CN216162851U

CN216162851U - Double-magnetic-circuit coaxial loudspeaker

Info

Publication number: CN216162851U
Application number: CN202122213067.1U
Authority: CN
Inventors: 黄锦堂; 莫焕秋; 钟敏; 韩介清; 许文标; 尤信
Original assignee: Guangxi Hezhou Tianlai Electronic Technology Co ltd
Current assignee: Guangxi Hezhou Tianlai Electronic Technology Co ltd
Priority date: 2021-09-13
Filing date: 2021-09-13
Publication date: 2022-04-01
Anticipated expiration: 2031-09-13

Abstract

The utility model particularly relates to a double-magnetic-circuit coaxial loudspeaker which comprises a high-pitch unit, a low-pitch unit and a support connected with the high-pitch unit and the low-pitch unit, wherein a common magnetic circuit system is arranged between the high-pitch unit and the low-pitch unit, a middle hole used for installing the common magnetic circuit system is formed in the middle of the support, the high-pitch unit and the low-pitch unit are coaxially arranged, and the high-pitch unit is arranged above the low-pitch unit. The coaxial loudspeaker is compact in structure, small in size, high in sensitivity, convenient to assemble, wide in frequency response and capable of simultaneously giving consideration to high-frequency and low-frequency performances.

Description

Double-magnetic-circuit coaxial loudspeaker

Technical Field

The utility model relates to the technical field of loudspeakers, in particular to a double-magnetic-circuit coaxial loudspeaker.

Background

The traditional loudspeaker generally only has one sound producing unit, and is difficult to simultaneously take the bass and treble performances into consideration. Therefore, the market gradually designs the loudspeaker with a double-unit or multi-unit structure, which can meet the requirements of users on bass and treble performance and tone quality. However, the loudspeaker of the dual-unit or multi-unit structure is usually formed by vertically stacking the high pitch unit and the low pitch unit, the loudspeaker formed by the structure has low magnetic circuit utilization rate, relatively poor sensitivity and poor tone quality, and is relatively large in size, and the application size of the loudspeaker in small and miniature products such as earphones is limited.

Disclosure of Invention

In order to overcome the defects and shortcomings in the prior art, the utility model aims to provide a dual-magnetic circuit coaxial loudspeaker which is compact in structure, small in size, high in sensitivity and convenient to assemble.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a double magnetic circuit coaxial loudspeaker, includes high pitch unit, bass unit and connects the support of high pitch unit and bass unit, be provided with public magnetic circuit between high pitch unit and the bass unit, the middle part of support is provided with the mesopore that is used for installing public magnetic circuit, high pitch unit and the coaxial setting of bass unit, the high pitch unit sets up in the top of bass unit.

Further, the high pitch unit includes high pitch vibrating diaphragm, high pitch voice coil loudspeaker voice coil and last casing, the lower extreme and the high pitch voice coil loudspeaker voice coil fixed connection of high pitch vibrating diaphragm, the outer fringe and the last casing fixed connection of high pitch vibrating diaphragm.

Further, the bass unit includes casing, bass shell fragment, bass voice coil loudspeaker voice coil and bass vibrating diaphragm down, the bass shell fragment sets up in the upper end of casing down, the bass vibrating diaphragm sets up in the upper end of bass shell fragment, just the outer fringe of bass vibrating diaphragm and the top outer fringe fixed connection of casing down, the bass voice coil loudspeaker voice coil set up in the upper end of bass vibrating diaphragm and with bass shell fragment electric connection.

Further, public magnetic circuit includes high pitch china, high pitch magnet, public magnetizer, bass magnet and the bass china that from the top down set gradually, high pitch china, high pitch magnet and public magnetizer form the high pitch magnetic circuit of high pitch unit, public magnetizer, bass magnet and bass china form the bass magnetic circuit of bass unit.

Furthermore, the public magnetizer comprises a magnetic conduction column and a magnetic conduction sleeve, the magnetic conduction sleeve is in a ring shape, and the magnetic conduction column is arranged in the magnetic conduction sleeve.

Further, the polarity of the contact surface of the high pitch magnet and the public magnetizer is opposite to that of the contact surface of the low pitch magnet and the public magnetizer.

Further, the lower tip of high pitch voice coil loudspeaker voice coil stretches into in the high pitch magnetic circuit, the upper end of bass voice coil loudspeaker voice coil stretches into in the bass magnetic circuit.

Furthermore, a fixing ring is arranged between the periphery of the public magnetic circuit system and the support, and the fixing ring is sleeved outside the public magnetic circuit system and connected with the support.

Further, the upper end of the fixing ring is fixedly connected with the upper shell, and the lower end of the fixing ring is fixedly connected with the support.

Furthermore, the lower shell is provided with a plurality of sound adjusting holes, and the plurality of sound adjusting holes are distributed in an annular array.

