sound production unit

Abstract

The utility model discloses a sound unit, including basin frame, diaphragm subassembly, conductive layer, voice coil, be equipped with electric terminal on basin frame, and the exposed surface of electric terminal has connection area and exposed area, diaphragm subassembly includes the inside fixed part, the ring part of folding and the outside fixed part that are connected in proper order from inside to outside, and the outside fixed part is connected with the extension part fixed on the basin frame, and the conductive layer is located diaphragm subassembly, and the conductive layer includes the inside lead -through part, the communicating part and the outside lead -through part that are connected in proper order, and the inside lead -through part is located the inside fixed part, and the outside lead -through part is located the extension part and is electrically connected with connection area, and the voice coil is fixed and located the inside fixed part and is electrically connected with the inside lead -through part. The utility model discloses a sound unit through directly setting the conductive layer on diaphragm subassembly, and the connection area of voice coil and electric terminal on basin frame is lead -through, and the exposed area of electric terminal and external power supply are lead -through, and the lead -through or the centering branch of traditional structure in the internal space is saved, and the internal space is released, and the magnetic circuit assembly design allowance is improved, and the performance of sound unit is improved further.

Description

Technical Field

[0001] This utility model relates to the field of electroacoustic converter technology, and in particular to a sound generating unit. Background Technology

[0002] As electronic devices such as mobile phones and tablets become smaller and thinner, the installation space left for sound units is getting smaller and smaller, but the performance requirements for sound units are getting higher and higher. Therefore, how to improve the performance of sound units under the constraints of product structure and size has become the goal pursued by practitioners.

[0003] In existing sound-generating units, the voice coil is often connected to an external power source through structures such as leads or centering supports. However, these structures occupy internal space within the sound-generating unit, making it difficult to improve its performance. Utility Model Content

[0004] The technical problem solved by this utility model is to provide a high-performance sound generating unit in which the conduction structure of the voice coil does not encroach on the internal space of the sound generating unit.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a sound-generating unit, comprising:

[0006] A basin stand, wherein the basin stand is provided with electrical terminals, and the exposed surface of the electrical terminals has a connection area and an exposed area;

[0007] The diaphragm assembly includes an inner fixing part, a folded ring part, and an outer fixing part connected sequentially from the inside to the outside. The outer fixing part is connected to an extension part that is fixed on the frame.

[0008] A conductive layer is disposed on the diaphragm assembly. The conductive layer includes an inner conductive part, a connecting part, and an outer conductive part connected in sequence. The inner conductive part is disposed in the inner fixing part, and the outer conductive part is disposed in the extension part and electrically connected to the connection area.

[0009] The voice coil is fixed on the inner fixed part and electrically connected to the inner conductive part.

[0010] In one embodiment, the extension includes a first extension arm and a second extension arm connected together. The first extension arm is fixed to the side of the basin stand and connected to an external fixing part. The top surface of the second extension arm is connected to the basin stand. An external conductive part is provided on the top surface of the second extension arm and electrically connected to the connection area.

[0011] In one embodiment, the first extension arm is perpendicular to both the external fixing portion and the second extension arm.

[0012] In one embodiment, the conductive layer is a conductive coating formed on the diaphragm assembly by a spraying process.

[0013] In one embodiment, the conductive coating is a nano-metal conductive coating.

[0014] In one embodiment, the conductive layer is a conductive ink layer formed on the diaphragm assembly by a screen printing process.

[0015] In one embodiment, the number of the extensions is one or more, and one or more of the conductive layers are provided on a single extension.

[0016] In one embodiment, the diaphragm assembly includes a diaphragm, and the extension and the diaphragm are integrally formed into a single structure.

[0017] In one embodiment, the diaphragm assembly includes a diaphragm, which is a multilayer composite diaphragm or a single-layer diaphragm.

[0018] In one embodiment, the diaphragm assembly includes a diaphragm, the diaphragm being made of at least one of PEEK, TPEE, TPU, and rubber.

