Integrated sound production assembly

Abstract

The present invention provides an integrated sound production assembly, comprising an upper cover and a lower cover which are oppositely arranged, and a sound production unit arranged in an accommodating space defined by the upper cover and the lower cover. The accommodating space is divided into a front cavity and a rear cavity by the sound production unit; the sound production unit comprises a frame, and a vibration system and a magnetic circuit system which are fixed on the frame; the magnetic circuit system is configured to be of a hollow structure in the direction from the front cavity to the rear cavity; an isolation member is provided between the magnetic circuit system and the lower cover; the isolation member isolates the hollow structure from the front cavity; the hollow structure and the isolation member jointly form a middle cavity; and the middle cavity is communicated with the rear cavity. In the integrated sound production assembly of the present invention, the hollow structure is provided in the magnetic circuit system, so that the volume of the rear cavity is increased, and the low-frequency performance of the product is improved.

Description

Integrated sound components Technical Field

[0001] The present invention relates to the field of electroacoustic conversion, and in particular to an integrated sound-generating component. Background Art

[0002] With the advancement of mobile communication technology, integrated sound assemblies are widely used in smart mobile devices such as cell phones, handheld game consoles, and laptop computers. As the voice playback device, the design of the integrated sound assemblies directly affects the communication quality of the product. In particular, the size of the integrated sound assemblies' rear cavity is directly related to the product's acoustic performance.

[0003] The integrated sound assembly in the related art includes a housing with a housing and a sound unit housed therein. The sound unit divides the housing into a front cavity and a rear cavity. The front cavity is the cavity between the sound unit and the sound hole, while the rear cavity can be filled with sound-absorbing particles. Due to the miniaturization and thinness of electronic devices such as mobile phones and tablets, the installation space reserved for the sound assembly is shrinking. As a result, the volume of the rear cavity of the sound assembly is limited, which is not conducive to the low-frequency dive of the sound unit. As a result, the sound produced by the sound assembly is too sharp and the resolution is reduced, seriously affecting the sound quality of the speaker.

[0004] Therefore, it is necessary to propose a new technical solution to solve the above problems. Technical issues

[0005] The object of the present invention is to provide an integrated sound generating assembly which increases the volume of the back cavity to improve the low frequency performance. Technical Solutions

[0006] The technical solution of the present invention is as follows: an integrated sound-emitting component, comprising an upper cover and a lower cover arranged relatively to each other, and a sound-emitting unit placed in a receiving space surrounded by the upper cover and the lower cover, wherein the sound-emitting unit divides the receiving space into a front cavity and a rear cavity, and the sound-emitting unit comprises a basin frame and a vibration system and a magnetic circuit system fixed to the basin frame, wherein the magnetic circuit system is arranged as a hollow structure along the direction from the front cavity to the rear cavity, and an isolation member is arranged between the magnetic circuit system and the lower cover, wherein the isolation member isolates the hollow structure from the front cavity, and the hollow structure and the isolation member together constitute a middle cavity, and the middle cavity is connected to the rear cavity.

[0007] Preferably, the magnetic circuit system includes a lower clamping plate spaced apart from the upper cover, a main magnetic assembly placed on the lower clamping plate, and a secondary magnetic assembly arranged around the main magnetic assembly, and the isolation member is clamped between the main magnetic assembly and the lower cover.

[0008] Preferably, the main magnetic assembly includes a first main magnetic steel placed on the lower clamping plate, a main pole core placed on the first main magnetic steel, and a second main magnetic steel placed on the main pole core; the auxiliary magnetic assembly includes a plurality of auxiliary magnetic steels placed on the lower clamping plate and surrounding the main magnetic assembly, and a secondary pole core placed on the plurality of auxiliary magnetic steels; the isolation member is clamped between the second main magnetic steel and the lower cover; and the hollow structure is formed by passing through the lower clamping plate, the first main magnetic steel, the main pole core, and the second main magnetic steel.

[0009] Preferably, the vibration system includes a diaphragm fixed to the basin frame, an elastic support member arranged opposite to the diaphragm, a skeleton connecting the diaphragm and the elastic support member, and a voice coil driving the diaphragm to vibrate, and the voice coil is fixed to the skeleton and inserted into the magnetic gap formed by the main magnetic assembly and the auxiliary magnetic assembly.

