Sound production unit

Abstract

The utility model discloses a sounding unit, which comprises a skeleton, a diaphragm, a dome and a shaping support chip, the skeleton comprises a body and a reinforcing rib, the central area of the body is provided with a window, the two opposite sides of the window are respectively provided with a support arm bending downwards, the reinforcing rib is located in the window, and the two ends of the reinforcing rib are respectively connected with the body; the vibrating diaphragm comprises an inner fixing part, the inner fixing part is in an annular frame shape and is connected with the body, and the inner fixing part is arranged around the body; the dome is arranged on the body and covers the window; the shaping support sheet comprises an inner mounting part, a cantilever part and an outer mounting part which are connected in sequence, and the support arm is fixedly connected with the outer mounting part. The sound production unit is novel in structure, light and thin, and the segmentation vibration phenomenon at high frequency is improved.

Description

Technical Field

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

[0002] The sounding unit is mostly used in electronic devices such as mobile phones and earphones, and the scenarios where it is used are mostly for calls, playing music, playing videos, etc.

[0003] When the sounding unit works at high frequencies, it is easy to generate splitting vibration, which affects the high-frequency sound quality. To solve this problem, the prior art mostly increases the thickness of the dome to increase the rigidity of the vibration system. However, the increase in the thickness of the dome will lead to an increase in the weight of the vibration system, resulting in problems such as a decrease in the mid-frequency sensitivity of the sounding unit, making the sound of the sounding unit not clear and full enough, affecting the sounding effect of the sounding unit, and at the same time causing an increase in the overall height of the sounding unit. Summary of the Utility Model

[0004] The technical problem solved by the utility model is to provide a novel and thin sounding unit that can improve splitting vibration at high frequencies.

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

[0006] A skeleton, the skeleton includes a body and a reinforcing rib, a window is provided in the central region of the body, opposite sides of the window respectively have support arms bent downward, the reinforcing rib is located in the window, and both ends of the reinforcing rib are respectively connected to the body;

[0007] A diaphragm, the diaphragm includes an inner fixing portion, the inner fixing portion is in a ring frame shape and is connected to the body, and the inner fixing portion surrounds the body;

[0008] A dome, the dome is provided on the body and covers the window;

[0009] A shaped support piece, the shaped support piece includes an inner mounting portion, a cantilever portion and an outer mounting portion connected in sequence, and the support arm is fixedly connected to the outer mounting portion.

[0010] In one embodiment, the body, the reinforcing rib and the support arm are integrally formed as an integral structure.

[0011] In one embodiment, the outer edge of the body has a crimping edge, and the inner edge of the inner fixing portion is located within the crimping edge and is fixedly connected to the crimping edge.

[0012] In one embodiment, a pressing groove is provided in the central region of the body, the window is located at the bottom of the pressing groove, and at least part of the dome is received in the pressing groove.

[0013] In one embodiment, the top surface of the dome is lower than or flush with the top surface of the body.

[0014] In one embodiment, the number of the reinforcing ribs is multiple.

[0015] In one embodiment, at least two of the reinforcing ribs are connected by connecting ribs.

[0016] In one embodiment, reinforcing concave platforms are provided on the reinforcing ribs.

[0017] In one embodiment, the outer mounting portion includes a first plate portion, a raised portion, and a second plate portion that are connected in sequence. The first plate portion and the second plate portion are respectively perpendicular to the raised portion. The first plate portion and the second plate portion are located on opposite sides of the raised portion. The first plate portion is fixed to the body. The support arm is fixedly connected to the second plate portion. The second plate portion is connected to the cantilever portion. A first pad is provided on the first plate portion. A second pad electrically connected to the first pad is provided on the inner mounting portion.

[0018] In one embodiment, stamping ribs are provided on the support arm.

[0019] The beneficial effects of the present utility model are as follows: The structure of the present sounding unit is novel. Reinforcing ribs are provided at the window of the skeleton, enhancing the rigidity of the vibration system of the sounding unit. Without changing the overall height of the sounding unit, the phenomenon that the sounding unit is prone to generate splitting vibration at high frequencies is effectively improved. While ensuring the thinning of the sounding unit, the high-frequency performance of the sounding unit is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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 use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0021] Figure 1 is an exploded view of the sounding unit according to Embodiment 1 of the present utility model;

[0022] Figure 2 is a cross-sectional view of the sounding unit according to Embodiment 1 of the present utility model;

[0023] Figure 3 is a schematic structural view of the sounding unit according to Embodiment 1 of the present utility model with the dome hidden;

[0024] Figure 4 is a schematic structural view of the sounding unit according to Embodiment 2 of the present utility model with the dome hidden;

[0025] Figure 5 This is a schematic structural diagram after the sound dome of the third embodiment of the present utility model is hidden.

