CN107124686B

CN107124686B - Loudspeaker, assembling method and electronic equipment

Info

Publication number: CN107124686B
Application number: CN201710514518.0A
Authority: CN
Inventors: 周瑜
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2017-06-29
Filing date: 2017-06-29
Publication date: 2021-01-08
Anticipated expiration: 2037-06-29
Also published as: CN107124686A

Abstract

The invention discloses a loudspeaker, an assembly method and electronic equipment, wherein the loudspeaker comprises: the voice coil loudspeaker comprises a basin frame, a magnetic circuit assembly, a diaphragm, a voice coil and a dome; the basin stand is of a frame structure, an accommodating space is formed inside the frame structure, and a first opening communicated with the accommodating space is formed in one side of the frame structure; the magnetic circuit component is arranged in the accommodating space and is fixedly connected with the basin stand; the diaphragm covers the basin frame and seals the first opening; the diaphragm comprises a diaphragm body and a fixing part arranged around the diaphragm body; wherein the first surface of the fixing part is attached to the basin stand; the voice coil is arranged in the accommodating space and fixed on the first surface of the diaphragm body; the dome is fixed on the second surface of the diaphragm body. The loudspeaker is arranged in the sound cavity structure of the electronic equipment, and can form enough sound outlet channels in the sound cavity, thereby ensuring smooth sound transmission and being beneficial to the lightness and thinness of the whole machine.

Description

Loudspeaker, assembling method and electronic equipment

Technical Field

The invention relates to the technical field of electronic products, in particular to a loudspeaker, an assembling method and electronic equipment.

Background

The loudspeaker is a component with a larger volume in the electronic equipment, but with the function diversification of the electronic equipment and the light and thin development of the body, the internal layout space is more and more tense, and the requirements on the structural design and the performance of the loudspeaker are higher and higher.

The existing loudspeaker is provided with a front cover for protecting a loudspeaker diaphragm on a vibration system upper cover. Therefore, under the requirement of lightness and thinness of the machine body, after the loudspeaker is installed in the sound cavity structure of the whole machine side, the sound outlet channel of the loudspeaker in the sound cavity is too small, so that sound cannot be smoothly transmitted, and user experience is influenced.

Disclosure of Invention

The embodiment of the invention provides a loudspeaker, an assembling method and electronic equipment, and aims to solve the problem that a sound outlet channel in a sound cavity is too small after the loudspeaker in the prior art is installed in a complete machine.

In a first aspect, an embodiment of the present invention provides a speaker, including:

the pot rack is of a frame structure, an accommodating space is formed inside the frame structure, and a first opening communicated with the accommodating space is formed in one side of the frame structure;

the magnetic circuit component is arranged in the accommodating space and is fixedly connected with the basin stand;

the diaphragm covers the basin frame and seals the first opening; the diaphragm comprises a diaphragm body and a fixing part arranged around the diaphragm body; wherein the first surface of the fixing part is attached to the frame;

the voice coil is arranged in the accommodating space and is fixed on the first surface of the diaphragm body;

and the dome is fixed on the second surface of the diaphragm body.

In a second aspect, an embodiment of the present invention further provides an assembly method of a speaker, including:

providing a diaphragm, wherein the diaphragm comprises a diaphragm body, a fixing part and a positioning part, the fixing part is arranged around the diaphragm body, and the positioning part is arranged around the fixing part;

securing a dome to the second surface of the diaphragm body;

fixing a positioning bracket on the positioning part;

fixing a voice coil on the first surface of the diaphragm body;

fixing a basin stand comprising an accommodating space on the first surface of the fixing part; wherein the voice coil is positioned in the accommodating space of the basin stand;

cutting off the positioning part and the positioning bracket on the positioning part;

and arranging the magnetic circuit assembly in the accommodating space of the basin stand and fixing the magnetic circuit assembly with the basin stand.

