阅读说明：本技术 一种扬声器磁路、振膜组件和大功率扬声器 (Loudspeaker magnetic circuit, vibrating diaphragm assembly and high-power loudspeaker ) 是由 张�杰 于 2021-09-02 设计创作，主要内容包括：本发明公开了一种扬声器磁路、振膜组件和大功率扬声器,其中,根据本发明的扬声器磁路,提供了一种振膜体驱动方案,磁路系统进行前置设计,曝露于外环境空间中,工作过程里能够直接受到来自振膜/锥盆的气流。该结构为工作散热提供新的高效解决方案。另一方面,发明的振膜组件为振膜体的运动提供优良支撑,振膜体的运动更线性,能够在超大功率工况下保证振膜体的位移量不超过极限值,振膜体的形变小、避免了有害的震动,从而利于理想的发声表现,失真小；同时利于音圈的保护。通过有限的实验验证,本发明的大功率扬声器其低音的功率承受能力优良,瞬间承受性能达到2000W/10ms,连续功率达到220-250W(IEC标准)。(The invention discloses a loudspeaker magnetic circuit, a diaphragm component and a high-power loudspeaker, wherein a diaphragm body driving scheme is provided according to the loudspeaker magnetic circuit provided by the invention, a magnetic circuit system is designed in front, is exposed in an external environment space, and can directly receive air flow from a diaphragm/cone in the working process. This structure provides a new efficient solution for work heat dissipation. On the other hand, the vibrating diaphragm assembly provides excellent support for the movement of the vibrating diaphragm body, the movement of the vibrating diaphragm body is more linear, the displacement of the vibrating diaphragm body can be ensured not to exceed a limit value under an ultrahigh-power working condition, the deformation of the vibrating diaphragm body is small, and harmful vibration is avoided, so that ideal sound production performance is facilitated, and the distortion is small; and simultaneously, the protection of the voice coil is facilitated. Limited experiments prove that the high-power loudspeaker has excellent bass power bearing capacity, the instantaneous bearing performance reaches 2000W/10ms, and the continuous power reaches 220-250W (IEC standard).)

1. A magnetic circuit for a loudspeaker, comprising: the magnetic bowl comprises a bowl frame body, a rear support body and a magnetic circuit system, wherein the magnetic circuit system is arranged on the bowl frame body, the annular opening of a magnetic gap channel faces the direction of the rear support body, the magnetic circuit system is provided with a magnetic conduction column part and a magnetic conduction assembly, the magnetic conduction column part is provided with an upright post and an end part connected with the upright post, the end part is connected with the rear support body, the magnetic conduction assembly is provided with an upper clamping plate, a magnet assembly and a magnetic conduction bowl, the magnetic conduction bowl is arranged on the bowl frame body, the bowl opening of the magnetic conduction bowl faces the rear support body, the upper clamping plate is positioned at the bowl bottom of the magnetic conduction bowl and is in magnetic conduction connection with the magnetic conduction bowl and the upright post, a space for mounting the magnet assembly is formed between the upper clamping plate and the end part, the magnet assembly is provided with a lower clamping plate and permanent magnets attached to two symmetrical end faces of the lower clamping plate, and the permanent magnets, the lower clamping plate and the permanent magnets are symmetrically attached to the two end faces of the lower clamping plate, The upper clamping plate and the side wall of the magnetic conduction bowl jointly form the magnetic gap channel.

2. A magnetic circuit for a loudspeaker according to claim I, wherein: the inner periphery of the bowl opening is provided with a bulge portion which extends inwards along the radial direction of the bowl opening, the lower clamping plate is provided with an extending end facing the bulge portion, and the extending end and the bulge portion form a contraction opening of the magnetic gap channel.

3. A magnetic circuit for a loudspeaker according to claim 2, wherein: and a space is arranged between the outer circumference of the upright post and one side edge of the lower clamping plate and one side edge of the permanent magnet.

