DE374754C - Signal horn with a centrally clamped membrane that is electromagnetically excited by a ring magnet - Google Patents
Signal horn with a centrally clamped membrane that is electromagnetically excited by a ring magnetInfo
- Publication number
- DE374754C DE374754C DEK80927D DEK0080927D DE374754C DE 374754 C DE374754 C DE 374754C DE K80927 D DEK80927 D DE K80927D DE K0080927 D DEK0080927 D DE K0080927D DE 374754 C DE374754 C DE 374754C
- Authority
- DE
- Germany
- Prior art keywords
- membrane
- ring magnet
- signal horn
- ring
- electromagnetically excited
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K13/00—Cones, diaphragms, or the like, for emitting or receiving sound in general
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
- G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
- G10K9/13—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using electromagnetic driving means
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Electromagnetism (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Description
Signalhupe mit durch einen Ringmagneten elektromagnetisch erregter, zentral eingespannter Membran. Die nachstehend beschriebene Erfindung erstreckt sich auf Signalhupen mit elektromagnetisch erregter Membran.Signal horn with electromagnetically excited by a ring magnet, centrally clamped membrane. The invention described below extends on signal horns with an electromagnetically excited membrane.
Es sind bereits Signalhupen bekannt, bei denen die Mennbran am Rand. eingespannt ist und durch einen achsia1 gelagerten Elektromagneten erregt wird. Ebenso sind Membranhupen bekannt, die nur in der Mitte eingespannt sind, wobei der als Topfmagnet ausgebildete Elektromagnet auf den Rand der Membran wirkt, sei es direkt oder unter Zuhilfenahme eines besonderen, die Kraftlinien gut leitenden, auf den Membranrand aufgesetzten Ringes.Signal horns are already known with the Mennbran on the edge. is clamped and is excited by an axially mounted electromagnet. Also membrane horns are known that are clamped only in the middle, with the trained as a pot magnet electromagnet acts on the edge of the membrane, be it directly or with the help of a special one that guides the lines of force well, ring placed on the edge of the membrane.
Der ersten Ausführung, mit am Rand eingespannter Memlhran, haftet .der Nachteil an, daß -die mögliche Schwingungsweite des M embranzentrums verhältnismäßig klein ist. Die zweite Ausführung hat den Nachteil, daß der Elektromagnet, welcher auf den Membranrand wirkt, den gleichen Durchmesser wie die Membran selbst hat und daher verhältnismäßig große Abmessungen annimmt.The first version, with the Memlhran clamped at the edge, adheres The disadvantage is that the possible oscillation range of the membrane center is proportionate is small. The second embodiment has the disadvantage that the electromagnet, which acts on the edge of the membrane, has the same diameter as the membrane itself and therefore assumes relatively large dimensions.
Diese Übelstände vermeidet die Erfindung, bei welcher von der Erscheinung Gebrauch gemacht wird, daß eine in der Mitte eingespannte Schallplatte an ihrem Rande in verhältnismäßig starke Schwingungen gerät, wenn sie zwischen Rand und Mitte angestoßen oder angezogen ,Zvird.The invention avoids these inconveniences, in which case of the phenomenon Use is made that a record clamped in the middle is attached to her The edge gets into relatively strong vibrations when it is between the edge and the center kicked or tightened, Zvird.
Diese Erscheinung gründet sich darauf, daß in den äußeren Teilen der Schailptatte Resonanzschwingungen entstehen, welche infolge der fortdauernden Angriffswirkung des Elektromagneten bis zur größtmöglichsten Höhe gesteigert -werden können, so weit, d'aß unter Umständen ein Materialbruch eintritt.This phenomenon is based on the fact that in the outer parts of the Schailptatte resonance vibrations arise, which as a result of the continuous attack effect of the electromagnet can be increased to the greatest possible height, so far, that a material breakage may occur.
Da .der Elektromagnet nur eine verhältnismäßig geringe Wirkung auszuüben hat und da sein Durchmesser erheblich kleiner als die Membran selbst ist, stellt sich diese Anordnung einfach und, billig.Because .the electromagnet exert only a relatively small effect and since its diameter is considerably smaller than the membrane itself this arrangement is simple and cheap.
In der Ab b. r bedeuten: a die in der Mitte eingespannte Membran, b den Polschuh, eines Ring- oder Topfmagneten, c die Wicklung des Magneten; dieselbe kann. mit Gleichstrom unter Zuhilfenahme eines Unterbrechers oder auch mit Wechselstrom erregt werden, 'd den Schalltrichter, dessen Teil e die Meinbran umschließt.In the ab b. r mean: a the membrane clamped in the middle, b the pole piece, a ring or pot magnet, c the winding of the magnet; same can. with direct current with the help of an interrupter or alternatively with alternating current be excited, 'd the bell, the part of which encloses the Meinbran.
Wie aus der Abbildung ersichtlich ist, bedarf .es nur einer verhältnismäßig geringen Zugkraft des Elektromagneten., um eine große Schwingungsweite des Mennbranrandes herbeizuführen. Der Durchmesser des Ringmagneten richtet sich nach dem Material, der Stärke und: dem Durchmesser der :Membran.As can be seen from the figure, only one is required proportionally low tensile force of the electromagnet. to a large oscillation range of the Mennbranrand bring about. The diameter of the ring magnet depends on the material the thickness and: the diameter of the: membrane.
Zur Verstärkung der Wirkung kann auf die dem Polschuh gegenüberliegende ringförmige Zone der Membran in an sich bekannter Weise ein Eisenring f gesetzt werden, wie dies beispielsweise -in Abb. 2 dargestellt ist; an Stelle dieses Ringes können auch ringförmig angeordnete Eisenstücke treten.To intensify the effect, the pole piece opposite the pole piece can be used annular zone of the membrane set an iron ring f in a manner known per se as shown for example in Fig. 2; in place of this ring pieces of iron arranged in a ring can also occur.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEK80927D DE374754C (en) | Signal horn with a centrally clamped membrane that is electromagnetically excited by a ring magnet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEK80927D DE374754C (en) | Signal horn with a centrally clamped membrane that is electromagnetically excited by a ring magnet |
Publications (1)
Publication Number | Publication Date |
---|---|
DE374754C true DE374754C (en) | 1923-04-27 |
Family
ID=7234007
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEK80927D Expired DE374754C (en) | Signal horn with a centrally clamped membrane that is electromagnetically excited by a ring magnet |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE374754C (en) |
-
0
- DE DEK80927D patent/DE374754C/en not_active Expired
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