DE2240125B2 - Switching lock with snap action - Google Patents

Description

3 4

F i g. 8 shows a longitudinal section according to FIG. 7, but in holfeder 18 and a manually operated switch

another position, push button 21, which in turn is in a guide

F i g. 9 shows a further longitudinal section according to FIG. 7, 22, or in the housing of the switch, longitudinally displaceable

again in a different position, borrowed is held.

F i g. 10 shows a detail corresponding to FIG. 9 with 5 How this electrical switch works

a locked lock, partly longitudinal section and results from the various positions according to

11 shows a detail of a switch lock in FIGS. 7 to 9. In the rest position according to Fig. 7

different design. are the movable contact pieces 12 with contact

On the basis of FIG. 1 to 6 se: first the basic clock pressure on the fixed contact pieces 13, and the principle of the switching mechanism is explained, although the input is significantly enlarged by the action of the compression spring 18 over the individual parts for the sake of clarity are drawn. In practice, the individual parts can be actuated and depressed, so they also have other dimensions. According to the locking slide 19 and the projections 19 b gelan-Fig. 1 to 6, the actuating slide 1 consists of gene in front of the protrusions 9 b, so that the actuation of an elongated rectangular plate suitable material slide 9 can initially not perform any movement rials, for example made of metal or if possible, and thus the contact pressure is maintained until the wear-resistant Plastic. The actuating slide is spring 10 fully tensioned, while the spring 11 is correspondingly relaxed in its longitudinal direction in guides 7, 8, and the locking slide 19 is pushed back and forth so far, according to arrow 3, that the projections 19 b dievorsiinge th. Approximately in the middle of the actuating slide with so 9 b and thus the movement of the actuating slide is provided, for example, a rectangular recess la , release in bers8, so that this according to FIG. 9 through which transversely to the longitudinal direction protrusions Ib, Ic effect the spring 10 is shifted abruptly protrude. Furthermore, at a right angle, the contacts 12, 13 are opened or the contacts to the actuating slide are closed by a locking slide 2, 14, 15 with contact pressure. If it is seen that the switching pushbutton 2Ϊ is also released in its longitudinal direction in 25, the guides 5, 6, according to the arrow 4, can be pushed back and forth through the angle lever 16 by the action of the compression spring 18. This locking slide 2 pivoted back counterclockwise, whereby there is also an elongated rectangular at the lever arm 16 b, the locking slide 19 back-plate, from a material moves accordingly, so that the projections 19 b now on the actuating slide. The locking slide 2 has slide along the right side of the protrusions 9 b , and while protruding outward on the outer longitudinal edges until the protrusions 19 b on the protrusions 2 a, 2 b . The height of the locking slide jumps 9 b and thus the actuating slide like 2 is, with the exception of the area of the front release, by the action of the meanwhile strong jumps 2a, 2b, the distance between the pretensioned spring 11 a sudden switching jumps Ib , Ic sized accordingly. 35 takes place and the original position according to FIG. 7th

The F i g. 7 to 9 show in a much enlarged view is taken again. The dimensions and representation of a practical embodiment of the sliding paths of the locking slide 19 and the actuating switch lock using the aforementioned supply slide 9 are coordinated with one another, slide principle, as an electrical switch that the projections 19 b with security in front of the Vormit movable contact pieces 12 and 14 and 4 ° jumps 9 b grip and thus the described pre-fixed contact pieces 13 and 15 respectively. The movable transitional locking effect with regard to the actuating contact pieces are generated at the ends of the actuating slide, with the conical slide 9 fixed or below Interposition of clock pressure deir contacts practically fully maintained or remains on somewhat resilient bridges.

brings. The actuating slide 9 corresponds to the 45 It goes without saying that instead of the contact design

the actuating slide 1 according to the conditions according to this exemplary embodiment explained above.

F i g. 1 to G. He in turn has a z. B. Right-play any other according to the application

Kige recess 9 α , in which projections 9 b corresponding contact designs, valves and the like. Selected

protrude. There is another recess 9 c can be in front.

seen in which two compression springs 10, 11 are inserted 50 If after actuation of the pushbutton switch, which do not run in the longitudinal direction of the actuating slide and after releasing the same immediately wiedei bers and their spaced apart a downshift should take place, it is useful. Ends are attached to the operating slide. to provide the switch push button with a lock The mutually facing ends of the two springs A schematic embodiment of such are on a lever arm 16 a of an angle lever 16 55 lock shows Fi g. 10. The switching pressure is then fixed. It is understood that the spring ends do not need to be firmly attached to button 35 with a transverse notch odei when they are, for. B. partial groove 35 α provided in which, after the push-button, are enclosed in a housing-like manner, so loosely inserted of the switch push button a guided bolt 37 mi can be set. The angle lever engages around one of its front end 37 δ. The row of fixed swivel joint 17 is pivotably arranged. 60 is under the pressure of a compression spring 40, which siel The other lever arm 16 b engages with its end in turn against the housing 36 is supported. In eini a recess 19 α of a locking slide 19, recess 37 α of the bolt engages at the bottom which in a guide 20, for. B. the housing, end with a bevel 38 α provided with a length is held longitudinally displaceable and which in the we- rer switch push button 38, which is sentlichen of a Druckfe the locking slide 2 according to F i g. 1 65 of 39, which in turn corresponds to 6 on the outer surface. The locking slide in turn has the housing 36 and on the other hand outer projections 19b on both sides of a ring . He- supported on the flange 38 b, in the upper position gehaltei beiarm 16 b of the angled lever engages a rear still is. If the push button switch is pressed

38, the bolt is moved to the right against the force of the spring 40, and the switch push button 35 is released, whereby the angle lever 16 and the other parts of the switch lock as described can return to their original position.

