CN1121809C - Loudspeaker - Google Patents
Loudspeaker Download PDFInfo
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- CN1121809C CN1121809C CN 99114781 CN99114781A CN1121809C CN 1121809 C CN1121809 C CN 1121809C CN 99114781 CN99114781 CN 99114781 CN 99114781 A CN99114781 A CN 99114781A CN 1121809 C CN1121809 C CN 1121809C
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- voice coil
- loudspeaker voice
- coil loudspeaker
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- framework
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Abstract
The present invention relates to a loudspeaker. A group of permanent magnets are respectively installed on both sides of a flat plate, a corresponding flat plate is installed on the other pole surface of the permanent magnets, and thereby, not less than one pair of repellent magnets are formed. Not less than three magnetic gaps are formed by the circumference surface of a coaxially installed cylindrical magnetic body and the vertical circumference surface of the convexly extended flange of the repellent magnets. Voice coils are inserted in the magnetic gaps, the winding direction and the current direction of the voice coils are specified, and the voice coils generate electrodynamic force in the same direction at the same moment. When the loudspeaker is provided with a pair of repellent magnetic paths with holosymmetric magnetic performance, the resistance and the wiring mode of the voice coils are set, and the loudspeaker has a pure resistance loading characteristic.
Description
The present invention relates to loud speaker, particularly have the electrodynamic loudspeaker of a pair of or a pair of above repulsion type magnet, belong to the electroacoustic transducer field of electricity.
The present invention is making after revising on the basis of patent applications such as PCT/CN98/00306 that the inventor has proposed (WO99/31931) and CN99230877.1.
In the prior art, US-A-5371806 provides a kind of electrodynamic loudspeaker with a pair of repulsion type magnet, its major defect is: the permanent-magnet line that passes through voice coil loudspeaker voice coil is only limited to the airborne stray field in repulsion type magnet periphery position, the energy of permanent magnet does not obtain the utilization of fullest, and the efficient of loud speaker is very low.
First purpose of the present invention is the weak point that overcomes prior art, high-fidelity loudspeaker with a pair of or a pair of above repulsion type magnet and some kinds of different structure type is provided, promotes the efficient of loud speaker significantly and suit in various coil-moving speakers, hearing aids and earphone, to obtain general applying.
Second purpose of the present invention provide have a pair of or a pair of above repulsion type magnet, the high-fidelity loudspeaker of some kinds of different structure type and pure resistor load characteristic, promote the efficient of loud speaker significantly and suit in various coil-moving speakers, hearing aids and earphone, to obtain general applying.
The 3rd purpose of the present invention provide have a pair of or a pair of above repulsion type magnet, the high-fidelity loudspeaker of some kinds of different structure type and pure resistor load characteristic, promote the efficient of loud speaker significantly, vortex flow in the magnetic loop is obviously contained, the distortion factor further reduces and suit to obtain general applying in various coil-moving speakers, hearing aids and earphone.
The object of the present invention is achieved like this:
A kind of loud speaker, it is characterized in that: one group of permanent magnet that magnetizes and polarize at thickness direction is installed respectively on two side planes of the flat board of a magnetic material making, described permanent magnet has identical polarity in the side near described flat board, the flat board that a magnetic material is made is installed respectively again on the outer side plane of described permanent magnet, constitute a pair of or a pair of above repulsion type magnet thus, described coaxial mounted three or more flat boards have well-balanced antelabium of projection plane upper edge radial projection of identical projected area and more coaxial mounted a pair of or a pair of the above permanent magnet, its thickness and described flat board equate or are the some of described slab-thickness, constitute three or three the above magnetic gaps between the vertical side face with the vertical side face of the coaxial mounted cylinder shape magnetic of described repulsion type magnet and the radial projection antelabium of described flat board, in described magnetic gap, insert coaxial mounted voice coil loudspeaker voice coil, stipulate described voice coil loudspeaker voice coil around to and the sense of current of flowing through voice coil, make described voice coil loudspeaker voice coil produce unidirectional electric power F in same work moment; Described loud speaker has the repulsion type magnet and the repulsion type magnetic circuit of a pair of holohedral symmetry magnetic property on different axial heights, constitute three described magnetic gaps thus, inserts long-pending three voice coil loudspeaker voice coils that equate of conductive wire cross-section in described magnetic gap, as two voice coil loudspeaker voice coil W that are positioned at the outside
AAnd W
CLook from the vibrating diaphragm lateral direction and fashionablely to have inhour around to, a voice coil loudspeaker voice coil W placed in the middle
BMust have clockwise around to, vice versa, described voice coil loudspeaker voice coil W
ATail end Y
AWith described voice coil loudspeaker voice coil W
BHead end X
BSerial connection, described voice coil loudspeaker voice coil W
BTail end Y
BWith described voice coil loudspeaker voice coil W
CHead end X
CSerial connection, described voice coil loudspeaker voice coil W
CTail end Y
CAlong described speech coil framework vertical drawing and described voice coil loudspeaker voice coil W
AHead end X
AConstitute the pair of input terminals of described loud speaker, described voice coil loudspeaker voice coil W
AAnd W
CHas equal number of turn n
AAnd n
CWith the inductance value L that equates
AAnd L
C, set described voice coil loudspeaker voice coil W
BNumber of turn n
B=n
A+ n
CSet described voice coil loudspeaker voice coil W simultaneously
BThe inductance value absolute value | L
B|=| L
A|+| L
C|, described loud speaker is a loud speaker with pure resistor load characteristic; Described loud speaker has the repulsion type magnet and the repulsion type magnetic circuit of a pair of holohedral symmetry magnetic property on different axial heights, constitute three described magnetic gaps thus, in described magnetic gap, insert long-pending three voice coil loudspeaker voice coils that equate of conductive wire cross-section, as two described voice coil loudspeaker voice coil W that are positioned at the outside
A' and W
C' look from the vibrating diaphragm lateral direction and fashionablely to have inhour around to, a described voice coil loudspeaker voice coil W placed in the middle
B' must have clockwise around to, vice versa, at described voice coil loudspeaker voice coil W
B' 1/2 number of turn place be provided with a centre cap Y
B' and constitute described voice coil loudspeaker voice coil W thus
B1' and W
B2', described voice coil loudspeaker voice coil W
A' tail end Y
A' with described voice coil loudspeaker voice coil W
B1' head end X
B1' serial connection, described voice coil loudspeaker voice coil W
C' tail end Y
C' with described voice coil loudspeaker voice coil W
B2' head end X
B2' serial connection, described voice coil loudspeaker voice coil W
C' head end X
C' along described speech coil framework vertical drawing and described voice coil loudspeaker voice coil W
A' head end X
A' back and described voice coil loudspeaker voice coil W are connected in parallel
B1' and W
B2' public tail end Y
BThe pair of input terminals of the described loud speaker of ' formation, described voice coil loudspeaker voice coil W
A' and W
C' have an equal number of turn n
A' and n
C' and equal inductance value L
A' and L
C', described voice coil loudspeaker voice coil W
B1' and W
B2' have an equal number of turn n
B1' and n
B2' and equal inductance value L
B1' and L
B2', set the number of turn n of described voice coil loudspeaker voice coil
A'=n
C'=n
B1'=n
B2' and set the inductance value absolute value of described voice coil loudspeaker voice coil simultaneously | L
B1' |=| L
B2' |=| L
A' |=| L
C' |, described loud speaker is a loud speaker with pure resistor load characteristic.
The diameter of described cylinder shape magnetic is bigger than the diameter of described repulsion type magnet, described flat board is one and has the circular dull and stereotyped of central axis hole, described permanent magnet is the disk shape magnet with central axis hole, the axle center bottom part of described framework is provided with the inner concave platform of a rising, the axis part of described inner concave platform is provided with an axis hole, the securing member that mates a secondary non-magnet material making is fastened on described repulsion type magnet on the described inner concave platform face, perhaps utilize a convex column that is positioned at described inner concave platform over glaze heart position with the integrated die cast of described framework, described repulsion type magnet is sleeved on the described inner concave platform face, the filling binding agent stops described flat board or described permanent magnet to make center displacement and itself and described framework are connected to as a whole in the formed gap of central axis hole of described securing member or described convex column and described flat board and described permanent magnet, and the outer peripheral face of described cylinder shape magnetic is embedded in the recessed position medial surface of described framework and connects to as a whole with framework.The diameter of described cylinder shape magnetic is bigger than the diameter of described repulsion type magnet, described flat board is a circular flat board, described permanent magnet is a disk shape magnet, the axle center bottom part of described framework is provided with the inner concave platform of a rising, described repulsion type magnet inserts securing member that uniform non-magnet material makes and described flat board and described permanent magnet and described inner concave platform and described framework is connected to as a whole by bonding mode or on the radially evagination antelabium of described flat board, the outer peripheral face of described cylinder shape magnetic is embedded in the recessed position medial surface of described framework and connects to as a whole with framework.The diameter of described cylinder shape magnetic is littler than the diameter of described repulsion type magnet, described cylinder shape magnetic is put generation by a cylindric magnetic, described flat board is an annular flat board with central axis hole, the axle center bottom part of described framework is provided with the inner concave platform of a rising, the axis part of described inner concave platform is provided with an axis hole, the securing member that mates a secondary non-magnet material making is fastened on described cylinder shape magnetic or cylindric magnetic bonding on the described inner concave platform face, perhaps utilize a convex column that is positioned at described inner concave platform over glaze heart position with the integrated die cast of described framework, described cylinder shape magnetic is sleeved on the described inner concave platform face, the filling binding agent stops it to make center displacement and itself and described framework are connected to as a whole in the formed gap of central axis hole of described non magnetic securing member or described convex column and described cylinder shape magnetic, and the outer peripheral face of described repulsion type magnet is embedded in the recessed position medial surface of described framework and connects to as a whole with framework.
A kind of loud speaker, it is characterized in that: on two side planes of the flat board of a magnetic material making one group of column or cylinder shape rare earth metal binding type permanent magnet are installed respectively, described permanent magnet is polarized in the face of the vertical side face of radial projection antelabium that is positioned at outboard end magnetizes by the horizontal substrate near a described dull and stereotyped side and has identical polarity in the side near described flat board, constitute a pair of or a pair of above repulsion type magnet thus, radially protrude out a well-balanced antelabium with the projection plane of the more coaxial mounted two groups of described permanent magnet substrates of the coaxial mounted described flat board of described permanent magnet, its thickness and described flat board equate or are the some of described slab-thickness, three described antelabium that protrude out of described permanent magnet and described flat board have identical projected area, constitute three or three the above magnetic gaps between the vertical side face with the vertical side face of the coaxial mounted cylinder shape magnetic of described repulsion type magnet and the described radial projection antelabium of described flat board and described permanent magnet, in described magnetic gap, insert coaxial mounted voice coil loudspeaker voice coil, stipulate described voice coil loudspeaker voice coil around to and the sense of current of flowing through voice coil, make described voice coil loudspeaker voice coil produce unidirectional electric power F in same work moment; Described loud speaker has the repulsion type magnet and the repulsion type magnetic circuit of a pair of holohedral symmetry magnetic property on different axial heights, constitute three described magnetic gaps thus, inserts long-pending three voice coil loudspeaker voice coils that equate of conductive wire cross-section in described magnetic gap, as two voice coil loudspeaker voice coil W that are positioned at the outside
AAnd W
CLook from the vibrating diaphragm lateral direction and fashionablely to have inhour around to, a voice coil loudspeaker voice coil W placed in the middle
BMust have clockwise around to, vice versa, described voice coil loudspeaker voice coil W
ATail end Y
AWith described voice coil loudspeaker voice coil W
BHead end X
BSerial connection, described voice coil loudspeaker voice coil W
BTail end Y
BWith described voice coil loudspeaker voice coil W
CHead end X
CSerial connection, described voice coil loudspeaker voice coil W
CTail end Y
CAlong described speech coil framework vertical drawing and described voice coil loudspeaker voice coil W
AHead end X
AConstitute the pair of input terminals of described loud speaker, described voice coil loudspeaker voice coil W
AAnd W
CHas equal number of turn n
AAnd n
CWith the inductance value L that equates
AAnd L
C, set described voice coil loudspeaker voice coil W
BNumber of turn n
B=n
A+ n
CSet described voice coil loudspeaker voice coil W simultaneously
BThe inductance value absolute value | L
B|=| L
A|+| L
C|, described loud speaker is a loud speaker with pure resistor load characteristic; Described loud speaker has the repulsion type magnet and the repulsion type magnetic circuit of a pair of holohedral symmetry magnetic property on different axial heights, constitute three described magnetic gaps thus, in described magnetic gap, insert long-pending three voice coil loudspeaker voice coils that equate of conductive wire cross-section, as two described voice coil loudspeaker voice coil W that are positioned at the outside
A' and W
C' look from the vibrating diaphragm lateral direction and fashionablely to have inhour around to, a described voice coil loudspeaker voice coil W placed in the middle
B' must have clockwise around to, vice versa, at described voice coil loudspeaker voice coil W
B' 1/2 number of turn place be provided with a centre cap Y
B' and constitute described voice coil loudspeaker voice coil W thus
B1' and W
B2', described voice coil loudspeaker voice coil W
A' tail end Y
A' with described voice coil loudspeaker voice coil W
B1' head end X
B1' serial connection, described voice coil loudspeaker voice coil W
C' tail end Y
C' with described voice coil loudspeaker voice coil W
B2' head end X
B2' serial connection, described voice coil loudspeaker voice coil W
C' head end X
C' along described speech coil framework vertical drawing and described voice coil loudspeaker voice coil W
A' head end X
A' back and described voice coil loudspeaker voice coil W are connected in parallel
B1' and W
B2' public tail end Y
BThe pair of input terminals of the described loud speaker of ' formation, described voice coil loudspeaker voice coil W
A' and W
C' have an equal number of turn n
A' and n
C' and equal inductance value L
A' and L
C', described voice coil loudspeaker voice coil W
B1' and W
B2' have an equal number of turn n
B1' and n
B2' and equal inductance value L
B1' and L
B2', set the number of turn n of described voice coil loudspeaker voice coil
A'=n
C'=n
B1'=n
B2' and set the inductance value absolute value of described voice coil loudspeaker voice coil simultaneously | L
B1' |=| L
B2' |=| L
A' |=| L
C' |, described loud speaker is a loud speaker with pure resistor load characteristic.The diameter of described cylinder shape magnetic is bigger than the diameter of described repulsion type magnet, described flat board is one and has the circular dull and stereotyped of central axis hole, described permanent magnet is the column rare earth metal binding type magnet with central axis hole, the axle center bottom part of described framework is provided with the inner concave platform of a rising, the axis part of described inner concave platform is provided with an axis hole, the securing member that mates a secondary non-magnet material making is fastened on described repulsion type magnet on the described inner concave platform face, perhaps utilize a convex column that is positioned at described inner concave platform over glaze heart position with the integrated die cast of described framework, described repulsion type magnet is sleeved on the described inner concave platform face, the filling binding agent stops described flat board or described permanent magnet to make center displacement and itself and described framework are connected to as a whole in the formed gap of central axis hole of described securing member or described convex column and described flat board and described permanent magnet, and the outer peripheral face of described cylinder shape magnetic is embedded in the recessed position medial surface of described framework and connects to as a whole with framework.The diameter of described cylinder shape magnetic is bigger than the diameter of described repulsion type magnet, described flat board is a circular flat board, described permanent magnet is solid column rare earth metal binding type magnet, the axle center bottom part of described framework is provided with the inner concave platform of a rising, described repulsion type magnet connects to as a whole by bonding mode and described inner concave platform and described framework, the outer peripheral face of described cylinder shape magnetic is embedded in the recessed position medial surface of described framework and connects to as a whole with framework.The diameter of described cylinder shape magnetic is littler than the diameter of described repulsion type magnet, described cylinder shape magnetic is put generation by a cylindric magnetic, described flat board is an annular flat board, described permanent magnet is a cylinder shape rare earth metal binding type magnet, the axle center bottom part of described framework is provided with the inner concave platform of a rising, the axis part of described inner concave platform is provided with an axis hole, the securing member that mates a secondary non-magnet material making is fastened on described cylinder shape magnetic or cylindric magnetic bonding on the described inner concave platform face, perhaps utilize a convex column that is positioned at described inner concave platform over glaze heart position with the integrated die cast of described framework, described cylinder shape magnetic is sleeved on the described inner concave platform face, the filling binding agent stops described cylinder shape magnetic to make center displacement and itself and described framework are connected to as a whole in the formed gap of central axis hole of described non magnetic securing member or described convex column and described cylinder shape magnetic, and the outer peripheral face of described repulsion type magnet is embedded in the recessed position medial surface of described framework and connects to as a whole with framework.