In a third aspect, an embodiment of the present invention further provides an electronic device, including: the loudspeaker comprises a sound cavity support upper cover, a sealing steel sheet, a sound cavity support lower cover and the loudspeaker; wherein the content of the first and second substances,

the upper cover of the sound cavity bracket is provided with an opening;

the sealing steel sheet is arranged on the upper cover of the sound cavity support and seals the opening;

the upper cover of the sound cavity bracket is fixedly connected with the lower cover of the sound cavity bracket, and a cavity is formed between the upper cover of the sound cavity bracket and the lower cover of the sound cavity bracket;

the loudspeaker is arranged in the cavity, and a gap is formed between the fixed part of the diaphragm and the sealing steel sheet.

Thus, in the loudspeaker in the above-mentioned aspect of the invention, the second surface (upper surface) of the fixing portion (the portion of the diaphragm connected to the frame) of the diaphragm is in an empty state, so that the mass of the loudspeaker is reduced, and the thickness of the loudspeaker is reduced. After the loudspeaker in the scheme is arranged in a sound cavity structure of the electronic equipment, a gap is formed between the fixing part of the diaphragm and the inner wall of the sound cavity structure, so that a sufficient sound outlet channel can be formed in the sound cavity, sound can be smoothly transmitted, the thickness of the sound cavity structure is favorably reduced, and the whole machine is favorably thinned.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 shows a cross-sectional view of a loudspeaker according to an embodiment of the invention;

fig. 2 shows an exploded view of a loudspeaker according to an embodiment of the invention;

FIG. 3 shows one of the schematic views of a diaphragm according to an embodiment of the present invention;

fig. 4 shows a flow chart of a method of assembling a loudspeaker according to an embodiment of the invention;

FIG. 5 is a second schematic view of a diaphragm according to an embodiment of the present invention;

FIG. 6 is a schematic view of an embodiment of the present invention securing a dome to a second surface of a diaphragm body;

FIG. 7 is a schematic view illustrating the fixing of the positioning bracket to the positioning portion according to the embodiment of the present invention;

FIG. 8 is a schematic view of an embodiment of the present invention showing the voice coil being secured to the first surface of the diaphragm body;

FIG. 9 shows a schematic view of an embodiment of the invention securing a frame to a first surface of a stationary portion;

FIG. 10 is a schematic view of the positioning portion and the positioning bracket on the positioning portion after being cut away according to the embodiment of the present invention;

fig. 11 shows a cross-sectional view of an electronic device of an embodiment of the invention.

Description of reference numerals:

1. a basin stand; 2. a membrane; 3. a voice coil; 4. a ball top; 5. iron U; 6. a central magnet; 7. a rim magnet; 8. a central magnetic conductive sheet; 9. an edge magnetic conductive sheet; 10. positioning the bracket; 11. an upper cover of the sound cavity bracket; 12. sealing the steel sheet; 13. a lower cover of the sound cavity bracket; 14. a speaker; 15. sealing the foam;

21. a diaphragm body; 211. a central portion; 212. an arch portion; 22. a fixed part; 23. a positioning part.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

Referring to fig. 1 and 2, an embodiment of the present invention provides a speaker including: the voice coil loudspeaker comprises a frame 1, a magnetic circuit assembly, a diaphragm 2, a voice coil 3 and a dome 4.

The basin stand 1 is a frame structure, an accommodating space is formed inside the frame structure, and a first opening communicated with the accommodating space is formed on one side of the frame structure.

The magnetic circuit component is arranged in the accommodating space and is fixedly connected with the basin stand.

The membrane 2 covers the basin stand 1 and closes the first opening. Referring to fig. 3, the diaphragm 2 includes a diaphragm body 21 and a fixing portion 22 provided around the diaphragm body 21; wherein the first surface of the fixing part 22 is attached to the frame 1, and the second surface of the fixing part 22 is in an empty state without any component.

The voice coil 3 is disposed in the accommodating space and fixed on the first surface of the diaphragm body 21. Specifically, the voice coil 3 is bonded to the diaphragm body 21.

The dome 4 is fixed to the second surface of the diaphragm body 21. Specifically, the dome 4 is bonded to the diaphragm body 21.

