DE2904859A1 - Modifiable electric switch assembly - has rocking contact lever and handle for setting into one of two stable positions - Google Patents

Abstract

Switching characteristics determined by the different assemblies of components without the use of additional parts reduce mfg. cost of tooling as well as ensure lower storage cost when different models are employed. The contact rocker (25) can be set in two positions in the switch housing (I) with handle (II) placing switching part (22) and rocker (25) in two or one stable positions. The rocker has two shanks (27) of swept-back shape with a point facing either down or up while the housing has dogs (35-38) against which the rocker bears for circuit closing or opening. The rocking handle (II) carries an indicator lamp (12).

Description

_5_ A 12 557

h The invention relates to an electrical switch with the

■■ j ■

• Features according to the preamble of claim 1.

Vt .

Such switches are usually designed so that they can assume two stable switching positions. As an example of this

.; for that from DE-AS 1 095 350, from DE-AS 1 198 Vj

and from DE-AS 1 27 * 4-716 known electrical switches With these switch types, the contact rocker

'& assume two stable switching positions in which the con-

% clock rocker is tilted. The stability is thereby

; j is enough that the movement of the contact rocker in one direction

^(: ], · Limited by a stop on a fixed contact or part of the housing

ijj becomes, and a move the other way just against that

i | Take place force of a spring depressing the switching element

can. · ■

In the case of the transition from one switching position to the other, which is only possible through the application of external forces, the switching element becomes against the spring force the inclined contact rocker up to the tipping point the contact rocker pushed up. As soon as the tipping point is exceeded, the rocker switch turns into the second switch

position. Since the spring that acts on the switching element, wants to relax as much as possible, the switching element slides down the inclined contact rocker until it hits you ■ 'The stop hits the housing or the contact rocker, or the Movement of the handle is stopped by a stop. These

* The switch position is again in the manner already described above stable,

If an electrical circuit arrangement makes it necessary that a contact is only opened or closed briefly, it is necessary with the known switch that the handle is briefly is moved twice in a row. This is quite inconvenient for the person who operates the handle. In addition, there is thereby the risk that a switching process is incompletely carried out, so that the system controlled by the switch

© 00030/0016

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does not respond «It is also easy to forget the second switchover and thereby misdirect the system will.

You will therefore install a switch in which a switch position is stable, while it automatically returns to the first switching position from a second, without being externally any actions are necessary. With the known switches is the use of another contact rocker, the installation of other stops, fixed contacts or springs necessary between the handle and the housing. It must therefore be both the parts for a switch with two stable 'Switch positions as well as a switch with a stable and a self-resetting switch position in stock being held. Also, through the use of various Also share twice the cost of the tools to make the parts at the two counters.

Therefore, it is the object of the invention to provide a switch in which the switching properties by different Assembly of the same parts can be changed. Additional parts should not occur. This should reduce tool costs and costs for separate storage can be saved.

This task is accomplished by a switch with the characteristics that are listed in the characterizing part of claim 1, solved.

To use a switch whose parts only have stable switching positions: can take, switching positions in which the switch stops without the action of external forces, to a switch to come who has at least one stable and at least one unstable switching position in which he is only by external Forces can be held and from which it automatically returns to a stable switching position when the external forces are gone fall, only the contact rocker has to be used in different positions in the switch housing. Changes to the switch structure or the use of two different contact rockers

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• •• III · ·

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are not necessary, so that switches with different switching properties can be achieved simply by properly assembling the same switch parts can be produced. This highly standardized switch structure saves tool costs and a separate one Warehousing.

Preferably, an inventive switch will be constructed so that the contact rocker can be used in two different positions in the i switch housing and can be reached from a position 'to the other through a 180 rotation of the contact rocker about its' \ longitudinal axis. With the switching functions and switching properties, without restricting a switch according to the invention, it is primarily important to remember that the switch can and ever assume two stable and, if the contact rocker is used differently, one stable and one unstable switching position according to which fixed contacts are introduced into the switch housing, is used as changeover, normally open or normally closed contact.

It is particularly favorable when the contact rocker off

? File-like zte shape One of those

trained contact rocker, if it is installed so that the switch can assume two stable switching positions, with The arrowhead preferably points to the switching element, while (in the other position with the arrowhead it faces away from the switching element. Due to the arrow-like shape of the contact rocker is with Great security ensures that the switch from the unstable switch position automatically returns to the stable position returns. But also in the other Lagre the switching behavior is improved by this form. Especially when the switch is also used as a stable and unstable or tentative closer is to be used, an arrow-like contact rocker is particularly advantageous.

