DE1953261U - DECADES OR PROGRAM SWITCHES, IN PARTICULAR FOR SWITCHING ARRANGEMENTS OF PRINTED PRECISION CIRCUITS. - Google Patents

Description

Reply stating the department and the dictation code requested department: ΙνχΓ · HAN NOVER ₁

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i 1963

, ^, # ^. Am Taubenfelde 7

Our mark: ITi / ÖChO. Telephone: 14828

REFERENCE:

Decade or program switch especially for Switching arrangements of printed precision circuits

Decade switches in a wide variety of designs are known, including those which can be assembled in modular form and whose various switching positions can be digitally set and read. Any number can be lined up and coupled with one another in order to carry out program switching. They all have one thing in common: one switching level per decade, clamped in a housing or screwed in such a way that the switching wheel with its pair of contacts is stored on the one hand in the decade plate, on the other hand in the molded housing or the like. This results in the fact that the decade plate itself is subject to stresses and consequently this type of switch cannot be used as a component, for example for printed resistors, capacitors, transistors, diodes and the like.

The subject of the invention is therefore a decade switch in modular form,

a) which the use of not only one, but also two decade plates allowed without increase in size, which are simultaneously controlled by a wheel in the middle of the dolphins;

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CHECK ACCOUNT: HANNOVER 6346

F.A.G. FRESH G.M.B.H. · HANOVER

Βία »: - 2 - To the German Patent Office, 8 Munich 2 ^dated: 8.6.1963 /

b) which ensures tension-free storage of the Uekadenplatten;

c) which enables contact not only on one side per plate, but also on both sides without increasing the size;

d) which, due to its aforementioned construction, a digital input of measured values with 2.B. binary output enabled or vice versa;

e) which the stamping, printing, vapor deposition or attachment of electronic Components such as resistors, capacitors, transistors, diodes and the like. More on the switch plate (s), without that their measured value result caused by deformation of the switch plate be falsified by the type of bracket and ratchet bearing.

f) which e.g.: in an arrangement as a Wlderstande decade switch Reason for assigning a parallel resistor to the individual decade resistors the transition resistances of the contact springs to the switch plate or switch decade plates, also called switching levels, such reduces the fact that these are practically ineffective, i.e. do not go into the measurement result.

g) which in a known manner the coupling of the individual Decades to each other permitted and thus the actuation of a large number of switching levels by a ratchet wheel, but taking into account the special features for a) - f).

For example, Figures 1-7 of the application illustrate such a decade switch in block form. Ss represents:

Figure 1 A single complete switch unit (top view) Figure 2 A complete switch unit (side view)

Figure 3 A switch plate (decade plate) for example equipped with resistors

Figure 4 A ratchet wheel raits contacts

Figure 5 A complete switch unit (top view) of a decade switch, in which both levels of the decade plates are

F.A.G. FRESH G.M.B.H. · HANOVER

Blau · "3 ~ ^An <* ^as Deutsche · Patentamt, 8 München 2 dated: June 8th, 1963

be used.

Figure 6 u.

Figure 7 coupling plate with contacts to the ratchet wheel

Figure 4, side and top view.

The description is given in detail as follows:

In Fig. 3, a switch plate (7) is shown, which can consist of insulating material or metal coated with insulating material and the two ring contacts (19) and (20) carries «which are placed on the switch plate, glued, pressed, printed, stamped, vapor-deposited , or applied in some other way and conductively connected to one another by the web (22). The ring contact (19) is formed by interruptions (23) _t for example, "may be made by punching, subdivided into individual ring segments (21). These can be connected on the one hand with elements of printed circuits, such as resistors (18), which are applied to the switch plate in the same way as the ring contacts (19) and (20), on the other hand directly with Lb'tlahnen (14), ( 15), (16), (17), whereby connections to external circuits are established »'ground.

Fig. 4 shows the associated ratchet wheel (l), which is made of insulating Material and contact finger pairs on the front and back (24) which are fastened by rivets (25) on the ratchet wheel.

The tips of the contact fingers (24) that hold the moving contacts of the Represent switch, stand high and lie under their own spring tension on concentric tracks exactly above the ring contacts (19) and (207. The gripping teeth (3) serve as engagement for manual switching on the one hand and for locking the selected switching position in cooperation with the detent spring $ 13) on the other hand. The surfaces (2) next to the gripping teeth can be labeled with symbols to identify the switch positions. In the number of contact springs to be attached (24) and their mutual arrangement is largely free due to the fact that

F.A.G. FRESH G.M.B.H. · HANOVER

Βία «: - 4 - To the German Patent Office, Π Munich 2 ^of: HG1963

that the ratchet wheel (l) is provided with several rivet holes (26). Because only two of these holes are required to attach a contact spring, Not only can one contact spring be accommodated on each side of the ratchet wheel, but two or more, with a certain one There is scope in the arrangement of these contact springs against one another. In addition, the function of the ratchet wheel (1) can be expanded by coupling further pairs of contacts according to FIGS. 5, 6 and 7, see above that up to four switching levels can be switched simultaneously.