A kind of loud speaker, it is characterized in that: the both side ends and the portion placed in the middle of one group of column or cylinder shape rare earth metal binding type permanent magnet are provided with three well-balanced radial projection antelabium, described three projected areas that protrude out antelabium equate and protrude out the vertical side face of antelabium by that of centre to protrude out the polarization of magnetizing of the vertical side face of antelabium to being positioned at two of both side ends, constitute a pair of or a pair of above repulsion type magnet thus, protrude out between the vertical side face of antelabium with the vertical side face of the coaxial mounted cylinder shape magnetic of described repulsion type magnet and described permanent magnet described and to constitute three or three the above magnetic gaps, in described magnetic gap, insert coaxial mounted voice coil loudspeaker voice coil, stipulate described voice coil loudspeaker voice coil around to and the sense of current of flowing through voice coil, make described voice coil loudspeaker voice coil produce unidirectional electric power F in same work moment; Described loud speaker has the repulsion type magnet and the repulsion type magnetic circuit of a pair of holohedral symmetry magnetic property on different axial heights, constitute three described magnetic gaps thus, inserts long-pending three voice coil loudspeaker voice coils that equate of conductive wire cross-section in described magnetic gap, as two voice coil loudspeaker voice coil W that are positioned at the outside
AAnd W
CLook from the vibrating diaphragm lateral direction and fashionablely to have inhour around to, a voice coil loudspeaker voice coil W placed in the middle
BMust have clockwise around to, vice versa, described voice coil loudspeaker voice coil W
ATail end Y
AWith described voice coil loudspeaker voice coil W
BHead end X
BSerial connection, described voice coil loudspeaker voice coil W
BTail end Y
BWith described voice coil loudspeaker voice coil W
CHead end X
CSerial connection, described voice coil loudspeaker voice coil W
CTail end Y
CAlong described speech coil framework vertical drawing and described voice coil loudspeaker voice coil W
AHead end X
AConstitute the pair of input terminals of described loud speaker, described voice coil loudspeaker voice coil W
AAnd W
CHas equal number of turn n
AAnd n
CWith the inductance value L that equates
AAnd L
C, set described voice coil loudspeaker voice coil W
BNumber of turn n
B=n
A+ n
CSet described voice coil loudspeaker voice coil W simultaneously
BThe inductance value absolute value | L
B|=| L
A|+| L
C|, described loud speaker is a loud speaker with pure resistor load characteristic; Described loud speaker has the repulsion type magnet and the repulsion type magnetic circuit of a pair of holohedral symmetry magnetic property on different axial heights, constitute three described magnetic gaps thus, in described magnetic gap, insert long-pending three voice coil loudspeaker voice coils that equate of conductive wire cross-section, as two described voice coil loudspeaker voice coil W that are positioned at the outside
A' and W
C' look from the vibrating diaphragm lateral direction and fashionablely to have inhour around to, a described voice coil loudspeaker voice coil W placed in the middle
B' must have clockwise around to, vice versa, at described voice coil loudspeaker voice coil W
B' 1/2 number of turn place be provided with a centre cap Y
B' and constitute described voice coil loudspeaker voice coil W thus
B1' and W
B2', described voice coil loudspeaker voice coil W
A' tail end Y
A' with described voice coil loudspeaker voice coil W
B1' head end X
B1' serial connection, described voice coil loudspeaker voice coil W
C' tail end Y
C' with described voice coil loudspeaker voice coil W
B2' head end X
B2' serial connection, described voice coil loudspeaker voice coil W
C' head end X
C' along described speech coil framework vertical drawing and described voice coil loudspeaker voice coil W
A' head end X
A' back and described voice coil loudspeaker voice coil W are connected in parallel
B1' and W
B2' public tail end Y
BThe pair of input terminals of the described loud speaker of ' formation, described voice coil loudspeaker voice coil W
A' and W
C' have an equal number of turn n
A' and n
C' and equal inductance value L
A' and L
C', described voice coil loudspeaker voice coil W
B1' and W
B2' have an equal number of turn n
B1' and n
B2' and equal inductance value L
B1' and L
B2', set the number of turn n of described voice coil loudspeaker voice coil
A'=n
C'=n
B1'=n
B2' and set the inductance value absolute value of described voice coil loudspeaker voice coil simultaneously | L
B1' |=| L
B2' |=| L
A' |=| L
C' |, described loud speaker is a loud speaker with pure resistor load characteristic.
The diameter of described cylinder shape magnetic is bigger than the diameter of described repulsion type magnet, described permanent magnet is one group of column rare earth metal binding type magnet with central axis hole, the axle center bottom part of described framework is provided with the inner concave platform of a rising, the axis part of described inner concave platform is provided with an axis hole, four securing members of joining a secondary non-magnet material making are fastened on described repulsion type magnet on the described inner concave platform face, perhaps utilize a convex column that is positioned at described inner concave platform over glaze heart position with the integrated die cast of described framework, described repulsion type magnet is sleeved on the described inner concave platform face, the filling binding agent stops described permanent magnet to make center displacement and itself and described framework are connected to as a whole in the formed gap of central axis hole of described securing member or described convex column and described permanent magnet, and the outer peripheral face of described cylinder shape magnetic is embedded in the recessed position medial surface of described framework and connects to as a whole with framework.The diameter of described cylinder shape magnetic is bigger than the diameter of described repulsion type magnet, described permanent magnet is solid column rare-earth bound type magnet, the axle center bottom part of described framework is provided with the inner concave platform of a rising, described repulsion type magnet connects to as a whole by bonding mode and described inner concave platform and described framework, the outer peripheral face of described cylinder shape magnetic is embedded in the recessed position medial surface of described framework and connects to as a whole with framework.The diameter of described cylinder shape magnetic is littler than the diameter of described repulsion type magnet, described cylinder shape magnetic is put generation by a cylindric magnetic, described permanent magnet is a cylinder shape rare earth metal binding type magnet, the axle center bottom part of described framework is provided with the inner concave platform of a rising, the axis part of described inner concave platform face is provided with an axis hole, the securing member that mates a secondary non-magnet material making is fastened on described cylinder shape magnetic or cylindric magnetic bonding on the described inner concave platform face, perhaps utilize a convex column that is positioned at described inner concave platform over glaze heart position with the integrated die cast of described framework, described cylinder shape magnetic is sleeved on the described inner concave platform face, the filling binding agent stops described cylinder shape magnetic to make center displacement and itself and described framework are connected to as a whole in the formed gap of central axis hole of described non magnetic securing member or described convex column and described cylinder shape magnetic, and the outer peripheral face of described repulsion type magnet is embedded in the recessed position medial surface of described framework and connects to as a whole with framework.
The diameter of described cylinder shape magnetic is littler than the diameter of described repulsion type magnet, described framework is a uncovered cylinder that non-magnetic conduction rigid material is made, axis part at the bottom of the cylinder is provided with the inner concave platform of a rising, which is provided with a central axis hole that penetrates, the central axis hole that described axis hole and bonding are positioned at the repulsion type magnet on the described inner concave platform face matches each other and forms an anti-phase duct of sound wave, described cylinder shape magnetic is embedded into the cylindric inwall mating surface of described framework and via the described annular flat table top bonding location that is arranged at the bottom of the cylinder, the uncovered position of described cylinder-shaped frame expands to a ring flange laterally, one embeds three described magnetic gaps of described magnetic circuit with traditional dull and stereotyped voice coil loudspeaker voice coil that will link into an integrated entity with it of annular insulation of ball top shape vibrating diaphragm or plate shaped vibrating diaphragm bonding coupling by the outside and by the annular flange that sets in advance on the outer side plane of described ring flange, groove or uniform column are located, and constitute the basic driver unit of a high pitch or Squawker thus; Described loud speaker has the repulsion type magnet and the repulsion type magnetic circuit of a pair of holohedral symmetry magnetic property on different axial heights, constitute three described magnetic gaps thus, inserts long-pending three voice coil loudspeaker voice coils that equate of conductive wire cross-section in described magnetic gap, as two voice coil loudspeaker voice coil W that are positioned at the outside
AAnd W
CLook from the vibrating diaphragm lateral direction and fashionablely to have inhour around to, a voice coil loudspeaker voice coil W placed in the middle
BMust have clockwise around to, vice versa, described voice coil loudspeaker voice coil W
ATail end Y
AWith described voice coil loudspeaker voice coil W
BHead end X
BSerial connection, described voice coil loudspeaker voice coil W
BTail end Y
BWith described voice coil loudspeaker voice coil W
CHead end X
CSerial connection, described voice coil loudspeaker voice coil W
CTail end Y
CAlong described speech coil framework vertical drawing and described voice coil loudspeaker voice coil W
AHead end X
AConstitute the pair of input terminals of described loud speaker, described voice coil loudspeaker voice coil W
AAnd W
CHas equal number of turn n
AAnd n
CWith the inductance value L that equates
AAnd L
C, set described voice coil loudspeaker voice coil W
BNumber of turn n
B=n
A+ n
CSet described voice coil loudspeaker voice coil W simultaneously
BThe inductance value absolute value | L
B|=| L
A|+| L
C|, described loud speaker is a loud speaker with pure resistor load characteristic; Described loud speaker has the repulsion type magnet and the repulsion type magnetic circuit of a pair of holohedral symmetry magnetic property on different axial heights, constitute three described magnetic gaps thus, in described magnetic gap, insert long-pending three voice coil loudspeaker voice coils that equate of conductive wire cross-section, as two described voice coil loudspeaker voice coil W that are positioned at the outside
A' and W
C' look from the vibrating diaphragm lateral direction and fashionablely to have inhour around to, a described voice coil loudspeaker voice coil W placed in the middle
B' must have clockwise around to, vice versa, at described voice coil loudspeaker voice coil W
B' 1/2 number of turn place be provided with a centre cap Y
B' and constitute described voice coil loudspeaker voice coil W thus
B1' and W
B2', described voice coil loudspeaker voice coil W
A' tail end Y
A' with described voice coil loudspeaker voice coil W
B1' head end X
B1' serial connection, described voice coil loudspeaker voice coil W
C' tail end Y
C' with described voice coil loudspeaker voice coil W
B2' head end X
B2' serial connection, described voice coil loudspeaker voice coil W
C' head end X
C' along described speech coil framework vertical drawing and described voice coil loudspeaker voice coil W
A' head end X
A' back and described voice coil loudspeaker voice coil W are connected in parallel
B1' and W
B2' public tail end Y
BThe pair of input terminals of the described loud speaker of ' formation, described voice coil loudspeaker voice coil W
A' and W
C' have an equal number of turn n
A' and n
C' and equal inductance value L
A' and L
C', described voice coil loudspeaker voice coil W
B1' and W
B2' have an equal number of turn n
B1' and n
B2' and equal inductance value L
B1' and L
B2', set the number of turn n of described voice coil loudspeaker voice coil
A'=n
C'=n
B1'=n
B2' and set the inductance value absolute value of described voice coil loudspeaker voice coil simultaneously | L
B1' |=| L
B2' |=| L
A' |=| L
C' |, described loud speaker is a loud speaker with pure resistor load characteristic.Described framework is put generation by another combined frame, described combined frame is combined by taper basin frame and end basin, described taper basin sets up the elastic damping plate bearing-surface that is distributed in the traditional vibrating diaphragm yoke circle bearing-surface on the different axial heights and is positioned at the speech coil framework upper end, the axle center bottom part of described taper basin frame is provided with a uncovered cylinder or similar structures, it is inboard and expand to a ring flange that outwards protrudes out at its substrate position that the inwall of described cylinder or similar structures constitutes the recessed position of described framework, the axis part of basin of the described end is provided with the inner concave platform of a rising, the uncovered position, upper end of basin of the described end expand to another ring flange of outwards protruding out and with the corresponding coupling of described ring flange of described taper basin frame, described inner concave platform becomes one by the concave shaped rib of radial equipartition and the described ring flange binding of basin of the described end, be provided with essential operating space and ventilation and heat passage between the vertical outer rim of rib and rib, described rib and the described ring flange junction that crosses also is provided with a ring-type Horizontal Branch bearing surface, the bottom elastic damping plate of the described loudspeaker voice coil skeleton of bonding on it, described taper basin frame and basin of the described end are by described a pair of ring flange installing and locating and connect to as a whole.
The present invention has following major advantage:
1, high sensitivity.When optimum state, the efficient of loud speaker can improve more than 10 times than traditional product.For example, the Hi-Fi loud speaker of 8 inches bores implemented according to the invention, its SPL value can be up to more than the 98dB/1w/1m.
2, high fidelity.Particularly adopted the loud speaker of the magnetic material of rare earth metal binding type magnet and high permeability, high resistivity.
3, the working temperature of the input power of loud speaker and voice coil loudspeaker voice coil descends significantly, the long-standing abuse that has overcome " power compression " phenomenon and burnt loud speaker easily.
4, can make " linearity " loud speaker with pure resistor load characteristic and be easy to reach large-scale production.
5, be a kind of high performance price ratio, energy-efficient, the high green product that lowers consumption.Can implement comprehensively to update to all kinds of electrodynamic loudspeakers, hearing aids, earphone and stereophone.
