DE1240162B - Push button switch - Google Patents

Description

GERMAN PATENT OFFICE

EDITORIAL

German class: 21c -39/02

Number: 1240 162

File number: F 42398 VIII d / 21 c

1240162 Filing date: March 23, 1964

Open date: May 11, 1967

The invention relates to a push button switch in which a slider is used for two-step operation is provided with a groove guide effecting the locking positions, into which one of the pushbutton actuated slide pin engages and when actuated the slide laterally into the locking positions or shifts from these.

For example, the German Auslegeschrift 1133 006 is a push button switch with a latching device known, which has two switching positions with a locking member that has a curved belt carries two end connections into which a sliding, resilient switching element is firmly attached, engages in the plane of the cam moving locking pin. With this push button switch it is actually possible to arrange several switches next to each other, but this requires the known Execution of a summation of the tolerance errors, so that a limitation of the maximum possible number of combinable switches is unavoidable.

The invention is based on the object of providing a push-button switch with two-step actuation create that can be used individually or as a combination of several individual switches. in the In the case of a combination of several individual switches, it should above all be ensured that the entire arrangement forms a so-called push button switch of this type, in which, as is known, when Latching a pushbutton disengages a pushbutton that may have been locked in beforehand.

This task is performed with a push-button switch in which a slide piece is used for two-step operation is provided with a groove guide effecting the latching positions, into which one actuated by the pushbutton Slide pin engages and when actuated the slide laterally into or out of the latching positions moves, solved according to the invention in that approximately perpendicular to the one formed by the push button one-armed lever a movable part in this direction is provided, which by means of spring force is pressed laterally against the push button and which carries the sliding pin, which is perpendicular to the direction of displacement this movable part protrudes from this, and that the transverse to the pivot axis of the Push-button displaceable slider, exclusively displaceable, mounted in front of the movable part in this way is that the slide pin engages in the groove guide of the slide.

It is advantageous if the pushbutton switch is designed so that the one closed in the slider Groove guide forming a curve with regard to its for the contact of the end face of the slider Push button switch

Applicant:

FUJITSU LIMITED, Tokyo

Representative:

Dip.-Ing. R. Barckhaus,
Graefelfing near Munich, Maria-Eich-Str. 53
and Dipl.-Ing. M. Schlenk,
Munich 27, Beblostr. 5, patent attorneys

Named as inventor:
Yuichiro Yanauchi,
Shoichi Sakagami, Kawasaki (Japan)

Claimed priority:

Japan March 23, 1963 (38-15 190),

dated December 28, 1963 (38-97966)

I.

certain base surface is so deep that in a first groove section a wedge surface inclined with respect to the direction of displacement of the slider is created as a lateral guide for the slide pin, which is deepest in terms of the depth of immersion of the slide pin and the one at the end of the wedge surface in one less for the slide pin deep second groove section passes over, which merges with a stop to limit the movement of the slider and a latching into the starting area of the first groove section leading back third groove section, which joins the first groove section abruptly, and that in the middle part of the wedge surface another abrupt transition from the second groove section is provided in the first groove section, and also the width widens in the first groove section in the displacement path of the slider that a free displacement path of the sliding pin is given by the length of the driving path through neighboring sliders.

Furthermore, it is advantageous if the design is also made so that several pushbutton switches are provided, in which the sliding pieces of the switches in series along their direction of displacement over, in particular as semicircular grooves and semicircular projections.

709 579/335

formed connecting elements are connected that a locking point in the groove guide of the slider it is provided that, in conjunction with the slide pin, the pushbutton is pressed on a first press engages when all other switches are released and also when pressed a second time is released to disengage.

Another advantageous embodiment is characterized in that a groove part is provided in the slider is, which in connection with a lock restricts the displaceability of the slider in such a way that that a switch is only disengaged by engaging another switch.

The invention is explained in more detail below on the basis of exemplary embodiments.

Fig. 1 is a perspective drawing of a push button device according to the invention, and FIG. 3 is a perspective drawing of the switch of FIG. 1 taken from several Directions (Fig. 3, A, 3, B and 3, B ') seen. As can be seen from the drawing, there is the frame made up of the two side plates 1, Γ, which are symmetrically arranged and bent. To the bent parts 2, 2 'of the side plates 1, 1' are the metal spring contact groups 3, 3 'by screws 4, 4 'attached. The F i g. 3, B and 3, B 'show the opened frame and the inside of the push button switch, while the F i g. 3, A represents the push button.

