WO2022134274A1

WO2022134274A1 - Loudspeaker

Info

Publication number: WO2022134274A1
Application number: PCT/CN2021/075034
Authority: WO
Inventors: 何朝阳; 杨磊
Original assignee: 常州阿木奇声学科技有限公司
Priority date: 2020-12-21
Filing date: 2021-02-03
Publication date: 2022-06-30
Also published as: CN214413032U; CN214675646U; WO2022134318A1

Abstract

Provided is a loudspeaker. The loudspeaker comprises a housing, and a magnetic circuit system and a vibration system which are disposed in the housing. The vibration system comprises a voice coil which can generate vibration under the action of a magnetic field of the magnetic circuit system, and a diaphragm which is driven by the voice coil. The magnetic circuit system comprises a first magnet and a second magnet, which are disposed on two sides, in a first direction, of the vibration system. The first magnet comprises a middle magnet and at least two side magnets, which are disposed on two sides, in a second direction, of the middle magnet. In the loudspeaker, a first magnetic induction line is formed between the middle magnet and each side magnet of the first magnet, and a second magnetic induction line is formed between the first magnet and the second magnet, such that the magnetic field is enhanced, and the overall sensitivity of the loudspeaker is increased.

Description

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相关申请的交叉引用CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority of the Chinese patent application with the application number 202023104636.0 and the invention name "Speaker" filed with the China Patent Office on December 21, 2020, the entire contents of which are incorporated into this application by reference.

technical field

The utility model relates to the technical field of audio frequency.

Background technique

The speaker includes a diaphragm, a voice coil and a magnet. Usually, a magnet is placed under the voice coil. The voice coil vibrates under the action of a magnetic field, which drives the diaphragm to vibrate. The structure of the voice coil and magnet of many speakers is simple, and the overall sensitivity of the speaker is low.

technical problem

The technical problem to be solved by the present invention is to provide an improved loudspeaker for the above-mentioned defects in the related art.

technical solutions

The technical solution adopted by the present invention to solve the technical problem includes: providing a horn, comprising a housing, a magnetic circuit system and a vibration system arranged in the housing, the vibration system comprising a A voice coil that vibrates under the action of a magnetic field and a diaphragm driven by the voice coil, the magnetic circuit system includes a first magnet and a second magnet arranged on both sides of the vibration system in the first direction, the The first magnet includes a middle magnet and at least two side magnets provided on both sides of the middle magnet in the second direction.

Preferably, the second magnet is provided inside the housing or embedded in the housing.

Preferably, the casing is provided with a second opening penetrating the inside and outside, and the second magnet is embedded in the second opening.

Preferably, the second magnet is provided on the inner side of the housing, and the inner side of the housing is provided with a positioning portion matched with the outer side of the second magnet.

Preferably, the first magnet is provided inside the housing or embedded in the housing.

Preferably, an embedding groove is provided on the inner side of the casing, and the first magnet is embedded in the embedding groove.

Preferably, the casing is provided with a first opening through the inside and outside that matches the shape of the first magnet, and the first magnet is embedded in the first opening.

Preferably, the position of the first magnet corresponds to the middle magnet.

Preferably, the number of the second magnet is one, and the width of the second magnet corresponds to the width of the middle magnet.

Preferably, the first direction is perpendicular to the second direction.

Preferably, the voice coil is provided on a side of the diaphragm facing the first magnet and/or a side facing the second magnet.

Preferably, the diaphragm is provided between the first magnet and the second magnet.

Preferably, the horn includes two vibration systems arranged at intervals in the first direction, the magnetic circuit system includes two sets of the first magnets arranged at intervals in the first direction, the The two vibration systems are provided between the two magnetic circuit systems, and the second magnet is provided between the two vibration systems.

beneficial effect

Implementing the technical solution of the present utility model has at least the following beneficial effects: in the speaker, a first magnetic field line is formed between the middle magnet and the side magnet of the first magnet, and a second magnet is formed between the first magnet and the second magnet. Magnetic field lines, the magnetic field increases, the overall sensitivity of the speaker will increase.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only for the present utility model. For some novel embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 is a perspective view of a speaker according to some embodiments of the present invention.

