ES2203149T3 - ELASTIC DISC SWITCH SWITCH. - Google Patents

Abstract

The invention relates to a sensitive switch (1) comprising a molding (2) placed at the highest point of a pumped part. A separate contact element (3) is placed in said molding (2).

Description

Elastic insert disc switch.

The invention relates to a disk switch of elastic insert according to the preamble of claim 1 with an arcuate elastic insert disc that, in a groove arranged at the highest point of convexity, shows a switching contact that is configured as an element of separate contact, which is fixed to the groove.

Switches for a long time have been known elastic insert disc of this type in the state of the art, which are used regularly in the field of keyboards. The contact Switching of elastic insert disc switches known is usually a spherical convexity, which extends inward in the radial direction of the insert disc elastic. Spherical convexity is created by means of the disk elastic snap fits into a tool for pressing formed of appropriate form.

While manufacturing a disk switch of elastic fit of this type is relatively simple and by this economic, can only be applied where powers are switched very small This is because the material of which it is composed The elastic insert disc is not suitable for switching older powers For this reason the field of application of known elastic snap disk switches are very limited.

Of the document GB-A-1 195 702 a known elastic insert disc switch that shows, in a groove arranged at the highest point of convexity, a switching contact configured as contact element apart. The aforementioned leaflet does not contain indications of switching contact setting.

The document is also known US-A-4,438,304 a switch elastic insert disc, in which below and above the Convexity of the elastic insert disc a countercontact By means of this the switch of elastic insert disc have the function of a switch alternative. The switching contact arranged at the most point elevated convexity is riveted on the insert disc elastic. In the region of the rivet the elastic insert disc It is equally arched.

The mission of the invention is to configure in such a manner an elastic insert disc switch mentioned to the Start, which can be manufactured simply and have a long useful life.

The solution of this mission is obtained from the particularities of the characteristic part of claim 1. From subclaims claims are perfected advantageous of the invention.

According to the invention the contact of switching has been configured as a separate contact element, which It is fixed to the groove. Through separate configuration, no integral with the elastic insert disc of the contact element it is advantageously possible to manufacture the contact element with a different material than the elastic insert disc. The material of the elastic insert disc can be chosen in this way with relationship to the elastic action or elastic insert of the disc elastic insert, while the material of the switching contact can be chosen in relation to a optimal switching behavior.

It is especially advantageous that the contact of Switching is riveted on the elastic insert disc. Is fixation has proven to be very advantageous in relation to life Useful.

It has proved especially advantageous that the groove is configured as a flat surface. Through this creates a neutral zone for the fixed switching contact mechanically. By configuring the groove as flat surface there is an interruption of tension to the flexion of the elastic insert disc. The contact fixation of switching is therefore free from material movements of the elastic insert disc, whereby the fixation has Long service life.

In another form of special execution of the invention the groove extends outward in the radial direction of the elastic insert disc. This has for a side a positive effect on the elastic action of the disk of elastic insert. On the other hand by means of this it is achieved that the switching path of the insert disc is not reduced elastic because of the placement on top of the element Contact.

Other particularities are deduced from this invention of the following description of an exemplary embodiment special, referring to the drawing.

Here show

Figure 1 an elastic insert disc configured according to the invention with a contact element riveted on top, in plan view,

Figure 2 the elastic insert disc of the Figure 1 in side view, in section,

Figure 3 an elastic insert disc set up in the usual way and

Figure 4 the elastic insert disc represented in figure 3 in side view, in section.

As can be deduced from Figures 1 and 2, a 1 elastic arcuate insert disc shows at the most point raised from its convexity a groove 2. The groove 2 is configured as a flat surface, which has been manufactured using cold deformation The groove 2 is delimited in this way by an edge, which is curved with outwardly sharp edges of the elastic insert disc. However, the edge could also Be configured as a stretch mark.

The groove 2 extends outwards in the radial direction of the elastic insert disc 1. The groove 2 shows a separate contact element 3, which extends towards the inside in the radial direction of the elastic insert disc 1. The contact element 3 is riveted in an opening in the groove 2. The contact element 3 is composed of materials of silver or multilayer materials, while the elastic insert disc 1 is composed of an elastic material, such as stainless steel, beryllium copper or elastic bronze.

Although elastic insert disc 1 has also partially a half-shell shaped path because of its convexity, however it is configured almost in the form of star. Through this, four seat points 4 are obtained, by means of which the elastic insert disc 1 can set to a switching element.

For the description to be complete it must be cited also that the elastic insert disc 1 is fixed in such a way to an elastic insert which, in the mounted state of the disc of elastic insert 1, in front of the contact element 3 has arranged another contact element configured in a way Similary.

Unlike the elastic insert disc represented in figures 1 and 2, the elastic insert disc 1 '' usual represented in figures 3 and 4 does not show any element of separate contact. The switching contact is represented by a 2 '' spherical groove, which extends inwards in the radial direction of the elastic insert disc 1 ''. Through This is not possible to switch large powers.

Claims (3)

1. Elastic insert disc switch with an arcuate elastic insert disc (1 ', 1'') arched which, in a groove (2', 2 '') arranged at the highest point of convexity, shows a contact of switching (3 ') that is configured as a separate contact element, which is fixed to the groove (2''), characterized in that the groove (2') shows an opening in which the contact element (3 'has been riveted ). 2. Elastic insert disc switch according to claim 1, characterized in that the groove (2 ') is configured as a flat surface. 3. Elastic insert disc switch according to claim 1 or 2, characterized in that the groove (2 ') extends outward in the radial direction of the elastic insert disc (1').