonding of the outer edge portions of the membrane keyboard with the housing and thus a long-term reliable seal. In particular, bonding is achieved over the entire, planned bonding surface, which, in addition to a good holding force, also ensures optimum sealing due to a continuous or sufficiently wide adhesive surface. In particular, this causes tension-induced air bubbles in the bonding sections or gradual detachment tendencies of the membrane keyboard to be obstructed relative to the housing. Overall, a particularly user-friendly, extremely robust and yet as cost-effectively producible handheld control device for industrial control environments is achieved.
    Also of advantage are the measures according to claim 2, since thereby the clear Wei¬ten the receiving recess can be sized larger than the corresponding Au¬ßenabmessungen of the display. As a result, despite certain dimensional tolerances or variant designs of the display housing or despite production-related tolerances of the receiving recess, the display can be inserted into the receiving recess without jamming. Nevertheless, possibly occurring and comparatively narrow gaps between the side wall of the display and the boundary walls of the receiving recess are concealed by means of the foil keyboard and thus not disturbing at all. Furthermore, the installation of dirt in the area of the covered gap is prevented. In addition, defined bonding surfaces between the membrane keypad and the housing are thereby created, which bonding surfaces can meet the requirements for the required holding or adhesive force and the requirements for an absolutely reliable sealing.
    Also of advantage are the measures according to claim 3, as this completes the surface of the membrane keyboard at least approximately flush with the adjacent surface portions of the housing. In particular, this avoids transition edges or abrupt surface transitions between the membrane keyboard and the adjacent surface portions of the housing. Consequently, the risk of detachment tendencies of the membrane keypad or. further reduced by the cover sheet and the robustness of the handheld terminal are zus¬lich increased.
    The measures according to claim 4 ensure a straight or ebenflächi¬gen transition of the top of the membrane keyboard, starting from the input section above the display surface of the display in the direction of the first housing part. In particular, graduated or abrupt transitions of the membrane keypad in the transition region between the expediently supporting display surface of the display and the likewise supporting or adhesive surface of the housing part are thereby avoided. Consequently, the membrane keypad, starting from the display section or starting from its input surface, can pass without curvature or flat in the direction of the housing part, in particular to its adhesive or support surfaces. This favors, as explained above, a possible intensive and long-term reliable sealing between the membrane keyboard and the Gehäu¬seteil. As a result, expansion folds in the membrane keypad in the transition section to the housing can also be dispensed with. Additional edges on the surface of the membrane keyboard, which accelerate the accumulation of dirt and cause increased sensitivity of the surface of the membrane keyboard with respect to scratches or damaged areas, can thereby be avoided in an advantageous manner.
    By the measures according to claim 5, a sufficiently stable Einbettungbzw. Holding the display in the receiving recess scored. By means of the openings in the receiving recess, a sufficiently intensive or process-stable backfilling of the display, in particular of its housing or rear side, with Ausgleichsmasse möglich.In.Inbesondere this can be a reliable and easy handling assembly and Einbet¬tung the display or the functional assembly comprising display and membrane keyboard are achieved.
    Also advantageous are the measures according to claim 6, since this especially when the balancing weight has elastomeric properties, this can meet a shock-absorbing Funk¬tion or a Gehäuseverwindungen at least partially receiving or balancing function. In this respect, the robustness of the handheld terminal can be further improved and the relatively fragile display better protected against damage or Überberbeanspruchungen. In addition, the quasi-punctual support of the display in the receiving recess improves the equalization of dimensional or component tolerances of the display or the receiving recess. The alternative use of structurally slightly different and otherwise technically comparable displays of different manufacturers is made possible without adaptation or variant formation for the first housing part and thus contributes to the cost reduction.
    The robustness of the manual control unit, in particular the damage protection for the display, can be further increased by the measures according to claim 7. In addition to equalizing dimensional tolerances or component tolerances, the balancing mass can also assume a shock-absorbing function, a compensation function with respect to torsions or relative displacements, as well as an adhesive and holding function. The elastic compensation movement between the display and the housing, which is further made possible by the feature features, also prevents distortion or distortion of the component sequence due to different coefficients of expansion as the housing heats up during operation. This multiple functionality of the balancing mass achieves an optimized performance and cost ratio.
    The measures of claim 8 are also advantageous, since a multiplicity of input elements can be implemented with a plate-shaped or planar-shaped, matrix-based position detection sensor. In particular, a plurality of input keys, for example, more than 16 touch-based, but tactile-perceptible input keys, can be implemented in the hand-held device in a cost-effective and simple manner. The mechanical robustness of a touch-sensitive, plate-shaped position detection sensor, in particular of a so-called matrix touch panel, is high in comparison to separately formed, electromechanical input actuators. In addition, a touch-based input panel is particularly compact or space-saving integrated into the handheld terminal. In this case, the cover film ensures the view, which is particularly advantageous for the operating ergonomics, of at least individual display sections of the display arranged thereunder. As a result, relatively compact and yet powerful and user-friendly as well as cost-effective hand-held operating devices can be created thereby.