4. A diaphragm assembly applied to the magnetic circuit of a speaker according to any one of claims 1 to 3, wherein: the diaphragm comprises a diaphragm body, a voice coil, a lower centering support sheet and an upper centering folding ring, wherein a basin opening of the diaphragm body is arranged on the basin frame body, one end opening of the voice coil is arranged on a contraction opening of the diaphragm body and seals the contraction opening, the other end opening of the voice coil faces upwards, and the voice coil is integrally sleeved in the magnetic gap channel in a vertical upward posture in a matching manner; the lower centering disk is arranged on the rear support body, one port extends to the corresponding position of the lower centering disk and is connected with the lower centering disk, and two ends of the upper centering folding ring are respectively connected with the corresponding positions of the diaphragm body and the magnetic conduction bowl.

5. A diaphragm assembly as claimed in claim 4, wherein: one end of the upper centering corrugated ring is connected to the outer surface of the side wall, the other end of the upper centering corrugated ring is connected to a preset position of the diaphragm body, and the preset position is a position deviated from the middle point of the conical bus of the diaphragm body.

6. A diaphragm assembly as claimed in claim 4, wherein: the magnetic circuit system is positioned in a space formed by the front support body and the inner conical surface lock of the diaphragm body, and the front support body is provided with a hole structure for transmitting sound generated by the diaphragm body to the external environment.

7. The diaphragm assembly of claim 5 wherein: the diaphragm body, go up centering corrugated ring, down centering a piece with the after-poppet body corresponds to be connected, constitutes jointly the dustproof space of voice coil loudspeaker voice coil.

8. A high power speaker, characterized by: comprising the loudspeaker magnetic circuit of claims 1 to 2 and the diaphragm assembly of claims 4 to 7.

9. A high power speaker as claimed in claim 8, wherein: the basin frame body is further provided with an annular pressing strip, and the pressing strip corresponds to the peripheral position of the basin opening.

10. A high power speaker as claimed in claim 9, wherein: the rear support body is provided with a dustproof cover and a structure hole communicated with an external environment space, and the dustproof cover covers the structure hole.

Technical Field

The invention relates to a loudspeaker magnetic circuit, a diaphragm assembly and a high-power loudspeaker.

Background

Because the professional sound boxes are used for playing sound in a dance hall or an outdoor stage by using a high-power amplifier, the working power of the high-power loudspeaker adopted in the professional sound boxes can basically reach the high of more than kilowatt and even more than kilowatt, and overload is easily generated to burn down a voice coil in the using process; in addition, the winding of the voice coil is easy to scatter and bump the wall to burn out under the strong vibration of large volume bass. There are also problems: one is voice coil overheating damage (voice coil burnout, overheating deformation, inter-coil breakdown, etc.); another is that the displacement of the diaphragm body exceeds a limit value, which causes the cone-shaped diaphragm and/or its surrounding elastic parts of the loudspeaker to break down, usually at low frequencies containing many large amplitudes. Therefore, under the same specification and volume of the high-power loudspeaker with the traditional structure, larger power cannot be realized, and the development space of the high-power loudspeaker is limited.

The chinese utility model patent CN208317002U discloses a push-pull type dual-drive high-power speaker, which comprises a frame, a first driving assembly arranged on the frame, and a second driving assembly arranged at the front end of the first driving assembly and symmetrical with the first driving assembly; the first driving assembly and the second driving assembly are connected through a connecting column, a framework is sleeved outside the connecting column, voice coils are arranged at the front end and the rear end of the framework, and the two groups of voice coils are respectively matched with the first driving assembly and the second driving assembly to vibrate and produce sound; the part of the framework between the two groups of voice coils is provided with a vibrating diaphragm and a damper which extend outwards. This overall structure drives two sets of voice coil loudspeaker voice coil phonation through two sets of drive assembly in step, and then reaches the purpose that promotes power and speaker efficiency. However, the overall structure does not depart from the structural configuration of the conventional speaker.