[0010] Preferably, the skeleton includes a main body, a first part extending along the outer periphery of the main body toward the lower clamping plate, and a second part extending along the inner periphery of the main body toward the lower clamping plate, the elastic support member is connected to the first part, and the voice coil is connected to the second part.

[0011] Preferably, the diaphragm includes a first folding ring portion fixed to the basin frame, a second folding ring portion surrounded by the first folding ring portion, and a spherical top portion connecting the first folding ring portion and the second folding ring portion, the inner periphery of the first folding ring portion is fixed to the main body portion, the outer periphery of the second folding ring portion is fixed to the main body portion, the main body portion acts as the spherical top portion, and the inner periphery of the second folding ring portion is fixed to the second main magnet and abuts against the outer surface of the isolation member.

[0012] Preferably, the elastic support member extends an electrical connection portion along the inner surface of the first portion toward the main body, the electrical connection portion is fixed to the main body, and the lead of the voice coil is connected to the electrical connection portion.

[0013] Preferably, the integrated sound-emitting component further includes a breathable isolation member arranged in the rear cavity and spaced apart from the sound-emitting unit, the breathable isolation member divides the rear cavity into a first rear cavity and a second rear cavity, the first rear cavity is filled with sound-absorbing particles, and the second rear cavity is connected to the middle cavity.

[0014] Preferably, the skeleton and the diaphragm are integrally injection-molded. Beneficial effects

[0015] The beneficial effects of the present invention are as follows: under the condition that the volume of the integrated sound-emitting component is certain, the present invention sets the magnetic circuit system of the integrated sound-emitting component as a hollow structure along the direction from the front cavity to the rear cavity, and sets an isolation member between the magnetic circuit system and the lower cover, so that the hollow structure of the magnetic circuit system and the isolation member are arranged to form a middle cavity connected to the rear cavity, thereby increasing the rear cavity volume of the integrated sound-emitting component, improving the low-frequency performance of the integrated sound-emitting component, reducing F0, and improving the acoustic quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] FIG1 is a perspective view of an integrated sound-generating assembly provided by the present invention;

[0017] FIG2 is a cross-sectional view along line AA in FIG1 ;

[0018] FIG3 is an exploded perspective view of the integrated sound-generating assembly provided by the present invention;

[0019] In the picture:

[0020] 100, integrated sound generating assembly; 11, upper cover; 12, lower cover; 13, receiving space; 131, front cavity; 132, rear cavity; 132a, first rear cavity; 132b, second rear cavity; 133, middle cavity; 2, sound generating unit; 21, magnetic circuit system; 211, lower clamping plate; 212, main magnetic assembly; 212a, first main magnet; 212b, main pole core; 212c, second main magnet; 213, auxiliary magnetic assembly; 213a, Auxiliary magnet; 213b, auxiliary pole core; 214, magnetic gap; 22, vibration system; 221, diaphragm; 221a, first folding ring; 221b, second folding ring; 222, elastic support member; 222a, electrical connection part; 223, skeleton; 223a, main body; 223b, first part; 223c, second part; 224, voice coil; 224a, lead; 23, basin frame; 3, isolation member; 4, breathable isolation member. Modes for Carrying Out the Invention

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Referring to Figures 1 to 3, the integrated sound-emitting component 100 provided by the present invention includes an upper cover 11 and a lower cover 12 that are relatively arranged, and a sound-emitting unit 2 placed in a receiving space 13 surrounded by the upper cover 11 and the lower cover 12. The sound-emitting unit 2 divides the receiving space 13 into a front cavity 131 and a rear cavity 132.

[0023] The sound unit 2 includes a frame 23 , a vibration system 22 fixed to the frame 23 , and a magnetic circuit system 21 housed in the frame 23 and driving the vibration system 22 to vibrate.

[0024] The magnetic circuit system 21 includes a lower plate 211 spaced apart from the upper cover 11, a main magnetic assembly 212 positioned on the lower plate 211, and a secondary magnetic assembly 213 surrounding the main magnetic assembly 212. The main magnetic assembly 212 includes a first main magnetic steel 212a positioned on the lower plate 211, a main pole core 212b positioned on the first main magnetic steel 212a, and a second main magnetic steel 212c positioned on the main pole core 212b. The secondary magnetic assembly 213 includes four secondary magnetic steels 213a positioned on the lower plate 211 and surrounding the main magnetic assembly 212, and a secondary pole core 213b positioned on the four secondary magnetic steels 213a. The four secondary magnetic steels 213a are symmetrical about the main magnetic assembly 212 in any direction, enhancing the compactness and stability of the structure. The main magnetic assembly 212 and the secondary magnetic assembly 213 form a magnetic gap 214.