    An advantageous embodiment of the membrane keyboard is specified in claim 9. Accordingly, the membrane keyboard is formed by a touch-sensitive input panel in the manner of a plate-shaped position detection sensor which has a structured cover film on its sensor surface and thus ensures tactile actuation feedback. In particular, the detection of finger positioning or input commands is thereby accomplished by a position detection sensor whose sensor surface is coated with a relief-like structured cover film for providing a tactile detectable mechanical actuation or input feedback. The correspondingly constructed membrane keypad thus enables reliable detection of operator-side actuating actions with simultaneous actuation feedback to the operator, after these input elements have a tactilely perceptible actuation path. As a result, the ease of use can be increased and at the same time the structural complexity of the handheld terminal can be kept relatively low.
    A further advantage is also an embodiment according to claim 10. Special further advantages derer in connection with claim 9. In particular, a high operating ergonomics and error safety are achieved by the elastically yielding bulges in the cover sheet in interaction with a capacitive Touch panel. This is primarily due to the fact that capacitive touch panels essentially respond to the resulting actuating surface or to the immediate vicinity of a finger during the actuation and do not respond to an acting actuating force, as is the case, for example, in the case of a resistively evaluating touch sensor would. As a result of the yielding bulges in the cover foil, the operator can position the finger according to plan, even before the actual triggering of a function. put on the key and then without further visual control, the respective function by increasing the operating force-solve. This possibility is of crucial importance for the direct operation of machines, in which the view should be directed to the respectively influenced machine parts. Unintentional or too early triggering by mere touching of an operating field or triggering an incorrect function by sliding the finger to an adjacent button during an operation without looking at the keypad is therebybzw. held back. In addition, the use of wear-prone and completely transparent contact-type actuators of conventional membrane keypads is thereby obtained and the input function is achieved by means of the extremely durable, robust and optically transparent capacitive touch panels.
    By the measures according to claim 11, penetration of dust or of dirt particles between the display surface of the display and the plate-shaped position detection sensor is avoided or held back. As a result, a permanently impeccable appearance and a long-term undisturbed function of the functional assembly comprising the display and the touch-sensitive, plate-shaped position detection sensor are achieved. A particular advantage of these measures is also that the touch-sensitive position detection sensor or the touch-sensitive input panel and the display can be constructed relatively close to each other. As a result, parallax errors between the translucent position detection sensor and the display surface of the display can be eliminated or kept as low as possible, so that the ergonomics and safety against incorrect operation can be increased. Insbeson¬dere by a particularly preferred bonding of the position detection sensor with the display even before the introduction of the leveling compound both a precisely fitting Überla¬gerung of display and position detection sensor allows and is further already achieved a provisional fit fixing the display to the introduction and final consolidation of the balancing mass and thereby a allows reliable, rapid and cost-effective Zu¬sammenbau.
    By the measures according to claim 12, a durable and reliable sealing of the housing against the outside environment is achieved. In particular, in the transition section, starting from the input field of the membrane keypad in the direction of the housing, a reliable protection against the undesired penetration of dirt or liquids is ensured. In addition, the membrane keypad can be connected to the housing for long-term stability and tear-off.
    By the measures according to claim 13, a handheld device is achieved, which has the required robustness or impermeability for industrial environments, provides a good operability by eintaktiles input feedback, and at the same time is possible to produce inexpensively. Due to the planned, in particular step-free installation of the comparatively stiff membrane keyboard or its covering film across the gap between the side wall of the receiving recess and the display, the occurrence of continuous or in the course of use, in particular in the operation of repetitive vertical forces in relation on the adhesive surface in the vicinity of the bridged gap prevented. In this way, detachment tendencies of the membrane keypad or its cover foil against the housing are likewise kept in mind.
    By the measures according to claim 14 it is ensured that at each position of the touch-based input means, in particular on each somewhat simulated Einga¬betaste, there is a respective identical actuation path or a respective uniform actuation behavior exists. In particular, unequal actuation paths or different actuation feedbacks of the individual input keys are thereby avoided. Consequently, despite a matrix-like input field, a respectively uniform input behavior and thus a high-quality handheld terminal can be achieved. In addition, the stepless transition or the planar transfer of the cover film starting from the position detection sensor to the attachment surfaces, in particular to the supporting and adhesive surfaces on the housing, ensures a long-term reliable connection and sealing between the membrane keyboard and the housing sections located thereunder, in particular with respect to the housing recess. These effects are achieved primarily by the particularly exact and relatively tension-free positioning of the membrane keypad or the cover foil with respect to the underlying display and with respect to the adjacent housing sections. In addition, parallax errors are avoided or kept at a disadvantage, whereby the operating safety and also the operating ergonomics be improved.