Disclosure of Invention

The invention provides a loudspeaker magnetic circuit, a vibrating diaphragm assembly and a high-power loudspeaker, and aims at the two aspects, wherein one of the two aspects is that the movement of a vibrating diaphragm body is better supported, so that the movement of the vibrating diaphragm body is more linear, the displacement of the vibrating diaphragm body can be ensured not to exceed the limit value in the maximum power working mode, and the protection of a voice coil is facilitated; and secondly, an excellent heat dissipation scheme is provided for the voice coil and the magnet, and the purpose of improving the bearing power under the same specification and volume is achieved.

Based on one of the purposes:

in a first aspect, an embodiment of the present invention provides a magnetic circuit for a speaker, where:

the magnetic bowl comprises a bowl frame body, a rear support body and a magnetic circuit system, wherein the magnetic circuit system is arranged on the bowl frame body, the annular opening of a magnetic gap channel faces the direction of the rear support body, the magnetic circuit system is provided with a magnetic conduction column part and a magnetic conduction assembly, the magnetic conduction column part is provided with an upright post and an end part connected with the upright post, the end part is connected with the rear support body, the magnetic conduction assembly is provided with an upper clamping plate, a magnet assembly and a magnetic conduction bowl, the magnetic conduction bowl is arranged on the bowl frame body, the bowl opening of the magnetic conduction bowl faces the rear support body, the upper clamping plate is positioned at the bowl bottom of the magnetic conduction bowl and is in magnetic conduction connection with the magnetic conduction bowl and the upright post, a space for mounting the magnet assembly is formed between the upper clamping plate and the end part, the magnet assembly is provided with a lower clamping plate and permanent magnets attached to two symmetrical end faces of the lower clamping plate, and the permanent magnets, the lower clamping plate and the permanent magnets are symmetrically attached to the two end faces of the lower clamping plate, The upper clamping plate and the side wall of the magnetic conduction bowl jointly form the magnetic gap channel.

Furthermore, the inner periphery edge of the bowl opening is provided with a bulge part which extends inwards along the radial direction of the bowl opening, the lower clamping plate is provided with an extending end which faces the bulge part, and the extending end and the bulge part form a contraction opening of the magnetic gap channel.

Furthermore, a space is arranged between the outer circumference of the upright post and one side edge of the lower clamping plate and one side edge of the permanent magnet.

In a second aspect, an embodiment of the present invention further provides a diaphragm assembly, which is applied to the above speaker magnetic circuit, and is characterized in that:

the diaphragm comprises a diaphragm body, a voice coil, a lower centering support sheet and an upper centering folding ring, wherein a basin opening of the diaphragm body is arranged on the basin frame body, one end opening of the voice coil is arranged on a contraction opening of the diaphragm body and seals the contraction opening, the other end opening of the voice coil faces upwards, and the voice coil is integrally sleeved in the magnetic gap channel in a vertical upward posture in a matching manner; the lower centering disk is arranged on the rear support body, one port extends to the corresponding position of the lower centering disk and is connected with the lower centering disk, and two ends of the upper centering folding ring are respectively connected with the corresponding positions of the diaphragm body and the magnetic conduction bowl.

Furthermore, one end of the upper centering corrugated ring is connected to the outer surface of the side wall, the other end of the upper centering corrugated ring is connected to a preset position of the diaphragm body, and the preset position is a position deviated from the midpoint of the conical bus of the diaphragm body.

Furthermore, the magnetic circuit system is located in a space formed by the front support body and the inner conical surface lock of the diaphragm body, and the front support body is provided with a hole structure for transmitting sound generated by the diaphragm body to the external environment.

Furthermore, the diaphragm body, the upper centering folded ring, the lower centering support piece and the rear support body are correspondingly connected and jointly form a dustproof space of the voice coil.

