CN220422025U

CN220422025U - Coaxial excitation loudspeaker

Info

Publication number: CN220422025U
Application number: CN202320669948.0U
Authority: CN
Inventors: 何华明
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-03-30
Filing date: 2023-03-30
Publication date: 2024-01-30
Anticipated expiration: 2033-03-30

Abstract

The coaxial exciting loudspeaker is characterized in that a magnetic conductive piece is fixedly arranged on a Gao Yinhua st and a bass washer, the treble washer is fixedly arranged on a hollow polar column, the bass end of the hollow polar column is coaxial with the bass washer to form a double-gap magnetic circuit with high and low magnetic gaps, an exciting coil is sleeved on the hollow polar column of the magnetic circuit, high and low magnetic coils with vibrating diaphragms are respectively arranged at the high and low magnetic gaps, the bass washer is also fixed on a loudspeaker basin frame to form a complete loudspeaker, and further the improvement method comprises the steps of increasing a field intensity regulating mechanism, a treble horn, a treble sound collector and the like so as to improve the practical performance of the loudspeaker.

Description

Coaxial excitation loudspeaker

Technical Field

The utility model relates to a loudspeaker which generates mechanical power in a magnetic field by an electrified voice coil and further generates sound, in particular to a coaxial excitation loudspeaker which is provided with a high-low sound double-electric sound part on the same axis by an excitation magnetic field generated by the electrified voice coil.

Background

The electromagnetic power conversion is as follows: 1. the constant magnetic horn is popular, namely, a permanent magnet forms a magnetic circuit of the constant magnetic horn, a voice coil is arranged in a magnetic circuit gap, when the voice coil is electrified with alternating current, such as audio current, the voice coil converts the changed alternating current into mechanical energy of the same-frequency vibration in a magnetic circuit magnetic field, so that a sound film or a cone is pushed to generate sound; 2. the double-gap coaxial constant magnetic circuit loudspeaker with single magnetic circuit and double gaps is characterized in that the loudspeaker forms a double-gap magnetic circuit on the same magnetic circuit and the same axis, and each gap is provided with a voice coil to form a double-sounding unit, so that high and low tones can be combined on the same magnetic circuit; 3. the magnetic field intensity generated by the excitation loudspeaker is generated by an electrified excitation coil, namely, the principle of electricity generation magnetism, a magnetic circuit after electromagnetic field intensity is generated is provided with a magnetic gap, a voice coil is arranged in the gap, and the voice coil converts electric energy into mechanical energy through audio current to generate sound.

Disclosure of Invention

The utility model discloses a coaxial excitation loudspeaker, which is added with an excitation coil which is arranged between a high-pitched washer and a low-pitched washer and is sleeved on a hollow pole, wherein the excitation coil is arranged on the basis of a loudspeaker consisting of the high-pitched washer, the low-pitched washer, a hollow pole, a high-pitched coil, a low-pitched coil, a loudspeaker basin frame and a low-pitched cone, and the excitation coil is sleeved on the hollow pole, and the excitation coil is arranged between the high-pitched washer and the low-pitched washer, wherein the excitation coil is arranged on the hollow pole, and comprises a magnetic conductive part and a magnetic material: the magnetic conductive piece is fixedly arranged between the Gao Yinhua st and the bass washer, the treble washer is fixedly arranged at the treble end of the hollow pole, the bass washer is arranged on the magnetic conductive piece and is coaxial with the bass end of the hollow pole, the bass washer is also fixed on the loudspeaker basin frame, the treble washer, the bass washer and the hollow pole form a double-gap magnetic circuit with a treble magnetic gap and a bass magnetic gap, the exciting coil can be sleeved on the hollow pole or the magnetic conductive piece of the double-gap magnetic circuit to provide total magnetic flux phi for the double-gap magnetic circuit, the treble coil is fixed in the treble magnetic gap between the Gao Yinhua st and the upper end of the hollow pole, and the bass coil connected with the bass cone is fixed in the bass magnetic gap between the bass washer and the lower end of the hollow pole through the loudspeaker basin frame to form a coaxial exciting loudspeaker with a complete double-sound part structure. The content of further improving the performance of the loudspeaker based on the structure is as follows: 1. the field intensity adjusting mechanism is added to improve the consistency and the pairing function of the products; 2. the lower gap positioner is added, so that the mechanical structure of the bass magnetic gap is more stable; 3. a high-pitch horn is connected to the bass end of the hollow pole, so that the high-pitch tone quality and the frequency characteristic are enhanced; 4. a high-pitch sound collector or a high-pitch Qu Kong sound collector is arranged at the high-pitch end of the hollow pole, so that the sound directivity and the diffusion performance are improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application.

