sound production unit

Abstract

The utility model discloses a sound unit, including basin frame, diaphragm subassembly, conducting layer and voice coil, 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 first extension arm, and first extension arm is connected with second extension arm, and the outside fixed part is fixed in the top surface of basin frame, and first extension arm is fixed in the side of basin frame, and the top surface of second extension arm is connected basin frame, conducting layer is located on diaphragm subassembly, and conducting layer includes the inside lead -through part, the communicating part and the outside lead -through part that are connected in proper order, and the communicating part includes the transition part that is located on the top surface of second extension arm, and the outside lead -through part is located on the bottom surface of second extension arm, and the transition part and the outside lead -through part are electrically connected through lead -through structure, and the voice coil is fixed on the inside fixed part and is electrically connected with the inside lead -through part.

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] Sink stand;

[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 a first extension arm, and the first extension arm is connected to a second extension arm. The outer fixing part is fixed to the top surface of the basin frame, the first extension arm is fixed to the side surface of the basin frame, and the top surface of the second extension arm is connected to the basin 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 connecting part includes a transition part disposed on the top surface of the second extension arm, and the outer conductive part is disposed on the bottom surface of the second extension arm. The transition part and the outer conductive part are electrically connected through a conductive structure.

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

[0010] In one embodiment, the voice coil includes a connected body and a lead wire, the body being fixed to the inner fixing part, and the lead wire being fixedly connected to the inner conductive part by conductive adhesive.

[0011] In one embodiment, the conductive layer is a conductive coating formed on the diaphragm assembly by a spraying process.

[0012] In one embodiment, the conductive coating is a nano-metal conductive coating.

[0013] In one embodiment, the conductive layer is a conductive ink layer formed on the diaphragm assembly by a screen printing process.

[0014] In one embodiment, the diaphragm assembly includes a diaphragm, which is a multilayer composite diaphragm or a single-layer diaphragm.

[0015] In one embodiment, the diaphragm assembly includes a diaphragm, the diaphragm being made of at least one of PEEK, TPEE, TPU, and rubber.

[0016] In one embodiment, the conductive structure is a metallized via.

[0017] In one embodiment, the conductive structure includes a through hole provided on the second extension arm and a conductive filler filling the through hole.

[0018] In one embodiment, the conductive structure is disposed on the end face of the second extension arm.

[0019] The beneficial effects of this utility model are as follows: This sound-generating unit directly integrates the conductive layer into the extension arm of the diaphragm assembly. The first and second extension arms of the diaphragm assembly itself form a three-dimensional conductive path from the top surface of the frame, through the side, and back to the bottom surface. The transition part and the outer conductive part are reliably electrically connected between the top and bottom surfaces of the second extension arm through a conductive structure. This extends the inner conductive part of the voice coil to the outer conductive part at the bottom of the frame through the diaphragm, eliminating the need for traditional lead wires or centering supports and other additional conductive components. The conductive layer and the diaphragm assembly share space and do not occupy additional magnetic circuit and vibration space, allowing the magnetic circuit assembly to be made larger and the stroke of the diaphragm assembly to be increased. Under the premise of structural and size constraints, it simultaneously improves sensitivity, reduces distortion, and widens the frequency response, achieving high-performance output. 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 top view of the sound-generating unit according to Embodiment 1 of this utility model;

[0024] Figure 4 For along Figure 3 Sectional view of line AA in the middle;

[0025] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0026] Figure 6 This is a schematic diagram of a portion of the structure of the sound-generating unit in Embodiment 1 of this utility model;

[0027] Figure 7 This is a cross-sectional view of the sound-generating unit according to Embodiment 2 of this utility model;

[0028] Figure 8 for Figure 7 Enlarged view of point C in the middle;

[0029] Figure 9 This is a cross-sectional view of the sound-generating unit according to Embodiment 2 of this utility model;

[0030] Figure 10 for Figure 9 Enlarged view of point D in the middle.

[0031] Explanation of icon numbers:

[0032] 1. Voice coil; 11. Body; 12. Lead wire;

[0033] 2. Sink stand;

[0034] 3. Diaphragm assembly; 31. Inner fixing part; 32. Folded ring part; 33. Outer fixing part; 34. First extension arm; 35. Second extension arm; 36. Side fixing part; 37. Diaphragm; 38. Dome;

[0035] 4. Magnetic circuit components; 41. Yoke; 42. Central magnetic structure; 43. Side magnetic structure;

[0036] 5. Conductive layer; 51. Inner conductive part; 52. Connecting part; 521. Transition part; 53. Outer conductive part; 54. Conductive structure. Detailed Implementation

