DE7106289U - Actuation button especially for a switch shaft - Google Patents

Description

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Actuating button, especially for a switch axis

The innovation relates to an operating button with means for Fixing on an axis, especially a Sohalteracb.se.

There are already means for attaching an operating button known on one axis. Often it is a question of Schajfceraehsent, which are subjected to tension or pressure and / or rotation. Pull and rotary switches can be found in automotive engineering, among other things Use where it matters, the fastening device to be trained in such a way that a time-saving honing? .'-. 3 of the goiter, a sure sit'z. of the button and a simple " and cheap production of button and shaft ensures are.

In a known fastening device, the axis has axles nahraeöffung the actuator button on a thread, while the axle is provided with an external thread. The operating button must be screwed onto the axle in a time-consuming operation. This knob must prevent it from being twisted also be secured with a stud screw lying transversely to the longitudinal direction of the axis. Made from thermoplastics Buttons of this type tend to tear the threads, rendering the buttons unusable. Should this pulling out of the thread are avoided, so are additionally injected

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Metal bushings required, which make the button more expensive contribute.

At cin ^ r wfilt.firfin Refestirungseinrichtunr. does the actuator a smooth hole, and the button is turned. only by means of a threaded pin on the side with the axis tied together. In order to achieve a secure fastening of the button, the axis is flattened so that the threaded pin has a can assume an anti-twist position to the axis. That for that However, the threaded pin provided in the actuating button also tears out easily, so that a nut can remedy this is inserted into the button. This will make this fastening device however expensive, and the disadvantage of cumbersome assembly remains.

Another known fastener is used instead of the threaded pin a complicated and daiait teare Leaf spring with bite edges. If the operating button is pulled off several times this is easily damaged as a result of the edges.

The task of the innovation is to provide means for fastening an actuating button on an axis, in particular one Switch axis to create which avoid the disadvantages mentioned and which are particularly suitable for large-scale production of button and axle. This is achieved according to the innovation in that the actuating button is formed in one piece and provided with at least one resilient element reducing the diameter of the axle receiving opening is that the axis has a concentrically extending recess or a corresponding approach for receiving the resilient Has element that the actuating button or the axis with at least one extending in the axial longitudinal direction Approach is verseben and that the axis or the actuating button identifies a recess adapted to this approach.

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Special parts are necessary for such a fastening device! :: therefore not required. The resilient element of the operating button and the corresponding recess of the axis fcünn & n be designed so that the operating button as desired undetachable or attached under any Kruftau! wall iüsbai can be.

Cie element formed by the operating knob at least one extending in the axial longitudinal direction of the chamber and located between this chamber and the Achsenaufnähmeöffnung wall has a projecting into this opening Käs * ⁷ *: According to a further embodiment of the innovation, the federv is. A space is created by the chamber; in the wall mentioned when pulling off the actuation button. η can expand after the injection molding process and during assembly of the actuator.

The anti-twist protection is provided by the. In the longitudinal direction of the axis running Ausatz of the operating button and the adapted Reached recess of the axis. This approach can also have the axis, in which case the actuating button with the Recess is provided. For example, the actuating button can be one in the wall of the axle receiving opening in the longitudinal direction of the axle have extending spring that slides in a matching groove on the axis. According to a further training but the innovation can also be that running in the longitudinal direction of the axis The actuation button is attached to the bottom of the axles acceptance opening and the recess adapted to this approach be arranged at the end of the axis.

The innovation is shown using one in the drawing Embodiment explained in more detail. Show it

Fig. 1 shows the operating button in section along the line I - I in Fig. 2,

Fig. 2 shows the actuating button in longitudinal section and

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Flg. 3 the operating button in section after Line III-III in Fig. 2.

The oiustuckig ouö Kunäläicfi manufactured button 10 has three Chambers 12 running in the longitudinal direction of the axis and separated from one another by three webs 11. Central in button 10 there is an axle receiving opening. The one between this Opening and the wall located in a chamber 12 carries a reinforcement and a nose 13 which protrudes into this opening and thus reduces the diameter of the opening. The nose 13 is in the engaged 7.istand of the button in a recess 17 of the axis Ib; this recess is here as an annular groove a with a wedge-shaped cross-section. Pas material of the The wall and the nose 13 are designed in such a way that when the button is pushed onto the axis, it dodges into the chamber 12 can.

The button 10 also has two lugs 15, which enclose a recess Ik and which run in the longitudinal direction of the axis, at the bottom of the axis receptacle. A recess in the axis l6 aa axis end is adapted to these approaches in such a way that plane-parallel surfaces of the button extensions 13 and the axis end 18 lie on top of one another. As a result, the button and axle are connected to one another so that they cannot twist.

7106283a. 5.71

Claims (3)

SWF special factory for car accessories Gustav Rau GmbH., 712 Bietigheira - 5 - a Il 881 PAT / J / Vo / Wi 17.2.1971 claims for protection 1. Actuating button with T-elements for attachment to a Axis, in particular a switch axis, characterized in that the actuating button (10) forms an integral part and provided with at least one resilient element (13) which reduces the diameter of the axle housing opening is that the axis (16) is a concentric one Has recess (17) or a corresponding approach for receiving the resilient element (13) that the actuating pin or the axle is provided with at least one extension (15) extending in the axial longitudinal direction and that the axis or the actuating button has a recess adapted to this projection (15). 2. Actuating button according to claim 1, characterized in that the resilient element is formed in that the actuating button at least one chamber (12) extending in its axial longitudinal direction and that between this chamber and the axis receiving opening lying Vand an in this opening has protruding nose (13). 3. Actuating button according to claim 1, characterized in that that the concentrically extending recess (17) of the axis is an annular groove. <i. Actuating button according to Claim 3j, characterized in that that the annular groove has a wedge-shaped cross section, which can also be trapezoidal. - 6 - a II 881 5 «actuation button according to one of claims 1 to h, dc. ^ Ureh characterized in that the extension (15) of the actuation button running in the axial longitudinal direction ara the bottom of the axis receiving opening and the recess adapted to this approach are arranged at the end of the axis and that approach and Have recess lying on one another, plane-parallel surfaces in the axial longitudinal direction. C. Device according to claim 5, characterized in that the projection (15) has a recess (IA j .