In the slot 5, which is inserted in one of the side plates 1, 1 ', the insulating plate 8 with the indicator lamp sockets 7, which have soldering tails 6, is held by their projection 9. A movable part 12, which carries the pushbutton shaft 11, with the return spring 10 at the lower end, has comb pressure parts 13, 13 'bent on both sides of the pushbutton shaft. In addition, a projection 15 is provided on the outside of the arm 14, 14 ′, which is arranged outside the two comb pressure parts and the bending part 16 at the upper end of the movable part 12.

With 17 a sliding pin is referred to, which can be moved up and down in the direction of the shaft, and the direction of force indicated by the arrow a is given by the spiral spring 91 (Fig. 2) , which is welded to the movable part 12 'and between the holding plate 18 and said movable part 12 is embedded. 19 with a sliding, molded plastic part is referred to, which is used to lock the pushbutton shaft 11 when actuated and in the rest position, in the middle of which a guide groove 20 for the slide pin 17 is provided.

On one side of said sliding part two semicircular projections 22 are provided, which elastically engage in a semicircular groove 21. A tension spring 25 is between the round hole 24 is provided at the upper end of the side plate 1 'and the hook 23, which is located on the upper End of the slider is located.

Within the wall of the ends of the side plates 1, 1 'are thin plates 27, 27' for formation of pointed projections 26, 26 'welded onto the lower ends 28, 28'. The bearing part 48 is formed by the projections 26, 26 'and the U-shaped recesses adjoining the projections 26, 26' 29, 29 'of both side plates.

After such assembly that the projection 9 of the insulating plate 8, through which the how side plate 1 in

the side plate 1 is fixed, engages in the slot 5 of the side plate 1 'and that the projection 15 of the movable part 12 lies in the guide slot 30 which is provided on the side part 1 ', and that the lower end 31 of the pushbutton shaft 11 lies in the groove parts 33, 33 'which are in the bent parts 32, 32' of the side plates 1, 1 'are provided, and that the slide 19 into the slide guide window 34, 34' intervene, which are provided at the other end of both side plates, the whole thing is through small screws that go through the screw holes 35, 35 ', 36, 36' screwed together. In the push button device of this construction, the comb push part 13, 13 'is the movable part 12 mounted in the rest position of the contact at the end 38, 38 'of the comb 37, 37' of the contact spring group 3, 3 ', and the slide pin 17 is located at the deepest part 0 of the guide part 20 of the slide part 19. With 39 denotes a pushbutton body molded from plastic material in a box shape. The lead 40 is at the lower end and the shaft 41 of the tubular projection is at the other end intended. All these parts are molded together with 39 from insulating material. At 42 is a thin one Plate of a transparent body referred to, which in the side parts 44, 44 'has an opening 43 for receiving a shaft 41 has. A disk 46 with the identification number 45 is held by the plate 42.

As in FIG. 1, the pushbutton body is mounted on the upper part of the side plates 1,1 '. After inserting its shaft 41 into the lower part of the curved locks 47, 47 'in the side plates 1, 1', the pushbutton body is fixed and then fixes the shaft 41 in the bearing part 48, 48 ', consisting of the projections 26, 26' of the thin plates 27, 27 'and the U-shaped groove parts 29, 29'.

At this moment, the lower part 49 of the projection side 40 of the push button rests on the bending part 16 of the movable part 12.

When the movable part 12 in the rest position is pressed by the pushbutton body 39, the comb pressure parts 13, 13 'lower and the comb ends 38, 38' move in the direction of arrow b, and at this moment the hooks 50, 50 'separate of the comb 37 the movable contact springs 51, 52 of 55, 56 of the fixed contact springs 53, 54 and contact with the contact points of the fixed contact springs 57, 58, which are not shown in the drawing. The contact spring group 3 ′ works in the same way as the contact spring group 3 described above.

In this operating position, the slide pin 17 engages in the point P of the guide groove 20 in the slide part 19 by movement in the direction indicated by the arrow c. This keeps the contact spring in the operating position.

When the push button is pressed again and the slide pin 17 disengages, which was engaged at point P , it arrives at the step part 59 by moving in the direction of arrow d and will engage again at the position of point O. As a result, the contact spring will return to the original rest position.

The guide groove 20 is deepest at the position O and becomes shallower when advancing in the direction of arrows c, d and is the shallowest at the position of the step part 59.