Based on the second purpose:

the embodiment of the invention further provides a high-power loudspeaker which comprises the loudspeaker magnetic circuit and the diaphragm assembly.

Furthermore, the basin frame body is also provided with an annular pressing strip, and the pressing strip corresponds to the peripheral position of the basin opening.

Furthermore, the rear support body is provided with a dustproof cover and a structure hole communicated with the external environment space, and the dustproof cover covers the structure hole.

Therefore, in the high-power loudspeaker, the loudspeaker magnetic circuit is positioned at the front end position of the diaphragm body, and in practical assembly application, the loudspeaker magnetic circuit is exposed in an external environment space, so that the heat dissipation of the voice coil is greatly enhanced, the stable working efficiency of the voice coil is realized, and meanwhile, the temperature rise of the magnet part is well controlled.

The invention has the beneficial effects that: compared with the prior art, the loudspeaker magnetic circuit provided by the invention provides a diaphragm body driving scheme, wherein a magnetic circuit system is designed in front of a rear magnetic circuit in a traditional loudspeaker framework, is assembled on the cone frame body and is positioned in front of the diaphragm/cone (exposed in an external environment space), and can directly receive driving airflow from the diaphragm/cone in the actual working process. It provides a new efficient solution for work heat dissipation.

On the other hand, the vibrating diaphragm assembly provides excellent support for the movement of the vibrating diaphragm body, realizes more linear movement of the vibrating diaphragm body, can ensure that the displacement of the vibrating diaphragm body does not exceed a limit value under an ultrahigh-power working condition, has small deformation of the vibrating diaphragm body, avoids harmful vibration, is favorable for ideal sound production performance, and has small distortion; and simultaneously, the protection of the voice coil is facilitated.

Compared with the loudspeaker in the traditional technology, the high-power loudspeaker can achieve the purpose of improving the bearing power under the same specification and volume through the loudspeaker magnetic circuit and the vibrating diaphragm assembly, and the stability of the whole structure is better. Limited experiments prove that the bearing power of the high-power loudspeaker can be one time that of a loudspeaker unit in the traditional technology, and the high-power loudspeaker outputs larger sound pressure in a smaller loudspeaker box. On the other hand, the high-power loudspeaker is beneficial to realizing the flat design, is more suitable for being assembled in an embedded sound box with strict requirements on the thickness of the box body, and has wide application range.

In conclusion, the technology subverts the traditional loudspeaker unit structure and has enough innovativeness.

The invention is further described with reference to the following figures and examples.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention.

FIG. 1 is a schematic view of the overall cross-sectional structure of the present invention.

Detailed Description

The present invention is further described in the following description with reference to specific embodiments and the accompanying drawings, wherein the details are set forth in order to provide a thorough understanding of the present invention, but it is apparent that the present invention can be embodied in many other forms different from the description herein, and one skilled in the art can make similar generalizations and deductions based on the practical application without departing from the spirit of the present invention, and therefore, the scope of the present invention should not be limited by the contents of this specific embodiment.

Referring to fig. 1, a magnetic circuit 1 of a speaker of the present invention includes a tub body 11, a rear bracket body 12, and a magnetic circuit system 13 installed on the tub body 11 and having an annular opening of a magnetic gap channel facing the rear bracket body 12. The magnetic circuit system 13 of the present embodiment is pre-designed by a post-magnetic circuit in a traditional speaker framework, and the magnetic circuit system 13 is mounted on the frame body 11 and located at a front position of the diaphragm/cone (exposed to an external environment space), and can directly receive a driving airflow from the diaphragm/cone in an actual working process.

