DE7223274U - POTENTIOMETER FOR MOTOR VEHICLES - Google Patents

Description

SWF special factory for jAuto.zu'bjihßr Gustav Rau GiIiI) II., 712 Die bighelm

a 12 060

PAT / J / Vo / Wl June 15, 1972

Potentiometers for automobiles

The innovation concerns a potentiometer for installation in the Dashboard of a motor vehicle with an in a housing rotatably mounted actuator to which a double spring is attached, which has a resilient end a contact plate and the other resilient end grinds on a resistance element.

Such potentiometers are used as a control element for the interval switch the windshield washer system is used to reduce the duration of viewing and / or the breaks between wiping to be able to vary.

In the known potentiometers of this type, the double spring is composed of two identical contact springs, which be electrically connected to each other with the help of a rivet and at the same time fixed to the actuator. These Fastening type and design of the double spring requires three parts, which in a time-consuming operation with the actuator get connected.

It is the task of the innovation to reduce the number of parts and the fastening in such a potentiometer to greatly simplify the double spring on the actuator in order to reduce the overall production of the potentiometer.

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approve. After the reorganization, this is achieved in that the double spring is bent in one piece and in a V-shape and that the double spring is in the connecting area of the two shear legs as a plug-in approach with lateral Uast approaches' and limiting approaches is formed, which is pressed into a plug receptacle of the actuating member. The J) oppelfoder can can also be produced fully automatically in this form as a part. The fastening rivet is omitted because it sicti the Eastansäts «of the piece approach of the Doppsifödsr at the press = hook into the Stcclcaufnahme in the wall. So that plugging in is not too difficult and still an excellent one Determination is achieved opposite to the plugging direction, it is provided that the locking lugs have an approximately right-angled triangular shape, the hypotenuse in the plugging direction rises flat and the free cathetus falls perpendicular to the longitudinal edge of the plug-in attachment of the double spring. The double spring can then only be released from the actuating element by force and by destroying the plug-in receptacle.

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Deformed sets is provided that the width of the plug-in approach in the area outside the locking lugs is matched to the width of the plug-in receptacle in the actuator.

Uia a good contact with the new double spring sure

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are arched outward in the end areas and designed as a sliding contact. This training can be used in the manufacture the double spring in the punching and bending process keep his

A defined adjustment and sliding movement of the double spring is achieved in that the central longitudinal axis of the double spring intersects the axis of rotation of the actuator and that the contact plate and a VJiderstandselement carrying Plate parallel and directed in the swivel plane of the double spring are fixed in the housing.

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Dei a combination of a toggle switch and a potentiometer can be designed so that the actuating member is rotatably mounted in a toggle button which is itself tiltably mounted in the housing. The toggle switch and the potentiometer can then be operated and set independently of each other. The mounting of the two actuating members is preferably such that the mounting of the actuating member in the toggle button and the mounting of the toggle button in the housing have a common axis of rotation or tilting.

The innovation is shown using one of the drawings Execution example explained in more detail. Show it

Fig. 1 is a longitudinal section through a in a

Housing built-in potentiometer * according to the innovation and

FIG. 2 shows a section through the potentiometer according to FIG. 1 along the line II-II.

In the bottom of the housing 13 is a longitudinally aligned Koiitaktplatte 18 set, which over the Steckanscniüß i ?, which is carried out in an office break in the housing 13 and is locked, is led to the outside. In the same way, one end of the resistor element is via the plug connection 12 20 outwards, which is fastened on a carrier plate 10. This carrier plate 10 runs parallel to the IContalct plate 18.

The housing 15 itself has a fastening edge in the area the open end face and resilient latching elements on the side walls so that it is in a recess in a known manner the dashboard can be set.

As can be clearly seen from FIG. 2, the open

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The end face of the housing 13 can be closed by a tilting bar lh , which is tiltably mounted in the bearing bore 25 of the housing 13 via bearing supports 2h. This toggle button lh can be used to control a non-pitched switch.

