CN212785843U

CN212785843U - Sound production device module

Info

Publication number: CN212785843U
Application number: CN202021920648.8U
Authority: CN
Inventors: 张梦凡; 王淑娟
Original assignee: Inner Mongolia Enwo Electronic Technology Co ltd
Current assignee: Chifeng zhuo'ou Electronic Technology Co.,Ltd.
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2021-03-23
Anticipated expiration: 2030-09-04

Abstract

A sound generator module comprising: the first shell is provided with an inner cavity and a first sound outlet, and a moving iron unit is arranged in the inner cavity corresponding to the first sound outlet; the second shell is detachably connected with the first shell, and a second sound outlet hole is formed in the second shell; and the filtering cavity is arranged in the second shell and is communicated with the second sound outlet hole and the first sound outlet hole. In this application embodiment, set up to releasable connection through with first casing and second casing, set up the filtration chamber in the second casing simultaneously, only need change the second casing that has different filtration chambers, just can realize changing the effect of the acoustic performance of generating device module, and simple structure low cost.

Description

Sound production device module

Technical Field

The application belongs to the sound generating device field, concretely relates to sound generating device module.

Background

With the progress of scientific technology and the improvement of entertainment requirements of people on electronic products, consumer products with loudspeakers, such as mobile phones, notebook computers, earphones and the like, are widely popularized, and sound generating device modules are more and more widely applied, for example, sound generating modules cannot be started when structural sounds, such as telephone receivers, earphones, loudspeakers or sound equipment, are sent out, and the sound generating mode of the sound generating device modules is mainly divided into two sound generating structures, namely a moving-iron type sound generating structure and a moving-coil type sound generating structure; the moving iron unit is conducted to the central point of a miniature diaphragm through a connecting rod with a precise structure, so that vibration and sound are generated.

The moving-iron type unit in the prior art has single acoustic characteristic in application, cannot meet the requirement of customers on product acoustic performance diversification, needs different product customized designs if the acoustic performance needs to be changed, and increases the research and development period and the cost of products.

SUMMERY OF THE UTILITY MODEL

The purpose of the embodiment of the application is to provide a sound generating device module, which can solve the problem that the volume of structures such as a receiver or an earphone is too large in the prior art.

In order to solve the technical problem, the present application is implemented as follows:

the embodiment of the application provides a sound generating mechanism module, include:

the first shell is provided with an inner cavity and a first sound outlet, and a moving iron unit is arranged in the inner cavity corresponding to the first sound outlet;

the second shell is detachably connected with the first shell, and a second sound outlet hole is formed in the second shell;

and the filtering cavity is arranged in the second shell and is communicated with the second sound outlet hole and the first sound outlet hole.

Optionally, a connecting hole is formed in one side, opposite to the second sound outlet, of the second shell, the hole wall of the connecting hole extends in the direction away from the second sound outlet to form a connecting portion, and the connecting portion is detachably connected with the first sound outlet.

Optionally, a first thread is arranged on the outer peripheral side of the connecting portion, a second thread is arranged on the hole wall of the first sound outlet, the first thread is matched with the second thread, and the first shell is screwed with the second shell through matching of the connecting portion and the first sound outlet.

Optionally, the first shell and the second shell are cylindrical shells, and the first sound outlet hole and the second sound outlet hole are circular.

Optionally, the moving iron unit includes a vibration system, a diaphragm and a driving rod, the vibration system and the diaphragm are connected and driven by the driving rod, and the diaphragm is disposed in the inner cavity and covers the first sound outlet.

Optionally, the vibration system includes an armature, the armature includes a fixing plate, a connecting plate and a driving plate, the connecting plate connects the fixing plate and the driving plate to form a U-shaped structural member, a through hole is opened at the top of the fixing plate, one end of the driving rod is connected to the vibrating diaphragm, and the other end of the driving rod passes through the through hole and is connected to the driving plate.

Optionally, the vibration system further includes a coil, a magnet, and a yoke, the coil and the yoke have annular cross sections, the coil and the yoke are disposed at the bottom of the cavity of the inner cavity and surround the driving plate, the fixing plate is fixed to one side of the yoke, which is close to the first sound outlet, the driving rod is disposed between the coil and the yoke, the magnet includes a first magnet and a second magnet, and the first magnet and the second magnet are disposed in the inner ring of the yoke and located at two sides of the driving plate.