Accompanying drawing drawing explanation: Fig. 1. show the loud speaker sectional arrangement drawing of the embodiment of the invention 1.Fig. 2. show the loud speaker sectional arrangement drawing of the embodiment of the invention 2.Fig. 3. show the magnetic circuit of loudspeaker sectional arrangement drawing of the embodiment of the invention 3.Fig. 4. show the magnetic circuit of loudspeaker sectional arrangement drawing of the embodiment of the invention 4.Fig. 5. show the magnetic circuit of loudspeaker sectional arrangement drawing of the embodiment of the invention 5.Fig. 6. show the magnetic circuit of loudspeaker sectional arrangement drawing of the embodiment of the invention 6.Fig. 7 shows the magnetic circuit of loudspeaker sectional arrangement drawing of the embodiment of the invention 7.Fig. 8. show the loud speaker sectional arrangement drawing of the embodiment of the invention 8.Fig. 9. show the loud speaker sectional arrangement drawing of the embodiment of the invention 9.Figure 10. show the magnetic circuit of loudspeaker sectional arrangement drawing of the embodiment of the invention 10.Figure 11. show the magnetic circuit drawing in side sectional elevation of the embodiment of the invention 1.Figure 12. show the magnetic circuit drawing in side sectional elevation of the embodiment of the invention 2.Figure 13. show the magnetic circuit drawing in side sectional elevation of the embodiment of the invention 8.Figure 14. show the magnetic circuit drawing in side sectional elevation of the embodiment of the invention 10.Figure 15. show the embodiment of the invention 1 node A partial enlarged drawing.Figure 16. show the embodiment of the invention 7 (embodiment 10) Node B partial enlarged drawing.Figure 17. show magnetic structure and circuit theory winding diagram that the present invention has first embodiment of pure resistor load characteristic loud speaker.Figure 18. show magnetic structure and circuit theory winding diagram that the present invention has second embodiment of pure resistor load characteristic loud speaker.Figure 19. show the vertical section schematic diagram of combined frame embodiment of the present invention.Figure 20. show and utilize the schematic diagram of non-magnet material securing member among the loud speaker embodiment of the present invention described magnetic circuit inner core installing and locating.Figure 21. show the magnetic circuit of loudspeaker sectional arrangement drawing of the embodiment of the invention 11.Figure 22. show the loud speaker sectional arrangement drawing of the embodiment of the invention 12.Figure 23. show the loud speaker sectional arrangement drawing of the embodiment of the invention 13.Figure 24. show magnetic circuit of loudspeaker inner core of the present invention and adopt securing member to be installed in vertical section schematic diagram A on the framework inner concave platform.Figure 25. show magnetic circuit of loudspeaker inner core of the present invention and adopt securing member to be installed in vertical section schematic diagram B on the framework inner concave platform.
Main element of the present invention and label corresponding relation are as follows: 0101,101,201,301,401,701,801,901,1001,1101,1201,1501,1601,1701,1901---framework; 012,12,22,32,42,82,92,1002,1102,1202,1502,1602,1702,1902---permanent magnet; 012 ', 012 ", 12 ', 22 ', 32 ', 42 ', 82 ', 92 ', 1002 ', 1102 ', 1202 ', 1702 ', 1902 '---permanent magnet; 1200,1900---structure space; 1222---sound-absorbing material; 0110,013,13,23,33,43,83,93,1003,1103,1203,1703---flat board; 1763,1963---ring plate; 015,15,25,35,45,85,95,1005,1105,1205,1505,1605,1705,1905---dust cover; 016,16,26,36,46,86,96,1006,1106,1206,1506,1606,1906---vibrating diaphragm; 017,17,27,37,47,87,97,1017,1107,1207,1507,1607,1707,1907---speech coil framework; 018,18,28,38,48,88,98,1008,1108,1208,1508,1608---the elastic damping plate; 019,19,29,39,49,89,99,1009,1109,1209,1509,1609,1709,1909---voice coil loudspeaker voice coil; 0110,110,210,310,410,810,910,1010,1110,1210,1510,1610,1710,1910---magnetic gap; 0111,111,211,311,411,811,911,1011,1111,1211,1511,1611,1711,1911---the inner concave platform face; 212,412,812,1 112,1212,1612,1712,1912---the convex column; 0113,113,213,313,413,813,913,1013,1113,1213,1513,1613,1713,1913---the cylinder shape magnetic; 214,414,814,1114,1214,1614,1714,1914---central axis hole; 1119,2119---non-magnetic conduction securing member; 0130,130,230,330,430,930,1030,1130,1230,1930---radial projection antelabium (flat board); 001---binding agent; 1216---the annular insulation is dull and stereotyped; 217,1117---screw; 320,420,820,1120,1220,1520,1620,1720---radial projection antelabium (permanent magnet); 1215---the location column; 321,421,921,1121,1221,1521,1621,1721,321 ', 421 ', 921 ', 1521 ', 1621 ', 1721 '---permanent magnet horizontal substrate face; 1271---toroidal cavity; 1272---the annular flat surface; 0103,103,203,303,403,803,903,1033,1233,1503,1603,1703,1903---the recessed position of framework mating surface.
The present invention is further elaborated below with reference to accompanying drawing embodiment.
Fig. 1 shows the loud speaker sectional arrangement drawing of the embodiment of the invention 1.Cone type framework 101 employing aluminium alloys etc. have the hard material of enough rigidity to be made, and it is slightly cup-shaped below waist.The axle center bottom part of framework is provided with the inner concave platform of a rising, this inner concave platform face 111 be one with the symmetrically arranged horizontal plane of central axial line.The middle part of going up of framework is provided with a recessed position mating surface 103, and it is coaxial and intersect vertically with inner concave platform face 111.A magnetic material make circular dull and stereotyped 13
BCircular Nd-Fe-B permanent magnet 12 of central part installing and locating of a side plane, dull and stereotyped 13
BCircular Nd-Fe-B permanent magnet 12, two block permanent magnets of another piece of central part installing and locating on opposite side plane have identical projection plane, volume, magnetic property and magnetic energy product, and near dull and stereotyped 13
BA side have identical polar (the present invention is set at the N utmost point, also prolong without exception in the explanation of following examples with and no longer repeat), the outside of two block permanent magnets (being the S utmost point one side) be installing and locating circular dull and stereotyped 13 respectively again
AWith dull and stereotyped 13
C, dull and stereotyped 13
A, 13
CHave identical thickness and be dull and stereotyped 13
BHalf of thickness.Dull and stereotyped 13
A, 13
B, 13
CThe permanent magnet of installing with a pair of repulsion type 12 and 12 ' all adopt the adhesive bond closed assembly to become as a whole by than the magnetic circuit inner core that constitutes loud speaker, is positioned at this inner core bonding on the inner concave platform face 111 by binding agent again at last.To be cylinder shape magnetic 113 embed the recessed position mating surface 103 of framework from the lateral direction of framework with the outer core of magnetic circuit, and with described permanent magnet and described dull and stereotyped coaxial positioning after bonded dose bonding firmly.Because permanent magnet 12 and 12 ' diameter dull and stereotyped 13
A, 13
B, 13
CDiameter slightly smaller, so above-mentioned three flat boards form symmetrical three well-balanced radial projection antelabium 130 after installing and locating
A, 130
B, 130
C(sometimes, for the depth-width ratio that adapts to permanent magnet better and the long stroke designing requirement of the diaphragm of loudspeaker, described flat board only just forms essential radial projection antelabium, the and for example writing board shape shown in the embodiment of the invention 5, the embodiment 6 or similarly other shape in suitable axial height scope) the vertical outer peripheral face of above-mentioned three radial projection antelabium and three magnetic gaps 110 of the inner peripheral surface of coaxial mounted cylinder shape magnetic 113 formation
A, 110
B, 110
COwing on framework 101, be provided with the stop face that presets, as long as make the axial height and dull and stereotyped 130 of cylinder shape magnetic 113
A, 130
B, 130
CAnd permanent magnet 12,12 ' axial total height suitable, by foolproof positioning process and anchor clamps, the present invention just can control above-mentioned three magnetic gaps 110 easily
A, 110
B, 110
CObtain enough uniformitys at circumferencial direction.In three magnetic gaps, insert voice coil loudspeaker voice coil 19 respectively
A, 19
B, 19
C, they have same speech coil framework 17.Shown in Figure 15 node A of the present invention: a magnetic gap 110 placed in the middle
B, its permanent-magnet line direction serves as reasons dull and stereotyped 13
B Radial projection antelabium 130
BPass voice coil loudspeaker voice coil 19 from the left side
BBe divided into up and down two loops and then from voice coil loudspeaker voice coil 19 through cylinder shape magnetic 113 again
A, 19
CThe right side pass magnetic gap 110
A, 110
C, through two radial projection antelabium 130 that the outside is dull and stereotyped
A, 130
CAnd dull and stereotyped 13
A, 13
CBe back to permanent magnet 12 and 12 ' the N utmost point.According to the Lorentz force principle of electricity, the regulation voice coil loudspeaker voice coil around to and the sense of current of flowing through voice coil, make described three voice coil loudspeaker voice coils in described magnetic gap, produce unidirectional electric power F in a flash together what connect tone currents
A, F
B, F
CSuch as, fashionable from the outer side-looking of the diaphragm of loudspeaker, present embodiment can be stipulated voice coil loudspeaker voice coil 19
A, 19
CHas inhour around to, voice coil loudspeaker voice coil 19
BHave clockwise around to, the phase difference of two groups of voice coil loudspeaker voice coils be 180 degree phase angles (all embodiment of the present invention all as standard around to and no longer repeat specification), then with voice coil loudspeaker voice coil 19
A, 19
CAfter the series connection again with voice coil loudspeaker voice coil 19
BBe connected in parallel, the total inductance amount of voice coil loudspeaker voice coil is reduced a lot, the frequency of loud speaker---impedance response curve can become more smooth.For another example, can also be with voice coil loudspeaker voice coil 19
A, 19
B, 19
CAll being connected in parallel or showing fixed invention scheme according to claim 15 of the present invention or claim 16 connects described three voice coil loudspeaker voice coils, and the total inductance amount of loud speaker can be reduced to null value or near null value.Three shared speech coil frameworks 17 of voice coil loudspeaker voice coil, the top of this speech coil framework is connected with vibrating diaphragm 16, elastic damping plate 18 respectively, and the latter is bonded and fixed on the traditional ring-shaped bearing flat surface that described framework 101 provides with binding agent again.Because present embodiment has adopted a pair of repulsion type ndfeb magnet and has had three magnetic gaps and three voice coil loudspeaker voice coils, the electric power F=F of loud speaker
A+ F
B+ F
CSo,, the electro-acoustic conversion efficiency of loud speaker can significantly be promoted.For example, when loud speaker possessed 8 inches bores, true SPL value can reach more than the 98dB/1w/1m easily; When loud speaker possessed 15 inches bores, its SPL value can reach 102dB/1w/1m easily.
Fig. 2 shows the loud speaker sectional arrangement drawing of the embodiment of the invention 2.
The constitution principle of loud speaker main elements such as the relevant framework of present embodiment, permanent magnet, flat board, radial projection antelabium, cylinder shape magnetic, magnetic gap, voice coil loudspeaker voice coil, vibrating diaphragm, elastic damping plate, coaxial magnetic circuit, voice coil loudspeaker voice coil around to and the explanation of the connected mode of voice coil loudspeaker voice coil and operation principle and Fig. 1 embodiment 1 identical, present embodiment no longer gives repetition.Different with Fig. 1 is the flat board 23 of embodiment 2
A, 23
B, 23
CAnd ndfeb magnet 22 and 22 ' central part be equipped with an equal diameters or suitable central axis hole 214, be provided with the inner concave platform of a rising at the axle center of framework bottom part, this inner concave platform face 211 be one with the symmetrically arranged horizontal plane of central axial line, but a convex column 212 that intersects vertically with inner concave platform face 211 more to the inside swells at the axis position in the central, it is integrated molding when the die casting framework, the central axis hole 214 of its cross section and described platform and described permanent magnet is being slidingly matched of minim gap, by hot investment casting or follow-up mechanical processing technique, guarantee described convex column 212 outer peripheral faces and cylinder shape magnetic---the axiality of the recessed position of framework mating surface 203 and with the perpendicularity of inner concave platform face 211, therefore present embodiment can further be simplified the mounting process of loud speaker, need not to adopt special fixtures and directly assemble core inside and outside the magnetic circuit of loudspeaker, and once form three well-balanced magnetic gaps 210 of enough accuracy
A, 210
B, 210
CThe assembling mode of above-mentioned magnetic circuit of loudspeaker also has the another one embodiment: the aperture of the central axis hole of described flat board and described permanent magnet is suitably increased, when described flat board and described permanent magnet are inlaid on described convex column 212 and the described inner concave platform face 211, filling binding agent 001 in the formed gap of outer peripheral face of central axis hole 214 and convex column 212, its can stop on the one hand described flat board or permanent magnet to shear the binding agent of magnetic circuit loosening and unallowed magnetic circuit inner core center displacement takes place because of the expand horizontal direction tension force that produces of vortex flow heating, and the aspect can connect to described flat board and permanent magnet and described framework 201 as a whole again in addition.
Fig. 3 shows the magnetic circuit of loudspeaker sectional arrangement drawing of the embodiment of the invention 3.Embodiment 3 only carries out the complementarity explanation to the part that the inner core of described magnetic circuit of loudspeaker promptly relates to described flat board and described permanent magnet.About the constitution principle of loud speaker main elements such as framework, cylinder shape magnetic, magnetic gap, voice coil loudspeaker voice coil, vibrating diaphragm, elastic damping plate, coaxial magnetic circuit, voice coil loudspeaker voice coil around to and the explanation of the connected mode of voice coil loudspeaker voice coil and operation principle and Fig. 1 embodiment 1 identical, present embodiment 3 no longer gives repetition.As seen from Figure 3, embodiment 3 adopted a pair of repulsion type, be installed in dull and stereotyped 33
BThe neodymium iron boron binding type magnet 32 and 32 that is column structure of both sides ', each piece neodymium iron boron binding type magnet be equipped with the horizontal substrate face 321 or 321 of a circle ', in axial height H value, described permanent magnet is that contour cylinder and its projection plane equates that permanent magnet is provided with that protrude out laterally, well-balanced radial projection antelabium 320 when arriving H value height
A, 320
C, their vertical outer peripheral face is that the thickness of permanent magnet radial projection antelabium is dull and stereotyped 33 in principle
BHalf of thickness, dull and stereotyped 33
BRadial projection antelabium 330
BWith permanent magnet radial projection antelabium 320
A, 320
CHave equal projected area, constitute three described magnetic gaps of loud speaker between inner peripheral surface by the vertical outer peripheral face of above-mentioned three radial projection antelabium and coaxial mounted cylinder shape magnetic 313.Similar to Fig. 1, near a permanent magnet 32 of framework inboard ' this side plane with radial projection antelabium, will be by positioning process and anchor clamps by permanent magnet 32 and 32 ' and dull and stereotyped 33
BBonding being positioned on the described inner concave platform face 311 of magnetic circuit inner core that constitutes.Permanent magnet 32 and 32 ' by the horizontal basal surface 321 of column and 321 ' respectively is to being positioned at the radial projection antelabium 320 of described permanent magnet upper end
AWith 320
CThe polarization of magnetizing of vertical side face, constitute a pair of repulsion type magnet thus, the polarity that indicates as Fig. 3.This shows that compare with embodiment 1, embodiment 3 has cancelled the guiding flat board 13 of two permanent-magnet lines
AWith 13
C, played the good effect of lowering dispersion loss, reduction magnetic circuit of loudspeaker equivalent inductance, reducing vortex flow loss, minimizing phase distortion and harmonic distortion.Particularly: described dull and stereotyped 33
BWhen reaching coaxial mounted cylinder shape magnetic 313 as if the soft ferrite core of using high permeability, high resistivity instead or chilling amorphous alloy or chilling ultramicro-crystal alloy material, when the tone currents that flows through alternation in the voice coil loudspeaker voice coil particularly during the high audio electric current, the vortex flow that occurs in the magnetic circuit can obtain extremely significantly containing, has played reduction iron loss and raising on the one hand---the effect of sound conversion efficiency; Aspect in addition, the flatness of frequency---the pressure response curve particularly high-end part of audio frequency will be improved greatly, first-harmonic, high order harmonic component distortion and phase distortion also reduce thereupon significantly, move thereby make on the part-frequency point of diving in the medium-high frequency frequency response of loud speaker of the present invention, therefore can produce and have high output acoustic pressure, the very wide Hi-end level loud speaker of dynamic range.