In order to be able to use the switch in other ways than a changer, stops are formed on the switch housing on which the contact rocker is in the open switch positions when used as a normally open or normally closed contact.

030031 / 001S - 8 -

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In a further development of the invention, the contact rocker carries approaches that cooperate with stops of the holder housing in such a way that the leg of the contact rocker pressed down by the switching element in the unstable switching position cannot cross a plane through the support of the contact rocker and parallel to the base plate of the switch housing, but for safe reasons Resetting is stopped far above. The contact rocker can also be straight. In the position with two stable switching positions, the approaches sweep past the aforementioned stops because they are only on one side of the contact rocker and change their position when the contact rocker is rotated or because they are on two opposite sides of the contact rocker but outside the axis around the the contact bridge must be rotated when transferring from one position to another, and / or are arranged offset from one another. ρ

In the case of the self-resetting normally open contact with an arrow-like contact rocker, the movement of the contact rocker is controlled by the contacts | so limited that the leg pressed down in the unstable closed switch position voidly crosses the above-mentioned plane. H

If, as in a further embodiment of the invention, the contacts that are to be acted upon by the contact rocker are always; |; sit on the same side of the tipping point of the contact rocker and | are always touched by the same leg of the contact rocker, kani $ i the other leg can be shortened. This makes it possible to use IA

ψ). to keep the bridge mass low and thus to positively influence the bouncing behavior of the contact rocker and to build the switch extremely short. The one-sided arrangement of the necessary fixed contacts below and / or above one leg of the contact rocker, depending on whether the switch is to be used as a changeover contact, make contact Ep or break contact, also makes it special || easy, with changer or closer with an arrow-like egg $ | Contact rocker to maintain the tactile properties of the switch. ■ ti!

03-030 / 0015

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By measures according to claims 7 to 10 it is achieved that the contact rocker © when the switch as a normally open contact or NC contact is used, when used as a button, rests on different stops of the switch housing than when used y with two stable switch positions. In addition to this, for sure

guaranteed return of the contact rocker from the unstable In the stable switching position, the special spacing of the stops still offer the advantage that the switching path in spite of the keyed normally open and normally closed contacts

Elimination of a welding contact is the same as with

U changeover contact, thus the switching behavior remains constant. if

() the stops are attached in this way, the £ f switch can, in addition to the switching functions, have stable switching

lungs can only be used as either a keyed break contact or a keyed make contact, as only one group of the stops

k according to claims 7 and 10 can be present. This can

however, such a switch can be accepted

: | mostly as a stable or keyed opener on the one hand and as

stable or keyed normally open contact is used on the other hand

will be.

However, it is also possible to use the switch for two next to each other to provide horizontal contact rockers. It is advantageously designed so that in the self-jerk switching division one contact rocker a contact is closed, so that this works as a normally open contact, while with the other, the

_{m works} as a break contact, the contact is interrupted. On the

on the one hand, therefore, the stops according to claims and 10, possibly also according to claim 8, on the other hand which according to claims 7 and 8 may also be present according to claim, provided that constant switching behavior is desired is.

The advantageous developments of the switch according to the invention according to claims 12 and 13 ensure even greater security in the automatic return of the contact bridge, if the switch is used as a button. The offset between the tipping point of the contact rocker and the switching point of the switching element is therefore still very cheap,

030030/0015. ₁₀ _

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veil thereby the contacts at the dead center of the switching element are exactly closed or open. This defined state thus prevents a Z ins on which is harmful to the contacts.

The invention is explained and described in more detail below with reference to the exemplary embodiment shown in the drawing.

Show it:

1 shows a section through a switch according to the invention with an arrow-like contact rocker, which assume two stable switching positions in the position shown can,

Fig. 2 is a plan view of the bottom plate of the switch from Fig. 1,

3 shows a detail from a side view of the switch according to FIG. 1, but with one turned by 180 Contact rocker that can assume a stable and an unstable position and as a normally open contact works and

FIG. K shows a top view of the contact rocker according to FIG.