Optionally, the first magnet and the second magnet are both disposed parallel to the drive plate.

Optionally, the diaphragm is circular.

Optionally, an installation part is arranged on the periphery of the top of the inner cavity, and the edge of the diaphragm is fixed on the installation part.

Drawings

Fig. 1 is a cross-sectional view of a sound generating device module according to an embodiment of the present application.

Description of the reference numerals

1. A first housing; 11. an inner cavity; 12. a first sound outlet; 2. a second housing; 21. a filter cavity; 22. a second sound outlet; 23. a connecting portion; 3. a moving iron unit; 31. an armature; 311. a fixing plate; 312. a connecting plate; 313. a drive plate; 32. a coil; 33. a magnet; 34. a magnetic yoke; 35. vibrating diaphragm; 36. a drive rod.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

The following describes a sound generating device module provided in the embodiments of the present application in detail through specific embodiments and application scenarios thereof with reference to the accompanying drawings.

The embodiment of the application provides a sound generating mechanism module, as shown in fig. 1, include:

the sound insulation device comprises a first shell 1, a second shell and a sound insulation device, wherein the first shell is provided with an inner cavity 11 and a first sound outlet hole 12, and a moving iron unit 3 is arranged in the inner cavity 11 corresponding to the first sound outlet hole 12; the moving iron unit 3 emits sound, and the sound is transmitted out through the first sound outlet hole 12, so that the simple sound production function of the generating device module can be realized.

The second shell 2 is detachably connected with the first shell 1, and a second sound outlet hole 22 is formed in the second shell 2;

a filter cavity 21, the filter cavity 21 is disposed in the second casing 2, and the filter cavity 21 communicates the second sound outlet 22 with the first sound outlet 12.

The acoustic performance of the sound emitted by the moving-iron unit 3 can be optimized and adjusted by the filter cavity 21, and the sound is emitted from the first sound outlet hole 12 into the filter cavity 21, optimized and adjusted, and then emitted through the second sound outlet hole 22. Especially for the optimization function of low-frequency sound, the filtering wave cavity 21 can eliminate high-frequency sound, so that the bass transmitted from the second sound outlet hole 22 is thicker, and the acoustic performance is improved. Simultaneously the user can select different tone colors and tone quality according to the demand of difference, only needs to go out the second casing 2 that the sound cavity structure is different and be connected with first an organic whole, can change the difference that the generating device module goes out the sound, and is very convenient.

The length and the volume of the concrete wall body of the filtering cavity 21 can be designed according to the sound that the generation device module reaches as required, so that the sound transmitted from the second sound outlet hole 22 is more diversified.

Optionally, as shown in fig. 1, a connection hole is formed in a side of the second casing 2 opposite to the second sound outlet 22, a hole wall of the connection hole extends in a direction away from the second sound outlet 22 to form a connection portion 23, and the connection portion 23 is detachably connected to the first sound outlet 12. The connecting portion 23 can be inserted into the first sound outlet hole 12, so that the second housing 2 and the first housing 1 can be connected, and the specific connection manner is not limited, and the second housing 2 and the first housing 1 can be connected.

Alternatively, as shown in fig. 1, a first thread is provided on the outer peripheral side of the connecting portion 23, a second thread is provided on the hole wall of the first sound outlet hole 12, the first thread and the second thread are adapted, and the first housing 1 is screwed with the second housing 2 through the matching of the connecting portion 23 and the first sound outlet hole 12. This embodiment specifically exemplifies one of the connection modes of the first casing 1 and the second casing 2, and the matching of the first screw thread and the second screw thread can enhance the air tightness between the first casing 1 and the second casing 2, so as to ensure that the sound emitted from the first sound outlet 12 can be transmitted into the filter cavity 21 in the first casing 1 as concentrated as possible, and ensure the fidelity when the sound source enters the filter cavity 21, so that the acoustic performance of the sound emitted from the second sound outlet 22 can be better. Meanwhile, the bolt connection mode is simpler and more convenient to operate and is not easy to damage, the connection stability of the first shell 1 and the second shell 2 is guaranteed, the cost is reduced, and the service life of the first shell 1 and the service life of the second shell 2 are prolonged.

