Sound production unit

Abstract

The utility model discloses a sounding unit, which comprises a fixing assembly, a diaphragm assembly, a high-pitch voice coil, an elastic connecting piece, a low-pitch voice coil and a centering disk, and is characterized in that the fixing assembly comprises a basin stand; the vibrating diaphragm assembly is arranged on the frame; the high-pitch voice coil is connected with the diaphragm assembly. The elastic connecting piece is arranged at the bottom of the high-pitch voice coil; the bass voice coil is located below the treble voice coil, and the top of the bass voice coil is connected with the elastic connecting piece; the centering disk is connected with the fixing assembly and the bass voice coil. The sounding unit is simple and novel in structure, is compatible with the high pitch unit and the low pitch unit, and can realize good sounding of high pitch and low pitch. Compared with an existing treble and bass sounding unit, the high-pitch voice coil and the bass voice coil of the sounding unit share one vibrating diaphragm assembly, so that the number of parts of the sounding unit is reduced, and the cost of vibrating diaphragm consumables and the cost of an assembly process are effectively saved; moreover, the high pitch does not need to additionally occupy the space of the sounding unit, so that the sounding unit can be smaller, and is particularly suitable for electronic equipment with limited internal space.

Description

Technical Field

[0001] The utility model relates to the technical field of electroacoustic transducers, and particularly to a sounding unit. Background Art

[0002] As mobile terminals such as mobile phones and tablet computers enrich people's lives, the sounding unit plays an indispensable role as an audio device.

[0003] Since consumers have higher and higher requirements for the sound quality and loudness of the whole machine, in order to achieve a better experience, the industry often puts multiple sounding units in a speaker, including a bass sounding unit, a midrange sounding unit and a treble sounding unit, and then filters out the redundant frequency bands through a filter, only retaining the desired effective bandwidth. Although the sound quality has improved, the volume of the speaker has also increased, the speaker has become bulky, and the cost has also risen. Therefore, there is an urgent need in the market for a small-volume sounding unit that is compatible with both bass and treble. Summary of the Utility Model

[0004] The technical problem solved by the utility model is to provide a small-volume sounding unit that is compatible with both bass and treble.

[0005] To solve the above technical problem, the technical solution adopted by the utility model is: a sounding unit, comprising:

[0006] A fixing component, the fixing component includes a chassis;

[0007] A diaphragm assembly, the diaphragm assembly is arranged on the chassis;

[0008] A treble voice coil, the treble voice coil is connected to the diaphragm assembly;

[0009] An elastic connecting piece, the elastic connecting piece is arranged at the bottom of the treble voice coil;

[0010] A bass voice coil, the bass voice coil is located below the treble voice coil, and the top of the bass voice coil is connected to the elastic connecting piece;

[0011] A centering washer, the centering washer connects the fixing component and the bass voice coil.

[0012] In one embodiment, the treble voice coil and the bass voice coil are connected in parallel.

[0013] In one embodiment, a connection pad is arranged on the chassis, the lead of the treble voice coil is welded and conducted with the connection pad, a conduction line and a conduction pad connected and conducted with the conduction line are arranged on the centering washer, there are two conduction lines, one conduction line is welded and conducted with the connection pad, and the other conduction line is welded and conducted with the lead of the bass voice coil, and the conduction pad is exposed outside the sounding unit.

[0014] In one embodiment, the compression stroke of the elastic connecting member is less than or equal to 1 mm.

[0015] In one embodiment, the compression stroke of the elastic connecting member is less than or equal to 0.5 mm.

[0016] In one embodiment, the compression stroke of the elastic connecting member is less than or equal to 0.3 mm.

[0017] In one embodiment, the elastic connecting member is integrally in a ring frame shape. The top of the elastic connecting member is connected to the bottom surface of the tweeter voice coil, and the bottom of the elastic connecting member is connected to the top surface of the woofer voice coil.

[0018] In one embodiment, the cross-section of the elastic connecting member is wavy.

[0019] In one embodiment, the material of the elastic connecting member is plastic or rubber.

[0020] In one embodiment, the number of the elastic connecting members is multiple.

[0021] The beneficial effects of the present utility model are as follows:

[0022] The sound generating unit of the present utility model has a simple and novel structure, combines a tweeter unit and a woofer unit, and can achieve good sound generation of high and low frequencies.