Fig. 4 shows the magnetic circuit of loudspeaker sectional arrangement drawing of the embodiment of the invention 4.In order to simplify technology and anchor clamps.The rare earth metal binding type permanent magnet 42 and 42 of present embodiment ' and dull and stereotyped 43
BBe equipped with an equal diameters or suitable central axis hole 414, be provided with the inner concave platform of a rising at the axle center of framework 401 bottom part, this inner concave platform face 411 be one with the symmetrically arranged horizontal plane of central axial line, but a convex column 412 that intersects vertically with inner concave platform face 411 more to the inside swells at the axis position in the central, the central axis hole 414 of its cross section and described platform and permanent magnet is being slidingly matched of minim gap, by hot investment casting or follow-up mechanical processing technique, guarantee described convex column 412 outer peripheral faces and cylinder shape magnetic---the axiality of the recessed position of framework mating surface 403 and with the perpendicularity of inner concave platform face 411.The constitution principle of all the other main elements, coaxial magnetic circuit, voice coil loudspeaker voice coil about loud speaker around to and the explanation of the connected mode of voice coil loudspeaker voice coil and operation principle and the embodiment of the invention 1, embodiment 2, embodiment 3 identical and no longer give repetition.
Fig. 5 shows the magnetic circuit of loudspeaker sectional arrangement drawing of the embodiment of the invention 5.Embodiment 5 is flexible programs of the embodiment of the invention 1.At this moment, the inner core of magnetic circuit of loudspeaker is formed (equivalence is for a pair of) repulsion type magnet by two: wherein a pair of thin permanent magnet 92-2 and 92 '-2 difference installing and locating are described dull and stereotyped 93
BTwo side planes near the outside of described permanent magnet 92-1 and 92 '-1, the polar configurations of these two pairs of permanent magnets and Fig. 1 embodiment 1 are identical.Two flat boards 93 of difference installing and locating on the outer side plane of described permanent magnet 92-1 and 92 '-1, permanent magnet 92-2 and 92 '-2
A, 93
C, two described flat boards all have the inner side plane that is complementary with the outer side plane of described permanent magnet, at this time, and as seen from Figure 5: dull and stereotyped 93
A, 93
C Radial projection antelabium 930
A, 930
CAxial height be the some of dull and stereotyped gross thickness.In addition, just the same with the relevant explanation of the embodiment of the invention 1 about technical performances such as the geometry of described permanent magnet and described flat board, material requirements, present embodiment no longer gives repetition.The radial projection antelabium 930 of described two flat boards
A, 930
B, 930
CVertical outer peripheral face and the inner peripheral surface of coaxial mounted cylinder shape magnetic 913 between constitute three magnetic gaps 910 of loud speaker
A, 910
B, 910
C, the constitution principle of all the other main elements, coaxial magnetic circuit, voice coil loudspeaker voice coil about loud speaker around to and the circuit theory connected mode and the operation principle of voice coil loudspeaker voice coil then identical with the explanation of the embodiment of the invention 1, present embodiment no longer gives repetition.
Fig. 6 shows the another kind of flexible program of Fig. 1 embodiment 1.Different with Fig. 5 is: dull and stereotyped 93
BThe permanent magnet 92-1 and 92 ' the-1st of installing and locating on two side planes at central axial line position, a pair of thin repulsion type permanent magnet, and thick than the former near another of described permanent magnet 92-1 and 92 '-1 outside installing and locating to repulsion type permanent magnet 92-2 and 92 '-2.At this time, as seen from Figure 6: dull and stereotyped 93
A, 93
C Radial projection antelabium 930
A, 930
CAxial height be the some of dull and stereotyped gross thickness.In addition, present embodiment 6 is identical with other explanation of the embodiment of the invention 5.About the constitution principle of loud speaker main element, coaxial magnetic circuit, voice coil loudspeaker voice coil around to and the connected mode and the operation principle of voice coil loudspeaker voice coil then identical with the explanation of the embodiment of the invention 1, present embodiment no longer gives repetition.
Fig. 7 shows the magnetic circuit of loudspeaker sectional arrangement drawing of the embodiment of the invention 7.The reduced of cylinder shape magnetic 813, become a magnetic circuit of loudspeaker inner core with central axis hole 814, it both can adopt ferrite to make, also can make, can also make with chilling amorphous alloy with high permeability and high resistivity or chilling ultracrystallite (amorphous) alloy with electrical pure iron or other good magnetic conduction ferroalloy materials.When installing and locating, the central axis hole inner peripheral surface of described cylinder shape magnetic 813 is inlaid on the convex column 812 of inner concave platform face 811 of framework 801, and utilizes binding agent that the one end is bonded on the inner concave platform face 811.Between the central axis hole 814 of the outer peripheral face of convex column 812 and cylinder shape magnetic 813 in the formed gap filling binding agent stop cylinder shape magnetic 813 to make center displacement and connect to itself and framework 801 as a whole.Has a radial projection antelabium 820 with 1/2 axial height place of the coaxial mounted one group of cylinder shape rare earth metal binding type permanent magnet 82 of cylinder shape magnetic
B, two outboard end that are equivalent to above-mentioned cylinder shape magnetic 813 axial heights of this permanent magnet are respectively equipped with radial projection antelabium 820
A, 820
CAnd guarantee radial projection antelabium 820
BHorizontal center line axis x---the identical (H of axial height of x and two outer side planes of described cylinder shape permanent magnet 82
8=H
8).Three radial projection antelabium of described cylinder shape permanent magnet 82 have equal internal diameter and projection plane, and radial projection antelabium 820
A, 820
CAxial width equal radial projection antelabium 820
B1/2 of axial width.In the present embodiment, described cylinder shape permanent magnet 82 protrudes out antelabium 820 by that of centre
BVertical side face protrude out antelabium 820 to being positioned at two of both side ends
AWith 820
CThe polarization of magnetizing of vertical side face, constitute a pair of repulsion type magnet thus, its polarity such as Fig. 7 indicate.When the outside circumference of described cylinder shape permanent magnet 82 embed the framework inboard mating surfaces 803 in 801 recessed positions and with described framework connect to as a whole after, can be between the outer peripheral face of the vertical inner peripheral surface of three radial projection antelabium of cylinder shape permanent magnet 82 and cylinder shape magnetic 813 three well-balanced described magnetic gaps 810 of formation
A, 810
B, 810
CIn above-mentioned magnetic gap, insert the voice coil loudspeaker voice coil 89 of speech coil framework 87 and three independent coilings
A, 89
B, 89
C,, can make above-mentioned three voice coil loudspeaker voice coils produce unidirectional electric power F in same work moment according to Fig. 1 embodiment 1 described voice coil loudspeaker voice coil direction of winding and circuit theory wiring and operation principle.(F=F
A+ F
B+ F
C) undoubtedly, it is similar that the permanent-magnet line loop in the present embodiment magnetic gap and Figure 15 are indicated, but the direction of described permanent-magnet line is then just opposite, sees for details shown in Figure 16 Node B of the present invention.Remove in addition, about the constitution principle of loud speaker main element, coaxial magnetic circuit, voice coil loudspeaker voice coil around to and the explanation of the circuit theory connected mode of voice coil loudspeaker voice coil and the operation principle and the embodiment of the invention 1 identical, present embodiment no longer gives repetition.
Fig. 8 shows the loud speaker sectional arrangement drawing of the embodiment of the invention 8.The description of relevant frame structure can be referring to the related description of Fig. 1 embodiment 1.The axle center bottom part of cone type framework 1501 has the inner concave platform of a rising, this inner concave platform face 1511 be one with the symmetrically arranged horizontal plane of central axial line.Slightly cup-shaped below the waist of framework, the middle part of going up of cup is provided with a smooth and symmetrical recessed position mating surface 1503, and it is coaxial and intersect vertically with aforesaid inner concave platform face 1511.One group of column rare earth metal binding type permanent magnet 1502 is bonded on the described inner concave platform face 1511, and it has circular or orthohexagonal shape of cross section.On 1/2nd axial heights of this group column permanent magnet, be provided with a well-balanced radial projection antelabium 1520
B, be respectively equipped with two well-balanced radial projection antelabium 1520 again in two outboard end of permanent magnet 1502
A, 1520
C, the projected area of three radial projection antelabium equates, protrudes out antelabium 1520
A, 1520
CAxial width in principle for protruding out antelabium 1520
BHalf of thickness.The binding type permanent magnet is by that radial projection antelabium 1520 of centre
BVertical plane to be positioned at the outside two radially the evagination lip as 1520
A, 1520
CThe vertical plane polarization of magnetizing, constitute a pair of repulsion type magnet thus.Its polarity such as Fig. 8 indicate.The cylinder shape magnetic 1513 that ferrite iron core is made, its axial height in principle with the axial height of permanent magnet 1502 quite or equate.To embed the female position mating surface 1503 of framework by the outside with permanent magnet 1502 coaxial mounted cylinder shape magnetics 1513, can obtain by radial projection antelabium 1520
A, 1520
B, 1520
CThree well-balanced magnetic gaps 1510 that vertical outer peripheral face and cylinder shape magnetic 1513 inner peripheral surfaces are constituted
A, 1510
B, 1510
C, in magnetic gap, insert three coaxial mounted voice coil loudspeaker voice coils 1509
A, 1509
B, 1509
C, they have same speech coil framework 1507, three voice coil loudspeaker voice coils of regulation around to the sense of current of flowing through voice coil, above-mentioned three voice coil loudspeaker voice coils can produce unidirectional electric power F in the same work moment that imports tone currents.Because present embodiment has adopted rare earth metal binding type permanent magnet and has had the ferrite iron core making cylinder shape magnetic of high permeability high resistivity, when voice coil loudspeaker voice coil imports tone currents, the vortex flow that the magnetic line of force produced in the magnetic circuit and the equivalent inductance of magnetic circuit of loudspeaker will be more much smaller than the conventional loudspeakers with metal yoke, thereby the harmonic distortion of loud speaker and phase distortion are reduced significantly, the low side dive of acoustic pressure---frequency response curve, high-end also can going up dived and whole frequency---the acoustic pressure curve becomes more smoothly, and the dynamic range of loud speaker is obviously widened.Because present embodiment adopted a pair of repulsion type magnet and magnetic circuit, act on electric power on the vibrating diaphragm 1506 by the electric power linear superposition of three voice coil loudspeaker voice coils, i.e. F=F
A+ F
B+ F
CSo the present embodiment loud speaker both can obtain high sensitivity and fidelity, become Hi-end level loud speaker, and overcome conventional loudspeakers magnetic circuit inner core and issue thermal expansion in the vortex flow effect, shear binding agent loosening and the long-standing abuse of center displacement takes place.Remove in addition, the constitution principle of present embodiment 8 relevant loud speaker main element, coaxial magnetic circuit, voice coil loudspeaker voice coil around to and the identical and no longer repetition of the explanation of voice coil loudspeaker voice coil circuit theory connected mode and the operation principle and the embodiment of the invention 1.
Fig. 9 shows the loud speaker sectional arrangement drawing of the embodiment of the invention 9.As different from Example 8: the permanent magnet 1602 of present embodiment 9 is one group of column rare earth metal binding type magnet with central axis hole 1614.Permanent magnet central authorities axis hole as long as will magnetize after the polarization embeds on the interior convex column 1612 of the inner concave platform face 1611 that is arranged on framework 1601, promptly can obtain three well-balanced magnetic gaps 1610 by extremely simple mounting process
A, 1610
B, 1610
CExcept above-mentioned points, present embodiment 9 about the constitution principle of loud speaker main element, coaxial magnetic circuit, voice coil loudspeaker voice coil around to and the explanation of the electrical principle connected mode of voice coil loudspeaker voice coil and operation principle and the embodiment of the invention 1 and embodiment 8 identical and no longer give repetition.
Figure 10 shows the magnetic circuit of loudspeaker sectional arrangement drawing of the embodiment of the invention 10.On a side plane of a ring plate 1763 with rare earth metal binding type permanent magnet 1702 installing and locating that are cylinder shape, on the opposite side plane of ring plate 1763 again with another piece cylinder shape rare earth metal binding type permanent magnet 1702 ' installing and locating.Two block permanent magnets have same polarity near this side (being cylinder shape horizontal substrate face) of this ring-like flat board, and present embodiment 10 is set at N polarity.Ring plate 1763 has a large diameter central axis hole, and its inner rim forms a well-balanced radial projection antelabium 1720
BTwo block permanent magnets 1702 and 1702 ' outboard end protrude out two well-balanced radial projection antelabium 1720 to the central axial line direction
A, 1720
C, above-mentioned three protrude out antelabium 1720
A, 1720
B, 1720
CHas equal projected area.And permanent magnet 1702 and 1702 ' has identical projection plane, geometry magnetic property and magnetic energy product, and faces radial projection antelabium 1720 by the cylinder shape horizontal substrate of permanent magnet
A, 1720
BThe polarization of magnetizing of vertical inner peripheral surface, constitute a pair of repulsion type magnet thus, concrete polarity such as Figure 10 indicate.The magnetic 1713 of a cylinder shape has and permanent magnet 1702 and 1702 ' and the cross-sectional area (circle or regular hexagon) of ring plate 1763 coupling, to be entrenched on the inner concave platform face 1711 and convex column 1712 of framework 1701 with described permanent magnet 1702 and 1702 ' coaxial mounted cylinder shape magnetic 1713, and be bonded to the inner concave platform face 1711 of itself and framework as a whole.To be bonded to one again by permanent magnet 1702 and 1702 ' and the outer core of magnetic circuit that constitutes of ring plate 1763 embed the inboard mating surface 1703 in recessed position of framework and behind the location, be bonded to as a whole with described framework.Thus, at radial projection antelabium 1720
A, 1720
B, 1720
CVertical inner peripheral surface and the outer peripheral face of cylinder shape magnetic 1713 between constitute three well-balanced annular magnetic gaps (annular or regular hexagon annular), in above-mentioned magnetic gap, insert voice coil loudspeaker voice coil 1709
A, 1700
B, 1709
CWith speech coil framework 1707, regulation voice coil loudspeaker voice coil 1709
A, 1709
CAround to voice coil loudspeaker voice coil 1709
BAround the sense of current to opposite (180 ° of phase differences) and flowing through voice coil, when importing tone currents in the described voice coil loudspeaker voice coil, three voice coil loudspeaker voice coils same work moments behind the connection tone currents produces unidirectional electric power F in described magnetic gap
A, F
B, F
C, the electric power F=F of described loud speaker
A+ F
B+ F
CIf the cylinder shape magnetic adopts the soft ferrite core of high permeability, high resistivity to make, the loud speaker of present embodiment 8 will be equipped with Hi-end level high-fidelity and highly sensitive good characteristic simultaneously.Remove in addition, all the other of present embodiment 10 are partly identical with the explanation of the embodiment of the invention 1 and embodiment 8, and present embodiment no longer gives repetition.
