DE8805204U1 - Digitally operating switching or control device - Google Patents

Description

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DI PLOMPHYSIKER DR. RER. HJrf. R(CHATOgJERU' ^! ,, ^! Patent Attorney OFFICE ADDRESS · KAUPTSTRASSE 32 - 7218 TROSSINGEN 1 authorized as REPRESENTATIVE

at the European Patent Office D-SOOO Munich

File number:

GbraNote "Single module/two module width"
Note: WEG-Legrand GmbH., 477o Soest

25 0256 a/1 / DrBi/bp / 14.o4.88 Description - Page 7

W.E.G.-LEGRAND GmbH. Vv'indmühlenweg 2 7

477o SOEST

Digitally operating switching or control device, especially timer

The invention relates to a digitally operating switching or control device, in particular a timer with a digital display device, control panel with buttons in matrix circuit for different coding, electronic components on circuit boards and an electrotic switching device or in connection with at least one electromechanical switching device, preferably containing relays, in a housing with a mounting device for optional clamping on a mounting rail or for surface mounting.

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Gbp.TJim. 'Single module/double module width" Description - Page 8

Ann.: KEG-Legrand QnbH., 477o Soest :

f Timers have long been used in various

Lauarten and in many areas of control and regulation technology, especially heating technology, in the

f ^T< sentence. This tendency has been increasing since the Exi

The use of electronic timers is particularly important because they offer considerable advantages in terms of versatility and variability of program input and the number of channels (outputs). Their practical use is expected to lead to a further increase in the range of applications if the space required by the control devices in question is further reduced as a result of ongoing miniaturization, to which the technology of new materials and their manufacturing techniques, on the one hand, and the advances in electronics in conjunction with digital technology, on the other hand, contribute.

The present invention is based on the electronic timer according to DE-OS 32 14 372.9-31, in which - as with related designs in the relevant ^industries - the space requirement for extreme demands

The complexity and perhaps occasionally the multitude of programming options that are possible and, in the case of incorrect operation, are difficult to correct, can be a problem for extreme demands in terms of simplicity. It is also often desirable that the effort should be able to be adapted to more or a somewhat greater variety of possible variations of the time switch from the outset - either during design or during production.

The invention is therefore based on the task of making the design as easy as possible within the framework of standardized housings and preselected designs in various designs on request.

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25 o256 a/1 /DfBi/bp / 15.o4.l Description - Page 9

to reduce the size* but to leave the usable area for display, operation and connections and to dimension the mechanical rigidity so large that the requirements of the built-in units, such as LCD unit, keyboard or similar, for compliance with tolerance limits in the sense of

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4. To avoid functional defects on the one hand and, on the other hand, to ensure compliance with the necessary accuracy of the installation dimensions * with a minimum of manufacturing effort *. The requirements for the mechanical rigidity of the housing and thus its consistency of dimensions also include making it easier to use, whether it be during input errors as a result of manual limits or functional defects or limits.

This task is solved in the digitally operating switching and control device according to the generic term of claim 1 in conjunction with the features listed therein in detail by the features of the characterizing part. The above-mentioned task is solved in the digitally operating switching and control device according to the generic term of claim 2 in a different way in conjunction with the features of the characterizing part therein.

Special features of the invention are the subject of the subclaims. Exemplary embodiments are explained in the following description with reference to the drawings; they show:

Fig.1: a) a single-module timer with the cover open

b) do. with closed lid

c) a two-module timer with the cover open

and a variant of the keys as well as the key positions or the different heights

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GbmAnm. "Single-/Two-way beam width"' Description - Page

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Fig.2i a) a cover for the single-module size

a^) in front view

a ₂ ) in section AA at window height

a ₃ ) at section BB

aj in section C-C in snap opening height

b) a cover for two-module size

b ₁ ) in front view

b ₂ ) in section AA at window height

b,) in section C-C at snap opening height

Fig.3: an overview of the main

Modules in the overall structure of a single-module timer (especially with regard to clarity and comprehensibility, although perhaps not entirely in line with drawing standards)

a) with the hood-shaped base body with a first, smaller, accessible from the front (top) - a.. - and a second, larger, shaft-like room divider - a, - open from the back (bottom) - with terminal blocks - a. - molded onto the sides for the connection terminals, of which only one is fitted in drawing 3

b) with the upper part with keypad and LCS unit

b,) in section and

b ₂ ) in the top view sr.it view of the LCD display division and keyboard, openings b£v. separating stamp

b,) the corresponding circuit board

c) with the foot part as a base plate for the base body of the hood and for the fastening snap parts of the assembly and components

C^) in bottom view C ₂ ) in front view

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GbmNote. "Single module^/two-module width'* ¹ ' Description - Page

Arorui WEG^Legrand GnbH,, 477o Soest !