The magnetic circuit system 13 of the present embodiment has a magnetically conductive column portion 130 and a magnetically conductive assembly, the magnetically conductive column portion 130 having a stud 1301 and an end 1302 connecting the stud 1301, the end portion 1302 is connected to the rear frame body 12, the magnetic conducting assembly has an upper clamp plate 131, a magnet assembly and a magnetic conducting bowl 132, the magnetic conduction bowl 132 is installed on the bowl frame body 11, a bowl opening of the magnetic conduction bowl 132 faces the rear frame body 12, the upper clamp plate 131 is located at a bowl bottom position of the magnetic conduction bowl 132, and is magnetically connected with the magnetic conduction bowl 132 and the upright column 1301, a space for installing the magnet assembly is formed between the upper clamping plate 131 and the end part 1302, the magnet assembly has a lower plate 133 and permanent magnets 134 attached to both symmetrical end surfaces of the lower plate 133, the permanent magnet 134, the lower clamp plate 133, the upper clamp plate 131 and the side wall of the magnetic conduction bowl 132 together form the magnetic gap channel 100. The upright 1301 and the end portion 1302 of the present embodiment are of an integral structure. Because the magnetic circuit system 13 is designed in a front-mounted manner and is exposed to the external environment space, the airflow driven by the diaphragm/cone can be well used for efficient heat dissipation of the magnetic circuit system 13 during operation, and thus the problem of magnetic attenuation of the permanent magnet 134 due to temperature rise is remarkably solved. With respect to this technical effect, the present invention can employ a neodymium magnet/rare earth magnet having superior performance, achieve superior magnetic field strength, and achieve miniaturization in terms of volume and weight, compared to conventional ferrite magnetic circuits.

According to the above technical solution of the present invention, further, the inner circumferential edge of the bowl opening of the magnetic conducting bowl 132 of the present embodiment is provided with a protruding portion 1320 extending inward in the radial direction of the bowl opening, the lower plate 133 is provided with an extending end 1330 facing the protruding portion 1320, and the extending end 1330 and the protruding portion 1320 form a contraction opening of the magnetic gap channel 100. A raised part 1320 is provided, wherein the bowl mouth of the magnetic conducting bowl 132 is slightly contracted, the raised part 1320 is integrally formed with an inner circumferential surface, and the circumferential inner wall of the raised part 1320 is perpendicular to the ground plane; an extension end 1330 is provided having an outer circumferential surface corresponding to the location of the inner circumferential wall, the outer circumferential wall of the extension end 1330 being symmetrically parallel to the inner circumferential wall. The protruding portion 1320 and the extension end 1330 are provided to make the magnetic gap channel 100 slightly narrow at the opening, and the horizontal width dimension of the space below the magnetic gap channel 100 is larger than that at the opening. The structural design effectively achieves a uniform magnetic field, thereby reducing distortion. Thus, the magnetic field in the magnetic gap channel 100 has good symmetry, and the stray field outside the magnetic gap is more symmetric than in the conventional structure. Greatly beneficial to the sound performance.

Further, a space is provided between the outer circumference of the upright 1301 and one side of the lower clamping plate 133 and the permanent magnet 134. Structural design is reasonable, does benefit to the heat dissipation.

The invention relates to a diaphragm component 2, which is applied to the loudspeaker magnetic circuit 1 and comprises:

the diaphragm body 21, the voice coil 22, the lower centering support piece 23 and the upper centering folded ring 24, wherein the basin mouth of the diaphragm body 21 is arranged on the basin frame body 11, one port of the voice coil 22 is arranged on the contraction port of the diaphragm body 21 and seals the contraction port, the other port is upward, and the voice coil 22 is integrally sleeved in the magnetic gap channel 100 in a vertical upward posture; the lower centering branch piece 23 is installed on the rear support body 12, one port extends to a corresponding position of the lower centering branch piece 23 and is connected with the lower centering branch piece 23, and two ends of the upper centering folded ring 24 are respectively connected to corresponding positions of the diaphragm body 21 and the magnetic conduction bowl 132. The voice coil 22 of this embodiment is connected to the bottom opening of the diaphragm body 21 in a vertical state, and the upper port faces upward. The voice coil 22 is configured to telescope up into the air gap channel 100, unlike conventional speaker configurations. The lower centering branch piece 23 is arranged in the rear support body 12 in a horizontal state, and one port is in transmission connection with the lower centering branch piece 23 and seals the contraction port. The upper centering collar 24 is used to provide the same support as the lower centering disk 23. In a specific technical solution, the upper centering corrugated rim 24 is located at a front side position of the port.