    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 simplified and schematic representation: [0021] FIG. 1 shows an exemplary embodiment of a manual control device for control applications with a view towards the front of the housing and in a perspective view; [0022] FIG. 2 shows the first housing part of the hand-held operating device according to FIG. 1 defining the housing front side with the membrane keypad removed and the display removed; 3 shows a cross section through the housing front part according to FIG. 2, cut along the lines III-III in FIG. 2; FIG. Fig. 4 is an exploded view comprising the first housing part, the display and the display overlaid membrane keyboard in cross section; [0025] FIG. 5 shows the elements according to FIG. 4 in the assembled state after the introduction and application of compensating mass.
    By way of introduction, it should be noted that in the differently described embodiments, the same parts with the same reference numerals and the same component names are verse¬, the revelations contained throughout the description can be applied mutatis mutandis to the same parts with the same reference numerals and component designations. Also, the location information chosen 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.
    In Fig. 1, an embodiment of an inventively constructed, elektrotechnischen handheld terminal 1 is illustrated. Such a hand-held operating device 1 is dimensioned in terms of its size or weight so that it can be portable so that it can easily be moved by an operator to different places of use or easily moved into varying positions of use. This mobile, elekt¬ technical hand-held device 1 represents a functional part of an industrial control, in particular a machine or robot control. The manual control unit 1 serves at least for monitoring and / or influencing operating conditions or processes of the industrial control or a corresponding control system - Observation functions, this mobile handheld device 1 may also be provided for the programming of control processes.
    The hand-held operating device 1 can be connected to a corresponding, data-technical communication interface of an industrial controller via a data communications interface (not shown). The data technology coupling between the hand-held terminal 1 and the corresponding industrial control can be carried out by wire or cable, or can also be implemented wirelessly, in particular by radio technology, as is known from the prior art.
    A housing 2 of the control-engineering, mobile hand-held operating device 1 is designed at least two or more parts. The housing 2 thus comprises a first housing part 3 and at least one further housing part 4. The housing parts 3, 4 form a cavity as planned according to the plan, which is provided for receiving a plurality of electrical or electronic components required in each case. Preferably, the housing parts 3 are formed by injection-molded parts made of plastic. The first housing part 3 defines at least partial sections of the front side or the housing front side 5 of the housing 2. At least one of the housing parts 3, 4 is designed shell-shaped. For this purpose, this has an approximately plate-shaped base element with webs formed on its peripheral portions or wall elements integrally formed on the base element.
    As further best seen from a synopsis of Fig. 1 to 5 can be seen, the mobile, control-related manual control unit 1 at least one display 6, 7 for software-controlled visualization of characters, graphics or colors. According to the illustrated embodiment, two structurally independent, independent displays 6, 7 are formed on the handheld terminal 1. In this case, the first display 6 is at least partially superimposed by a membrane keyboard 8 structurally. The further display 7, which, like the first display 6, can be designed as an LCD display, serves to visualize control states or operating data of the machine to be operated or of an industrial robot. At least the further display 7 for the visualization of operating or state data is executed as a graphic display or as a character or dot matrix display.
    The preferably likewise graphics-capable executed display 6, which is at least partially superimposed by the membrane keyboard 8, for example, starting from the front side of the housing 5 by an operator not directly accessible, but covered by the keyboard 8 or overlaid structurally. The membrane keyboard 8 forms a Mehr¬ number of transparent or translucent executed input keys 9. Operating states of the manual operating device 1 and / or the machine or manipulator unit which can be controlled or monitored thereby can be influenced or changed by means of these input keys 9. In particular, the input keys 9 are used to influence the technical data of technical control processes or states of the handheld terminal 1 and / or the control system coupled thereto. After the membrane keypad 8 is at least partially transparent or translucent executed, in particular translucent at those positions, at which input keys 9 are present or implemented, zumin¬dest subsections of the visualizations on the underlying display 6 by a Bedienper¬son perceptible , In particular, by an operator at least partial representations can be detected visually on a display surface 10 of the display 6. For example, the membrane keypad 8 can have alternating opaque and translucent sections, wherein the translucent sections preferably represent or define the actuating surfaces of the input channels 9. The translucent sections of the membrane keypad 8 are therefore typically circular, square or rectangular.
    By this superimposition of a partially transparent and opaque executed keyboard 8 and a software-controlled, preferably graphical display 6 so-called "softkeys", especially software technically adjustable input keys 9 or functionally varying command or input keys can be created in a simple manner is provided for the display or visualization of symbols or colors and thus for the distinction or identification of the input keys 9. These soft key entry keys 9 may trigger different functions and / or signal the respective switch states. The graphic and / or color coding of the various input keys 9 takes place via the underlying display 6, whereby a simple identification or retrieval of the various input keys 9 is made possible for the operator. The foil keyboard 8, however, is provided for detecting input commands of the operator and is connected to the control device, not shown, of the handheld terminal 1 or with an external control device for data processing purposes. Preferably, the membrane keyboard 8 in the course of actuation of the various input buttons 9 tactually perceptible actuation feedback for the operator, as will be explained in detail below.