[0019] The beneficial effects of this utility model are as follows: This sound-generating unit directly sets a conductive layer on the diaphragm assembly, connecting the connection area of ​​the voice coil and the electrical terminals on the frame, and connecting the exposed area of ​​the electrical terminals to the external power supply. This eliminates the need for lead wires or centering supports that occupy internal space in traditional structures, making the current path of the voice coil shorter and more stable. Thus, without increasing the volume of the sound-generating unit, it effectively releases internal space, increases the design margin of the magnetic circuit assembly and the vibration assembly, and achieves higher sensitivity, lower distortion and a wider frequency response range, meeting the urgent need of miniaturized electronic devices for high-performance sound-generating units. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is an exploded view of the sound-generating unit according to Embodiment 1 of this utility model;

[0022] Figure 2 This is a schematic diagram of the overall structure of the sound-generating unit in Embodiment 1 of this utility model;

[0023] Figure 3 This is a schematic diagram of a portion of the structure of the sound-generating unit in Embodiment 1 of this utility model;

[0024] Figure 4This is a top view of the sound-generating unit according to Embodiment 1 of this utility model;

[0025] Figure 5 For along Figure 4 Sectional view of line AA in the middle;

[0026] Figure 6 for Figure 5 Enlarged view of point B in the middle.

[0027] Explanation of icon numbers:

[0028] 1. Voice coil; 11. Body; 12. Lead wire;

[0029] 2. Sink stand;

[0030] 3. Diaphragm assembly; 31. Inner fixing part; 32. Folded ring part; 33. Outer fixing part; 34. Extension part; 341. First extension arm; 342. Second extension arm; 35. Side fixing part; 36. Diaphragm; 37. Dome;

[0031] 4. Magnetic circuit components; 41. Yoke; 42. Central magnetic structure; 43. Side magnetic structure;

[0032] 5. Conductive layer; 51. Inner conductive part; 52. Connecting part; 53. Outer conductive part;

[0033] 6. Electrical terminals; 61. Connection area; 62. Exposed area. Detailed Implementation

[0034] The purpose, features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] It should be noted that if the embodiments of this utility model involve directional indicators such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicators will also change accordingly.

[0037] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0038] Furthermore, if the word "and / or" appears throughout the text, it means that it includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or a solution that satisfies both A and B. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to 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 claimed by this utility model.

[0039] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0040] Example 1

[0041] Please refer to Figures 1 to 6The first embodiment of this utility model is as follows: a sound-generating unit, including a voice coil 1, a frame 2, and a diaphragm assembly 3 and a magnetic circuit assembly 4 respectively disposed on the frame 2. The frame 2 is provided with an electrical terminal 6, the exposed surface of which has a connection area 61 and an exposed area 62, the exposed area 62 being used for electrical connection with an external power source; the magnetic circuit assembly 4 includes a yoke 41 and a central magnetic structure 42 and a side magnetic structure 43 respectively disposed on the yoke 41. The central magnetic structure 42 is located between at least one set of two oppositely disposed side magnetic structures 43, and a magnetic gap is formed between the central magnetic structure 42 and the side magnetic structure 43 for the voice coil 1 to move. The central magnetic structure 42 includes a central magnet and a central washer located above the central magnet. The central magnet connects the central washer and the yoke 41. The side magnetic structure 43 includes a side magnet and a... The side washer is located above the side magnet, and the side magnet connects the side washer to the yoke 41. The side washer is connected to the frame 2. The diaphragm assembly 3 includes an inner fixing part 31, a folding ring part 32 and an outer fixing part 33 connected in sequence from the inside to the outside. The outer fixing part 33 is fixed to the top surface of the frame 2 and is connected to an extension part 34 fixed on the frame 2. The voice coil 1 is fixed on the inner fixing part 31 to form a vibrating assembly with the diaphragm assembly 3. The diaphragm assembly 3 is provided with a conductive layer 5, which includes an inner conductive part 51, a connecting part 52 and an outer conductive part 53 connected in sequence. The inner conductive part 51 and the connecting part 52 are both located on the side of the diaphragm assembly 3 closer to the frame 2. The inner conductive part 51 is located on the inner fixing part 31 and is electrically connected to the voice coil 1. The outer conductive part 53 is located on the extension part 34 and is electrically connected to the connecting area 61.

[0042] Specifically, the voice coil 1 includes a connected body 11 and a lead wire 12. The body 11 is fixed on the inner fixing part 31, and the lead wire 12 is fixed and electrically connected to the inner conductive part 51. Optionally, the lead wire 12 is fixed and connected to the inner conductive part 51 by conductive adhesive. The conductive adhesive can not only conduct the lead wire 12 and the inner conductive part 51, but also fix and protect the lead wire 12.

[0043] In some embodiments, the extension 34 includes a first extension arm 341 and a second extension arm 342 connected together. The first extension arm 341 is fixed to the side of the basin stand 2 and connected to the outer fixing part 33. The top surface of the second extension arm 342 is connected to the basin stand 2. An outer conductive part 53 is disposed on the top surface of the second extension arm 342 and electrically connected to the connection area 61. In this embodiment, the first extension arm 341 is perpendicular to both the outer fixing part 33 and the second extension arm 342.

