DE7403509U - LONGITUDING SEVERAL SINGLE KEYS EXTENDING WIDE KEY - Google Patents

Description

Standard Elektrik Lorenz AG
Stuttgart

P.Bachinger-K.Hurnik 1-1

Along several individual keys extending

wide key

The invention relates to a length of several individual keys extending wide key with at least two key sliders and a return spring is in operative connection. The need for the invention exists in particular in keypads with lift actuation, which in addition to individual keypad elements is opposite these contain a much wider keyboard element that extends along a number of individual elements extends. Examples of this are the space bar of a typewriter or data entry keyboard, in particular an optically coded input keyboard mentioned.

The data entry keyboard is a subsystem of a data processing system. The data processing requires highest reliability and a high number of key presses. In particular, must be easy for one The keyboard to be used is provided if the coding in the keyboard element is carried out optically, because with a "so-free" keyboard a code mix can occur and thus the entry of a wrong one Zeiohens.

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P.Bachinger-K.Hurnik 1-1

In the case of a known wide key, the guide takes place via a shaft, which on the one hand is in a recess the key slide of a keyboard element and on the other hand is mounted in the eyelet of a stationary part. "Both shafts are with a sheet metal rocker and both Key slide firmly connected to a key button. In the known case, when pressing the key button both the key slide and the guide shafts even with low manufacturing tolerances tilt, so that the ease of movement of the keyboard is in question. The risk of tilting each one Components are particularly large when the key top is depressed at the ends.

The object of the invention to provide a wide button keypad, allowing the l _eh depress even when operated anywhere, smoothly and without tilting. The assembly of the parts required for this should also be simple and reliable. This object is achieved with a wide key of the type mentioned according to the invention in that the key is guided over a cranked wire bracket, the two ends of which are rotatably mounted in slides of the keyboard elements, while the legs of the wire bracket which are approximately perpendicular to the bracket ends are taken up by permanent sons' camps. The embodiment of the invention ensures perfect parallel guidance, even if the button is pressed at any point. The invention is based on the design problem, always only two components with little play

P.Bachinger-K.Hurnik 1-1

to connect with each other, while the connection of the third component then takes place with a certain amount of play. The components required for guiding the button according to the invention are of simple design and therefore accessible to mass production. They allow easy assembly and ensure even with larger manufacturing tolerances a safe function.

The concept of construction, only two components at a time to connect with one another with little play, according to an advantageous development of the invention realize that the wire bracket is positively connected to the key slides of the keyboard elements. This connection can be made in a particularly simple manner by fitting the wire bracket in Openings of the key slide is mounted with a slide fit. This results in better backlash-free storage and thus a more precise parallel guidance is achieved.

Also for the connection of the key button is of the mentioned design idea, only two components each To connect with little play, use is made of the wire bracket with the associated key button is positively connected, while the key slide to accommodate the wire bracket in the key button are arranged in an exposed manner. This connection can thereby be established in a particularly simple manner that the key button on both temple ends after is attached to a child mechanism.

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For an exact parallel guidance of the button are for the approximately perpendicular to the temple ends Leg of the wire hanger blade bearing provided, which is "particularly easy to use" with lead flaps can be formed, which are formed on the fastening frame of the button. These sheet metal rags can be made from the mounting frame by punching out and then bending it out.

So that the wide key can be arranged anywhere in the keypad and with different lengths can, it is advantageous if the sheet metal tabs are formed on a separate bearing rail, which is attached to the mounting frame in a longitudinally displaceable manner. It can be advantageous to use a large number of sol-15 to arrange the metal tabs at the grid spacing of the keyboard elements on the mounting frame or on the bearing rail, thus a wide one without moving the bearing rail or adapting the mounting frame Button of any length can be mounted anywhere.

To support the parallel guidance of the key, the return spring is in the middle between the cutting edge bearings arranged. This return spring can be designed as a helical spring, which is particularly simple Can be fastened by covering the wire hanger with one bent end, while the other curved end in a fixed attachment of the fastening frame is hooked. Also the stationary approach

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can be made by molding on the mounting frame will. The return spring presses the button in the off ' gangsiage and also prevents the bracket from lifting off from his sons' camps

Further details of the invention will be explained with reference to the drawing from which a preferred embodiment the invention is ersiohtlioh. Show it:

FIG. 1 shows a side view of a key built into the fastening frame of a keypad according to FIG Invention;

FIG. 2 shows, in section along section line A-B, the key shown in FIG. 1;

FIG. 3 shows this key in a plan view;

Figure 4 in section a further embodiment of a Button according to the invention.