The switch housing 1 of the switch given as an example consists of a base plate 2 in which the plugs 3 of the fixed contacts 4, 5 »6 and 7 are anchored, and an upper part 8 together, which is used to attach the switch to the body with a protruding edge 9 and resilient Wings 10 is provided.

In the upper part 8, the handle 11 is mounted, which acts as a rocker switch is trained. In the rocker switch 11 protrudes the lamp 12, which in the dark over the fixed contact 7 and a further fixed contact 13 visible in FIG. 2 with current can be supplied so that the rocker switch 11 is illuminated.

030038/0015

► ft · ft ft ft 4 ft ft «ft

»Ft · ft · ft ft ·» φ ft ft ft

• ft * ft ft ft ft *

• t ft ft ft · ft »ft ft ft» ft

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In the position shown, the light can leave the rocker switch 11 through the symbol carrier lh. This makes it easy to see where the switch is located and which switching functions it performs, even in the dark. 1 shows the switch in the normal position. If it is now actuated, the light from the lamp 12 can also exit through the window 15, so that the two possible switch positions can be easily distinguished The tilting movement of the rocker switch is limited on both sides by the webs 16 of the upper housing part 8. The switching element 20 consists of a guide 21 firmly connected to the rocker switch 11, into which the switch pin 22

^ is inserted · The coil spring 23 presses this bolt against the rocker switch 25.

This is formed by the two legs Z6 and 27: which are of different lengths and meet at an angle, so that the contact rocker 25 is given an arrow-like shape. As can be seen particularly clearly in FIG. K , the contact rocker has two recesses 28 on the side, which receive the upstanding projections 29 of the fixed contact 6 , so that the contact rocker 25 is securely mounted on the one hand and permanently electrically connected to the fixed contact 6 on the other is. The two recesses 28 and thus the bearing points of the contact rocker 25 are located entirely on the leg 27. This has the consequence

(^ that the tipping point of the contact rocker 25 and the switching point of the switching pin 22 are offset from one another both spatially and temporally. The storage that the contact rocker secures against horizontal displacement, so the recesses 28 and the approaches 29, are in the area of the rocker tipping point, so that the contact rocker 25 during a switchover only a slight vertical movement at the bearing parts executes.

In the exemplary embodiment, the long leg 26 of the contact rocker 25 carries two welding contacts 30 and 31 which can act on the contact beads 32 and 33 of the fixed contacts k and 5. The switch shown works as a changeover contact. The switching pitch in which the switch is shown in Fig. 1 is stable, i.e. no part of the switch moves without it

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the effect of external forces from its position. A twisting motion the contact bridge 25 is counterclockwise by the contact of the welding contact 31 on the contact bead 33, a clockwise movement is prevented by the switching pin 22 depressed by the spring 23. The actuating rocker 11 is also actuated by the spring 23 on the right web 16 held.

If the actuating rocker 11 is now tilted from the outside, the switching pin 22 slides up the leg 26 of the contact rocker 25, the coil spring 23 being more strongly tensioned. ₍ ; j Finally, the switch pin reaches the interface between the legs 26 and 27, its dead center. Since this point is still if to the left of the tilt point of the contact rocker 25, the lower | contact is still closed. § wippö 11, the switching pin 22 slides with the support of the spring 23, which can relax. The leg 27 down until the rocker switch 11 strikes the left web 16. When the rocker tipping point was passed, the leg 26 of the contact rocker 25 was turned up and is now with the welding contact 30 on the contact bead 32. The position that the switch η assumes is stable in the same way as that shown in FIG.

(The switch shown can easily be used as a normally open or normally closed contact | be used. If it is to function as a normally open contact, the lower fixed contact 5 is omitted, in the case of a training as The upper fixed contact 4 is not normally closed. For these cases, am Switch housing stops 35,36,37 and 38 formed in the open switch positions stop the contact rocker 25.

The arrangement and mode of operation of these stops can be seen clearly in conjunction with the other figures in the drawing. Fig. 2 shows that the switch to accommodate two adjacent identical contact rockers are provided, which are securely isolated from one another by the web 41. Of the

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Only the stops 35, 37 and 38 work with the stops from FIG. 1 together with the contact rocker 25 used. The stop and corresponding stops 35 and 38 act on the second

. Contact rocker, which is not shown. The contact rocker 25

% can therefore only be used as a changeover contact, normally open contact, normally closed contact and keyed

^ Normally open contact, the other contact bridge as a changeover contact, normally open contact

Opener and keyed opener can be used. The stops 35 and ji8 are now so far removed from the fixed contacts h and 5 that oils do not prevent contact being made when the fixed contacts h and 5 are present The Lago shown is rotated by 180 about its longitudinal direction are just as far away from the fixed contacts k and 5 that the switching path does not increase if a welding contact 30 or 31 and a fixed contact h or 5 are omitted.