[0044] The diaphragm assembly 3 further includes a side fixing part 35, and the outer fixing part 33 is connected to the first extension arm 341 through the side fixing part 35. The side fixing part 35 is fixed to the side of the frame 2. In one or more embodiments, the side fixing part 35 is arranged in a circle around the frame 2, which can effectively increase the bonding area between the diaphragm assembly 3 and the frame 2, and help ensure the structural stability of the sound-generating unit.

[0045] It is readily understood that the conductive layer 5 has a certain elastic deformation capability, allowing it to deform along with the folded ring portion 32. In some embodiments, the conductive layer 5 is a conductive coating formed on the diaphragm assembly 3 by a spraying process. The conductive coating may be a nano-metal conductive coating, such as a nano-silver conductive coating or a nano-copper conductive coating. In other embodiments, the conductive layer 5 is a conductive ink layer formed on the diaphragm assembly 3 by a screen printing process.

[0046] The extension portion 34 can be one or more, and each extension portion 34 has one or more conductive layers 5. When there is only one extension portion 34, the extension portion 34 has multiple conductive layers 5, one conductive layer 5 conducts to the negative terminal of the voice coil 1, and another conductive layer 5 conducts to the positive terminal of the voice coil 1. When there are multiple extension portions 34, two extension portions 34 each have a conductive layer 5, and the conductive layers 5 on different extension portions 34 respectively conduct to the positive and negative terminals of the voice coil 1.

[0047] The diaphragm assembly 3 includes a diaphragm 36, and preferably the extension 34 and the diaphragm 36 are integrally formed. In some embodiments, the diaphragm assembly 3 also includes a dome 37, which is fixed on the inner fixing part 31, and the body 11 of the voice coil 1 is fixed on the dome 37 or the diaphragm 36.

[0048] The diaphragm assembly 3 includes a diaphragm 36, and the conductive layer 5 is disposed on the diaphragm 36. The diaphragm 36 is a multilayer composite film or a single-layer film. The material used to make the diaphragm 36 includes at least one of PEEK (polyether ether ketone), TPEE (thermoplastic polyester elastomer), TPU (thermoplastic polyurethane elastomer), and rubber.

[0049] The above are merely optional embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the contents of this utility model specification and drawings under the utility model concept, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A sound-generating unit, characterized in that: include A basin stand, wherein the basin stand is provided with electrical terminals, and the exposed surface of the electrical terminals has a connection area and an exposed area; The diaphragm assembly includes an inner fixing part, a folded ring part, and an outer fixing part connected sequentially from the inside to the outside. The outer fixing part is connected to an extension part that is fixed on the frame. A conductive layer is disposed on the diaphragm assembly. The conductive layer includes an inner conductive part, a connecting part, and an outer conductive part connected in sequence. The inner conductive part is disposed in the inner fixing part, and the outer conductive part is disposed in the extension part and electrically connected to the connection area. The voice coil is fixed on the inner fixed part and electrically connected to the inner conductive part.

2. The sound-generating unit according to claim 1, characterized in that: The extension includes a first extension arm and a second extension arm connected together. The first extension arm is fixed to the side of the basin stand and connected to an external fixing part. The top surface of the second extension arm is connected to the basin stand. An external conductive part is provided on the top surface of the second extension arm and electrically connected to the connection area.

3. The sound-generating unit according to claim 2, characterized in that: The first extension arm is perpendicular to both the external fixing part and the second extension arm.

4. The sound-generating unit according to claim 1, characterized in that: The conductive layer is a conductive coating formed on the diaphragm assembly by a spraying process.

5. The sound-generating unit according to claim 4, characterized in that: The conductive coating is a nano-metal conductive coating.

6. The sound-generating unit according to claim 1, characterized in that: The conductive layer is a conductive ink layer formed on the diaphragm assembly by a screen printing process.

7. The sound-generating unit according to claim 1, characterized in that: The number of the extensions is one or more, and each extension is provided with one or more of the conductive layers.

8. The sound-generating unit according to claim 1, characterized in that: The diaphragm assembly includes a diaphragm, and the extension portion and the diaphragm are integrally formed.

9. The sound-generating unit according to claim 1, characterized in that: The diaphragm assembly includes a diaphragm, which is a multilayer composite diaphragm or a single-layer diaphragm.

10. The sound-generating unit according to claim 1, characterized in that: The diaphragm assembly includes a diaphragm, which is made of at least one of PEEK, TPEE, TPU, and rubber.

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