FIG. 1 is a schematic front view in semi-section of a first embodiment of the utility model;

FIG. 2 is a partial semi-cutaway schematic view of a dihomo portion of an embodiment of the present utility model;

FIG. 3 is a schematic partial cross-sectional view of a tri-tweeter portion of an embodiment of the present utility model;

FIG. 4 is a partial schematic cross-sectional view of a four bass portion of an embodiment of the present utility model;

FIG. 5 is a partial schematic view in full section of a penta bass portion of an embodiment of the present utility model;

FIG. 6 is a partial semi-cutaway schematic view of a six-treble portion of an embodiment of the present utility model;

FIG. 7 is a schematic diagram of a seventh semi-sectioned front view of an embodiment of the present utility model;

FIG. 8 is a schematic partial cross-sectional view of an octave according to an embodiment of the present utility model;

fig. 9 is a front view (full section) and a plan view of a ninth embodiment of the present utility model.

Detailed description of the preferred embodiments

Wherein each component part number, the structure description number and the parameter code number of the part are as follows:

gao Yinhua, bass washer (2), hollow pole (3), upper gap positioner (4), lower gap positioner (5), magnetic conduction piece (6), high pitch sound collector (7), exciting coil (8), high pitch horn (9), high pitch coil (10), low pitch coil (11), loudspeaker basin frame (12), bass cone (13), low pitch magnetic circuit short circuit ring (15), high pitch Qu Kong sound collector (16), magnetic separator (17), high pitch section magnetic flux phi 1 adjustment mechanism (18), high pitch diaphragm (19), coaxial exciting horn (30), double gap magnetic circuit (31), low pitch coil hole (32), high pitch end (35) of hollow pole (3), low pitch end (36) of hollow pole (3), high pitch magnetic gap (37), low pitch magnetic gap (38), high pitch horn (9) outlet end (40), sound channel (41), partial ball cambered surface (42), low pitch ball cambered surface (43), hollow channel (44), total magnetic flux phi, high pitch section magnetic flux phi 1, low pitch coil (2), high pitch magnetic path length L, high pitch magnetic path L2 magnetic path length coupling.

The specific implementation scheme of the utility model is as follows:

first scenario (as shown in fig. 1): the utility model provides a coaxial excitation loudspeaker (30), it comprises Gao Yinhua department (1), bass washer (2), high pitch coil (10), high pitch vibrating diaphragm (19), low pitch coil (11), loudspeaker basin frame (12), bass cone (13), its characterized in that: magnetic conduction piece (6), hollow pole (3) and exciting coil (8) are added, wherein: the magnetic conduction piece (6) is fixedly arranged between the Gao Yinhua st (1) and the bass washer (2), the high-pitch end (35) of the hollow polar column (3) is fixedly arranged in the middle of the high-pitch washer (1), the low-pitch coil hole (32) of the bass washer (2) is coaxial with the low-pitch end (36) of the hollow polar column (3), the Gao Yinhua st (1), the magnetic conduction piece (6), the bass washer (2) and the hollow polar column (3) form a double-gap magnetic circuit (31) with a high-pitch magnetic gap (37) and a low-pitch magnetic gap (38), and the exciting coil (8) is sleeved on the hollow polar column (3) or the magnetic conduction piece (6) on the double-gap magnetic circuit (31).

The excitation coil (8) provides total magnetic flux phi for the double-gap magnetic circuit (31), the high-pitch coil (10) connected with the high-pitch vibrating diaphragm (19) is fixed in a high-pitch magnetic gap (37) formed by Gao Yinhua seconds (1) and the hollow pole (3), sound emitted by the high-pitch vibrating diaphragm (19) is transmitted out through a hollow channel (44) of the hollow pole (3), the bass washer (2) is further fixed on the loudspeaker basin frame (12), and the low-pitch coil (11) connected with the low-pitch cone (13) is fixed in a low-pitch magnetic gap (38) formed by the bass washer (2) and the hollow pole (3) through the loudspeaker basin frame (12).