Figure 11 shows the magnetic circuit drawing in side sectional elevation of the embodiment of the invention 1.(please consulting Fig. 1 simultaneously) this figure has listed three kinds of different execution modes.Figure 11 a has a solid circular permanent magnet 12, one circular dull and stereotyped 13
BAnd the radial projection antelabium of forming thus 130
B, with the inner peripheral surface of the coaxial mounted cylinder shape magnetic 113 of described permanent magnet with protrude out antelabium 130
BOuter peripheral face constitute annular magnetic gap 110
BFigure 11-b has a solid hexagon hydromagnetic iron 12, a regular hexagon flat board 13
BAnd the radial projection antelabium of forming thus 130
BThe top intersection of 120 ° of interior angles of described orthohexagonal permanent magnet and described regular hexagon flat board is provided with one section transition line with the symmetrical circular arc of interior angle angular bisector, with the inner peripheral surface of a cylinder shape magnetic 113 of coaxial installation of described permanent magnet and coupling with protrude out antelabium 130
BOuter peripheral face looping magnetic gap 110
BThe fan-shaped permanent magnet thin slice that Figure 11 C has four homalographics is assembled into the solid permanent magnet 12, a piece circular dull and stereotyped 13 of one group of equivalence
BAnd the radial projection antelabium of forming thus 130
B, with the inner peripheral surface of the coaxial mounted cylinder shape magnetic 113 of described permanent magnet with protrude out antelabium 130
BOuter peripheral face constitute annular magnetic gap 110
B
Figure 12 shows the magnetic circuit cross-sectional view of the embodiment of the invention 2.(please consulting Fig. 2 simultaneously) this figure has listed two kinds of different execution modes.Figure 12 a is provided with circular dull and stereotyped 23 of central axis hole 214 by the hollow type permanent magnet 22, that the fan shape permanent magnet of four homalographics, uniform thickness is assembled into one group of equivalence
BAnd the radial projection antelabium of forming thus 230
B, with the inner peripheral surface of the coaxial mounted cylinder shape magnetic 213 of described permanent magnet with protrude out antelabium 230
BOuter peripheral face constitute annular magnetic gap 210
BFigure 12 b has one group of regular hexagon permanent magnet that is provided with central axis hole 214 22, a regular hexagon flat board 23
BAnd the radially evagination lip level of forming thus 230
BThe top intersection of 120 ° of interior angles of described orthohexagonal permanent magnet and described regular hexagon flat board be provided with one section with the symmetrical circular arc transition line of interior angle angular bisector, with the inner peripheral surface of the coaxial mounted cylinder shape magnetic 213 of described permanent magnet with protrude out antelabium 230
BOuter peripheral face looping magnetic gap 210
B
Figure 13 shows the magnetic circuit drawing in side sectional elevation (seeing also Fig. 8) of the embodiment of the invention 8.This embodiment has listed two kinds of different execution modes.Figure 13 a has column permanent magnet 1,502 one group of circle, solid, forms radial projection antelabium 1520 thus
BWith annular magnetic gap 1510
B, with the inner peripheral surface and the radial projection antelabium 1520 of the coaxial mounted cylinder shape magnetic 1513 of described permanent magnet
BVertical outer peripheral face constitute described magnetic gap 1510
BFigure 13 b has solid, an orthohexagonal column permanent magnet 1502, forms radial projection antelabium 1502 thus
BWith regular hexagon magnetic gap 1510
B, with the inner peripheral surface and the radial projection antelabium 1520 of the coaxial mounted cylinder shape magnetic 1513 of described permanent magnet
BVertical outer peripheral face constitute described magnetic gap 1510
B
Figure 14 shows the magnetic circuit drawing in side sectional elevation (seeing also Figure 10) of the embodiment of the invention 10.Figure 14 has two groups of cylinder shape permanent magnets 1702 and permanent magnet 1702 ', a ring plate 1763, forms radial projection antelabium 1720 thus
BAnd annular magnetic gap 1710
BOuter peripheral face and radial projection antelabium 1720 with the coaxial mounted cylinder shape magnetic 1713 of described permanent magnet
BVertical inner peripheral surface constitute described magnetic gap 1710
B
Figure 15 shows the partial enlarged drawing of the embodiment of the invention 1 node A.(ask be example a) referring to Fig. 1, Figure 17 to Figure 15 simultaneously, described dull and stereotyped 13 of magnetic circuit of loudspeaker with embodiment 1
BThe permanent magnet N utmost point of one side is with the radial projection antelabium 130 of permanent-magnet line by described flat board
BPass through described magnetic gap 110 with direction from left to right
BAfter be divided into different axial heights two branch roads up and down flow into the cylinder shape magnetic 113 of described magnetic circuit, then to pass through described magnetic gap 110 from the right-to-left direction
A, 110
C, through described radial projection antelabium 130
A, 130
CAnd described dull and stereotyped 13
AWith 13
CBe back to permanent magnet 12 and 12 ' the N utmost point, want factor if ignore the edge effect grade of leakage flux and different magnetic gaps, can think that direction from left to right shown in Figure 15 passes through magnetic gap 110
BWith voice coil loudspeaker voice coil 19
BThe magnetic flux of middle magnetic circuit should equal this magnetic circuit and pass through magnetic gap 110 from right-to-left
A, 10
CWith voice coil loudspeaker voice coil 19
A, 19
CTwo the outside magnetic circuits the magnetic flux sum.Set thus described voice coil loudspeaker voice coil around to and flowing through voice coil in the sense of current, make in described voice coil loudspeaker voice coil the same work moment that imports tone currents the same direction of the electric power F that described voice coil loudspeaker voice coil produces: promptly for node A F=F in described magnetic gap
A+ F
B+ F
CUndoubtedly, all applicable node A partial enlarged drawing of magnetic circuit of the embodiment of the invention 2 to embodiment 6, embodiment 8, embodiment 9, embodiment 11 to embodiment 14.
Figure 16 shows the partial enlarged drawing of the embodiment of the invention 7 Node B.Compare with other embodiment magnetic circuit of loudspeaker of the present invention (asking for an interview Figure 15 node A partial enlarged drawing), described magnetic circuit, magnetic gap, voice coil loudspeaker voice coil, speech coil framework, voice coil loudspeaker voice coil are around just the same to the operation principle of, the voice coil loudspeaker voice coil electrical principle mode of connection and loud speaker.Node B just changes the outer core that is set to magnetic circuit with the described permanent magnet of node A from the inner core of magnetic circuit, in the magnetic circuit flow direction of permanent-magnet line then with the node A partial enlarged drawing shown in Figure 15, Figure 17 a, Figure 18 a in the permanent-magnet linear flow of magnetic circuit moving oppositely just opposite.This reason of base, in the voice coil loudspeaker voice coil electric current flow direction also just opposite (phase difference is 180 degree phase angles).Remove in addition, this figure is no longer given unnecessary details.Though Figure 10 embodiment 10 has adopted two groups of cylinder shape rare earth metal binding type permanent magnets and the magnetic circuit of loudspeaker that ring plate is formed, but major technique feature and this node B partial enlarged drawing of magnetic circuit are identical, and its corresponding explanation can be described no longer separately with reference to Ben Tu.
Figure 17 shows magnetic structure and the circuit theory winding diagram that the present invention has first kind of embodiment of pure resistor load characteristic loud speaker.The constitution principle of relevant magnetic structure and loud speaker main element label, coaxial magnetic circuit, the operation principle of loud speaker can be consulted the explanation of the embodiment of the invention 1 and no longer be given repetition.The present embodiment is applicable to all embodiment of the present invention.
The setting prerequisite that present embodiment has pure resistor load characteristic loud speaker is: have the major technique feature that the embodiment of the invention 1 is described: described loud speaker has pair of magnetic energy holohedral symmetry or is similar to holosymmetric repulsion type magnet, repulsion type magnetic circuit and three corresponding described magnetic gaps on different axial heights, inserts three coaxial mounted voice coil loudspeaker voice coils in described magnetic gap; The conductive wire cross-section of three voice coil loudspeaker voice coils is long-pending to be equated; Be positioned at two voice coil loudspeaker voice coil W in the outside
AAnd W
CLook from the lateral direction of the described diaphragm of loudspeaker and fashionablely to have inhour around to, voice coil loudspeaker voice coil W placed in the middle
BMust have clockwise around to, vice versa; Voice coil loudspeaker voice coil W
AAnd W
CEqual turn numbers be n
A=n
C, voice coil loudspeaker voice coil W
BNumber of turn n
B=n
A+ n
CVoice coil loudspeaker voice coil W
AAnd W
CInductance value L
AAnd L
CEquate and voice coil loudspeaker voice coil W
BThe inductance value absolute value | L
B|=| L
A|+| L
C|, i.e. voice coil loudspeaker voice coil W
AAnd W
CThe vector of the equiva lent impedance after being connected in series and voice coil loudspeaker voice coil W
BThe impedance vector equate and have 180 degree phase differences.
Figure 17 a shows the magnetic circuit figure of first kind of embodiment of the loud speaker with pure resistor load characteristic that meets above-mentioned setting prerequisite, and it is again the node A partial enlarged drawing of the embodiment of the invention 1.Be distributed in three magnetic gaps 110 on the different axial heights
A, 110
BWith 110
CIn insert three voice coil loudspeaker voice coil W respectively
A, W
BAnd W
CAnd a shared speech coil framework 17, constituting thus with axis x-x is the laterally zygomorphic repulsion type magnetic circuit of a pair of magnetic electricity performance of horizontal symmetry axis, for example: by the element 12N utmost point → 13
B→ 110
B→ W
B→ 113 → 110
A→ W
A→ 13
AThe last magnetic circuit that → 12S utmost point → 12N utmost point constitutes and by element 12 ' N utmost point → 13
B→ W
B→ 113 → 110
C→ W
C→ 13
CThe magnetic circuit magnetic resistance of the following magnetic circuit that → 12 ' S utmost point → 12 ' N utmost point constitutes equates; Dull and stereotyped 13
AAnd 13
CThickness equate and both gross thickness and dull and stereotyped 13
BThickness equate; Magnetic gap 110
AWith 110
BWith magnetic gap 110
CMagnetic induction density B
rValue is equal to each other; The direction of the permanent-magnet line in two groups of magnetic circuits as shown by arrows up and down: the cross-sectional area in the symmetrical magnetic circuits also equates and its magnetic flux up and down
1And
2Also equate.According to the Lorentz force principle of electricity, be positioned at two voice coil loudspeaker voice coil W in the outside
AAnd W
CIn direction of current flow be assumed to be when flowing to paper a voice coil loudspeaker voice coil W placed in the middle by the paper outside vertical
BIn direction of current flow then by the inboard vertical current of paper to the paper outside; Voice coil loudspeaker voice coil W
ATail end Y
AWith voice coil loudspeaker voice coil W
BHead end X
BSerial connection, voice coil loudspeaker voice coil W
BTail end Y
BWith voice coil loudspeaker voice coil W
CHead end X
CSerial connection, voice coil loudspeaker voice coil W
CTail end Y
CAlong the axial piece of described speech coil framework 17 or be embedded in vertical drawing and voice coil loudspeaker voice coil W in the interlayer of speech coil framework
AHead end X
AConstitute pair of input terminals such as Figure 17 of described loud speaker
bShown in.At this moment, the input tone currents is in a flash same on the loud speaker input terminal, three voice coil loudspeaker voice coil W
A, W
B, W
CHas unidirectional electric power F
A, F
B, F
CAs shown by arrows, the electric power F=F of described voice coil loudspeaker voice coil generation
A+ F
B+ F
CIf at terminal X
AWith terminal Y
CDuring the opposite signal of last input phase, electric power F=F
A+ F
B+ F
CEquation constant, but the direction of electric power F just with shown in Figure 17 a opposite promptly differ 180 the degree phase angles.
Figure 17 b shows the circuit theory winding diagram of described loud speaker.All can cancel out each other under any operating state of three voice coil loudspeaker voice coil circuit inductance amounts in the specific magnetic circuit of Figure 17 a.Thereby the loud speaker shown in Figure 17 a will have pure resistor load characteristic or approximate pure resistor load characteristic.Change the sentence language and say that according to loud speaker provided by the invention, its frequency---impedance response curve is a straight line when optimum state.Consider two outside magnetic gaps 110
AWith 110
CWith magnetic gap 110 placed in the middle
CHas the magnetic line of force edge effect that not exclusively equates, if adjustment is improper in practical engineering application, the load characteristic of above-mentioned loud speaker just may become the non-optimum state that is similar to the pure resistor load characteristic, its correspondent frequency---and the impedance response curve also may become a near linear.
In the present embodiment, if long-pending grade of the conductive wire cross-section of three described voice coil loudspeaker voice coils and other setting prerequisite of the present embodiment is still constant, at this moment voice coil loudspeaker voice coil W
BImpedance Z
BWith voice coil loudspeaker voice coil W
A, W
BImpedance Z
A, Z
CSum does not wait (Z
B≠ Z
A+ Z
C), because impedance Z
BVector and impedance Z
AAnd Z
CVector and the phase angle be not equal to 180 degree, the inductance value between them can not be offset fully, described loud speaker will not possess best pure resistor load characteristic.
Figure 18 shows magnetic structure and the circuit theory winding diagram that the present invention has second kind of embodiment of pure resistor load characteristic loud speaker.The operation principle of the label of relevant magnetic structure and loud speaker main element, the constitution principle of coaxial magnetic circuit, loud speaker can be consulted the explanation of Fig. 1 embodiment 1 and no longer be given repetition.The present embodiment is applicable to all embodiment of the present invention.
The setting prerequisite that present embodiment has pure resistor load characteristic loud speaker is: have the embodiment of the invention 1 described loud speaker major technique feature, described loud speaker has a pair of holohedral symmetry or is similar to the repulsion type magnet of holohedral symmetry magnetic property, repulsion type magnetic circuit and three described magnetic gaps on different axial heights, insert three coaxial mounted voice coil loudspeaker voice coils in described magnetic gap, the conductive wire cross-section of three voice coil loudspeaker voice coils of described loud speaker is long-pending to be equated; As two voice coil loudspeaker voice coil W that are positioned at the outside
A' and W
C' look from the lateral direction of the described diaphragm of loudspeaker and fashionablely to have inhour around to, voice coil loudspeaker voice coil W placed in the middle
B' must have clockwise around to, vice versa; Voice coil loudspeaker voice coil W
A' and W
C' have an equal number of turn n
A' and n
C' and equal inductance L
A' and L
C', voice coil loudspeaker voice coil W
B' be provided with a centre cap Y at 1/2 number of turn place
B' and constitute voice coil loudspeaker voice coil W thus
B1' and W
B2, they have equal number of turn n
B1' and n
B2' and equal inductance L
B1' and L
B2'; Stipulate described voice coil loudspeaker voice coil number of turn n
A'=n
C'=n
B1'=n
B2' and stipulate the inductance value absolute value of described voice coil loudspeaker voice coil simultaneously | L
B1' |=| L
B2' |=| L
A' |=| L
C|.