[0025] The vibration system 22 includes a diaphragm 221 fixed to a frame 23, an elastic support member 222 disposed opposite the diaphragm 221, a frame 223 connecting the diaphragm 221 and the elastic support member 222, and a voice coil 224 that drives the diaphragm 221 to vibrate. The voice coil 224 is fixed to the frame 223 and inserted into the magnetic gap 214 formed by the main magnetic assembly 212 and the auxiliary magnetic assembly 213. The integrated sound-generating assembly 100 drives the voice coil 224 through the magnetic field generated in the magnetic gap 214 by the magnetic circuit system 21. The voice coil 224 then drives the diaphragm 221 to vibrate, thereby producing sound.

[0026] The magnetic circuit system 21 of the present invention is set as a hollow structure along the direction from the front cavity 131 to the rear cavity 132. An isolation member 3 is provided between the magnetic circuit system 21 and the lower cover 12. The isolation member 3 isolates the hollow structure from the front cavity 131, and the hollow structure and the isolation member 3 together constitute a middle cavity 133. The middle cavity 133 is connected to the rear cavity 132, thereby increasing the volume of the rear cavity 132 and improving the low-frequency performance of the integrated sound component 100. The increased volume of the rear cavity 132 makes the internal airflow of the sound unit 2 more unobstructed, which is more conducive to heat dissipation of the sound unit 2.

[0027] Further, referring to Figure 2, the integrated sound component 100 also includes a breathable isolation member 4 arranged in the rear cavity 132 and spaced apart from the sound unit 2. The breathable isolation member 4 separates the rear cavity 132 into a first rear cavity 132a and a second rear cavity 132b. The second rear cavity 132b is connected to the middle cavity 133. The first rear cavity 132a is filled with sound-absorbing particles, which can further improve the low-frequency performance.

[0028] Specifically, please refer to Figure 2. The hollow structure is formed by passing through the lower clamping plate 211, the first main magnetic steel 212a, the main pole core 212b and the second main magnetic steel 212c. The isolation member 3 is clamped between the main magnetic assembly 212 and the lower cover 12. Furthermore, the isolation member 3 is clamped between the second main magnetic steel 212c and the lower cover 12.

[0029] Further, referring to Figures 2 and 3, the skeleton 223 includes a main body 223a, a first part 223b extending along the outer periphery of the main body 223a toward the lower clamping plate 211, and a second part 223c extending along the inner periphery of the main body 223a toward the lower clamping plate 211, the elastic support member 222 is connected to the first part 223b, and the voice coil 224 is connected to the second part 223c.

[0030] The diaphragm 221 includes a first folding ring portion 221a fixed to the basin frame 23, a second folding ring portion 221b surrounded by the first folding ring portion 221a, and a spherical top portion connecting the first folding ring portion 221a and the second folding ring portion 221b. The inner periphery of the first folding ring portion 221a is fixed to the main body portion 223a, and the outer periphery of the second folding ring portion 221b is fixed to the main body portion 223a. The main body portion 223a serves as the spherical top portion of the diaphragm 221, the first part 223b is fixed to the first folding ring portion 221a, and the second part 223c is fixed to the second folding ring portion 221b; the inner periphery of the second folding ring portion 221b is fixed to the second main magnet 212c and abuts against the outer surface of the isolation member 3.

[0031] In this embodiment, the skeleton 223 and the diaphragm 221 are integrally injection-molded.

[0032] Please refer to Figures 2 and 3. The elastic support member 222 extends an electrical connection portion 222a along the inner surface of the first portion 223b toward the main body 223a. The electrical connection portion 222a is fixed to the main body 223a to facilitate the connection between the lead 224a of the voice coil 224 and the electrical connection portion 222a. The magnetic field generated by the magnetic circuit system 21 in the magnetic gap 214 drives the voice coil 224, and the voice coil 224 is used to drive the diaphragm 221 to vibrate, thereby producing sound.