Fig.4: the LCD display panel for single-module size

ä) in front view

b) in front view

c) in side view

Fig.5: the LCD display panel for two-module size

a) in front view

b) in front view

c) in side view

Fig.6: above:

a) the keypad for single-module size in front view and floor plan

b) the keypad for two-module size in bottom view and front view for partial assembly (i.e. partially cut-off key stamps

below: the keypad for two-module size

c) for other partial assembly

d) for yet another part in plan view and

e) or f) in side view

d) for yet another partial assembly in plan view and

fig.7

$nd ¹ S: in comparison: the cover in the top view a), in the front view b), in the side view c) and the circuit board d) for the LCD unit on the one hand and the spring plate in the front view e), in the plan view £), in the side view g) for the single-module size (7) and for the two-module size (8)

Fig.9A: the button LCD holder unit for the single module size

a) in section at front view, partially correctly or phantom-like equipped

b) top view with separating blocks (but without contact mat and LCD unit

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GbmAnm, ^EinmodüWZweijnoäul-Bäule' ¹ Description - Page 12

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e) in the sub-view

d) in side view of the stop wall and

e) in the side view on separating blocks between the key stamps

an excerpt from the presentation of the

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Scale (the drawing is not entirely made according to the drawing standards, but partly in the form of a phantom drawing, so that the otherwise hidden parts, which would have to be shown in a separate drawing, are visible) for reasons of space, the hood-shaped basic body is shown in broken form

a) with detailed reproduction of the holder unit with cover and the bracing elements in side view

b) in a partially sectioned view and partially equipped with the holder unit, the cover and the bracing elements in side view

the button LCD holder unit for the two-module size

a) in section at front view

b) top view (without contact mat and LCD unit

cj in the subview and

d) in the side view on separating blocks between the key stamps

Fig.11: the hood-shaped base body of the timer housing in a detailed representation of the two-module size (for drawing reasons incomplete without the left part of the base body and without the side view of the stop wall

a) in section A-B

b) in plan view

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File number:

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-. W.E.G.-Legrand GmbH., 477o Soest

25 o256 a/1 / DrBi/bp / 15.o4.88 Description - Page 13

c) in the bottom view

d) in side view in section E-F

e) in the side external view and uncut partially on the bearing of the cover

Fig.12: a detailed representation of the hood-shaped base body for the two-module size

a) in section A-B

b) in plan view

c) in bottom view

d) in side view in partial

Cut E-F

e) in section and partial external view

Fig.13: the module foot part in the front view of the longitudinal section a), in the bottom view b), in the front view turned upside down and uncut c) and in the side view uncut d) in single-module size

Fig.14: the module foot part in the front view of the longitudinal section a), in the bottom view b), in the front view upside down and uncut c) and in the side view uncut d) in two-module size

In Fig.1a, where the single-module timer 1 is shown in the assembled state of the housing 2 with the lid open with a clear view of the display field 4 for the LCD unit, which is used as the front panel 4a, with the time 5 in hours and minutes (h, m) _t with a flashing colon in between for the seconds, weekday marker 7, symbol "1" 8 for the switch-on times, symbol "O" 9 for the

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GbmAnm. ^II Single-module/two-module width ¹¹¹ Description - Page 14 Note: WEG-Legrand GmbH., 477o Soest

Switch-off times, days of the week 1o in digits together for switch-on and switch-off times or dates.

According to the LCD displays 19 in the display panel 4 of the front panel 4a, the control panel 18 has:

Button 12: Pre-select the input of the current time and the switching times

Button 13: Input of switching times and current

Time, each with day of the week j|

Key 15: Function key for "clear"

Key 16: Function key for "acknowledgement", i.e. completion of the input

Key 17: Correction key "+1" for change "+_1 hour or similar" for switching from summer to winter time and vice versa or "+ any difference" as required after another correction of a selected entry.

The function keys 15 and 16 are recessed and can only be activated by means of a pin protruding through the cutout of the cover 131 (Fig.7), i.e. not accidentally, for example at the same time as one of the adjacent or

buttons arranged above. &igr;

The function key "I/O" 14 is intended for switching from the ON to the OFF switching state and vice versa, regardless of the switching program (e.g. in the output). *

The reference numbers in Fig. 1c correspond to those in Fig. 1a and b and are in some cases specially marked with apostrophes to highlight certain minor changes. Otherwise, further details can be found in connection with Fig. 5, 6 and 8.