In Fig. 2, the stops 38, which are available for both.Kontaktwippen, and their position can be seen. Since these attacks are acted upon only by the outermost parts ko of the leg 26, they all have the same height. They stop the downward movement of the contact rockers when they are used as stable make contacts. In addition to the stops 38, the stops 37 can also be seen in FIG. They are missing for the second contact rocker. The contact () rocker 25 shown in FIG. 1 lies on them when it is used as a keyed closer. It then assumes the position shown in FIG. 3, in which it is rotated relative to that in FIG. 1 by 180 ° about its longitudinal direction. The fact that the contact rocker 25 acts on the stops 37 in the other, on the other hand, the stops 37 in one position, is achieved by the two lugs 39 which are arranged on the contact rocker 25 offset from one another. One can realize easily that the lugs 39 lie exactly over the stops 37 when the contact rocker 25 in the position shown in FIG. 3 is used, but that the outer part ko of the arm 26 coacts with the stops 38 when the contact rocker 25 rotated by 180 °. The stops 35 stop the movement of the rocker contacts upwards when they function as a stable opener. When one contact rocker is used as a keyed opener, its upward travel is limited by the stops 36.

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This is done in the same way as has already been described for the stops 37 _a Since the leg 26 is inclined in each case with respect to the base plate 2, the respective stops j6 and 37 are at slightly different heights.

FIG. 3 forms a section from FIG. 1. However, the fixed contact 5> is now missing and the contact rocker 25 is inserted with the arrowhead pointing downwards, as shown in FIG. K. It works as a keyed normally open contact and, in the stable, open switch position, rests with its lugs 39 on the stops 37. The switching pin 22 pushes the leg 26 downwards. J When the switch is actuated, the switch pin is moved to the right and rises up leg 27. The leg 26 is tilted upwards when the rocker tipping point is exceeded and has established a conductive electrical connection between the fixed contacts k and 6. The arrow shape of the contact rocker 25 and its high mounting relative to the stop 37 cause the leg 27 to still be inclined upwards, so that after releasing the actuating rocker, the switching pin 22 and the contact rocker 25 return to the starting position. In this case, it is again advantageously noticeable that the edge h2 between the legs 26 and 27 does not sit exactly above the rocker tipping point. This is because the switching pin 22 only reaches the flat leg 26 when the contact rocker 25 has already tilted back again. This will safely open the contact in any case.

The embodiment makes it clear that no additional parts or any changes in the shape of the contact rocker or the switch housing are necessary to move from a switch that only has stable switch positions to one

get the both stable and keyed switch positions

• if. Only the welding contact of the contact rocker has to be on vei |

ί Different sides attached and the contact rocker in different

Licher way can be used in the switch housing.

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It should also be pointed out that there is an arrow-like Contact rocker is even possible by making slight changes to the height of the various stops compared to the described embodiment to build a switch according to the invention, depending on the Pestkontakten used and Depending on the position of the rocker switch, as a changeover contact, as a changeover contact that is buttoned in one direction, as a normally open contact, as a buttoned normally open contact, can be used as a break contact and as a push button break contact.

G3003 & / 001E

Claims (1)

