DE8018104U1 - Electrical rotary switch - Google Patents

Description

"Electrical rotary switch ¹¹

The invention relates to an electrical rotary switch with contacts that can be brought into contact by turning the handle of the switch.

The object of the invention is to enable mechanical detection of the direction of rotation of the switch and thus to enable simple storage of impulses.

There are known, for example, for setting time switches, which depend on the Speed of rotation generate electrical impulses. The faster such a switch or. its handling is rotated, the higher the pulse frequency. For the clear function of this switch, the Detection of the direction of rotation for the downstream electrical switching function is an essential requirement.

For example, there should be an electric clock or can be reset = So far it has been customary in so-called bit generators to detect the direction of rotation by means of electronics. This is done by initially detecting the direction of rotation by an electronic component when turning.

Depending on the direction of rotation, this component sends a corresponding output pulse to line A o * r B of a counter (electronic counter). Regardless of the inherent inertia of the device, a further component is required in addition to the mechanics and the counter. In addition, an additional short-circuit key is required for the so-called step function, by means of which the detected pulses can be fed to a memory.

Furthermore, the mechanical part of these known devices is very susceptible to wear because there is over a circuit board a sliding contact is running. The abrasion between these parts is significant.

The invention now shows a way how by turning the switch immediately BEZW a contact. Impulse is given to line A or B (depending on the direction of rotation), i.e. counting up or down.

To this end, it suggests that two stationary contacts be arranged at a distance from one another in the switch housing are that between these a flexible, resilient further contact is held and that the rotatable handle when turning this contact depending on the direction of rotation with one of the two stationary Temporarily brings contacts into physical contact.

The fixed contacts are depending on the Drdsinn intermittently connected to the movable spring contact.

The pulse counting takes place simultaneously with the Internal rotation detection through the corresponding mechanical design of the switch.

In addition, there is no frictional wear between the contacts.

It is advantageous, that on the handle at least one with the elastic contact corresponding driver is attached, which the contact from the rest position up deflects to touch contact with one of the two stationary contacts, after reaching the contact position the contact springs back into the rest position.

The driver leads the spring contact to one or the other stationary contact.

There the spring contact is held by the stationary contact, while the driver is temporarily held elastic bending of the spring contact away from the driver - slides over the spring contact. The spring contact snaps back into the rest position and is picked up again by the next driver, etc.

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It is preferably provided that the stationary contacts are two fastened at a distance from one another in the housing Pins are whose connection flags or the like. After out and executed their inner ends to the inner handle underside run out freely, that furthermore the elastic contact forms a free, relatively long bending arm is held transversely to the handle in the housing, with its connection flag from the Housing is led out, and its free contact-making end between the free contact-making Ends of the stationary contacts is arranged that further the handle on its underside has a large number of drivers regularly distributed on a common circle, which are attached radially far outwards on the underside.

The drivers can be rounded or beveled in the direction of rotation in order to facilitate the function. | It is particularly advantageous that the drivers are at a distance from one another in the rotation, which is slightly smaller than the distance between the stationary contacts.

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This ensures that the resilient contact

not by chance the other stationary ones when springing back

Meets contact and thus creates a false impulse,

f because namely the next driver in the direction of rotation as

Stop for the spring-back contact is used.

' In combination' it is provided that the> rtsfest

|; Contacts V-shaped towards the bottom of the housing towards one another

have tapered, free ends whose distance on the bottom side is less than or equal to the dimension of the elastic Contact is measured in Eichtung to the stationary contacts, and that the handle is axially to the ground Is designed to be displaceable towards, the elastic contact by means of the handle like a pushbutton switch can be brought into physical contact with both stationary contacts, and that at the same time.

As a result, the arrangement of an additional pushbutton switch is in accordance with the statements made at the outset superfluous.

It is preferably intended that the elastic contact is the axially effective return spring for the handle forms.

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The electrical die switch can also be combined with a pulse counter, bo that each stationary contact with an input of an electrical counter and the elastic contact with an external electrical supply line is connected, so that the detection of the direction of rotation of the handle and the counting of the switching impulses takes place immediately.

iiieiter is advantageous if by short-circuiting the Fixed contacts by means of the elastic contact by means of axial displacement of the handle an output of the determined impulse value to an electrical memory takes place.

An embodiment of the invention is shown in FIG Drawing shown and described in more detail below.

It shows:

1 shows the switch in the rest position in section; Fig. 2 is also sectioned rotated ^{by 9G G;} 3 shows the switch according to FIG. 1 in a pushbutton function;

Fig. K the same seen in FIG. 2;

Fig. 5 the switch seen from above, partially in section.

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The electrical rotary switch consists of a housing 1 with a cover 2 that has been blown in. Inside this housing i two stationary contacts 3, 4 are supported, which on the one hand consist of the Housing 1 are led out to the outside, so that an electrical connection with the exposed Terminal lugs can take place, and the other hand inside the housing from the bottom of the same to the cover 2 executed diverge.

