JP2000182480A - Command device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structurally small command device of which the depth of assembly and mounting can be made relatively small. SOLUTION: This command device 1 having an actuator 30 has at least two first plunger elements 31, 32 and a switch device. The switch device includes at least two spatially isolated and electrically insulated contactors, each contactor being movable by means of the first plunger elements 31, 32 and additionally has second plunger elements interposed. The second plunger elements form one pressure piece 9 each where they are fixed and connected together.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a command device having an actuator having at least two first plunger elements and a switching device. The switching device comprises at least two spatially separated and electrically insulated contactors. Each contactor is movable by an assigned first plunger element and an additionally interposed second plunger element.

[0002]

2. Description of the Related Art Command devices of this kind are already known.
These devices can accommodate a large number of push buttons or buttons in a small space. It is also often used in methods where the function is such that one operation causes an independent process to dominate, such as two different electrical circuits.

There is a need for a plunger element that interacts with the actuator, a first plunger element, a second plunger element therebetween, and a contactor. Here, since the axis of the contactor is usually provided outside the first plunger element, the contactor cannot be moved by the first plunger element, or especially if the actuator and the switching device are to be removable. It can only be moved.

[0004]

However, such a commanding device has disadvantages, and requires a relatively large structure, especially for guiding the second plunger element. In addition, the guidance of the second plunger element requires a certain structural depth of the actuator in order to actually obtain a suitable guidance action. However, for the ever decreasing size of systems and switching devices, large assembly depths are undesirable.

It is an object of the present invention to improve a commanding device of the type mentioned in the introduction, to make it structurally smaller, and to make the depth for assembly and installation relatively smaller. Is to be able to do it.

[0006]

This object is achieved according to the invention by the fixed connection of the respective second plunger elements to one another. In this case, the advantage is taken that it is entirely sufficient to tilt the fixedly connected second plunger element forming one pressing piece in order to move the spatially isolated contactors (contact portions) separately. This means that it is no longer necessary to independently guide the complexly configured second plunger element. In extreme cases, the fixedly connected plunger element can be configured in the form of a plate, which makes it easy to reduce the structural height of the command device.

It is particularly desirable for the contactor to have a relatively short contact stroke. This dimension means that a slight inclination of the fixedly connected second plunger element is already sufficient to cause a switching stroke. Furthermore, the fixedly connected plunger element can be accommodated with little play, for example in the housing of the switching device, which allows simple but accurate guidance. This contributes to a reliable and accurate contactor switching action.

[0008] In a particularly preferred embodiment, two first plunger elements and two contactors are provided. It is particularly advantageous if the invention evolves and at least one, and preferably all, of the contactors comprise a snap-action disc. Since the snap action disc has a particularly small contact stroke, the structural height of the command device is reduced. In this regard, it is advantageous if each contactor has a switching contact. Thus, in the case of a key operated switch, it is possible to open the make contact and close the break contact in each case, for example by turning the key, in order to trigger the desired process in the two electrical circuits.

In order to make it clear to the operator that the switch has been made, especially when the contactor has a short contact stroke, it is fixedly connected to at least one contactor in a manner corresponding to the contactor having a larger switch stroke. It can furthermore be provided to provide an elastic element such as a compression spring between the plunger element and the plunger element.

[0010]

1 to 3 show a switching device 1 for a command device according to the present invention. The switching device 1 has a two-part housing 2 with a bottom 4 having connection contacts 3 and a base 6 provided with a tubular sleeve 5. The base 6 and the bottom 4 are engaged with each other.

At the bottom 4 of the housing 2, the two snap action discs 7, 8 are
Actuated by the second otherwise guided separately
Requires a plunger element. The tubular sleeve 5 is shown in FIG.
As shown in FIG. The oblong pressing piece 9 has an arcuate shape and is provided concentrically with respect to the longitudinal axis of the switching device.
One. The pressure webs 10, 11 interact with the first plunger elements 31, 32 of the actuator 30. For example, the pressure web 1 via the first plunger element 31
As a result of the application of pressure to 1, the pressing piece 9 of FIG. 1 tilts to the right, thereby affecting the switching process of the snap action disc 7,
Has no effect.