The toggle button l'i has a recess in which an actuating member 15 for the i'otcntiome ter is adjustably mounted. For this purpose, the actuating member 15 has bearing bores 23 into which the bearing lugs 22 of the toggle button lh engage. The axis of rotation B of the actuator 15 coincides with the tilt axis of the toggle button lh .

The actuator 15 has a Steckaufn.ab.Gic in its interior 11, the cross section of which is matched to the cross section of an insertable double spring 16. These double songs l6 is in one piece and bent V-shape so that form two free legs. In this connection area, the two legs are designed as a plug-in attachment delimited by limitation approaches 21 and lateral ßast approaches 19 is. The limiting projections 21 limit the insertion movement of the double spring 16 into the plug-in receptacle 11. The locking lugs 19 are designed so that they have an approximately have a right-angled triangular shape. The hypotenuse rises flat in the direction of the steek and one leg is vertical directed towards the side edge of the plug attachment of the double spring 16. This is achieved when the width of the plug-in approach corresponds approximately to the width of the plug-in receptacle 11 that is the double spring 16 is still relatively easy in the receptacle 11 can be pressed in. In the opposite direction, however, the locking lugs 19 offer strong resistance, since they are in bite the wall of the socket.

The central longitudinal axis A of the double spring 16 is aligned so that it intersects the axis of rotation and tilting. The ends the legs of the double spring 16 are curved outward

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and designed as a sliding contact. The V-shaped shape of the double spring 16 generates the contact pressures, those for the contacts to the contact plate 18 and the ¥ ids ^ - standseleiaent 20 are required.

Among other things, the plug-in attachment of the double spring 16 does not have a hole for one In this area, however, there must be no longer any need for stabilization the double spring also does not show any weakening of the cross-section. this is another advantage of the new type of fastening.

Claims (1)

SWF special factory for car accessories Gustav Rau GmbH. , 712 Bietiglieim - 6 - a 12 060 ΡΑΤ / J / Vo / Wi June 15, 1972 Protection claims 1. Potentiometer for installation in the dashboard of a Motor vehicle with an actuator rotatably mounted in a housing to which a double spring is attached is that with one resilient end on a contact plate and with the other resilient end grinds a resistance element, characterized in that the double spring (16) is in one piece and V-shaped is bent and that the double spring (l6) in the connecting area of the two legs as a plug-in attachment with lateral Latching lugs (: l-9) and limiting lugs (21) is formed, which is pressed into a plug-in receptacle (11) of the actuating member (15). 2 ,, potentiometer according to claim 1, characterized in that the width of the plug-in attachment in the area outside the locking attachments { 19) is matched to the width of the plug-in receptacle (ll) in the actuating member (15). 3. Potentiometer according to claim 1 or 2, characterized in that the legs of the double spring (l6) in the End areas are arched outward and designed as a sliding contact. k. Potentiometer according to one of Claims 1 to 3, characterized in that the central longitudinal axis (A) of the double spring (16) intersects the axis of rotation (B) of the actuating member (15). - 7 - - 7 - a 12 060 5. Potentiometer according to one of claims 1 to h. , characterized in that the contact plate (18) and a plate (lü) carrying the resistance element (20) are fixed in the housing (13) parallel and directed in the pivot plane of the double spring (l6). 6. Potentiometer according to one of claims 1 Ms 5, characterized characterized in that the actuator (15) in a Toggle button (i * i) is rotatably mounted (22, 23), which itself is mounted tiltably (2't, 25) in the housing (13). 7. Potentiometer according to claim 6, characterized in that that the storage of the actuator (15) in the Toggle button (i ^ t) and the La.geru3.1g of the toggle button (-l't) im Housing (13) have a common axis of rotation or tilting (B). 8. Potentiometer according to claim 1, characterized in that that the locking lugs (19) are roughly right-angled triangular Have shape, with the hypotenuse rising flat in the insertion direction and the free cathetus perpendicular to the longitudinal • The edge of the plug-in attachment of the double spring (l6) falls off.