The contacts 3, 4 are spaced slightly less than the conductor thickness near the ground.

With this corresponds to an elastic, bendable contact 5, the free end between the contacts 3, 4 is, in the rest position in a central position (Hg. 1) and in the working position deflected to the right, left or down. The contact 5 runs over the entire width of the housing and is cranked in the central area, so that in the rest position, the contact is termed end near the housing cover and the end that leads to the outside rests on the case back.

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To operate the contact 5, a handle 6 is inserted centrally in the cover 2, which consists of a There is driver 7 provided disc and a stub axle.

The handle 6, together with its disk, can be rotated (to the right and left) and can be moved to the housing base >Ητ> .

It is under constant stress from the spring action of the contact 5 »the 66 ^ · by a separate peder can be supported.

The drive plate of the handle has a circular shape, its diameter being dimensioned so that it is smaller than the distance between the contacts 3,4- from the center of the disc, so that the contacts 3 ^ when the handle is axially displaced outside of the drive plate penetrated space lie.

In Pig. 3 and 4 the pushbutton function is shown. The handle 6 is moved zxsa housing bottom, so that the contact 5 connects the contacts 3 and 4 are conducting.

If the handle 6 is released, the position according to K-g arises. 1 and 2 a.

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If the handle 6 is rotated in this position, the contact 5 is controlled by the drivers depending on the direction of rotation moved towards contact 3 or 4.

When the contact position is reached, the respective driver 7 slides over the contact 5 while already the next driver is aligned to take the contact 5 again.

A pulse frequency is transmitted and measured depending on the rotational speed. The distance between adjacent drivers is small smaller than the distance between the contacts 3, 4 in the switching plane according to Figs. 1 and 2, so that it snaps back of contact 5 is prevented up to the respective other contact 3 or 4, i.e. incorrect pulses are excluded are.

In the example, the disc of the handle 6 has twelve drivers 7.

All new individual and combination features disclosed in the description and / or drawing are considered essential to the invention.

Claims (6)

Dipl. Ing. Jörg: Söfaülte * - Γ-Aj Patentanwalt Approved representative at the European Patent Office Patent Attorney DIpI, Ing, Sohulte Hauptstr, 73 · 43OO Esssn 18 the German Patent Office 8000 Munich 2 Tel. (Ο2Ο54) 77 13 Hau ptstrasse 73 43OO Essen- Kettwig accounts: Stadtsparkasse Essen 7 020 571 (BLZ 36050105) Postsoheok: Essen 210734-433 (BLZ 36010043) Date Λ. July 1980.: Company Pistor GmbH. To the Steinert 6 + 7 5880 I / iidenscheid Ref .: 7464/80 Please state in the answer. Protection claims 1. Electrical rotary switch with contacts, by turning the handle of the switch can be brought into contact, characterized in that that in the shell housing (1) two stationary contacts (3, ⁷ I-) are arranged at a distance from each other, that a flexible, resilient further contact (5) is held between them and that the rotatable handle (6) when turning this contact (5) depending on the direction of rotation with one of the two stationary ones Contacts (3, ⁷ O temporarily makes touch contact. 2. Electrical rotary switch according to claim 1, characterized in that the handle (6) at least a driver (7) corresponding to the elastic contact (J?) is attached which makes the contact (5) from the rest position to the touch contact deflects with one of the two stationary contacts (4,3), after reaching the contact position of the Contact (5) springs back into the rest position. 3. Electrical rotary switch according to one of the claims 1 or 2, characterized in that the stationary contacts (3, 4 ·) are two at a distance from each other in Housing (1) attached pins are, their terminal lugs or the like. Outwardly and their inner ends to the inner handle underside executed run free that further the elastic contact (5) forming a free, relatively long bending arm transversely to the handle (6) running in the housing (1), with its terminal lug from the housing (1) is led out, and its free contact-making end between the free contact-making Arranged ends of the stationary contacts (3 »4 ·) is that further the handles (6) on their underside. a large number of regularly on one common circle distributed arranged drivers (?), which radially far outside on the lower = side are attached. 4. Electrical rotary switch according to one of the.! Claims 1 to 3, characterized in that the drivers (7) are spaced apart from one another in the direction of rotation have, which is slightly smaller than the distance between the stationary contacts (3,4-) from one another is. 5. Electrical rotary switch according to one of claims 1 to 5, characterized in that the stationary Contacts (3, 4) have V-shaped free ends that run towards one another towards the housing base, k / 5 whose distance on the bottom side is less than or equal to the dimension of the elastic contact (5) measured in Direction to the stationary contacts (3, Ό is, and that the handle (6) axially towards the ground is designed to be displaceable, uiobei the elastic contact (5) by means of the handle (6) taetachalter-like in touch contact with both stationary contacts (3, 4) can be brought, at the same time. 6. Electrical rotary switch according to one of claims 1 to 5, characterized in that the elastic contact (5) forms the axially uirksame return spring for the handle (6).