    At least the first display 6, which is the foil keyboard 8 quasi underlaid, is inserted into a receiving recess 11 of the housing 2. The receiving depression 11 is set back relative to the housing front side 5 of the first housing part 3 or arranged backwards. This means that the receiving recess 11, starting from the housing front side 5 visible or accessible to the operator, springs back in the direction of the rear of the housing, as is best seen from a combination of FIGS. 2, 3. According to the invention, this is a cuboid receiving recess 11 is dimensioned such that at least the display 6 as completely as possible, preferably in its entirety, can be accommodated therein. This means that the display surface 10 of the display 6 at the insertion of the display 6 in the receiving recess 11 at least partially below an upper boundary edge 11a of the receiving recess 11 to a recording depth 12 of the receiving recess 11 would come if the display 6 would not be supported or supported by a balancing mass 14 within the Aufnahmever¬tiefung 11. In particular, between the bottom-side support or boundary surfaces 15 of the receiving recess 11 and the back 16 of the display 6, or between wall-side boundary surfaces 17 of the receiving recess 11 and side surfaces 18 of the display 6 in the processing state viscous, verest¬tigende balancing mass 14 is introduced.
    These in the course of the introduction or processing pasty or viscous balancing mass 14, which hardens or hardened gradually after the introduction, holds the display 6 and its display surface 10 with respect to a planned target or Reference plane 19. Preferably, the display surface 10 of the display 6, or else einonstige reference surface of the display 6 during assembly exactly in the Referenz¬ebene 19 or parallel to the reference plane 19 is accurately positioned or aligned and then permanently fixed by the balancing mass 14. The reference plane 19 is predefined with respect to the first housing part 3 and may be defined by the upper boundary edges 11a of the receiving recess 11 or by another plane in relation to the housing front side 5. By this balancing mass 14, which can vary in thickness or layer thickness easily, a reliable and practical tolerance compensation is created. In particular, it is ensured by these different tolerances equalizing bzw.annullierende balancing mass 14 that the display surface 10 of the display 6 on other or parallel to the predefined setpoint or reference plane 19 is aligned exactly and according to schedule or aligned during assembly exactly and according to schedule and can be fixed. This is true even if there are inherent and inherently fluctuating component tolerances, in particular with regard to the preferably injection-molded housing 2 made of plastic and / or with respect to the display housing formed from sheet metal components.
    As further best seen from a synopsis of Fig. 2, 3, the receiving recess 11 for receiving the display 6 can be formed approximately trough- or lattice-like aus¬. In particular, the receiving recess 11 has a plurality of openings 20 in the base plate 21 delimiting the receiving recess 11. Alternatively or in combination with this, openings 20 -shown in dashed lines in FIG. 3 -can be provided in the side walls 22 delimiting the receiving recess 11. These breakthroughs 20 are provided at least for partial backfilling or embedding of the display 6 with the leveling compound 14, as best seen in a synopsis of Fig. 4, 5. In particular, the display 6 by filling or introducing originally pastöserbzw. viscous balancing mass 14 via the back 16 and / or via the side surfaces 18 of the display 6 within the receiving recess 11 aligned exactly and held at the planned target position. The planned target position is achieved when the basically planar display surface 10 of the display 6 is located in the reference plane 19 or aligned in a defined manner parallel to the reference plane 19.
    Preferably, the leveling compound 14 in the hardened or solidified state with respect to its mechanical properties is elastically or elastically restoring konzi¬piert. This means that, in addition to a positioning or holding function, the balancing mass 14 can also ideally fulfill a damping or cushioning position if the balancing mass 14 has a lower modulus of elasticity than the plastic of the housing 2 or of the housing part 3 elastically yielding and restoring compensating mass 14 intercepted a possible distortion or a shock-related, elastic deformation of the housing part 3 or are transmitted to the relatively fragile display 6 only to a reduced extent. Thus, the shock or Bruchfestig¬keit, in particular the robustness of the handheld terminal 1 can be further increased.
    In addition to a compensation or positioning function and a damping function, the compensation mass 14 can also advantageously assume an adhesive function or assembly task. In particular, in the preferred application with an additional adhesive-acting leveling compound 14, it is also si¬chergestellt in a simple and reliable manner that the display 6 remains permanently at the proper position, in particular with respect to the reference plane 19 as planned remains aligned, although the receiving recess 11 for the display 6 is at least slightly larger in terms of their clear widths, as the corresponding outer dimensions of the display 6. In particular, by the inserted between the display 6 and the receiving recess 11 te, tolerance-compensating and at the same time adhesive and / or damping compensating mass 14 improved installation or an improved mechanical coupling between the display 6 and the housing part 3 can be achieved.
