DE1921597U - CONTROL LEVER FOR ELECTRIC SWITCHES. - Google Patents

Description

RA.280 720 * -1.6.65

Patent attorney

DipUng. Heiiiridi Sdiaefer Λ / I

Hamburg-Wandsbek ° '

Ziessenissstrasse 6 - call 652 96 56

LA TELEMECANIQUE ELECTEIQüE,

, Avenue du Mareclial Joffre, NAlTEERE, Seine, Irankreieh,

Actuating plungers for electrical switches

The innovation relates to an actuating tappet for electrical Counter,

It is known that in industrial installations, for example for the control of machine tools, operator stations with one certain number of buttons are used to access the various Start motors, choose their speeds and stop them. The effects of these buttons must be clearly distinguishable be through the use of different colors or different plastic shapes and possibly also through inscriptions.

The buttons can be installed in a bowl-shaped recess, which prevents actuation due to carelessness when passing by a neighboring object of the operating stand. Among the various The shapes of the heads of such control buttons are often the flattened ones Mushroom shape that allows easier handling.

The buttons and their holders are generally sold by wholesalers kept in stock and it is necessary to adjust them prior to assembly with the to provide tappets adapted to each case, if necessary to remove a tappet in order to replace it with another.

The innovation allows this exchange to be carried out very quickly and without tools to undertake.

According to the innovation, the switch is equipped with a removable, high, stem-shaped plunger made of cast, resilient material, which is held in the cylindrical bush, which is attached to it by means of a rear, conical collar serves as a socket, which protrudes and is divided several times by slots. The number of slots is advantageous three. In fact, with only two slots it is difficult to remove the parts of the plunger to let spring through, which would be out of round in their assembly. With four slots it is also not easy to remove the plunger to let spring deflect inside, the type of actuation by three fingers of the hand has proven to be the easiest.

Further properties and advantages emerge from the following description of the drawing in which

Figure 1 is a view of a plunger according to the invention, which in its Protective collar is inserted, which is shown in section,

FIG. 2 shows, in perspective and on a smaller scale, a plunger according to the Shows invention being pressed by three fingers of the hand

Figures 3 and 4 on one side in section and on a smaller scale show a socket which establishes the connection between the plunger in its protective collar and a switch,

and Figure 5 is a top plan view of a metal shield overlying the device can be pushed.

In the embodiment shown, the plunger is according to the innovation formed by a hollow, removable handle 1. It has a rear, conical and slotted fastening collar on, which consists of a plurality of sections is formed, which are arranged in a circle at the end of the hollow cylindrical stem 1.

The ram according to the innovation is preferably made of cast material produced which has a suitable elasticity. This attribute is used to achieve a slight bending and unfolding of the parts of the collar 2. The slots 3, which delimit the sections 2, are V-shaped and extend into the cylindrical part 1 of the plunger in order in this way to favor the bends and unfolding of the sections of the collar. Preferably there are three Slots 3 and thus three sections 2 are present.

The projecting edge 4 of each section of the collar 2 forms one Holding stop of the section against the inner edge 5 of a protective collar 6 of the ram,

The protective collar 6 has a cup-shaped bore 7 and sits down inward via a connecting piece 8, in which the cylindrical stem of the plunger can slide. The connector 8 has an external thread 9, which allows its screwing to a socket 10 with a corresponding internal thread 11, whereby a connection between the plunger in his collar and a switch 12 is formed. The edges 4 of the sections of the collar 2 slip on the edge 5 of this connecting piece 8.

The socket 10 can be on the switch with the help of (not shown) Be fastened screws, which go through internal thread 13, the socket 10 also has claws 14 with screws 15 intended for attachment of the device, for example on a control panel, a membrane

can be provided inside the socket and is then located between the sections of the actuating collar 2 of the switch button it and the button 17 itself (Figures 3 and 4},

The protective collar 6 has a sealing joint 6a and the arrangement can with a stamped metal shield 18 {Fig. 5 | be equipped.

The device after the innovation works, is expanded and built on in the following wayj

When you press the plunger 1, the latter slides in the nozzle 8 as a guide, in order to act through its sections of the collar 2 on the membrane 16 of the centering bush and through this on the button 17 of the switch, When the pressure exerted on the plunger 1 is released, the button 17 regains its first position and pushes the plunger 1 back until the Edges 4 of the federal government 2 reach the edge 5 of the nozzle 8.

The ram after the innovation can be countered very quickly and without tools to be exchanged for another. .

The ram is removed by unscrewing the protective collar 6 from the socket 10, then against the three sections of the Federal 2 pressed so that they are slightly curved and their edges 4 from Edge 5 of the nozzle 8 of the protective collar to be cleared «It is sufficient to then to push the plunger outwards to completely push the plunger 1 to pull out of the protective collar 6.

The simultaneous bending of the three sections of the federal 2 happens according to the position of the three fingers of the hand; The thumb, index finger, and middle finger are morphologically best for exercising one same pressure in three points.

The installation of the same plunger or a different one that started the first to replace is done in the simplest way by the plunger slightly is inserted into the socket 8 of the protective collar until the edges 4 of the three sections of the collar come out of the socket to behind this Nozzle to form as many holding stops. The conical shape of the split collar facilitates the introduction of the plunger into the sliding guide support.

The above description serves to explain the innovation, without to fully mention the variants in the area of innovation.

For example, the centering bushing can be located above two switches which are arranged side by side, in this case the plunger actuates the two buttons of the two switches at the same time.

Shutza. claims;

Claims (4)

R A. 2 8 O 7 2 O * -1.6.65 Patent attorney -6- $ ή r S. {f ku Dipl-ing.HeinrichSdiaefer .-. "■ .. '■ ■, - _ -: ■■■ ..-. Hamburg-W., - d cc ;. Ziesenifett. 6 - Call 652 96 56 Protection claims : 1. Actuating plunger for electrical switches, which its position in a Slide guide stub can change, characterized in that he is formed by a removable, hollow handle (1) from a Material of suitable elasticity, which is provided with a rear waistband is, which is slotted in such a way that several sections {2} arise, which are suitable for the purpose of easy interchangeability, clip to unfold behind the slide guide of the plunger and easily to bend under the pressure of the fingers of the hand,. 2. plunger according to claim 1, characterized in that the collar {2} is conical is shaped. 3. plunger according to claims 1 and 2, characterized in that the Slots (3) of the federal government (2J-V-shaped and are in the extending cylindrical part (1) of the plunger. 4. plunger according to claims 1 to 3, characterized in that three Slots {3} and therefore three sections {2J of the federal government are available, that are bent by the thumb, index finger and middle finger of the hand be able.