SU989602A1 - Push-button switch - Google Patents

Description

(FOR) BUTTON SWITCH

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The invention relates to electrical engineering and can be used to manually turn on, switch and disconnect electrical circuits with low voltages and currents.

Pushbutton switches are known to contain an electrically insulating base, a button, one end of which senses force, and the other end transmits this force, a housing which is attached to the base with contact details, and a button entering it moving with respect to the contact parts, as well as an electrically conductive shunt element that closes the contact parts depending on the movement of the LI button 1.

However, when the button is moved, one function is performed - a short-circuit, which limits the possibility of using the button switch in logic control circuits,

Known1 "|| pushbutton switches that contain the support base with the fixed contacts and the insulator: ::: m apart from each other, which are structurally located inside the housing. The case has a button with a contact element, which, when the KOHTaKWpyeTr button is moved with a fixed contact, is a SHZ.

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This design has the disadvantage that when the button is moved, only one function is performed - to close the contacts, which limits the possibilities of using

fs pushbutton switch in logic control circuits.

The closest in technical essence to the claimed is a push button switch, which

20 contains krrpus with telescopic; an inserted button. The button has structurally installed cylindrical lines from insulating material. The button moves freely inside the housing in the axial direction. In the housing there are grooves in which the contact springs are fixed, while the surfaces of the electrically connected contact springs are located opposite each other. When the button is pressed, these springs are connected 3. The disadvantage of this device is its limited functionality, because such a device can work only to break an electrical circuit. The purpose of the invention is to expand the functionality of a push button switch. The goal is achieved by the fact that in the device containing the support base, the housing, the movable contact element and the contact springs in the housing, different-sized grooves are made, each of which with the possibility of free movement in one of the ends of the contact springs, the other ends of which installed in one row on the support base, and the free running of the contact springs exceeds the maximum depth of the groove. The drawing shows the proposed push button switch. The push-button switch contains button 1. Under the button 1, an LED 2 can be mounted, if necessary. The button is telescopically mounted in the housing 3. The housing has slots. Contact springs 5 are preliminarily mounted on the supporting base of SRI 6. Button 1 is fixed on the housing 3 by means of a movable contact element 7. Contact element 7 passes through a slot in the housing 3 holes in the button 1 and exits through another slot in the housing 3. When installing assembled buttons 1 and case 3 contact springs 5 enter grooves 8, while the free ends of contact springs 5 abut against the end walls of grooves 8. Assembled buttons and case are mounted on support 6 with mounting holes 9 and directions guides 10. The guides 10 are reflowed on the other side of the support base 6, the housing 3 is rigidly fixed. In the finally assembled switch, the movable contact element 1 freely touches the middle contact spring 5-. The device works as follows. When a force is applied, perpendicular to the plane of the button 1, the latter begins to move downwards. Since the movable contact element 7 is connected with the button 2, it also moves downwards and at the same time begins to move in the same direction one of the contact lines 5 i in this case average), which is included in the longest of the slots 8. Move together with a contact spring, the movable contact element 7 reaches the second contact spring, which enters: a shorter groove (in this case left) and closes it with an average contact spring. Moving along with two closed contact springs, the movable contact element 7 reaches the third contact spring and closes it with these two springs. In this position, all three contact springs 5 are closed by means of a movable contact element 7. When forces are removed, button 1 together with movable contact element 4ent 7 rises up and opens contact 5 in reverse order. The upward movement of the button 1 is due to the fact that the length of the grooves 8. Is selected less than the free running of the contact springs 5. This design allows the springs to be inserted when the housing 3 is set to on. the support base 6, which causes the force that pushes the button 1 upwards. The push-button switch may have a housing 3 with grooves 8, the length of which may vary in different ways: either in the described embodiment, or in increasing order, either to the right i to the left or left to right. A push button switch can have two. or three contact springs 5. 8 such cases, it can operate in the following modes: open-closed-open, open-closed-closed-open-open. The presence of grooves of different lengths allows you to specify the sequence of connection or disconnection of control circuits. The switch can be used in system voltmeters, where it is necessary to set the measurement functions when

Claims (1)

Claim Pushbutton switch comprising housing with slots, reference 989602 fie, movable contact element and contact springs, one of which ends are fixed in a row on the base, characterized in that, in order to expand the functionality, the grooves in the housing are made of different lengths and others are freely movable the ends of the contact springs, while the length of the grooves is selected less than the free movement of the contact springs. to cl. Η 2. class Η