DE1040654B - Self-locking electrical switch or rotary resistor with knurled wheel, especially for portable devices, e.g. B. Radios - Google Patents
Self-locking electrical switch or rotary resistor with knurled wheel, especially for portable devices, e.g. B. RadiosInfo
- Publication number
- DE1040654B DE1040654B DET13177A DET0013177A DE1040654B DE 1040654 B DE1040654 B DE 1040654B DE T13177 A DET13177 A DE T13177A DE T0013177 A DET0013177 A DE T0013177A DE 1040654 B DE1040654 B DE 1040654B
- Authority
- DE
- Germany
- Prior art keywords
- knurled
- knurled wheel
- tongue
- radios
- portable devices
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 239000004793 Polystyrene Substances 0.000 claims description 2
- 238000001746 injection moulding Methods 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- -1 polyethylene Polymers 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 229920002223 polystyrene Polymers 0.000 claims description 2
- 210000002105 tongue Anatomy 0.000 description 9
- 238000010276 construction Methods 0.000 description 1
- 210000005182 tip of the tongue Anatomy 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
- G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
- G05G1/08—Controlling members for hand actuation by rotary movement, e.g. hand wheels
- G05G1/10—Details, e.g. of discs, knobs, wheels or handles
-
- B60K35/10—
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
- G05G5/00—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member
- G05G5/06—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member for holding members in one or a limited number of definite positions only
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
- H01H3/08—Turn knobs
-
- B60K2360/126—
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
- H01H19/001—Thumb wheel switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
- H01H3/20—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch wherein an auxiliary movement thereof, or of an attachment thereto, is necessary before the main movement is possible or effective, e.g. for unlatching, for coupling
Description
Bei tragbaren Rundfunkgeräten, insbesondere bei Kleinstgeräten, z. B. Transistorempfängern, ist es üblich, Lautstärkeregler mit einem Drehschalter zum Ausschalten des Gerätes zu verwenden. Aus Raumersparnisgründen wird oft der Bedienungsknopf des Lautstärkereglers mit Drehschalter als Rändelscheibe ausgebildet und so weit ins Gehäuse eingebaut, daß nur noch ein kleines Segment der Scheibe zu sehen ist.In portable radios, especially small devices such. B. transistor receivers, it is common to use volume control with a rotary switch to turn off the device. To save space the control knob of the volume control with a rotary switch is often used as a knurled wheel designed and built so far into the housing that only a small segment of the disc can be seen.
Nun ist es leicht möglich, daß diese Rändelscheibe unbemerkt und ungewollt beim Transport gedreht wird. In diesem Falle ist das Gerät eingeschaltet, und die Lebensdauer der Batterie wird unnötig verkürzt. Now it is easily possible that this knurled washer rotated unnoticed and unintentionally during transport will. In this case, the device is switched on and the life of the battery is unnecessarily shortened.
Die Erfindung gibt eine einfache Konstruktion an, die diesen Nachteil vermeidet. Erfindungsgemäß ist die Rändelscheibe eines Schalters oder Drehwiderstandes längs ihres Randes in einem kleinen Abstand vom Rande so geschlitzt, daß eine Zunge entsteht, deren freies Ende über den Rand etwas vorsteht. In der vorbestimmten Stellung der Rändelscheibe stößt das freie Zungenende gegen einen Anschlag des Gehäuses. Dadurch wird ein ungewolltes Drehen oder Weiterdrehen der Rändelscheibe verhindert. Erst nach Drücken auf das freie Zungenende kann die Rändelscheibe gedreht oder weitergedreht werden.The invention provides a simple construction which avoids this disadvantage. Is according to the invention the knurled wheel of a switch or rotary resistor along its edge at a small distance slit from the edge so that a tongue is formed, the free end of which protrudes slightly over the edge. In the predetermined position of the knurled wheel pushes the free end of the tongue against a stop on the housing. This prevents unintentional turning or further turning of the knurled wheel. First After pressing the free end of the tongue, the knurled wheel can be turned or turned further.
Das freie Ende der Zunge kann durch eine Nase verbreitert werden. Die Rändelscheibe besteht z. B. aus einem elastischen Kunststoff, z. B. aus Polystyrol, Polyäthylen, und ist dann in einem Arbeitsgang im Spritzgußverfahren hergestellt.The free end of the tongue can be widened by a nose. The knurled wheel consists z. B. made of an elastic plastic, e.g. B. made of polystyrene, polyethylene, and is then in one operation Injection molding produced.
An Hand der Zeichnung wird nachstehend ein Ausführungsbeispiel erläutert.An exemplary embodiment is shown below with reference to the drawing explained.