The construction of a switch unit from two switch plates (7) and one Ratchet wheel (1) is shown in FIGS. 1 and 2. The axes (5) and (6) are rigidly connected to a housing that holds the entire Program switch encloses and of which part of the front side (4) is indicated with a diaphragm opening through which the gripping teeth (3) actuated and the fields of view (2) can be observed. The ratchet wheel (1) sits rotatably on the axle (5) between the two switch plates (7). The bushing, which forms one piece with the ratchet wheel, protrudes through the bore (27) of the adjacent switch plates, the protruding Piece carries two grooves offset by 180 against each other. Spacer sockets (11) or ÖL2) keep the distance to the next switch unit. The spacer (12) serves as a clutch disc and saws two inwardly protruding 180 offset cams, which engage in the corresponding grooves in the bushings of the two adjacent ratchet wheels, and sets thus a rigid coupling between two adjacent ratchet wheels.

In this case, the coupled ratchet wheel is equipped without gripping teeth and fields of vision and is used to extend the switching program to more than two switching levels. By turning the S _c halt wheel are on the contact springs (24), the corresponding contacts are closed (segments (21) and ski ^ efbahn (20). The individual switching positions can be by the engagement of the detent spring (13) in the slots (29) is fixed in the gripping teeth (3). The tension-free and at the same time shock-absorbing suspension of the switch plates

F.A.G. FRESH G.M.B.H. · HANOVER

- 5 - To the German Patent Office, 8 Munich 2. June 8, 1963

the two quick-release axles (6) are secured by bush-shaped rubber buffers (8) allows the diameter of the holes to be matched by grooves at the points where the switch plates are inserted (28) is reduced. Seated between the quick-release axle and the rubber buffer bushing Another metallic spacer (10), which is shorter than the rubber buffer and what the limit for the approach of the switch plates

Cl

represents two neighboring units. When installing the entire switch, the rubber buffers are axially compressed, so the movements of the S _c holder plates are dampened in all degrees of freedom by the radial and axial buffering on the suspensions. In addition, because of the high deformability of the rubber in relation to the materials from which the planar switch plates can be made, deformation of the same is as good as completely eliminated.

In summary it is stated:

The importance of the invention lies

a) in voltage and shock-free switch plates of an or several decade switches, causing deformations of the plates, which falsify a measurement result, for example of resistance combinations can, are excluded. Void e.g. for all types of computing circuits.

b) in a coding and decoding option or conversion from one code to the other, etc., already through a single dial switch unit, without this increasing in size. The compact design is therefore retained.

c) in the equilateral possibility of using two Schalterdf \ ^a * n aefcalterplatten CPER ^P Inorcfnung ^e ^ ^^^^ Sfeffl -vBlKim ^ ^ dMtflWfiit

with resistors for the purpose of eliminating the transition resistance of the Contacts.

Claims (6)

M ... F ... CHE «G.M.B.H.- HANNOVER f ^^ g ^. G. g3 - 6 - To the German Patent Office, 8 Munich 2 “vom! β.6.1963 BIoIl: Claims: 1.) Decade or program switch, characterized in that the individual switch plates (7) are stored free of tension and shock, such that it is possible to arrange up to two plates (7) per switch unit (Dalade), the levels of which are from the ratchet wheel ( 1) one or both sides are coated with contacts, whereby the contacts can be arranged in different ways; possibly several per level. 2.) Decade or program switch according to claim 1, characterized in that when arranging biespielsnreise of resistors on the decade plates, the transition S- ^ i ^ resistance of the contacts is eliminated by assigning a parallel resistance, which in particular the possibility of The arrangement and use of small and very small resistors is only possible with a correspondingly low voltage and current flow. 3.) Decade or program switch according to claim 1 and 2 _f, characterized in that the switch plates, ie their switching elements (electronic components) are placed, glued, pressed, printed, stamped, vaporized or applied in some other way. 4.) Decade or program switch according to claim 1 to 3, characterized in that that the switching wheels (1) of two adjacent switch units can optionally be rigidly coupled by coupling disks (12), which also serve as spacer sleeves. 5.) Decade or program switch according to claim 1 to 4, characterized in that the switch plates (7) secured against rotation on the axes (G) via rubber buffers (9) and spacer sleeves (10) which are shorter than the rubber buffers, are stored in such a way that deformations occurring during assembly are absorbed by the rubber buffers and operational vibrations are dampened. F.A.G. FRESH G.M.B.H. · HANOVER - 7 - To the German Patent Office, 8 Munich 2 June 8, 1963 Sheet: from: 6.) decade or program switch according to claim 1 to 5, characterized in that that the ratchet wheels (l) have no pressure-wise contact with the decade plates (7), but that these through the continuous Axis (5) are intercepted.