A second aspect (as shown in fig. 2) is the coaxial excitation horn (30) according to the first aspect, characterized in that: and a high-pitch section magnetic flux phi 1 regulating mechanism (18) is added, wherein the high-pitch section magnetic flux phi 1 regulating mechanism (18) consists of a hollow pole (3) and a hollow pole (Gao Yinhua) 1, namely a low-pitch magnetic coupling section H2 in a high-pitch magnetic gap (37) consisting of the hollow pole (3) Gao Yinduan (35) and the hollow pole (Gao Yinhua) 1.

Because the height H1 of the high-pitch coil (10) is smaller, and meanwhile, the magnetic fluxes required by the high-pitch coil and the low-pitch coil are different, namely, the magnetic flux phi 1 of the high-pitch section is smaller than the total magnetic flux phi, a low-pitch magnetic coupling section H2 which does not carry the high-pitch coil (10) is reserved in a high-pitch magnetic gap (37), the net low-pitch section magnetic flux phi 2 is split, the aim of adjusting the magnetic flux phi 1 of the high-pitch section to be smaller than the total magnetic flux phi is fulfilled, the ratio of the magnetic flux phi 1 of the high-pitch section to the total magnetic flux phi, namely, the ratio of phi 1/phi, can be changed, and the consistency with other products and the matching requirement can be met by adjusting the ratio of phi 1/phi of independent products.

A third aspect (as shown in fig. 3) is the coaxial excitation horn (30) according to the second aspect, characterized in that: the high-pitch section magnetic flux phi 1 regulating mechanism (18) is characterized in that a magnetic separator (17) is added on a low-pitch magnetic coupling section H2 of the high-pitch washer (1) and the hollow pole (3).

Because the bass magnetic coupling section H2 and the hollow pole (3) are the same rigid body, the structure is fixed, the change and adjustment are inconvenient, the split net bass magnetic flux phi 2 is relatively constant, the size of a treble magnetic gap (37) or the mechanical parameters of the coupling area of the bass magnetic coupling section H2 can be flexibly adjusted by adding the magnetic divider (17), and the magnetic resistance between the Gao Yinhua s (1) and the hollow pole (3) is changed, so that the ratio of the treble magnetic flux phi 1 to the total magnetic flux phi, namely the ratio of phi 1/phi, is adjusted.

A fourth aspect (as shown in fig. 4) is the coaxial excitation horn (30) according to the first aspect, characterized in that: a lower clearance positioner (5) is added between the hollow polar column (3) and the bass washer (2).

The lower gap positioner (5) is arranged between the high-low sound washer (2) and the hollow polar column (3) so as to improve the mechanical stability between the high-low sound washer (2) and the hollow polar column (3), prevent the radial offset and the axial movement of the hollow polar column (3) and ensure the stability of the low sound magnetic gap (38).

A fifth aspect (as shown in fig. 5) is the coaxial excitation horn (30) according to the first aspect, characterized in that: a bass magnetic circuit short circuit ring (15) is added on a bass end (36) of the hollow pole (3).

The bass magnetic circuit short circuit ring (15) is a ring-shaped good conductor, is sleeved on the bass end (36) of the hollow pole (3) and has the function of reducing the influence of an alternating current magnetic field permeated in the double-gap magnetic circuit (31) on the total magnetic flux phi, and the structure of the bass magnetic circuit short circuit ring (15) can be combined with the lower gap positioner (5) into a whole.

A sixth aspect (as shown in fig. 6) is the coaxial excitation horn (30) according to the fourth aspect, characterized in that: an upper gap positioner (4) is added on the high-pitch end (35) of the hollow pole (3).

The upper gap positioner (4) is arranged between the high-pitch washer (1) and the hollow polar column (3), and has the function of stabilizing the mechanical structure between the high-pitch washer (1) and the hollow polar column (3), so as to stabilize the high-pitch magnetic gap (37), and simultaneously, the axial installation position of the hollow polar column (3) relative to the high-pitch washer (1) can be flexibly adjusted.

A seventh aspect (as shown in fig. 7) is the coaxial excitation horn (30) according to any one of the first to sixth aspects, characterized in that: a bass end (36) of the hollow pole (3) is connected with a treble horn (9).

The structure of the high-pitch horn (9) is an involute conical horn, the horn is continuously connected with the low-pitch end (36) of the hollow pole (3) to guide high-pitch output, and the length L of a high-pitch lead axis from the high-pitch diaphragm (19) to the outlet end (40) of the high-pitch horn (9) is changed, so that the acoustic characteristics of the corresponding high-pitch part are obtained.