This cover 3 is shown in detail in Fig.2a for the single-module size and in Fig.2b for the two-module size, namely in a^ or bj in front view, in a, or b, in section AA, in a* in section BB for both sizes and a. _A or b«

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GbmAnm. "Single module/two module width" Description - Page 15 Aam.: W.E.G.-Legrand GmbH., 477&ogr; Soest

in section C-C again separately for both sizes. This comparison already indicates that the subject matter of the invention makes use of the modularity principle as far as possible.

The housing 2 corresponds in its partial forms to the relevant standards and has on the side parts 29 of smaller height, for example, chambers 28 for connecting screws, as well as the snap groove for mounting on a supporting rail (not shown). The embodiment with the lid 3 closed is shown in Fig. 1b.

Fig. 3 is intended to serve as a detailed example of the modular structure of the time switch according to the invention used for both sizes, with the help of which the idea of a still incomplete structure made up of the modules, namely the hood-shaped base body Fig. 3a with the small shaft 31, the large shaft 32, both of which serve as room dividers, as well as the terminal blocks 33 for the connection terminals of the holder unit 35 shown in side sectional view in Fig. 5b ₁ , the stop formations 36, 37 for the side wall stops 38, 39 (Fig. 5B).

Fig.3b ₂ gives an overview of the display panel 4 of the front panel 4a of the equipped holder unit 41 , which is fully equipped for a single module size, with the sections for the control panel 18 of the keys and the LCD unit, details of which have already been described in connection with Fig.1a. At the bottom (or at the back) the hood-shaped base body

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h GbmNote "Single module-two module width" Description - Page 16

Note: W.E.G.-Legrand GmbH., 477o Soest

(Fig.3a) is closed by the circuit board 43 with lateral lugs 44, which are adjusted by the receiving openings 4. The foot part of Fig.3c ₂ is placed on this as a closing module with base plate 45. This is - in a manner known per se - equipped with a snap device 46 according to DE-OS 26 oo 4o9.1, which can be used either for mounting by clamping onto a support rail or for surface mounting.

A terminal block 33 is arranged at the side (or above and below) the middle part of the base body with the small 31 and the large shaft 32 (see Fig. 3), in which the connection terminals 27 are housed in a separate terminal container 23, the soldering lugs 24 of which protrude downwards and are connected to the appropriately arranged soldering holes 25 of the circuit board 43 and which are fixed and adjusted via the holes in the shoulders 26 of the terminal blocks 33 by connection terminals with the associated terminal screw. In this embodiment, the circuit board 43 is centered by its lateral projections 44 in openings 47 of the lower part 48 of the side walls of the base body.

In partial areas 61, the side walls are reinforced compared to their other partial sections 62 in the area of the shafts 31 and 32 and in overlapping areas of the base part in longitudinal side walls 63 - in the direction of the cavity of the base body and within the side walls of the base body, so that in the overlapping areas a multiple wall thickness with a higher insulation value is achieved.

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GbmNote. "Single module-ZTwo module^construction width" Description - Page 17 Note: WEG-iüägrand GmbH., 477o Soest , >

Fig.4a shows the LCD unit for a single-module timer with the front panel 4a, on which the displays are arranged one above the other in several lines, starting from the top the time 5 in hours and minutes and in between the flashing colon 6 for the seconds, then the seven bar-shaped markers 7 for the days of the week, all for the ON mode, i.e. for the switch-on dates, then the days of the week 1o themselves in Arabic numerals, finally in reverse order for the OFF mode, i.e. the switch-off dates, the bar-shaped markers 7' for the days of the week, the time 5* in hours and minutes with the flashing colon in between. Above this data information are circular clock symbols 56 for displaying the operating status "current time" and as further function displays 11 a circular ring 57 with a gap and a circular disk 58, if necessary within the circular ring 57 for further data or function information.

The contacts 72 of the connections of the electronic circuit of the actual LCD unit 4 are indicated by dashed lines on the contact surfaces on the side edges 71, and the bead 73 is formed on one end wall, which serves to center this side wall on the adjacent key mat. In the front view Fig. 4b, the rear polarizer is designated by 74, the front polarizer by 75 and in the side view the bead is designated by 73 for centering relative to the key mat.