FIG. 2 is a schematic diagram of the internal structure of the horn according to the first embodiment of the present invention (S and N in the figure represent the polarity of the magnet).

FIG. 3 is a partial enlarged view of part A in FIG. 2 .

FIG. 4 is a schematic diagram of the internal structure of the speaker according to the second embodiment of the present invention (S and N in the figure represent the polarity of the magnet).

FIG. 5 is a partial enlarged view of part B in FIG. 4 .

6 is a schematic diagram of the positional relationship between the first magnet and the second magnet of the horn according to some embodiments of the present invention.

FIG. 7 is a schematic diagram of the internal structure of the speaker according to the fourth embodiment of the present invention.

FIG. 8 is a schematic diagram of the internal structure of the speaker according to the fifth embodiment of the present invention.

FIG. 9 is a schematic diagram of the internal structure of the speaker according to the sixth embodiment of the present invention.

FIG. 10 is a schematic diagram of the internal structure of the speaker according to the seventh embodiment of the present invention.

FIG. 11 is a schematic diagram of the internal structure of the horn according to the eighth embodiment of the present invention.

FIG. 12 is a schematic diagram of the internal structure of the horn according to the ninth embodiment of the present invention.

13 is a schematic diagram of the internal structure of the horn according to the tenth embodiment of the present invention.

14 is a schematic diagram of the internal structure of the horn according to the eleventh embodiment of the present invention.

The symbols in the figure represent: magnetic circuit system 1, first magnet 11, middle magnet 111, side magnet 112, second magnet 12, first magnetic field line 13, second magnetic field line 14, vibration system 2, diaphragm 21. Voice coil 22, housing 3, upper cover 31, lower cover 32, first direction 41, second direction 42, third direction 43, first opening 3a, second opening 3b, positioning portion 3c.

Embodiments of the present invention

In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be understood that if "front", "back", "up", "down", "left", "right", "vertical", "horizontal", "vertical", "horizontal", "bottom", "vertical", "vertical", The orientation or positional relationship indicated by "top", "bottom", "inner", "outer", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, constructed and operated in a specific orientation, only It is for the convenience of describing the technical solution, rather than indicating that the referred device or element must have a specific orientation, so it should not be construed as a limitation of the present invention. It should also be noted that, unless otherwise expressly specified and limited, terms such as "installed", "connected", "connected", "fixed" and "arranged" should be understood in a broad sense, for example, it may be a fixed connection , it can also be detachable connection, or integrated; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship between the two elements. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element, or one or more intervening elements may also be present. If the terms "first", "second", "third", etc. appear in the text only for the convenience of describing the technical solution, and should not be understood as indicating or implying the relative importance or the number of the indicated technical features, Thus, a feature defined as "first", "second", "third", etc., may expressly or implicitly include one or more of that feature. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the following description, for the purpose of illustration rather than limitation, specific details such as specific system structures and technologies are set forth in order to provide a thorough understanding of the embodiments of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

1-6, a horn in an embodiment of the present invention includes a housing 3, a magnetic circuit system 1 and a vibration system 2 arranged in the housing 3, and the vibration system 2 includes a The voice coil 22 vibrating under the action of the magnetic field and the diaphragm 21 driven by the voice coil 22, the magnetic circuit system 1 includes the first magnet 11 and the second magnet 12 arranged on both sides of the first direction 41 of the vibration system 2, The first magnet 11 includes a middle magnet 111 and at least two side magnets 112 provided on both sides of the middle magnet 111 in the second direction 42 .

In the speaker, the first magnetic field line 13 is formed between the middle magnet 111 and the side magnet 112 of the first magnet 11, and the second magnetic field line 14 is formed between the first magnet 11 and the second magnet 12, and the magnetic field is enhanced, according to The left-hand rule F=BIL, when B increases, F also increases, the force on the voice coil 22 increases, and the overall sensitivity of the speaker increases. The shape of the casing 3 may be square or circular. The speaker can be applied to speaker fields such as earphone speakers, cell phone receivers, cell phone speakers and notebook speakers.