    According to the illustrated embodiment, it may be expedient if the display 6 is held in position within the receiving recess 11 over a plurality of mutually distanced support zones 23, 24 - FIG. 2 and FIG. 5 - from the compensation mass 14. Above all, if the leveling compound 14 is formed by an elastomeric plastic, in particular by a polymer-based adhesive, which adhesive has elastic properties in the curing state, the cushioning effect between the display 6 and the housing 2 may favor the robustness of the hand-held device ¬ 1 be increased. In the illustrated embodiment according to FIG. 2, five areal distributed support zones 23, 24 for the display 6 with respect to the receiving recess 11bzw. the housing part 3 is provided. Of course, a two- or three-point storage or a differently selected number of support zones 23, 24 from Ausgleichsmas¬se 14 conceivable. It is only essential that an optimized compromise between elastic Nachgiebigkeit and sufficient anchoring force of the display 6 is ensured within the receiving recess 11.
    Expediently, it is further, as best seen from a synopsis of Fig. 1.4, when the membrane keyboard 8, the display area 10 of the display 6 completely covered. Accordingly, the lateral boundary edges 25, 26 of the membrane keypad 8, which are approximately rectangular in plan view and square in plan view, project beyond the respectively assigned or respectively. nearest, lateral boundary edges 27, 28 of the display 6, in particular the vertical side surfaces 18 of the display 6, as best seen in FIG. 4 can be seen. Accordingly, in the case of the membrane keypad 8, a projection 29, 30 is provided, through which the foil keyboard 8 protrudes beyond the outer boundary edges 27, 28 of the display surface 10 of the display 6. This projection 29, 30 is preferably provided with respect to all peripheral boundary edges 27, 28 of the display surface 10 of the display 6. With this projection 29, 30 of the membrane keyboard 8 relative to the display 6, a possible free space or gap 31, 32 between at least one side surface 18 of the display 6 and the nearest boundary surface 17 or side wall 22 of the receiving recess 11 is bridged and covered. In particular, construction-related gaps 31, 32 or in the gaps 31, 32 optionally embedded adhesive or leveling compounds 14 are coated by the membrane keyboard 8 and thus rendered invisible or concealed for the operator, as best shown in FIG. 5 can be seen.
    The target or reference plane 19 for the display surface 10 of the display 6 may be defined by the housing front surface 5 nearest boundary edges 11a of the receiving recess 11für the display 6. Accordingly, the display surface 10 of the display 6 flush. The tolerance-compensating effect of the leveling compound 14 on the rear side 16 and / or on the side surfaces 18 of the display 6 ensures almost over the entire Umfangs¬ range of the display surface 10 a stepless, vault-free or plan transition between the display surface 10 and the housing front side 5. Alternatively, it is - as shown in FIGS. 1 to5 - also possible, the reference plane 19 for the display surface 10 of the display 6 by a plangemäßen installation state of the membrane keyboard. 8 to define itself forming, eben¬flächig extending back 33 of the membrane keyboard 8. Accordingly, the rear side 33 of the membrane keyboard 8 or of the position detection sensor 37 can rest on the display surface 10 fully and substantially without any spacing and also as smoothly as possible. plan in the formed plastic housing front side 5 of the housing 2. Undesirable gaps or air gaps between the display surface 10 of the display 6 and the back 33 of the membrane keyboard 8 can be avoided or hinan held. According to an expedient embodiment, as illustrated in FIGS. 1 to 5, however, the membrane keypad 8 is embedded or inserted in a further receiving recess 34 in the housing front side 5 of the first housing part 3. Preferably, a receiving depth 35 of the further receiving recess 34 corresponds approximately to the thickness 36 of the membrane keyboard 8 in its edge or peripheral section, in particular in the region of the overhang 29, 30 relative to the display surface 10 of the display 6.
    The membrane keypad 8 is formed in accordance with an expedient embodiment by a touch-sensitive, plate-shaped position detection sensor 37 and by a covering film 39 arranged on the des¬sen sensor surface 38. The touch-sensitive, plate-shaped position detection sensor 37 is expediently formed by a so-called matrix touch panel with several adjacent zones for independent, in particular also simultaneous, detection of several actuation processes and at least partially, in particular in its center region, from a transparent or translucent material formed. As a result, it is possible for the corresponding visualizations on the display surface 10 of the display 6 to be perceptible by the operator through the touch-sensitive position detection sensor 37. Expediently, the position detection sensor 37 is formed by a plate-shaped, transparent carrier element, for example made of polycarbonate, and by a resistive or capacitive sensor film adhered thereto (not shown).
