DE1175313B - Electric rocker switch - Google Patents

Description

DUTCH REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Boarding school Class: H 02 c

German KL: 21c -28/02

Number: 1175 313

File number: S 67741 VIIId / 21c

Filing date: March 25, 1960

Opening day: August 6, 1964

The invention relates to an electrical rocker switch with a rigid intermediate lever and a compression spring which can be snapped over, vertically arranged contact arm, wherein intermediate levers and Compression spring are arranged in the rocker cavity. Known switches of this type have a complicated one voluminous construction, are relatively difficult to switch and result in considerable switching noises. In contrast, it is the object of the invention to design the snap members so that simple components can be easily assembled and arranged in a space-saving manner and at the same time live tilting bearings are avoided.

This is achieved according to the invention in that a resilient contact arm is clamped in the base base and a leaf spring arranged in the longitudinal direction of the rocker is provided as the compression spring, which is supported on two projections of the rocker and in its middle area on the upper end of the Presses intermediate lever, which is vertically displaceable and pivotable in a rocker guide and whose lower, notched end is supported close to contact on the edges of the contact arm.

The rocker is preferably mounted by means of two lateral legs and extensions, the inner surfaces the legs have guide grooves for laterally molded pins on the intermediate lever.

The intermediate lever can be U-shaped or box-shaped and the one at the end of the contact arm partially or completely enclose seated contacts.

An embodiment of the electrical switch according to the invention is described and in the Drawings reproduced, namely shows

F i g. 1 shows a central longitudinal section through the Counter,

F i g. 2 shows another longitudinal section, the cover and the lever being shown in elevation,

3 shows a section through the switch according to the lines III-III in FIG. 1 and

F i g. 4 and 5 perspective representations of different embodiments of the resilient contact arrangement.

The switch has a housing 1 with a cover 2 made of insulating material, preferably plastic. The switch rocker 3, which is hollow on the inside, is seated in a recess in the cover 2 between the side parts 2a.

In the base forming the lower part of the housing sits in a recess or pocket provided for this purpose the resilient contact arm 4 which carries the double contact 5 at its upper end. The contact-electric Rocker switch

Applicant:

Societe d'Etudes Electro-M6caniques, Paris

Representative:

Dipl.-Ing. R. Bibrach, patent attorney,

Göttingen, Pütterweg 6

Named as inventor:
G6rard Mang, Paris

Claimed priority:
France of March 25, 1959 (1790 349),
dated January 22, 1960 (816423)

arm 4 forming resilient plate is in its position by simply plugging it into the pocket 6 of the Housing bottom held, in which the end of a bent metal arm 7 is clamped on the the socket 8 sits for the connection of a power line.

The switch shown is, more precisely, a changeover switch with two fixed contacts 9 and 10 on both sides of the movable double contact 5.

Each of these fixed contacts 9 and 10 is seated on a curved metal arm 11, which has a socket 12 for the power supply connection. Each of the three versions 8 and 12 forms one in one on the housing base provided chamber held metal block into which a clamping screw 13 is screwed is, which leads in a cylindrical, drilled recess 14 on the housing bottom.

On both sides of the double contact 5 sits on the upper edge of the resilient contact arm 4 an intermediate lever 16 by means of notches 17 provided for this purpose. Both levers 4 and 16 form a snap-on one Toggle pair.

The intermediate lever 16 sits in the interior of the rocker 3 with its lateral pin 18 displaceably and pivotable in guide grooves 19 on the inside of lateral legs 20 of rocker 3 are appropriate.

A leaf spring 22 running in the longitudinal direction is inserted on the inner end face of the rocker, which is supported at the ends on projections 23 and in its central area on the upper end 21

, -, j ■ - _Λ 409 639/340

of the intermediate lever 16 presses and thus keeps the two parts 16 and 4 constantly in resilient engagement.

The inwardly extending cheeks 20 of the rocker 3 each carry a pivot pin 24 at the lower end on the outside, which is located in a recess 25 of the cover sides la and is secured by inner projections 26 of the housing.

After the switch has been assembled, the leaf spring 22 is bent and under tension. Therefore, rocker 3, intermediate lever 16 and contact arm 4 assume an inclined position to one another.

In the FIG. 1 and 2, the movable contact 5 is under the pressure of the position shown Spring 22 on the fixed contact 10, the intermediate lever 16 and the rocker 3 in one or the other Sense are buckled according to the spring action. To bring about a switchover, it is sufficient to press on the raised end of the rocker 3 and tip it over. When tilting around the Trunnions 24, the pivot pins 18 of the intermediate lever 16 are taken along by the rocker 3, and the toggle pair 4, 16, which is under the pressure of the spring 22, is quickly in its opposite The position is snapped until the contact 5 touches the fixed contact 9. The pressure of the spring 22 also keeps the contacts 5 and 9 closed in this new position.

The quick change of inclination ensures a quick separation of the contacts achieved and the possibility of a prolonged arc between the contacts avoided. The pivot pins 24 on the side cheeks of the rocker 3 are relatively close to the housing base. This increases the tilting travel of the pivot pin 18 of the intermediate lever 16 and reduces the on Rocker actuating force to be exerted.

The intermediate lever 16 is made of plastic and is supported on the edges of the resilient contact arm 4, which is covered by an intermediate cladding piece 29, preferably made of metal to prevent parts from wearing out quickly.

The switch shown can be a changeover switch or a switch depending on the connection of the individual contacts Be an interrupter. Another possible embodiment is to form a push-button contact, the the circuit only closes as long as the control button is pressed. In this case it can a leaf spring 28, shown in dashed lines in FIG. 1, may be provided in the base of the housing, which the push button or rocker 3 automatically returns after releasing it.

In special cases, the resilient contact arm 4 can also according to FIG. 5 two bends 32, 33 have to press the upper edge of the contact plate 4 against the lever 16 from below.

The intermediate lever 16 according to FIG. 5 U-shaped or box-shaped and that for this purpose narrower arm end 4 α, which carries the contact 5, enclose.

Claims (3)

Patent claims: 1. Electric rocker switch with a rigid intermediate lever and a compression spring Snap-on, vertically arranged contact arm, with intermediate lever and compression spring are arranged in the rocker cavity, characterized in that a resilient Contact arm (4) clamped in the base bottom and a compression spring in the longitudinal direction of the Rocker (3) arranged leaf spring (22) is provided, which is attached to two projections (23) of the Rocker and in its middle area on the upper end (21) of the intermediate lever (16) presses, which is mounted in a rocker guide (19) vertically displaceable and pivotable and its lower, notched end (17) is supported close to contact (5) on edges of the contact arm (4). 2. Switch according to claim 1, characterized in that the rocker by means of two lateral Legs (20) and lugs (24) is mounted and that the inner surfaces of the legs guide grooves (19) for laterally formed on the intermediate lever Have pins (18). 3. Switch according to claim 1 and 2, characterized in that the intermediate lever (16) Is U-shaped or box-shaped and partially seated on the contact arm contacts (5) or completely encloses. Considered publications:
German utility model No. 1 697 554,
298; Swiss Patent No. 323 141;
British Patent No. 732 357. 1 sheet of drawings 409 639/340 7.64 © Bundesdruckerei Berlin