The round holes 60, 60 'and 61, 61' are for the attachment of the two-step actuation pushbutton device intended.

As in FIG. 4, the contact spring group 3 consists of the spacer 62, the comb 37, the screw 4, the metal cover plates 63, 64, the immovable contact springs 57, 58 and 53, 54 and a plurality of insulating plates 65.

The spacer 62 has projections 66, 66 'and on both of its front and rear sides Sides several projections 67, 67 ', 68, 68', 69, 69 ', 70, 70', 71, 71 '. The projection 6 engages in the slot 72 of the metal cover plate 63 and the projection 66 'into the slot 73 of the metal cover plate 64.

The comb 37 is formed by the hooks 50, 50 ′, one end part 38 and another end part 74. That End part 38 engages in the slot 75 of the metal plate 64 and the end part 74 in the slot 76 of the metal cover plate 63 a.

The immovable contact springs 57 and 58 have the same construction and are divided in such a way that they have the terminals 77, 78 at the lower end and double contacts at the upper end. As the dashed lines show, the vertical contacts 79, 80 are provided on the back of the upper ends. The immovable contact spring 57 rests elastically with its separate ends on the stops e, e 'of the projections 68, 68' of the spacer 62 Ends at.

The stationary contact springs 53 and 54 are of the same construction and similar to the aforementioned stationary contact springs 57 and 58. The terminals 81 and 82 are provided at the lower ends and the upper ends are divided. The vertical contacts 55, 56 are arranged on the surface of the upper ends of the immovable contact springs 53, 54. The immovable contact spring 53 rests against the stops g, g 'of the projections 69, 69' of the spacer 62 with their separate ends, and the immobile contact spring 54 rests in the same way with their separate ends against the stops h, ti of the projections 71, 7Γ of the same spacer 62.

The movable contact springs 51 and 52 are of the same shape, and the terminals 83, 84 are arranged at the lower end, and the upper part is divided into two tracks. The horizontal contacts 85, 86 are provided on the front and the rear of the ends and have the flag-like parts 87, 88 directed towards the inside. As mentioned above, the vertical contacts are provided for the stationary contact springs and the horizontal contacts are provided for the moving contact springs. Therefore, the point of support is always crossed in an X-shape and the contact is stable. The flag-like parts 87 are held by the stop i of the hook 50 of the comb 37 and the flag-like parts 88 are held by the stop j of the hook 50 'of the comb 37. In the rest position, the movable contacts 85 make elastic contact with the fixed contacts 55 and the movable contacts 86 make elastic contact with the fixed contacts 56. Each immovable contact spring is slightly bent on the separate part in order to gain the necessary elasticity.

After the assembly of the spacer 62, the comb 37, the metal cover plates 63, 64, the Immobile contact springs 57, 58, 53, 54 and the movable contact springs 51, 52 are the insulating plates 65 between the metal cover plates, the movable contact springs and the immobile ones Contact springs distributed and everything on the bending part 2 of the side plate 1 by means of the inserted through Screw 4 fastened through the screw hole. At this moment the comb 37 is open the separate part of each spring, namely in the space on the separate parts.

With such a construction, the comb 37 is moved in the direction of arrow b by lowering the comb pressing part 13 by means of the push button and at this moment the stop i of the hook 50 is pressed onto the flag-like part 87 of the movable contact spring 52 in the direction of arrow b. Therefore, the pair of contacts made up of the movable contact 85 and the fixed contact 79 and the pair of contacts made up of the movable contact 86 and the fixed contact 80 are closed.

The contact spring group 3 'is designed in the same way as the contact spring group 3 described above.

The F i g. 5 shows a front view of a single slide, and FIG. Fig. 6 shows a front view of two sliding members which are connected and Fig. Figure 7 shows a perspective view of two connected push button switches. The sliding part 19 has the guide groove 20 of the described shape with different depths, as described above, and on one side the circular-arc-shaped groove part and on the other side two semicircular-arc-shaped projections 22 are provided. The corresponding number of slide coils 19 can, as shown in FIGS. 6, 7 and 8 can be connected.

The depth of the guide groove 20 of the slide 19 is as shown in FIG. 5, selected as follows: The groove is designed so that the surface C is shallower than the surface and the surface D is deeper than the surface. It is inclined from the surface D to the surface C 2. The groove includes a step from surface C 4 to surface D. As will be described later, A2 includes a hook for engaging the slide pin 17. The slide part 19 receives the force in the direction of arrow P 1 by the tension spring 25 and the slide pin 17 receives the force in the direction of arrow P 3 from compression spring 10.

