DE4016222C2 - - Google Patents

Description

The invention relates to a switching disc Timer with a variety of slide switches, each slide valve has an actuating nose for manual shift and a shift finger for Loading a switching element, being in the displacement of the slide switch from the Rest position in the switch position with a latch a slope is provided.

Such a switching disk of a timer is in described in DE 33 21 539 A1. The switch disc will driven by a clockwork. Corresponding to that in their Switch position brought slider that will Switching element controlled time-dependent.

In DE 33 21 539 A1 there is a switch on each slide Locking hump formed over which the spring tongue when Moving the slide switch snaps. In order to it is ensured that the slide switch also under Load from the switching element in its switching position remains, the rest must be correspondingly strong. This has the consequence, however, that the manual Moving accordingly is difficult. Is unfavorable also that the spring tongue through the strong click is significantly burdened. This is especially the case with higher ones Operating temperatures undesirable.  

From DE-PS 30 19 325 is also an electrical timer a program disc became known in which the Schaltreiter are radially adjustable. The switch rider is at rest the radially inner position. The shift tab is in the displacement a detent with two different steep flanks is provided. In the front part of the rigidly movable shift tab is one Nose provided with a scanning tip, which over the latch slides away. In the outer position of the switching rider, the switching position, this nose lies on the steep flank of the latch a correspondingly adjusted slope. This slope is so ge selects the scanning pressure of the switch of the timer, which attacks the switch rider from the outside, not over the switch rider can move the steep flank of the latch. Should the switching rider must be moved to its rest position by hand, so an ent speaking force to be applied to the frictional resistance to overcome the steep flank of the latch. However, the Switching riders are moved from the rest position to the switching position, so the spring of the rider slides over with its scanning tip the less steep flank of the latch, so that this movement direction only a small force has to be applied.

In the arrangement described above, actuation lines run device of the switch rider and contact pressure of the switch in the same direction tion, and therefore the shift tab must be moved manually  a great deal of force will be expended in this direction. Further are reduced with the spring on the scanning tip with frequent use fear of signs of damage.

In contrast, the invention has for its object a switching disc to propose the type mentioned at the same time, while at the same time having good mechanical stability an easy operation of the slide switch is given without blocking the slide switch is impaired in the switch position.

According to the invention, the above object is due to the characteristic features of claim 1 solved. The invention differs from the prior art in that the directions of action of the pressure pressure of the switch and manual operation different are, so that a high contact pressure of the switch on the shift finger is possible while the operating force in the displacement of the Shift fingers in the radial direction both inwards and outwards outside is approximately the same and small. This is done by a latch with a flank on one side and one essentially vertical stop surface on the other side. In the the shift finger slides in one direction with slight swinging over this flank, in the other direction of displacement the Shift finger first tilted slightly and then moved. In both cases there is the pivoting movement of the shift finger only a slight counterforce.

Advantageous refinements of the invention result from the subclaims and the following description of an embodiment. In the drawing shows

Fig. 1 is a switching disc a timer in longitudinal section;

Fig. 2 is a partial view of the switching disc relative to FIG. 1, enlarged with a slide switch in the rest position,

Fig. 3 is a view corresponding to Fig. 2, wherein the slide switch is in an intermediate position and

Fig. 4 is a view corresponding to Fig. 2, with the slide switch in the switch position.

A switching disc ( 1 ) has a central socket ( 2 ) with which it can be plugged onto a shaft of a clockwork. The switching disc ( 1 ) is provided on its circumference within a ring edge ( 3 ) with a plurality of pockets ( 4 ). A slide switch ( 5 ) is inserted in each pocket ( 4 ). For example, with a timer that provides four switching options per hour within 24 hours, 96 switch slides ( 5 ) are arranged.

The slide switch ( 5 ) can be moved radially to the axis of rotation (D) of the switch disc ( 1 ). For this purpose, each pocket ( 4 ) forms support shoulders ( 6 ) on which shoulders ( 8 ) formed on both sides of a guide part ( 7 ) of the slide switch ( 5 ) rest.

At the outer end of the guide part ( 7 ) of the slide switch ( 5 ), an actuating nose ( 9 ) is formed, which protrudes beyond the switching disc ( 1 ). A shift finger ( 10 ) is formed at the outer end of the guide part ( 7 ) opposite the actuating nose ( 9 ). The slide switch ( 5 ) can be moved manually on the actuating nose ( 9 ). A switching element ( 12 ) of an electrical switch, not shown, engages in an annular space ( 11 ) of the switching disc ( 1 ) and can be acted upon by the switching finger (s) ( 10 ). The switching element ( 12 ) does not run around with the switching disc ( 1 ).

A spring washer ( 13 ) is firmly connected to the switching disc ( 1 ). On its outer circumference, this has a spring tongue ( 14 ) for each slide switch ( 5 ). The spring tongue ( 14 ) stands as close as possible to the actuating lug ( 9 ) on the guide part ( 7 ) of the slide switch ( 5 ), leaving the necessary radial switching stroke (H) for the actuating lug ( 9 ) free in the rest position.

A detent ( 15 ) is formed on the switching disc ( 1 ) at the base of each pocket ( 4 ). This forms a bevel ( 16 ) radially on the outside and a stop surface ( 17 ) radially on the inside, the stop surface ( 17 ) being essentially perpendicular to the radial displacement direction of the slide switch ( 5 ).