Figure 18 a shows the magnetic circuit figure of the second kind of embodiment with pure resistor load characteristic loud speaker that meets above-mentioned setting prerequisite, and it is again the node A partial enlarged drawing of the embodiment of the invention 1.Be distributed in three magnetic gaps 110 on the different axial heights
A, 110
BWith 110
CIn insert three voice coil loudspeaker voice coil W respectively
A', W
B' and W
C' and a shared speech coil framework 17, constituting thus with axis x '-x ' is the repulsion type magnetic circuit of two groups of magnetic electricity performance symmetries up and down of horizontal symmetry axis, for example: by the element 12N utmost point → 13
B→ 110
B→ W
B' → 113 → 110
A→ W
A' → 13
AThe last magnetic circuit that → 12S utmost point → 12N utmost point constitutes and by element 12 ' N utmost point → 13
B→ W
B' → 113 → 110
C→ W
C' → 13
CThe magnetic circuit magnetic resistance of the following magnetic circuit that → 12 ' S utmost point → 12 ' N utmost point constitutes equates; Dull and stereotyped 13
AAnd 13
CThickness equate and both gross thickness and dull and stereotyped 13
BThickness equate; Magnetic gap 110
A, 110
BWith 110
CMagnetic induction density B
rValue is equal to each other; The direction of the permanent-magnet line in two groups of magnetic circuits as shown by arrows up and down: the cross-sectional area in described two groups of symmetrical magnetic circuits up and down also equates and its magnetic flux
1And
2Also equate.According to the Lorentz force principle of electricity, be positioned at two voice coil loudspeaker voice coil W in the outside
A' and W
CWhen ' interior direction of current flow is assumed to be and flows to paper by the paper outside vertical, a voice coil loudspeaker voice coil W placed in the middle
BIn direction of current flow then by the inboard vertical current of paper to the paper outside.Voice coil loudspeaker voice coil W
A' tail end Y
A' with voice coil loudspeaker voice coil W
B1' head end X
B1' serial connection, voice coil loudspeaker voice coil W
B2' head end X
B2' with voice coil loudspeaker voice coil W
C' tail end Y
C' serial connection, voice coil loudspeaker voice coil W
A' head end X
A' with voice coil loudspeaker voice coil W
C' head end X
C' back and voice coil loudspeaker voice coil W are connected in parallel
B1' and W
B2' public tail end Y
B' constitute the pair of input terminals of described loud speaker shown in Figure 18 b.The explanation of the implementation method of voice coil loudspeaker voice coil vertical leads and Figure 17 a is identical.At this moment, if on the loud speaker input terminal, import the same work moment of tone currents, three voice coil loudspeaker voice coil W
A', W
B', W
C' have a unidirectional electric power F
A, F
B, F
CAs shown by arrows, promptly act on electric power F=F on the vibrating diaphragm
A+ F
B+ F
CWhen the input signal phase place of loud speaker is opposite, electric power F=F
A+ F
B+ F
CEquation constant, but the direction of electric power F just with the diagram opposite promptly differ 180 the degree phase angles.
Figure 18 b shows the circuit theory winding diagram of described loud speaker.All can cancel out each other under any operating state of the inductance value of three voice coil loudspeaker voice coils in the specific magnetic circuit shown in Figure 18 a.Thereby the loud speaker shown in Figure 18 will have pure resistor load characteristic or approximate pure resistor load characteristic, and the explanation of the effect that is produced and Figure 17 embodiment is identical.The consequence that has different magnetic line of force edge effects as for outside magnetic gap and magnetic gap placed in the middle also can be referring to the related description of Figure 17 b.
Figure 19 shows combined frame embodiment sectional arrangement drawing of the present invention.When the diameter of loudspeaker voice coil of the present invention when the diameter of big (for example reaching more than the φ 75mm) and voice coil loudspeaker voice coil grow (for example loud speaker has a pair of above repulsion type magnet) or loud speaker and is pressed ultra-long-stroke and design, for the axial motion stability that increases described voice coil loudspeaker voice coil and prevent " wiping circle " fault, aforementioned speaker frame can be put generation by another combined frame.Described combined frame 1001 is by taper basin frame 1001
BAnd end basin 1001
AAssembly.Basin frame 1001
BBe provided with the ring-shaped bearing plane of the bonding tradition vibrating diaphragm 1006 yoke circles that are distributed on the different axial heights and the ring-shaped bearing plane of the traditional bonding elastic damping plate 1008 that is positioned at described loudspeaker voice coil skeleton 1017 upper ends, basin frame 1001
BThe axle center bottom part be provided with a uncovered cylinder or similar structures, the inwall of described cylinder constitutes the inboard mating surface 1003 in the female position of described combined frame 1001 and expands to a ring flange that outwards protrudes out, end basin 1001 at its substrate position
AThe axle center bottom part also be provided with the inner concave platform face 1011 of a rising.On suitable axial height, end basin 1001
AUncovered position, upper end expand to another ring flange of outwards protruding out and with framework 1001
BImpossible joining of described ring flange.Described inner concave platform passes through concave shaped rib 1099 and end basin 1001 radially
ADescribed ring flange be cast as one, concave shaped rib 1099 is distributed on the circular flat of basin of the described end and described inner concave platform, is provided with enough air gaps between the outer rim of rib and rib and provides essential operating space with the ventilation and heat condition of improving voice coil loudspeaker voice coil and at bonding speech coil framework 1017 and 1008 ' time of bottom elastic damping plate.Concave shaped rib 1099 and end basin 1001
ARing flange intersection also be provided with a ring-type Horizontal Branch bearing surface 1053, on it the bonding described loudspeaker voice coil skeleton 1017 bottom elastic damping plate 1008 '.Basin frame 1001
BWith end basin 1001
ABecome a integral body by above-mentioned a pair of ring flange installing and locating and binding with enough rigidity.Because loud speaker of the present invention has high sensitivity and output acoustic pressure, the transient response speed that the technical scheme of two elastic damping plates also helps to increase essential damping coefficient and improves the diaphragm of loudspeaker about being provided with.Undoubtedly, the embodiment of basin of the relevant end of present embodiment, inner concave platform, concave shaped rib goes for the described frame structure of various embodiment of the present invention equally.
Figure 20 shows loud speaker utilization of the present invention and is distributed on non-magnet material securing member on the described flat board with the schematic diagram of described magnetic circuit inner core installing and locating.By the embodiment of the invention 1, embodiment 2, embodiment 5, embodiment 6, embodiment 11, embodiment 13 and 14 as seen, the described magnetic circuit inner core of the described loud speaker that constitutes by three or more described flat boards and a pair of or a pair of above repulsion type magnet, except that the adhesive method that the present invention has described, can also adopt some groups be distributed on that described flat board protrudes out securing member 151 that the non-magnet material on the antelabium plane makes and in the way of setting up the screw 152 that matches on the inner concave platform of described speaker frame 101 with above-mentioned magnetic circuit inner core installing and locating (protruding out of described flat board is equipped with uniform hole on the antelabium plane, the present invention omits and do not paint).For simplicity, the listed magnetic circuit element label of this figure is an example with embodiment 1 only.Equally, the magnetic circuit inner core installation method of other various similar embodiment can be implemented according to this figure explanation.
Figure 21. show the magnetic circuit of loudspeaker sectional arrangement drawing of the embodiment of the invention 11.This is an exemplary embodiments with a pair of above repulsion type magnet and a pair of above repulsion type magnetic circuit provided by the invention.For asking for simplicity, all constitution principles that relates to general speaker element such as framework, elastic damping plate, dust cover, vibrating diaphragm, coaxial magnetic circuit, voice coil loudspeaker voice coil around to the related description that can consult Fig. 1 embodiment 1 of the present invention with the operation principle of loud speaker, present embodiment no longer gives repetition.This figure only shows the magnetic circuit part of embodiment 11.Dull and stereotyped 013
BTwo side planes on respectively a pair of permanent magnet 012 of installing and locating ', 012 ", two flat boards 013 are installed respectively on the outer side plane of this a pair of permanent magnet
CWith 013
A, again dull and stereotyped 013
AOuter side plane on a block permanent magnet 012 is installed, one flat plate 013 is installed on the outer side plane of permanent magnet 012 again then
D, described coaxial mounted four flat boards 013
D, 013
A, 013
B, 013
CHave identical projected area and more coaxial mounted three blocks of described permanent magnets 012,012 ", 012 ' projection plane outwards protrude out four well-balanced antelabium 0130 that protrude out
D, 0130
A, 0130
B, 0130
CTwo placed in the middle dull and stereotyped 013
AWith 013
BAxial width be equal to each other two outsides dull and stereotyped 013
DWith 013
CAxial width be equal to each other, the thickness of outside flat board is 1/2 value of slab-thickness placed in the middle.The described permanent magnet of axial charging polarization is near dull and stereotyped 013
AWith 013
BAn adjacent side have identical polarity, constitute three groups of repulsion type magnet and three groups of repulsion type magnetic circuits thus.Constitute four magnetic gaps 0110 between the outer peripheral face of the inner peripheral surface of and above-mentioned flat board and the coaxial mounted cylinder shape magnetic 0113 of above-mentioned permanent magnet and four radial projection antelabium of above-mentioned four flat boards
D, 0110
A, 0110
BWith 0110
C, in described four magnetic gaps, insert coaxial mounted four voice coil loudspeaker voice coils 019
D, 019
A, 019
BWith 019
C, the regulation voice coil loudspeaker voice coil around to for example voice coil loudspeaker voice coil 019
AWith 019
CFor inhour around to voice coil loudspeaker voice coil 019
DWith 019
BFor clockwise around to, then constitute the pair of input terminals of described loud speaker if above-mentioned four voice coil loudspeaker voice coils all are connected in parallel, when importing tone currents on the input terminal, each voice coil loudspeaker voice coil produces unidirectional electric power F=F in same work moment
A+ F
B+ F
C+ F
DThis figure has indicated the polarity and the permanent-magnet line of three groups of repulsion type magnetic circuits
1,
2,
3Shown in the arrow among the figure, simultaneously marked and drawed direction of current flow in four voice coil loudspeaker voice coils again at the flow direction in the magnetic circuit shown in this figure right side.Obviously, the local magnetic circuit figure that mark and draw Figure 21 right side is consistent with figure embodiment node A of the present invention, Figure 17 a and Figure 18 a, is the present embodiment of promoting mutual understanding, and please consults these existing related description simultaneously.If the permanent magnet in the present embodiment is defined as disk shape sintering type Nd iron boron magnet, be applied to simultaneously in the loud speaker of small-bore (for example 3～5 inches bores): because the physical dimension of this type of magnet is very little, but price is than alnico magnet considerably cheaper, so, can produce the very high and very small and exquisite loud speaker with high output acoustic pressure of volume of the ratio of performance to price, its SPL value is easy to reach 90～92dB/1w/1m.
Figure 22 shows the loud speaker sectional arrangement drawing of the embodiment of the invention 12.The constitution principle of loud speaker main elements such as the relevant framework of present embodiment, permanent magnet, flat board, radial projection antelabium, cylinder shape magnetic, magnetic gap, voice coil loudspeaker voice coil, vibrating diaphragm, elastic damping plate, coaxial magnetic circuit, voice coil loudspeaker voice coil around to and the explanation of the connected mode of voice coil loudspeaker voice coil and the operation principle and the embodiment of the invention 1 identical, present embodiment no longer gives repetition.Different with the embodiment of the invention 1 is, the diameter of the described cylinder shape magnetic of present embodiment is littler than described repulsion type magnet, and its utilizes the described convex column with the integrated die cast of described framework to be sleeved on the described inner concave platform face.Details can be referring to the relevant explanation of the embodiment of the invention 2.In order to increase the installation stability of cylinder shape magnetic, can filling binding agent 001 in the gap between the outer peripheral face of its central axis hole 1914 and described convex column prevent described cylinder shape magnetic 1913 center displacements and influence the uniformity of described magnetic gap.Even under the situation that physical dimension allows, described cylinder shape magnetic 1913 can also for example can be implemented with reference to the mode of Figure 25 sign by solid magnetic (for example ferrite core) generation of putting that is bonded on the inner concave platform face.In the present embodiment, the outer core of magnetic circuit is by ring plate 1963
A, 1963
B, 1963
CWith a pair of repulsion type magnet of permanent magnet 1902,1902 ' formation, described permanent magnet is the ferrite toroidal magnet that a pair of physical dimension, projection plane, magnetic property, magnetic energy product equate.Adopt the adhesive bond closed assembly to become as a whole between permanent magnet and the flat board, by binding agent the outer core of this magnetic circuit is embedded the recessed position mating surface 1903 of framework, the one flat plate 1963 that repulsion type magnet is the most inboard from the lateral direction of framework again at last
CAlso fixing with inner concave platform face 1911 bondings.Remainder can be implemented and no longer be repeated with reference to other embodiments of the invention.Three voice coil loudspeaker voice coils can be connected in parallel together simply, and at this moment the total inductance amount of loud speaker will be reduced to below 1/3 of conventional loudspeakers, and it is more smooth that the acoustic pressure of loud speaker---frequency response curve can become, and the fidelity of loud speaker will be better than conventional loudspeakers.Certainly, also can implement to obtain a kind of loud speaker that has the pure resistor load characteristic or be similar to the pure resistor load characteristic with reference to one of two kinds of schemes shown in Figure 17 of the present invention or Figure 18.
Figure 23. show the loud speaker sectional arrangement drawing of the embodiment of the invention 13.Figure 23 a shows the construction profile of a ball top vibrating diaphragm high pitch loudspeaker.The diameter of described loud speaker cylinder shape magnetic is bigger than the diameter of repulsion type magnet, and has the magnetic circuit inner core that a pair of repulsion type magnet constitutes.Different with the framework of traditional round cone loudspeaker, Hi-Fi high pitch loudspeaker, present embodiment provides a kind of new loud speaker whole structural scheme.Framework 1201 is uncovered cylinders that adopt injection moulding of non-magnetic conduction rigid material or die cast, be provided with the inner concave platform 1201-2 of a rising at the tube lower shaft heart position of cylinder, the axis part of inner concave platform is provided with a central axis hole 1214 again, bottom near the cylinder of inner concave platform radial outer periphery is provided with a toroidal cavity 1271, and the radial outer periphery of groove is the annular flat surface 1272 of a rising.The uncovered position of cylindric framework is provided with an abducent ring flange 1201-1, ring flange is provided with uniform installation screw 1273, and the axial height of the outer side plane of annular table top 1272 and ring flange and the axial height of loud speaker repulsion type magnet and cylinder shape magnetic match each other.By permanent magnet 1202 with dull and stereotyped the 1203 magnetic circuit inner cores of forming are bonded is positioned on the inner concave platform face 1211, cylinder shape magnetic 1213 embeds the cylinder inwall mating surface 1233 of cylindric framework by lateral direction and is located by annular flat surface 1272 bondings.Ball top vibrating diaphragm 1206 can be bonded together by two elements with speech coil framework 1207, also can adopt titanium, the disposable punch forming of aluminum.Inner edge at the intersection of ball top vibrating diaphragm and speech coil framework bonding annular elastic damping plate 1208, and the outer rim 1208 of damping sheet ' bonding with an annulus insulation dull and stereotyped 1216, the lead-in wire of voice coil loudspeaker voice coil and the setting of lead-out terminal and previous embodiment of the present invention (for example Figure 17,18 and explanation) and the traditional handicraft of existing Dome loudspeaker identical, present embodiment no longer repeats.Embed three described magnetic gaps of described loud speaker from the outside by vibrating diaphragm, voice coil loudspeaker voice coil and speech coil framework, elastic damping plate, lead-out terminal and the dull and stereotyped integrated apparatus that constitutes of annular insulation, the inner side plane and the outer side plane tight connecting of framework ring flange 1201-1 of annular insulation dull and stereotyped 1216 rely on to be arranged on ring flange 1201-1 the annular flange on the side plane, groove or uniform 1215 pairs of voice coil loudspeaker voice coils of location column and the axial height of described magnetic gap and the concentricity of voice coil loudspeaker voice coil and magnetic gap are located simultaneously outward simultaneously.For simplicity, a traditional annular pressing plate that covers on the insulation flat board omits in Figure 23 a and does not paint.Harmful reflection for the ball top vibrating diaphragm medial surface sound wave that diminishes is bonded with foam sound-absorbing material 1222 on the outermost plane of repulsion type magnet.In addition, can also be provided with one at the axis part of repulsion type magnet and penetrate the central axis hole that axis hole 1214 matches each other, constitute the anti-phase duct of sound wave of described loud speaker or the noise elimination sound-absorbing passage of middle pitch Dome loudspeaker with cylindric framework tube bottom.