An eighth aspect (as shown in fig. 8) is the coaxial excitation horn (30) according to the seventh aspect, characterized in that: a high-pitch sound collector (7) is arranged at the high-pitch end (35) of the hollow pole (3), the high-pitch sound collector (7) is based on a local spherical cambered surface (42), and the local spherical cambered surface (42) is provided with more than 3 sound collector sound channels (41) which are used for collecting sound in the ball direction.

The high-pitch sound collector (7) is arranged at the high-pitch end (35) of the hollow polar column (3), the local spherical cambered surface (42) and the diaphragm spherical cambered surface (43) of the high-pitch diaphragm (19) are arranged at the same sphere center, a certain gap is kept, the sound channel (41) of the sound collector is communicated with the hollow channel (44) of the hollow polar column (3), and sound emitted by vibration of the high-pitch diaphragm (19) is transmitted through the sound channel (41) of the sound collector and the hollow channel (44) of the hollow polar column (3).

A ninth aspect (as shown in fig. 9) is the coaxial excitation horn (30) according to the eighth aspect, characterized in that: the high-pitch sound collector (7) is a Gao Yinqu-hole sound collector (16) with a curve hole, namely, the curve hole is formed in a sound channel (41) of the sound collector in the high-pitch sound collector (7).

The outlet direction of the Gao Yinqu hole collector (16) curved hole may be concentrated farther or parallel to the hollow channel (44) axis.

The coaxial excitation horn has good practical performance.

Claims

1. The utility model provides a coaxial excitation loudspeaker (30), it comprises Gao Yinhua department (1), bass washer (2), high pitch coil (10), high pitch vibrating diaphragm (19), low pitch coil (11), loudspeaker basin frame (12), bass cone (13), its characterized in that: magnetic conduction piece (6), hollow pole (3) and exciting coil (8) are added, wherein: the magnetic conduction piece (6) is fixedly arranged between the Gao Yinhua st (1) and the bass washer (2), the high-pitch end (35) of the hollow polar column (3) is fixedly arranged in the middle of the high-pitch washer (1), the low-pitch coil hole (32) of the bass washer (2) is coaxial with the low-pitch end (36) of the hollow polar column (3), the Gao Yinhua st (1), the magnetic conduction piece (6), the bass washer (2) and the hollow polar column (3) form a double-gap magnetic circuit (31) with a high-pitch magnetic gap (37) and a low-pitch magnetic gap (38), and the exciting coil (8) is sleeved on the hollow polar column (3) or the magnetic conduction piece (6) on the double-gap magnetic circuit (31).

2. The coaxial excitation horn (30) of claim 1, wherein: and a high-pitch section magnetic flux phi 1 regulating mechanism (18) is added, wherein the high-pitch section magnetic flux phi 1 regulating mechanism (18) consists of a hollow pole (3) and a hollow pole (Gao Yinhua) 1, namely a low-pitch magnetic coupling section H2 in a high-pitch magnetic gap (37) consisting of the hollow pole (3) Gao Yinduan (35) and the hollow pole (Gao Yinhua) 1.

3. The coaxial excitation horn (30) of claim 2, wherein: the high-pitch section magnetic flux phi 1 regulating mechanism (18) is characterized in that a magnetic separator (17) is added on a low-pitch magnetic coupling section H2 of the high-pitch washer (1) and the hollow pole (3).

4. The coaxial excitation horn (30) of claim 1, wherein: a lower clearance positioner (5) is added between the hollow polar column (3) and the bass washer (2).

5. The coaxial excitation horn (30) of claim 1, wherein: a bass magnetic circuit short circuit ring (15) is added on a bass end (36) of the hollow pole (3).

6. The coaxial excitation horn (30) of claim 4, wherein: an upper gap positioner (4) is added on the high-pitch end (35) of the hollow pole (3).

7. The coaxial excitation horn (30) of any one of claims 1-6, wherein: a bass end (36) of the hollow pole (3) is connected with a treble horn (9).

8. The coaxial excitation horn (30) of claim 7, wherein: a high-pitch sound collector (7) is arranged at the high-pitch end (35) of the hollow pole (3), the high-pitch sound collector (7) is based on a local spherical cambered surface (42), and the local spherical cambered surface (42) is provided with more than 3 sound collector sound channels (41) which are used for collecting sound in the ball direction.

9. The coaxial excitation horn (30) of claim 8, wherein: the high-pitch sound collector (7) is a Gao Yinqu-hole sound collector (16) with a curve hole, namely, the curve hole is formed in a sound channel (41) of the sound collector in the high-pitch sound collector (7).