The guide part ( 7 ) of the slide switch ( 5 ) is provided at its end facing away from the actuating lug ( 9 ) and the switching finger ( 10 ) with a counter lug ( 18 ) which has a slope ( 19 ) corresponding to the slope ( 16 ) and one of the stop surface ( 17 ) forms the corresponding stop surface ( 20 ).

The spring washer ( 13 ) forms a guide surface ( 21 ) for an upper edge ( 22 ) of the guide part ( 7 ) of the slide switch ( 5 ) above the latching lug ( 15 ).

Starting from the rest position shown in FIG. 2, the functioning of the described device is essentially as follows:

In the rest position (cf. FIG. 2), the spring tongue ( 14 ) presses on the guide part ( 7 ), so that its shoulders ( 8 ) lie on the support shoulders ( 6 ) of the pockets ( 4 ). The slope (19) of the counter-lug (18) is located on the slope (16) of the catch nose (15) of the switching disc (1) without that the slope (19) can slide along the slope (16) in case of impacts or shocks. The shift finger ( 10 ) is withdrawn in the pocket ( 4 ) so that it cannot actuate the shift member ( 12 ) when it passes.

If the actuating nose ( 9 ) is then pressed manually in the direction of the arrow (E), the slope ( 19 ) moves up the slope ( 16 ). The slide switch ( 5 ) pivots about the tipping point (K), whereby the shoulders ( 8 ) detach from the support shoulders ( 6 ). The upper edge ( 22 ) of the guide part ( 7 ) meets the guide surface ( 21 ) (cf. FIG. 3). There is a certain clamping there. At the end of this sliding movement, the stop surface ( 20 ) of the counter nose ( 18 ) of the guide part ( 7 ) snaps behind the stop surface ( 17 ) of the latch ( 15 ) of the switching disc ( 1 ). The slide switch ( 5 ) is now held positively in its switching position (cf. FIG. 4). The slide switch ( 5 ) does not come out of this switch position due to vibrations or impacts. The shift finger ( 10 ) protrudes into the annular space ( 11 ) so that it hits the switching element ( 12 ) and switches it when it is moved past it. The switching element ( 12 ) striking the switching finger ( 10 ) exerts a radially outward force thereon in the direction of the arrow (F). This force acts so that the shoulders ( 8 ) are pressed onto the support shoulders ( 6 ) so that there is no tendency for the stop surfaces ( 17 , 20 ) to separate from one another.

If the slide switch ( 5 ) is then to be brought from its switching position (cf. FIG. 4) to its rest position (cf. FIG. 2), the actuating nose ( 9 ) is actuated manually in the direction of the arrow (G). This results in a leverage effect around the tipping point (L) (see FIG. 4), which lies on the line of the support shoulders ( 6 ) and shoulders ( 8 ), but which does not have to coincide exactly with the tipping point (K). By tilting the slide switch ( 5 ) around the tipping point (L), the stop surface ( 20 ) moves relative to the stop surface ( 17 ), so that the counter-nose ( 18 ) is free of the latching nose ( 15 ) and extends radially outward therefrom can be pushed. The slide switch ( 5 ) then returns to its rest position (see FIG. 2).

In another embodiment of the invention, it may also be sufficient that a slope is provided either only on the slide switch ( 5 ) or on the latching lug ( 15 ). It is also possible for the bevels ( 16 or 19 ) and the stop surfaces ( 17 or 20 ) not in each case on a locking lug ( 15 ) or a counter lug ( 18 ), but at other points on the switching disc ( 1 ) or the Form slide switch ( 5 ).

Claims (5)

1. Slide a timer with a plurality of switching slides, each slider has an operating lug for manual displacement and a shift finger to act on a switching element on the slider, in the shifting movement of the slider from the rest position into the switching position a latch provided with a bevel is characterized by
that the slide switch ( 5 ) has in a known manner one of the bevels ( 16 ) of the locking lug ( 15 ) adapted counter nose ( 18 ), which is, however, rigidly connected to the slide switch ( 5 ),
that furthermore the latching lug ( 15 ) has on its rear side a stop surface ( 17 ) which is substantially perpendicular to the radial displacement direction of the slide switch and
that also the counter-lug (18) has a hook-shaped formation with a likewise substantially vertical stop surface (20), so that the switching can slide interlock with this surface (20) in the switching position against the stop surface (17) of the latching nose, and
that finally a known spring force ( 14 ) acts on the slide switch ( 5 ) perpendicular to its direction of displacement, but in such a way that the slide switch can tip over the locking lug when moved. 2. Switch disc according to claim 1, characterized in that the bevel ( 19 ) on the slide switch ( 5 ) is formed at its radially in the other end and that the switching position of the slide switch is in its radially inner position. 3. Switch disc according to claim 1 or 2, characterized in that the switching element ( 12 ) scans the shift finger ( 10 ) radially from the inside. 4. Switch disc according to one of the preceding claims, characterized in that the slide switch ( 5 ) with shoulders ( 8 ) on support shoulders ( 6 ) of the switch disc ( 1 ) is displaceably mounted and that tilting points (K, L) when moving the slide switch ( 5 ) on the line of the shoulders ( 8 ) and the support shoulders ( 6 ) in the area of the actuating nose ( 9 ). 5. Switching disc according to one of the preceding claims, characterized in that the spring tongue ( 14 ) near the actuating lug ( 9 ) and away from the bevel ( 16 , 19 ) and the latching lug ( 15 ) on the switching slide presses ( 5 ).