In this way, the plunger element can be moved separately along the longitudinal axis 33 of the actuator 30 and the switching device 1. On the other hand, the actuator 30
When sufficient pressure is applied to the pressure web 10 by the first plunger element 32 of FIG. 1, the pressing piece 9 of FIG. 1 tilts to the left and the switching takes place via the snap action disc 8, in which case the switching of the snap action disc 7 takes place. Has no effect.

In order to make the switching process more perceptible to the operator, a compression spring 12 is provided between the pressing piece 9 and each snap action disc 7. In this way, it is desirable that the associated snap-action disc is not pushed down to the minimum extent via the one-sided pressure piece 9, but rather switched only after some relatively large actuation stroke. For this purpose, a compression spring 12 for defining the operation stroke is provided. Only after a predetermined working stroke has been achieved, the snap action discs 7, 8 move. As a result, even in the case of a contactor with a very small contact stroke, for example a snap action switch, the operator can clearly recognize the switching process.

The compression springs 12 are housed in corresponding recesses 13 of the pressing piece 9 and each peg 14 is arranged at the bottom of the recess for further fixing. The pressing piece 9 is opposed to the lug 1
The pressing pieces 9 are inclined at an angle, guided by the guide grooves 5, 16 and being somewhat larger than the guide grooves 17, 18.

The lamp holder 19 is disposed around the longitudinal axis 33 of the switching device 1. By way of example, there are lamp contacts 20 at two opposite places, which are held in the housing 2 by latching lugs 21. (See FIG. 3) The pressure webs 10, 11 partially surround this lamp holder 19, as can be seen more clearly in FIGS.

Further, the actuator 30 has a tubular sleeve 34 like the switching device 1.
Can be pushed onto the tubular sleeve 5 of the switching device 1 and engage the tubular sleeve 5 by latching means, not illustrated. First plunger element 31, 32
By rotating the rotation knob 35 shown as an example to the left or right around the neutral position,
It can move along the tubular sleeve 34. Thereby, the snap action discs 7 or 8 can be moved alternately in the direction of the pressure webs 11 or 10.

FIG. 5 shows first plunger elements 31, 32.
Is shown from below. In this example, the plunger elements consist of halves of a tubular body that can move away from each other. According to the present invention, since the two plunger elements constitute one fixed pressing piece 9, the structure of the switching device 1 can be considerably simplified, and the height of the structure of the switching device 1 can be reduced. Furthermore, the switching device is generally reliable, since the individual plunger elements do not tilt or become stuck due to improper guidance.

[Brief description of the drawings]

1 is a cross-sectional view of a switching device having two housing parts for a command device according to the present invention, taken along section line II of FIG. 2;

FIG. 2 is an open plan view of the switching device in FIG. 1 without an upper housing part.

FIG. 3 is a sectional view of the switching device taken along section line II-II of FIG. 1;

FIG. 4 is a partial cross-sectional side view of the switching device according to FIG. 1 in which the actuator is arranged.

FIG. 5 shows the actuator according to FIG. 4 as viewed from below.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Switching device 2 ... Housing 3 ... Connection contact 4 ... Bottom 5 ... Tubular sleeve 6 ... Base 7 ... Snap action disc 8 ... Snap action disc 9 ... Pressing piece 10, 11 ... Pressure web 12 ... Compression spring 13 ... Recess 14 ... Pegs 15, 16 Lugs 17, 18 Guide grooves 19 Lamp holders 20 Lamp contacts 21 Latching lugs for lamp holders 30 Actuators 31, 32 First plunger element 33 Longitudinal axis 34 Tubular sleeve 35 Rotary knob

Claims (7)

[Claims] 1. A commanding device having an actuator, comprising at least two first plunger elements and a switching device, said switching device having at least two spatially separated and electrically insulated contactors. Each said contactor can be moved by an assigned first plunger element and an additionally interposed second plunger element, said second plunger elements forming one pressing piece fixedly connected to one another. Command device. 2. The command device according to claim 1, wherein the contactor has a relatively short contact stroke. 3. The method according to claim 1, wherein two first plunger elements and two contactors are provided.
Or the command device according to 2. 4. The command device according to claim 1, wherein the at least one contactor constitutes a snap action disk. 5. The command device according to claim 3, wherein one contactor is a break contact, and the other contactor is a make contact. 6. The command device according to claim 3, wherein each contactor has a switching contact. 7. The command device according to claim 1, wherein an elastic element is provided between at least one contactor and the pressing piece.