CN212461132U

CN212461132U - Sound production mechanism of loudspeaker and loudspeaker thereof

Info

Publication number: CN212461132U
Application number: CN202020760172.XU
Authority: CN
Inventors: 饶飞扬; 袁科; 胡启维; 王雯婧; 周彬
Original assignee: Sichuan Secair Security Technology Co ltd
Current assignee: Guanghedian Technology (Guangdong) Co.,Ltd.
Priority date: 2020-05-09
Filing date: 2020-05-09
Publication date: 2021-02-02
Anticipated expiration: 2030-05-09

Abstract

The utility model discloses a sounding mechanism of a loudspeaker and the loudspeaker, which comprises a piezoelectric ceramic buzzing piece and a cone in a round platform shape; the both ends of sound basin have the opening, and piezoceramics buzzing piece sets up and is used for driving the vibration of sound basin on the top of sound basin to constitute a sound chamber that is used for realizing loudspeaker sound production jointly with the sound basin. In the past, the sounding mechanism of the cone loudspeaker needs to fix the cone with a fixed support and form a fine sounding condition with a magnet, the utility model discloses simplify the sounding mechanism of loudspeaker for the sounding mechanism of loudspeaker is simple to assemble, and weight reduction has reduced the technology degree of difficulty of manufacturing loudspeaker, has reduced the weight of loudspeaker, and the installation of loudspeaker is more convenient.

Description

Sound production mechanism of loudspeaker and loudspeaker thereof

Technical Field

The utility model belongs to the communication field especially relates to a sound production mechanism of loudspeaker and loudspeaker thereof.

Background

A horn is a device that converts electrical energy into sound. At present, most of loudspeakers in the market are designed by adopting a cone, and the sound production principle is that current passes through a coil to form a magnetic field to drive the cone to vibrate so as to force air to vibrate and produce sound. The loudspeaker of paper cone formula, the paper cone must use with magnet simultaneously just can produce vibrations sound production, and need fix with the fixed bolster between paper cone and magnet and just can form fine emergence condition in suitable position relatively. The design makes the process of the loudspeaker very complicated, the weight is heavier and the manufacturing cost is higher.

In view of this, a sound generating mechanism for simplifying a speaker is designed, so as to reduce the difficulty of the manufacturing process of the speaker, reduce the weight of the speaker, and reduce the production cost, which is a technical problem to be solved in the field.

SUMMERY OF THE UTILITY MODEL

The utility model provides a sound production mechanism of loudspeaker and loudspeaker thereof to the structure of solving current cone loudspeaker is complicated, problem that weight is heavier partially.

In order to realize the purpose, the utility model discloses a technical scheme as follows:

a sounding mechanism of a loudspeaker comprises a piezoelectric ceramic buzzer and a cone in a shape of a circular truncated cone; the both ends of sound basin have the opening, and piezoceramics buzzing piece sets up and is used for driving the vibration of sound basin on the top of sound basin to constitute a sound chamber that is used for realizing loudspeaker sound production jointly with the sound basin.

Furthermore, a circular arc-shaped resonance cavity is arranged in the sound cavity, wherein the center line of the circular arc-shaped resonance cavity is overlapped with the middle point of the piezoelectric ceramic buzzer and is close to the piezoelectric ceramic buzzer.

Furthermore, the positive center of sound basin is towards sound chamber direction is provided with the circular arc arch, the top of sound basin is equipped with the seal groove that is used for assembling piezoceramics buzzer patterns.

Furthermore, the piezoelectric ceramic buzzer piece is fixed in the sealing groove through a sealing glue.

Furthermore, a plurality of annular reinforcing ribs are arranged in the sound cavity.

A loudspeaker comprises a shell and an electric element packaged in the shell, and comprises the loudspeaker sounding mechanism, wherein the sounding mechanism is packaged in the shell, and a piezoelectric ceramic buzzer piece is electrically connected with the electric element.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) the utility model discloses a loudspeaker's sound production mechanism, the bottom of sound basin has the opening, and piezoceramics buzzing piece sets up and drives the sound basin vibration on the top of sound basin to constitute a sound chamber that is used for realizing loudspeaker sound production jointly with the sound basin. The utility model discloses improved cone loudspeaker in the past need be between cone and magnet with the fixed design of fixed bolster, simplified loudspeaker's sound production mechanism's structure to loudspeaker's structure has been simplified.

(2) The utility model discloses a sound intracavity is equipped with central line and piezoceramics buzzing piece mid point and coincides and is close to the convex resonance chamber of piezoceramics buzzing piece. The sound waves emitted from the inner side of the sound basin can be reflected in time, the diffusion angle of the audio signals is widened, and the sound waves are well propagated in a wider space. And the center line of the resonance cavity coincides with the center of the buzzer, so that the sounding of the sounding mechanism is more uniform.

(3) The utility model discloses a piezoceramics buzzing piece is fixed in the seal groove through sealed glue, assembles simple swift very, labour saving and time saving.

(4) The utility model discloses a sound production mechanism is equipped with a plurality of annular strengthening ribs in the sound intracavity, has further increased the angle of sound wave diffusion for the sound that sends is more three-dimensional.

(5) The utility model discloses a loudspeaker has adopted the sound basin integrative with resonance chamber, sound chamber integration and set up in the sound production mechanism that the piezoceramics buzzing piece at sound basin back center is constituteed for loudspeaker are when the assembly, and assembly process is simple, and the volume is lighter, has brought very big facility for the installation.

Drawings

Fig. 1 is an exploded view of a sound generating mechanism of a speaker according to an embodiment of the present invention.