Wherein, the first surface of the diaphragm body 21 is connected with the first surface of the fixing portion 22 to form a first surface on the diaphragm 2; the second surface of the diaphragm body 21 is connected with the second surface of the fixing portion 22 to form a second surface on the diaphragm 2; the first surface of the membrane 2 and the second surface of the membrane 2 are opposite surfaces on the membrane 2.

Specifically, the basin stand 1 in a frame structure has an accommodating space formed inside, and the accommodating space is respectively communicated with a first opening formed on a first side of the basin stand 1 and a second opening formed on a second side of the basin stand 1. The magnetic circuit component is arranged in the containing space of the basin frame 1 and seals the second opening.

The diaphragm 2 covers the basin frame 1 and closes the first opening. Specifically, a first surface of the fixing portion 22 of the diaphragm 2 is bonded to a first end surface of a first opening formed in the frame 1. In particular, the second surface of the fixed portion 22 of the membrane 2 is in an empty state, wherein the empty state means that no component is mounted on the second surface of the fixed portion 22, such as: any component includes a front cover disposed on the second surface of the fixing portion 22, i.e., the speaker of the embodiment of the present invention does not include a front cover disposed on the second surface of the fixing portion.

Thus, after the loudspeaker is installed in the sound cavity structure of the electronic device, a gap is formed between the fixing part 22 of the diaphragm 2 and the inner wall of the sound cavity structure, so that a sufficient sound outlet channel can be formed in the sound cavity, sound can be smoothly transmitted, the thickness of the sound cavity structure is favorably reduced, and the whole device is favorably thinned.

Referring to fig. 3, the diaphragm body 21 includes: a center portion 211 attached to one surface of the dome 4; an arch portion 212 provided around the center portion 211; the fixing portion 22 is disposed around the arch portion 212.

Specifically, the central portion 211, the arch portion 212, and the fixing portion 22 are integrally formed.

Referring to fig. 2, the magnetic circuit assembly includes: the magnet comprises a U-shaped iron 5, a central magnet 6 arranged on the U-shaped iron 5, a plurality of peripheral magnets 7 arranged on the U-shaped iron 5, a central magnetic conductive sheet 8 arranged on the central magnet 6, and a plurality of peripheral magnetic conductive sheets 9.

Wherein the peripheral magnets 7 are arranged around the central magnet 6, and a gap with a preset distance is formed between the peripheral magnets 7 and the central magnet 6; the peripheral magnetic conductive sheets 9 are arranged on the peripheral magnets 7 in a one-to-one correspondence manner; wherein, the gap is formed between the central magnetic conductive sheet 8 and the peripheral magnetic conductive sheet 9. The gap is an annular gap surrounding the central magnet 6. Specifically, the edge of the central magnet 6 is aligned with the edge of the central magnetic conductive sheet 8; the edge of the peripheral magnet 7 is aligned with the edge of the corresponding peripheral magnetic conductive sheet 9.

Referring to fig. 1, one end of the voice coil 3, which is far away from the diaphragm body 21, is located in the gap, and is arranged at a preset interval with the U-shaped iron.

In this embodiment, when an alternating audio current is passed through the voice coil 3 of the loudspeaker, a corresponding magnetic field is generated in the voice coil 3. This magnetic field generates an interaction force with the magnetic field generated by the magnetic circuit component (permanent magnet) on the speaker. The interaction force between the magnetic field generated by the voice coil 3 and the magnetic field generated by the magnetic circuit assembly causes the voice coil 3 to vibrate in the gap in the magnetic circuit assembly along with the audio current. Since the voice coil 3 is connected to the diaphragm body, the vibration of the voice coil 3 drives the diaphragm body 21 to vibrate, thereby generating the sound with the same waveform as the original audio signal. Wherein, the arch part 212 on the diaphragm body 21 provides a vibration space, ensuring that the diaphragm body 21 can vibrate along with the vibration of the voice coil 3.

Referring to fig. 4, another embodiment of the present invention also provides a speaker assembling method, including:

step 41, providing a membrane.

Referring to fig. 5, the diaphragm 2 includes a diaphragm body 21, a fixing portion 22 provided around the diaphragm body 21, and a positioning portion 23 provided around the fixing portion 22. Wherein, the diaphragm body 21, the fixing portion 22 and the positioning portion 23 are integrally formed.