The broad key 10 shown in the drawing is a subsystem of an optically coded input keyboard, which also contains individual keyboard elements 20, 30, 4-0, 130, HO. Any solo keyboard element contains several possible positions for the key slide (button) 21, 31, 4-1, 121, 131, HL Daduroh a staggered arrangement of the buttons can be made with individual elements 20, 30, 40, 130, HO and thus build up multi-row keypads.

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The individual keyboard elements 20, 30, 40, 130, HO contain a coded aperture that can be accessed via a ' Sonappfeder 32 acting as a return spring is also moved. When pressing a keyboard element 20, 30, 40, 130, 140, the diaphragm is briefly through a beam path duroh the son appmaohanism led and then takes a new position of rest. The diaphragms of the actuated Fastatur elements 20, 30, 40, 130, 140 thus interrupt the light rays that represent the code of the entered digit. If, on the other hand, no keyboard element 20, 30,. 4Q ^ I3O, HO When pressed, the light rays strike photosensitive elements unhindered. The second actuation of the Keyboard element 20, 30, 40, 130, HO moves the panel back into place via the snap mechanism the first rest position and in turn generates a character. The keyboard elements 20, 30, 40, I30, HO are only used in>. Lnen mounting frame 50 attached. So that the individual elements 20, 30, 40, 130, HO are easily exchangeable, so that the Keyboard can be recoded without any problems.

The wide key 10, 110 represents the space bar for such an optically coded input keyboard. Ease of use is a prerequisite for safe handling of this input keyboard. the Space bar 10, 110 is for this purpose, over a cranked Wire bracket 60, 160 guided in parallel, in that both bracket ends 61, 62 in key sliders 21, 41 of the keyboard elements 20, 40 rotatably mounted ^ aind,

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while the bow handles 63, 64 ″ or 163, which run approximately perpendicular to the bow ends, are held by stationary Sohneidenlager 71, 72, 201. These> blade bearings are formed by sheet metal tabs 73, 74, 203, which are attached to the fastening frame 50 or to separate bearing rails 70, 170, 200. In the embodiment according to Figures 1 to 3, these sheet metal tabs are not formed directly on the mounting frame 50 but on a bearing rail 70 attached to it 51 for hanging in the keyboard elements 20, 30, 40. On the other hand, it is possible, by using a further bearing rail 200, to move this along the fastening frame 150 so that the cutting edge bearings 201 provided for receiving the wire bracket 160 are at the desired position Place come to rest (FIG. 4). In particular, a large number of Bl Echlappen 203 in the grid spacing of the keyboard elements 20 _f 30, 40, 130, 140 be attached to the bearing rail 200 so that a space bar of any width can be mounted anywhere. The sheet metal tabs 73, 74, 203 together with their cutting

2 * 5 bearings 71, 72, 201 can easily be through Punching out of the fastening frame 50 or the bearing rail 70, 200 and then bending it out are made when the mounting frame or «the bearing rails are made of sheet metal.

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For further storage, the wire bracket 60, 160 is positively connected to the key slides 21, 4I, 121. For this purpose, the key slide 21, 41, 121 adapted openings 22, 42 in which the Wire bracket ends 61, 62 are mounted with a sliding fit. This form-fitting connection between the pushbutton switches 21, 41, 121 and the wire bracket 60, 160 enables a practically play-free storage and thus an exact parallel guidance of the key 10, 110. To support the desired parallel guidance are the slide keys 21, 4I, 121, which are used to accommodate the Wire brackets 60, 160 are used, in the key top 80, 180. the space bar 10, 110 arranged in a cantilevered manner. on this means that the slides 21, 41 and 121 are tilted against one another and thus the space bar is tilted 10, 110 excluded. In contrast, the wire bracket 60, 160 is form-fitting with the key button 80, 180 tied together. For this purpose, resilient webs 81 arranged in the interior of the key button 80, which the Include temple ends 61 and 62 according to a snap mechanism. The assembly of this key button takes place thus by simply plugging onto the wire hanger ends 61, 62 until the two spring bars snap into place 81. The bearing play in the stroke direction is largely excluded. While the two key switches 21, 4I of the two keyboard elements 20, 40 only for play-free storage of the wire bracket 60 serve and are therefore arranged in an exposed manner in the cavities 82, 83 of the key top 80,

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can a second connection of the key top with a key slide 51 of the keyboard element 30 after the above-mentioned construction principle, only two components are always free of play to connect with each other. The key button 80 is therefore with the key slide 31 of the keyboard element · » tes 30 in a form-fitting connection made by the snap spring 32 of the keyboard element ■ is by resiliently pressing the key slide against the inner wall of the cavity 84. To this The purpose is the snap spring 32 between a fixed blade bearing in the keyboard element and one with the Key slide 31 connected cutter bearing 33 clamped. The actuation of the key slide 3I produces a curvature of this snap spring that lasts as long increases until the spring snaps to another stop due to instability. This is the keyboard element 30 assigned diaphragm moved along. Since the third key slide 31 is sprung against the key top 80 any play between the bracket and the key button can be compensated for.