In Fig.5 the LCD unit is for a two-module timer, namely in Fig.5a the display field 4 with corresponding division with two lines 81 for ON and OFF

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GbmAnnh "Single module y two module width" Description - Page 18 Note: WiEiG^-Legrand GmbH., 477o Soest

OFF switching times, each shown in hours and minutes with a flashing colon 82 between them and weekday markers 83 and 83' arranged between these lines and weekday data arranged in between. The following symbols are arranged to the side of this in this size: symbol 84 for entering the current switching time, the symbols with a circular ring and circular disk 84ä - together if necessary - to display the initial state in the same way as in the case of the single-module size, but in conjunction with the channel display 85 for channel I and 86 for channel II and the associated symbols circular ring with central circular disk 87 in the first case and 88 in the second case for additional data or function symbols.

The front view shows, in the same way as with the single-module timer, the contact surfaces 91 with contacts 92 on the side edges of the connections of the electronic circuit of the actual LCD display 89 (two-module), and the bead 93 is formed on one end wall, which serves to center this side wall on the adjacent keypad. In the front view Fig. 5b, the rear polarizer is marked with 94, the front polarizer with 95 and in the side view the bead with ®3 ? for centering relative to the keypad.

In Fig.6, the keypad is shown for different sizes - single-module or two-module - or with all keys occupied or only a part of them. In Fig.6a, the simple keypad is shown, where the keys are arranged in columns and rows, e.g. Ø with normal length and Ø with shortened length on the keypad Io3 with a corner set 1o4 and on it

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GbmAnm. "Single-module/two-module width" description - page 19 Annu: W.E,G.-Legrand GmbH.* 477o Soest

molded-on webs 1o5 and 1oS', which have a distance 1o6 between them, in which the bead 73 of Fig.4 is accommodated. Fig.6b shows the two-module design of the key mat, in which two columns 111, 112 are close together and after a gap 113 a third column 114 keys are visible from below, i.e. the openings through the key mat 115. Here again, two of the three keys, 116, 11?, are visible with normal length and the key 118 in between is shortened. The angle extension 119 with the molded-on webs 12o can be designed in the same way as in the case of Fig.6a.

In Fig. 6c to 6f examples of different shortenings of individual keys in the keypad for the two-module size are shown, whereby the effect of the shortening can be seen in particular in the side view in Fig. 6e and 6f. The partial sections through the plungers and the keypad should be sufficient to understand the different designs.

In Fig.7, in the partial drawing 7 a) the cover 131 for the single-module size is shown with a large rectangular opening 132 for the LCD display and three parallel narrow openings 133 for the key stamps, on the side edges 134 of which two projections

Snap lugs 135 are formed on the two side walls 136 (Fig.3) of the small shaft 31 of the base body, which serve for the self-holding adjustment of the holder unit 35 on the two side walls 136 (Fig.3). The front view of the cover 131 in Fig.7b and Fig.7c shows a section in which the centering pin 137 can be seen, which together with the non-running collar ISS ensures the centering of the baking disk of the holder unit.

Reference number: 25 &ogr;256 ä/1 / DrBi/bp / 14,&oacgr;4,88

GbmÄnm» "Single-module/two-module ⁱ -building width" Description - Page 2o Note.i W ₄ E<G,*-Legran,d GmbH., 4?7o Soest ,

t| ₍ 35 (Fig.3). The circuit board Fig.7d contains

two contact surfaces 139 on the side edges 14ö,

I* which are opposite to those of the LCD unit. The six

f Contact surfaces 141 serve as supports for the Ta

The circuit board 142 also has lugs 43 on the side edges 14o, which engage in the same places as in the case of the cover 131, but in the side walls of the holder 35 (in Fig.3) in a clamping and adjusting manner.

The previously described group of LCD unit (Fig.5) and ^touch pad (Fig.6) would not be sufficiently accurate, adjusted and stabilized if it were not supported by a

Spring plate serving as tensioning element (Fig.7e to g) over

, area-distributed pressure and weak points for local

,! rather adjustment of stiffness and flexibility self-

. ~ would be pre-tensioned in an adjusting manner (see front view Fig.7e, j top view Fig.7f and side view Fig.7g). This

^: ; spring plate also serving as shielding plate 151

*with side walls 152, which stiffen it in the transverse direction, have angle strips 153 bent near these side walls 152 in the direction of the printed circuit board 142 above and exert a tensioning force on these, because the spring plate ^7r exerts a pressure on the printed circuit board through the wide lateral noses 154, which are inserted under prestress into slots in the side wall 15 of the holder 35 (in Fig.3). A further slot in the spring plate 151 limits its tensioning force, because its rigidity is thereby reduced in a predetermined manner.