    The plate-shaped position detection sensor 37 is coated on its surface facing the operator sensor surface 38 with an at least partially transparent or translucent cover sheet 39. In particular, the sensor surface 38 and the cover film 39 mounted thereon are connected to each other at least in sections or at points via individual adhesive sections 40. The adhesive portions 40 are provided in particular in those sections of the cover sheet 39, in which the cover sheet is made opaque or opaque.
    Preferably, the cover sheet 39 has a plurality of elastically resilient and zurückstel¬lenden elevations or bulges 41. These elevations or protrusions 41 in the cover film 39 define a plurality of input keys 9 on the hand-held operating device 1 on the touch-sensitive, areally executed position detection sensor 37. These outbookings 41 in the cover film 39 accomplish an actuation path 42 tactilely perceivable by the operator Consequently, the cover film 39 with the convexities 41 provides an improvement in the quality of operation after the corresponding membrane keyboard 8 gives tactile actuation feedback, at least for individual input keys 9, although the data acquisition or the acquisition of input commands per se via a touch-sensitive, plate-shaped position detection sensor 37 done without inherent actuation.
    According to an advantageous, optionally independent inventive embodiment, the touch-sensitive, plate-shaped position detection sensor 37 is formed by a capacitive touch panel operating on the capacitive sensor principle. The structural combination or superimposition of a capacitive touch panel with a partially structured cover sheet 39 offers improved protection against unwanted tripping or unintentional input commands. Such a capacitive touch panel is functionally superior to a resistive touch sensor, since the above-described advantageous aspect of avoiding unwanted triggering when using a resistive touch sensor is not or hardly achievable. Capacitive touch panels are also inherently robust in terms of design and construction and are also relatively inexpensive due to their increasing use in consumer products. Therefore, a capacitive matrix touch panel is also becoming increasingly interesting due to these robustness and price reasons for the industrial sector. The " powerless " Actuation of a capacitive touch panel has hitherto made these components unsuitable for industrial applications - however, in connection with the partially structured cover sheet 39, the use of a capacitive matrix-touch panel as a position detection sensor 37 is particularly useful.
    In those sections of the cover sheet 39, in which the input keys are represented 9 and the bulges 41 are formed, the cover sheet 39 is preferably formed trans¬parent or translucent. Thereby, a graphic outputted from the display 6 or a spot of illumination or color can pass through the position detection sensor 37 and the input key 9 or bulge 41, respectively, and thus be perceived by the operator as a display element or information. In particular, quasi-backlit input keys 9 can be formed which provide tactile actuation feedback, although these are technically based on a touch-sensitive, preferably capacitive, and inherently unyielding matrix touch sensor, which contacts or approaches of conductive objects at different positions In this case, the cover film 39 has no adhesive bond with the sensor surface 38 of the position detection sensor 37 in those sections in which the bulges 41 are present, so that an adequate setting and return movement or movement is achieved ., An actuating path 42 for the elastic bulges 41 is ensured.
    The rear surface 33 of the touch-sensitive position detection sensor 37 opposite the sensor surface 38 may be provided with an adhesive layer 44 along its peripheral portions 43. Via this adhesive layer 44, the plate-shaped position detection sensor 37 with the overlapping edge sections 45 on the display surface 10 of the display 6 can be adhesively bonded to the display 6. In particular, in the assembled state-as shown in FIG. 5-the rear side 33 of the membrane keyboard 8 or the position detection sensor 37 and the display surface 10 of the display 6 are glued together at least partially, in particular at least along the peripheral sections 43 and the edge sections 45.
    As best seen in Fig. 5, the outer projection 29, 30 of the cover sheet 39, which protrusion 29, 30 over the lateral boundary edges 27, 28 of the
    Displays 6 and the plate-shaped position detection sensor 37 protrudes, glued to Anbindungs¬ surfaces 46, 47 on the first housing part 3. In this context, a wesentli¬ advantage of the balancing mass 14 in their tolerances at least partially balancingbzw. equalizing effect compared to the display 6. In particular, this is achieved in that the cover sheet 39 of the membrane keyboard 8, starting from the Plangemäßen Anbindungsflä¬ 46, 47 on the first housing part 3 as continuously as possible or without bending in the clear receiving cross section of the receiving recess 11 for the display 6 can pass , As a result, mechanical stresses and strains of the membrane keyboard 8 and the cover film 39 are avoided or kept back. Consequently, it is rather ensured that the respective adhesions extend as completely as possible over the entire surface and that gradual detachment or detachment tendencies are maintained. In particular, this ensures that peripheral Verklebungs¬ surfaces 48, 49 on the lateral projections 29, 30 of the cover sheet 39 against the Anbin¬dungsflächen 46, 47 on the housing 2 are designed as full as possible and no gaps or air gaps are present, which would impair a permanent or liquid-tight Verkle¬bung. In particular, it is ensured by the specified installation method and design - according to FIG. 5 - that the touch-sensitive, plate-like Positi¬onserfassungssensor 37 on the display surface 10 of the display 6 directly or "full", insbeson¬dere load-transmitting, can support, so that a stepless Transition from the cover film 39 arranged on the touch-sensitive sensor surface 38 of the position detection sensor 37 to the connecting surfaces 46, 47 bounding the receiving recess 11 for the cover foil 39 is formed on the first housing part 3. In addition, critical parallax effects in the sandwich construction between the display 6 and the membrane keyboard 8, which would complicate the operation or provoke operating errors, are reduced to a minimum.