Alternatively, as shown in fig. 1, the first housing 1 and the second housing 2 are cylindrical housings, and the first sound outlet hole 12 and the second sound outlet hole 22 are circular. The cylindrical first shell 1 and the wire shell are matched with the circular first sound outlet hole 12 and the circular second sound outlet hole 22, so that the energy conversion efficiency of the moving iron unit 3 can be optimized, and the acoustic performance is further improved. While the cylindrical appearance can match the needs of different users.

Optionally, as shown in fig. 1, the moving iron unit 3 includes a vibration system, a diaphragm 35, and a driving rod 36, the vibration system and the diaphragm 35 are connected and driven by the driving rod 36, and the diaphragm 35 is disposed in the inner cavity 11 and covers the first sound outlet 12. Connect vibration system and vibrating diaphragm 35 through actuating lever 36, the produced vibration of vibration system passes through actuating lever 36 and transmits to vibrating diaphragm 35 to drive vibrating diaphragm 35 vibration sound.

Optionally, as shown in fig. 1, the vibration system includes an armature 31, where the armature 31 includes a fixing plate 311, a connecting plate 312 and a driving plate 313, the fixing plate 311 and the driving plate 313 are connected by the connecting plate 312 to form a U-shaped structural member, a through hole is opened at the top of the fixing plate 311, one end of the driving rod 36 is connected to the diaphragm 35, and the other end passes through the through hole and is connected to the driving plate 313. Taking the first sound outlet 12 opened at the top of the first casing 1 as an example, the driving rod 36 is vertically disposed in the inner cavity 11, and the center of the driving rod 36 is opposite to the center of the first sound outlet 12. The section of the driving rod 36 connected with the driving plate 313 through the through hole on the top surface of the fixing plate 311 vibrates more stably and saves space.

Wherein the fixed plate 311 keeps the stationary driving plate 313 vibrating, thereby vibrating the diaphragm 35 by the driving rod 36. The vibrating diaphragm 35 connected to the driving rod 36 covers the first sound outlet 12, so that when the driving rod 36 vibrates, one end connected to the vibrating diaphragm 35 is a vibration source of the vibrating diaphragm 35, which is equivalent to the maximum vibration amplitude of the vibrating diaphragm 35 at the position corresponding to the center of the first sound outlet 12. So that the loss of the diaphragm 35 during vibration is reduced and the volume and acoustic performance of the generating device module are improved.

Specifically, in order to further improve the mechanical performance of the generator module, it is preferable that the armature material is 50% iron and 50% nickel permalloy. The material of the first and second housings 1, 2 is stainless steel or 80% iron and 20% nickel permalloy. The material of magnet 33 is alnico.

Optionally, as shown in fig. 1, the vibration system further includes a coil 32, a magnet 33, and a yoke 34, the coil 32 and the yoke 34 are annular in cross section, the coil 32 and the yoke 34 are disposed at the bottom of the inner cavity 11 and surround the driving plate 313, the fixing plate 311 is fixed to one side of the yoke 34 close to the first sound outlet 12, the driving rod 36 is disposed between the coil 32 and the yoke 34, the magnet 33 includes a first magnet 33 and a second magnet 33, and the first magnet 33 and the second magnet 33 are disposed opposite to the inner ring of the yoke 34 and located at two sides of the driving plate 313. The coil 32 and the magnetic yoke 34 are both in an annular structure and are arranged horizontally and coaxially, one end of the armature 31 is fixed on the top surface of the magnetic yoke 34, and the other end of the armature penetrates through the magnet 33 and then vibrates synchronously with the diaphragm 35 through the driving rod 36. The vibration end of the armature 31 is connected with the diaphragm 35 through the driving rod 36, and when the vibration end of the armature 31 vibrates, the diaphragm 35 is driven to vibrate, so that sound is produced.