Fig.8 shows the previously described parts, the cover

. kung 161 in plan view in Fig.8a and in front view

j ib and in the side section 8c, the circuit board 162 in

I- Fig.8d and the spring plate 163 in Fig.8e in front view,

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GbmNote. "Single-module/two-module width" Description - Page 21 Note: W.E.G.-Legrand GmbH., 477o Soest

in Fig.8f in plan view and in Fig.8g in partially sectioned side view for the two-module size; j thus the cover has a wider window 164, a | larger number of openings 165 for the keys, but otherwise largely the same details, namely the same pressure support pin 166 and the circumferential collar 167 for centering relative to the cover plate of the holder ( Fig.io) and the flat noses 168, 169 and 17o (cover plate, circuit board and spring plate) for the slots in the side walls of the shaft of the two-module timer (Fig.11) or the side walls of the two-module holder (Fig.io) for snap-in installation. The same applies to the circuit board 162 with a larger width but, depending on requirements, a larger number of contacts 171 and a larger number of contact fields 172 for the keys, the spring plate 163 with basically the same shape but a larger width. These parts are also self-adjusting and self-holding by snapping noses into the side walls of the holder j used for assembly, so that the gap between the cover 161 i and spring plate 163 are integrally combined.

In Fig.9, the holder unit 35 (Fig.9a) is shown in section in a single-module size, with the cover plate 2o1 with a circumferential step and recess 2oo for centering the cover (131) (Fig.7) on the cover plate _% 2o1. The end walls 2o2 and 2o3, as well as the long side walls 2o4 and 2o5 have cutouts 2o4a, 2o5a for lugs 143 (Fig. 7) on the long edge of the circuit board 142. On the underside in the area of the invisible key mat, crossbars 2o8, 2o8a and 2o8b are formed downwards as well as centering pins, the latter of which are so much longer than the crossbars 2o8 _s that it can be placed on the

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GbmNote. "Single module/two module width" Description - Page 22 Note: W.E.G.-Legrand GmbH., 477o Soest

the dashed printed circuit board 142 (Fig.7) with its molded tips 2o8d (see also Fig.9c) rests in corresponding recesses 21o of the printed circuit board 142 (see Fig.7d). At right angles to the mentioned crossbars (e.g. 2ö8) (as Fig.9c shows) between the recesses (214, 215) for the keys, longitudinal bars 211, 212 etc. are molded onto the crossbars (e.g. 2o8) and the mentioned pin-shaped attachments are visible at the intersection point 213. First of all, it is easy to see from the elevation (Fig. 9a) and the bottom view (Fig. 9c) that the webs form chambers 214, 215 below the key mat, that they have a solid connection between them, i.e. are stiffened, but are not in a form-fitting connection to the longitudinal side walls, and consequently tensions, deformations under pressure or the like have no influence on the fit of the keys or the key mat.

Both the transverse and the longitudinal webs are stiffened by molded-on wedge projections 216a. This is important because the tension resulting from the pressure of the tips 2o8d on the contact points 21o of the circuit board 142 and the fixing of the same by means of lugs (Fig. 7d) in cutouts 2o7 in the holder side wall results in excellent fixing of all dimensions, but also in a large internal tension which could cause disturbing deviations and dimensional distortions without the physical separation.

In the embodiment of Fig.9A/a), between the recesses 215 and the adjacent 215a, as well as the recesses 215b and 215c, there are separating blocks 218, 218a of square cross-section, as well as a similar

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Reference number: 25 o256 a/1 / DrBi/bp / 14.o4.88

GbmNote. "Single module - double module width" Description - Page 23 Note: W.E.G.-Legrand GmbH., 477o Soest'

219 between the recesses 215a and 215b, but of smaller height, possibly because the keys are recessed at this point and a normal height would impede the accessibility of these keys to an unacceptable extent. A distance between the keys and the separating blocks on both sides is particularly useful in the order of magnitude for a running seat fit with play. This arrangement of separating blocks and the recessing of the keys arranged between them advantageously prevent two adjacent keys from being or being able to be inadvertently operated at the same time.