[0023] Compared with the existing high and low frequency sound generating units, the sound generating unit of the present utility model shares a diaphragm assembly for the tweeter voice coil and the woofer voice coil, reduces the number of components of the sound generating unit, and effectively saves the cost of diaphragm consumables and the assembly process cost. Moreover, the tweeter does not need to occupy additional space of the sound generating unit, so that the sound generating unit can be more compact, making it particularly suitable for electronic devices with limited internal space. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for describing the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0025] Figure 1 It is a cross-sectional view of the sound generating unit according to Embodiment 1 of the present utility model;

[0026] Figure 2 It is a schematic structural diagram of the internal structure of the sound generating unit according to Embodiment 1 of the present utility model;

[0027] Figure 3Schematic diagram of a partial structure of the sound generating unit according to the first embodiment of the present utility model;

[0028] Figure 4 Schematic diagram of the elastic connecting member in the sound generating unit according to the first embodiment of the present utility model.

[0029] Explanation of the reference numerals in the drawings:

[0030] 1. Basin frame;

[0031] 2. Magnetic circuit assembly; 21. Yoke; 22. Flange; 23. Central magnet; 24. Central washer;

[0032] 3. Diaphragm assembly; 31. Sound film; 32. Dome;

[0033] 4. High - frequency voice coil;

[0034] 5. Elastic connecting member;

[0035] 6. Low - frequency voice coil;

[0036] 7. Centering spider;

[0037] 8. Connection pad. Detailed implementation manners

[0038] The realization of the purpose, functional features and advantages of the present utility model will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

[0039] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0040] It should be noted that if there are directional indications such as up, down, left, right, front, back... in the embodiments of the present utility model, then such directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture as shown in the drawings. If this specific posture changes, then the directional indications will also change accordingly.

[0041] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, then such descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature.

[0042] In addition, the meaning of "and / or" as used throughout the text includes three parallel solutions. Taking "and / or" as an example, it includes the solution of "A", or the solution of "B", or the solution of "A and B" being satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0043] In this application, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] Embodiment 1

[0045] Please refer to Figures 1 to 4 , Embodiment 1 of the present utility model is as follows: a sound generating unit, including a fixing component, a diaphragm assembly 3, a high-frequency voice coil 4, an elastic connecting member 5, a low-frequency voice coil 6 and a centering support 7. The fixing component includes a chassis 1 and a magnetic circuit assembly 2 connected to the chassis 1. The magnetic circuit assembly 2 has a magnetic gap. The diaphragm assembly 3 is arranged on the chassis 1. In this embodiment, the diaphragm assembly 3 includes a sound film 31 and a dome 32. The sound film 31 includes an inner fixing portion, a surround portion and an outer fixing portion connected in sequence from inside to outside. A window is provided in the central area of the inner fixing portion. The dome 32 is connected to the inner fixing portion and closes the window. In other embodiments, it is also possible that the diaphragm assembly 3 does not have the dome 32, or it is also acceptable that the sound film 31 does not have the window; the high-frequency voice coil 4 is connected to the diaphragm assembly 3. Specifically, the top of the high-frequency voice coil 4 is connected to the diaphragm assembly 3; the elastic connecting member 5 is arranged at the bottom of the high-frequency voice coil 4 to form a fixed connection with the high-frequency voice coil 4; the low-frequency voice coil 6 is located below the high-frequency voice coil 4, and the top of the low-frequency voice coil 6 is connected to the elastic connecting member 5. The elastic connecting member 5 is made of a non-magnetic elastic material; the centering support 7 connects the fixing component and the low-frequency voice coil 6.

[0046] The magnetic circuit assembly 2 includes a yoke 21 and a central magnetic structure. The edge of the yoke 21 has a flanging 22 formed by bending. The yoke 21 is connected to the chassis 1 through the flanging 22. The central magnetic structure is arranged on the yoke 21 and located between at least two sets of oppositely arranged flangings 22. The gap between the central magnetic structure and the flanging 22 is the magnetic gap. The high-frequency voice coil 4, the elastic connecting member 5, and the low-frequency voice coil 6 are arranged corresponding to the magnetic gap. The central magnetic structure includes a central magnet 23 and a central washer 24. The central magnet 23 connects the yoke 21 and the central washer 24. In other embodiments, the magnetic circuit assembly 2 further includes an edge magnetic structure, and the edge magnetic structure replaces at least part of the flanging 22.

[0047] The high-frequency voice coil 4 is in parallel with the low-frequency voice coil 6. In this embodiment, connection pads 8 are provided on the chassis 1. The lead of the high-frequency voice coil 4 is welded and conducted with the connection pad 8. Conductive lines and conductive pads connected and conducted with the conductive lines are provided on the centering washer 7. There are two conductive lines. One conductive line is welded and conducted with the connection pad 8, and the other conductive line is welded and conducted with the lead of the low-frequency voice coil 6. The conductive pads are exposed outside the sound generating unit.

[0048] In this embodiment, both ends of the low-frequency voice coil 6 are respectively connected with the centering washer 7, and each centering washer 7 is respectively connected with a connection pad 8. The centering washer 7 can be a flexible printed circuit board.

