CN213586266U

CN213586266U - Miniature loudspeaker

Info

Publication number: CN213586266U
Application number: CN202023137134.8U
Authority: CN
Inventors: 刘学南
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-06-29
Anticipated expiration: 2030-12-23

Abstract

The utility model relates to a micro-speaker, which comprises an upper shell and a lower shell, wherein the upper shell and the lower shell are made of plastic materials, a sounding body is arranged between the upper shell and the lower shell, the upper shell and the lower shell are fixed by ultrasonic welding, the inner side of the upper shell is provided with an upper pressing surface, the inner side of the lower shell is provided with a lower pressing surface, the upper end edge of the sounding body is respectively and tightly connected with the upper pressing surface and the lower pressing surface, the upper shell and the lower shell are fixed by ultrasonic welding, the integral connection strength of the product is improved, glue pasting is not needed, and simultaneously, the sounding body is fixed by the mutual matching of the upper pressing surface and the lower pressing surface, and the additional assembly process of other modes on the sounding body is not needed, so the production efficiency is improved, the production cost is reduced, in addition, the vibrating diaphragm is in a conical shape with a low middle part and a high periphery, so that sound waves can be diffused to the periphery, and the sound is louder and clearer.

Description

Miniature loudspeaker

Technical Field

The utility model relates to a generating device's technical field, concretely relates to miniature loudspeaker.

Background

Miniature loudspeaker are used for alarm device, and volume such as alarm clock and power are all less loudspeaker, and current miniature loudspeaker generally include the casing, casing and sound production body down, go up the casing and generally connect through the adhesive mode of glue down, lead to the holistic joint strength of product low, and manufacturing cost is higher moreover.

Therefore, further improvements are needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the not enough of above-mentioned prior art existence, and provide a miniature loudspeaker, aim at solving one of the above-mentioned technical problem among the prior art to a certain extent at least.

The purpose of the utility model is realized like this:

the utility model provides a miniature loudspeaker, includes casing and lower casing, goes up the casing and is the plastics material with lower casing, goes up the casing and is equipped with the sound production body down between the casing, goes up the casing and passes through ultrasonic bonding with lower casing and fixes, goes up the inboard of casing and is equipped with the face that compresses tightly, and the inboard of casing is equipped with down the face that compresses tightly, and the upper end edge of sound production body compresses tightly face and face zonulae occludens down with last respectively.

The center position of going up the casing is equipped with the boss, forms the recess between boss and the last casing, and the boss is close to one side of recess and is equipped with the phonate hole.

The upper shell is provided with a positioning bulge, and the lower shell is provided with a positioning concave part corresponding to the positioning bulge.

The positioning convex part and the positioning concave part are in a ladder column shape with a narrow lower part and a wide upper part.

And a wire is welded between the upper shell and the lower shell through ultrasonic waves.

The sounding body comprises a vibrating diaphragm and a piezoelectric buzzer piece which are arranged from top to bottom, and the vibrating diaphragm is in a conical shape with a middle low periphery and a high periphery.

The utility model has the advantages that:

go up the casing and pass through ultrasonic bonding fixed with lower casing, improved the holistic joint strength of product, need not to carry out glue and paste, simultaneously, and the sound production body makes it fixed through last face and the face of compressing tightly mutually supports down, need not additionally to carry out the assembly process of other modes to the sound production body, has improved production efficiency and reduction in production cost.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.

Drawings

Fig. 1 is a first cross-sectional view of an embodiment of the present invention.

Fig. 2 is a second cross-sectional view of the embodiment of the present invention.

Fig. 3 is a perspective view of an embodiment of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

Referring to fig. 1-3, this miniature loudspeaker, including last casing 1 and lower casing 2, it is the plastics material to go up casing 1 and lower casing 2, it is equipped with sound production body 3 to go up between casing 1 and the lower casing 2, it is fixed through ultrasonic bonding with lower casing 2 to go up casing 1, the inboard of going up casing 1 is equipped with compressing tightly face 11, the inboard of casing 2 is equipped with down compressing tightly face 21 down, the upper end edge of sound production body 3 respectively with last compressing tightly face 11 with compress tightly face 21 zonulae occludens down, it is fixed through ultrasonic bonding to go up casing 1 and lower casing 2, the holistic joint strength of product has been improved, need not to carry out glue and paste, and simultaneously, sound production body 3 makes it fixed through last compressing tightly face 11 and lower compressing tightly face 21 mutually supporting, need not additionally to carry out the assembly process of other modes to sound production body 3, production efficiency and reduction in production cost have been improved.

Furthermore, a boss 12 is arranged at the center of the upper shell 1, a groove 13 is formed between the boss 12 and the upper shell 1, and a sound outlet 14 is arranged at one side of the boss 12 close to the groove 13, so that sound waves can be better diffused all around, and the propagation efficiency of the sound waves is improved.

Furthermore, the upper shell 1 is provided with the positioning protruding portion 15, and the lower shell 2 is provided with the positioning lower concave portion 22 corresponding to the positioning protruding portion 15, so that the upper shell 1 and the lower shell 2 can be quickly positioned during assembly, and the assembly efficiency is improved.

Further, the positioning protrusion 15 and the positioning lower recess 22 are each in the shape of a ladder column with a narrow bottom and a wide top, so that the positioning protrusion 15 can better enter the positioning lower recess 22.

Further, a lead 4 is ultrasonically welded between the upper case 1 and the lower case 2.

Further, the sounding body 3 includes the vibrating diaphragm 31 and the piezoelectric buzzer 32 that set up from top to bottom, and the vibrating diaphragm 31 is the high toper shape of low periphery in the middle of being, is favorable to the sound wave to spread all around, and the sound is clear louder.

The above embodiments are merely preferred embodiments of the present invention, and other embodiments are also possible. Equivalent modifications or substitutions may be made by those skilled in the art without departing from the spirit of the invention, and such equivalent modifications or substitutions are intended to be included within the scope of the claims set forth herein.

Claims

1. The utility model provides a micro-speaker, includes casing (1) and casing (2) down, go up casing (1) and casing (2) down and be the plastics material, go up casing (1) and be equipped with sound production body (3) down between casing (2), its characterized in that, go up casing (1) and casing (2) down and pass through ultrasonic welding fixed, the inboard of going up casing (1) is equipped with compresses tightly face (11), and the inboard of casing (2) is equipped with down compresses tightly face (21), the upper end edge of sound production body (3) respectively with last compress tightly face (11) and compress tightly face (21) zonulae occludens down.

2. The micro-horn of claim 1, wherein: go up the central point of casing (1) and put and be equipped with boss (12), form recess (13) between boss (12) and last casing (1), boss (12) lean on one side of recess (13) to be equipped with sound outlet (14).

3. The micro-horn of claim 1, wherein: the upper shell (1) is provided with a positioning convex part (15), and the lower shell (2) is provided with a positioning concave part (22) corresponding to the positioning convex part (15).

4. The micro-horn of claim 3, wherein: the positioning convex part (15) and the positioning concave part (22) are in a ladder column shape with a narrow lower part and a wide upper part.

5. The micro-horn of claim 1, wherein: and a lead (4) is welded between the upper shell (1) and the lower shell (2) through ultrasonic waves.

6. The micro-horn of any one of claims 1 to 5, wherein: the sounding body (3) comprises a vibrating diaphragm (31) and a piezoelectric buzzer piece (32) which are arranged from top to bottom, and the vibrating diaphragm (31) is in a conical shape with a middle low periphery and a high periphery.