The side section of Fig.9A/d) shows supports for the connectors 22o between the LCD unit 2o indicated by dashed lines and the circuit board 142, and that the circuit board 142 passes through an opening in the side wall 2o5 to adjust and hold it. In Fig.9B, the actual LCD unit is shown together with the keypad on a larger scale. The location of the suction groups is shown separately in Fig.9B/a) and Fig.9B/b) in order to explain the height adjustment by the side walls of the holder unit 35 being supported on the protruding wall reinforcement part (A_) . The cover 131 is indicated by dashed lines on the holder unit, in section CC of the side view one of the terminal containers 23 is equipped with a connection terminal 27 and a screw.

In Fig.9B , the local arrangement of the components, especially the holder unit (27), consisting of the keyboard with keypad 1o3 and LCD unit 2o within the cover plate 2o1 and the end walls 2o2, 2o3 is summarized in the form of a frame 231. The cover 131 is located on the cover plate and under the frame 231 (Fig.9A/e)

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GbmNote. "Single module/two module width". Description - page 24 Note: W. E. G.-Legrand GmbH., 477&ogr; Soest.

&igr; is the circuit board 142. Both the cover

as well as the circuit board 142, as well as the spring plate bracing the circuit board from below by means of the angle strips 153 and the projection 154 are held in place by projections in recesses 232 and 233 of the side wall of the base body.

The keypad 1o3 has at its end adjacent to the LCD unit 2o a right-angled curved web 1o5 with a nose 217 that engages under the base plate, which are dimensioned in relation to the total length between the end walls 2o2 and 2o3 such that the group of keypad 115, angled web 1o5, wedge attachment, i.e. nose, and LCD unit 2o is so much longer than the distance between the end walls 2o2 and 2o3 that a press fit, i.e. a press-fit packing (Dubbel, ibid.) is created. The already described bracing and support of projections in recesses are also provided for this. Since the chambers 214, 215, etc. are formed on the cover plate 2o1 without touching the side walls 2o5 of the frame 231, they cannot affect the scale of the LCD unit 2o and the keyboard in the event of deformation caused by the tensioning of some components .

During installation, the entire frame rests on the wall reinforcements in the partial areas 6J[ on the shorter upper edge with the lower edges 2o4a and 2o5a. In the longitudinal direction, the entire assembly is fixed by the side walls 28, 29 of the small chimney. As already described, the separating blocks 218 protrude through the cover 131.

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and center the cover plate 2o1 relative to the collar 2o9.

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Reference number: 25 ö256 a/1 / DrBi/bp / 14.&oacgr;4.88

GbmNote. "RinmodulVZweimodului^Baubreite" Description - Page

Note: W,B,G,-Legrand GmbH,, 477o Soest

Fig.io shows in Fig.ioA the longitudinal section, in Fig.1oB the top view, in Fig.ioC the bottom view and in Fig.ioD a side view of the holder unit for the two-module size. You can see at first glance,

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uara gCgCUUUCI UCI C J.IIIIIIUUU J. XgCJI OBUglUUe Ud rig· V XEUIg" there is a difference in terms of width (cf. in particular Fig. 10D) and the other differences are merely consequences of this double width. Details of the description are therefore superfluous, because all of them can be easily exceeded. Only the fixing of the holder unit in the shaft (cf. Fig. 11) is not carried out by resting it on wall reinforcements of the type described there, but with the help of noses 252 and openings 253 on the one hand and by wall reinforcements outside the spatial area of the shaft 251 on the other hand, i.e. in the area of the terminal blocks 254 and the lower parts 255. It should also be mentioned that a third circuit board 256 is installed as a space divider between the other two, to the end of which the connection ends for the connection terminal 257 arranged at medium height are soldered.

In addition to the section A-B in Fig.11A, Fig.11B shows the top view of the front panel with LCD display 2o and control panel 11 for the keyboard as well as the connection terminals 22; in the bottom view in Fig.11C, no details are shown to avoid repetition; in the side view Fig.11D, two connection terminals 27 are drawn from the side for reasons of easier comprehensibility.

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CbmAnm, ^1l ^inmodul-/Zweiffiödul^Bäübreite ^M Description - Page Note.i WEGi-Legrand GmbH,j 477o Soest

as in Fig. 11 and can be easily transferred, so that a repetition is unnecessary. It may be necessary to split Fig. 12 or trim it on one side for format reasons.