[0026] Explanation of the reference numerals in the attached drawings:

[0027] 1. Basin frame;

[0028] 2. Magnetic circuit assembly; 21. Yoke; 22. Boss; 23. Central magnetic structure; 24. Edge magnetic structure;

[0029] 3. Skeleton; 31. Body; 311. Pressing edge; 32. Reinforcing rib; 321. Reinforcing concave platform; 33. Support arm; 331. Stamping rib; 35. Connecting rib;

[0030] 4. Voice coil;

[0031] 5. Diaphragm; 51. Inner fixing part; 52. Folded ring part; 53. Outer fixing part;

[0032] 6. Sound dome;

[0033] 7. Shaping support piece; 71. Inner installation part; 72. Cantilever part; 73. Outer installation part; 731. First plate part; 732. Lifting part; 733. Second plate part;

[0034] 8. Conductive part. Specific implementation manners

[0035] The realization of the purpose, functional features and advantages of the present utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings.

[0036] 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 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.

[0037] 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, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indications will also change accordingly.

[0038] In addition, if the descriptions such as "first" and "second" are involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature.

[0039] In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "and / or" as an example, it includes the solution, or the solution, or the solution that satisfies both 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.

[0040] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. shall 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 internal communication of 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.

[0041] Embodiment 1

[0042] Please refer to Figures 1 to 3 , Embodiment 1 of the present utility model is: a sound generating unit, including a chassis 1, a magnetic circuit assembly 2, a skeleton 3, a voice coil 4, a diaphragm 5, a dome 6 and a shaping support piece 7. The magnetic circuit assembly 2 includes a yoke 21 and a boss 22, a central magnetic structure 23 and a side magnetic structure 24 respectively arranged on the yoke 21. The side magnetic structure 24 is connected to the chassis 1. A magnetic gap is formed between the central magnetic structure 23 and the side magnetic structure 24. The central magnetic structure 23 is integrally in a ring frame shape. The boss 22 is located in the hollow area of the central magnetic structure 23. A conductive member 8 is arranged on the boss 22. One end of the conductive member 8 is exposed on the bottom surface of the yoke 21 to be electrically connected to an external power source; the boss 22 and the yoke 21 can either be an integral structure formed by integral processing or a split structure fixed by gluing, hot melting or other means;

[0043] The framework 3 includes a body 31 and reinforcing ribs 32. A window is provided in the central region of the body 31. Opposite sides of the window respectively have support arms 33 that are bent downward. The reinforcing ribs 32 are located within the window, and both ends of the reinforcing ribs 32 are respectively connected to the body 31. The voice coil 4 is connected to the body 31 and is arranged corresponding to the magnetic gap. The dome 6 is arranged on the body 31 and covers the window to seal the window.

[0044] The diaphragm 5 includes an inner fixing portion 51, a surround portion 52, and an outer fixing portion 53 that are connected in sequence from the inside out. The inner fixing portion 51 is in the shape of a ring frame and is connected to the body 31. The inner fixing portion 51 surrounds the body 31 to achieve a sealed connection with the body 31. The outer fixing portion 53 is connected to the chassis 1.

[0045] The shaping support piece 7 includes an inner mounting portion 71, a cantilever portion 72, and an outer mounting portion 73 that are connected in sequence. The inner mounting portion 71 is fixed on the boss 22. The support arm 33 is fixedly connected to the outer mounting portion 73. The voice coil 4 is electrically connected to the conductive member 8 through the shaping support piece 7.

[0046] Specifically, the outer mounting portion 73 includes a first plate portion 731, a raised portion 732, and a second plate portion 733 that are connected in sequence. The first plate portion 731 and the second plate portion 733 are respectively perpendicular to the raised portion 732. The first plate portion 731 and the second plate portion 733 are located on opposite sides of the raised portion 732. The first plate portion 731 is fixed on the body 31. The support arm 33 is fixedly connected to the second plate portion 733. The second plate portion 733 is connected to the cantilever portion 72. A first solder pad for welding the lead of the voice coil 4 is provided on the first plate portion 731. A second solder pad that is electrically conductive with the first solder pad is provided on the inner mounting portion 71. The second solder pad is electrically connected to the conductive member 8.

[0047] For convenient processing and manufacturing, the body 31, the reinforcing ribs 32, and the support arms 33 are integrally formed as an integral structure. The framework 3 is made of a material with low density, such as aluminum, aluminum-magnesium alloy, magnesium-aluminum alloy, etc. This can minimize the increase in the weight of the vibration system and reduce the impact on the performance sensitivity of the sound generating unit.

[0048] To improve the rigidity of the support arm 33 and enable the support arm 33 to play a better supporting role, optionally, the support arm 33 is provided with stamping ribs 331.

[0049] As a preferred embodiment, in this embodiment, the top surface of the reinforcing rib 32 is flush with the top surface of the edge of the window, and the bottom surface of the reinforcing rib 32 is flush with the bottom surface of the edge of the window.

