DK142826B - Switch. - Google Patents

Description

(11) PRESENTATION OF PRESENTATION 142826 DENMARK (51) Int. Cl.3 H Ol H 19/54 '(21) Application No 951/74 (22) filed on 22 February. 1974 (24) Running day Feb 22 1974 (44) The application submitted increase the submission document published on 2 Feb. 1981

DIRECTORATE OF

PATENT AND TRADEMARK OW Priority Books' from it

Feb 25 1973 * 1627/73 * AT

(71) HUBERT LAURENZ NAIMER, Schumanngasse 35-37 * 1181 Vienna, AT.

(72) Inventor: Gottfried Alsch, Gen ar o gas se 5/4/8, 1232 Vienna, AT.

(74) Plenipotentiary:

Hofman-Bang & Boutard Engineering Company.

(64) Rotary switch.

The invention relates to a pivot contact with spring-loaded electrical contact means and arranged offset from the plane of the contact means.

The known turning contacts of this kind, although due to the reciprocal displacement of the electrical contact members and the pawl members, benefit from a low building height, however, the known construction is chosen such that a common cam is provided for the electrical contact members and the pawl members. , which at the same time has the task of operating the contact means and determining the position of the rotary contact, which means a significant reduction in the possible contact combinations. In addition, at this known pivotal contact, the electrical contact means and the pawl members are arranged together in a free space in the contact pair or contact, so that there is only a poor spatial separation of these two compartments.

It is therefore the object of the invention to provide a pivot contact which, while maintaining a low building height and far-reaching spatial separation of the electrical contact means and the pawl members, allows the setting of as diverse a switching program as possible.

This is achieved according to the invention in that the turning contact is characterized by the characteristic part of claim 1.

Thus, the electrical contact means and the pawl members are spatially separated from each other by means of the base plate.

As a result of this inventive construction, it is also possible to place both the electrical contact members and the pawl members on a special cam *, thereby not only achieving a substantially more extensive switching program, but also a differentiated setting of the electrical contact members and the overall rotary contact holding force.

The invention will now be described in more detail with reference to the drawing, in which fig. 1 is a vertical view of a contact mechanism with a removable cover; FIG. 2 shows a vertical view of the pawl seen from the opposite side to FIG. 1; and FIG. 3 is a section along line III-III of FIG. 2nd

The present contact has a housing part 1 with a cam 2 located therein, which is coupled by means of a tooth 3 with a (not shown) drive shaft or with a similar or similar axially movable other contact. Inside the housing part 1, grooves 4 are made in which the thrust bars 5 are slidable. The shock bars carry contact bridges 6 and are subject to the action of compression springs 7. The contact contact parts 8 of the contact bridges are housed in cut-outs in the housing part 1, as is already known per se.

Further connection terminals 10 for the contact part 8 are also seen.

In the housing part 1, further guides 11 and 12 are arranged, in which pawl elements 13 are slidable, which pawl elements cooperate with the pawl disc 14, fig. 2. The pulley disk 14 is disposed on the same axis with the cam disk 2 and touches it. The two discs are coupled to each other or they form a single component. The pallet elements 13 are sliding pieces which are predominantly arranged in compartment 22 and are provided with a guide profile (15, Fig. 3) which cooperates with a corresponding counter profile 16 which is arranged in guide notes 11 in the housing part 1. Thus, the pallet elements cannot project from their guides in the direction of the contact axis (arrow A, Fig. 3). They are inserted into these guides from the center cut-out 21 of the housing part 1, even before the washers 2, 14 have been inserted into the part 1. The pallet elements are provided with a cylindrical cut-out 17 in which pawl springs 18 are placed which support against the wall 19 in the cut-out 17 and the bottom 20 of the cut-out 17, as can be seen clearly in FIG. 2nd

It is therefore apparent that the present contact construction method is not only compact in that a pallet mill producing a special construction part is avoided, but while on the other hand, a whole of the camshaft shape independent of a pallet structure is provided, which can be constructed constructively so that it meets all requirements as to the scope of such a device. The contact of the invention may have a reduced axial extent, i.e. it can be manufactured in a material-saving manner.

The housing and its (not shown) usual cover are conveniently made by injection molding. Also the pallet or cam is made of thermoplastic material and this also applies to most other parts, insofar as they may not consist of metal due to the electric power line. Such a largely metal-free structure is known per se. The springs 7 and 18 naturally consist of metal.