Figures 2-5 and 7-14 illustrate various arrangements of the first magnet 11 and the second magnet 12.

The second magnet 12 is provided inside the casing 3 or embedded in the casing 3 . Preferably, the housing 3 includes an upper cover 31 and a lower cover 32, and the second magnet 12 is disposed inside the upper cover 31 as shown in Figures 2-3 or embedded in the upper cover 31 as shown in Figures 4-5.

Referring to FIGS. 4-5 , the casing 3 may be provided with a second opening 3b penetrating the inside and outside that matches the shape of the second magnet 12 , and the second magnet 12 is embedded in the second opening 3b, preferably, The side surface of the second magnet 12 exposed to the outside of the casing 3 is flush with the outside of the casing 3 .

Referring to FIGS. 2-3 , the second magnet 12 is disposed inside the housing 3 , and may be directly adhered to the inside of the housing 3 , and the housing 3 may be made of plastic or metal. Referring to FIG. 7 , the inner side of the housing 3 may be provided with a positioning portion 3c that matches the outer side of the second magnet 12 . The positioning portion 3c is preferably an annular body surrounding the second magnet 12 , the shape of the annular body is the same as that of the second magnet 12 . The shape of the magnets 12 is matched. During manufacture, the casing 3 can be made of plastic material, the second magnet 12 is first set in the injection mold, and the casing 3 fixed with the second magnet 12 is formed by injection molding, so that the second magnet 12 is embedded in the casing In addition, the housing 3 with the positioning portion 3c can also be injection-molded first, and then the second magnet 12 is positioned by the positioning portion 3c and fixed on the housing 3 , for example, glued to the housing 3 .

The first magnet 11 may be provided inside the casing 3 or embedded in the casing 3 .

Referring to FIGS. 2-3 , the first magnet 11 is provided inside the casing 3 , and may be directly glued to the inside of the casing 3 . Referring to FIG. 8 , an insertion groove is provided on the inner side of the housing 3 , and the first magnet 11 is inserted into the insertion groove. During manufacture, the housing 3 can be made of plastic material, the first magnet 11 is first set in an injection mold, and the housing 3 is molded with the first magnet 11 by injection molding, so that the first magnet 11 is embedded in the housing In addition, it is also possible to inject the casing 3 with the embedding groove first, and then insert the first magnet 11 into the embedding groove. Referring to FIG. 9 , the housing 3 of this embodiment is provided with a positioning portion 3c and an embedding groove, and the first magnet 11 and the second magnet 12 are respectively embedded in the positioning portion 3c and the embedding groove.

Referring to FIG. 10 , the casing 3 may be provided with a first opening 3a that passes through the inside and outside and matches the shape of the first magnet 11, and the first magnet 11 is embedded in the first opening 3a, preferably, The side surface of the first magnet 11 exposed to the outside of the casing 3 is flush with the outside of the casing 3 . Referring to FIG. 11 , the housing 3 of this embodiment is provided with a first opening 3a and a second opening 3b penetrating the inside and outside, and the first magnet 11 and the second magnet 12 are respectively embedded in the first opening 3a and the second opening 3b.

The position of the first magnet 11 corresponds to the middle magnet 111 . The number of the first magnets 11 may be at least one. When the number of the second magnets 12 is one, the width of the second magnet 12 corresponds to the width of the middle magnet 111 , and a second magnetic field line 14 is formed between the middle magnet 111 and the second magnet 12 .

The number of the middle magnets 111 is preferably one. The number of side magnets 112 is preferably two.

The first magnet 11 and/or the second magnet 12 are bar magnets, preferably both are bar magnets.

The first direction 41 is perpendicular to the second direction 42. Preferably, the first direction 41 is a longitudinal direction, and the second direction 42 is a transverse direction. The longitudinal direction of the bar magnet is the third direction 43 , and the first direction 41 , the second direction 42 and the third direction 43 are perpendicular to each other.