The utility model has the beneficial effects that: the double-magnetic-circuit coaxial loudspeaker is compact in structure, small in size and good in acoustic characteristic, high-frequency performance and low-frequency performance can be considered simultaneously through the arrangement of the high-pitch unit and the low-pitch unit, the frequency response of the coaxial loudspeaker is wide, and the high-pitch unit and the low-pitch unit adopt a common magnetic circuit system to improve the magnetic circuit utilization rate and the sensitivity of the coaxial loudspeaker.

Drawings

Fig. 1 is a schematic view of the structure of the coaxial speaker according to the present invention.

Fig. 2 is an exploded view of the coaxial speaker of the present invention.

Fig. 3 is a top view of a coaxial speaker according to the present invention.

Fig. 4 is a sectional view of section a-a in fig. 3.

The reference signs are: 1-support, 2-high pitch diaphragm, 3-high pitch voice coil, 4-upper shell, 5-lower shell, 6-low pitch elastic sheet, 7-low pitch diaphragm, 8-low pitch voice coil, 9-high pitch washer, 10-high pitch magnet, 11-public magnetizer, 110-magnetic conductive column, 111-magnetic conductive sleeve, 12-low pitch magnet, 13-low pitch washer, 14-fixing ring, 141-first annular groove, 142-second annular groove and 50-tone hole.

Detailed Description

To facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and accompanying fig. 1-4.

Examples

As shown in fig. 1-4, a coaxial speaker of dual magnetic circuit, includes high pitch unit, bass unit and connects support 1 of high pitch unit and bass unit, be provided with public magnetic circuit between high pitch unit and the bass unit, the middle part of support 1 is provided with the mesopore that is used for installing public magnetic circuit, high pitch unit and bass unit coaxial setting, high pitch unit sets up in the top of bass unit.

The double-magnetic-circuit coaxial loudspeaker is compact in structure, small in size and good in acoustic characteristic, high-frequency and low-frequency performances can be considered simultaneously by arranging the high-pitch unit and the low-pitch unit, the high-pitch unit and the low-pitch unit adopt a common magnetic circuit system, the magnetic circuit utilization rate and the sensitivity of the coaxial loudspeaker are improved, and magnetic leakage is reduced. The coaxial loudspeaker connects the high pitch unit, the low pitch unit and the public magnetic circuit system into a whole through the bracket 1, and has small occupied space and convenient assembly.

Further, the high pitch unit includes high pitch vibrating diaphragm 2, high pitch voice coil loudspeaker voice coil 3 and goes up casing 4, the lower extreme and the 3 fixed connection of high pitch voice coil loudspeaker voice coil of high pitch vibrating diaphragm 2, the outer fringe and the 4 fixed connection of last casing of high pitch vibrating diaphragm 2.

Further, the bass unit includes casing 5, bass shell fragment 6, bass voice coil 8 and bass vibrating diaphragm 7 down, bass shell fragment 6 sets up in the upper end of casing 5 down, bass vibrating diaphragm 7 sets up in the upper end of bass shell fragment 6, just the outer fringe of bass vibrating diaphragm 7 and the top outer fringe fixed connection of casing 5 down, bass voice coil 8 set up in the upper end of bass vibrating diaphragm 7 and with 6 electric connection of bass shell fragment. Specifically, the bass spring 6 is a metal spring, and the bass spring 6 is used for electrically connecting with the bass voice coil 8 and an external circuit.

Further, public magnetic circuit includes high pitch china 9, high pitch magnet 10, public magnetizer 11, bass magnet 12 and the bass china 13 that from the top down set gradually, high pitch china 9, high pitch magnet 10 and public magnetizer 11 form the high pitch magnetic circuit of high pitch unit, public magnetizer 11, bass magnet 12 and bass china 13 form the bass magnetic circuit of bass unit. Specifically, the high pitch washer 9, the high pitch magnet 10, the public magnetizer 11, the low pitch magnet 12 and the low pitch washer 13 are sequentially bonded through an adhesive, and are stable in connection and fixed in position.

Further, the common magnetizer 11 includes a magnetic conductive column 110 and a magnetic conductive sleeve 111, the magnetic conductive sleeve 111 is circular, and the magnetic conductive column 110 is installed in the magnetic conductive sleeve 111. The flux sleeve 111 is used for separating the treble magnetic circuit and the bass magnetic circuit.

Further, the polarity of the contact surface of the tweeter magnet 10 and the common magnetic conductor 11 is opposite to the polarity of the contact surface of the woofer magnet 12 and the common magnetic conductor 11. In this embodiment, the one side of high pitch magnet 10 and the contact of high pitch china 9 is the S utmost point, high pitch magnet 10 is kept away from high pitch china 9 and is the N utmost point with the one side of public magnetizer 11 contact, the one side of low pitch magnet 12 and the contact of bass china 13 is the N utmost point, low pitch magnet 12 is kept away from bass china 13 and is the S utmost point with the one side of public magnetizer 11 contact. The coaxial loudspeaker improves the magnetic flux by connecting the high pitch magnet 10 and the low pitch magnet 12 with opposite polarities in series to form a common magnetic circuit system, thereby improving the sensitivity of the coaxial loudspeaker and reducing distortion.