Alternatively, as shown in fig. 1, the first magnet 33 and the second magnet 33 are both disposed in parallel with the driving plate 313. The first magnet 33 and the second magnet 33 arranged in parallel on the driving plate 313 can generate a more stable uniform magnetic field, thereby ensuring the stability and accuracy of the sound level of the sound emitted through the first sound outlet 12.

Alternatively, as shown in fig. 1, the diaphragm 35 is circular. The effective usable area of circular shape vibrating diaphragm 35 is greater than the effective usable area of the square vibrating diaphragm 35 of tradition, when having saved the volume, can also promote energy conversion efficiency.

Alternatively, as shown in fig. 1, an installation portion is provided on the top periphery side of the inner cavity 11, and the edge of the diaphragm 35 is fixed to the installation portion. The vibration area of the diaphragm 35 can be increased by the installation portion on the edge, and the energy conversion efficiency is improved.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A sound generating device module, comprising:

the sound insulation device comprises a first shell (1), wherein the shell is provided with an inner cavity (11) and a first sound outlet hole (12), and a moving iron unit (3) is arranged in the inner cavity (11) at a position corresponding to the first sound outlet hole (12);

the second shell (2), the second shell (2) is detachably connected with the first shell (1), and a second sound outlet hole (22) is formed in the second shell (2);

a filtering cavity (21), wherein the filtering cavity (21) is arranged in the second shell (2), and the filtering cavity (21) is communicated with the second sound outlet hole (22) and the first sound outlet hole (12).

2. The sound generating device module as claimed in claim 1, wherein a connecting hole is formed in a side of the second housing (2) opposite to the second sound outlet (22), a wall of the connecting hole extends in a direction away from the second sound outlet (22) to form a connecting portion (23), and the connecting portion (23) is detachably connected to the first sound outlet (12).

3. The sound generating device module as claimed in claim 2, wherein a first thread is provided on the outer peripheral side of the connecting portion (23), a second thread is provided on the wall of the first sound outlet hole (12), the first thread and the second thread are adapted, and the first housing (1) is screwed with the second housing (2) through the cooperation of the connecting portion (23) and the first sound outlet hole (12).

4. The sound generator module as claimed in claim 1, characterised in that the first housing (1) and the second housing (2) are cylindrical housings and the first sound outlet aperture (12) and the second sound outlet aperture (22) are circular.

5. The sound generating device module as claimed in claim 1, wherein the moving-iron unit (3) comprises a vibration system, a diaphragm (35) and a driving rod (36), the vibration system and the diaphragm (35) are connected and driven by the driving rod (36), and the diaphragm (35) is disposed in the inner cavity (11) and covers the first sound outlet (12).

6. The sound generating device module as claimed in claim 5, wherein the vibration system comprises an armature (31), the armature (31) comprises a fixing plate (311), a connecting plate (312) and a driving plate (313), the connecting plate (312) connects the fixing plate (311) and the driving plate (313) to form a U-shaped structural member, a through hole is opened at the top of the fixing plate (311), one end of the driving rod (36) is connected to the diaphragm (35), and the other end of the driving rod passes through the through hole to be connected to the driving plate (313).

7. The sound generating device module as claimed in claim 6, wherein the vibration system further comprises a coil (32), a magnet (33) and a yoke (34), the coil (32) and the yoke (34) are annular in cross section, the coil (32) and the yoke (34) are disposed at the bottom of the inner cavity (11) and surround the driving plate (313), the fixing plate (311) is fixed on the yoke (34) at a side close to the first sound outlet (12), the driving rod (36) is disposed between the coil (32) and the yoke (34), the magnet (33) comprises a first magnet (33) and a second magnet (33), and the first magnet (33) and the second magnet (33) are disposed opposite to the inner ring of the yoke (34) and located at two sides of the driving plate (313).

8. The sound generator module of claim 7 wherein said first magnet (33) and said second magnet (33) are both disposed parallel to said drive plate (313).

9. A sound-generating device module as claimed in claim 5, characterized in that the diaphragm (35) is circular.

10. The sound generating device module as claimed in claim 5, wherein a mounting portion is provided on the top periphery of the inner cavity (11), and the edge of the diaphragm (35) is fixed to the mounting portion.