Figure 23 b shows the plane projection schematic diagram of the cylindric framework of Dome loudspeaker.Undoubtedly: 13 of embodiment have provided the organization plan that a kind of ball is risen the basic driver unit of sound or Squawker.As long as described speaker frame profile is developed slightly, present embodiment can be used as the loudspeaker drive unit in earphone, the high-fidelity headphone equally on this basis.If ball top vibrating diaphragm is replaced by plate diaphragm, then present embodiment can provide the driver element of a new panel speaker.
Speaker frame organization plan shown in Figure 23 also goes for claim 1 of the present invention, 5,9 defineds and suitable various embodiment.
Figure 24 shows magnetic circuit of loudspeaker inner core of the present invention and adopts securing member to be installed in vertical section schematic diagram A on the framework inner concave platform.The central part of described inner concave platform is provided with axis hole 214, the securing member 2119 that non-magnet material is made by one flat plate 2119 ' and a convex column that intersects vertically with described flat board form.Flat board 2119 ' be provided with the uniform hole of symmetry, the described convex plane of framework 201 is provided with corresponding screw, through using screw or rivet 217 after the adjustment described securing member is bonded and fixed on the described inner concave platform.In addition, with the fixing related description that can consult Fig. 2 embodiment 2 of the present invention of the binding of magnetic circuit inner core.
Figure 25 shows magnetic circuit of loudspeaker inner core of the present invention and adopts securing member to be installed in vertical section schematic diagram B on the framework inner concave platform.The fabrication and installation of securing member 1119 are identical with the explanation of Figure 24.But the magnetic circuit inner core of installing and locating on the inner concave platform of the described framework 1101 of loud speaker be a cylindric magnetic 1113 ', specifically can consult aforementioned related description of the present invention.
In sum, the present invention can't enumerate out one by one with all embodiment, but, no matter how they rearrange combination even make such or such local modification, their general technical design and invention core content but can't surmount whole coverages that claim of the present invention has proposed.
Claims (14)
1, a kind of loud speaker, comprise magnetic circuit and link the all-in-one-piece framework with it, the speech coil framework that is installed in interior vibrating diaphragm of this framework and elastic damping plate and is attached thereto, wound in parallel lead insulated from each other also constitutes the voice coil loudspeaker voice coil that inserts the magnetic circuit magnetic gap on it, it is characterized in that: one group of permanent magnet that magnetizes and polarize at thickness direction is installed respectively on two side planes of the flat board of a magnetic material making, described permanent magnet has identical polarity in the side near described flat board, the flat board that a magnetic material is made is installed respectively again on the outer side plane of described permanent magnet, constitute a pair of or a pair of above repulsion type magnet thus, described coaxial mounted three or more flat boards have well-balanced antelabium of projection plane upper edge radial projection of identical projected area and more coaxial mounted a pair of or a pair of the above permanent magnet, its thickness and described flat board equate or are the some of described slab-thickness, constitute three or three the above magnetic gaps between the vertical side face with the vertical side face of the coaxial mounted cylinder shape magnetic of described repulsion type magnet and the radial projection antelabium of described flat board, in described magnetic gap, insert coaxial mounted voice coil loudspeaker voice coil, stipulate described voice coil loudspeaker voice coil around to and the sense of current of flowing through voice coil, make described voice coil loudspeaker voice coil produce unidirectional electric power F in same work moment;
Described loud speaker has the repulsion type magnet and the repulsion type magnetic circuit of a pair of holohedral symmetry magnetic property on different axial heights, constitute three described magnetic gaps thus, inserts long-pending three voice coil loudspeaker voice coils that equate of conductive wire cross-section in described magnetic gap, as two voice coil loudspeaker voice coil W that are positioned at the outside
AAnd W
CLook from the vibrating diaphragm lateral direction and fashionablely to have inhour around to, a voice coil loudspeaker voice coil W placed in the middle
BMust have clockwise around to, vice versa, described voice coil loudspeaker voice coil W
ATail end Y
AWith described voice coil loudspeaker voice coil W
BHead end X
BSerial connection, described voice coil loudspeaker voice coil W
BTail end Y
BWith described voice coil loudspeaker voice coil W
CHead end X
CSerial connection, described voice coil loudspeaker voice coil W
CTail end Y
CAlong described speech coil framework vertical drawing and described voice coil loudspeaker voice coil W
AHead end X
AConstitute the pair of input terminals of described loud speaker, described voice coil loudspeaker voice coil W
AAnd W
CHas equal number of turn n
AAnd n
CWith the inductance value L that equates
AAnd L
C, set described voice coil loudspeaker voice coil W
BNumber of turn n
B=n
A+ n
CSet described voice coil loudspeaker voice coil W simultaneously
BThe inductance value absolute value | L
B|=| L
A|+| L
C|, described loud speaker is a loud speaker with pure resistor load characteristic;
Described loud speaker has the repulsion type magnet and the repulsion type magnetic circuit of a pair of holohedral symmetry magnetic property on different axial heights, constitute three described magnetic gaps thus, in described magnetic gap, insert long-pending three voice coil loudspeaker voice coils that equate of conductive wire cross-section, as two described voice coil loudspeaker voice coil W that are positioned at the outside
A' and W
C' look from the vibrating diaphragm lateral direction and fashionablely to have inhour around to, a described voice coil loudspeaker voice coil W placed in the middle
B' must have clockwise around to, vice versa, at described voice coil loudspeaker voice coil W
B1/2 number of turn place be provided with a centre cap Y
B' and constitute described voice coil loudspeaker voice coil W thus
B1' and W
B2', described voice coil loudspeaker voice coil W
A' tail end Y
A' with described voice coil loudspeaker voice coil W
B1' head end X
B1' serial connection, described voice coil loudspeaker voice coil W
C' tail end Y
C' with described voice coil loudspeaker voice coil W
B2' head end X
B2' serial connection, described voice coil loudspeaker voice coil W
C' head end X
C' along described speech coil framework vertical drawing and described voice coil loudspeaker voice coil W
A' head end X
A' and connect back and described voice coil loudspeaker voice coil W
B1' and W
B2' public tail end Y
BThe pair of input terminals of the described loud speaker of ' formation, described voice coil loudspeaker voice coil W
A' and W
C' have an equal number of turn n
A' and n
C' and equal inductance value L
A' and L
C', described voice coil loudspeaker voice coil W
B1' and W
B2' have an equal number of turn n
B1' and n
B2' and equal inductance value L
B1' and L
B2', set the number of turn n of described voice coil loudspeaker voice coil
A'=n
C'=n
B1'=n
B2' and set the inductance value absolute value of described voice coil loudspeaker voice coil simultaneously | L
B1' |=| L
B2' |=| L
A' |=L
C' |, described loud speaker is a loud speaker with pure resistor load characteristic.
2, loud speaker according to claim 1 regulation, it is characterized in that: the diameter of described cylinder shape magnetic is bigger than the diameter of described repulsion type magnet, described flat board is one and has the circular dull and stereotyped of central axis hole, described permanent magnet is the disk shape magnet with central axis hole, the axle center bottom part of described framework is provided with the inner concave platform of a rising, the axis part of described inner concave platform is provided with an axis hole, the securing member that mates a secondary non-magnet material making is fastened on described repulsion type magnet on the described inner concave platform face, perhaps utilize a convex column that is positioned at described inner concave platform over glaze heart position with the integrated die cast of described framework, described repulsion type magnet is sleeved on the described inner concave platform face, the filling binding agent stops described flat board or described permanent magnet to make center displacement and itself and described framework are connected to as a whole in the formed gap of central axis hole of described securing member or described convex column and described flat board and described permanent magnet, and the outer peripheral face of described cylinder shape magnetic is embedded in the recessed position medial surface of described framework and connects to as a whole with framework.
3, loud speaker according to claim 1 regulation, it is characterized in that: the diameter of described cylinder shape magnetic is bigger than the diameter of described repulsion type magnet, described flat board is a circular flat board, described permanent magnet is a disk shape magnet, the axle center bottom part of described framework is provided with the inner concave platform of a rising, described repulsion type magnet inserts securing member that uniform non-magnet material makes and described flat board and described permanent magnet and described inner concave platform and described framework is connected to as a whole by bonding mode or on the radially evagination antelabium of described flat board, the outer peripheral face of described cylinder shape magnetic is embedded in the recessed position medial surface of described framework and connects to as a whole with framework.
4, loud speaker according to claim 1 regulation, it is characterized in that: the diameter of described cylinder shape magnetic is littler than the diameter of described repulsion type magnet, described cylinder shape magnetic is put generation by a cylindric magnetic, described flat board is an annular flat board with central axis hole, the axle center bottom part of described framework is provided with the inner concave platform of a rising, the axis part of described inner concave platform is provided with an axis hole, the securing member that mates a secondary non-magnet material making is fastened on described cylinder shape magnetic or cylindric magnetic bonding on the described inner concave platform face, perhaps utilize a convex column that is positioned at described inner concave platform over glaze heart position with the integrated die cast of described framework, described cylinder shape magnetic is sleeved on the described inner concave platform face, the filling binding agent stops it to make center displacement and itself and described framework are connected to as a whole in the formed gap of central axis hole of described non magnetic securing member or described convex column and described cylinder shape magnetic, and the outer peripheral face of described repulsion type magnet is embedded in the recessed position medial surface of described framework and connects to as a whole with framework.
5, a kind of loud speaker, comprise magnetic circuit and link the all-in-one-piece framework with it, the speech coil framework that is installed in interior vibrating diaphragm of this framework and elastic damping plate and is attached thereto, wound in parallel lead insulated from each other also constitutes the voice coil loudspeaker voice coil that inserts the magnetic circuit magnetic gap on it, it is characterized in that: on two side planes of the flat board of a magnetic material making one group of column or cylinder shape rare earth metal binding type permanent magnet are installed respectively, described permanent magnet is polarized in the face of the vertical side face of radial projection antelabium that is positioned at outboard end magnetizes by the horizontal substrate near a described dull and stereotyped side and has identical polarity in the side near described flat board, constitute a pair of or a pair of above repulsion type magnet thus, radially protrude out a well-balanced antelabium with the projection plane of the more coaxial mounted two groups of described permanent magnet substrates of the coaxial mounted described flat board of described permanent magnet, its thickness and described flat board equate or are the some of described slab-thickness, three described antelabium that protrude out of described permanent magnet and described flat board have identical projected area, constitute three or three the above magnetic gaps between the vertical side face with the vertical side face of the coaxial mounted cylinder shape magnetic of described repulsion type magnet and the described radial projection antelabium of described flat board and described permanent magnet, in described magnetic gap, insert coaxial mounted voice coil loudspeaker voice coil, stipulate described voice coil loudspeaker voice coil around to and the sense of current of flowing through voice coil, make described voice coil loudspeaker voice coil produce unidirectional electric power F in same work moment;
Described loud speaker has the repulsion type magnet and the repulsion type magnetic circuit of a pair of holohedral symmetry magnetic property on different axial heights, constitute three described magnetic gaps thus, inserts long-pending three voice coil loudspeaker voice coils that equate of conductive wire cross-section in described magnetic gap, as two voice coil loudspeaker voice coil W that are positioned at the outside
AAnd W
CLook from the vibrating diaphragm lateral direction and fashionablely to have inhour around to, a voice coil loudspeaker voice coil W placed in the middle
BMust have clockwise around to, vice versa, described voice coil loudspeaker voice coil W
ATail end Y
AWith described voice coil loudspeaker voice coil W
BHead end X
BSerial connection, described voice coil loudspeaker voice coil W
BTail end Y
BWith described voice coil loudspeaker voice coil W
CHead end X
CSerial connection, described voice coil loudspeaker voice coil W
CTail end Y
CAlong described speech coil framework vertical drawing and described voice coil loudspeaker voice coil W
AHead end X
AConstitute the pair of input terminals of described loud speaker, described voice coil loudspeaker voice coil W
AAnd W
CHas equal number of turn n
AAnd n
CWith the inductance value L that equates
AAnd L
C, set described voice coil loudspeaker voice coil W
BNumber of turn n
B=n
A+ n
CSet described voice coil loudspeaker voice coil W simultaneously
BThe inductance value absolute value | L
B|=| L
A|+| L
C|, described loud speaker is a loud speaker with pure resistor load characteristic;
Described loud speaker has the repulsion type magnet and the repulsion type magnetic circuit of a pair of holohedral symmetry magnetic property on different axial heights, constitute three described magnetic gaps thus, in described magnetic gap, insert long-pending three voice coil loudspeaker voice coils that equate of conductive wire cross-section, as two described voice coil loudspeaker voice coil W that are positioned at the outside
A' and W
C' look from the vibrating diaphragm lateral direction and fashionablely to have inhour around to, a described voice coil loudspeaker voice coil W placed in the middle
B' must have clockwise around to, vice versa, at described voice coil loudspeaker voice coil W
B' 1/2 number of turn place be provided with a centre cap Y
B' and constitute described voice coil loudspeaker voice coil W thus
B1' and W
B2', described voice coil loudspeaker voice coil W
A' tail end Y
A' with described voice coil loudspeaker voice coil W
B1' head end X
B1' serial connection, described voice coil loudspeaker voice coil W
C' tail end Y
C' with described voice coil loudspeaker voice coil W
B2' head end X
B2' serial connection, described voice coil loudspeaker voice coil W
C' head end X
C' along described speech coil framework vertical drawing and described voice coil loudspeaker voice coil W
A' head end X
A' back and described voice coil loudspeaker voice coil W are connected in parallel
B1' and W
B2' public tail end Y
BThe pair of input terminals of the described loud speaker of ' formation, described voice coil loudspeaker voice coil W
A' and W
C' have an equal number of turn n
A' and n
C' and equal inductance value L
A' and L
C', described voice coil loudspeaker voice coil W
B1' and W
B2' have an equal number of turn n
B1' n
B2' and equal inductance value L
B1' and L
B2', set the number of turn n of described voice coil loudspeaker voice coil
A'=n
C'=n
B1'=n
B2' and set the inductance value absolute value of described voice coil loudspeaker voice coil simultaneously | L
B1' |=L
B' |=| L
A' |=| L
C' |, described loud speaker is a loud speaker with pure resistor load characteristic.
6, loud speaker according to claim 5 regulation, it is characterized in that: the diameter of described cylinder shape magnetic is bigger than the diameter of described repulsion type magnet, described flat board is one and has the circular dull and stereotyped of central axis hole, described permanent magnet is the column rare earth metal binding type magnet with central axis hole, the axle center bottom part of described framework is provided with the inner concave platform of a rising, the axis part of described inner concave platform is provided with an axis hole, the securing member that mates a secondary non-magnet material making is fastened on described repulsion type magnet on the described inner concave platform face, perhaps utilize a convex column that is positioned at described inner concave platform over glaze heart position with the integrated die cast of described framework, described repulsion type magnet is sleeved on the described inner concave platform face, the filling binding agent stops described flat board or described permanent magnet to make center displacement and itself and described framework are connected to as a whole in the formed gap of central axis hole of described securing member or described convex column and described flat board and described permanent magnet, and the outer peripheral face of described cylinder shape magnetic is embedded in the recessed position medial surface of described framework and connects to as a whole with framework.
