DE1703493U - PUSH BUTTON SWITCH FOR BROAD RADIOS AND THE LIKE - Google Patents

Description

Button levers are locked in the printed position, they give way but return to the starting position when additional pressure is applied to any key.

The innovation has set itself the task of improving push button switches of the latter type. She goes from the Recognition from the fact that the overstroke opens up the possibility of switching connections created, which may lead to errors in the device; because there are the contact feathers of the individual contact groups lie relatively close to one another, on the other hand the overstroke is only slightly smaller than that required for switching Movement, it cannot be avoided with certainty that when the contact knife is displaced in relation to the contact springs Connection between the last contact spring of a group with the first contact spring of the following group comes.

In order to avoid these difficulties, it is proposed according to the innovation to bridge the Eontakt and Eontakt knives of an Eontakt group on their girders by the width of the girders opposite the contact bridges and contact knives of the following contact group to be offset, i.e. to be attached to different sides of the carrier. This ensures that the contact bridges run astray in the event of an overstroke, i.e. not a strange contact group can touch.

An embodiment of the innovation and further details the same are explained in more detail below with reference to the figure, which shows the new switch in section, so only a single key can be recognized, but not the other keys in front of and behind the cutting plane.

In the figure, 1 is the right side wall of the switch frame denotes, with 2 and 3, the profile strips connecting the side walls, in which the Eontaktträger 4 with the Eontakt knives 5 are used. The contact knives of the marked contact carrier are divided into 4 groups I - IV of 3 knives each, which 4 resilient Eontaktbrücken 7 are assigned, each 2 consecutive Allow contact knife to be bridged. to

Sheet -3-

Key levers are locked in the pressed position, but they move back into the starting position when on any Button an additional pressure is exerted.

The innovation has set itself the task of improving push button switches of the latter type. She goes from the Recognition from that the overstroke creates the possibility for switching connections, which u.ü. lead to errors in the device can; because since the contact springs of the individual contact groups are relatively close to one another, on the other hand the Overtravel is only a little smaller than the movement required for switching, it cannot be avoided with certainty that in the Displacement of the contact blade with respect to the contact springs with a connection between the last contact spring of a group the first contact spring of the following contact group comes about.

In order to avoid these difficulties, it is proposed according to the innovation, the contact bridges and contact blades of a contact group on their carriers by the width of the carrier opposite the contact bridges and contact blades of the following contact group to be offset, i.e. to be attached to different sides of the carrier. This ensures that the contact bridges pushing into the open in the event of an overstroke, i.e. not being able to touch an unfamiliar contact group.

An exemplary embodiment of the innovation and further details thereof will be described in greater detail below with reference to the figure explained, which shows the new switch in section, so only a single button can be recognized, but not the one in front of and behind the cutting plane lying further hasten.

In the figure, 1 is the right side wall of the switch frame denotes, with 2 and 5, the profile strips connecting the side walls, in which the contact carrier 4- with the contact blades 5 are used. The contact blades of the drawn contact carrier are divided into 4 groups I - IV of 5 knives each, which 4 resilient contact bridges 7 are assigned, each 2 consecutive Allow contact blades to be bridged. to

Sheet -3-

For this purpose, the contact bridges are attached to supports 8, which are set up pivotable here and by pressing a button ux can be adjusted by one switching step. The porters 8 sine, provided with pin 9, on which the buttons 10 ask Attack the pivot lever 11 with a fork 12. The swing levers themselves are mounted on a continuous axis 13 and limited in their ^ stroke by cutouts 14 of the bar 15.

A locking bar 16 is used to lock the buttons in the pressed position and to release the buttons from one another provided, which can be pivoted in the side walls of the switch frame, is stored. This locking bar works with a cam 17 of the pivot lever 11 together. When the button 10 is pressed, the button lever is locked in the printed position and the contact carrier 7 with the contact bridges 11 is pivoted out of the position shown in the direction of the arrow.

In order to prevent that all buttons are pressed simultaneously and can get into the locked position, is on the Lever 11 attached another cam 18, which the rail 16 allowed to lift out of the locked position by an additional pressure on the button 10. Necessarily, this has one Shifting the Eontakt bridges in relation to the / Zontakt knives result. There is therefore the possibility that a connection between the last contact blade of a group and the first Contact knife of the following contact group comes about. In the sense of the innovation, the contact bridges and contact knives are therefore a group on their carriers by the width of the carrier opposite the contact bridges and contact blades of the following G group moved. So there are the contact bridges with other νϊorts and contact knives of groups I and III on the left, those of groups II and IV on the right Cutting plane. As a result, the contact bridges bump into one Overtravel into the open, so cannot touch the knives of a foreign contact group.

The scope of the hiring is not on push button switches limited with swiveling Eontaktträgern. It is also irrelevant which contacts are designed to be resilient.