[0049] Optionally, the connection pad 8 is snap-fitted on the chassis 1. For the convenience of processing, it is preferred that the connection pad 8 and the chassis 1 are an integrally formed structure by insert injection molding.

[0050] The compression stroke of the elastic connecting member 5 is less than or equal to 1 mm. Preferably, the compression stroke of the elastic connecting member 5 is less than or equal to 0.5 mm. Further preferably, the compression stroke of the elastic connecting member 5 is less than or equal to 0.3 mm. In this embodiment, the compression of the elastic connecting member 5 is 0.2 mm. The small compression stroke of the elastic connecting member 5 between the high-frequency voice coil 4 and the low-frequency voice coil 6 limits the amplitude when the sound generating unit emits high-frequency sounds. Only the high-frequency part takes effect when the sound generating unit emits high-frequency sounds, so that the sound pressure can be made higher.

[0051] In this embodiment, the elastic connecting member 5 is integrally in a ring frame shape. The top of the elastic connecting member 5 is connected to the bottom surface of the high-frequency voice coil 4, and the bottom of the elastic connecting member 5 is connected to the top surface of the low-frequency voice coil 6. The cross-section of the elastic connecting member 5 is in a wavy shape; the material of the elastic connecting member 5 is plastic or rubber, such as silica gel, etc. In other embodiments, the number of the elastic connecting members 5 can also be multiple.

[0052] The working principle of this sound generating unit is briefly described as follows:

[0053] This sound generating unit is designed with flexible high - and low - pitch switching. The high - pitch voice coil and the low - pitch voice coil are connected in parallel. When an external input current is applied, the high - pitch voice coil and the low - pitch voice coil will work synchronously. Since the compression stroke of the elastic connecting piece is 0.2 mm, when the amplitude of the sound generating unit exceeds 0.2 mm, both the high - pitch voice coil and the low - pitch voice coil apply driving forces to the diaphragm assembly to drive the diaphragm assembly to generate a greater loudness, thereby improving the low - frequency performance of the sound generating unit; when the amplitude of the sound generating unit is less than 0.2 mm, the amplitude is less than the compression stroke of the elastic connecting piece, so the low - pitch voice coil no longer works in cooperation with the high - pitch voice coil. Only the high - pitch voice coil drives the diaphragm assembly, and the low - pitch voice coil is supported by the centering support piece. Therefore, the total weight of the effective vibration system will be reduced (the low - pitch voice coil does not work), so that the high - frequency performance of the sound generating unit reaches a better effect.

[0054] The above are only optional embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made under the inventive concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.

Claims

1. Sound generating unit, characterized in that: including a fixing component, the fixing component including a speaker frame; a diaphragm component, the diaphragm component being disposed on the speaker frame; a tweeter voice coil, the tweeter voice coil being connected to the diaphragm component; an elastic connecting member, the elastic connecting member being disposed at the bottom of the tweeter voice coil; a woofer voice coil, the woofer voice coil being located below the tweeter voice coil, and the top of the woofer voice coil being connected to the elastic connecting member; a centering spider, the centering spider connecting the fixing component and the woofer voice coil.

2. The sound generating unit according to claim 1, characterized in that: The tweeter voice coil and the woofer voice coil are connected in parallel.

3. The sound generating unit according to claim 2, wherein: A connection pad is provided on the speaker frame, and the lead of the tweeter voice coil is welded and conducted with the connection pad. A conduction line and a conduction pad connected and conducted with the conduction line are provided on the centering spider. There are two conduction lines. One conduction line is welded and conducted with the connection pad, and the other conduction line is welded and conducted with the lead of the woofer voice coil. The conduction pad is exposed outside the sound generating unit.

4. The sound generating unit according to claim 1, wherein: The compression stroke of the elastic connecting member is less than or equal to 1 mm.

5. The sound generating unit according to claim 4, wherein: The compression stroke of the elastic connecting member is less than or equal to 0.5 mm.

6. The sound generating unit according to claim 5, characterized in that: The compression stroke of the elastic connecting member is less than or equal to 0.3 mm.

7. The sound generating unit according to claim 1, wherein: The elastic connecting member is integrally in a ring frame shape. The top of the elastic connecting member is connected to the bottom surface of the tweeter voice coil, and the bottom of the elastic connecting member is connected to the top surface of the woofer voice coil.

8. The sound generating unit according to claim 1, wherein: The cross section of the elastic connecting member is wavy.

9. The sound generating unit according to claim 1, wherein: The material of the elastic connecting member is plastic or rubber.

10. The sound generating unit according to claim 1, wherein: The number of the elastic connecting members is multiple.

Images