A helical spring is used as the return spring of the button 10, 110 90, 190, which support the parallel guidance in the middle between the cutter bearings 71, · 72, 201 is arranged. This coil spring is fastened in a simple manner by being bent with a The end of the wire hanger 60 includes, while the other bent end in a stationary lug 75 of the

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Bearing rail 70 is suspended. The helical spring 90, 190 presses the button 10, 110 into the zero position and prevents the bracket 60, 160 from lifting off the cutting edge bearings 71, 72, 201.

The assembly of the parallel guidance of the space bar 10, 110 required components is extremely simple, since the individual components are only connected to each other by plugging. So that the wire hanger 60 even when the keyboard elements 20, 30, 40 are already installed in the openings 22, 42 of the key slide 21, 4I can be inserted, it can be advantageous to use the bend in contrast to the exemplary embodiment shown to move further inwards. Thus move the bracket legs 63, 64 and their assigned Cutting edge bearings close together * It is also possible to eliminate any play between bracket 60 and key button 80 instead of the spring-loaded pushbutton slide • 31 to be compensated by a separate spring.

List of reference signs

10, 110 key, space bar

20, 30, 40, 130, HO keyboard element

21, 31, 41, 121 key slide

22, 42 opening

32 snap spring

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50, 150 mounting frame

51 slot

60, 160 wire "bracket

61, 62 temple ends

63, 64, 163 bracket legs

70, 200 bearing rail

71, 72, 201 cutting edge bearings 73, 74, 203 sheet metal tabs

75 approach

80 key button

81 spring bar 82, 83, 84 cavity

90, 190 coil spring

11 claims
4 sheets of drawings

Claims (11)

•• '! IS' · iSt * "? - 12 P.Baohlnger-K.Hurnik 1-1 • Τ a L y ii — l # - | nspiüohe 1.) Along several keypad elements extending wide key that has at least two keystrokes and a return spring in operative connection stands, daduroh characterized in that the key (10) is guided via a cranked wire bracket (60), both ends of which (61, 62) in sockets (21, 4-1) of the keyboard elements (20, 40) are rotatably mounted, while those extending approximately perpendicular to the temple ends Bow legs (63, 64) of stationary cutting edge bearings (71, 72) are included. 2.) button according to claim 1, characterized in that the wire bracket (60) with the TaL snschiebern (21, 4.1) is positively connected. 2 ·) key according to claim 2, characterized in that the wire bracket (60) is mounted in adapted openings (22, 42) of the key slide (21, 41) with a sliding fit is. 4) button according to one of claims 1 to 3, characterized in that that the wire bracket (60) is positively connected to the associated key button (80) is, while the key slide (21, 41) for receiving the wire bracket in the key top is cantilevered are. 7403509 10.1177 f · · It Il III) I S · «· I I III • · (Il I Il I MM • · · III 1 I ft '·· I ··) ·· ·> - 15 P. Baohinger-K. Hurnik 1-1 5.) button naoh claim 4, daduroh characterized that the key button (80) is connected to both temple ends (61, 62) naoh a child mechanism. 6.) key according to claim 4 or 5, äaduroh characterized in that the key button (80; with a further Key slide (31) is positively connected. 7 ·) key according to one of the speeches 1 to 6, thereby characterized in that the return spring (90) is arranged in the middle between the blade bearings (71, 72) is. 8.) button according to claim 7 »characterized in that the return spring is a helical spring (90) • is, which includes the wire bracket (60) with one bent end, while the other is bent The end is hooked into a stationary extension (75) of the mounting frame (50, 70). 9 ·) button according to one of claims 1 to 8, characterized in that the cutting edge bearings (71, 72, 201) are formed by sheet metal tabs (73, 74, 203) which are attached to the mounting frame (50, 70, 200) are arranged. 10.) button according to claim 9, characterized in that the sheet metal tabs (203) on a separate Bearing rails (200) are arranged which are attached to the mounting frame (50, 170) so as to be longitudinally displaceable is. 7403509 10.1177 • * * · I Kt tttt ^; i. 5 " ! I t I I ■. -H-P.Bachinger-K.Hurnik 1-1 11.) button according to claim 9 or 10, characterized in that that a plurality of sheet metal tabs (73, 74, 203) in the grid spacing of the keyboard elements (20, 30, 40, 130, 140) on the mounting frame (50) or on the bearing rail (70, 200) is arranged. Kb / on - January 28, 1974 7403509 10.1177