In the rest position, the force P 2 (same direction as in FIG. 3, A) of the compression spring 91, which in FIG. 2 can be seen to follow the depth of the groove D, C 2, CT), CA sufficiently.

The operation as a two-step operation switch will be explained in detail below.

The slide pin 17 is pushed down because of P 3 by pressing the push button, as in FIG. 1 is shown.

When the sliding frame (1 and O) is pressed down, it slides along the side wall between D and C4, A2, C3 and A3 and moves the sliding pin 17, relative to the plane of the drawing, to the left against the force PI. When the slide pin 17 reaches the tapered part between D and C 2, the slide pin 17 is raised on C 2 against P 2, and when the slide pin 17 is away from the side wall between A 3 and C 2 , the slide pin 17 becomes against the side wall

pressed between A4 and C 2 by the KraftPl and stops.

When the push button is disengaged, the slide pin 17 is stopped. The slide pin 17 stops in the L position by the action of P 3 and PI. At this moment, P 2 also acts because the slide pin 17 is held by the knee part, which is formed from A2 and C 3 , so that the slide does not move. In this case, the comb pressure parts 13, 13 ', shown in Fig. 3, the contact spring groups 3, 3' by pressing the ends 38, 38 ' on the combs 37, 37', which are provided for the contact spring groups 3, 3 ' , kept in operating position.

The actuation of the contact spring and the on-off display is caused by the large difference that arises from the up and down movement of the pushbutton 39. Of course, lamps can also be used for display. By pressing the button again after the release, the slide pin 17 is lowered from the point L and pushed against the lower end wall formed by A 1 and C 4 by the action of P1. Then the disengaged slide pin 17 will slide on the wall given by the area A 1 and C 4 , as a result of the action of P 3. The slide pin 17 then descends over the step between C 4 and D and returns to the Rest position back.

The selective push button arrangement will now be explained.

The following explanations relate to two pushbuttons that are linked. The operation here corresponds to that for more than two pushbuttons connected to one another.

The pins 17, 17 ' are at the point Ml, M 2 in the rest position. When the push button No. 1 is pressed, the slide pin 17 stops at the point L1 by the same process as in the explanation of FIG. 5, and when the slide pin is at the point A halfway to the point Ll, the slide bar 17 'of the No. 2 at point M '.

Then, when the slide pin 17 slides through A , both pins 17 and 17 ' move in parallel and horizontal directions. The pen 17 ' is stopped at step CA, D in FIG. As a result, the pen 17 is stopped at point L1, although PI, P 1 ' act, and not up to point L in FIG. 5 pushed.

When the No. 2 key is pressed to release the No. 1 key, the slide bar 17 ' descends, and when the point P is reached, the slide pin 17 of No. 1 reaches the point. Then the slide pin 17 falls from the surface C 3 onto the surface D by the pressure of P 3 and moves up to point B, and when the slide pin 17 'has reached the point A' , the slide pin 17 moves from point B to the Point M. Then the slide pin 17 'is held at point L 2 , and at this moment the slide pin 17 returns to point Ml and comes to the rest position. If key no.1 is now pressed in the same way, the same process takes place for key no.2.

The explanation is given for the case that the distance between the sliding pin 17, 17 ' and the distance between the sliding part 19, 19' coincide. However, the sliding piece according to the invention can take on the dimensions of X, Y and Z of significantly different sizes.

The latter means that the switch can work satisfactorily even if a considerable

There is a difference due to mounting distances or manufacturing tolerances. With the usual switch type, which is very difficult in the realization of this function, it was mostly impossible to make an optional Number of units to connect even after all possible measurements have been taken. Accordingly, it was a common requirement that there was always a certain number of keys in one individual frames were combined.

On the other hand, the switch according to the invention makes it possible that no defective operation occurs even if more than 50 units are connected in series, with the usual overall tolerance, although there are differences due to mounting dimensions or accuracy. Even if the slider 19, 19 ' from the status of FIG. 7 is moved, the switch can be used as a toggle button assembly. As such, it can be used for many applications where the function as a push button arrangement is sufficient.

Further, in the case of small-scale manufacture of many types, the molding cost or other facility cost is low compared with conventional units, which are summarized in a frame, and it is advantageous to reduce manufacturing costs degrade few types in the case of mass production.

The in FIG. The sliding part shown in FIG. 8 is essentially the same as that in FIG. 6 shown.