    An expedient procedure for the assembly of the subcomponent according to FIG. 5 for a handheld terminal 1 according to FIG. 1 can be defined as follows: In the preferred injection-molded housing part 3 made of plastic with the receiving recess 11 - FIG loosely inserted from the housing front 5 and aligned along a side edge of the receiving recess 11. Subsequently, the membrane keyboard 8, comprising the matrix-based, planar position detection sensor 37 and the cover film 39 is placed on the display surface 10 of the display 6. An adhesive bonding between the position detection sensor 37 and the display 6 via the adhesive layers 44 takes place at least partially. In addition, an adhesive bond is thus formed between the cover film 39 and the housing part 3 via the bonding surfaces 48, 49. Subsequently, the housing 2 of the display 6 is backfilled with the pasty or flowable, gradual-hardening leveling compound 14 in the processing state. For this purpose, preferably the openings 20 in the receiving recess 11 are used. It may be expedient here if the semifinished product from the housing part 3, membrane keyboard 8 and display 6 is turned or fallen over in the course of this, that is, with the housing front side 5 placed on a flat surface. This ensures, in a simple manner, that the cover film 39, in spite of the sandwich construction, is aligned as level as possible or level with respect to elements subject to tolerances. The introduction of the pasty in the processing state leveling compound 14 can support this alignment. In the course of the gradual hardening or solidification of the balance mass 14, this particularly exact, plan-oriented alignment is then virtually frozen or fixed, so that a high-quality semi-finished product for the hand-held operating device 1 is present.
    The embodiment shows a possible embodiment of the Handbedienger¬¬tes 1, it being noted at this point that the invention is not limited to the embodiment shown specifically, but also various modifications are possible and these modifications due to the teaching of the technical action by ¬ständliche invention in the skill of the art working in this technical field lie¬gen.
    The problem underlying the independent inventive solutions can be taken from the description.
    Furthermore, individual features or combinations of features from the illustrated and described different embodiments may represent for themselves, inventive or inventive solutions.
    For the sake of order, it should finally be pointed out that for better understanding of the design of the handheld terminal 1, this or its components has been shown partially non-scale and / or enlarged and / or reduced in size.
    REFERENCE IDENTIFICATION 1 Handheld terminal 41 Bulge 2 Housing 42 Actuation path 3 Housing part 43 Peripheral section 4 Housing part 44 Adhesive layer 5 Housing front 45 Edge section 6 Display 46 Interface 7 Display 47 Connection surface 8 Membrane keypad 48 Bonding surface 9 Input button 49 Bonding surface 10 Display surface 11 Acquisition recess 11a Limiting edge 12 Acquisition depth 13 Height 14 Leveling compound 15 Boundary surface 16 Reverse side 17 Boundary surface 18 Side surface 19 Reference plane 20 Breakthrough 21 Bottom plate 22 Sidewall 23 Support zone 24 Support zone 25 Limiter edge 26 Limiter edge 27 Limiter edge 28 Limiter edge 29 Overhang 30 Overhang 31 Slit 32 Slit 33 Back 34 Receiving recess 35 Acquisition depth 36 Thickness 37 Position detection sensor 38 Sensor surface 39 Cover film 40 adhesive portion
    权利要求:
    Claims (14)
    [1]
    Claims 1. Mobile handheld terminal (1) for an industrial control, comprising a two- or multi-part housing (2) of a first housing part (3), which at least Teilab¬ sections of the housing front side (5) defined, and at least one further Gehäuse¬teil (4), wherein the housing parts (3, 4) in the assembled state form a cavity for receiving a plurality of electrotechnical or electronic components, and at least one display (6, 7) for the software-controlled visualization of characters, graphics or colors, characterized in that at least one display (6) is at least partially superimposed by a membrane keyboard (8), which membrane keypad (8) is bonded in its edge or peripheral portions with the first housing part (3) and a plurality of transparent or translucent input keys (9), so that at least portions of visualizations on the underlying display (6) are influenced by a Bedi Enperson are perceptible, and that in the first housing part (3) ei¬ne opposite the housing front side (5) recessed receiving recess (11) for receiving at least the display (6) is formed, wherein a receiving depth (12) of the receiving recess ( 11) is dimensioned slightly larger than a height (13) of the display (6), and that between bottom boundary surfaces (15) of the receiving recess (11) and the back (16) of the display (6), or between wall boundary surfaces (17) the receiving recess (11) and side surfaces (18) of the display (6) is incorporated a viscous, solidifying balancing mass (14) through which balancing mass (14) the display surface (10) of the display (6) with respect to a reference plane (19) of the first housing part (3) is aligned and held.