In Fig.13a the base part T\_ used in the automatic timer is shown with the base plate 45 (Fig.3C) and (in Fig.13c) the side walls 63, which are essentially divided longitudinally symmetrically into sections of different shapes, namely of greater height and thickness, each towards the inside, 174, 175, and those of smaller height and thickness 176. The higher sections are bevelled at the upper end 177 so that they can be more easily inserted into the interior of the hood-shaped base body (Fig.3A), since this is largely filled with built-in parts. The outer surface of the side walls is therefore flat, the thickenings extend into the interior, as the bottom view of Fig.13b shows, only lugs 179 protrude outwards. The snap device (cf. Fig.3C) is arranged on the underside in a manner known per se. The partial section of Fig. 13d shows that the base plate 45 merges integrally into the thinner side walls. Further special features of the foot part 221 ^{are described in} DE-OS 26 öo 4o9, Figs. 6 and 7.

The details of the base part 191 of a two-module timer with the base plate 192 and the low side walls 193, 194, which are continued with the same thickness into the high sections 195, 196, are almost identical in shape - with the exception of the proportions of the dimensions. In this embodiment, the well-known snap-in mechanism is again used on the underside.

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File number! .. 25 o256 a/1 / DrBi/bp / 14.o4.88

GbmAnm. "Single module-two module-^widthV Description - Page &Agr;&eegr;&idiagr;&eegr;*&iacgr; W,B,Gi-Legrand GmbH., 477o Soest

device 196 is used. In this case of the illustrated embodiment of the two-module timer, the side wall parts of greater height 195 can be continued in the same thickness as the lower side wall parts, because the interior has a larger volume than in the single-module timer. In addition, the meaning of the drawing parts can be easily transferred from Fig. 13.

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Claims (7)

