GB287065A - Improvements in or relating to diaphragms more particularly for loud speakers and the like - Google Patents
Improvements in or relating to diaphragms more particularly for loud speakers and the likeInfo
- Publication number
- GB287065A GB287065A GB760628A GB760628A GB287065A GB 287065 A GB287065 A GB 287065A GB 760628 A GB760628 A GB 760628A GB 760628 A GB760628 A GB 760628A GB 287065 A GB287065 A GB 287065A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diaphragm
- conductor
- corrugation
- corrugations
- elastic
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
- H04R1/403—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers loud-speakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/06—Arranging circuit leads; Relieving strain on circuit leads
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/04—Plane diaphragms
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/04—Plane diaphragms
- H04R7/06—Plane diaphragms comprising a plurality of sections or layers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
- H04R9/046—Construction
- H04R9/047—Construction in which the windings of the moving coil lay in the same plane
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
- H04R9/063—Loudspeakers using a plurality of acoustic drivers
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Adornments (AREA)
Abstract
287,065. Siemens & Halske Akt.- Ges. March 12, 1927, [Convention date]. Diaphragms; loud-speakers; magnetic instruments. - A diaphragm for acoustic instruments comprises two or more rigid surfaces, each lying in the same plane hingedly connected together and to a stationary support. As shown in Fig. 2, two surfaces s<1>, s<2> stiffened by ribs or corrugations, which may be of rectangular cross-section, are connected together elastically, by a longitudinal corrugation w<2> which acts in the manner of a hinge and the surfaces are supported on a frame through the intermediary of the elastic corrugations w', w'. As applied to electromagnetic instruments, the - diaphragm is driven by armatures secured at points along the corrugation w<2>. In a modification, two flat surfaces connected together and supported by elastic material are used. Instead of stiffening the surfaces by corrugations &c., an additional layer of material may be employed. The diaphragm may be driven by a current conductor riveted or clamped to the diaphragm and' located in a magnetic field. As shown in Fig. 3, the corrugation w<2> clamps a conductor l which extends over the whole length of the diaphragm. In a modification, Fig 4, projections e<1>, e<2> on the bent portions of the surfaces s', s<2> forming the elastic joint are fitted together and bent so as to clamp the conductor l. Fig. 6 shows a further modification wherein a current carrying conductor l is placed around the central corrugation w<2> and a wire z which strengthens the diaphragm. In another arrangement, the conductor l is located inside a deep central corrugation and is held in position by cords &c. interlaced through slots in the corrugation. When the diaphragm is of metal., the conductor is insulated by paper, rubber, or a layer of oxide, and the diaphragm is provided with slots to eliminate eddy currents. Instead of a separate conductor, the central corrugation may act as the current-carrying conductor. Elastic threads &c. connected to the central corrugation and the supporting frame are provided to facilitate axial movement, which may be damped by the provision of an apertured air chamber on one side of the diaphragm. The rigidity of the partial surfaces of the diaphragm is such that the speed of wave propagation is approximately equal to the velocity of sound in air. Fig. 8 shows a loud-speaker comprising four diaphragms d<1> - - d<4> operated by electromagnets m<1> - - m<4>.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES0078780 | 1927-03-12 | ||
DES79599D DE484371C (en) | 1927-03-12 | 1927-05-07 | Membrane according to patent 482132 with a conductor attached to the middle part for the purpose of electrodynamic drive |
DES79598D DE518111C (en) | 1927-03-12 | 1927-05-07 | Arrangement for attaching current conductors to membranes |
Publications (1)
Publication Number | Publication Date |
---|---|
GB287065A true GB287065A (en) | 1929-01-31 |
Family
ID=27437544
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB760628A Expired GB287065A (en) | 1927-03-12 | 1928-03-12 | Improvements in or relating to diaphragms more particularly for loud speakers and the like |
GB1294328A Expired GB289888A (en) | 1927-03-12 | 1928-05-02 | Improvements in or relating to diaphragms more particularly for loud-speakers and the like |
GB1293328A Expired GB289887A (en) | 1927-03-12 | 1928-05-02 | Improvements in or relating to diaphragms more particularly for loud speakers and the like |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1294328A Expired GB289888A (en) | 1927-03-12 | 1928-05-02 | Improvements in or relating to diaphragms more particularly for loud-speakers and the like |
GB1293328A Expired GB289887A (en) | 1927-03-12 | 1928-05-02 | Improvements in or relating to diaphragms more particularly for loud speakers and the like |
Country Status (4)
Country | Link |
---|---|
DE (2) | DE484371C (en) |
FR (1) | FR650754A (en) |
GB (3) | GB287065A (en) |
NL (1) | NL22991C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008135221A1 (en) * | 2007-05-02 | 2008-11-13 | Mundorf Eb Gmbh | Membrane or membrane arrangement for an electrodynamic sound transducer, and loudspeaker comprising such a membrane or membrane arrangement |
RU2788343C1 (en) * | 2022-08-18 | 2023-01-17 | Ильдар Васимович Сафиуллин | Electrodynamic emitter |
WO2024039265A1 (en) * | 2022-08-18 | 2024-02-22 | Ильдар Васимович САФИУЛЛИН | Electrodynamic transducer |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3636278A (en) * | 1969-02-19 | 1972-01-18 | Heil Scient Lab Inc | Acoustic transducer with a diaphragm forming a plurality of adjacent narrow air spaces open only at one side with the open sides of adjacent air spaces alternatingly facing in opposite directions |
-
0
- NL NL22991D patent/NL22991C/xx active
-
1927
- 1927-05-07 DE DES79599D patent/DE484371C/en not_active Expired
- 1927-05-07 DE DES79598D patent/DE518111C/en not_active Expired
-
1928
- 1928-03-12 GB GB760628A patent/GB287065A/en not_active Expired
- 1928-03-12 FR FR650754D patent/FR650754A/en not_active Expired
- 1928-05-02 GB GB1294328A patent/GB289888A/en not_active Expired
- 1928-05-02 GB GB1293328A patent/GB289887A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008135221A1 (en) * | 2007-05-02 | 2008-11-13 | Mundorf Eb Gmbh | Membrane or membrane arrangement for an electrodynamic sound transducer, and loudspeaker comprising such a membrane or membrane arrangement |
US8208678B2 (en) | 2007-05-02 | 2012-06-26 | Mundorf Eb Gmbh | Membrane or membrane configuration for an electrodynamic sound transducer, and loudspeaker comprising such a membrane or membrane configuration |
RU2788343C1 (en) * | 2022-08-18 | 2023-01-17 | Ильдар Васимович Сафиуллин | Electrodynamic emitter |
WO2024039265A1 (en) * | 2022-08-18 | 2024-02-22 | Ильдар Васимович САФИУЛЛИН | Electrodynamic transducer |
Also Published As
Publication number | Publication date |
---|---|
FR650754A (en) | 1929-02-11 |
GB289887A (en) | 1929-08-02 |
GB289888A (en) | 1929-05-09 |
DE484371C (en) | 1929-10-14 |
DE518111C (en) | 1931-02-11 |
NL22991C (en) |
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