SWF special factory for car accessories Gustav Hau GmbH. 7120 Bietigheim-Bissingen PAL / A 12 557 Nickel / Tü December 6, 1978 Claims; (1 ^ Electrical switch with a switch housing, with a - Thereon mounted handle, a switching element that is connected to animal handle for the transmission of motion, with a contact rocker acted upon by the switching element by spring force, which can take several switching positions, and with at least two fixed contacts, one of which is permanently in electrical contact with the contact rocker, characterized in that the contact rocker (25) in at least two various positions in the switch housing (i) is, wherein in at least one position the handle (ii), the Switching element (22) and the rocker contact (25) in two stable switching positions and in at least one other position in at least one stable and at least one unstable switching position are adjustable, from which they automatically into the return first. 2. Electrical switch according to claim 1, characterized in that that the contact rocker (25) has an arrow-like shape composed of two legs (26,27) and that it is in one Position in which the arrowhead points downwards and a position in which the arrowhead points upwards into the switch housing (i) can be used. 3 «Electrical switch according to claim 1 or 2, characterized in that that on the switch housing (i) stops (35,38 and or 37) are formed on which the contact rocker (25) at Use of the switch as a normally open or normally closed contact is present in the respective open switch positions. 030038 / $ 001 -2- A 12 557 k. Electrical switch according to claim 1, 2 or 3 »characterized in that the contact rocker (25) has at least one shoulder (39) protruding from the mass of the contact rocker (25) on an outer surface, that at least one stop (36) on the switch housing (1 ) in an unstable switching position of the contact rocker (25) can be acted upon by the extension (39) thereof, and that the angular distance between the stop (36) and extension (39) is smaller than the angle that the switching element (22) in the unstable open Switching pitch depressed legs (27) of the contact rocker (25) in the stable switching position with a plane parallel to the base plate (2) of the switch housing (1). 5. Electrical switch according to claim h, characterized in that the contact rocker (25) carries on two opposite edges lugs (39) which lie outside an axis about which the contact rocker (25) is rotated when moving from one insert position to a second , and which are arranged offset from one another from one edge to the other. 6. Electrical switch according to at least one of the preceding claims, characterized in that the contact rocker (25) to be acted upon fixed contacts (h, 5) sit on one side of the tipping point of the contact rocker (25) above and / or below the contact rocker (25), and always the same leg (26) of the contact rocker (25) serves as a contactor. 7. Electrical switch according to claim 6, characterized in that the switch housing (1) stops (36) are integrally formed, which are in the position of the contact rocker (25) in which a switching position ® is unstable, limit the upward path of the contact rocker (25), and its angular distance from the contact rocker (25) in (U of the lower switching position of the contact-making leg (26) ^ is as large as the angle made by the contact rocker (25) fixed contacts (4,5) *. When switching over, this angle is smaller than the angle that the leg (27 forms) of the contact rocker (25) in eggs iUla'dc "ick * ^ Sfcstellung with a plane parallel to the bottom plate (2) of the Schaltergehauses (1). -3- - ^{A 12} 557 8. Electrical switch according to claim 6 or 7 »characterized in that further stops (35) on the switch housing (i) |> are formed, which are in the position of the rocker switch (25) in which the switching positions are stable, in the absence of an upper fixed contact (4) limit the way of the contact rocker (25) upwards, and their angular distance from the contact rocker (25) in the lower switching position of the contact-making leg (26) is greater than the angle that the contact rocker (25) at above and fixed contacts below it ('+, 5) is passed over when switching. 9 · Electrical switch according to at least one of claims 6 C to 8, characterized in that stops (38) are formed on the switch housing (1) which, if the lower fixed contact is missing (5) limit the downward path of the contact rocker (25) and its angular distance from the contact rocker (25) in upper switching position of the contact-bearing leg (26) is greater than the angle that the contact rocker (25) at> ' above and below existing fixed contacts (4, 5) when switching over. 10.EIektriseher switch according to claim 9> characterized in that the switch housing (1) further stops (37) are formed, which in the position of the contact rocker (25) in the one switching r position is unstable the path of the contact rocker (25) downward limit, and their angular distance from the contact rocker (25) if the lower fixed contact (5) is present in the lower switching position of the contact-making leg (26) is equal to zero. 11. Electrical switch according to at least one preceding claim, characterized in that the switch has adjacent rocker switches, and that on the switch housing (1) Stops (37,38 or 35 »36) are formed on different levels, which the way of a contact rocker limit downwards and that of the others upwards. 030038 / 001S 29048B9 -k- A 12 557 12.Electrical switch according to at least one of the preceding claims, characterized in that the contact rocker (25) is mounted such that the bearing point with respect to approximately simultaneously existing fixed contacts (^, 5) above and below the contact-making leg (26) of the contact rocker (25) is above the middle between the upper and lower fixed contact (k, 5). | 13 »Electrical switch according to at least one of the preceding Claims with an arrow-like contact rocker, characterized in that the tipping point of the contact rocker (23) and the changeover point of the switching element (22) against each other are offset » - 5 QSOO3D / 00U