And step 42, fixing the dome on the second surface of the diaphragm body.

Referring to fig. 5, the diaphragm body 21 includes: a central portion 211 and an arch portion 212 provided around the central portion 211; the fixing portion 22 is disposed around the arch portion 212. The central portion 211, the arch portion 212, the fixing portion 22, and the positioning portion 23 are integrally formed.

Specifically, step 42 includes: securing the dome 4 to a second surface of the center section 211; wherein the second surface of the center portion 211 is a portion of the second surface of the diaphragm body 21. Referring to fig. 6, a schematic view of an embodiment of the present invention is shown for securing the dome 4 to the second surface of the center portion 211. Specifically, one surface of the dome 4 may be bonded to the second surface of the center portion 211.

And 43, fixing the positioning bracket on the positioning part.

Referring to fig. 7, a schematic diagram of fixing the positioning bracket 10 on the positioning portion 23 of the membrane sheet 2 in step 42 according to the embodiment of the present invention is shown. Specifically, the positioning bracket 10 is a frame structure, and the positioning portion 23 on the diaphragm 2 is bonded to one end surface of the positioning bracket 10.

And step 44, fixing the voice coil on the first surface of the diaphragm body.

Specifically, step 44 includes: fixing the voice coil 3 to the first surface of the center portion 211; wherein the first surface of the center portion 211 is a portion of the first surface of the diaphragm body 21. Referring to fig. 8, a schematic diagram of fixing the voice coil 3 to the central portion 211 of the diaphragm 2 in step 43 according to the embodiment of the present invention is shown. Specifically, one end surface of the voice coil 3 may be bonded to the first surface of the center portion 211.

Step 45, fixing the basin stand comprising an accommodating space on the first surface of the fixing part; wherein, the voice coil is arranged in the containing space of the basin frame.

Referring to fig. 9, there is shown a schematic view of the fixing part 22 for fixing the frame 1 on the membrane 2 in step 44. Specifically, a first end surface formed at the first opening of the frame 1 is bonded to the first surface of the fixing portion 22.

And step 46, cutting off the positioning part and the positioning bracket on the positioning part.

Fig. 10 is a schematic diagram illustrating the positioning portion and the positioning bracket on the positioning portion in the step 45 of cutting away in the embodiment of the present invention. Specifically, the positioning portion 23 and the positioning bracket 10 on the positioning portion 23 may be cut by laser.

And step 47, placing the magnetic circuit assembly in the accommodating space of the basin stand and fixing the magnetic circuit assembly with the basin stand.

Specifically, the magnetic circuit assembly is fixed to the frame 1, and the speaker shown in fig. 1 is obtained.

In this embodiment, the dome 4 is a high-strength dome. In the assembly process of the loudspeaker, the positioning support 10 is adopted to position the diaphragm 2, so that the problems of deformation and bonding deviation of the diaphragm 2 in the assembly process are avoided.

Referring to fig. 11, an embodiment of the present invention further provides an electronic device, including: an upper cover 11 of the sound cavity bracket, a sealing steel sheet 12, a lower cover 13 of the sound cavity bracket, and the loudspeaker 14.

Wherein, the upper cover 11 of the sound cavity bracket is provided with an opening; the sealing steel sheet 12 is arranged on the upper cover 11 of the sound cavity bracket and seals the opening; the upper sound cavity support cover 11 is fixedly connected with the lower sound cavity support cover 13, and a cavity is formed between the upper sound cavity support cover 11 and the lower sound cavity support cover 13. Wherein, the connection position of the upper cover 11 and the lower cover 13 of the sound cavity bracket is provided with a sealing foam 15.

A speaker 14 is disposed within the cavity. Wherein, the bottom end of the loudspeaker 14 (the end of the loudspeaker 14 far away from the diaphragm) is fixed with the lower cover 13 of the sound cavity support, narrow glue is applied between the edge part of the frame in the loudspeaker 14 and the upper cover 11 of the sound cavity support for sealing, and a gap (sound outlet channel) is formed between the fixed part of the diaphragm in the loudspeaker 14 and the sealing steel sheet 12.