Fig. 2 is another exploded view of the sound generating mechanism of the speaker provided in the embodiment of the present invention

Fig. 3 is a side view of a sound generating mechanism of a speaker according to an embodiment of the present invention.

Fig. 4 is a sectional view taken along the direction C-C of fig. 3.

Fig. 5 is an enlarged view of the area a of fig. 4.

Fig. 6 is an exploded view of a horn according to an embodiment of the present invention.

Fig. 7 is an exploded view of a horn according to an embodiment of the present invention.

In the drawings, the names of the parts corresponding to the reference numerals are as follows:

the sound box comprises a sound basin 1, an annular reinforcing rib 11, a piezoelectric ceramic buzzer 2, a sound cavity 3, a resonance cavity 31, a sealing groove 4, a shell 5, a limiting block 51, a connecting terminal 52 and an electric element 53.

Detailed Description

The present invention will be further described with reference to the following drawings and examples, and embodiments of the present invention include, but are not limited to, the following examples.

Referring to fig. 1 to 2, a sounding mechanism of a speaker includes a piezoelectric ceramic buzzer 2 and a cone 1, wherein two ends of the cone 1 have openings, and the piezoelectric ceramic buzzer 2 is disposed at the top end of the cone 1 for driving the cone 1 to vibrate and forms a sound cavity 3 together with the cone 1 for realizing the sounding of the speaker. The traditional cone loudspeaker causes the attractive force of the magnet to change through the change of current, so that the cone vibrates, and the vibration of the cone forces air to vibrate to produce sound. The loudspeaker sound production mechanism of present case, piezoceramics buzzing piece 2 reaches the condition of loudspeaker sound production with the cooperation of sound chamber 3. Magnet and magnet support frame are replaced with piezoceramics buzzer 2, drive sound basin 1 vibrations back with the vibrations of piezoceramics buzzer 2 self and drive the air vibrations sound production.

During the assembly, only need scribble sealed glue on seal groove 4, then press piezoceramics buzzing piece 2 in seal groove 4, the week side of piezoceramics buzzing piece 2 is fixed on seal groove 4 through sealed glue promptly, assembly process is simple to the step that sets up magnet and magnet support frame has been removed from, greatly reduced manufacturing cost and assembly cost of labor.

In another embodiment, the sound cavity 3 is provided with a circular arc-shaped resonance cavity 31, the center line of which coincides with the midpoint of the piezoelectric ceramic buzzer 2 and is close to the piezoelectric ceramic buzzer 2, so that the sound wave emitted from the inner side of the cone 1 can be reflected in time, the reflection surface of the sound wave emitted from the cone 1 is wider, the sound is more three-dimensional, and the sound wave can be well spread in a wider space. The center line of the resonance cavity coincides with the center of the buzzer, so that the sounding of the sounding mechanism is more uniform, and when the sounding mechanism is assembled into a loudspeaker, the sounding generated under the same condition is the largest. Wherein the resonance chamber 31 is integrally formed with the cone 1.

Adopt piezoceramics buzzing piece 2 to replace the structure of the magnet and the magnet support frame of cone formula loudspeaker in the past, alleviateed the weight of the sound generating mechanism of loudspeaker greatly, also make in the loudspeaker assembly of later stage, it is more convenient.

Be provided with on the sound basin 1 towards the convex annular strengthening rib 11 of sound basin 1 central line, further increased the angle of sound wave diffusion for the sound that this structure sent is more three-dimensional, and the cross section of annular strengthening rib 11 is the arc, improves the plane of reflection to the sound wave.

The utility model provides a loudspeaker, includes foretell loudspeaker's sound generating mechanism, still includes the shell 5 of the sound generating mechanism of holding loudspeaker, places sound generating mechanism's stopper 51, binding post 52 and electric element 53, and the common equipment forms the good loudspeaker of sound production, and sound generating mechanism is connected with binding post 52 and electric element 53 electricity, and the electric element at here can be circuit board or transformer, and sound generating mechanism's voltage pottery buzzer 2 is connected with circuit board or transformer electricity.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and is not a limitation to the protection scope of the present invention, but all the changes made by adopting the design principle of the present invention and performing non-creative work on this basis should belong to the protection scope of the present invention.

Claims

1. A sounding mechanism of a loudspeaker is characterized by comprising a piezoelectric ceramic buzzer and a cone in a shape of a circular truncated cone; the both ends of sound basin have the opening, and piezoceramics buzzing piece sets up and is used for driving the vibration of sound basin on the top of sound basin to constitute a sound chamber that is used for realizing loudspeaker sound production jointly with the sound basin.

2. The sounding mechanism of a loudspeaker according to claim 1, wherein the sound cavity is provided with a circular arc-shaped resonance cavity, the center line of which is coincident with the midpoint of the piezoelectric ceramic buzzer and is close to the piezoelectric ceramic buzzer.

3. The sounding mechanism of the loudspeaker according to any one of claims 1 or 2, wherein the top end of the cone is provided with a sealing groove for assembling a piezoelectric ceramic buzzer.

4. The sounding mechanism of a speaker according to claim 3, wherein the piezoelectric ceramic buzzer is fixed in the sealing groove by a sealant.

5. The sound generating mechanism of a loudspeaker of claim 4, wherein a plurality of annular ribs are provided in the sound chamber.

6. A speaker comprising a housing and an electrical component enclosed in the housing, characterized by further comprising a sound generating mechanism according to any one of claims 1 to 5; the sounding mechanism is packaged in the shell, and the piezoelectric ceramic buzzer piece is electrically connected with the electric element.