In the vibration system 2, the diaphragm 21 is provided between the first magnet 11 and the second magnet 12, the voice coil 22 is provided on the diaphragm 21, the voice coil 22 is preferably a racetrack-shaped voice coil 22, and the position of part of the voice coil 22 Corresponds to the gap between the middle magnet 111 and the side magnets 112 .

Further, the voice coil 22 is disposed on the side of the diaphragm 21 facing the first magnet 11 and/or the side facing the second magnet 12 . 2-3, the voice coil 22 may be provided on the side of the diaphragm 21 facing the first magnet 11; referring to FIG. 12, the voice coil 22 may be provided on the side of the diaphragm 21 facing the second magnet 12; see FIG. 13. The voice coil 22 is provided on the side of the diaphragm 21 facing the first magnet 11 and the side facing the second magnet 12 at the same time, that is, the voice coil 22 is provided on both sides of the diaphragm 21, and the number of the voice coil 22 is At least two.

Referring to FIG. 14 , the speaker may include two vibration systems 2 arranged at intervals in the first direction 41 , each of the vibration systems 2 includes the vibration membrane 21 and the voice coil 22 , and a sound The ring 22 is arranged on a diaphragm 21, the magnetic circuit system 1 includes two sets of the first magnets 11 arranged at intervals in the first direction 41, and the two vibration systems 2 are arranged on the Between the two magnetic circuit systems 1 , the second magnet 12 is provided between the two vibration systems 2 .

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications, combinations and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the scope of the claims of the present invention.

Claims

A horn, characterized by comprising a housing (3), a magnetic circuit system (1) and a vibration system (2) arranged in the housing (3), the vibration system (2) comprising A voice coil (22) that vibrates under the action of the magnetic field of the magnetic circuit system (1) and a diaphragm (21) driven by the voice coil (22), the magnetic circuit system (1) comprising: A first magnet (11) and a second magnet (12) on both sides in the first direction (41) of the system (2), the first magnet (11) including a middle magnet (111) and a magnet (111) provided in the middle At least two side magnets (112) on both sides in the second direction (42) of the magnet (111).
The horn according to claim 1, characterized in that, the second magnet (12) is provided inside the casing (3) or embedded in the casing (3).
The horn according to claim 2, characterized in that, the casing (3) is provided with a second opening (3b) penetrating the inside and outside, and the second magnet (12) is embedded in the second opening (3b). )middle.
The horn according to claim 2, characterized in that, the second magnet (12) is provided inside the casing (3), and the inside of the casing (3) is provided with the second magnet (12) ) on the outside of the matching positioning portion (3c).
The horn according to claim 1, characterized in that, the first magnet (11) is provided inside the casing (3) or embedded in the casing (3).
The loudspeaker according to claim 1, characterized in that, an embedding groove is provided inside the casing (3), and the first magnet (11) is embedded in the embedding groove.
The horn according to claim 1, characterized in that, the casing (3) is provided with a first opening (3a) penetrating inside and outside and matching the shape of the first magnet (11), the first magnet (11). (11) is embedded in the first opening (3a).
The horn according to claim 1, characterized in that, the position of the first magnet (11) corresponds to the middle magnet (111).
The speaker according to claim 5, characterized in that, the number of the second magnet (12) is one, and the width of the second magnet (12) corresponds to the width of the middle magnet (111).
The horn according to claim 1, wherein the first direction (41) is perpendicular to the second direction (42).
The speaker according to claim 1, characterized in that, the voice coil (22) is provided on the side of the diaphragm (21) facing the first magnet (11) and/or facing the second magnet (11) one side of the magnet (12).
The speaker according to claim 1, characterized in that, the diaphragm (21) is provided between the first magnet (11) and the second magnet (12).
The horn according to claim 1, characterized in that, the horn comprises two vibration systems (2) arranged at intervals in the first direction (41), and the magnetic circuit system (1) comprises a Two sets of the first magnets (11) arranged at intervals in the first direction (41), the two vibration systems (2) are arranged between the two magnetic circuit systems (1) , the second magnet (12) is arranged between the two vibration systems (2).