In the electronic device of the above-mentioned solution, the upper surface (first surface) of the fixing portion of the diaphragm in the speaker 14 is in an empty state, so as to ensure that a sufficient sound channel is formed between the fixing portion and the sealing steel sheet 12, thereby ensuring smooth sound propagation. And this scheme is favorable to reducing the thickness in sound chamber, is favorable to the frivolousization of complete machine.

The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.

Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.

While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.

Claims

1. A loudspeaker, comprising:

the dome is fixed on the second surface of the diaphragm body;

the second surface of the fixing part of the diaphragm is in a vacant state, so that after the loudspeaker is assembled to the electronic equipment, a sufficient sound outlet channel is formed between the fixing part and the sealing steel sheet, and sound is transmitted out of the sound outlet channel.

2. The loudspeaker of claim 1, wherein the diaphragm body comprises:

a central portion attached to a surface of the dome;

an arch portion disposed around the central portion;

the fixing portion is disposed around the arch portion.

3. The loudspeaker of claim 2, wherein the center portion, the arch portion and the retainer portion are integrally formed.

4. The loudspeaker of claim 1, wherein the magnetic circuit assembly comprises:

iron U;

a central magnet arranged on the U iron;

a plurality of peripheral magnets arranged on the U-shaped iron; the peripheral magnets are arranged around the central magnet, and a gap with a preset distance is formed between the peripheral magnets and the central magnet;

the central magnetic conductive sheet is arranged on the central magnet; and the number of the first and second groups,

the peripheral magnetic conductive sheets are arranged on the peripheral magnets in a one-to-one correspondence manner; wherein the gap is formed between the central magnetic conductive sheet and the peripheral magnetic conductive sheet.

5. The loudspeaker of claim 4, wherein an edge of said central magnet is aligned with an edge of said central magnetically permeable plate;

the edges of the peripheral magnets are aligned with the edges of the peripheral magnetic conductive sheets which are correspondingly arranged.

6. The loudspeaker of claim 4 wherein an end of the voice coil distal from the diaphragm body is within the gap.

7. A method of assembling a loudspeaker, comprising:

securing a dome to the second surface of the diaphragm body;

fixing a positioning bracket on the positioning part;

fixing a voice coil on the first surface of the diaphragm body;

placing the magnetic circuit assembly in the accommodating space of the basin stand and fixing the magnetic circuit assembly with the basin stand;

the second surface of the fixing part of the diaphragm in the loudspeaker is in an empty state, so that after the loudspeaker is assembled in the electronic equipment, a sufficient sound outlet channel is formed between the fixing part and the sealing steel sheet, and sound is emitted from the sound outlet channel.

8. The method of assembling a loudspeaker according to claim 7, wherein the diaphragm body comprises: a central portion and an arch portion disposed around the central portion; the fixing part is arranged around the arch part;

the step of securing the dome to the second surface of the diaphragm body includes:

securing a ball top to a second surface of the center portion;

wherein the second surface of the central portion is a portion of the second surface of the diaphragm body.

9. The method of assembling a loudspeaker according to claim 8, wherein said step of securing a voice coil to said first surface of said diaphragm body comprises:

fixing a voice coil to a first surface of the central portion;

wherein the first surface of the central portion is a portion of the first surface of the diaphragm body.

10. The method of assembling a speaker according to claim 8, wherein the step of cutting out the positioning portion and the positioning bracket on the positioning portion includes:

and cutting the positioning part and the positioning bracket on the positioning part by laser.

11. The method of assembling a speaker as claimed in claim 8, wherein the center portion, the arch portion, the fixing portion and the positioning portion are integrally formed.

12. An electronic device, comprising: a sound cavity support upper cover, a sealing steel sheet, a sound cavity support lower cover, and a loudspeaker according to any one of claims 1 to 6; wherein the content of the first and second substances,

the upper cover of the sound cavity bracket is provided with an opening;

13. The electronic device of claim 12, wherein a sealing foam is disposed at a connection position of the upper cover of the sound cavity bracket and the lower cover of the sound cavity bracket.