Further, the lower end portion of the high pitch voice coil 3 extends into the high pitch magnetic circuit, and the upper end portion of the low pitch voice coil 8 extends into the low pitch magnetic circuit.

Further, a fixing ring 14 is arranged between the periphery of the common magnetic circuit system and the bracket 1, and the fixing ring 14 is sleeved outside the common magnetic circuit system and connected with the bracket 1. Specifically, the inside wall of the fixed ring 14 is fixedly connected with the flux sleeve 111, so that the sound production cavity of the coaxial speaker is divided into a high sound cavity and a low sound cavity, and the high sound cavity and the low sound cavity are relatively independent, so that interference is reduced.

Further, the upper end of the fixing ring 14 is fixedly connected with the upper shell 4, and the lower end of the fixing ring 14 is fixedly connected with the bracket 1. Specifically, the upper end of the outer side wall of the fixing ring 14 is concavely provided with a first annular groove 141, the first annular groove 141 is used for being clamped with the bottom end of the upper shell 4, the lower end of the outer side wall of the fixing ring 14 is concavely provided with a second annular groove 142, and the second annular groove 142 is used for being clamped with the bottom end of the bracket 1.

Further, the lower housing 5 is provided with a plurality of tuning holes 50, and the plurality of tuning holes 50 are distributed in an annular array. The sound adjusting hole 50 is arranged to be beneficial to balancing air pressure of an inner cavity of the earphone and enhancing heat dissipation performance of the earphone, and can be matched with the tuning paper and the tuning cotton to play a good tuning role according to requirements.

Claims

1. A dual magnetic circuit coaxial speaker, characterized in that: including high pitch unit, bass unit and the support of connecting high pitch unit and bass unit, be provided with public magnetic circuit between high pitch unit and the bass unit, the middle part of support is provided with the mesopore that is used for installing public magnetic circuit, high pitch unit and the coaxial setting of bass unit, high pitch unit sets up in the top of bass unit.

2. A dual magnetic circuit coaxial speaker as claimed in claim 1, wherein: the high pitch unit includes high pitch vibrating diaphragm, high pitch voice coil loudspeaker voice coil and last casing, the lower extreme and the high pitch voice coil loudspeaker voice coil fixed connection of high pitch vibrating diaphragm, the outer fringe and the last casing fixed connection of high pitch vibrating diaphragm.

3. A dual magnetic circuit coaxial speaker as claimed in claim 2, wherein: the bass unit includes casing, bass shell fragment, bass voice coil loudspeaker voice coil and bass vibrating diaphragm down, the bass shell fragment sets up in the upper end of casing down, the bass vibrating diaphragm sets up in the upper end of bass shell fragment, just the outer fringe of bass vibrating diaphragm and the top outer fringe fixed connection of casing down, the bass voice coil loudspeaker voice coil set up in the upper end of bass vibrating diaphragm and with bass shell fragment electric connection.

4. A dual magnetic circuit coaxial speaker as claimed in claim 3, wherein: public magnetic circuit includes high pitch china, high pitch magnet, public magnetizer, bass magnet and the bass china that from the top down set gradually, high pitch china, high pitch magnet and public magnetizer form the high pitch magnetic circuit of high pitch unit, public magnetizer, bass magnet and bass china form the bass magnetic circuit of bass unit.

5. A dual magnetic circuit coaxial speaker as claimed in claim 4, wherein: the public magnetizer comprises a magnetic conduction column and a magnetic conduction sleeve, the magnetic conduction sleeve is in a ring shape, and the magnetic conduction column is arranged in the magnetic conduction sleeve.

6. A dual magnetic circuit coaxial speaker as claimed in claim 4, wherein: the polarity of the contact surface between the high pitch magnet and the public magnetizer is opposite to that of the contact surface between the low pitch magnet and the public magnetizer.

7. A dual magnetic circuit coaxial speaker as claimed in claim 4, wherein: the lower tip of high pitch voice coil loudspeaker voice coil stretches into in the high pitch magnetic circuit, the upper end of bass voice coil loudspeaker voice coil.

8. A dual magnetic circuit coaxial speaker as claimed in claim 1, wherein: a fixing ring is arranged between the periphery of the public magnetic circuit system and the support, and the fixing ring is sleeved outside the public magnetic circuit system and connected with the support.

9. A dual magnetic circuit coaxial speaker as claimed in claim 8, wherein: the upper end of the fixing ring is fixedly connected with the upper shell, and the lower end of the fixing ring is fixedly connected with the support.

10. A dual magnetic circuit coaxial speaker as claimed in claim 3, wherein: the lower shell is provided with a plurality of sound adjusting holes, and the plurality of sound adjusting holes are distributed in an annular array.