In Fig. 1 ist ein Teil einer Seite eines Transistorempfängers mit Ausschnitt für Rändelscheibe und in Fig. 2 die gesamte Rändelscheibe nach Entfernen des Gehäuseunterteils dargestellt. Das Gehäuse ist in Oberteil 1 und Unterteil 2 geteilt. Das Unterteil hat einen rechteckigen Ausschnitt 3, der sich nach außen zwecks besserer Bedienung der Zunge 4 der Rändelscheibe 5 erweitert. Die Rändelscheibe steckt auf der Achse eines Lautstärkereglers mit Drehschalter zum Ausschalten des Gerätes. Die Zunge ist durch eine nach außen weisende Anscblagnase 6 verbreitert, die in der Aus-Stellung des Schalters gegen den keilförmigen Anschlag 7 des Gehäuses stößt. Erst nach Drücken auf Anschlagnase 6 kann die Rändelscheibe in Pfeilrichtung gedreht und dadurch das Gerät eingeschaltet werden. Zunge und Nase dürfen nicht stärker sein als der Abstand vom Anschlag bis zum Innenrandschlitz. Ein Abbrechen der Zunge, bei Beanspruchung in entgegengesetzter Pfeilrichtung ist nicht möglich, da die Spitze der Zunge von unten gegen den Anschlag drückt und der Schalter in entgegengesetzter Pfeilrichtung blockiert ist.In Fig. 1 a part of one side of a transistor receiver is shown with a cutout for the knurled washer and in Fig. 2 the entire knurled washer after removing the lower part of the housing. The housing is divided into upper part 1 and lower part 2. The lower part has a rectangular cutout 3, which widens outwards for the purpose of better operation of the tongue 4 of the knurled washer 5. The knurled wheel is on the axis of a volume control with a rotary switch to turn off the device. The tongue is widened by an outwardly facing stopper 6 which, in the off position of the switch, strikes against the wedge-shaped stop 7 of the housing. The knurled disk can only be turned in the direction of the arrow after pressing the stop lug 6, thereby switching on the device. The tongue and nose must not be thicker than the distance from the stop to the inner edge slot. It is not possible to break off the tongue when it is stressed in the opposite direction of the arrow, as the tip of the tongue presses against the stop from below and the switch is blocked in the opposite direction of the arrow.
Selbsttätig sich verriegelnder
elektrischer Schalter oder DrehwiderstandAutomatically locking
electrical switch or rotary resistor
mit Rändelscheibe,with knurled wheel,
insbesondere für tragbare Geräte,
z.B. Rundfunkgeräteespecially for portable devices,
e.g. radios
Anmelder:Applicant:
Telefunken G. m. b. H.,
Berlin NW 87, Sickingenstr. 71Telefunken G. mb H.,
Berlin NW 87, Sickingenstr. 71
Richard Berger, Wunstorf bei Hannover,
ist als Erfinder genannt wordenRichard Berger, Wunstorf near Hanover,
has been named as the inventor
Die Erfindung beschränkt sich nicht auf Verriegelung von Aus-Schaltern, sondern auch andere Einbauteile, z. B. Umschalter, Wellenbereichschalter, Dreh widerstände, können entsprechend verriegelt werden. Es können auch mehrere Zungen mit oder ohne Anschlagnase an der Rändelscheibe zwecks Verriegelung mehrerer Punkte im Drehbereich angebracht sein.The invention is not limited to locking of off switches, but also other built-in parts, e.g. B. Changeover switch, waveband switch, Rotary resistors can be locked accordingly. There can also be several tongues with or attached to the knurled disc without a stop lug for the purpose of locking several points in the turning area be.
Claims (3)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DET13177A DE1040654B (en) | 1957-01-30 | 1957-01-30 | Self-locking electrical switch or rotary resistor with knurled wheel, especially for portable devices, e.g. B. Radios |
GB2756/58A GB879468A (en) | 1957-01-30 | 1958-01-28 | Improvements in or relating to rotatable knobs |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DET13177A DE1040654B (en) | 1957-01-30 | 1957-01-30 | Self-locking electrical switch or rotary resistor with knurled wheel, especially for portable devices, e.g. B. Radios |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1040654B true DE1040654B (en) | 1958-10-09 |
Family
ID=7547250
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DET13177A Pending DE1040654B (en) | 1957-01-30 | 1957-01-30 | Self-locking electrical switch or rotary resistor with knurled wheel, especially for portable devices, e.g. B. Radios |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1040654B (en) |
GB (1) | GB879468A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1295684B (en) * | 1963-09-06 | 1969-05-22 | Bosch Gmbh Robert | Handle switch with locking device for an electric motor-driven hand tool |
US5723832A (en) * | 1996-07-11 | 1998-03-03 | Hall; James K. | Switch guard for electric switch assembly |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5540115A (en) * | 1995-02-24 | 1996-07-30 | Levy; David H. | Ergonomic thumbwheel |
-
1957
- 1957-01-30 DE DET13177A patent/DE1040654B/en active Pending
-
1958
- 1958-01-28 GB GB2756/58A patent/GB879468A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1295684B (en) * | 1963-09-06 | 1969-05-22 | Bosch Gmbh Robert | Handle switch with locking device for an electric motor-driven hand tool |
US5723832A (en) * | 1996-07-11 | 1998-03-03 | Hall; James K. | Switch guard for electric switch assembly |
Also Published As
Publication number | Publication date |
---|---|
GB879468A (en) | 1961-10-11 |
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