If the switching mechanism and the associated contacts, valves, etc. are to be switched in both switching directions, it is advisable to provide a mechanical drive for a lever arm of the angle lever. An exemplary embodiment is shown in FIG. 11. According to this, a rod 43 is attached to one arm 41 b of an angle lever pivotably mounted in the fixed joint 42 on a further joint 41 α, which rod can be pivoted back and forth via a joint 43 α in a direction of the arrow drawn Switching rod 45 is connected, which in turn is mounted on a support 46 of the housing 44 and a pivot axis 45 a and has a handle 456 at the end. A latching device can be provided for the shift rod in one or both end positions.

It should be emphasized that at the point of the two compression springs 10 and 11 according to the embodiment according to FIG. 7 to 9 also only use a spring that is subjected to tension and compression Can be found. Furthermore, the compression springs 10 and 11 do not need to be designed as spiral springs but can also be leaf springs used accordingly. Instead, the Lever arm 16a itself can be resilient, for example in part as a leaf spring, so that the free end engages in a slot of the actuating slide 9, similar to the lever arm 166 on the locking slide 19. Finally, a double-acting pneumatic system can also be provided.

For this purpose 2 sheets of drawings

d 1 Π 1

Claims (2)

l 2 From the German Auslegeschrift 1202 876 a patent claims: drive mechanism for an electrical Schaltei with spring force accumulators has become known, welchei 1. Switch lock with snap action, such as an elec- trically mounted angle lever, tric switches or valves, in which an actuator 5 attacks with its one lever arm on an isolated supply slide with the interposition of minde- switch rod, which in turn acts as an energy storage device in a switch box Serving spring pin ends and works with fixed switch contacts at least in its longitudinal direction and further across For sudden release see device, a pivotably mounted actuating slide by the action of the two-armed lever, two locking device spring element, actuating slide and locking mechanism, several springs, pawls and the like. Troü slide cooperating with each other before the great construction work, this mechanism has spriinge which are very sluggish to a simultaneous force, since the switching processes are exposed to considerable application, uiid projections and lent masses, in particular angle levers, isolating spring elements are designed in such a way that must be moved in both rod, switch pin, etc.
End positions of the actuating slide of this A switch lock of the type explained at the beginning, which is suspended from under spring pressure in the direction of the end position, which is assumed in the present invention, is from "Reuleaux-Mitteilungen" vol. 6, booklet 4, net that for actuating the actuating slide p. 201 is known. bers (1; 9; 23; 47) a pivotable angle lever The invention is based on the object of providing a (16; 41), one of which is provided for the switch lock, which has a structural design and a lever arm with a simple congression of the switching force low mass of the actuating (16 b) practically free of play with the locking slide 25 supply slide allows precise switching and (2; 19) interacts and the other He- continues to allow a contact pressure, z. B. with beiarm (16 a) under spring pressure in both actuating electrical switches a contact pressure or in directions of movement on the actuating slide engages. Valves a pressure on the valve seat while 2. Switch lock according to claim 1, characterized in that an actuating element extending over a period of time is indicated, that the operation of the actuating slide can be maintained and avoided (1; 9; 23; 47) engaging lever arm (16 a) that the contact pressure over a time range with two arranged on both sides before the actual switching, z. B. the lift-off springs (10, 11) connected in the longitudinal direction of the movable contact pieces of a switch direction of the actuating slide run and de- or before the lifting of a valve disk from the venous the other end of the actuating slide 3s tilsitz, reaches a value of zero. is attached. The problem posed is achieved in that to operate the actuating slide a swiveling one Angle lever is provided, one of which is füi the attack of the switching force provided lever arm 40 interacts with the locking slide practically free of play and its other lever arm under spring The invention relates to a switch lock pressure in both directions of actuation on the actuating with snap action, such as electrical switches or control slides. Valves, in which an actuating slide under intermediate An advantageous embodiment is thereby switching circuit at least one as energy storage 45 is sufficient that the one that engages the actuating slide serving spring element in its longitudinal direction fende lever arm with two on both sides and also connected transversely to the actuating slide an ordered springs, which in the longitudinal direction Locking slide also run in its longitudinal direction along the direction of the actuating slide and the latter are slidably guided, with the other end attached to the actuating slide for a sudden change release of the operating slide by the action of the 50 is. Spring element actuating slide and locking slide In the drawing, exemplary embodiments are dei About cooperating projections on- Invention shown in the scheme, namely shows show that a simultaneous application of force from- F i g. 1 is a perspective view of an actuator are set, and projections and spring element der- supply slide and one engaging in this art are designed that in both end positions of the 55 locking slide in an initial rest position, Actuating slide this under spring pressure in F i g. 2 is a perspective view of the actuator Towards the end positions. and the locking slide according to £ There are already numerous constructions of FIG. 1, but in a different position with respect to one another Snap action switch locks for electrical F i g. 3 is a perspective view again Switch has become known, which serve the purpose of 60 a different position compared to Fig. 1, a sudden opening or closing of Kontak- Fig.4 a section according to section line IV-IV ir th to effect. The known constructions are Fig. 1, usually quite complex, and they show the F i g. 5 shows a section along section line V-V ir Ntcliteji that the contact pressure at a respective F i g. 2, league opener despite snap action before the actual 65 F i g. 6 a section according to section line VI-VI ir Change over depending on the actuation time via F i g. 3, longer duration reaches the value zero, so that F i g. 7 shows a longitudinal section through a switch key the switch becomes unsafe and prone to failure. in initial rest position,