The difference is that there is a distance r between the starting position M of the slide pin in the locked position (this position is shown in the figure) of the slide pin 17 ' . Accordingly, when the key no. 2 is depressed again in the position that the key no. 2 is in the position Ll as in the above-described example of FIG. 6 engages, the slide is moved along C 3, C 4 because the distance r is present, and returns via C 4 when the hand is removed from the push button. In the same way, the latched pushbutton is retained in the locked position Ll, even if a button other than no. 2 is depressed. Furthermore, if selective pushbuttons that do not spring back even if the latched button is depressed again, as in the example of FIG. 6, this is made possible by the groove parts 89, 89 ' on the side of the slide 19, 19' and by the attachment of the end of the lock 90 which is provided on the frame of said groove part. As namely F i g. 8 shows the lock 90 is at the left end of the groove portion 89 ' and prevents movement of the slide to the right. The lock 90 can similarly be provided on any of a variety of sliders.

In the push button in which the lock 90 is provided as above, the slider does not move to the right because the lock 90, even if button No. 2 is locked in the lock position L 1, as shown in FIG. 8 can be seen is present. Therefore, the slide pin cannot return. If a push button other than button # 2, e.g. 1, is depressed, the slide 19, 19 'is moved to the right, and the slide pin in the above-described locking position will return by R. Accordingly, the same function as that of the push button shown in FIG. 6 can be provided.

Claims (4)

In FIG. 6, the equivalent part, as in the above-described lock 90, is formed by the slide pin 17, 17 'and the groove side wall. For example, when the slide pin 17 of the No. 1 key is locked in the locking position L1, even if the key is depressed again, the slide 17 'is prevented from moving to the right because the slide pin 17' of the No. 2 key is in the groove side wall , and accordingly push button # 1 does not return. Patent claims: 1. Push button switch, in which a slider with a locking positions effecting groove guide is provided for two-step actuation, in which a slide pin actuated by the pushbutton engages and when actuated moves the slider laterally into the latching positions or out of these, characterized in that approximately perpendicular for the one-armed lever formed by the pushbutton (41, 42, 39) , a part (12) movable in this direction is provided, which is pressed laterally against the pushbutton (41, 42, 39) by means of spring force and which pushes the slide pin (17) carries, which protrudes perpendicular to the direction of displacement of this movable part (12) from this, and that the slider (19), which is displaceable transversely to the pivot plane of the pushbutton (41, 42, 39 ), is exclusively displaceable, is mounted in front of the movable part (12) in this way that the slide pin (17) engages in the groove guide of the slide (19) . 2. Push button switch according to claim 1, characterized in that in the slider (19) the groove guide forming a closed curve train with regard to its base surface intended for the abutment of the end face of the slider (17) is staggered in depth such that in a first groove section (D) a, relative to the direction of displacement of the slide (19) inclined wedge surface is created as a lateral guide for the slide pin (17) , which with regard to the immersion depth of the slide pin (17) is deepest and at the end of the wedge surface merges into a second groove section (C) which is less deep for the slide pin (17) and which has a stop to limit the movement of the slide piece (19) and a latch (P ) merges into the starting area (O) of the first groove section leading back third groove section, which joins abruptly (59) into the first groove section, and that in the middle part of the wedge surface another abrupt transition from the second groove section (C) to the first groove section (D ) is provided, and also the width in the first groove section (D) widens in the displacement path of the slide (19) so that a free displacement path of the slide pin (17) is given by the length of the driving path through neighboring slide pieces (F i g. 3, 5 , 6, 8). 3. Push button switch according to claim 1 or 2, characterized in that a plurality of push button switches are provided in which the sliders (19) of the switches are connected in series along their direction of displacement via connecting elements formed in particular as semicircular arcuate grooves (21) and semicircular arcuate projections (22) that in the groove guide of the slider (19) a locking point (P) is provided in such a way that, in conjunction with the sliding pin (17), the pushbutton (41, 42, 39) engages when pressed for the first time, releasing all other switches for disengaging and is also released for disengagement with a second press. 4. Push button switch according to claim 3, characterized in that a groove part (89) is provided in the slider (19) , which in connection with a lock (90) restricts the displaceability of the slider (19) such that a switch can only be disengaged another switch engages. Considered publications:
German interpretative document No. 1133 006. In addition 3 sheets of drawings 709 579/335 5.67 Q Bundesdruckerei Berlin