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] Example 1

[0044] 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 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. A magnetic gap is formed between the central magnetic structure 42 and the side magnetic structures 43 for the voice coil 1 to move. The central magnetic structure 42 includes a central magnet and a magnetic gap located on the central magnet. The central washer is located at the top, and the central magnet connects the central washer to the yoke 41. The side magnetic structure 43 includes a side magnet and a side washer located above the side magnet. The side magnet connects the side washer to the yoke 41, and the side washer is connected to the frame 2. The diaphragm assembly 3 includes an inner fixing part 31, a folded ring part 32, and an outer fixing part 33 connected sequentially from the inside to the outside. The outer fixing part 33 is connected to a first extension arm 34, and the first extension arm 34 is connected to a second extension arm 35. The outer fixing part 33 is fixed to the top surface of the frame 2. The extension arm 34 is fixed to the side of the basin frame 2, and the top surface of the second extension arm 35 is connected to the basin frame 2. 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 near the basin frame 2. The connecting part 52 includes a transition part 521 provided on the top surface of the second extension arm 35, and the outer conductive part 53 is provided on the bottom surface of the second extension arm 35. The transition part 521 and the outer conductive part 53 are electrically connected through a conductive structure 54. The external conductive part 53 is used for electrical connection with an external power source; the voice coil 1 is fixed on the inner fixed part 31 and electrically connected to the inner conductive part 51. Specifically, the voice coil 1 includes a connected body 11 and a lead wire 12. The body 11 is fixed on the inner fixed 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 to the inner conductive part 51, but also fix and protect the lead wire 12.

[0045] The diaphragm assembly 3 further includes a side fixing part 36, through which the outer fixing part 33 is connected to the first extension arm 34. The side fixing part 36 is fixed to the side of the frame 2. In one or more embodiments, the side fixing part 36 is arranged in a ring around the frame 2, which can effectively increase the bonding area between the diaphragm assembly 3 and the frame 2, thus helping to ensure the structural stability of the sound-generating unit.

[0046] 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.

[0047] The diaphragm assembly 3 includes a diaphragm 37, and the conductive layer 5 is disposed on the diaphragm 37. The diaphragm 37 is a multilayer composite film or a single-layer film, and the material used to make the diaphragm 37 includes at least one of PEEK (polyetheretherketone), TPEE (thermoplastic polyester elastomer), TPU (thermoplastic polyurethane elastomer), and rubber. The diaphragm 37, the side fixing part 36, the first extension arm 34, and the second extension arm 35 are integrally formed into a single structure. In some embodiments, the diaphragm assembly 3 further includes a dome 38, which is connected to the diaphragm 37, and the body 11 of the voice coil 1 is fixed to the dome 38 or the diaphragm 37.

[0048] In this embodiment, the conductive structure 54 is a metallized hole.

[0049] Example 2

[0050] Please refer to Figure 7 and Figure 8 The second embodiment of this utility model is a parallel technical solution to the first embodiment. The difference between the two embodiments is that the conductive structure 54 includes a through hole provided on the second extension arm 35 and a conductive filler filling the through hole. The conductive filler can be a solid formed by the solidification of conductive slurry or a metal structural component, etc.

[0051] Example 3

[0052] Please refer to Figure 9 and Figure 10 The third embodiment of this utility model is a parallel technical solution to the first embodiment. The difference between the third and the first embodiment is that the conductive structure 54 is provided on the end face of the second extension arm 35. That is to say, in this embodiment, the conductive structure 54 is a part of the conductive layer 5 and is formed synchronously during the forming process of the conductive layer 5.

[0053] 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 Sink stand; 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 a first extension arm, and the first extension arm is connected to a second extension arm. The outer fixing part is fixed to the top surface of the basin frame, the first extension arm is fixed to the side surface of the basin frame, and the top surface of the second extension arm is connected to the basin 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 connecting part includes a transition part disposed on the top surface of the second extension arm, and the outer conductive part is disposed on the bottom surface of the second extension arm. The transition part and the outer conductive part are electrically connected through a conductive structure. 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 voice coil includes a connected body and a lead wire. The body is fixed on the inner fixing part, and the lead wire is fixed and connected to the inner conductive part by conductive adhesive.

3. 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.

4. The sound-generating unit according to claim 3, characterized in that: The conductive coating is a nano-metal conductive coating.

5. 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.

6. 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.

7. 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.

8. The sound-generating unit according to claim 1, characterized in that: The conductive structure is a metallized via.

9. The sound-generating unit according to claim 1, characterized in that: The conductive structure includes a through hole on the second extension arm and a conductive filler filling the through hole.

10. The sound-generating unit according to claim 1, characterized in that: The conductive structure is located on the end face of the second extension arm.

Images