[0050] To make the overall height of the sound - generating unit lower, the outer edge of the body 31 has a crimping edge 311, and the inner edge of the inner fixing part 51 is located within the crimping edge 311 and is fixedly connected to the crimping edge 311. Optionally, the inner edge of the inner fixing part 51 is adhesively connected to the body 31. Additionally, the setting of the crimping edge 311 can enhance the rigidity of the skeleton 3 itself, thereby improving the rigidity of the vibration system of the sound - generating unit.

[0051] A pressing groove is provided in the central region of the body 31, and the window is located at the bottom of the pressing groove. The setting of the pressing groove can also improve the rigidity of the skeleton 3 itself.

[0052] At least a part of the dome 6 is received in the pressing groove. With the assistance of the pressing groove, the dome 6 can be easily positioned and installed. To make the overall sound - generating unit thinner and lighter, it is preferred that the top surface of the dome 6 is lower than or flush with the top surface of the body 31. In actual products, it is also acceptable that the top surface of the dome 6 is higher than the top surface of the body 31.

[0053] In the sound - generating unit, the reinforcing rib 32 corresponds to the hollow region of the central magnetic structure 23. When looking down at the sound - generating unit, the pressing groove is located within the hollow region of the central magnetic structure 23. Therefore, during the operation of the sound - generating unit, the reinforcing rib 32 will not collide with other components and will not increase the overall thickness of the sound - generating unit.

[0054] The number of the reinforcing ribs 32 is one or more. In this embodiment, the number of the reinforcing ribs 32 is two, and the two reinforcing ribs 32 are arranged side by side. In other embodiments, the two reinforcing ribs 32 can also be cross - arranged, and at this time, the two reinforcing ribs 32 form an X - shaped structure.

[0055] Embodiment Two

[0056] Please refer to Figure 4 Embodiment Two of the present utility model is a further improvement made on the basis of Embodiment One. The difference from Embodiment One is that at least two reinforcing ribs 32 are connected by a connecting rib 35.

[0057] In this embodiment, the connecting rib 35 and the two reinforcing ribs 32 form an H - shaped structure. It is preferred that the connecting rib 35 is a part of the region of the skeleton 3, that is to say, the reinforcing rib 32 and the connecting rib 35 are an integrally - formed integral structure.

[0058] Embodiment Three

[0059] Please refer to Figure 5, Embodiment 3 of the present utility model is a further improvement made on the basis of Embodiment 1. The difference from Embodiment 1 lies in that: there is a reinforcing concave platform 321 on the reinforcing rib 32. The reinforcing concave platform 321 can be a stamping structure formed by stamping. The presence of the reinforcing concave platform 321 can improve the structural strength of the reinforcing rib 32, further improving the rigidity of the framework 3, thereby more greatly improving the splitting vibration of the sounding unit vibration system at high frequencies.

[0060] 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: Comprising A skeleton, the skeleton including a body and reinforcing ribs, a window being provided in a central region of the body, opposite sides of the window each having a support arm bent downward, the reinforcing ribs being located within the window, and two ends of the reinforcing ribs respectively connecting to the body; A diaphragm, the diaphragm including an inner fixing portion, the inner fixing portion being in an annular frame shape and connecting to the body, the inner fixing portion surrounding the body; A dome, the dome being provided on the body and covering the window; A shaping support piece, the shaping support piece including an inner mounting portion, a cantilever portion, and an outer mounting portion connected in sequence, the support arm being fixedly connected to the outer mounting portion.

2. The sound generating unit according to claim 1, wherein: The body, the reinforcing ribs, and the support arm are of an integrally formed one-piece structure.

3. The sound generating unit according to claim 1, wherein: An edge pressing is provided on an outer edge of the body, and an inner edge of the inner fixing portion is located within the edge pressing and fixedly connected to the edge pressing.

4. The sound generating unit according to claim 1, wherein: A pressing groove is provided in the central region of the body, the window being located at a bottom of the pressing groove, and at least a partial region of the dome being received in the pressing groove.

5. The sound generating unit according to claim 4, wherein: A top surface of the dome is lower than or flush with a top surface of the body.

6. The sound generating unit according to claim 1, wherein: The number of the reinforcing ribs is multiple.

7. The sound generating unit according to claim 6, characterized in that: At least two of the reinforcing ribs are connected by connecting ribs.

8. The sound generating unit according to claim 1, characterized in that: Reinforcing concave platforms are provided on the reinforcing ribs.

9. The sound generating unit according to claim 1, wherein: The outer mounting portion includes a first plate portion, a raised portion, and a second plate portion connected in sequence, the first plate portion and the second plate portion being perpendicular to the raised portion respectively, the first plate portion and the second plate portion being on opposite sides of the raised portion, the first plate portion being fixed on the body, the support arm being fixedly connected to the second plate portion, the second plate portion connecting to the cantilever portion, a first solder pad being provided on the first plate portion, and a second solder pad electrically conductive with the first solder pad being provided on the inner mounting portion.

10. The sound generating unit according to claim 1, wherein: Stamping ribs are provided on the support arm.

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