&bull; · ■ I ■·· ··<« DIFLOMPHYHKEB DR. HlR. NATJ RiCHARb BtetfL, - ^.. &diams; PATENT ATTORNEY OFFICE ADDRESS · HAUPTSTRASSE 32 · 7218 TROSSINGEN 1 as REPRESENTATIVE at the European Patent Office D-eOOO Munich File number ..... . GbmAnm. ^it Single module/two module width ¹ '
Note: WEG-Legrand GmbH., 477o Soest 25 0256 a/1 / DrBi/bp / I4.o4.88 Claims - Page 1 Protection claims Digitally operating switching or control device with digital display device, control panel for buttons with different coding, electronic components on circuit boards and an electronic switching device, in particular a timer, for or at least in connection with an electro-mechanical switching device, in particular containing relays, with a mounting device for optionally clamping onto a support rail or for surface mounting, a) for functions and operating states of the current and voltage variables of the output circuit of the switching device that are to be controlled or switched under preselectable time and/or other environmental conditions that can be controlled and selected via the contact array assigned to one and displayed by an LCD display group including accessories File number: GbmNote. "Single module/two module width" 25 o256 a/1 / DrBi/bp / 14.o4.88 Note: W.E.G.-Legrand GmbH., 477o Soest Claims - Page 2 b) with a power supply group and an externally accessible group of connection devices characterized, that a base body (21) with electronics, power supply and connection group is equipped in the usual way with a foot part with the help of space-saving and material-saving, i.e. thin-walled design of the cuboid modules of the housing and their compact, group-wise concentrated assembly with components and components, namely as Upper part (22), in the flat cuboid-shaped interior of the base body (21) in close operative connection and form-fitting pluggable module with keypad (1o3) made of elastic, partly conductive, partly non-conductive material, with LCD unit (2o), connectors (22o), and an associated circuit board (142), with a cover plate (2o1) for both (keypad and LCD unit), two side walls and at least one stop, i.e. designed as a separate, one-piece holder unit open on one side with its own clamping device, and by assembling these modules as subgroups using noses, webs (e.g. 2o8) and adapted slots (e.g. 2ö7), holes and openings formed on the cover plate (2o1), front (2o2) and side (2o4) walls, the conditions for a clear view of selected parts of the electrical and mechanical construction or switching elements and reliable, &bull; llftltltltlll· «iifttti«« »»lllttlltfi«· iitlitf'ft«··· File number: GbmAnm. "Single-module/two-module width" 25 o256 a/1 / DrBi/bp / 14.o4.88 Note: WEG-Legrand GmbH., 477o Soest Claims - Page 3 error-free and easy operation of the externally accessible parts of the switching device and their reliable function are fulfilled by a) the keypad is packed with a press fit (cf. Dubbel, Taschenbuch für den Maschinenbau 15th edition, 1983, Section F Construction technology standards and drawings, page 339) between the cover plate with longitudinal webs and chambers that are molded onto the bottom of it, and cross webs between the actual LCD unit on the one hand and the circuit board assigned to it on the other b) the LCD unit and circuit board and connectors are mounted without auxiliary components required only for adjustment during assembly and without a permanent guide or holding function by means of additional spring preload over surface-distributed pressure and weak points for the purpose of local adjustment of the rigidity and flexibility by means of a web lying flush at right angles to the keypad on the LCD unit and a spring-supported spring plate that also serves as a shielding plate, preloaded, self-locking and self-adjusting. 2. Switching or control device, in particular timer, according to claim 1, characterized in that the actual LCD unit (2ö) together with the associated circuit board (142) - * Il Il I If * · ti H I till ti »** * «I Il I tt I · # &diams; » * &bull;&Lgr; t I t I Il t · · Il I* rf Mt fl'l * * * * ■ « a File number: GbmNote. "Single module/two module width" 25 o256 a/1 / DrBi/bp / 14.o4.88 Note: W. E.G.-Legrand GmbH., 477o Soest Claims - Page 4 with the interposition of so-called connectors (22o), i.e. conductive rubber elements for contacting their connection contacts (71, 91) on the side edges with the opposite conductor tracks (14o) of the circuit board (142), are combined in a form-fitting and force-fitting manner by means of molded-on webs, connections and/or supports with the cover plate (2o1) and the front (?.o2, 2o3) and side walls (2o4, 2\jj) to form the closed holder unit (35) in the form of a frame, wherein the clamping elements mentioned, e.g. a spring plate (151) with lateral angle tabs (152) and noses (154) as well as stiffening walls or ribs (221) on the end walls a reliable electrical connection of the contacts with the conductor tracks is brought about, so that a disruptive impairment of the function under the pressure and displacement forces that may occur is avoided. 3. Switching or control device, in particular timer, according to one of claims 1 and 2, characterized in that the key mat (115) is joined together to form a subunit between the cover plate (2o1) with webs (2cS) formed on its underside and adapted openings (215) for the keys or their respective stamp(s) and the circuit board (142) in a form-fitting and force-fitting manner by a clamping element, e.g. a spring plate (151) with angle tabs (153) and noses (154) and stiffening walls (152), whereby a side wall (2o3) or longitudinal walls and webs (2o8) form chambers (215) among themselves. * If I» ItIl · ■ . ' · &bull; 4 * I ti I ' I «If I I M It I · · I 114« t i File number: GbmNote. "Single module/two module width" 25 o256 a/1 / DrBi/bp / 14.o4.88 Note: W.E.G.-Legrand GmbH., 477o Soest Claims - Page 5 4. Switching or control device, in particular timer, according to one of claims 1 to 3, characterized in that the holder unit (35) holds the LCD unit (20) and the contact matrix with the interposition of an angle web (105) formed on the key mat (115) by means of a press fit between the walls standing at right angles on the connecting line of the two sides, and the circuit board, the connectors, the LCD display unit and the key mat are pressed against one another in the holder unit in the longitudinal and thickness directions by the resilient support of the shielding plate (163) on the side of the circuit board opposite the key mat (115) on a slot (207) in the longitudinal wall (204, 205). 5. Switching or control device according to one of claims 1 to 4, characterized in that the base plate of the keypad (115) has a web-shaped angle projection (1o4) on the edge adjacent to the LCD unit (2o) in terms of width, with a nose engaging under the base plate, preferably in the form of two separate projections (1o5) made of the same elastic material, in particular in a material-locking manner, which are opposite in height to the upper edge of the side edge of the LCD unit (2o) and accommodate a central bead of molding on the contacted side edge between them. 6. Switching or control device according to one of claims 1 to 5, &bull; a ·· ii in ti &bull; · < « t 4»4 Il ■ · · « · · iii File number: GbmAnm. "Single-module/two-module building width ^H 25 o256 a/1 / DrBi/bp / 14"o4.88 &Agr;&eegr;&idiagr;&eegr;.&iacgr;WEG'J-egrand GmbH., 477o Soest Claims - Page 6 characterized in that the webs (2o8a) formed on the cover plate (2o1) have pin attachments (2o8d) between the openings for the keys, with which they press onto the circuit board C142), possibly through the key mat (115), and/or have triangular-shaped wedge attachments (216a) formed laterally at right angles as support pillars. 7. Switching or control device according to one of claims 1 to 6, characterized in that the key mat has at least two adjacent keys for different operations, between which a separating block (219) is formed which is higher than the lower of the two keys.