According to the above technical solution of the present invention, further, one end of the upper centering folded ring 24 of the present embodiment is connected to the outer surface of the sidewall, and the other end is connected to a predetermined position of the diaphragm body 21, where the predetermined position is a position deviated from the midpoint of the conical generatrix of the diaphragm body 21.

The structure and the structural mechanical property of the upper centering corrugated rim 24 are different from those of the lower centering branch piece 23, and the structural mechanical properties of the upper centering corrugated rim and the lower centering branch piece are preset according to the production design requirements. The upper centering corrugated rim 24 and the lower centering branch piece 23 provide excellent support for the movement of the diaphragm body 21 together; on one hand, the motion of the diaphragm body 21 is more linear, the displacement of the diaphragm body 21 is ensured not to exceed the limit value under the maximum power working mode, and the voice coil 22 is protected; on the other hand, the sound performance is improved, the distortion is small, and under the working condition of ultrahigh power, the deformation of the diaphragm body 21 is small, and harmful vibration is avoided. Compared with the traditional structure, the diaphragm body 21 is not easy to deform when stressed, and can properly reduce the rigidity requirement of the diaphragm body according to the design requirement in the production and manufacturing stage so as to achieve the balance adjustment target of rigidity, damping and mass. Is an innovation of the loudspeaker technology.

According to the above technical solution of the present invention, further, the magnetic circuit system 13 is located in a space formed by the front bracket body and the inner conical surface of the diaphragm body 21, and the front bracket body is provided with a hole structure (a sound-emitting hole) for transmitting the sound emitted by the diaphragm body 21 to the external environment. Due to the front design of the magnetic circuit system 13, the loudspeaker is beneficial to realizing the flat design of the loudspeaker, is more suitable for being assembled in an embedded sound box with strict requirements on the thickness of the box body, and has wide application range.

Further, the diaphragm body 21, the upper centering folded ring 24, the lower centering branch piece 23 and the rear support body 12 are correspondingly connected to form a dustproof space of the voice coil 22. The voice coil 22 is in a relatively closed space, and the influence of dust is effectively avoided. The structure is ingenious and reasonable in design.

As an extension of the present invention, the high power speaker 3 of the present invention includes the above speaker magnetic circuit 1, and the above diaphragm assembly 2;

further, basin support body 11 still is provided with annular layering 31, layering 31 corresponds to the peripheral position of basin mouth for speaker itself and the inside dustproof effect of box after the box installation. Further, the rear bracket body 12 is provided with a dust cover 120 and a structure hole communicated with an external environment space, and the dust cover 120 covers the structure hole. In contrast, the voice coil 22 bobbin of the voice coil 22 is provided with a plurality of heat dissipation holes (not shown) along the cylindrical surface of the voice coil 22 bobbin.

The technical effects achieved by the invention are brought forward in two aspects: firstly, the movement of the diaphragm body 21 is more linear by providing excellent support for the movement of the diaphragm body 21, the displacement of the diaphragm body 21 can be ensured not to exceed a limit value under a maximum power working mode, and the voice coil 22 is protected; and secondly, an excellent heat dissipation scheme is provided for the voice coil 22 and the magnet, and the purpose of improving the bearing power under the same specification and volume is achieved. Limited experiments prove that the high-power loudspeaker 3 has excellent bass power bearing capacity, the instantaneous bearing performance reaches 2000W/10ms, and the continuous power reaches 220-250W (IEC standard).

While embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in a variety of fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concepts defined by the claims and the equivalents thereof.