[0033] The integrated sound-emitting component of the present invention arranges the magnetic circuit system into a hollow structure along the direction from the front cavity to the rear cavity, and arranges an isolation member between the magnetic circuit system and the lower cover, so that the hollow structure of the magnetic circuit system and the isolation member enclose a middle cavity connected to the rear cavity, thereby increasing the volume of the rear cavity. Therefore, the integrated sound-emitting component makes full use of the space of the magnetic circuit system without changing the overall volume of the integrated sound-emitting component system, increases the volume of the rear cavity, and improves the acoustic performance of the speaker system.

[0034] The above description is only an embodiment of the present invention. It should be pointed out that those skilled in the art can make improvements without departing from the creative concept of the present invention, but these improvements all fall within the scope of protection of the present invention.

Claims

1. An integrated sound generating component, comprising an upper cover and a lower cover which are oppositely arranged, and a sound generating unit disposed in a receiving space defined by the upper cover and the lower cover, wherein the sound generating unit divides the receiving space into a front cavity and a rear cavity, and the sound generating unit comprises a chassis, and a vibration system and a magnetic circuit system fixed to the chassis, and is characterized in that: The magnetic circuit system is arranged in a hollow structure along the direction from the front cavity to the rear cavity. An isolator is provided between the magnetic circuit system and the lower cover. The isolator isolates the hollow structure from the front cavity, and the hollow structure and the isolator together form a middle cavity, which communicates with the rear cavity.

2. The integrated sound generating component according to claim 1, wherein: The magnetic circuit system includes a lower clamping plate spaced from the upper cover, a main magnetic component placed on the lower clamping plate, and an auxiliary magnetic component arranged around the main magnetic component. The isolator is clamped between the main magnetic component and the lower cover.

3. The integrated sound generating component according to claim 2, characterized in that: The main magnetic component includes a first main magnetic steel placed on the lower clamping plate, a main pole core placed on the first main magnetic steel, and a second main magnetic steel placed on the main pole core. The auxiliary magnetic component includes a plurality of auxiliary magnetic steels placed on the lower clamping plate and surrounding the main magnetic component, and an auxiliary pole core placed on the plurality of auxiliary magnetic steels. The isolator is clamped between the second main magnetic steel and the lower cover. The hollow structure is formed by penetrating the lower clamping plate, the first main magnetic steel, the main pole core, and the second main magnetic steel.

4. The integrated sound generating component according to claim 3, characterized in that: The vibration system includes a diaphragm fixed to the chassis, an elastic support member disposed opposite to the diaphragm, a skeleton connecting the diaphragm and the elastic support member, and a voice coil driving the diaphragm to vibrate. The voice coil is fixed to the skeleton and inserted into the magnetic gap formed by the main magnetic component and the auxiliary magnetic component.

5. The integrated sound generating component according to claim 4, wherein: The skeleton includes a main body portion, a first portion extending from the outer peripheral edge of the main body portion towards the lower clamping plate, and a second portion extending from the inner peripheral edge of the main body portion towards the lower clamping plate. The elastic support member is connected to the first portion, and the voice coil is connected to the second portion.

6. The integrated sound generating component according to claim 5, wherein: The diaphragm includes a first folding ring portion fixed to the chassis, a second folding ring portion surrounded by the first folding ring portion, and a spherical top portion connecting the first folding ring portion and the second folding ring portion. The inner peripheral edge of the first folding ring portion is fixed to the main body portion, the outer peripheral edge of the second folding ring portion is fixed to the main body portion, the main body portion serves as the spherical top portion, and the inner peripheral edge of the second folding ring portion is fixed to the second main magnetic steel and abuts against the outer surface of the isolator.

7. The integrated sound generating component according to claim 5, wherein: The elastic support member extends an electrical connection portion towards the main body portion along the inner side surface of the first portion, and the electrical connection portion is fixed to the main body portion. The lead of the voice coil is connected to the electrical connection portion.

8. The integrated sound generating component according to claim 1, wherein: The integrated sound generating component further includes a breathable isolator disposed in the rear cavity and spaced from the sound generating unit. The breathable isolator divides the rear cavity into a first rear cavity and a second rear cavity. The first rear cavity is filled with sound absorbing particles, and the second rear cavity communicates with the middle cavity.

9. The integrated sound generating component according to claim 6, wherein: The skeleton and the diaphragm are integrally injection molded.

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