7, loud speaker according to claim 5 regulation, it is characterized in that: the diameter of described cylinder shape magnetic is bigger than the diameter of described repulsion type magnet, described flat board is a circular flat board, described permanent magnet is solid column rare earth metal binding type magnet, the axle center bottom part of described framework is provided with the inner concave platform of a rising, described repulsion type magnet connects to as a whole by bonding mode and described inner concave platform and described framework, the outer peripheral face of described cylinder shape magnetic is embedded in the recessed position medial surface of described framework and connects to as a whole with framework.
8, loud speaker according to claim 5 regulation, it is characterized in that: the diameter of described cylinder shape magnetic is littler than the diameter of described repulsion type magnet, described cylinder shape magnetic is put generation by a cylindric magnetic, described flat board is an annular flat board, described permanent magnet is a cylinder shape rare earth metal binding type magnet, the axle center bottom part of described framework is provided with the inner concave platform of a rising, the axis part of described inner concave platform is provided with an axis hole, the securing member that mates a secondary non-magnet material making is fastened on described cylinder shape magnetic or cylindric magnetic bonding on the described inner concave platform face, perhaps utilize a convex column that is positioned at described inner concave platform over glaze heart position with the integrated die cast of described framework, described cylinder shape magnetic is sleeved on the described inner concave platform face, the filling binding agent stops described cylinder shape magnetic to make center displacement and itself and described framework are connected to as a whole in the formed gap of central axis hole of described non magnetic securing member or described convex column and described cylinder shape magnetic, and the outer peripheral face of described repulsion type magnet is embedded in the recessed position medial surface of described framework and connects to as a whole with framework.
9, a kind of loud speaker, comprise magnetic circuit and link the all-in-one-piece framework with it, the speech coil framework that is installed in interior vibrating diaphragm of this framework and elastic damping plate and is attached thereto, wound in parallel lead insulated from each other also constitutes the voice coil loudspeaker voice coil that inserts the magnetic circuit magnetic gap on it, it is characterized in that: the both side ends and the portion placed in the middle of one group of column or cylinder shape rare earth metal binding type permanent magnet are provided with three well-balanced radial projection antelabium, described three projected areas that protrude out antelabium equate and protrude out the vertical side face of antelabium by that of centre to protrude out the polarization of magnetizing of the vertical side face of antelabium to being positioned at two of both side ends, constitute a pair of or a pair of above repulsion type magnet thus, protrude out between the vertical side face of antelabium with the vertical side face of the coaxial mounted cylinder shape magnetic of described repulsion type magnet and described permanent magnet described and to constitute three or three the above magnetic gaps, in described magnetic gap, insert coaxial mounted voice coil loudspeaker voice coil, stipulate described voice coil loudspeaker voice coil around to and the sense of current of flowing through voice coil, make described voice coil loudspeaker voice coil produce unidirectional electric power F in same work moment;
Described loud speaker has the repulsion type magnet and the repulsion type magnetic circuit of a pair of holohedral symmetry magnetic property on different axial heights, constitute three described magnetic gaps thus, inserts long-pending three voice coil loudspeaker voice coils that equate of conductive wire cross-section in described magnetic gap, as two voice coil loudspeaker voice coil W that are positioned at the outside
AAnd W
CLook from the vibrating diaphragm lateral direction and fashionablely to have inhour around to, a voice coil loudspeaker voice coil W placed in the middle
BMust have clockwise around to, vice versa, described voice coil loudspeaker voice coil W
ATail end Y
AWith described voice coil loudspeaker voice coil W
BHead end X
BSerial connection, described voice coil loudspeaker voice coil W
BTail end Y
BWith described voice coil loudspeaker voice coil W
CHead end X
CSerial connection, described voice coil loudspeaker voice coil W
CTail end Y
CAlong described speech coil framework vertical drawing and described voice coil loudspeaker voice coil W
AHead end X
AConstitute the pair of input terminals of described loud speaker, described voice coil loudspeaker voice coil W
AAnd W
CHas equal number of turn n
AAnd n
CWith the inductance value L that equates
AAnd L
C, set described voice coil loudspeaker voice coil W
BNumber of turn n
B=n
A+ n
CSet described voice coil loudspeaker voice coil W simultaneously
BThe inductance value absolute value | L
B|=| L
A|+| L
C|, described loud speaker is a loud speaker with pure resistor load characteristic;
Described loud speaker has the repulsion type magnet and the repulsion type magnetic circuit of a pair of holohedral symmetry magnetic property on different axial heights, constitute three described magnetic gaps thus, in described magnetic gap, insert long-pending three voice coil loudspeaker voice coils that equate of conductive wire cross-section, as two described voice coil loudspeaker voice coil W that are positioned at the outside
A' and W
C' look from the vibrating diaphragm lateral direction and fashionablely to have inhour around to, a described voice coil loudspeaker voice coil W placed in the middle
B' must have clockwise around to, vice versa, at described voice coil loudspeaker voice coil W
B' 1/2 number of turn place be provided with a centre cap Y
B' and constitute described voice coil loudspeaker voice coil W thus
B1' and W
B2', described voice coil loudspeaker voice coil W
A' tail end Y
A' with described voice coil loudspeaker voice coil W
B1' head end X
B1' serial connection, described voice coil loudspeaker voice coil W
C' tail end Y
C' with described voice coil loudspeaker voice coil W
B2' head end X
B2' serial connection, described voice coil loudspeaker voice coil W
C' head end X
C' along described speech coil framework vertical drawing and described voice coil loudspeaker voice coil W
A' head end X
A' back and described voice coil loudspeaker voice coil W are connected in parallel
B1' and W
B2' public tail end Y
BThe pair of input terminals of the described loud speaker of ' formation, described voice coil loudspeaker voice coil W
A' and W
C' have an equal number of turn n
A' and n
C' and equal inductance value L
A' and L
C', described voice coil loudspeaker voice coil W
B1' and W
B2' have an equal number of turn n
B1' and n
B2' and equal inductance value L
B1' and L
B2', set the number of turn n of described voice coil loudspeaker voice coil
A'=n
C'=n
B1'=n
B2' and set the inductance value absolute value of described voice coil loudspeaker voice coil simultaneously | L
B1' |=| L
B2' |=| L
A' |=| L
C' |, described loud speaker is a loud speaker with pure resistor load characteristic.
10, loud speaker according to claim 9 regulation, it is characterized in that: the diameter of described cylinder shape magnetic is bigger than the diameter of described repulsion type magnet, described permanent magnet is one group of column rare earth metal binding type magnet with central axis hole, the axle center bottom part of described framework is provided with the inner concave platform of a rising, the axis part of described inner concave platform is provided with an axis hole, the securing member that mates a secondary non-magnet material making is fastened on described repulsion type magnet on the described inner concave platform face, perhaps utilize a convex column that is positioned at described inner concave platform over glaze heart position with the integrated die cast of described framework, described repulsion type magnet is sleeved on the described inner concave platform face, the filling binding agent stops described permanent magnet to make center displacement and itself and described framework are connected to as a whole in the formed gap of central axis hole of described securing member or described convex column and described permanent magnet, and the outer peripheral face of described cylinder shape magnetic is embedded in the recessed position medial surface of described framework and connects to as a whole with framework.
11, the loud speaker of stipulating according to claim 9, it is characterized in that: the diameter of described cylinder shape magnetic is bigger than the diameter of described repulsion type magnet, described permanent magnet is solid column rare-earth bound type magnet, the axle center bottom part of described framework is provided with the inner concave platform of a rising, described repulsion type magnet connects to as a whole by bonding mode and described inner concave platform and described framework, the outer peripheral face of described cylinder shape magnetic is embedded in the recessed position medial surface of described framework and connects to as a whole with framework.
12, loud speaker according to claim 9 regulation, it is characterized in that: the diameter of described cylinder shape magnetic is littler than the diameter of described repulsion type magnet, described cylinder shape magnetic is put generation by a cylindric magnetic, described permanent magnet is a cylinder shape rare earth metal binding type magnet, the axle center bottom part of described framework is provided with the inner concave platform of a rising, the axis part of described inner concave platform face is provided with an axis hole, the securing member that mates a secondary non-magnet material making is fastened on described cylinder shape magnetic or cylindric magnetic bonding on the described inner concave platform face, perhaps utilize a convex column that is positioned at described inner concave platform over glaze heart position with the integrated die cast of described framework, described cylinder shape magnetic is sleeved on the described inner concave platform face, the filling binding agent stops described cylinder shape magnetic to make center displacement and itself and described framework are connected to as a whole in the formed gap of central axis hole of described non magnetic securing member or described convex column and described cylinder shape magnetic, and the outer peripheral face of described repulsion type magnet is embedded in the recessed position medial surface of described framework and connects to as a whole with framework.
13, the loud speaker of claim 1 or one of claim 5 or claim 9 defined, it is characterized in that: the diameter of described cylinder shape magnetic is littler than the diameter of described repulsion type magnet, described framework is a uncovered cylinder that non-magnetic conduction rigid material is made, axis part at the bottom of the cylinder is provided with the inner concave platform of a rising, which is provided with a central axis hole that penetrates, the central axis hole that described axis hole and bonding are positioned at the repulsion type magnet on the described inner concave platform face matches each other and forms an anti-phase duct of sound wave, described cylinder shape magnetic is embedded into the cylindric inwall mating surface of described framework and via the described annular flat table top bonding location that is arranged at the bottom of the cylinder, the uncovered position of described cylinder-shaped frame expands to a ring flange laterally, one embeds three described magnetic gaps of described magnetic circuit with traditional dull and stereotyped voice coil loudspeaker voice coil that will link into an integrated entity with it of annular insulation of ball top shape vibrating diaphragm or plate shaped vibrating diaphragm bonding coupling by the outside and by the annular flange that sets in advance on the outer side plane of described ring flange, groove or uniform column are located, and constitute the basic driver unit of a high pitch or Squawker thus;
Described loud speaker has the repulsion type magnet and the repulsion type magnetic circuit of a pair of holohedral symmetry magnetic property on different axial heights, constitute three described magnetic gaps thus, inserts long-pending three voice coil loudspeaker voice coils that equate of conductive wire cross-section in described magnetic gap, as two voice coil loudspeaker voice coil W that are positioned at the outside
AAnd W
CLook from the vibrating diaphragm lateral direction and fashionablely to have inhour around to, a voice coil loudspeaker voice coil W placed in the middle
BMust have clockwise around to, vice versa, described voice coil loudspeaker voice coil W
ATail end Y
AWith described voice coil loudspeaker voice coil W
BHead end X
BSerial connection, described voice coil loudspeaker voice coil W
BTail end Y
BWith described voice coil loudspeaker voice coil W
CHead end X
CSerial connection, described voice coil loudspeaker voice coil W
CTail end Y
CAlong described speech coil framework vertical drawing and described voice coil loudspeaker voice coil W
AHead end X
AConstitute the pair of input terminals of described loud speaker, described voice coil loudspeaker voice coil W
AAnd W
CHas equal number of turn n
AAnd n
CWith the inductance value L that equates
AAnd L
C, set described voice coil loudspeaker voice coil W
BNumber of turn n
B=n
A+ n
CSet described voice coil loudspeaker voice coil W simultaneously
BThe inductance value absolute value | L
B|=| L
A|+| L
C|, described loud speaker is a loud speaker with pure resistor load characteristic;
Described loud speaker has the repulsion type magnet and the repulsion type magnetic circuit of a pair of holohedral symmetry magnetic property on different axial heights, constitute three described magnetic gaps thus, in described magnetic gap, insert long-pending three voice coil loudspeaker voice coils that equate of conductive wire cross-section, as two described voice coil loudspeaker voice coil W that are positioned at the outside
A' and W
C' look from the vibrating diaphragm lateral direction and fashionablely to have inhour around to, a described voice coil loudspeaker voice coil W placed in the middle
B' must have clockwise around to, vice versa, at described voice coil loudspeaker voice coil W
B' 1/2 number of turn place be provided with a centre cap Y
B' and constitute described voice coil loudspeaker voice coil W thus
B1' and W
B2', described voice coil loudspeaker voice coil W
A' tail end Y
A' with described voice coil loudspeaker voice coil W
B1' head end X
B1' serial connection, described voice coil loudspeaker voice coil W
C' tail end Y
C' with described voice coil loudspeaker voice coil W
B2' head end X
B2' serial connection, described voice coil loudspeaker voice coil W
C' head end X
C' along described speech coil framework vertical drawing and described voice coil loudspeaker voice coil W
A' head end X
A' back and described voice coil loudspeaker voice coil W are connected in parallel
B1' and W
B2' public tail end Y
BThe pair of input terminals of the described loud speaker of ' formation, described voice coil loudspeaker voice coil W
A' and W
C' have an equal number of turn n
A' and n
C' and equal inductance value L
A' and L
C', described voice coil loudspeaker voice coil W
B1' and W
B2' have an equal number of turn n
B1' and n
B2' and equal inductance value L
B1' and L
B2', set the number of turn n of described voice coil loudspeaker voice coil
A'=n
C'=n
B1'=n
B2' and set the inductance value absolute value of described voice coil loudspeaker voice coil simultaneously | L
B1' |=| L
B2' |=| L
A'=| L
C' |, described loud speaker is a loud speaker with pure resistor load characteristic.
14, the loud speaker of claim 1 or one of claim 5 or claim 9 defined, it is characterized in that: described framework is put generation by another combined frame, described combined frame is combined by taper basin frame and end basin, described taper basin sets up the elastic damping plate bearing-surface that is distributed in the traditional vibrating diaphragm yoke circle bearing-surface on the different axial heights and is positioned at the speech coil framework upper end, the axle center bottom part of described taper basin frame is provided with a uncovered cylinder or similar structures, it is inboard and expand to a ring flange that outwards protrudes out at its substrate position that the inwall of described cylinder or similar structures constitutes the recessed position of described framework, the axis part of basin of the described end is provided with the inner concave platform of a rising, the uncovered position, upper end of basin of the described end expand to another ring flange of outwards protruding out and with the corresponding coupling of described ring flange of described taper basin frame, described inner concave platform becomes one by the concave shaped rib of radial equipartition and the described ring flange binding of basin of the described end, be provided with essential operating space and ventilation and heat passage between the vertical outer rim of rib and rib, described rib and the described ring flange junction that crosses also is provided with a ring-type Horizontal Branch bearing surface, the bottom elastic damping plate of the described loudspeaker voice coil skeleton of bonding on it, described taper basin frame and basin of the described end are by described a pair of ring flange installing and locating and connect to as a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99114781 CN1121809C (en) | 1999-04-09 | 1999-04-09 | Loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99114781 CN1121809C (en) | 1999-04-09 | 1999-04-09 | Loudspeaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1270488A CN1270488A (en) | 2000-10-18 |
| CN1121809C true CN1121809C (en) | 2003-09-17 |
Family
ID=5277824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99114781 Expired - Fee Related CN1121809C (en) | 1999-04-09 | 1999-04-09 | Loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1121809C (en) |
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|---|---|
| CN1270488A (en) | 2000-10-18 |
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