    [2]
    2. Handheld terminal according to claim 1, characterized in that the membrane keyboard (8) the display surface (10) of the display (6) completely covered and lateral Begrenzungs¬ edges (27, 28) of the display (6) surmounted, so that this supernatant (29 , 30) of the film keyboard (8) bridges a gap (31, 32) between at least one side surface (18) of the display (6) and the nearest boundary surface (17) or side wall (22) of the receiving recess (11) and covered.
    [3]
    3. Handheld terminal according to claim 1 or 2, characterized in that the Folientas¬tatur (8) at least partially in a further receiving recess (34) in the Gehäu¬sefrontseite (5) of the first housing part (3) is inserted, wherein a receiving depth ( 35) of the further receiving recess (34) corresponds approximately to the thickness (36) of the membrane keyboard (8) in its peripheral portion.
    [4]
    4. Handheld terminal according to one of the preceding claims, characterized in that the reference plane (19) for the display surface (10) of the display (6) by the housing front side (5) nearest boundary edges (11 a) of the receiving recess (11) for the Display (6), or by a planar extending rear side (33) of the Folien¬tastatur (8) is defined.
    [5]
    5. Handheld terminal according to one of the preceding claims, characterized in that the receiving recess (11) for receiving the display (6) trough or lattice-like manner and a plurality of openings (20) in the bottom plate (21) and / orin the side walls ( 22), which openings (20) are provided for at least partially backfilling the display (6) with the balancing mass (14).
    [6]
    6. Handheld terminal according to one of the preceding claims, characterized in that the display (6) via a plurality of mutually distanced support zones (23, 24) Ausausgleichsmasse (14) is positioned in the receiving recess (11).
    [7]
    7. Handheld terminal according to one of the preceding claims, characterized in that the leveling compound (14) is formed by an elastomeric plastic, in particular by an adhesive based on a polymer having elastic properties in the curing state.
    [8]
    8. Handheld terminal according to one of the preceding claims, characterized in that the membrane keyboard (8) comprises a touch-sensitive, plate-shaped Positionserfas¬sungssensor (37) from an at least partially transparent or Durchschei¬nenden material, and the position detection sensor (37) at its one operating ¬person facing sensor surface (38) with an at least partially transparent or translucent cover sheet (39) is coated.
    [9]
    9. A hand-held operating device according to claim 8, characterized in that the cover film (39) has a plurality of elastically yielding and restoring protrusions (41) or elevations, and that these bulges (41) or elevations in the cover (39) a plurality of Define input buttons (9) with a tactile sensible by the operator actuation path (42).
    [10]
    10. Handheld terminal according to claim 8 or 9, characterized in that the berüh¬rungssensitive, plate-shaped position detection sensor (37) is formed by a kapazi¬tive sensor principle working, capacitive touch panel.
    [11]
    11. Handheld terminal according to one of claims 8 to 10, characterized in that the touch-sensitive, plate-shaped position detection sensor (37) along Randab¬ sections (45) of the display surface (10) of the display (6) with the display (6) is glued.
    [12]
    12. Handheld terminal according to one of claims 8 to 11, characterized in that an outer projection (29, 30) of the cover film (39), which projects beyond the lateral Begrenzungs¬ edges of the plate-shaped position detection sensor (37), with Anbindungsflä¬ Chen (46, 47) is glued to the first housing part (3).
    [13]
    13. Handheld terminal according to claim 12, characterized in that the cover film (39), starting from the connection surfaces (46, 47) on the first housing part (3) by the tole¬ranzausgleichende effect of the display (6) supporting balancing mass (14) stu ¬fenlos in the clear receiving cross section of the receiving recess (11) for the display (6) passes.
    [14]
    14. Handheld control unit according to one or more of the preceding claims, characterized in that the touch-sensitive, plate-like position detection sensor (37) on the display surface (10) of the display (6) load-transmitting and beabstandslosabstützt, and a continuous transition from the on the touch-sensitive sensor surface (38) of the position detection sensor (37) arranged cover film (39) to the receiving recess (11) delimiting connection surfaces (46, 47) for the cover film (39) is formed first housing part (3). For this 2 sheets of drawings
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    同族专利:
    公开号 | 公开日
    DE202012102329U1|2012-08-08|
    引用文献:
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    法律状态:
    2020-04-15| MM01| Lapse because of not paying annual fees|Effective date: 20190831 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE201220102329|DE202012102329U1|2012-06-25|2012-06-25|Mobile handheld terminal for industrial control|
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